| Index: pdf/pdfium/pdfium_engine.cc
|
| ===================================================================
|
| --- pdf/pdfium/pdfium_engine.cc (revision 0)
|
| +++ pdf/pdfium/pdfium_engine.cc (revision 0)
|
| @@ -0,0 +1,3389 @@
|
| +// Copyright (c) 2012 The Chromium Authors. All rights reserved.
|
| +// Use of this source code is governed by a BSD-style license that can be
|
| +// found in the LICENSE file.
|
| +
|
| +#include "pdf/pdfium/pdfium_engine.h"
|
| +
|
| +#include <math.h>
|
| +
|
| +#include "base/json/json_writer.h"
|
| +#include "base/logging.h"
|
| +#include "base/memory/scoped_ptr.h"
|
| +#include "base/stl_util.h"
|
| +#include "base/strings/string_number_conversions.h"
|
| +#include "base/strings/string_piece.h"
|
| +#include "base/strings/string_util.h"
|
| +#include "base/strings/utf_string_conversions.h"
|
| +#include "base/values.h"
|
| +#include "pdf/draw_utils.h"
|
| +#include "pdf/pdfium/pdfium_mem_buffer_file_read.h"
|
| +#include "pdf/pdfium/pdfium_mem_buffer_file_write.h"
|
| +#include "ppapi/c/pp_errors.h"
|
| +#include "ppapi/c/pp_input_event.h"
|
| +#include "ppapi/c/ppb_core.h"
|
| +#include "ppapi/c/private/ppb_pdf.h"
|
| +#include "ppapi/cpp/dev/memory_dev.h"
|
| +#include "ppapi/cpp/input_event.h"
|
| +#include "ppapi/cpp/instance.h"
|
| +#include "ppapi/cpp/module.h"
|
| +#include "ppapi/cpp/private/pdf.h"
|
| +#include "ppapi/cpp/trusted/browser_font_trusted.h"
|
| +#include "ppapi/cpp/url_response_info.h"
|
| +#include "ppapi/cpp/var.h"
|
| +#include "third_party/pdfium/fpdfsdk/include/fpdf_ext.h"
|
| +#include "third_party/pdfium/fpdfsdk/include/fpdf_flatten.h"
|
| +#include "third_party/pdfium/fpdfsdk/include/fpdf_searchex.h"
|
| +#include "third_party/pdfium/fpdfsdk/include/fpdf_sysfontinfo.h"
|
| +#include "third_party/pdfium/fpdfsdk/include/fpdf_transformpage.h"
|
| +#include "third_party/pdfium/fpdfsdk/include/fpdfedit.h"
|
| +#include "third_party/pdfium/fpdfsdk/include/fpdfoom.h"
|
| +#include "third_party/pdfium/fpdfsdk/include/fpdfppo.h"
|
| +#include "third_party/pdfium/fpdfsdk/include/fpdfsave.h"
|
| +#include "third_party/pdfium/fpdfsdk/include/pdfwindow/PDFWindow.h"
|
| +#include "third_party/pdfium/fpdfsdk/include/pdfwindow/PWL_FontMap.h"
|
| +#include "ui/events/keycodes/keyboard_codes.h"
|
| +
|
| +namespace chrome_pdf {
|
| +
|
| +#define kPageShadowTop 3
|
| +#define kPageShadowBottom 7
|
| +#define kPageShadowLeft 5
|
| +#define kPageShadowRight 5
|
| +
|
| +#define kPageSeparatorThickness 4
|
| +#define kHighlightColorR 153
|
| +#define kHighlightColorG 193
|
| +#define kHighlightColorB 218
|
| +
|
| +#define kPendingPageColorR 238
|
| +#define kPendingPageColorG 238
|
| +#define kPendingPageColorB 238
|
| +#define kPendingPageColorA 255
|
| +
|
| +#define kFormHighlightColor 0xFFE4DD
|
| +#define kFormHighlightAlpha 100
|
| +
|
| +#define kMaxPasswordTries 3
|
| +
|
| +// See Table 3.20 in
|
| +// http://www.adobe.com/devnet/acrobat/pdfs/pdf_reference_1-7.pdf
|
| +#define kPDFPermissionPrintLowQualityMask 1 << 2
|
| +#define kPDFPermissionPrintHighQualityMask 1 << 11
|
| +#define kPDFPermissionCopyMask 1 << 4
|
| +#define kPDFPermissionCopyAccessibleMask 1 << 9
|
| +
|
| +#define kLoadingTextVerticalOffset 50
|
| +
|
| +// The maximum amount of time we'll spend doing a paint before we give back
|
| +// control of the thread.
|
| +#define kMaxProgressivePaintTimeMs 50
|
| +
|
| +// The maximum amount of time we'll spend doing the first paint. This is less
|
| +// than the above to keep things smooth if the user is scrolling quickly. We
|
| +// try painting a little because with accelerated compositing, we get flushes
|
| +// only every 16 ms. If we were to wait until the next flush to paint the rest
|
| +// of the pdf, we would never get to draw the pdf and would only draw the
|
| +// scrollbars. This value is picked to give enough time for gpu related code to
|
| +// do its thing and still fit within the timelimit for 60Hz. For the
|
| +// non-composited case, this doesn't make things worse since we're still
|
| +// painting the scrollbars > 60 Hz.
|
| +#define kMaxInitialProgressivePaintTimeMs 10
|
| +
|
| +// Copied from printing/units.cc because we don't want to depend on printing
|
| +// since it brings in libpng which causes duplicate symbols with PDFium.
|
| +const int kPointsPerInch = 72;
|
| +const int kPixelsPerInch = 96;
|
| +
|
| +struct ClipBox {
|
| + float left;
|
| + float right;
|
| + float top;
|
| + float bottom;
|
| +};
|
| +
|
| +int ConvertUnit(int value, int old_unit, int new_unit) {
|
| + // With integer arithmetic, to divide a value with correct rounding, you need
|
| + // to add half of the divisor value to the dividend value. You need to do the
|
| + // reverse with negative number.
|
| + if (value >= 0) {
|
| + return ((value * new_unit) + (old_unit / 2)) / old_unit;
|
| + } else {
|
| + return ((value * new_unit) - (old_unit / 2)) / old_unit;
|
| + }
|
| +}
|
| +
|
| +std::vector<uint32_t> GetPageNumbersFromPrintPageNumberRange(
|
| + const PP_PrintPageNumberRange_Dev* page_ranges,
|
| + uint32_t page_range_count) {
|
| + std::vector<uint32_t> page_numbers;
|
| + for (uint32_t index = 0; index < page_range_count; ++index) {
|
| + for (uint32_t page_number = page_ranges[index].first_page_number;
|
| + page_number <= page_ranges[index].last_page_number; ++page_number) {
|
| + page_numbers.push_back(page_number);
|
| + }
|
| + }
|
| + return page_numbers;
|
| +}
|
| +
|
| +#if defined(OS_LINUX)
|
| +
|
| +PP_Instance g_last_instance_id;
|
| +
|
| +struct PDFFontSubstitution {
|
| + const char* pdf_name;
|
| + const char* face;
|
| + bool bold;
|
| + bool italic;
|
| +};
|
| +
|
| +// This list is for CPWL_FontMap::GetDefaultFontByCharset().
|
| +// We pretend to have these font natively and let the browser (or underlying
|
| +// fontconfig) to pick the proper font on the system.
|
| +void EnumFonts(struct _FPDF_SYSFONTINFO* sysfontinfo, void* mapper) {
|
| + FPDF_AddInstalledFont(mapper, "Arial", FXFONT_DEFAULT_CHARSET);
|
| +
|
| + int i = 0;
|
| + while (CPWL_FontMap::defaultTTFMap[i].charset != -1) {
|
| + FPDF_AddInstalledFont(mapper,
|
| + CPWL_FontMap::defaultTTFMap[i].fontname,
|
| + CPWL_FontMap::defaultTTFMap[i].charset);
|
| + ++i;
|
| + }
|
| +}
|
| +
|
| +const PDFFontSubstitution PDFFontSubstitutions[] = {
|
| + {"Courier", "Courier New", false, false},
|
| + {"Courier-Bold", "Courier New", true, false},
|
| + {"Courier-BoldOblique", "Courier New", true, true},
|
| + {"Courier-Oblique", "Courier New", false, true},
|
| + {"Helvetica", "Arial", false, false},
|
| + {"Helvetica-Bold", "Arial", true, false},
|
| + {"Helvetica-BoldOblique", "Arial", true, true},
|
| + {"Helvetica-Oblique", "Arial", false, true},
|
| + {"Times-Roman", "Times New Roman", false, false},
|
| + {"Times-Bold", "Times New Roman", true, false},
|
| + {"Times-BoldItalic", "Times New Roman", true, true},
|
| + {"Times-Italic", "Times New Roman", false, true},
|
| +
|
| + // MS P?(Mincho|Gothic) are the most notable fonts in Japanese PDF files
|
| + // without embedding the glyphs. Sometimes the font names are encoded
|
| + // in Japanese Windows's locale (CP932/Shift_JIS) without space.
|
| + // Most Linux systems don't have the exact font, but for outsourcing
|
| + // fontconfig to find substitutable font in the system, we pass ASCII
|
| + // font names to it.
|
| + {"MS-PGothic", "MS PGothic", false, false},
|
| + {"MS-Gothic", "MS Gothic", false, false},
|
| + {"MS-PMincho", "MS PMincho", false, false},
|
| + {"MS-Mincho", "MS Mincho", false, false},
|
| + // MS PGothic in Shift_JIS encoding.
|
| + {"\x82\x6C\x82\x72\x82\x6F\x83\x53\x83\x56\x83\x62\x83\x4E",
|
| + "MS PGothic", false, false},
|
| + // MS Gothic in Shift_JIS encoding.
|
| + {"\x82\x6C\x82\x72\x83\x53\x83\x56\x83\x62\x83\x4E",
|
| + "MS Gothic", false, false},
|
| + // MS PMincho in Shift_JIS encoding.
|
| + {"\x82\x6C\x82\x72\x82\x6F\x96\xBE\x92\xA9",
|
| + "MS PMincho", false, false},
|
| + // MS Mincho in Shift_JIS encoding.
|
| + {"\x82\x6C\x82\x72\x96\xBE\x92\xA9",
|
| + "MS Mincho", false, false},
|
| +};
|
| +
|
| +void* MapFont(struct _FPDF_SYSFONTINFO*, int weight, int italic,
|
| + int charset, int pitch_family, const char* face, int* exact) {
|
| + pp::BrowserFontDescription description;
|
| +
|
| + // Pretend the system does not have the Symbol font to force a fallback to
|
| + // the built in Symbol font in CFX_FontMapper::FindSubstFont().
|
| + if (strcmp(face, "Symbol") == 0)
|
| + return NULL;
|
| +
|
| + if (pitch_family & FXFONT_FF_FIXEDPITCH) {
|
| + description.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_MONOSPACE);
|
| + } else if (pitch_family & FXFONT_FF_ROMAN) {
|
| + description.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_SERIF);
|
| + }
|
| +
|
| + // Map from the standard PDF fonts to TrueType font names.
|
| + size_t i;
|
| + for (i = 0; i < arraysize(PDFFontSubstitutions); ++i) {
|
| + if (strcmp(face, PDFFontSubstitutions[i].pdf_name) == 0) {
|
| + description.set_face(PDFFontSubstitutions[i].face);
|
| + if (PDFFontSubstitutions[i].bold)
|
| + description.set_weight(PP_BROWSERFONT_TRUSTED_WEIGHT_BOLD);
|
| + if (PDFFontSubstitutions[i].italic)
|
| + description.set_italic(true);
|
| + break;
|
| + }
|
| + }
|
| +
|
| + if (i == arraysize(PDFFontSubstitutions)) {
|
| + // TODO(kochi): Pass the face in UTF-8. If face is not encoded in UTF-8,
|
| + // convert to UTF-8 before passing.
|
| + description.set_face(face);
|
| + }
|
| +
|
| + if (!pp::PDF::IsAvailable()) {
|
| + NOTREACHED();
|
| + return NULL;
|
| + }
|
| +
|
| + PP_Resource font_resource = pp::PDF::GetFontFileWithFallback(
|
| + pp::InstanceHandle(g_last_instance_id),
|
| + &description.pp_font_description(),
|
| + static_cast<PP_PrivateFontCharset>(charset));
|
| + long res_id = font_resource;
|
| + return reinterpret_cast<void*>(res_id);
|
| +}
|
| +
|
| +unsigned long GetFontData(struct _FPDF_SYSFONTINFO*, void* font_id,
|
| + unsigned int table, unsigned char* buffer,
|
| + unsigned long buf_size) {
|
| + if (!pp::PDF::IsAvailable()) {
|
| + NOTREACHED();
|
| + return 0;
|
| + }
|
| +
|
| + uint32_t size = buf_size;
|
| + long res_id = reinterpret_cast<long>(font_id);
|
| + if (!pp::PDF::GetFontTableForPrivateFontFile(res_id, table, buffer, &size))
|
| + return 0;
|
| + return size;
|
| +}
|
| +
|
| +void DeleteFont(struct _FPDF_SYSFONTINFO*, void* font_id) {
|
| + long res_id = reinterpret_cast<long>(font_id);
|
| + pp::Module::Get()->core()->ReleaseResource(res_id);
|
| +}
|
| +
|
| +FPDF_SYSFONTINFO g_font_info = {
|
| + 1,
|
| + 0,
|
| + EnumFonts,
|
| + MapFont,
|
| + 0,
|
| + GetFontData,
|
| + 0,
|
| + 0,
|
| + DeleteFont
|
| +};
|
| +#endif // defined(OS_LINUX)
|
| +
|
| +void OOM_Handler(_OOM_INFO*) {
|
| + // Kill the process. This is important for security, since the code doesn't
|
| + // NULL-check many memory allocations. If a malloc fails, returns NULL, and
|
| + // the buffer is then used, it provides a handy mapping of memory starting at
|
| + // address 0 for an attacker to utilize.
|
| + abort();
|
| + // Paranoia, just in case.
|
| + *(volatile char*)0 = '\0';
|
| +}
|
| +
|
| +OOM_INFO g_oom_info = {
|
| + 1,
|
| + OOM_Handler
|
| +};
|
| +
|
| +PDFiumEngine* g_engine_for_unsupported;
|
| +
|
| +void Unsupported_Handler(UNSUPPORT_INFO*, int type) {
|
| + if (!g_engine_for_unsupported) {
|
| + NOTREACHED();
|
| + return;
|
| + }
|
| +
|
| + g_engine_for_unsupported->UnsupportedFeature(type);
|
| +}
|
| +
|
| +UNSUPPORT_INFO g_unsuppored_info = {
|
| + 1,
|
| + Unsupported_Handler
|
| +};
|
| +
|
| +// Set the destination page size and content area in points based on source
|
| +// page rotation and orientation.
|
| +//
|
| +// |rotated| True if source page is rotated 90 degree or 270 degree.
|
| +// |is_src_page_landscape| is true if the source page orientation is landscape.
|
| +// |page_size| has the actual destination page size in points.
|
| +// |content_rect| has the actual destination page printable area values in
|
| +// points.
|
| +void SetPageSizeAndContentRect(bool rotated,
|
| + bool is_src_page_landscape,
|
| + pp::Size* page_size,
|
| + pp::Rect* content_rect) {
|
| + bool is_dst_page_landscape = page_size->width() > page_size->height();
|
| + bool page_orientation_mismatched = is_src_page_landscape !=
|
| + is_dst_page_landscape;
|
| + bool rotate_dst_page = rotated ^ page_orientation_mismatched;
|
| + if (rotate_dst_page) {
|
| + page_size->SetSize(page_size->height(), page_size->width());
|
| + content_rect->SetRect(content_rect->y(), content_rect->x(),
|
| + content_rect->height(), content_rect->width());
|
| + }
|
| +}
|
| +
|
| +// Calculate the scale factor between |content_rect| and a page of size
|
| +// |src_width| x |src_height|.
|
| +//
|
| +// |scale_to_fit| is true, if we need to calculate the scale factor.
|
| +// |content_rect| specifies the printable area of the destination page, with
|
| +// origin at left-bottom. Values are in points.
|
| +// |src_width| specifies the source page width in points.
|
| +// |src_height| specifies the source page height in points.
|
| +// |rotated| True if source page is rotated 90 degree or 270 degree.
|
| +double CalculateScaleFactor(bool scale_to_fit,
|
| + const pp::Rect& content_rect,
|
| + double src_width, double src_height, bool rotated) {
|
| + if (!scale_to_fit || src_width == 0 || src_height == 0)
|
| + return 1.0;
|
| +
|
| + double actual_source_page_width = rotated ? src_height : src_width;
|
| + double actual_source_page_height = rotated ? src_width : src_height;
|
| + double ratio_x = static_cast<double>(content_rect.width()) /
|
| + actual_source_page_width;
|
| + double ratio_y = static_cast<double>(content_rect.height()) /
|
| + actual_source_page_height;
|
| + return std::min(ratio_x, ratio_y);
|
| +}
|
| +
|
| +// Compute source clip box boundaries based on the crop box / media box of
|
| +// source page and scale factor.
|
| +//
|
| +// |page| Handle to the source page. Returned by FPDF_LoadPage function.
|
| +// |scale_factor| specifies the scale factor that should be applied to source
|
| +// clip box boundaries.
|
| +// |rotated| True if source page is rotated 90 degree or 270 degree.
|
| +// |clip_box| out param to hold the computed source clip box values.
|
| +void CalculateClipBoxBoundary(FPDF_PAGE page, double scale_factor, bool rotated,
|
| + ClipBox* clip_box) {
|
| + if (!FPDFPage_GetCropBox(page, &clip_box->left, &clip_box->bottom,
|
| + &clip_box->right, &clip_box->top)) {
|
| + if (!FPDFPage_GetMediaBox(page, &clip_box->left, &clip_box->bottom,
|
| + &clip_box->right, &clip_box->top)) {
|
| + // Make the default size to be letter size (8.5" X 11"). We are just
|
| + // following the PDFium way of handling these corner cases. PDFium always
|
| + // consider US-Letter as the default page size.
|
| + float paper_width = 612;
|
| + float paper_height = 792;
|
| + clip_box->left = 0;
|
| + clip_box->bottom = 0;
|
| + clip_box->right = rotated ? paper_height : paper_width;
|
| + clip_box->top = rotated ? paper_width : paper_height;
|
| + }
|
| + }
|
| + clip_box->left *= scale_factor;
|
| + clip_box->right *= scale_factor;
|
| + clip_box->bottom *= scale_factor;
|
| + clip_box->top *= scale_factor;
|
| +}
|
| +
|
| +// Calculate the clip box translation offset for a page that does need to be
|
| +// scaled. All parameters are in points.
|
| +//
|
| +// |content_rect| specifies the printable area of the destination page, with
|
| +// origin at left-bottom.
|
| +// |source_clip_box| specifies the source clip box positions, relative to
|
| +// origin at left-bottom.
|
| +// |offset_x| and |offset_y| will contain the final translation offsets for the
|
| +// source clip box, relative to origin at left-bottom.
|
| +void CalculateScaledClipBoxOffset(const pp::Rect& content_rect,
|
| + const ClipBox& source_clip_box,
|
| + double* offset_x, double* offset_y) {
|
| + const float clip_box_width = source_clip_box.right - source_clip_box.left;
|
| + const float clip_box_height = source_clip_box.top - source_clip_box.bottom;
|
| +
|
| + // Center the intended clip region to real clip region.
|
| + *offset_x = (content_rect.width() - clip_box_width) / 2 + content_rect.x() -
|
| + source_clip_box.left;
|
| + *offset_y = (content_rect.height() - clip_box_height) / 2 + content_rect.y() -
|
| + source_clip_box.bottom;
|
| +}
|
| +
|
| +// Calculate the clip box offset for a page that does not need to be scaled.
|
| +// All parameters are in points.
|
| +//
|
| +// |content_rect| specifies the printable area of the destination page, with
|
| +// origin at left-bottom.
|
| +// |rotation| specifies the source page rotation values which are N / 90
|
| +// degrees.
|
| +// |page_width| specifies the screen destination page width.
|
| +// |page_height| specifies the screen destination page height.
|
| +// |source_clip_box| specifies the source clip box positions, relative to origin
|
| +// at left-bottom.
|
| +// |offset_x| and |offset_y| will contain the final translation offsets for the
|
| +// source clip box, relative to origin at left-bottom.
|
| +void CalculateNonScaledClipBoxOffset(const pp::Rect& content_rect, int rotation,
|
| + int page_width, int page_height,
|
| + const ClipBox& source_clip_box,
|
| + double* offset_x, double* offset_y) {
|
| + // Align the intended clip region to left-top corner of real clip region.
|
| + switch (rotation) {
|
| + case 0:
|
| + *offset_x = -1 * source_clip_box.left;
|
| + *offset_y = page_height - source_clip_box.top;
|
| + break;
|
| + case 1:
|
| + *offset_x = 0;
|
| + *offset_y = -1 * source_clip_box.bottom;
|
| + break;
|
| + case 2:
|
| + *offset_x = page_width - source_clip_box.right;
|
| + *offset_y = 0;
|
| + break;
|
| + case 3:
|
| + *offset_x = page_height - source_clip_box.right;
|
| + *offset_y = page_width - source_clip_box.top;
|
| + break;
|
| + default:
|
| + NOTREACHED();
|
| + break;
|
| + }
|
| +}
|
| +
|
| +// Do an in-place transformation of objects on |page|. Translate all objects on
|
| +// |page| in |source_clip_box| by (|offset_x|, |offset_y|) and scale them by
|
| +// |scale_factor|.
|
| +//
|
| +// |page| Handle to the page. Returned by FPDF_LoadPage function.
|
| +// |source_clip_box| specifies the source clip box positions, relative to
|
| +// origin at left-bottom.
|
| +// |scale_factor| specifies the scale factor that should be applied to page
|
| +// objects.
|
| +// |offset_x| and |offset_y| specifies the translation offsets for the page
|
| +// objects, relative to origin at left-bottom.
|
| +
|
| +void TransformPageObjects(FPDF_PAGE page, const ClipBox& source_clip_box,
|
| + const double scale_factor, double offset_x,
|
| + double offset_y) {
|
| + const int obj_count = FPDFPage_CountObject(page);
|
| +
|
| + // Create a new clip path.
|
| + FPDF_CLIPPATH clip_path = FPDF_CreateClipPath(
|
| + source_clip_box.left + offset_x, source_clip_box.bottom + offset_y,
|
| + source_clip_box.right + offset_x, source_clip_box.top + offset_y);
|
| +
|
| + for (int obj_idx = 0; obj_idx < obj_count; ++obj_idx) {
|
| + FPDF_PAGEOBJECT page_obj = FPDFPage_GetObject(page, obj_idx);
|
| + FPDFPageObj_Transform(page_obj, scale_factor, 0, 0, scale_factor,
|
| + offset_x, offset_y);
|
| + FPDFPageObj_TransformClipPath(page_obj, scale_factor, 0, 0, scale_factor,
|
| + offset_x, offset_y);
|
| + }
|
| + FPDFPage_TransformAnnots(page, scale_factor, 0, 0, scale_factor,
|
| + offset_x, offset_y);
|
| + FPDFPage_GenerateContent(page);
|
| +
|
| + // Add a extra clip path to the new pdf page here.
|
| + FPDFPage_InsertClipPath(page, clip_path);
|
| +
|
| + // Destroy the clip path.
|
| + FPDF_DestroyClipPath(clip_path);
|
| +}
|
| +
|
| +bool InitializeSDK(void* data) {
|
| + FPDF_InitLibrary(data);
|
| +
|
| +#if defined(OS_LINUX)
|
| + // Font loading doesn't work in the renderer sandbox in Linux.
|
| + FPDF_SetSystemFontInfo(&g_font_info);
|
| +#endif
|
| +
|
| + FSDK_SetOOMHandler(&g_oom_info);
|
| + FSDK_SetUnSpObjProcessHandler(&g_unsuppored_info);
|
| +
|
| + return true;
|
| +}
|
| +
|
| +void ShutdownSDK() {
|
| + FPDF_DestroyLibrary();
|
| +}
|
| +
|
| +PDFEngine* PDFEngine::Create(PDFEngine::Client* client) {
|
| + return new PDFiumEngine(client);
|
| +}
|
| +
|
| +PDFiumEngine::PDFiumEngine(PDFEngine::Client* client)
|
| + : client_(client),
|
| + current_zoom_(1.0),
|
| + current_rotation_(0),
|
| + doc_loader_(this),
|
| + password_tries_remaining_(0),
|
| + doc_(NULL),
|
| + form_(NULL),
|
| + defer_page_unload_(false),
|
| + selecting_(false),
|
| + next_page_to_search_(-1),
|
| + last_page_to_search_(-1),
|
| + last_character_index_to_search_(-1),
|
| + current_find_index_(-1),
|
| + permissions_(0),
|
| + fpdf_availability_(NULL),
|
| + next_timer_id_(0),
|
| + last_page_mouse_down_(-1),
|
| + first_visible_page_(-1),
|
| + most_visible_page_(-1),
|
| + called_do_document_action_(false),
|
| + render_grayscale_(false),
|
| + progressive_paint_timeout_(0),
|
| + getting_password_(false) {
|
| + find_factory_.Initialize(this);
|
| + password_factory_.Initialize(this);
|
| +
|
| + file_access_.m_FileLen = 0;
|
| + file_access_.m_GetBlock = &GetBlock;
|
| + file_access_.m_Param = &doc_loader_;
|
| +
|
| + file_availability_.version = 1;
|
| + file_availability_.IsDataAvail = &IsDataAvail;
|
| + file_availability_.loader = &doc_loader_;
|
| +
|
| + download_hints_.version = 1;
|
| + download_hints_.AddSegment = &AddSegment;
|
| + download_hints_.loader = &doc_loader_;
|
| +
|
| + // Initialize FPDF_FORMFILLINFO member variables. Deriving from this struct
|
| + // allows the static callbacks to be able to cast the FPDF_FORMFILLINFO in
|
| + // callbacks to ourself instead of maintaining a map of them to
|
| + // PDFiumEngine.
|
| + FPDF_FORMFILLINFO::version = 1;
|
| + FPDF_FORMFILLINFO::m_pJsPlatform = this;
|
| + FPDF_FORMFILLINFO::Release = NULL;
|
| + FPDF_FORMFILLINFO::FFI_Invalidate = Form_Invalidate;
|
| + FPDF_FORMFILLINFO::FFI_OutputSelectedRect = Form_OutputSelectedRect;
|
| + FPDF_FORMFILLINFO::FFI_SetCursor = Form_SetCursor;
|
| + FPDF_FORMFILLINFO::FFI_SetTimer = Form_SetTimer;
|
| + FPDF_FORMFILLINFO::FFI_KillTimer = Form_KillTimer;
|
| + FPDF_FORMFILLINFO::FFI_GetLocalTime = Form_GetLocalTime;
|
| + FPDF_FORMFILLINFO::FFI_OnChange = Form_OnChange;
|
| + FPDF_FORMFILLINFO::FFI_GetPage = Form_GetPage;
|
| + FPDF_FORMFILLINFO::FFI_GetCurrentPage = Form_GetCurrentPage;
|
| + FPDF_FORMFILLINFO::FFI_GetRotation = Form_GetRotation;
|
| + FPDF_FORMFILLINFO::FFI_ExecuteNamedAction = Form_ExecuteNamedAction;
|
| + FPDF_FORMFILLINFO::FFI_SetTextFieldFocus = Form_SetTextFieldFocus;
|
| + FPDF_FORMFILLINFO::FFI_DoURIAction = Form_DoURIAction;
|
| + FPDF_FORMFILLINFO::FFI_DoGoToAction = Form_DoGoToAction;
|
| +
|
| + IPDF_JSPLATFORM::version = 1;
|
| + IPDF_JSPLATFORM::app_alert = Form_Alert;
|
| + IPDF_JSPLATFORM::app_beep = Form_Beep;
|
| + IPDF_JSPLATFORM::app_response = Form_Response;
|
| + IPDF_JSPLATFORM::Doc_getFilePath = Form_GetFilePath;
|
| + IPDF_JSPLATFORM::Doc_mail = Form_Mail;
|
| + IPDF_JSPLATFORM::Doc_print = Form_Print;
|
| + IPDF_JSPLATFORM::Doc_submitForm = Form_SubmitForm;
|
| + IPDF_JSPLATFORM::Doc_gotoPage = Form_GotoPage;
|
| + IPDF_JSPLATFORM::Field_browse = Form_Browse;
|
| +
|
| + IFSDK_PAUSE::version = 1;
|
| + IFSDK_PAUSE::user = NULL;
|
| + IFSDK_PAUSE::NeedToPauseNow = Pause_NeedToPauseNow;
|
| +}
|
| +
|
| +PDFiumEngine::~PDFiumEngine() {
|
| + STLDeleteElements(&pages_);
|
| + if (doc_) {
|
| + if (form_) {
|
| + FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_WC);
|
| + FPDFDOC_ExitFormFillEnviroument(form_);
|
| + }
|
| + FPDF_CloseDocument(doc_);
|
| + }
|
| +
|
| + if (fpdf_availability_)
|
| + FPDFAvail_Destroy(fpdf_availability_);
|
| +}
|
| +
|
| +int PDFiumEngine::GetBlock(void* param, unsigned long position,
|
| + unsigned char* buffer, unsigned long size) {
|
| + DocumentLoader* loader = static_cast<DocumentLoader*>(param);
|
| + return loader->GetBlock(position, size, buffer);
|
| +}
|
| +
|
| +bool PDFiumEngine::IsDataAvail(FX_FILEAVAIL* param,
|
| + size_t offset, size_t size) {
|
| + PDFiumEngine::FileAvail* file_avail =
|
| + static_cast<PDFiumEngine::FileAvail*>(param);
|
| + return file_avail->loader->IsDataAvailable(offset, size);
|
| +}
|
| +
|
| +void PDFiumEngine::AddSegment(FX_DOWNLOADHINTS* param,
|
| + size_t offset, size_t size) {
|
| + PDFiumEngine::DownloadHints* download_hints =
|
| + static_cast<PDFiumEngine::DownloadHints*>(param);
|
| + return download_hints->loader->RequestData(offset, size);
|
| +}
|
| +
|
| +bool PDFiumEngine::New(const char* url) {
|
| + url_ = url;
|
| + headers_ = std::string();
|
| + return true;
|
| +}
|
| +
|
| +bool PDFiumEngine::New(const char* url,
|
| + const char* headers) {
|
| + url_ = url;
|
| + if (!headers)
|
| + headers_ = std::string();
|
| + else
|
| + headers_ = headers;
|
| + return true;
|
| +}
|
| +
|
| +void PDFiumEngine::PageOffsetUpdated(const pp::Point& page_offset) {
|
| + page_offset_ = page_offset;
|
| +}
|
| +
|
| +void PDFiumEngine::PluginSizeUpdated(const pp::Size& size) {
|
| + CancelPaints();
|
| +
|
| + plugin_size_ = size;
|
| + CalculateVisiblePages();
|
| +}
|
| +
|
| +void PDFiumEngine::ScrolledToXPosition(int position) {
|
| + CancelPaints();
|
| +
|
| + int old_x = position_.x();
|
| + position_.set_x(position);
|
| + CalculateVisiblePages();
|
| + client_->Scroll(pp::Point(old_x - position, 0));
|
| +}
|
| +
|
| +void PDFiumEngine::ScrolledToYPosition(int position) {
|
| + CancelPaints();
|
| +
|
| + int old_y = position_.y();
|
| + position_.set_y(position);
|
| + CalculateVisiblePages();
|
| + client_->Scroll(pp::Point(0, old_y - position));
|
| +}
|
| +
|
| +void PDFiumEngine::PrePaint() {
|
| + for (size_t i = 0; i < progressive_paints_.size(); ++i)
|
| + progressive_paints_[i].painted_ = false;
|
| +}
|
| +
|
| +void PDFiumEngine::Paint(const pp::Rect& rect,
|
| + pp::ImageData* image_data,
|
| + std::vector<pp::Rect>* ready,
|
| + std::vector<pp::Rect>* pending) {
|
| + pp::Rect leftover = rect;
|
| + for (size_t i = 0; i < visible_pages_.size(); ++i) {
|
| + int index = visible_pages_[i];
|
| + pp::Rect page_rect = pages_[index]->rect();
|
| + // Convert the current page's rectangle to screen rectangle. We do this
|
| + // instead of the reverse (converting the dirty rectangle from screen to
|
| + // page coordinates) because then we'd have to convert back to screen
|
| + // coordinates, and the rounding errors sometime leave pixels dirty or even
|
| + // move the text up or down a pixel when zoomed.
|
| + pp::Rect page_rect_in_screen = GetPageScreenRect(index);
|
| + pp::Rect dirty_in_screen = page_rect_in_screen.Intersect(leftover);
|
| + if (dirty_in_screen.IsEmpty())
|
| + continue;
|
| +
|
| + leftover = leftover.Subtract(dirty_in_screen);
|
| +
|
| + if (pages_[index]->available()) {
|
| + int progressive = GetProgressiveIndex(index);
|
| + if (progressive != -1 &&
|
| + progressive_paints_[progressive].rect != dirty_in_screen) {
|
| + // The PDFium code can only handle one progressive paint at a time, so
|
| + // queue this up. Previously we used to merge the rects when this
|
| + // happened, but it made scrolling up on complex PDFs very slow since
|
| + // there would be a damaged rect at the top (from scroll) and at the
|
| + // bottom (from toolbar).
|
| + pending->push_back(dirty_in_screen);
|
| + continue;
|
| + }
|
| +
|
| + if (progressive == -1) {
|
| + progressive = StartPaint(index, dirty_in_screen);
|
| + progressive_paint_timeout_ = kMaxInitialProgressivePaintTimeMs;
|
| + } else {
|
| + progressive_paint_timeout_ = kMaxProgressivePaintTimeMs;
|
| + }
|
| +
|
| + progressive_paints_[progressive].painted_ = true;
|
| + if (ContinuePaint(progressive, image_data)) {
|
| + FinishPaint(progressive, image_data);
|
| + ready->push_back(dirty_in_screen);
|
| + } else {
|
| + pending->push_back(dirty_in_screen);
|
| + }
|
| + } else {
|
| + PaintUnavailablePage(index, dirty_in_screen, image_data);
|
| + ready->push_back(dirty_in_screen);
|
| + }
|
| + }
|
| +}
|
| +
|
| +void PDFiumEngine::PostPaint() {
|
| + for (size_t i = 0; i < progressive_paints_.size(); ++i) {
|
| + if (progressive_paints_[i].painted_)
|
| + continue;
|
| +
|
| + // This rectangle must have been merged with another one, that's why we
|
| + // weren't asked to paint it. Remove it or otherwise we'll never finish
|
| + // painting.
|
| + FPDF_RenderPage_Close(
|
| + pages_[progressive_paints_[i].page_index]->GetPage());
|
| + FPDFBitmap_Destroy(progressive_paints_[i].bitmap);
|
| + progressive_paints_.erase(progressive_paints_.begin() + i);
|
| + --i;
|
| + }
|
| +}
|
| +
|
| +bool PDFiumEngine::HandleDocumentLoad(const pp::URLLoader& loader) {
|
| + password_tries_remaining_ = kMaxPasswordTries;
|
| + return doc_loader_.Init(loader, url_, headers_);
|
| +}
|
| +
|
| +pp::Instance* PDFiumEngine::GetPluginInstance() {
|
| + return client_->GetPluginInstance();
|
| +}
|
| +
|
| +pp::URLLoader PDFiumEngine::CreateURLLoader() {
|
| + return client_->CreateURLLoader();
|
| +}
|
| +
|
| +void PDFiumEngine::AppendPage(PDFEngine* engine, int index) {
|
| + // Unload and delete the blank page before appending.
|
| + pages_[index]->Unload();
|
| + pages_[index]->set_calculated_links(false);
|
| + pp::Size curr_page_size = GetPageSize(index);
|
| + FPDFPage_Delete(doc_, index);
|
| + FPDF_ImportPages(doc_,
|
| + static_cast<PDFiumEngine*>(engine)->doc(),
|
| + "1",
|
| + index);
|
| + pp::Size new_page_size = GetPageSize(index);
|
| + if (curr_page_size != new_page_size)
|
| + LoadPageInfo(true);
|
| + client_->Invalidate(GetPageScreenRect(index));
|
| +}
|
| +
|
| +pp::Point PDFiumEngine::GetScrollPosition() {
|
| + return position_;
|
| +}
|
| +
|
| +void PDFiumEngine::SetScrollPosition(const pp::Point& position) {
|
| + position_ = position;
|
| +}
|
| +
|
| +bool PDFiumEngine::IsProgressiveLoad() {
|
| + return doc_loader_.is_partial_document();
|
| +}
|
| +
|
| +void PDFiumEngine::OnPartialDocumentLoaded() {
|
| + file_access_.m_FileLen = doc_loader_.document_size();
|
| + fpdf_availability_ = FPDFAvail_Create(&file_availability_, &file_access_);
|
| + DCHECK(fpdf_availability_);
|
| +
|
| + // Currently engine does not deal efficiently with some non-linearized files.
|
| + // See http://code.google.com/p/chromium/issues/detail?id=59400
|
| + // To improve user experience we download entire file for non-linearized PDF.
|
| + if (!FPDFAvail_IsLinearized(fpdf_availability_)) {
|
| + doc_loader_.RequestData(0, doc_loader_.document_size());
|
| + return;
|
| + }
|
| +
|
| + LoadDocument();
|
| +}
|
| +
|
| +void PDFiumEngine::OnPendingRequestComplete() {
|
| + if (!doc_ || !form_) {
|
| + LoadDocument();
|
| + return;
|
| + }
|
| +
|
| + // LoadDocument() will result in |pending_pages_| being reset so there's no
|
| + // need to run the code below in that case.
|
| + bool update_pages = false;
|
| + std::vector<int> still_pending;
|
| + for (size_t i = 0; i < pending_pages_.size(); ++i) {
|
| + if (CheckPageAvailable(pending_pages_[i], &still_pending)) {
|
| + update_pages = true;
|
| + if (IsPageVisible(pending_pages_[i]))
|
| + client_->Invalidate(GetPageScreenRect(pending_pages_[i]));
|
| + }
|
| + }
|
| + pending_pages_.swap(still_pending);
|
| + if (update_pages)
|
| + LoadPageInfo(true);
|
| +}
|
| +
|
| +void PDFiumEngine::OnNewDataAvailable() {
|
| + client_->DocumentLoadProgress(doc_loader_.GetAvailableData(),
|
| + doc_loader_.document_size());
|
| +}
|
| +
|
| +void PDFiumEngine::OnDocumentComplete() {
|
| + if (!doc_ || !form_) {
|
| + file_access_.m_FileLen = doc_loader_.document_size();
|
| + LoadDocument();
|
| + return;
|
| + }
|
| +
|
| + bool need_update = false;
|
| + for (size_t i = 0; i < pages_.size(); ++i) {
|
| + if (pages_[i]->available())
|
| + continue;
|
| +
|
| + pages_[i]->set_available(true);
|
| + // We still need to call IsPageAvail() even if the whole document is
|
| + // already downloaded.
|
| + FPDFAvail_IsPageAvail(fpdf_availability_, i, &download_hints_);
|
| + need_update = true;
|
| + if (IsPageVisible(i))
|
| + client_->Invalidate(GetPageScreenRect(i));
|
| + }
|
| + if (need_update)
|
| + LoadPageInfo(true);
|
| +
|
| + FinishLoadingDocument();
|
| +}
|
| +
|
| +void PDFiumEngine::FinishLoadingDocument() {
|
| + DCHECK(doc_loader_.IsDocumentComplete() && doc_);
|
| + if (called_do_document_action_)
|
| + return;
|
| + called_do_document_action_ = true;
|
| +
|
| + // These can only be called now, as the JS might end up needing a page.
|
| + FORM_DoDocumentJSAction(form_);
|
| + FORM_DoDocumentOpenAction(form_);
|
| + if (most_visible_page_ != -1) {
|
| + FPDF_PAGE new_page = pages_[most_visible_page_]->GetPage();
|
| + FORM_DoPageAAction(new_page, form_, FPDFPAGE_AACTION_OPEN);
|
| + }
|
| +
|
| + if (doc_) // This can only happen if loading |doc_| fails.
|
| + client_->DocumentLoadComplete(pages_.size());
|
| +}
|
| +
|
| +void PDFiumEngine::UnsupportedFeature(int type) {
|
| + std::string feature;
|
| + switch (type) {
|
| + case FPDF_UNSP_DOC_XFAFORM:
|
| + feature = "XFA";
|
| + break;
|
| + case FPDF_UNSP_DOC_PORTABLECOLLECTION:
|
| + feature = "Portfolios_Packages";
|
| + break;
|
| + case FPDF_UNSP_DOC_ATTACHMENT:
|
| + case FPDF_UNSP_ANNOT_ATTACHMENT:
|
| + feature = "Attachment";
|
| + break;
|
| + case FPDF_UNSP_DOC_SECURITY:
|
| + feature = "Rights_Management";
|
| + break;
|
| + case FPDF_UNSP_DOC_SHAREDREVIEW:
|
| + feature = "Shared_Review";
|
| + break;
|
| + case FPDF_UNSP_DOC_SHAREDFORM_ACROBAT:
|
| + case FPDF_UNSP_DOC_SHAREDFORM_FILESYSTEM:
|
| + case FPDF_UNSP_DOC_SHAREDFORM_EMAIL:
|
| + feature = "Shared_Form";
|
| + break;
|
| + case FPDF_UNSP_ANNOT_3DANNOT:
|
| + feature = "3D";
|
| + break;
|
| + case FPDF_UNSP_ANNOT_MOVIE:
|
| + feature = "Movie";
|
| + break;
|
| + case FPDF_UNSP_ANNOT_SOUND:
|
| + feature = "Sound";
|
| + break;
|
| + case FPDF_UNSP_ANNOT_SCREEN_MEDIA:
|
| + case FPDF_UNSP_ANNOT_SCREEN_RICHMEDIA:
|
| + feature = "Screen";
|
| + break;
|
| + case FPDF_UNSP_ANNOT_SIG:
|
| + feature = "Digital_Signature";
|
| + break;
|
| + }
|
| + client_->DocumentHasUnsupportedFeature(feature);
|
| +}
|
| +
|
| +void PDFiumEngine::ContinueFind(int32_t result) {
|
| + StartFind(current_find_text_.c_str(), !!result);
|
| +}
|
| +
|
| +bool PDFiumEngine::HandleEvent(const pp::InputEvent& event) {
|
| + DCHECK(!defer_page_unload_);
|
| + defer_page_unload_ = true;
|
| + bool rv = false;
|
| + switch (event.GetType()) {
|
| + case PP_INPUTEVENT_TYPE_MOUSEDOWN:
|
| + rv = OnMouseDown(pp::MouseInputEvent(event));
|
| + break;
|
| + case PP_INPUTEVENT_TYPE_MOUSEUP:
|
| + rv = OnMouseUp(pp::MouseInputEvent(event));
|
| + break;
|
| + case PP_INPUTEVENT_TYPE_MOUSEMOVE:
|
| + rv = OnMouseMove(pp::MouseInputEvent(event));
|
| + break;
|
| + case PP_INPUTEVENT_TYPE_KEYDOWN:
|
| + rv = OnKeyDown(pp::KeyboardInputEvent(event));
|
| + break;
|
| + case PP_INPUTEVENT_TYPE_KEYUP:
|
| + rv = OnKeyUp(pp::KeyboardInputEvent(event));
|
| + break;
|
| + case PP_INPUTEVENT_TYPE_CHAR:
|
| + rv = OnChar(pp::KeyboardInputEvent(event));
|
| + break;
|
| + default:
|
| + break;
|
| + }
|
| +
|
| + DCHECK(defer_page_unload_);
|
| + defer_page_unload_ = false;
|
| + for (size_t i = 0; i < deferred_page_unloads_.size(); ++i)
|
| + pages_[deferred_page_unloads_[i]]->Unload();
|
| + deferred_page_unloads_.clear();
|
| + return rv;
|
| +}
|
| +
|
| +uint32_t PDFiumEngine::QuerySupportedPrintOutputFormats() {
|
| + if (!HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY))
|
| + return 0;
|
| + return PP_PRINTOUTPUTFORMAT_PDF;
|
| +}
|
| +
|
| +void PDFiumEngine::PrintBegin() {
|
| + FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_WP);
|
| +}
|
| +
|
| +pp::Resource PDFiumEngine::PrintPages(
|
| + const PP_PrintPageNumberRange_Dev* page_ranges, uint32_t page_range_count,
|
| + const PP_PrintSettings_Dev& print_settings) {
|
| + if (HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))
|
| + return PrintPagesAsPDF(page_ranges, page_range_count, print_settings);
|
| + else if (HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY))
|
| + return PrintPagesAsRasterPDF(page_ranges, page_range_count, print_settings);
|
| + return pp::Resource();
|
| +}
|
| +
|
| +pp::Buffer_Dev PDFiumEngine::PrintPagesAsRasterPDF(
|
| + const PP_PrintPageNumberRange_Dev* page_ranges, uint32_t page_range_count,
|
| + const PP_PrintSettings_Dev& print_settings) {
|
| + if (!page_range_count)
|
| + return pp::Buffer_Dev();
|
| +
|
| + // If document is not downloaded yet, disable printing.
|
| + if (doc_ && !doc_loader_.IsDocumentComplete())
|
| + return pp::Buffer_Dev();
|
| +
|
| + FPDF_DOCUMENT output_doc = FPDF_CreateNewDocument();
|
| + if (!output_doc)
|
| + return pp::Buffer_Dev();
|
| +
|
| + SaveSelectedFormForPrint();
|
| +
|
| + std::vector<PDFiumPage> pages_to_print;
|
| + // width and height of source PDF pages.
|
| + std::vector<std::pair<double, double> > source_page_sizes;
|
| + // Collect pages to print and sizes of source pages.
|
| + std::vector<uint32_t> page_numbers =
|
| + GetPageNumbersFromPrintPageNumberRange(page_ranges, page_range_count);
|
| + for (size_t i = 0; i < page_numbers.size(); ++i) {
|
| + uint32_t page_number = page_numbers[i];
|
| + FPDF_PAGE pdf_page = FPDF_LoadPage(doc_, page_number);
|
| + double source_page_width = FPDF_GetPageWidth(pdf_page);
|
| + double source_page_height = FPDF_GetPageHeight(pdf_page);
|
| + source_page_sizes.push_back(std::make_pair(source_page_width,
|
| + source_page_height));
|
| +
|
| + int width_in_pixels = ConvertUnit(source_page_width,
|
| + static_cast<int>(kPointsPerInch),
|
| + print_settings.dpi);
|
| + int height_in_pixels = ConvertUnit(source_page_height,
|
| + static_cast<int>(kPointsPerInch),
|
| + print_settings.dpi);
|
| +
|
| + pp::Rect rect(width_in_pixels, height_in_pixels);
|
| + pages_to_print.push_back(PDFiumPage(this, page_number, rect, true));
|
| + FPDF_ClosePage(pdf_page);
|
| + }
|
| +
|
| +#if defined(OS_LINUX)
|
| + g_last_instance_id = client_->GetPluginInstance()->pp_instance();
|
| +#endif
|
| +
|
| + size_t i = 0;
|
| + for (; i < pages_to_print.size(); ++i) {
|
| + double source_page_width = source_page_sizes[i].first;
|
| + double source_page_height = source_page_sizes[i].second;
|
| + const pp::Size& bitmap_size(pages_to_print[i].rect().size());
|
| +
|
| + // Use temp_doc to compress image by saving PDF to buffer.
|
| + FPDF_DOCUMENT temp_doc = FPDF_CreateNewDocument();
|
| + if (!temp_doc)
|
| + break;
|
| +
|
| + FPDF_PAGE output_page = FPDFPage_New(temp_doc, 0, source_page_width,
|
| + source_page_height);
|
| +
|
| + pp::ImageData image = pp::ImageData(client_->GetPluginInstance(),
|
| + PP_IMAGEDATAFORMAT_BGRA_PREMUL,
|
| + bitmap_size,
|
| + false);
|
| +
|
| + FPDF_BITMAP bitmap = FPDFBitmap_CreateEx(bitmap_size.width(),
|
| + bitmap_size.height(),
|
| + FPDFBitmap_BGRx,
|
| + image.data(),
|
| + image.stride());
|
| +
|
| + // Clear the bitmap
|
| + FPDFBitmap_FillRect(bitmap, 0, 0, bitmap_size.width(),
|
| + bitmap_size.height(), 255, 255, 255, 255);
|
| +
|
| + pp::Rect page_rect = pages_to_print[i].rect();
|
| + FPDF_RenderPageBitmap(bitmap, pages_to_print[i].GetPrintPage(),
|
| + page_rect.x(), page_rect.y(),
|
| + page_rect.width(), page_rect.height(),
|
| + print_settings.orientation,
|
| + FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);
|
| +
|
| + double ratio_x = (static_cast<double>(bitmap_size.width()) *
|
| + kPointsPerInch) / print_settings.dpi;
|
| + double ratio_y = (static_cast<double>(bitmap_size.height()) *
|
| + kPointsPerInch) / print_settings.dpi;
|
| +
|
| + // Add the bitmap to an image object and add the image object to the output
|
| + // page.
|
| + FPDF_PAGEOBJECT img_obj = FPDFPageObj_NewImgeObj(output_doc);
|
| + FPDFImageObj_SetBitmap(&output_page, 1, img_obj, bitmap);
|
| + FPDFImageObj_SetMatrix(img_obj, ratio_x, 0, 0, ratio_y, 0, 0);
|
| + FPDFPage_InsertObject(output_page, img_obj);
|
| + FPDFPage_GenerateContent(output_page);
|
| + FPDF_ClosePage(output_page);
|
| +
|
| + pages_to_print[i].ClosePrintPage();
|
| + FPDFBitmap_Destroy(bitmap);
|
| +
|
| + pp::Buffer_Dev buffer = GetFlattenedPrintData(temp_doc);
|
| + FPDF_CloseDocument(temp_doc);
|
| +
|
| + PDFiumMemBufferFileRead file_read(buffer.data(), buffer.size());
|
| + temp_doc = FPDF_LoadCustomDocument(&file_read, NULL);
|
| + if (!temp_doc)
|
| + break;
|
| +
|
| + FPDF_BOOL imported = FPDF_ImportPages(output_doc, temp_doc, "1", i);
|
| + FPDF_CloseDocument(temp_doc);
|
| + if (!imported)
|
| + break;
|
| + }
|
| +
|
| + pp::Buffer_Dev buffer;
|
| + if (i == pages_to_print.size()) {
|
| + FPDF_CopyViewerPreferences(output_doc, doc_);
|
| + FitContentsToPrintableAreaIfRequired(output_doc, print_settings);
|
| + // Now flatten all the output pages.
|
| + buffer = GetFlattenedPrintData(output_doc);
|
| + }
|
| + FPDF_CloseDocument(output_doc);
|
| + return buffer;
|
| +}
|
| +
|
| +pp::Buffer_Dev PDFiumEngine::GetFlattenedPrintData(const FPDF_DOCUMENT& doc) {
|
| + int page_count = FPDF_GetPageCount(doc);
|
| + bool flatten_succeeded = true;
|
| + for (int i = 0; i < page_count; ++i) {
|
| + FPDF_PAGE page = FPDF_LoadPage(doc, i);
|
| + DCHECK(page);
|
| + if (page) {
|
| + int flatten_ret = FPDFPage_Flatten(page, FLAT_PRINT);
|
| + FPDF_ClosePage(page);
|
| + if (flatten_ret == FLATTEN_FAIL) {
|
| + flatten_succeeded = false;
|
| + break;
|
| + }
|
| + } else {
|
| + flatten_succeeded = false;
|
| + break;
|
| + }
|
| + }
|
| + if (!flatten_succeeded) {
|
| + FPDF_CloseDocument(doc);
|
| + return pp::Buffer_Dev();
|
| + }
|
| +
|
| + pp::Buffer_Dev buffer;
|
| + PDFiumMemBufferFileWrite output_file_write;
|
| + if (FPDF_SaveAsCopy(doc, &output_file_write, 0)) {
|
| + buffer = pp::Buffer_Dev(
|
| + client_->GetPluginInstance(), output_file_write.size());
|
| + if (!buffer.is_null()) {
|
| + memcpy(buffer.data(), output_file_write.buffer().c_str(),
|
| + output_file_write.size());
|
| + }
|
| + }
|
| + return buffer;
|
| +}
|
| +
|
| +pp::Buffer_Dev PDFiumEngine::PrintPagesAsPDF(
|
| + const PP_PrintPageNumberRange_Dev* page_ranges, uint32_t page_range_count,
|
| + const PP_PrintSettings_Dev& print_settings) {
|
| + if (!page_range_count)
|
| + return pp::Buffer_Dev();
|
| +
|
| + DCHECK(doc_);
|
| + FPDF_DOCUMENT output_doc = FPDF_CreateNewDocument();
|
| + if (!output_doc)
|
| + return pp::Buffer_Dev();
|
| +
|
| + SaveSelectedFormForPrint();
|
| +
|
| + std::string page_number_str;
|
| + for (uint32_t index = 0; index < page_range_count; ++index) {
|
| + if (!page_number_str.empty())
|
| + page_number_str.append(",");
|
| + page_number_str.append(
|
| + base::IntToString(page_ranges[index].first_page_number + 1));
|
| + if (page_ranges[index].first_page_number !=
|
| + page_ranges[index].last_page_number) {
|
| + page_number_str.append("-");
|
| + page_number_str.append(
|
| + base::IntToString(page_ranges[index].last_page_number + 1));
|
| + }
|
| + }
|
| +
|
| + std::vector<uint32_t> page_numbers =
|
| + GetPageNumbersFromPrintPageNumberRange(page_ranges, page_range_count);
|
| + for (size_t i = 0; i < page_numbers.size(); ++i) {
|
| + uint32_t page_number = page_numbers[i];
|
| + pages_[page_number]->GetPage();
|
| + if (!IsPageVisible(page_numbers[i]))
|
| + pages_[page_number]->Unload();
|
| + }
|
| +
|
| + FPDF_CopyViewerPreferences(output_doc, doc_);
|
| + if (!FPDF_ImportPages(output_doc, doc_, page_number_str.c_str(), 0)) {
|
| + FPDF_CloseDocument(output_doc);
|
| + return pp::Buffer_Dev();
|
| + }
|
| +
|
| + FitContentsToPrintableAreaIfRequired(output_doc, print_settings);
|
| +
|
| + // Now flatten all the output pages.
|
| + pp::Buffer_Dev buffer = GetFlattenedPrintData(output_doc);
|
| + FPDF_CloseDocument(output_doc);
|
| + return buffer;
|
| +}
|
| +
|
| +void PDFiumEngine::FitContentsToPrintableAreaIfRequired(
|
| + const FPDF_DOCUMENT& doc, const PP_PrintSettings_Dev& print_settings) {
|
| + // Check to see if we need to fit pdf contents to printer paper size.
|
| + if (print_settings.print_scaling_option !=
|
| + PP_PRINTSCALINGOPTION_SOURCE_SIZE) {
|
| + int num_pages = FPDF_GetPageCount(doc);
|
| + // In-place transformation is more efficient than creating a new
|
| + // transformed document from the source document. Therefore, transform
|
| + // every page to fit the contents in the selected printer paper.
|
| + for (int i = 0; i < num_pages; ++i) {
|
| + FPDF_PAGE page = FPDF_LoadPage(doc, i);
|
| + TransformPDFPageForPrinting(page, print_settings);
|
| + FPDF_ClosePage(page);
|
| + }
|
| + }
|
| +}
|
| +
|
| +void PDFiumEngine::SaveSelectedFormForPrint() {
|
| + FORM_ForceToKillFocus(form_);
|
| + client_->FormTextFieldFocusChange(false);
|
| +}
|
| +
|
| +void PDFiumEngine::PrintEnd() {
|
| + FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_DP);
|
| +}
|
| +
|
| +PDFiumPage::Area PDFiumEngine::GetCharIndex(
|
| + const pp::MouseInputEvent& event, int* page_index,
|
| + int* char_index, PDFiumPage::LinkTarget* target) {
|
| + // First figure out which page this is in.
|
| + pp::Point mouse_point = event.GetPosition();
|
| + pp::Point point(
|
| + static_cast<int>((mouse_point.x() + position_.x()) / current_zoom_),
|
| + static_cast<int>((mouse_point.y() + position_.y()) / current_zoom_));
|
| + return GetCharIndex(point, page_index, char_index, target);
|
| +}
|
| +
|
| +PDFiumPage::Area PDFiumEngine::GetCharIndex(
|
| + const pp::Point& point,
|
| + int* page_index,
|
| + int* char_index,
|
| + PDFiumPage::LinkTarget* target) {
|
| + int page = -1;
|
| + for (size_t i = 0; i < visible_pages_.size(); ++i) {
|
| + if (pages_[visible_pages_[i]]->rect().Contains(point)) {
|
| + page = visible_pages_[i];
|
| + break;
|
| + }
|
| + }
|
| + if (page == -1)
|
| + return PDFiumPage::NONSELECTABLE_AREA;
|
| +
|
| + // If the page hasn't finished rendering, calling into the page sometimes
|
| + // leads to hangs.
|
| + for (size_t i = 0; i < progressive_paints_.size(); ++i) {
|
| + if (progressive_paints_[i].page_index == page)
|
| + return PDFiumPage::NONSELECTABLE_AREA;
|
| + }
|
| +
|
| + *page_index = page;
|
| + return pages_[page]->GetCharIndex(point, current_rotation_, char_index,
|
| + target);
|
| +}
|
| +
|
| +bool PDFiumEngine::OnMouseDown(const pp::MouseInputEvent& event) {
|
| + if (event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_LEFT)
|
| + return false;
|
| +
|
| + SelectionChangeInvalidator selection_invalidator(this);
|
| + selection_.clear();
|
| +
|
| + int page_index = -1;
|
| + int char_index = -1;
|
| + PDFiumPage::LinkTarget target;
|
| + PDFiumPage::Area area = GetCharIndex(event, &page_index,
|
| + &char_index, &target);
|
| + if (area == PDFiumPage::WEBLINK_AREA) {
|
| + bool open_in_new_tab = !!(event.GetModifiers() & kDefaultKeyModifier);
|
| + client_->NavigateTo(target.url, open_in_new_tab);
|
| + client_->FormTextFieldFocusChange(false);
|
| + return true;
|
| + }
|
| +
|
| + if (area == PDFiumPage::DOCLINK_AREA) {
|
| + client_->ScrollToPage(target.page);
|
| + client_->FormTextFieldFocusChange(false);
|
| + return true;
|
| + }
|
| +
|
| + if (page_index != -1) {
|
| + last_page_mouse_down_ = page_index;
|
| + double page_x, page_y;
|
| + pp::Point point = event.GetPosition();
|
| + DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y);
|
| +
|
| + FORM_OnLButtonDown(form_, pages_[page_index]->GetPage(), 0, page_x, page_y);
|
| + int control = FPDPage_HasFormFieldAtPoint(
|
| + form_, pages_[page_index]->GetPage(), page_x, page_y);
|
| + if (control > FPDF_FORMFIELD_UNKNOWN) { // returns -1 sometimes...
|
| + client_->FormTextFieldFocusChange(control == FPDF_FORMFIELD_TEXTFIELD ||
|
| + control == FPDF_FORMFIELD_COMBOBOX);
|
| + return true; // Return now before we get into the selection code.
|
| + }
|
| + }
|
| +
|
| + client_->FormTextFieldFocusChange(false);
|
| +
|
| + if (area != PDFiumPage::TEXT_AREA)
|
| + return true; // Return true so WebKit doesn't do its own highlighting.
|
| +
|
| + if (event.GetClickCount() == 1) {
|
| + OnSingleClick(page_index, char_index);
|
| + } else if (event.GetClickCount() == 2 ||
|
| + event.GetClickCount() == 3) {
|
| + OnMultipleClick(event.GetClickCount(), page_index, char_index);
|
| + }
|
| +
|
| + return true;
|
| +}
|
| +
|
| +void PDFiumEngine::OnSingleClick(int page_index, int char_index) {
|
| + selecting_ = true;
|
| + selection_.push_back(PDFiumRange(pages_[page_index], char_index, 0));
|
| +}
|
| +
|
| +void PDFiumEngine::OnMultipleClick(int click_count,
|
| + int page_index,
|
| + int char_index) {
|
| + // It would be more efficient if the SDK could support finding a space, but
|
| + // now it doesn't.
|
| + int start_index = char_index;
|
| + do {
|
| + base::char16 cur = pages_[page_index]->GetCharAtIndex(start_index);
|
| + // For double click, we want to select one word so we look for whitespace
|
| + // boundaries. For triple click, we want the whole line.
|
| + if (cur == '\n' || (click_count == 2 && (cur == ' ' || cur == '\t')))
|
| + break;
|
| + } while (--start_index >= 0);
|
| + if (start_index)
|
| + start_index++;
|
| +
|
| + int end_index = char_index;
|
| + int total = pages_[page_index]->GetCharCount();
|
| + while (end_index++ <= total) {
|
| + base::char16 cur = pages_[page_index]->GetCharAtIndex(end_index);
|
| + if (cur == '\n' || (click_count == 2 && (cur == ' ' || cur == '\t')))
|
| + break;
|
| + }
|
| +
|
| + selection_.push_back(PDFiumRange(
|
| + pages_[page_index], start_index, end_index - start_index));
|
| +}
|
| +
|
| +bool PDFiumEngine::OnMouseUp(const pp::MouseInputEvent& event) {
|
| + if (event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_LEFT)
|
| + return false;
|
| +
|
| + int page_index = -1;
|
| + int char_index = -1;
|
| + GetCharIndex(event, &page_index, &char_index, NULL);
|
| + if (page_index != -1) {
|
| + double page_x, page_y;
|
| + pp::Point point = event.GetPosition();
|
| + DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y);
|
| + FORM_OnLButtonUp(
|
| + form_, pages_[page_index]->GetPage(), 0, page_x, page_y);
|
| + }
|
| +
|
| + if (!selecting_)
|
| + return false;
|
| +
|
| + selecting_ = false;
|
| + return true;
|
| +}
|
| +
|
| +bool PDFiumEngine::OnMouseMove(const pp::MouseInputEvent& event) {
|
| + int page_index = -1;
|
| + int char_index = -1;
|
| + PDFiumPage::Area area = GetCharIndex(event, &page_index, &char_index, NULL);
|
| + if (!selecting_) {
|
| + PP_CursorType_Dev cursor;
|
| + switch (area) {
|
| + case PDFiumPage::TEXT_AREA:
|
| + cursor = PP_CURSORTYPE_IBEAM;
|
| + break;
|
| + case PDFiumPage::WEBLINK_AREA:
|
| + case PDFiumPage::DOCLINK_AREA:
|
| + cursor = PP_CURSORTYPE_HAND;
|
| + break;
|
| + case PDFiumPage::NONSELECTABLE_AREA:
|
| + default:
|
| + cursor = PP_CURSORTYPE_POINTER;
|
| + break;
|
| + }
|
| +
|
| + if (page_index != -1) {
|
| + double page_x, page_y;
|
| + pp::Point point = event.GetPosition();
|
| + DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y);
|
| +
|
| + FORM_OnMouseMove(form_, pages_[page_index]->GetPage(), 0, page_x, page_y);
|
| + int control = FPDPage_HasFormFieldAtPoint(
|
| + form_, pages_[page_index]->GetPage(), page_x, page_y);
|
| + switch (control) {
|
| + case FPDF_FORMFIELD_PUSHBUTTON:
|
| + case FPDF_FORMFIELD_CHECKBOX:
|
| + case FPDF_FORMFIELD_RADIOBUTTON:
|
| + case FPDF_FORMFIELD_COMBOBOX:
|
| + case FPDF_FORMFIELD_LISTBOX:
|
| + cursor = PP_CURSORTYPE_HAND;
|
| + break;
|
| + case FPDF_FORMFIELD_TEXTFIELD:
|
| + cursor = PP_CURSORTYPE_IBEAM;
|
| + break;
|
| + default:
|
| + break;
|
| + }
|
| + }
|
| +
|
| + client_->UpdateCursor(cursor);
|
| + pp::Point point = event.GetPosition();
|
| + std::string url = GetLinkAtPosition(event.GetPosition());
|
| + if (url != link_under_cursor_) {
|
| + link_under_cursor_ = url;
|
| + pp::PDF::SetLinkUnderCursor(GetPluginInstance(), url.c_str());
|
| + }
|
| + // No need to swallow the event, since this might interfere with the
|
| + // scrollbars if the user is dragging them.
|
| + return false;
|
| + }
|
| +
|
| + // We're selecting but right now we're not over text, so don't change the
|
| + // current selection.
|
| + if (area != PDFiumPage::TEXT_AREA && area != PDFiumPage::WEBLINK_AREA &&
|
| + area != PDFiumPage::DOCLINK_AREA) {
|
| + return false;
|
| + }
|
| +
|
| + SelectionChangeInvalidator selection_invalidator(this);
|
| +
|
| + // Check if the user has descreased their selection area and we need to remove
|
| + // pages from selection_.
|
| + for (size_t i = 0; i < selection_.size(); ++i) {
|
| + if (selection_[i].page_index() == page_index) {
|
| + // There should be no other pages after this.
|
| + selection_.erase(selection_.begin() + i + 1, selection_.end());
|
| + break;
|
| + }
|
| + }
|
| +
|
| + if (selection_.size() == 0)
|
| + return false;
|
| +
|
| + int last = selection_.size() - 1;
|
| + if (selection_[last].page_index() == page_index) {
|
| + // Selecting within a page.
|
| + int count;
|
| + if (char_index >= selection_[last].char_index()) {
|
| + // Selecting forward.
|
| + count = char_index - selection_[last].char_index() + 1;
|
| + } else {
|
| + count = char_index - selection_[last].char_index() - 1;
|
| + }
|
| + selection_[last].SetCharCount(count);
|
| + } else if (selection_[last].page_index() < page_index) {
|
| + // Selecting into the next page.
|
| +
|
| + // First make sure that there are no gaps in selection, i.e. if mousedown on
|
| + // page one but we only get mousemove over page three, we want page two.
|
| + for (int i = selection_[last].page_index() + 1; i < page_index; ++i) {
|
| + selection_.push_back(PDFiumRange(pages_[i], 0,
|
| + pages_[i]->GetCharCount()));
|
| + }
|
| +
|
| + int count = pages_[selection_[last].page_index()]->GetCharCount();
|
| + selection_[last].SetCharCount(count - selection_[last].char_index());
|
| + selection_.push_back(PDFiumRange(pages_[page_index], 0, char_index));
|
| + } else {
|
| + // Selecting into the previous page.
|
| + selection_[last].SetCharCount(-selection_[last].char_index());
|
| +
|
| + // First make sure that there are no gaps in selection, i.e. if mousedown on
|
| + // page three but we only get mousemove over page one, we want page two.
|
| + for (int i = selection_[last].page_index() - 1; i > page_index; --i) {
|
| + selection_.push_back(PDFiumRange(pages_[i], 0,
|
| + pages_[i]->GetCharCount()));
|
| + }
|
| +
|
| + int count = pages_[page_index]->GetCharCount();
|
| + selection_.push_back(
|
| + PDFiumRange(pages_[page_index], count, count - char_index));
|
| + }
|
| +
|
| + return true;
|
| +}
|
| +
|
| +bool PDFiumEngine::OnKeyDown(const pp::KeyboardInputEvent& event) {
|
| + if (last_page_mouse_down_ == -1)
|
| + return false;
|
| +
|
| + bool rv = !!FORM_OnKeyDown(
|
| + form_, pages_[last_page_mouse_down_]->GetPage(),
|
| + event.GetKeyCode(), event.GetModifiers());
|
| +
|
| + if (event.GetKeyCode() == ui::VKEY_BACK ||
|
| + event.GetKeyCode() == ui::VKEY_ESCAPE) {
|
| + // Chrome doesn't send char events for backspace or escape keys, see
|
| + // PlatformKeyboardEventBuilder::isCharacterKey() and
|
| + // http://chrome-corpsvn.mtv.corp.google.com/viewvc?view=rev&root=chrome&revision=31805
|
| + // for more information. So just fake one since PDFium uses it.
|
| + std::string str;
|
| + str.push_back(event.GetKeyCode());
|
| + pp::KeyboardInputEvent synthesized(pp::KeyboardInputEvent(
|
| + client_->GetPluginInstance(),
|
| + PP_INPUTEVENT_TYPE_CHAR,
|
| + event.GetTimeStamp(),
|
| + event.GetModifiers(),
|
| + event.GetKeyCode(),
|
| + str));
|
| + OnChar(synthesized);
|
| + }
|
| +
|
| + return rv;
|
| +}
|
| +
|
| +bool PDFiumEngine::OnKeyUp(const pp::KeyboardInputEvent& event) {
|
| + if (last_page_mouse_down_ == -1)
|
| + return false;
|
| +
|
| + return !!FORM_OnKeyUp(
|
| + form_, pages_[last_page_mouse_down_]->GetPage(),
|
| + event.GetKeyCode(), event.GetModifiers());
|
| +}
|
| +
|
| +bool PDFiumEngine::OnChar(const pp::KeyboardInputEvent& event) {
|
| + if (last_page_mouse_down_ == -1)
|
| + return false;
|
| +
|
| + base::string16 str = base::UTF8ToUTF16(event.GetCharacterText().AsString());
|
| + return !!FORM_OnChar(
|
| + form_, pages_[last_page_mouse_down_]->GetPage(),
|
| + str[0],
|
| + event.GetModifiers());
|
| +}
|
| +
|
| +void PDFiumEngine::StartFind(const char* text, bool case_sensitive) {
|
| + // We can get a call to StartFind before we have any page information (i.e.
|
| + // before the first call to LoadDocument has happened). Handle this case.
|
| + if (pages_.empty())
|
| + return;
|
| +
|
| + bool first_search = false;
|
| + int character_to_start_searching_from = 0;
|
| + if (current_find_text_ != text) { // First time we search for this text.
|
| + first_search = true;
|
| + std::vector<PDFiumRange> old_selection = selection_;
|
| + StopFind();
|
| + current_find_text_ = text;
|
| +
|
| + if (old_selection.empty()) {
|
| + // Start searching from the beginning of the document.
|
| + next_page_to_search_ = 0;
|
| + last_page_to_search_ = pages_.size() - 1;
|
| + last_character_index_to_search_ = -1;
|
| + } else {
|
| + // There's a current selection, so start from it.
|
| + next_page_to_search_ = old_selection[0].page_index();
|
| + last_character_index_to_search_ = old_selection[0].char_index();
|
| + character_to_start_searching_from = old_selection[0].char_index();
|
| + last_page_to_search_ = next_page_to_search_;
|
| + }
|
| + }
|
| +
|
| + int current_page = next_page_to_search_;
|
| +
|
| + if (pages_[current_page]->available()) {
|
| + base::string16 str = base::UTF8ToUTF16(text);
|
| + // Don't use PDFium to search for now, since it doesn't support unicode text.
|
| + // Leave the code for now to avoid bit-rot, in case it's fixed later.
|
| + if (0) {
|
| + SearchUsingPDFium(
|
| + str, case_sensitive, first_search, character_to_start_searching_from,
|
| + current_page);
|
| + } else {
|
| + SearchUsingICU(
|
| + str, case_sensitive, first_search, character_to_start_searching_from,
|
| + current_page);
|
| + }
|
| +
|
| + if (!IsPageVisible(current_page))
|
| + pages_[current_page]->Unload();
|
| + }
|
| +
|
| + if (next_page_to_search_ != last_page_to_search_ ||
|
| + (first_search && last_character_index_to_search_ != -1)) {
|
| + ++next_page_to_search_;
|
| + }
|
| +
|
| + if (next_page_to_search_ == static_cast<int>(pages_.size()))
|
| + next_page_to_search_ = 0;
|
| + // If there's only one page in the document and we start searching midway,
|
| + // then we'll want to search the page one more time.
|
| + bool end_of_search =
|
| + next_page_to_search_ == last_page_to_search_ &&
|
| + // Only one page but didn't start midway.
|
| + ((pages_.size() == 1 && last_character_index_to_search_ == -1) ||
|
| + // Started midway, but only 1 page and we already looped around.
|
| + (pages_.size() == 1 && !first_search) ||
|
| + // Started midway, and we've just looped around.
|
| + (pages_.size() > 1 && current_page == next_page_to_search_));
|
| +
|
| + if (end_of_search) {
|
| + // Send the final notification.
|
| + client_->NotifyNumberOfFindResultsChanged(find_results_.size(), true);
|
| + } else {
|
| + pp::CompletionCallback callback =
|
| + find_factory_.NewCallback(&PDFiumEngine::ContinueFind);
|
| + pp::Module::Get()->core()->CallOnMainThread(
|
| + 0, callback, case_sensitive ? 1 : 0);
|
| + }
|
| +}
|
| +
|
| +void PDFiumEngine::SearchUsingPDFium(const base::string16& term,
|
| + bool case_sensitive,
|
| + bool first_search,
|
| + int character_to_start_searching_from,
|
| + int current_page) {
|
| + // Find all the matches in the current page.
|
| + unsigned long flags = case_sensitive ? FPDF_MATCHCASE : 0;
|
| + FPDF_SCHHANDLE find = FPDFText_FindStart(
|
| + pages_[current_page]->GetTextPage(),
|
| + reinterpret_cast<const unsigned short*>(term.c_str()),
|
| + flags, character_to_start_searching_from);
|
| +
|
| + // Note: since we search one page at a time, we don't find matches across
|
| + // page boundaries. We could do this manually ourself, but it seems low
|
| + // priority since Reader itself doesn't do it.
|
| + while (FPDFText_FindNext(find)) {
|
| + PDFiumRange result(pages_[current_page],
|
| + FPDFText_GetSchResultIndex(find),
|
| + FPDFText_GetSchCount(find));
|
| +
|
| + if (!first_search &&
|
| + last_character_index_to_search_ != -1 &&
|
| + result.page_index() == last_page_to_search_ &&
|
| + result.char_index() >= last_character_index_to_search_) {
|
| + break;
|
| + }
|
| +
|
| + AddFindResult(result);
|
| + }
|
| +
|
| + FPDFText_FindClose(find);
|
| +}
|
| +
|
| +void PDFiumEngine::SearchUsingICU(const base::string16& term,
|
| + bool case_sensitive,
|
| + bool first_search,
|
| + int character_to_start_searching_from,
|
| + int current_page) {
|
| + base::string16 page_text;
|
| + int text_length = pages_[current_page]->GetCharCount();
|
| + if (character_to_start_searching_from) {
|
| + text_length -= character_to_start_searching_from;
|
| + } else if (!first_search &&
|
| + last_character_index_to_search_ != -1 &&
|
| + current_page == last_page_to_search_) {
|
| + text_length = last_character_index_to_search_;
|
| + }
|
| + if (text_length <= 0)
|
| + return;
|
| + unsigned short* data =
|
| + reinterpret_cast<unsigned short*>(WriteInto(&page_text, text_length + 1));
|
| + FPDFText_GetText(pages_[current_page]->GetTextPage(),
|
| + character_to_start_searching_from,
|
| + text_length,
|
| + data);
|
| + std::vector<PDFEngine::Client::SearchStringResult> results;
|
| + client_->SearchString(
|
| + page_text.c_str(), term.c_str(), case_sensitive, &results);
|
| + for (size_t i = 0; i < results.size(); ++i) {
|
| + // Need to map the indexes from the page text, which may have generated
|
| + // characters like space etc, to character indices from the page.
|
| + int temp_start = results[i].start_index + character_to_start_searching_from;
|
| + int start = FPDFText_GetCharIndexFromTextIndex(
|
| + pages_[current_page]->GetTextPage(), temp_start);
|
| + int end = FPDFText_GetCharIndexFromTextIndex(
|
| + pages_[current_page]->GetTextPage(),
|
| + temp_start + results[i].length);
|
| + AddFindResult(PDFiumRange(pages_[current_page], start, end - start));
|
| + }
|
| +}
|
| +
|
| +void PDFiumEngine::AddFindResult(const PDFiumRange& result) {
|
| + // Figure out where to insert the new location, since we could have
|
| + // started searching midway and now we wrapped.
|
| + size_t i;
|
| + int page_index = result.page_index();
|
| + int char_index = result.char_index();
|
| + for (i = 0; i < find_results_.size(); ++i) {
|
| + if (find_results_[i].page_index() > page_index ||
|
| + (find_results_[i].page_index() == page_index &&
|
| + find_results_[i].char_index() > char_index)) {
|
| + break;
|
| + }
|
| + }
|
| + find_results_.insert(find_results_.begin() + i, result);
|
| + UpdateTickMarks();
|
| +
|
| + if (current_find_index_ == -1) {
|
| + // Select the first match.
|
| + SelectFindResult(true);
|
| + } else if (static_cast<int>(i) <= current_find_index_) {
|
| + // Update the current match index
|
| + current_find_index_++;
|
| + client_->NotifySelectedFindResultChanged(current_find_index_);
|
| + }
|
| + client_->NotifyNumberOfFindResultsChanged(find_results_.size(), false);
|
| +}
|
| +
|
| +bool PDFiumEngine::SelectFindResult(bool forward) {
|
| + if (find_results_.empty()) {
|
| + NOTREACHED();
|
| + return false;
|
| + }
|
| +
|
| + SelectionChangeInvalidator selection_invalidator(this);
|
| +
|
| + // Move back/forward through the search locations we previously found.
|
| + if (forward) {
|
| + if (++current_find_index_ == static_cast<int>(find_results_.size()))
|
| + current_find_index_ = 0;
|
| + } else {
|
| + if (--current_find_index_ < 0) {
|
| + current_find_index_ = find_results_.size() - 1;
|
| + }
|
| + }
|
| +
|
| + // Update the selection before telling the client to scroll, since it could
|
| + // paint then.
|
| + selection_.clear();
|
| + selection_.push_back(find_results_[current_find_index_]);
|
| +
|
| + // If the result is not in view, scroll to it.
|
| + size_t i;
|
| + pp::Rect bounding_rect;
|
| + pp::Rect visible_rect = GetVisibleRect();
|
| + // Use zoom of 1.0 since visible_rect is without zoom.
|
| + std::vector<pp::Rect> rects = find_results_[current_find_index_].
|
| + GetScreenRects(pp::Point(), 1.0, current_rotation_);
|
| + for (i = 0; i < rects.size(); ++i)
|
| + bounding_rect = bounding_rect.Union(rects[i]);
|
| + if (!visible_rect.Contains(bounding_rect)) {
|
| + pp::Point center = bounding_rect.CenterPoint();
|
| + // Make the page centered.
|
| + int new_y = static_cast<int>(center.y() * current_zoom_) -
|
| + static_cast<int>(visible_rect.height() * current_zoom_ / 2);
|
| + if (new_y < 0)
|
| + new_y = 0;
|
| + client_->ScrollToY(new_y);
|
| +
|
| + // Only move horizontally if it's not visible.
|
| + if (center.x() < visible_rect.x() || center.x() > visible_rect.right()) {
|
| + int new_x = static_cast<int>(center.x() * current_zoom_) -
|
| + static_cast<int>(visible_rect.width() * current_zoom_ / 2);
|
| + if (new_x < 0)
|
| + new_x = 0;
|
| + client_->ScrollToX(new_x);
|
| + }
|
| + }
|
| +
|
| + client_->NotifySelectedFindResultChanged(current_find_index_);
|
| +
|
| + return true;
|
| +}
|
| +
|
| +void PDFiumEngine::StopFind() {
|
| + SelectionChangeInvalidator selection_invalidator(this);
|
| +
|
| + selection_.clear();
|
| + selecting_ = false;
|
| + find_results_.clear();
|
| + next_page_to_search_ = -1;
|
| + last_page_to_search_ = -1;
|
| + last_character_index_to_search_ = -1;
|
| + current_find_index_ = -1;
|
| + current_find_text_.clear();
|
| + UpdateTickMarks();
|
| + find_factory_.CancelAll();
|
| +}
|
| +
|
| +void PDFiumEngine::UpdateTickMarks() {
|
| + std::vector<pp::Rect> tickmarks;
|
| + for (size_t i = 0; i < find_results_.size(); ++i) {
|
| + pp::Rect rect;
|
| + // Always use an origin of 0,0 since scroll positions don't affect tickmark.
|
| + std::vector<pp::Rect> rects = find_results_[i].GetScreenRects(
|
| + pp::Point(0, 0), current_zoom_, current_rotation_);
|
| + for (size_t j = 0; j < rects.size(); ++j)
|
| + rect = rect.Union(rects[j]);
|
| + tickmarks.push_back(rect);
|
| + }
|
| +
|
| + client_->UpdateTickMarks(tickmarks);
|
| +}
|
| +
|
| +void PDFiumEngine::ZoomUpdated(double new_zoom_level) {
|
| + CancelPaints();
|
| +
|
| + current_zoom_ = new_zoom_level;
|
| +
|
| + CalculateVisiblePages();
|
| + UpdateTickMarks();
|
| +}
|
| +
|
| +void PDFiumEngine::RotateClockwise() {
|
| + current_rotation_ = (current_rotation_ + 1) % 4;
|
| + InvalidateAllPages();
|
| +}
|
| +
|
| +void PDFiumEngine::RotateCounterclockwise() {
|
| + current_rotation_ = (current_rotation_ - 1) % 4;
|
| + InvalidateAllPages();
|
| +}
|
| +
|
| +void PDFiumEngine::InvalidateAllPages() {
|
| + selection_.clear();
|
| + find_results_.clear();
|
| +
|
| + CancelPaints();
|
| + LoadPageInfo(true);
|
| + UpdateTickMarks();
|
| + client_->Invalidate(pp::Rect(plugin_size_));
|
| +}
|
| +
|
| +std::string PDFiumEngine::GetSelectedText() {
|
| + base::string16 result;
|
| + for (size_t i = 0; i < selection_.size(); ++i) {
|
| + if (i > 0 &&
|
| + selection_[i - 1].page_index() > selection_[i].page_index()) {
|
| + result = selection_[i].GetText() + result;
|
| + } else {
|
| + result.append(selection_[i].GetText());
|
| + }
|
| + }
|
| +
|
| + return base::UTF16ToUTF8(result);
|
| +}
|
| +
|
| +std::string PDFiumEngine::GetLinkAtPosition(const pp::Point& point) {
|
| + int temp;
|
| + PDFiumPage::LinkTarget target;
|
| + PDFiumPage::Area area = GetCharIndex(point, &temp, &temp, &target);
|
| + if (area == PDFiumPage::WEBLINK_AREA)
|
| + return target.url;
|
| + return std::string();
|
| +}
|
| +
|
| +bool PDFiumEngine::IsSelecting() {
|
| + return selecting_;
|
| +}
|
| +
|
| +bool PDFiumEngine::HasPermission(DocumentPermission permission) const {
|
| + switch (permission) {
|
| + case PERMISSION_COPY:
|
| + return (permissions_ & kPDFPermissionCopyMask) != 0;
|
| + case PERMISSION_COPY_ACCESSIBLE:
|
| + return (permissions_ & kPDFPermissionCopyAccessibleMask) != 0;
|
| + case PERMISSION_PRINT_LOW_QUALITY:
|
| + return (permissions_ & kPDFPermissionPrintLowQualityMask) != 0;
|
| + case PERMISSION_PRINT_HIGH_QUALITY:
|
| + return (permissions_ & kPDFPermissionPrintLowQualityMask) != 0 &&
|
| + (permissions_ & kPDFPermissionPrintHighQualityMask) != 0;
|
| + default:
|
| + return true;
|
| + };
|
| +}
|
| +
|
| +void PDFiumEngine::SelectAll() {
|
| + SelectionChangeInvalidator selection_invalidator(this);
|
| +
|
| + selection_.clear();
|
| + for (size_t i = 0; i < pages_.size(); ++i)
|
| + if (pages_[i]->available()) {
|
| + selection_.push_back(PDFiumRange(pages_[i], 0,
|
| + pages_[i]->GetCharCount()));
|
| + }
|
| +}
|
| +
|
| +int PDFiumEngine::GetNumberOfPages() {
|
| + return pages_.size();
|
| +}
|
| +
|
| +int PDFiumEngine::GetNamedDestinationPage(const std::string& destination) {
|
| + // Look for the destination.
|
| + FPDF_DEST dest = FPDF_GetNamedDestByName(doc_, destination.c_str());
|
| + if (!dest) {
|
| + // Look for a bookmark with the same name.
|
| + base::string16 destination_wide = base::UTF8ToUTF16(destination);
|
| + FPDF_WIDESTRING destination_pdf_wide =
|
| + reinterpret_cast<FPDF_WIDESTRING>(destination_wide.c_str());
|
| + FPDF_BOOKMARK bookmark = FPDFBookmark_Find(doc_, destination_pdf_wide);
|
| + if (!bookmark)
|
| + return -1;
|
| + dest = FPDFBookmark_GetDest(doc_, bookmark);
|
| + }
|
| + return dest ? FPDFDest_GetPageIndex(doc_, dest) : -1;
|
| +}
|
| +
|
| +int PDFiumEngine::GetFirstVisiblePage() {
|
| + CalculateVisiblePages();
|
| + return first_visible_page_;
|
| +}
|
| +
|
| +int PDFiumEngine::GetMostVisiblePage() {
|
| + CalculateVisiblePages();
|
| + return most_visible_page_;
|
| +}
|
| +
|
| +pp::Rect PDFiumEngine::GetPageRect(int index) {
|
| + pp::Rect rc(pages_[index]->rect());
|
| + rc.Inset(-kPageShadowLeft, -kPageShadowTop,
|
| + -kPageShadowRight, -kPageShadowBottom);
|
| + return rc;
|
| +}
|
| +
|
| +pp::Rect PDFiumEngine::GetPageContentsRect(int index) {
|
| + return GetScreenRect(pages_[index]->rect());
|
| +}
|
| +
|
| +void PDFiumEngine::PaintThumbnail(pp::ImageData* image_data, int index) {
|
| + FPDF_BITMAP bitmap = FPDFBitmap_CreateEx(
|
| + image_data->size().width(), image_data->size().height(),
|
| + FPDFBitmap_BGRx, image_data->data(), image_data->stride());
|
| +
|
| + if (pages_[index]->available()) {
|
| + FPDFBitmap_FillRect(
|
| + bitmap, 0, 0, image_data->size().width(), image_data->size().height(),
|
| + 255, 255, 255, 255);
|
| +
|
| + FPDF_RenderPageBitmap(
|
| + bitmap, pages_[index]->GetPage(), 0, 0, image_data->size().width(),
|
| + image_data->size().height(), 0, GetRenderingFlags());
|
| + } else {
|
| + FPDFBitmap_FillRect(
|
| + bitmap, 0, 0, image_data->size().width(), image_data->size().height(),
|
| + kPendingPageColorR, kPendingPageColorG, kPendingPageColorB,
|
| + kPendingPageColorA);
|
| + }
|
| +
|
| + FPDFBitmap_Destroy(bitmap);
|
| +}
|
| +
|
| +void PDFiumEngine::SetGrayscale(bool grayscale) {
|
| + render_grayscale_ = grayscale;
|
| +}
|
| +
|
| +void PDFiumEngine::OnCallback(int id) {
|
| + if (!timers_.count(id))
|
| + return;
|
| +
|
| + timers_[id].second(id);
|
| + if (timers_.count(id)) // The callback might delete the timer.
|
| + client_->ScheduleCallback(id, timers_[id].first);
|
| +}
|
| +
|
| +std::string PDFiumEngine::GetPageAsJSON(int index) {
|
| + if (!(HasPermission(PERMISSION_COPY) ||
|
| + HasPermission(PERMISSION_COPY_ACCESSIBLE))) {
|
| + return "{}";
|
| + }
|
| +
|
| + if (index < 0 || static_cast<size_t>(index) > pages_.size() - 1)
|
| + return "{}";
|
| +
|
| + scoped_ptr<base::Value> node(
|
| + pages_[index]->GetAccessibleContentAsValue(current_rotation_));
|
| + std::string page_json;
|
| + base::JSONWriter::Write(node.get(), &page_json);
|
| + return page_json;
|
| +}
|
| +
|
| +bool PDFiumEngine::GetPrintScaling() {
|
| + return !!FPDF_VIEWERREF_GetPrintScaling(doc_);
|
| +}
|
| +
|
| +void PDFiumEngine::AppendBlankPages(int num_pages) {
|
| + DCHECK(num_pages != 0);
|
| +
|
| + if (!doc_)
|
| + return;
|
| +
|
| + selection_.clear();
|
| + pending_pages_.clear();
|
| +
|
| + // Delete all pages except the first one.
|
| + while (pages_.size() > 1) {
|
| + delete pages_.back();
|
| + pages_.pop_back();
|
| + FPDFPage_Delete(doc_, pages_.size());
|
| + }
|
| +
|
| + // Calculate document size and all page sizes.
|
| + std::vector<pp::Rect> page_rects;
|
| + pp::Size page_size = GetPageSize(0);
|
| + page_size.Enlarge(kPageShadowLeft + kPageShadowRight,
|
| + kPageShadowTop + kPageShadowBottom);
|
| + pp::Size old_document_size = document_size_;
|
| + document_size_ = pp::Size(page_size.width(), 0);
|
| + for (int i = 0; i < num_pages; ++i) {
|
| + if (i != 0) {
|
| + // Add space for horizontal separator.
|
| + document_size_.Enlarge(0, kPageSeparatorThickness);
|
| + }
|
| +
|
| + pp::Rect rect(pp::Point(0, document_size_.height()), page_size);
|
| + page_rects.push_back(rect);
|
| +
|
| + document_size_.Enlarge(0, page_size.height());
|
| + }
|
| +
|
| + // Create blank pages.
|
| + for (int i = 1; i < num_pages; ++i) {
|
| + pp::Rect page_rect(page_rects[i]);
|
| + page_rect.Inset(kPageShadowLeft, kPageShadowTop,
|
| + kPageShadowRight, kPageShadowBottom);
|
| + double width_in_points =
|
| + page_rect.width() * kPointsPerInch / kPixelsPerInch;
|
| + double height_in_points =
|
| + page_rect.height() * kPointsPerInch / kPixelsPerInch;
|
| + FPDFPage_New(doc_, i, width_in_points, height_in_points);
|
| + pages_.push_back(new PDFiumPage(this, i, page_rect, true));
|
| + }
|
| +
|
| + CalculateVisiblePages();
|
| + if (document_size_ != old_document_size)
|
| + client_->DocumentSizeUpdated(document_size_);
|
| +}
|
| +
|
| +void PDFiumEngine::LoadDocument() {
|
| + // Check if the document is ready for loading. If it isn't just bail for now,
|
| + // we will call LoadDocument() again later.
|
| + if (!doc_ && !doc_loader_.IsDocumentComplete() &&
|
| + !FPDFAvail_IsDocAvail(fpdf_availability_, &download_hints_)) {
|
| + return;
|
| + }
|
| +
|
| + // If we're in the middle of getting a password, just return. We will retry
|
| + // loading the document after we get the password anyway.
|
| + if (getting_password_)
|
| + return;
|
| +
|
| + ScopedUnsupportedFeature scoped_unsupported_feature(this);
|
| + bool needs_password = false;
|
| + if (TryLoadingDoc(false, std::string(), &needs_password)) {
|
| + ContinueLoadingDocument(false, std::string());
|
| + return;
|
| + }
|
| + if (needs_password)
|
| + GetPasswordAndLoad();
|
| + else
|
| + client_->DocumentLoadFailed();
|
| +}
|
| +
|
| +bool PDFiumEngine::TryLoadingDoc(bool with_password,
|
| + const std::string& password,
|
| + bool* needs_password) {
|
| + *needs_password = false;
|
| + if (doc_)
|
| + return true;
|
| +
|
| + const char* password_cstr = NULL;
|
| + if (with_password) {
|
| + password_cstr = password.c_str();
|
| + password_tries_remaining_--;
|
| + }
|
| + if (doc_loader_.IsDocumentComplete())
|
| + doc_ = FPDF_LoadCustomDocument(&file_access_, password_cstr);
|
| + else
|
| + doc_ = FPDFAvail_GetDocument(fpdf_availability_, password_cstr);
|
| +
|
| + if (!doc_ && FPDF_GetLastError() == FPDF_ERR_PASSWORD)
|
| + *needs_password = true;
|
| +
|
| + return doc_ != NULL;
|
| +}
|
| +
|
| +void PDFiumEngine::GetPasswordAndLoad() {
|
| + getting_password_ = true;
|
| + DCHECK(!doc_ && FPDF_GetLastError() == FPDF_ERR_PASSWORD);
|
| + client_->GetDocumentPassword(password_factory_.NewCallbackWithOutput(
|
| + &PDFiumEngine::OnGetPasswordComplete));
|
| +}
|
| +
|
| +void PDFiumEngine::OnGetPasswordComplete(int32_t result,
|
| + const pp::Var& password) {
|
| + getting_password_ = false;
|
| +
|
| + bool password_given = false;
|
| + std::string password_text;
|
| + if (result == PP_OK && password.is_string()) {
|
| + password_text = password.AsString();
|
| + if (!password_text.empty())
|
| + password_given = true;
|
| + }
|
| + ContinueLoadingDocument(password_given, password_text);
|
| +}
|
| +
|
| +void PDFiumEngine::ContinueLoadingDocument(
|
| + bool has_password,
|
| + const std::string& password) {
|
| + ScopedUnsupportedFeature scoped_unsupported_feature(this);
|
| +
|
| + bool needs_password = false;
|
| + bool loaded = TryLoadingDoc(has_password, password, &needs_password);
|
| + bool password_incorrect = !loaded && has_password && needs_password;
|
| + if (password_incorrect && password_tries_remaining_ > 0) {
|
| + GetPasswordAndLoad();
|
| + return;
|
| + }
|
| +
|
| + if (!doc_) {
|
| + client_->DocumentLoadFailed();
|
| + return;
|
| + }
|
| +
|
| + if (FPDFDoc_GetPageMode(doc_) == PAGEMODE_USEOUTLINES)
|
| + client_->DocumentHasUnsupportedFeature("Bookmarks");
|
| +
|
| + permissions_ = FPDF_GetDocPermissions(doc_);
|
| +
|
| + if (!form_) {
|
| + // Only returns 0 when data isn't available. If form data is downloaded, or
|
| + // if this isn't a form, returns positive values.
|
| + if (!doc_loader_.IsDocumentComplete() &&
|
| + !FPDFAvail_IsFormAvail(fpdf_availability_, &download_hints_)) {
|
| + return;
|
| + }
|
| +
|
| + form_ = FPDFDOC_InitFormFillEnviroument(
|
| + doc_, static_cast<FPDF_FORMFILLINFO*>(this));
|
| + FPDF_SetFormFieldHighlightColor(form_, 0, kFormHighlightColor);
|
| + FPDF_SetFormFieldHighlightAlpha(form_, kFormHighlightAlpha);
|
| + }
|
| +
|
| + if (!doc_loader_.IsDocumentComplete()) {
|
| + // Check if the first page is available. In a linearized PDF, that is not
|
| + // always page 0. Doing this gives us the default page size, since when the
|
| + // document is available, the first page is available as well.
|
| + CheckPageAvailable(FPDFAvail_GetFirstPageNum(doc_), &pending_pages_);
|
| + }
|
| +
|
| + LoadPageInfo(false);
|
| +
|
| + if (doc_loader_.IsDocumentComplete())
|
| + FinishLoadingDocument();
|
| +}
|
| +
|
| +void PDFiumEngine::LoadPageInfo(bool reload) {
|
| + pending_pages_.clear();
|
| + pp::Size old_document_size = document_size_;
|
| + document_size_ = pp::Size();
|
| + std::vector<pp::Rect> page_rects;
|
| + int page_count = FPDF_GetPageCount(doc_);
|
| + bool doc_complete = doc_loader_.IsDocumentComplete();
|
| + for (int i = 0; i < page_count; ++i) {
|
| + if (i != 0) {
|
| + // Add space for horizontal separator.
|
| + document_size_.Enlarge(0, kPageSeparatorThickness);
|
| + }
|
| +
|
| + // Get page availability. If reload==false, and document is not loaded yet
|
| + // (we are using async loading) - mark all pages as unavailable.
|
| + // If reload==true (we have document constructed already), get page
|
| + // availability flag from already existing PDFiumPage class.
|
| + bool page_available = reload ? pages_[i]->available() : doc_complete;
|
| +
|
| + pp::Size size = page_available ? GetPageSize(i) : default_page_size_;
|
| + size.Enlarge(kPageShadowLeft + kPageShadowRight,
|
| + kPageShadowTop + kPageShadowBottom);
|
| + pp::Rect rect(pp::Point(0, document_size_.height()), size);
|
| + page_rects.push_back(rect);
|
| +
|
| + if (size.width() > document_size_.width())
|
| + document_size_.set_width(size.width());
|
| +
|
| + document_size_.Enlarge(0, size.height());
|
| + }
|
| +
|
| + for (int i = 0; i < page_count; ++i) {
|
| + // Center pages relative to the entire document.
|
| + page_rects[i].set_x((document_size_.width() - page_rects[i].width()) / 2);
|
| + pp::Rect page_rect(page_rects[i]);
|
| + page_rect.Inset(kPageShadowLeft, kPageShadowTop,
|
| + kPageShadowRight, kPageShadowBottom);
|
| + if (reload) {
|
| + pages_[i]->set_rect(page_rect);
|
| + } else {
|
| + pages_.push_back(new PDFiumPage(this, i, page_rect, doc_complete));
|
| + }
|
| + }
|
| +
|
| + CalculateVisiblePages();
|
| + if (document_size_ != old_document_size)
|
| + client_->DocumentSizeUpdated(document_size_);
|
| +}
|
| +
|
| +void PDFiumEngine::CalculateVisiblePages() {
|
| + // Clear pending requests queue, since it may contain requests to the pages
|
| + // that are already invisible (after scrolling for example).
|
| + pending_pages_.clear();
|
| + doc_loader_.ClearPendingRequests();
|
| +
|
| + visible_pages_.clear();
|
| + pp::Rect visible_rect(plugin_size_);
|
| + for (size_t i = 0; i < pages_.size(); ++i) {
|
| + // Check an entire PageScreenRect, since we might need to repaint side
|
| + // borders and shadows even if the page itself is not visible.
|
| + // For example, when user use pdf with different page sizes and zoomed in
|
| + // outside page area.
|
| + if (visible_rect.Intersects(GetPageScreenRect(i))) {
|
| + visible_pages_.push_back(i);
|
| + CheckPageAvailable(i, &pending_pages_);
|
| + } else {
|
| + // Need to unload pages when we're not using them, since some PDFs use a
|
| + // lot of memory. See http://crbug.com/48791
|
| + if (defer_page_unload_) {
|
| + deferred_page_unloads_.push_back(i);
|
| + } else {
|
| + pages_[i]->Unload();
|
| + }
|
| +
|
| + // If the last mouse down was on a page that's no longer visible, reset
|
| + // that variable so that we don't send keyboard events to it (the focus
|
| + // will be lost when the page is first closed anyways).
|
| + if (static_cast<int>(i) == last_page_mouse_down_)
|
| + last_page_mouse_down_ = -1;
|
| + }
|
| + }
|
| +
|
| + // Any pending highlighting of form fields will be invalid since these are in
|
| + // screen coordinates.
|
| + form_highlights_.clear();
|
| +
|
| + if (visible_pages_.size() == 0)
|
| + first_visible_page_ = -1;
|
| + else
|
| + first_visible_page_ = visible_pages_.front();
|
| +
|
| + int most_visible_page = first_visible_page_;
|
| + // Check if the next page is more visible than the first one.
|
| + if (most_visible_page != -1 &&
|
| + pages_.size() > 0 &&
|
| + most_visible_page < static_cast<int>(pages_.size()) - 1) {
|
| + pp::Rect rc_first =
|
| + visible_rect.Intersect(GetPageScreenRect(most_visible_page));
|
| + pp::Rect rc_next =
|
| + visible_rect.Intersect(GetPageScreenRect(most_visible_page + 1));
|
| + if (rc_next.height() > rc_first.height())
|
| + most_visible_page++;
|
| + }
|
| +
|
| + SetCurrentPage(most_visible_page);
|
| +}
|
| +
|
| +bool PDFiumEngine::IsPageVisible(int index) const {
|
| + for (size_t i = 0; i < visible_pages_.size(); ++i) {
|
| + if (visible_pages_[i] == index)
|
| + return true;
|
| + }
|
| +
|
| + return false;
|
| +}
|
| +
|
| +bool PDFiumEngine::CheckPageAvailable(int index, std::vector<int>* pending) {
|
| + if (!doc_ || !form_)
|
| + return false;
|
| +
|
| + if (static_cast<int>(pages_.size()) > index && pages_[index]->available())
|
| + return true;
|
| +
|
| + if (!FPDFAvail_IsPageAvail(fpdf_availability_, index, &download_hints_)) {
|
| + size_t j;
|
| + for (j = 0; j < pending->size(); ++j) {
|
| + if ((*pending)[j] == index)
|
| + break;
|
| + }
|
| +
|
| + if (j == pending->size())
|
| + pending->push_back(index);
|
| + return false;
|
| + }
|
| +
|
| + if (static_cast<int>(pages_.size()) > index)
|
| + pages_[index]->set_available(true);
|
| + if (!default_page_size_.GetArea())
|
| + default_page_size_ = GetPageSize(index);
|
| + return true;
|
| +}
|
| +
|
| +pp::Size PDFiumEngine::GetPageSize(int index) {
|
| + pp::Size size;
|
| + double width_in_points = 0;
|
| + double height_in_points = 0;
|
| + int rv = FPDF_GetPageSizeByIndex(
|
| + doc_, index, &width_in_points, &height_in_points);
|
| +
|
| + if (rv) {
|
| + int width_in_pixels = static_cast<int>(
|
| + width_in_points * kPixelsPerInch / kPointsPerInch);
|
| + int height_in_pixels = static_cast<int>(
|
| + height_in_points * kPixelsPerInch / kPointsPerInch);
|
| + if (current_rotation_ % 2 == 1)
|
| + std::swap(width_in_pixels, height_in_pixels);
|
| + size = pp::Size(width_in_pixels, height_in_pixels);
|
| + }
|
| + return size;
|
| +}
|
| +
|
| +int PDFiumEngine::StartPaint(int page_index, const pp::Rect& dirty) {
|
| + // For the first time we hit paint, do nothing and just record the paint for
|
| + // the next callback. This keeps the UI responsive in case the user is doing
|
| + // a lot of scrolling.
|
| + ProgressivePaint progressive;
|
| + progressive.rect = dirty;
|
| + progressive.page_index = page_index;
|
| + progressive.bitmap = NULL;
|
| + progressive.painted_ = false;
|
| + progressive_paints_.push_back(progressive);
|
| + return progressive_paints_.size() - 1;
|
| +}
|
| +
|
| +bool PDFiumEngine::ContinuePaint(int progressive_index,
|
| + pp::ImageData* image_data) {
|
| +#if defined(OS_LINUX)
|
| + g_last_instance_id = client_->GetPluginInstance()->pp_instance();
|
| +#endif
|
| +
|
| + int rv;
|
| + int page_index = progressive_paints_[progressive_index].page_index;
|
| + last_progressive_start_time_ = base::Time::Now();
|
| + if (progressive_paints_[progressive_index].bitmap) {
|
| + rv = FPDF_RenderPage_Continue(
|
| + pages_[page_index]->GetPage(), static_cast<IFSDK_PAUSE*>(this));
|
| + } else {
|
| + pp::Rect dirty = progressive_paints_[progressive_index].rect;
|
| + progressive_paints_[progressive_index].bitmap = CreateBitmap(dirty,
|
| + image_data);
|
| + int start_x, start_y, size_x, size_y;
|
| + GetPDFiumRect(
|
| + page_index, dirty, &start_x, &start_y, &size_x, &size_y);
|
| + FPDFBitmap_FillRect(
|
| + progressive_paints_[progressive_index].bitmap, start_x, start_y, size_x,
|
| + size_y, 255, 255, 255, 255);
|
| + rv = FPDF_RenderPageBitmap_Start(
|
| + progressive_paints_[progressive_index].bitmap,
|
| + pages_[page_index]->GetPage(), start_x, start_y, size_x, size_y,
|
| + current_rotation_,
|
| + GetRenderingFlags(), static_cast<IFSDK_PAUSE*>(this));
|
| + }
|
| + return rv != FPDF_RENDER_TOBECOUNTINUED;
|
| +}
|
| +
|
| +void PDFiumEngine::FinishPaint(int progressive_index,
|
| + pp::ImageData* image_data) {
|
| + int page_index = progressive_paints_[progressive_index].page_index;
|
| + pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect;
|
| + FPDF_BITMAP bitmap = progressive_paints_[progressive_index].bitmap;
|
| + int start_x, start_y, size_x, size_y;
|
| + GetPDFiumRect(
|
| + page_index, dirty_in_screen, &start_x, &start_y, &size_x, &size_y);
|
| +
|
| + // Draw the forms.
|
| + FPDF_FFLDraw(
|
| + form_, bitmap, pages_[page_index]->GetPage(), start_x, start_y, size_x,
|
| + size_y, current_rotation_, GetRenderingFlags());
|
| +
|
| + FillPageSides(progressive_index);
|
| +
|
| + // Paint the page shadows.
|
| + PaintPageShadow(progressive_index, image_data);
|
| +
|
| + DrawSelections(progressive_index, image_data);
|
| +
|
| + FPDF_RenderPage_Close(pages_[page_index]->GetPage());
|
| + FPDFBitmap_Destroy(bitmap);
|
| + progressive_paints_.erase(progressive_paints_.begin() + progressive_index);
|
| +
|
| + client_->DocumentPaintOccurred();
|
| +}
|
| +
|
| +void PDFiumEngine::CancelPaints() {
|
| + for (size_t i = 0; i < progressive_paints_.size(); ++i) {
|
| + FPDF_RenderPage_Close(pages_[progressive_paints_[i].page_index]->GetPage());
|
| + FPDFBitmap_Destroy(progressive_paints_[i].bitmap);
|
| + }
|
| + progressive_paints_.clear();
|
| +}
|
| +
|
| +void PDFiumEngine::FillPageSides(int progressive_index) {
|
| + int page_index = progressive_paints_[progressive_index].page_index;
|
| + pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect;
|
| + FPDF_BITMAP bitmap = progressive_paints_[progressive_index].bitmap;
|
| +
|
| + pp::Rect page_rect = pages_[page_index]->rect();
|
| + if (page_rect.x() > 0) {
|
| + pp::Rect left(0,
|
| + page_rect.y() - kPageShadowTop,
|
| + page_rect.x() - kPageShadowLeft,
|
| + page_rect.height() + kPageShadowTop +
|
| + kPageShadowBottom + kPageSeparatorThickness);
|
| + left = GetScreenRect(left).Intersect(dirty_in_screen);
|
| +
|
| + FPDFBitmap_FillRect(
|
| + bitmap, left.x() - dirty_in_screen.x(),
|
| + left.y() - dirty_in_screen.y(), left.width(), left.height(),
|
| + kBackgroundColorR, kBackgroundColorG, kBackgroundColorB,
|
| + kBackgroundColorA);
|
| + }
|
| +
|
| + if (page_rect.right() < document_size_.width()) {
|
| + pp::Rect right(page_rect.right() + kPageShadowRight,
|
| + page_rect.y() - kPageShadowTop,
|
| + document_size_.width() - page_rect.right() -
|
| + kPageShadowRight,
|
| + page_rect.height() + kPageShadowTop +
|
| + kPageShadowBottom + kPageSeparatorThickness);
|
| + right = GetScreenRect(right).Intersect(dirty_in_screen);
|
| +
|
| + FPDFBitmap_FillRect(
|
| + bitmap, right.x() - dirty_in_screen.x(),
|
| + right.y() - dirty_in_screen.y(), right.width(), right.height(),
|
| + kBackgroundColorR, kBackgroundColorG, kBackgroundColorB,
|
| + kBackgroundColorA);
|
| + }
|
| +
|
| + // Paint separator.
|
| + pp::Rect bottom(page_rect.x() - kPageShadowLeft,
|
| + page_rect.bottom() + kPageShadowBottom,
|
| + page_rect.width() + kPageShadowLeft + kPageShadowRight,
|
| + kPageSeparatorThickness);
|
| + bottom = GetScreenRect(bottom).Intersect(dirty_in_screen);
|
| +
|
| + FPDFBitmap_FillRect(
|
| + bitmap, bottom.x() - dirty_in_screen.x(),
|
| + bottom.y() - dirty_in_screen.y(), bottom.width(), bottom.height(),
|
| + kBackgroundColorR, kBackgroundColorG, kBackgroundColorB,
|
| + kBackgroundColorA);
|
| +}
|
| +
|
| +void PDFiumEngine::PaintPageShadow(int progressive_index,
|
| + pp::ImageData* image_data) {
|
| + int page_index = progressive_paints_[progressive_index].page_index;
|
| + pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect;
|
| + pp::Rect page_rect = pages_[page_index]->rect();
|
| + pp::Rect shadow_rect(page_rect);
|
| + shadow_rect.Inset(-kPageShadowLeft, -kPageShadowTop,
|
| + -kPageShadowRight, -kPageShadowBottom);
|
| +
|
| + // Due to the rounding errors of the GetScreenRect it is possible to get
|
| + // different size shadows on the left and right sides even they are defined
|
| + // the same. To fix this issue let's calculate shadow rect and then shrink
|
| + // it by the size of the shadows.
|
| + shadow_rect = GetScreenRect(shadow_rect);
|
| + page_rect = shadow_rect;
|
| +
|
| + page_rect.Inset(static_cast<int>(ceil(kPageShadowLeft * current_zoom_)),
|
| + static_cast<int>(ceil(kPageShadowTop * current_zoom_)),
|
| + static_cast<int>(ceil(kPageShadowRight * current_zoom_)),
|
| + static_cast<int>(ceil(kPageShadowBottom * current_zoom_)));
|
| +
|
| + DrawPageShadow(page_rect, shadow_rect, dirty_in_screen, image_data);
|
| +}
|
| +
|
| +void PDFiumEngine::DrawSelections(int progressive_index,
|
| + pp::ImageData* image_data) {
|
| + int page_index = progressive_paints_[progressive_index].page_index;
|
| + pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect;
|
| +
|
| + void* region = NULL;
|
| + int stride;
|
| + GetRegion(dirty_in_screen.point(), image_data, ®ion, &stride);
|
| +
|
| + std::vector<pp::Rect> highlighted_rects;
|
| + pp::Rect visible_rect = GetVisibleRect();
|
| + for (size_t k = 0; k < selection_.size(); ++k) {
|
| + if (selection_[k].page_index() != page_index)
|
| + continue;
|
| + std::vector<pp::Rect> rects = selection_[k].GetScreenRects(
|
| + visible_rect.point(), current_zoom_, current_rotation_);
|
| + for (size_t j = 0; j < rects.size(); ++j) {
|
| + pp::Rect visible_selection = rects[j].Intersect(dirty_in_screen);
|
| + if (visible_selection.IsEmpty())
|
| + continue;
|
| +
|
| + visible_selection.Offset(
|
| + -dirty_in_screen.point().x(), -dirty_in_screen.point().y());
|
| + Highlight(region, stride, visible_selection, &highlighted_rects);
|
| + }
|
| + }
|
| +
|
| + for (size_t k = 0; k < form_highlights_.size(); ++k) {
|
| + pp::Rect visible_selection = form_highlights_[k].Intersect(dirty_in_screen);
|
| + if (visible_selection.IsEmpty())
|
| + continue;
|
| +
|
| + visible_selection.Offset(
|
| + -dirty_in_screen.point().x(), -dirty_in_screen.point().y());
|
| + Highlight(region, stride, visible_selection, &highlighted_rects);
|
| + }
|
| + form_highlights_.clear();
|
| +}
|
| +
|
| +void PDFiumEngine::PaintUnavailablePage(int page_index,
|
| + const pp::Rect& dirty,
|
| + pp::ImageData* image_data) {
|
| + int start_x, start_y, size_x, size_y;
|
| + GetPDFiumRect(page_index, dirty, &start_x, &start_y, &size_x, &size_y);
|
| + FPDF_BITMAP bitmap = CreateBitmap(dirty, image_data);
|
| + FPDFBitmap_FillRect(bitmap, start_x, start_y, size_x, size_y,
|
| + kPendingPageColorR, kPendingPageColorG, kPendingPageColorB,
|
| + kPendingPageColorA);
|
| +
|
| + pp::Rect loading_text_in_screen(
|
| + pages_[page_index]->rect().width() / 2,
|
| + pages_[page_index]->rect().y() + kLoadingTextVerticalOffset, 0, 0);
|
| + loading_text_in_screen = GetScreenRect(loading_text_in_screen);
|
| + FPDFBitmap_Destroy(bitmap);
|
| +}
|
| +
|
| +int PDFiumEngine::GetProgressiveIndex(int page_index) const {
|
| + for (size_t i = 0; i < progressive_paints_.size(); ++i) {
|
| + if (progressive_paints_[i].page_index == page_index)
|
| + return i;
|
| + }
|
| + return -1;
|
| +}
|
| +
|
| +FPDF_BITMAP PDFiumEngine::CreateBitmap(const pp::Rect& rect,
|
| + pp::ImageData* image_data) const {
|
| + void* region;
|
| + int stride;
|
| + GetRegion(rect.point(), image_data, ®ion, &stride);
|
| + if (!region)
|
| + return NULL;
|
| + return FPDFBitmap_CreateEx(
|
| + rect.width(), rect.height(), FPDFBitmap_BGRx, region, stride);
|
| +}
|
| +
|
| +void PDFiumEngine::GetPDFiumRect(
|
| + int page_index, const pp::Rect& rect, int* start_x, int* start_y,
|
| + int* size_x, int* size_y) const {
|
| + pp::Rect page_rect = GetScreenRect(pages_[page_index]->rect());
|
| + page_rect.Offset(-rect.x(), -rect.y());
|
| +
|
| + *start_x = page_rect.x();
|
| + *start_y = page_rect.y();
|
| + *size_x = page_rect.width();
|
| + *size_y = page_rect.height();
|
| +}
|
| +
|
| +int PDFiumEngine::GetRenderingFlags() const {
|
| + int flags = FPDF_LCD_TEXT | FPDF_NO_CATCH;
|
| + if (render_grayscale_)
|
| + flags |= FPDF_GRAYSCALE;
|
| + if (client_->IsPrintPreview())
|
| + flags |= FPDF_PRINTING;
|
| + return flags;
|
| +}
|
| +
|
| +pp::Rect PDFiumEngine::GetVisibleRect() const {
|
| + pp::Rect rv;
|
| + rv.set_x(static_cast<int>(position_.x() / current_zoom_));
|
| + rv.set_y(static_cast<int>(position_.y() / current_zoom_));
|
| + rv.set_width(static_cast<int>(ceil(plugin_size_.width() / current_zoom_)));
|
| + rv.set_height(static_cast<int>(ceil(plugin_size_.height() / current_zoom_)));
|
| + return rv;
|
| +}
|
| +
|
| +pp::Rect PDFiumEngine::GetPageScreenRect(int page_index) const {
|
| + // Since we use this rect for creating the PDFium bitmap, also include other
|
| + // areas around the page that we might need to update such as the page
|
| + // separator and the sides if the page is narrower than the document.
|
| + return GetScreenRect(pp::Rect(
|
| + 0,
|
| + pages_[page_index]->rect().y() - kPageShadowTop,
|
| + document_size_.width(),
|
| + pages_[page_index]->rect().height() + kPageShadowTop +
|
| + kPageShadowBottom + kPageSeparatorThickness));
|
| +}
|
| +
|
| +pp::Rect PDFiumEngine::GetScreenRect(const pp::Rect& rect) const {
|
| + pp::Rect rv;
|
| + int right =
|
| + static_cast<int>(ceil(rect.right() * current_zoom_ - position_.x()));
|
| + int bottom =
|
| + static_cast<int>(ceil(rect.bottom() * current_zoom_ - position_.y()));
|
| +
|
| + rv.set_x(static_cast<int>(rect.x() * current_zoom_ - position_.x()));
|
| + rv.set_y(static_cast<int>(rect.y() * current_zoom_ - position_.y()));
|
| + rv.set_width(right - rv.x());
|
| + rv.set_height(bottom - rv.y());
|
| + return rv;
|
| +}
|
| +
|
| +void PDFiumEngine::Highlight(void* buffer,
|
| + int stride,
|
| + const pp::Rect& rect,
|
| + std::vector<pp::Rect>* highlighted_rects) {
|
| + if (!buffer)
|
| + return;
|
| +
|
| + pp::Rect new_rect = rect;
|
| + for (size_t i = 0; i < highlighted_rects->size(); ++i)
|
| + new_rect = new_rect.Subtract((*highlighted_rects)[i]);
|
| +
|
| + highlighted_rects->push_back(new_rect);
|
| + int l = new_rect.x();
|
| + int t = new_rect.y();
|
| + int w = new_rect.width();
|
| + int h = new_rect.height();
|
| +
|
| + for (int y = t; y < t + h; ++y) {
|
| + for (int x = l; x < l + w; ++x) {
|
| + uint8* pixel = static_cast<uint8*>(buffer) + y * stride + x * 4;
|
| + // This is our highlight color.
|
| + pixel[0] = static_cast<uint8>(
|
| + pixel[0] * (kHighlightColorB / 255.0));
|
| + pixel[1] = static_cast<uint8>(
|
| + pixel[1] * (kHighlightColorG / 255.0));
|
| + pixel[2] = static_cast<uint8>(
|
| + pixel[2] * (kHighlightColorR / 255.0));
|
| + }
|
| + }
|
| +}
|
| +
|
| +PDFiumEngine::SelectionChangeInvalidator::SelectionChangeInvalidator(
|
| + PDFiumEngine* engine) : engine_(engine) {
|
| + previous_origin_ = engine_->GetVisibleRect().point();
|
| + GetVisibleSelectionsScreenRects(&old_selections_);
|
| +}
|
| +
|
| +PDFiumEngine::SelectionChangeInvalidator::~SelectionChangeInvalidator() {
|
| + // Offset the old selections if the document scrolled since we recorded them.
|
| + pp::Point offset = previous_origin_ - engine_->GetVisibleRect().point();
|
| + for (size_t i = 0; i < old_selections_.size(); ++i)
|
| + old_selections_[i].Offset(offset);
|
| +
|
| + std::vector<pp::Rect> new_selections;
|
| + GetVisibleSelectionsScreenRects(&new_selections);
|
| + for (size_t i = 0; i < new_selections.size(); ++i) {
|
| + for (size_t j = 0; j < old_selections_.size(); ++j) {
|
| + if (new_selections[i] == old_selections_[j]) {
|
| + // Rectangle was selected before and after, so no need to invalidate it.
|
| + // Mark the rectangles by setting them to empty.
|
| + new_selections[i] = old_selections_[j] = pp::Rect();
|
| + }
|
| + }
|
| + }
|
| +
|
| + for (size_t i = 0; i < old_selections_.size(); ++i) {
|
| + if (!old_selections_[i].IsEmpty())
|
| + engine_->client_->Invalidate(old_selections_[i]);
|
| + }
|
| + for (size_t i = 0; i < new_selections.size(); ++i) {
|
| + if (!new_selections[i].IsEmpty())
|
| + engine_->client_->Invalidate(new_selections[i]);
|
| + }
|
| + engine_->OnSelectionChanged();
|
| +}
|
| +
|
| +void
|
| +PDFiumEngine::SelectionChangeInvalidator::GetVisibleSelectionsScreenRects(
|
| + std::vector<pp::Rect>* rects) {
|
| + pp::Rect visible_rect = engine_->GetVisibleRect();
|
| + for (size_t i = 0; i < engine_->selection_.size(); ++i) {
|
| + int page_index = engine_->selection_[i].page_index();
|
| + if (!engine_->IsPageVisible(page_index))
|
| + continue; // This selection is on a page that's not currently visible.
|
| +
|
| + std::vector<pp::Rect> selection_rects =
|
| + engine_->selection_[i].GetScreenRects(
|
| + visible_rect.point(),
|
| + engine_->current_zoom_,
|
| + engine_->current_rotation_);
|
| + rects->insert(rects->end(), selection_rects.begin(), selection_rects.end());
|
| + }
|
| +}
|
| +
|
| +void PDFiumEngine::DeviceToPage(int page_index,
|
| + float device_x,
|
| + float device_y,
|
| + double* page_x,
|
| + double* page_y) {
|
| + *page_x = *page_y = 0;
|
| + int temp_x = static_cast<int>((device_x + position_.x())/ current_zoom_ -
|
| + pages_[page_index]->rect().x());
|
| + int temp_y = static_cast<int>((device_y + position_.y())/ current_zoom_ -
|
| + pages_[page_index]->rect().y());
|
| + FPDF_DeviceToPage(
|
| + pages_[page_index]->GetPage(), 0, 0,
|
| + pages_[page_index]->rect().width(), pages_[page_index]->rect().height(),
|
| + current_rotation_, temp_x, temp_y, page_x, page_y);
|
| +}
|
| +
|
| +int PDFiumEngine::GetVisiblePageIndex(FPDF_PAGE page) {
|
| + for (size_t i = 0; i < visible_pages_.size(); ++i) {
|
| + if (pages_[visible_pages_[i]]->GetPage() == page)
|
| + return visible_pages_[i];
|
| + }
|
| + return -1;
|
| +}
|
| +
|
| +void PDFiumEngine::SetCurrentPage(int index) {
|
| + if (index == most_visible_page_ || !form_)
|
| + return;
|
| + if (most_visible_page_ != -1 && called_do_document_action_) {
|
| + FPDF_PAGE old_page = pages_[most_visible_page_]->GetPage();
|
| + FORM_DoPageAAction(old_page, form_, FPDFPAGE_AACTION_CLOSE);
|
| + }
|
| + most_visible_page_ = index;
|
| +#if defined(OS_LINUX)
|
| + g_last_instance_id = client_->GetPluginInstance()->pp_instance();
|
| +#endif
|
| + if (most_visible_page_ != -1 && called_do_document_action_) {
|
| + FPDF_PAGE new_page = pages_[most_visible_page_]->GetPage();
|
| + FORM_DoPageAAction(new_page, form_, FPDFPAGE_AACTION_OPEN);
|
| + }
|
| +}
|
| +
|
| +void PDFiumEngine::TransformPDFPageForPrinting(
|
| + FPDF_PAGE page,
|
| + const PP_PrintSettings_Dev& print_settings) {
|
| + // Get the source page width and height in points.
|
| + const double src_page_width = FPDF_GetPageWidth(page);
|
| + const double src_page_height = FPDF_GetPageHeight(page);
|
| +
|
| + const int src_page_rotation = FPDFPage_GetRotation(page);
|
| + const bool fit_to_page = print_settings.print_scaling_option ==
|
| + PP_PRINTSCALINGOPTION_FIT_TO_PRINTABLE_AREA;
|
| +
|
| + pp::Size page_size(print_settings.paper_size);
|
| + pp::Rect content_rect(print_settings.printable_area);
|
| + const bool rotated = (src_page_rotation % 2 == 1);
|
| + SetPageSizeAndContentRect(rotated,
|
| + src_page_width > src_page_height,
|
| + &page_size,
|
| + &content_rect);
|
| +
|
| + // Compute the screen page width and height in points.
|
| + const int actual_page_width =
|
| + rotated ? page_size.height() : page_size.width();
|
| + const int actual_page_height =
|
| + rotated ? page_size.width() : page_size.height();
|
| +
|
| + const double scale_factor = CalculateScaleFactor(fit_to_page, content_rect,
|
| + src_page_width,
|
| + src_page_height, rotated);
|
| +
|
| + // Calculate positions for the clip box.
|
| + ClipBox source_clip_box;
|
| + CalculateClipBoxBoundary(page, scale_factor, rotated, &source_clip_box);
|
| +
|
| + // Calculate the translation offset values.
|
| + double offset_x = 0;
|
| + double offset_y = 0;
|
| + if (fit_to_page) {
|
| + CalculateScaledClipBoxOffset(content_rect, source_clip_box, &offset_x,
|
| + &offset_y);
|
| + } else {
|
| + CalculateNonScaledClipBoxOffset(content_rect, src_page_rotation,
|
| + actual_page_width, actual_page_height,
|
| + source_clip_box, &offset_x, &offset_y);
|
| + }
|
| +
|
| + // Reset the media box and crop box. When the page has crop box and media box,
|
| + // the plugin will display the crop box contents and not the entire media box.
|
| + // If the pages have different crop box values, the plugin will display a
|
| + // document of multiple page sizes. To give better user experience, we
|
| + // decided to have same crop box and media box values. Hence, the user will
|
| + // see a list of uniform pages.
|
| + FPDFPage_SetMediaBox(page, 0, 0, page_size.width(), page_size.height());
|
| + FPDFPage_SetCropBox(page, 0, 0, page_size.width(), page_size.height());
|
| +
|
| + // Transformation is not required, return. Do this check only after updating
|
| + // the media box and crop box. For more detailed information, please refer to
|
| + // the comment block right before FPDF_SetMediaBox and FPDF_GetMediaBox calls.
|
| + if (scale_factor == 1.0 && offset_x == 0 && offset_y == 0)
|
| + return;
|
| +
|
| +
|
| + // All the positions have been calculated, now manipulate the PDF.
|
| + FS_MATRIX matrix = {static_cast<float>(scale_factor),
|
| + 0,
|
| + 0,
|
| + static_cast<float>(scale_factor),
|
| + static_cast<float>(offset_x),
|
| + static_cast<float>(offset_y)};
|
| + FS_RECTF cliprect = {static_cast<float>(source_clip_box.left+offset_x),
|
| + static_cast<float>(source_clip_box.top+offset_y),
|
| + static_cast<float>(source_clip_box.right+offset_x),
|
| + static_cast<float>(source_clip_box.bottom+offset_y)};
|
| + FPDFPage_TransFormWithClip(page, &matrix, &cliprect);
|
| + FPDFPage_TransformAnnots(page, scale_factor, 0, 0, scale_factor,
|
| + offset_x, offset_y);
|
| +}
|
| +
|
| +void PDFiumEngine::DrawPageShadow(const pp::Rect& page_rc,
|
| + const pp::Rect& shadow_rc,
|
| + const pp::Rect& clip_rc,
|
| + pp::ImageData* image_data) {
|
| + pp::Rect page_rect(page_rc);
|
| + page_rect.Offset(page_offset_);
|
| +
|
| + pp::Rect shadow_rect(shadow_rc);
|
| + shadow_rect.Offset(page_offset_);
|
| +
|
| + pp::Rect clip_rect(clip_rc);
|
| + clip_rect.Offset(page_offset_);
|
| +
|
| + // Page drop shadow parameters.
|
| + const double factor = 0.5;
|
| + const uint32 background = (kBackgroundColorA << 24) |
|
| + (kBackgroundColorR << 16) |
|
| + (kBackgroundColorG << 8) |
|
| + kBackgroundColorB;
|
| + uint32 depth = std::max(
|
| + std::max(page_rect.x() - shadow_rect.x(),
|
| + page_rect.y() - shadow_rect.y()),
|
| + std::max(shadow_rect.right() - page_rect.right(),
|
| + shadow_rect.bottom() - page_rect.bottom()));
|
| + depth = static_cast<uint32>(depth * 1.5) + 1;
|
| +
|
| + // We need to check depth only to verify our copy of shadow matrix is correct.
|
| + if (!page_shadow_.get() || page_shadow_->depth() != depth)
|
| + page_shadow_.reset(new ShadowMatrix(depth, factor, background));
|
| +
|
| + DCHECK(!image_data->is_null());
|
| + DrawShadow(image_data, shadow_rect, page_rect, clip_rect, *page_shadow_);
|
| +}
|
| +
|
| +void PDFiumEngine::GetRegion(const pp::Point& location,
|
| + pp::ImageData* image_data,
|
| + void** region,
|
| + int* stride) const {
|
| + if (image_data->is_null()) {
|
| + DCHECK(plugin_size_.IsEmpty());
|
| + *stride = 0;
|
| + *region = NULL;
|
| + return;
|
| + }
|
| + char* buffer = static_cast<char*>(image_data->data());
|
| + *stride = image_data->stride();
|
| +
|
| + pp::Point offset_location = location + page_offset_;
|
| + // TODO: update this when we support BIDI and scrollbars can be on the left.
|
| + if (!buffer ||
|
| + !pp::Rect(page_offset_, plugin_size_).Contains(offset_location)) {
|
| + *region = NULL;
|
| + return;
|
| + }
|
| +
|
| + buffer += location.y() * (*stride);
|
| + buffer += (location.x() + page_offset_.x()) * 4;
|
| + *region = buffer;
|
| +}
|
| +
|
| +void PDFiumEngine::OnSelectionChanged() {
|
| + if (HasPermission(PDFEngine::PERMISSION_COPY))
|
| + pp::PDF::SetSelectedText(GetPluginInstance(), GetSelectedText().c_str());
|
| +}
|
| +
|
| +void PDFiumEngine::Form_Invalidate(FPDF_FORMFILLINFO* param,
|
| + FPDF_PAGE page,
|
| + double left,
|
| + double top,
|
| + double right,
|
| + double bottom) {
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + int page_index = engine->GetVisiblePageIndex(page);
|
| + if (page_index == -1) {
|
| + // This can sometime happen when the page is closed because it went off
|
| + // screen, and PDFium invalidates the control as it's being deleted.
|
| + return;
|
| + }
|
| +
|
| + pp::Rect rect = engine->pages_[page_index]->PageToScreen(
|
| + engine->GetVisibleRect().point(), engine->current_zoom_, left, top, right,
|
| + bottom, engine->current_rotation_);
|
| + engine->client_->Invalidate(rect);
|
| +}
|
| +
|
| +void PDFiumEngine::Form_OutputSelectedRect(FPDF_FORMFILLINFO* param,
|
| + FPDF_PAGE page,
|
| + double left,
|
| + double top,
|
| + double right,
|
| + double bottom) {
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + int page_index = engine->GetVisiblePageIndex(page);
|
| + if (page_index == -1) {
|
| + NOTREACHED();
|
| + return;
|
| + }
|
| + pp::Rect rect = engine->pages_[page_index]->PageToScreen(
|
| + engine->GetVisibleRect().point(), engine->current_zoom_, left, top, right,
|
| + bottom, engine->current_rotation_);
|
| + engine->form_highlights_.push_back(rect);
|
| +}
|
| +
|
| +void PDFiumEngine::Form_SetCursor(FPDF_FORMFILLINFO* param, int cursor_type) {
|
| + // We don't need this since it's not enough to change the cursor in all
|
| + // scenarios. Instead, we check which form field we're under in OnMouseMove.
|
| +}
|
| +
|
| +int PDFiumEngine::Form_SetTimer(FPDF_FORMFILLINFO* param,
|
| + int elapse,
|
| + TimerCallback timer_func) {
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + engine->timers_[++engine->next_timer_id_] =
|
| + std::pair<int, TimerCallback>(elapse, timer_func);
|
| + engine->client_->ScheduleCallback(engine->next_timer_id_, elapse);
|
| + return engine->next_timer_id_;
|
| +}
|
| +
|
| +void PDFiumEngine::Form_KillTimer(FPDF_FORMFILLINFO* param, int timer_id) {
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + engine->timers_.erase(timer_id);
|
| +}
|
| +
|
| +FPDF_SYSTEMTIME PDFiumEngine::Form_GetLocalTime(FPDF_FORMFILLINFO* param) {
|
| + base::Time time = base::Time::Now();
|
| + base::Time::Exploded exploded;
|
| + time.LocalExplode(&exploded);
|
| +
|
| + FPDF_SYSTEMTIME rv;
|
| + rv.wYear = exploded.year;
|
| + rv.wMonth = exploded.month;
|
| + rv.wDayOfWeek = exploded.day_of_week;
|
| + rv.wDay = exploded.day_of_month;
|
| + rv.wHour = exploded.hour;
|
| + rv.wMinute = exploded.minute;
|
| + rv.wSecond = exploded.second;
|
| + rv.wMilliseconds = exploded.millisecond;
|
| + return rv;
|
| +}
|
| +
|
| +void PDFiumEngine::Form_OnChange(FPDF_FORMFILLINFO* param) {
|
| + // Don't care about.
|
| +}
|
| +
|
| +FPDF_PAGE PDFiumEngine::Form_GetPage(FPDF_FORMFILLINFO* param,
|
| + FPDF_DOCUMENT document,
|
| + int page_index) {
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + if (page_index < 0 || page_index >= static_cast<int>(engine->pages_.size()))
|
| + return NULL;
|
| + return engine->pages_[page_index]->GetPage();
|
| +}
|
| +
|
| +FPDF_PAGE PDFiumEngine::Form_GetCurrentPage(FPDF_FORMFILLINFO* param,
|
| + FPDF_DOCUMENT document) {
|
| + // TODO(jam): find out what this is used for.
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + int index = engine->last_page_mouse_down_;
|
| + if (index == -1) {
|
| + index = engine->GetMostVisiblePage();
|
| + if (index == -1) {
|
| + NOTREACHED();
|
| + return NULL;
|
| + }
|
| + }
|
| +
|
| + return engine->pages_[index]->GetPage();
|
| +}
|
| +
|
| +int PDFiumEngine::Form_GetRotation(FPDF_FORMFILLINFO* param, FPDF_PAGE page) {
|
| + return 0;
|
| +}
|
| +
|
| +void PDFiumEngine::Form_ExecuteNamedAction(FPDF_FORMFILLINFO* param,
|
| + FPDF_BYTESTRING named_action) {
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + std::string action(named_action);
|
| + if (action == "Print") {
|
| + engine->client_->Print();
|
| + return;
|
| + }
|
| +
|
| + int index = engine->last_page_mouse_down_;
|
| + /* Don't try to calculate the most visible page if we don't have a left click
|
| + before this event (this code originally copied Form_GetCurrentPage which of
|
| + course needs to do that and which doesn't have recursion). This can end up
|
| + causing infinite recursion. See http://crbug.com/240413 for more
|
| + information. Either way, it's not necessary for the spec'd list of named
|
| + actions.
|
| + if (index == -1)
|
| + index = engine->GetMostVisiblePage();
|
| + */
|
| + if (index == -1)
|
| + return;
|
| +
|
| + // This is the only list of named actions per the spec (see 12.6.4.11). Adobe
|
| + // Reader supports more, like FitWidth, but since they're not part of the spec
|
| + // and we haven't got bugs about them, no need to now.
|
| + if (action == "NextPage") {
|
| + engine->client_->ScrollToPage(index + 1);
|
| + } else if (action == "PrevPage") {
|
| + engine->client_->ScrollToPage(index - 1);
|
| + } else if (action == "FirstPage") {
|
| + engine->client_->ScrollToPage(0);
|
| + } else if (action == "LastPage") {
|
| + engine->client_->ScrollToPage(engine->pages_.size() - 1);
|
| + }
|
| +}
|
| +
|
| +void PDFiumEngine::Form_SetTextFieldFocus(FPDF_FORMFILLINFO* param,
|
| + FPDF_WIDESTRING value,
|
| + FPDF_DWORD valueLen,
|
| + FPDF_BOOL is_focus) {
|
| + // Do nothing for now.
|
| + // TODO(gene): use this signal to trigger OSK.
|
| +}
|
| +
|
| +void PDFiumEngine::Form_DoURIAction(FPDF_FORMFILLINFO* param,
|
| + FPDF_BYTESTRING uri) {
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + engine->client_->NavigateTo(std::string(uri), false);
|
| +}
|
| +
|
| +void PDFiumEngine::Form_DoGoToAction(FPDF_FORMFILLINFO* param,
|
| + int page_index,
|
| + int zoom_mode,
|
| + float* position_array,
|
| + int size_of_array) {
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + engine->client_->ScrollToPage(page_index);
|
| +}
|
| +
|
| +int PDFiumEngine::Form_Alert(IPDF_JSPLATFORM* param,
|
| + FPDF_WIDESTRING message,
|
| + FPDF_WIDESTRING title,
|
| + int type,
|
| + int icon) {
|
| + // See fpdfformfill.h for these values.
|
| + enum AlertType {
|
| + ALERT_TYPE_OK = 0,
|
| + ALERT_TYPE_OK_CANCEL,
|
| + ALERT_TYPE_YES_ON,
|
| + ALERT_TYPE_YES_NO_CANCEL
|
| + };
|
| +
|
| + enum AlertResult {
|
| + ALERT_RESULT_OK = 1,
|
| + ALERT_RESULT_CANCEL,
|
| + ALERT_RESULT_NO,
|
| + ALERT_RESULT_YES
|
| + };
|
| +
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + std::string message_str =
|
| + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(message));
|
| + if (type == ALERT_TYPE_OK) {
|
| + engine->client_->Alert(message_str);
|
| + return ALERT_RESULT_OK;
|
| + }
|
| +
|
| + bool rv = engine->client_->Confirm(message_str);
|
| + if (type == ALERT_TYPE_OK_CANCEL)
|
| + return rv ? ALERT_RESULT_OK : ALERT_RESULT_CANCEL;
|
| + return rv ? ALERT_RESULT_YES : ALERT_RESULT_NO;
|
| +}
|
| +
|
| +void PDFiumEngine::Form_Beep(IPDF_JSPLATFORM* param, int type) {
|
| + // Beeps are annoying, and not possible using javascript, so ignore for now.
|
| +}
|
| +
|
| +int PDFiumEngine::Form_Response(IPDF_JSPLATFORM* param,
|
| + FPDF_WIDESTRING question,
|
| + FPDF_WIDESTRING title,
|
| + FPDF_WIDESTRING default_response,
|
| + FPDF_WIDESTRING label,
|
| + FPDF_BOOL password,
|
| + void* response,
|
| + int length) {
|
| + std::string question_str = base::UTF16ToUTF8(
|
| + reinterpret_cast<const base::char16*>(question));
|
| + std::string default_str = base::UTF16ToUTF8(
|
| + reinterpret_cast<const base::char16*>(default_response));
|
| +
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + std::string rv = engine->client_->Prompt(question_str, default_str);
|
| + base::string16 rv_16 = base::UTF8ToUTF16(rv);
|
| + int rv_bytes = rv_16.size() * sizeof(base::char16);
|
| + if (response && rv_bytes <= length)
|
| + memcpy(response, rv_16.c_str(), rv_bytes);
|
| + return rv_bytes;
|
| +}
|
| +
|
| +int PDFiumEngine::Form_GetFilePath(IPDF_JSPLATFORM* param,
|
| + void* file_path,
|
| + int length) {
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + std::string rv = engine->client_->GetURL();
|
| + if (file_path && rv.size() <= static_cast<size_t>(length))
|
| + memcpy(file_path, rv.c_str(), rv.size());
|
| + return rv.size();
|
| +}
|
| +
|
| +void PDFiumEngine::Form_Mail(IPDF_JSPLATFORM* param,
|
| + void* mail_data,
|
| + int length,
|
| + FPDF_BOOL ui,
|
| + FPDF_WIDESTRING to,
|
| + FPDF_WIDESTRING subject,
|
| + FPDF_WIDESTRING cc,
|
| + FPDF_WIDESTRING bcc,
|
| + FPDF_WIDESTRING message) {
|
| + DCHECK(length == 0); // Don't handle attachments; no way with mailto.
|
| + std::string to_str =
|
| + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(to));
|
| + std::string cc_str =
|
| + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(cc));
|
| + std::string bcc_str =
|
| + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(bcc));
|
| + std::string subject_str =
|
| + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(subject));
|
| + std::string message_str =
|
| + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(message));
|
| +
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + engine->client_->Email(to_str, cc_str, bcc_str, subject_str, message_str);
|
| +}
|
| +
|
| +void PDFiumEngine::Form_Print(IPDF_JSPLATFORM* param,
|
| + FPDF_BOOL ui,
|
| + int start,
|
| + int end,
|
| + FPDF_BOOL silent,
|
| + FPDF_BOOL shrink_to_fit,
|
| + FPDF_BOOL print_as_image,
|
| + FPDF_BOOL reverse,
|
| + FPDF_BOOL annotations) {
|
| + // No way to pass the extra information to the print dialog using JavaScript.
|
| + // Just opening it is fine for now.
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + engine->client_->Print();
|
| +}
|
| +
|
| +void PDFiumEngine::Form_SubmitForm(IPDF_JSPLATFORM* param,
|
| + void* form_data,
|
| + int length,
|
| + FPDF_WIDESTRING url) {
|
| + std::string url_str =
|
| + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(url));
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + engine->client_->SubmitForm(url_str, form_data, length);
|
| +}
|
| +
|
| +void PDFiumEngine::Form_GotoPage(IPDF_JSPLATFORM* param,
|
| + int page_number) {
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + engine->client_->ScrollToPage(page_number);
|
| +}
|
| +
|
| +int PDFiumEngine::Form_Browse(IPDF_JSPLATFORM* param,
|
| + void* file_path,
|
| + int length) {
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + std::string path = engine->client_->ShowFileSelectionDialog();
|
| + if (path.size() + 1 <= static_cast<size_t>(length))
|
| + memcpy(file_path, &path[0], path.size() + 1);
|
| + return path.size() + 1;
|
| +}
|
| +
|
| +FPDF_BOOL PDFiumEngine::Pause_NeedToPauseNow(IFSDK_PAUSE* param) {
|
| + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
|
| + return (base::Time::Now() - engine->last_progressive_start_time_).
|
| + InMilliseconds() > engine->progressive_paint_timeout_;
|
| +}
|
| +
|
| +ScopedUnsupportedFeature::ScopedUnsupportedFeature(PDFiumEngine* engine)
|
| + : engine_(engine), old_engine_(g_engine_for_unsupported) {
|
| + g_engine_for_unsupported = engine_;
|
| +}
|
| +
|
| +ScopedUnsupportedFeature::~ScopedUnsupportedFeature() {
|
| + g_engine_for_unsupported = old_engine_;
|
| +}
|
| +
|
| +PDFEngineExports* PDFEngineExports::Create() {
|
| + return new PDFiumEngineExports;
|
| +}
|
| +
|
| +namespace {
|
| +
|
| +int CalculatePosition(FPDF_PAGE page,
|
| + const PDFiumEngineExports::RenderingSettings& settings,
|
| + pp::Rect* dest) {
|
| + int page_width = static_cast<int>(
|
| + FPDF_GetPageWidth(page) * settings.dpi_x / kPointsPerInch);
|
| + int page_height = static_cast<int>(
|
| + FPDF_GetPageHeight(page) * settings.dpi_y / kPointsPerInch);
|
| +
|
| + // Start by assuming that we will draw exactly to the bounds rect
|
| + // specified.
|
| + *dest = settings.bounds;
|
| +
|
| + int rotate = 0; // normal orientation.
|
| +
|
| + // Auto-rotate landscape pages to print correctly.
|
| + if (settings.autorotate &&
|
| + (dest->width() > dest->height()) != (page_width > page_height)) {
|
| + rotate = 1; // 90 degrees clockwise.
|
| + std::swap(page_width, page_height);
|
| + }
|
| +
|
| + // See if we need to scale the output
|
| + bool scale_to_bounds = false;
|
| + if (settings.fit_to_bounds &&
|
| + ((page_width > dest->width()) || (page_height > dest->height()))) {
|
| + scale_to_bounds = true;
|
| + } else if (settings.stretch_to_bounds &&
|
| + ((page_width < dest->width()) || (page_height < dest->height()))) {
|
| + scale_to_bounds = true;
|
| + }
|
| +
|
| + if (scale_to_bounds) {
|
| + // If we need to maintain aspect ratio, calculate the actual width and
|
| + // height.
|
| + if (settings.keep_aspect_ratio) {
|
| + double scale_factor_x = page_width;
|
| + scale_factor_x /= dest->width();
|
| + double scale_factor_y = page_height;
|
| + scale_factor_y /= dest->height();
|
| + if (scale_factor_x > scale_factor_y) {
|
| + dest->set_height(page_height / scale_factor_x);
|
| + } else {
|
| + dest->set_width(page_width / scale_factor_y);
|
| + }
|
| + }
|
| + } else {
|
| + // We are not scaling to bounds. Draw in the actual page size. If the
|
| + // actual page size is larger than the bounds, the output will be
|
| + // clipped.
|
| + dest->set_width(page_width);
|
| + dest->set_height(page_height);
|
| + }
|
| +
|
| + if (settings.center_in_bounds) {
|
| + pp::Point offset((settings.bounds.width() - dest->width()) / 2,
|
| + (settings.bounds.height() - dest->height()) / 2);
|
| + dest->Offset(offset);
|
| + }
|
| + return rotate;
|
| +}
|
| +
|
| +} // namespace
|
| +
|
| +#if defined(OS_WIN)
|
| +bool PDFiumEngineExports::RenderPDFPageToDC(const void* pdf_buffer,
|
| + int buffer_size,
|
| + int page_number,
|
| + const RenderingSettings& settings,
|
| + HDC dc) {
|
| + FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, buffer_size, NULL);
|
| + if (!doc)
|
| + return false;
|
| + FPDF_PAGE page = FPDF_LoadPage(doc, page_number);
|
| + if (!page) {
|
| + FPDF_CloseDocument(doc);
|
| + return false;
|
| + }
|
| + RenderingSettings new_settings = settings;
|
| + // calculate the page size
|
| + if (new_settings.dpi_x == -1)
|
| + new_settings.dpi_x = GetDeviceCaps(dc, LOGPIXELSX);
|
| + if (new_settings.dpi_y == -1)
|
| + new_settings.dpi_y = GetDeviceCaps(dc, LOGPIXELSY);
|
| +
|
| + pp::Rect dest;
|
| + int rotate = CalculatePosition(page, new_settings, &dest);
|
| +
|
| + int save_state = SaveDC(dc);
|
| + // The caller wanted all drawing to happen within the bounds specified.
|
| + // Based on scale calculations, our destination rect might be larger
|
| + // than the bounds. Set the clip rect to the bounds.
|
| + IntersectClipRect(dc, settings.bounds.x(), settings.bounds.y(),
|
| + settings.bounds.x() + settings.bounds.width(),
|
| + settings.bounds.y() + settings.bounds.height());
|
| +
|
| + // A temporary hack. PDFs generated by Cairo (used by Chrome OS to generate
|
| + // a PDF output from a webpage) result in very large metafiles and the
|
| + // rendering using FPDF_RenderPage is incorrect. In this case, render as a
|
| + // bitmap. Note that this code does not kick in for PDFs printed from Chrome
|
| + // because in that case we create a temp PDF first before printing and this
|
| + // temp PDF does not have a creator string that starts with "cairo".
|
| + base::string16 creator;
|
| + size_t buffer_bytes = FPDF_GetMetaText(doc, "Creator", NULL, 0);
|
| + if (buffer_bytes > 1) {
|
| + FPDF_GetMetaText(doc, "Creator", WriteInto(&creator, buffer_bytes),
|
| + buffer_bytes);
|
| + }
|
| + bool use_bitmap = false;
|
| + if (StartsWith(creator, L"cairo", false))
|
| + use_bitmap = true;
|
| +
|
| + // Another temporary hack. Some PDFs seems to render very slowly if
|
| + // FPDF_RenderPage is directly used on a printer DC. I suspect it is
|
| + // because of the code to talk Postscript directly to the printer if
|
| + // the printer supports this. Need to discuss this with PDFium. For now,
|
| + // render to a bitmap and then blit the bitmap to the DC if we have been
|
| + // supplied a printer DC.
|
| + int device_type = GetDeviceCaps(dc, TECHNOLOGY);
|
| + if (use_bitmap ||
|
| + (device_type == DT_RASPRINTER) || (device_type == DT_PLOTTER)) {
|
| + FPDF_BITMAP bitmap = FPDFBitmap_Create(dest.width(), dest.height(),
|
| + FPDFBitmap_BGRx);
|
| + // Clear the bitmap
|
| + FPDFBitmap_FillRect(bitmap, 0, 0, dest.width(), dest.height(), 255, 255,
|
| + 255, 255);
|
| + FPDF_RenderPageBitmap(
|
| + bitmap, page, 0, 0, dest.width(), dest.height(), rotate,
|
| + FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);
|
| + int stride = FPDFBitmap_GetStride(bitmap);
|
| + BITMAPINFO bmi;
|
| + memset(&bmi, 0, sizeof(bmi));
|
| + bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
|
| + bmi.bmiHeader.biWidth = dest.width();
|
| + bmi.bmiHeader.biHeight = -dest.height(); // top-down image
|
| + bmi.bmiHeader.biPlanes = 1;
|
| + bmi.bmiHeader.biBitCount = 32;
|
| + bmi.bmiHeader.biCompression = BI_RGB;
|
| + bmi.bmiHeader.biSizeImage = stride * dest.height();
|
| + StretchDIBits(dc, dest.x(), dest.y(), dest.width(), dest.height(),
|
| + 0, 0, dest.width(), dest.height(),
|
| + FPDFBitmap_GetBuffer(bitmap), &bmi, DIB_RGB_COLORS, SRCCOPY);
|
| + FPDFBitmap_Destroy(bitmap);
|
| + } else {
|
| + FPDF_RenderPage(dc, page, dest.x(), dest.y(), dest.width(), dest.height(),
|
| + rotate, FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);
|
| + }
|
| + RestoreDC(dc, save_state);
|
| + FPDF_ClosePage(page);
|
| + FPDF_CloseDocument(doc);
|
| + return true;
|
| +}
|
| +#endif // OS_WIN
|
| +
|
| +bool PDFiumEngineExports::RenderPDFPageToBitmap(
|
| + const void* pdf_buffer,
|
| + int pdf_buffer_size,
|
| + int page_number,
|
| + const RenderingSettings& settings,
|
| + void* bitmap_buffer) {
|
| + FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, NULL);
|
| + if (!doc)
|
| + return false;
|
| + FPDF_PAGE page = FPDF_LoadPage(doc, page_number);
|
| + if (!page) {
|
| + FPDF_CloseDocument(doc);
|
| + return false;
|
| + }
|
| +
|
| + pp::Rect dest;
|
| + int rotate = CalculatePosition(page, settings, &dest);
|
| +
|
| + FPDF_BITMAP bitmap =
|
| + FPDFBitmap_CreateEx(settings.bounds.width(), settings.bounds.height(),
|
| + FPDFBitmap_BGRA, bitmap_buffer,
|
| + settings.bounds.width() * 4);
|
| + // Clear the bitmap
|
| + FPDFBitmap_FillRect(bitmap, 0, 0, settings.bounds.width(),
|
| + settings.bounds.height(), 255, 255, 255, 255);
|
| + // Shift top-left corner of bounds to (0, 0) if it's not there.
|
| + dest.set_point(dest.point() - settings.bounds.point());
|
| + FPDF_RenderPageBitmap(
|
| + bitmap, page, dest.x(), dest.y(), dest.width(), dest.height(), rotate,
|
| + FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);
|
| + FPDFBitmap_Destroy(bitmap);
|
| + FPDF_ClosePage(page);
|
| + FPDF_CloseDocument(doc);
|
| + return true;
|
| +}
|
| +
|
| +bool PDFiumEngineExports::GetPDFDocInfo(const void* pdf_buffer,
|
| + int buffer_size,
|
| + int* page_count,
|
| + double* max_page_width) {
|
| + FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, buffer_size, NULL);
|
| + if (!doc)
|
| + return false;
|
| + int page_count_local = FPDF_GetPageCount(doc);
|
| + if (page_count) {
|
| + *page_count = page_count_local;
|
| + }
|
| + if (max_page_width) {
|
| + *max_page_width = 0;
|
| + for (int page_number = 0; page_number < page_count_local; page_number++) {
|
| + double page_width = 0;
|
| + double page_height = 0;
|
| + FPDF_GetPageSizeByIndex(doc, page_number, &page_width, &page_height);
|
| + if (page_width > *max_page_width) {
|
| + *max_page_width = page_width;
|
| + }
|
| + }
|
| + }
|
| + FPDF_CloseDocument(doc);
|
| + return true;
|
| +}
|
| +
|
| +} // namespace chrome_pdf
|
|
|
| Property changes on: pdf\pdfium\pdfium_engine.cc
|
| ___________________________________________________________________
|
| Added: svn:eol-style
|
| + LF
|
|
|
|
|
Chromium Code Reviews
Issue 294793003:
Add the pdf plugin's source in src\pdf. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src/