Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(94)

Issues Search
    My Issues | Starred     Open | Closed | All

Unified Diff: android_webview/renderer/print_web_view_helper.cc

Issue 822133003: Refactor webview to use //components/printing (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Created 5 years, 11 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View side-by-side diff with in-line comments
Download patch
« no previous file with comments | « android_webview/renderer/print_web_view_helper.h ('k') | android_webview/renderer/print_web_view_helper_android.cc » ('j') | components/components.gyp » ('J')
Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
Index: android_webview/renderer/print_web_view_helper.cc
diff --git a/android_webview/renderer/print_web_view_helper.cc b/android_webview/renderer/print_web_view_helper.cc
deleted file mode 100644
index 6a06fc4a81162e922bdfb40f78521772c410a95c..0000000000000000000000000000000000000000
--- a/android_webview/renderer/print_web_view_helper.cc
+++ /dev/null
@@ -1,2017 +0,0 @@
-// Copyright 2013 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.
-
-// TODO(sgurun) copied from chrome/renderer. Remove after crbug.com/322276
-
-#include "android_webview/renderer/print_web_view_helper.h"
-
-#include <string>
-
-#include "android_webview/common/print_messages.h"
-#include "base/auto_reset.h"
-#include "base/command_line.h"
-#include "base/json/json_writer.h"
-#include "base/logging.h"
-#include "base/message_loop/message_loop.h"
-#include "base/metrics/histogram.h"
-#include "base/process/process_handle.h"
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/stringprintf.h"
-#include "base/strings/utf_string_conversions.h"
-#include "content/public/common/web_preferences.h"
-#include "content/public/renderer/render_thread.h"
-#include "content/public/renderer/render_view.h"
-#include "net/base/escape.h"
-#include "printing/pdf_metafile_skia.h"
-#include "printing/units.h"
-#include "third_party/WebKit/public/platform/WebSize.h"
-#include "third_party/WebKit/public/platform/WebURLRequest.h"
-#include "third_party/WebKit/public/web/WebConsoleMessage.h"
-#include "third_party/WebKit/public/web/WebDocument.h"
-#include "third_party/WebKit/public/web/WebElement.h"
-#include "third_party/WebKit/public/web/WebFrameClient.h"
-#include "third_party/WebKit/public/web/WebLocalFrame.h"
-#include "third_party/WebKit/public/web/WebPlugin.h"
-#include "third_party/WebKit/public/web/WebPluginDocument.h"
-#include "third_party/WebKit/public/web/WebPrintParams.h"
-#include "third_party/WebKit/public/web/WebPrintScalingOption.h"
-#include "third_party/WebKit/public/web/WebScriptSource.h"
-#include "third_party/WebKit/public/web/WebSettings.h"
-#include "third_party/WebKit/public/web/WebView.h"
-#include "third_party/WebKit/public/web/WebViewClient.h"
-#include "ui/base/l10n/l10n_util.h"
-#include "ui/base/resource/resource_bundle.h"
-
-// This code is copied from chrome/renderer/printing. Code is slightly
-// modified to run it with webview, and the modifications are marked
-// using OS_ANDROID.
-// TODO(sgurun): remove the code as part of componentization of printing.
-
-using content::WebPreferences;
-
-namespace printing {
-
-namespace {
-
-enum PrintPreviewHelperEvents {
- PREVIEW_EVENT_REQUESTED,
- PREVIEW_EVENT_CACHE_HIT, // Unused
- PREVIEW_EVENT_CREATE_DOCUMENT,
- PREVIEW_EVENT_NEW_SETTINGS, // Unused
- PREVIEW_EVENT_MAX,
-};
-
-const double kMinDpi = 1.0;
-
-#if 0
-// TODO(sgurun) android_webview hack
-const char kPageLoadScriptFormat[] =
- "document.open(); document.write(%s); document.close();";
-
-const char kPageSetupScriptFormat[] = "setup(%s);";
-
-void ExecuteScript(blink::WebFrame* frame,
- const char* script_format,
- const base::Value& parameters) {
- std::string json;
- base::JSONWriter::Write(&parameters, &json);
- std::string script = base::StringPrintf(script_format, json.c_str());
- frame->executeScript(blink::WebString(base::UTF8ToUTF16(script)));
-}
-#endif
-
-int GetDPI(const PrintMsg_Print_Params* print_params) {
-#if defined(OS_MACOSX)
- // On the Mac, the printable area is in points, don't do any scaling based
- // on dpi.
- return kPointsPerInch;
-#else
- return static_cast<int>(print_params->dpi);
-#endif // defined(OS_MACOSX)
-}
-
-bool PrintMsg_Print_Params_IsValid(const PrintMsg_Print_Params& params) {
- return !params.content_size.IsEmpty() && !params.page_size.IsEmpty() &&
- !params.printable_area.IsEmpty() && params.document_cookie &&
- params.desired_dpi && params.max_shrink && params.min_shrink &&
- params.dpi && (params.margin_top >= 0) && (params.margin_left >= 0);
-}
-
-PrintMsg_Print_Params GetCssPrintParams(
- blink::WebFrame* frame,
- int page_index,
- const PrintMsg_Print_Params& page_params) {
- PrintMsg_Print_Params page_css_params = page_params;
- int dpi = GetDPI(&page_params);
-
- blink::WebSize page_size_in_pixels(
- ConvertUnit(page_params.page_size.width(), dpi, kPixelsPerInch),
- ConvertUnit(page_params.page_size.height(), dpi, kPixelsPerInch));
- int margin_top_in_pixels =
- ConvertUnit(page_params.margin_top, dpi, kPixelsPerInch);
- int margin_right_in_pixels = ConvertUnit(
- page_params.page_size.width() -
- page_params.content_size.width() - page_params.margin_left,
- dpi, kPixelsPerInch);
- int margin_bottom_in_pixels = ConvertUnit(
- page_params.page_size.height() -
- page_params.content_size.height() - page_params.margin_top,
- dpi, kPixelsPerInch);
- int margin_left_in_pixels = ConvertUnit(
- page_params.margin_left,
- dpi, kPixelsPerInch);
-
- blink::WebSize original_page_size_in_pixels = page_size_in_pixels;
-
- if (frame) {
- frame->pageSizeAndMarginsInPixels(page_index,
- page_size_in_pixels,
- margin_top_in_pixels,
- margin_right_in_pixels,
- margin_bottom_in_pixels,
- margin_left_in_pixels);
- }
-
- int new_content_width = page_size_in_pixels.width -
- margin_left_in_pixels - margin_right_in_pixels;
- int new_content_height = page_size_in_pixels.height -
- margin_top_in_pixels - margin_bottom_in_pixels;
-
- // Invalid page size and/or margins. We just use the default setting.
- if (new_content_width < 1 || new_content_height < 1) {
- CHECK(frame);
- page_css_params = GetCssPrintParams(NULL, page_index, page_params);
- return page_css_params;
- }
-
- page_css_params.content_size = gfx::Size(
- ConvertUnit(new_content_width, kPixelsPerInch, dpi),
- ConvertUnit(new_content_height, kPixelsPerInch, dpi));
-
- if (original_page_size_in_pixels != page_size_in_pixels) {
- page_css_params.page_size = gfx::Size(
- ConvertUnit(page_size_in_pixels.width, kPixelsPerInch, dpi),
- ConvertUnit(page_size_in_pixels.height, kPixelsPerInch, dpi));
- } else {
- // Printing frame doesn't have any page size css. Pixels to dpi conversion
- // causes rounding off errors. Therefore use the default page size values
- // directly.
- page_css_params.page_size = page_params.page_size;
- }
-
- page_css_params.margin_top =
- ConvertUnit(margin_top_in_pixels, kPixelsPerInch, dpi);
- page_css_params.margin_left =
- ConvertUnit(margin_left_in_pixels, kPixelsPerInch, dpi);
- return page_css_params;
-}
-
-double FitPrintParamsToPage(const PrintMsg_Print_Params& page_params,
- PrintMsg_Print_Params* params_to_fit) {
- double content_width =
- static_cast<double>(params_to_fit->content_size.width());
- double content_height =
- static_cast<double>(params_to_fit->content_size.height());
- int default_page_size_height = page_params.page_size.height();
- int default_page_size_width = page_params.page_size.width();
- int css_page_size_height = params_to_fit->page_size.height();
- int css_page_size_width = params_to_fit->page_size.width();
-
- double scale_factor = 1.0f;
- if (page_params.page_size == params_to_fit->page_size)
- return scale_factor;
-
- if (default_page_size_width < css_page_size_width ||
- default_page_size_height < css_page_size_height) {
- double ratio_width =
- static_cast<double>(default_page_size_width) / css_page_size_width;
- double ratio_height =
- static_cast<double>(default_page_size_height) / css_page_size_height;
- scale_factor = ratio_width < ratio_height ? ratio_width : ratio_height;
- content_width *= scale_factor;
- content_height *= scale_factor;
- }
- params_to_fit->margin_top = static_cast<int>(
- (default_page_size_height - css_page_size_height * scale_factor) / 2 +
- (params_to_fit->margin_top * scale_factor));
- params_to_fit->margin_left = static_cast<int>(
- (default_page_size_width - css_page_size_width * scale_factor) / 2 +
- (params_to_fit->margin_left * scale_factor));
- params_to_fit->content_size = gfx::Size(
- static_cast<int>(content_width), static_cast<int>(content_height));
- params_to_fit->page_size = page_params.page_size;
- return scale_factor;
-}
-
-void CalculatePageLayoutFromPrintParams(
- const PrintMsg_Print_Params& params,
- PageSizeMargins* page_layout_in_points) {
- int dpi = GetDPI(&params);
- int content_width = params.content_size.width();
- int content_height = params.content_size.height();
-
- int margin_bottom = params.page_size.height() -
- content_height - params.margin_top;
- int margin_right = params.page_size.width() -
- content_width - params.margin_left;
-
- page_layout_in_points->content_width =
- ConvertUnit(content_width, dpi, kPointsPerInch);
- page_layout_in_points->content_height =
- ConvertUnit(content_height, dpi, kPointsPerInch);
- page_layout_in_points->margin_top =
- ConvertUnit(params.margin_top, dpi, kPointsPerInch);
- page_layout_in_points->margin_right =
- ConvertUnit(margin_right, dpi, kPointsPerInch);
- page_layout_in_points->margin_bottom =
- ConvertUnit(margin_bottom, dpi, kPointsPerInch);
- page_layout_in_points->margin_left =
- ConvertUnit(params.margin_left, dpi, kPointsPerInch);
-}
-
-void EnsureOrientationMatches(const PrintMsg_Print_Params& css_params,
- PrintMsg_Print_Params* page_params) {
- if ((page_params->page_size.width() > page_params->page_size.height()) ==
- (css_params.page_size.width() > css_params.page_size.height())) {
- return;
- }
-
- // Swap the |width| and |height| values.
- page_params->page_size.SetSize(page_params->page_size.height(),
- page_params->page_size.width());
- page_params->content_size.SetSize(page_params->content_size.height(),
- page_params->content_size.width());
- page_params->printable_area.set_size(
- gfx::Size(page_params->printable_area.height(),
- page_params->printable_area.width()));
-}
-
-void ComputeWebKitPrintParamsInDesiredDpi(
- const PrintMsg_Print_Params& print_params,
- blink::WebPrintParams* webkit_print_params) {
- int dpi = GetDPI(&print_params);
- webkit_print_params->printerDPI = dpi;
- webkit_print_params->printScalingOption = print_params.print_scaling_option;
-
- webkit_print_params->printContentArea.width =
- ConvertUnit(print_params.content_size.width(), dpi,
- print_params.desired_dpi);
- webkit_print_params->printContentArea.height =
- ConvertUnit(print_params.content_size.height(), dpi,
- print_params.desired_dpi);
-
- webkit_print_params->printableArea.x =
- ConvertUnit(print_params.printable_area.x(), dpi,
- print_params.desired_dpi);
- webkit_print_params->printableArea.y =
- ConvertUnit(print_params.printable_area.y(), dpi,
- print_params.desired_dpi);
- webkit_print_params->printableArea.width =
- ConvertUnit(print_params.printable_area.width(), dpi,
- print_params.desired_dpi);
- webkit_print_params->printableArea.height =
- ConvertUnit(print_params.printable_area.height(),
- dpi, print_params.desired_dpi);
-
- webkit_print_params->paperSize.width =
- ConvertUnit(print_params.page_size.width(), dpi,
- print_params.desired_dpi);
- webkit_print_params->paperSize.height =
- ConvertUnit(print_params.page_size.height(), dpi,
- print_params.desired_dpi);
-}
-
-blink::WebPlugin* GetPlugin(const blink::WebFrame* frame) {
- return frame->document().isPluginDocument() ?
- frame->document().to<blink::WebPluginDocument>().plugin() : NULL;
-}
-
-bool PrintingNodeOrPdfFrame(const blink::WebFrame* frame,
- const blink::WebNode& node) {
- if (!node.isNull())
- return true;
- blink::WebPlugin* plugin = GetPlugin(frame);
- return plugin && plugin->supportsPaginatedPrint();
-}
-
-bool PrintingFrameHasPageSizeStyle(blink::WebFrame* frame,
- int total_page_count) {
- if (!frame)
- return false;
- bool frame_has_custom_page_size_style = false;
- for (int i = 0; i < total_page_count; ++i) {
- if (frame->hasCustomPageSizeStyle(i)) {
- frame_has_custom_page_size_style = true;
- break;
- }
- }
- return frame_has_custom_page_size_style;
-}
-
-MarginType GetMarginsForPdf(blink::WebFrame* frame,
- const blink::WebNode& node) {
- if (frame->isPrintScalingDisabledForPlugin(node))
- return NO_MARGINS;
- else
- return PRINTABLE_AREA_MARGINS;
-}
-
-bool FitToPageEnabled(const base::DictionaryValue& job_settings) {
- bool fit_to_paper_size = false;
- if (!job_settings.GetBoolean(kSettingFitToPageEnabled, &fit_to_paper_size)) {
- NOTREACHED();
- }
- return fit_to_paper_size;
-}
-
-PrintMsg_Print_Params CalculatePrintParamsForCss(
- blink::WebFrame* frame,
- int page_index,
- const PrintMsg_Print_Params& page_params,
- bool ignore_css_margins,
- bool fit_to_page,
- double* scale_factor) {
- PrintMsg_Print_Params css_params = GetCssPrintParams(frame, page_index,
- page_params);
-
- PrintMsg_Print_Params params = page_params;
- EnsureOrientationMatches(css_params, &params);
-
- if (ignore_css_margins && fit_to_page)
- return params;
-
- PrintMsg_Print_Params result_params = css_params;
- if (ignore_css_margins) {
- result_params.margin_top = params.margin_top;
- result_params.margin_left = params.margin_left;
-
- DCHECK(!fit_to_page);
- // Since we are ignoring the margins, the css page size is no longer
- // valid.
- int default_margin_right = params.page_size.width() -
- params.content_size.width() - params.margin_left;
- int default_margin_bottom = params.page_size.height() -
- params.content_size.height() - params.margin_top;
- result_params.content_size = gfx::Size(
- result_params.page_size.width() - result_params.margin_left -
- default_margin_right,
- result_params.page_size.height() - result_params.margin_top -
- default_margin_bottom);
- }
-
- if (fit_to_page) {
- double factor = FitPrintParamsToPage(params, &result_params);
- if (scale_factor)
- *scale_factor = factor;
- }
- return result_params;
-}
-
-bool IsPrintPreviewEnabled() {
- return false;
-}
-
-bool IsPrintThrottlingDisabled() {
- return true;
-}
-
-} // namespace
-
-FrameReference::FrameReference(blink::WebLocalFrame* frame) {
- Reset(frame);
-}
-
-FrameReference::FrameReference() {
- Reset(NULL);
-}
-
-FrameReference::~FrameReference() {
-}
-
-void FrameReference::Reset(blink::WebLocalFrame* frame) {
- if (frame) {
- view_ = frame->view();
- frame_ = frame;
- } else {
- view_ = NULL;
- frame_ = NULL;
- }
-}
-
-blink::WebLocalFrame* FrameReference::GetFrame() {
- if (view_ == NULL || frame_ == NULL)
- return NULL;
- for (blink::WebFrame* frame = view_->mainFrame(); frame != NULL;
- frame = frame->traverseNext(false)) {
- if (frame == frame_)
- return frame_;
- }
- return NULL;
-}
-
-blink::WebView* FrameReference::view() {
- return view_;
-}
-
-// static - Not anonymous so that platform implementations can use it.
-void PrintWebViewHelper::PrintHeaderAndFooter(
- blink::WebCanvas* canvas,
- int page_number,
- int total_pages,
- float webkit_scale_factor,
- const PageSizeMargins& page_layout,
- const base::DictionaryValue& header_footer_info,
- const PrintMsg_Print_Params& params) {
-#if 0
- // TODO(sgurun) android_webview hack
- SkAutoCanvasRestore auto_restore(canvas, true);
- canvas->scale(1 / webkit_scale_factor, 1 / webkit_scale_factor);
-
- blink::WebSize page_size(page_layout.margin_left + page_layout.margin_right +
- page_layout.content_width,
- page_layout.margin_top + page_layout.margin_bottom +
- page_layout.content_height);
-
- blink::WebView* web_view = blink::WebView::create(NULL);
- web_view->settings()->setJavaScriptEnabled(true);
- blink::WebFrame* frame = blink::WebLocalFrame::create(NULL)
- web_view->setMainFrame(web_frame);
-
- base::StringValue html(
- ResourceBundle::GetSharedInstance().GetLocalizedString(
- IDR_PRINT_PREVIEW_PAGE));
- // Load page with script to avoid async operations.
- ExecuteScript(frame, kPageLoadScriptFormat, html);
-
- scoped_ptr<base::DictionaryValue> options(header_footer_info.DeepCopy());
- options->SetDouble("width", page_size.width);
- options->SetDouble("height", page_size.height);
- options->SetDouble("topMargin", page_layout.margin_top);
- options->SetDouble("bottomMargin", page_layout.margin_bottom);
- options->SetString("pageNumber",
- base::StringPrintf("%d/%d", page_number, total_pages));
-
- ExecuteScript(frame, kPageSetupScriptFormat, *options);
-
- blink::WebPrintParams webkit_params(page_size);
- webkit_params.printerDPI = GetDPI(&params);
-
- frame->printBegin(webkit_params, WebKit::WebNode(), NULL);
- frame->printPage(0, canvas);
- frame->printEnd();
-
- web_view->close();
- frame->close();
-#endif
-}
-
-// static - Not anonymous so that platform implementations can use it.
-float PrintWebViewHelper::RenderPageContent(blink::WebFrame* frame,
- int page_number,
- const gfx::Rect& canvas_area,
- const gfx::Rect& content_area,
- double scale_factor,
- blink::WebCanvas* canvas) {
- SkAutoCanvasRestore auto_restore(canvas, true);
- if (content_area != canvas_area) {
- canvas->translate((content_area.x() - canvas_area.x()) / scale_factor,
- (content_area.y() - canvas_area.y()) / scale_factor);
- SkRect clip_rect(
- SkRect::MakeXYWH(content_area.origin().x() / scale_factor,
- content_area.origin().y() / scale_factor,
- content_area.size().width() / scale_factor,
- content_area.size().height() / scale_factor));
- SkIRect clip_int_rect;
- clip_rect.roundOut(&clip_int_rect);
- SkRegion clip_region(clip_int_rect);
- canvas->setClipRegion(clip_region);
- }
- return frame->printPage(page_number, canvas);
-}
-
-// Class that calls the Begin and End print functions on the frame and changes
-// the size of the view temporarily to support full page printing..
-class PrepareFrameAndViewForPrint : public blink::WebViewClient,
- public blink::WebFrameClient {
- public:
- PrepareFrameAndViewForPrint(const PrintMsg_Print_Params& params,
- blink::WebLocalFrame* frame,
- const blink::WebNode& node,
- bool ignore_css_margins);
- virtual ~PrepareFrameAndViewForPrint();
-
- // Optional. Replaces |frame_| with selection if needed. Will call |on_ready|
- // when completed.
- void CopySelectionIfNeeded(const WebPreferences& preferences,
- const base::Closure& on_ready);
-
- // Prepares frame for printing.
- void StartPrinting();
-
- blink::WebLocalFrame* frame() {
- return frame_.GetFrame();
- }
-
- const blink::WebNode& node() const {
- return node_to_print_;
- }
-
- int GetExpectedPageCount() const {
- return expected_pages_count_;
- }
-
- gfx::Size GetPrintCanvasSize() const;
-
- void FinishPrinting();
-
- bool IsLoadingSelection() {
- // It's not selection if not |owns_web_view_|.
- return owns_web_view_ && frame() && frame()->isLoading();
- }
-
- // TODO(ojan): Remove this override and have this class use a non-null
- // layerTreeView.
- // blink::WebViewClient override:
- virtual bool allowsBrokenNullLayerTreeView() const;
-
- protected:
- // blink::WebViewClient override:
- virtual void didStopLoading();
-
- // blink::WebFrameClient override:
- virtual blink::WebFrame* createChildFrame(blink::WebLocalFrame* parent,
- const blink::WebString& name);
- virtual void frameDetached(blink::WebFrame* frame);
-
- private:
- void CallOnReady();
- void ResizeForPrinting();
- void RestoreSize();
- void CopySelection(const WebPreferences& preferences);
-
- base::WeakPtrFactory<PrepareFrameAndViewForPrint> weak_ptr_factory_;
-
- FrameReference frame_;
- blink::WebNode node_to_print_;
- bool owns_web_view_;
- blink::WebPrintParams web_print_params_;
- gfx::Size prev_view_size_;
- gfx::Size prev_scroll_offset_;
- int expected_pages_count_;
- base::Closure on_ready_;
- bool should_print_backgrounds_;
- bool should_print_selection_only_;
- bool is_printing_started_;
-
- DISALLOW_COPY_AND_ASSIGN(PrepareFrameAndViewForPrint);
-};
-
-PrepareFrameAndViewForPrint::PrepareFrameAndViewForPrint(
- const PrintMsg_Print_Params& params,
- blink::WebLocalFrame* frame,
- const blink::WebNode& node,
- bool ignore_css_margins)
- : weak_ptr_factory_(this),
- frame_(frame),
- node_to_print_(node),
- owns_web_view_(false),
- expected_pages_count_(0),
- should_print_backgrounds_(params.should_print_backgrounds),
- should_print_selection_only_(params.selection_only),
- is_printing_started_(false) {
- PrintMsg_Print_Params print_params = params;
- if (!should_print_selection_only_ ||
- !PrintingNodeOrPdfFrame(frame, node_to_print_)) {
- bool fit_to_page = ignore_css_margins &&
- print_params.print_scaling_option ==
- blink::WebPrintScalingOptionFitToPrintableArea;
- ComputeWebKitPrintParamsInDesiredDpi(params, &web_print_params_);
- frame->printBegin(web_print_params_, node_to_print_);
- print_params = CalculatePrintParamsForCss(frame, 0, print_params,
- ignore_css_margins, fit_to_page,
- NULL);
- frame->printEnd();
- }
- ComputeWebKitPrintParamsInDesiredDpi(print_params, &web_print_params_);
-}
-
-PrepareFrameAndViewForPrint::~PrepareFrameAndViewForPrint() {
- FinishPrinting();
-}
-
-void PrepareFrameAndViewForPrint::ResizeForPrinting() {
- // Layout page according to printer page size. Since WebKit shrinks the
- // size of the page automatically (from 125% to 200%) we trick it to
- // think the page is 125% larger so the size of the page is correct for
- // minimum (default) scaling.
- // This is important for sites that try to fill the page.
- gfx::Size print_layout_size(web_print_params_.printContentArea.width,
- web_print_params_.printContentArea.height);
- print_layout_size.set_height(
- static_cast<int>(static_cast<double>(print_layout_size.height()) * 1.25));
-
- if (!frame())
- return;
- blink::WebView* web_view = frame_.view();
- // Backup size and offset.
- if (blink::WebFrame* web_frame = web_view->mainFrame())
- prev_scroll_offset_ = web_frame->scrollOffset();
- prev_view_size_ = web_view->size();
-
- web_view->resize(print_layout_size);
-}
-
-
-void PrepareFrameAndViewForPrint::StartPrinting() {
- ResizeForPrinting();
- blink::WebView* web_view = frame_.view();
- web_view->settings()->setShouldPrintBackgrounds(should_print_backgrounds_);
- expected_pages_count_ =
- frame()->printBegin(web_print_params_, node_to_print_);
- is_printing_started_ = true;
-}
-
-void PrepareFrameAndViewForPrint::CopySelectionIfNeeded(
- const WebPreferences& preferences,
- const base::Closure& on_ready) {
- on_ready_ = on_ready;
- if (should_print_selection_only_)
- CopySelection(preferences);
- else
- didStopLoading();
-}
-
-void PrepareFrameAndViewForPrint::CopySelection(
- const WebPreferences& preferences) {
- ResizeForPrinting();
- std::string url_str = "data:text/html;charset=utf-8,";
- url_str.append(
- net::EscapeQueryParamValue(frame()->selectionAsMarkup().utf8(), false));
- RestoreSize();
- // Create a new WebView with the same settings as the current display one.
- // Except that we disable javascript (don't want any active content running
- // on the page).
- WebPreferences prefs = preferences;
- prefs.javascript_enabled = false;
- prefs.java_enabled = false;
-
- blink::WebView* web_view = blink::WebView::create(this);
- owns_web_view_ = true;
- content::RenderView::ApplyWebPreferences(prefs, web_view);
- web_view->setMainFrame(blink::WebLocalFrame::create(this));
- frame_.Reset(web_view->mainFrame()->toWebLocalFrame());
- node_to_print_.reset();
-
- // When loading is done this will call didStopLoading() and that will do the
- // actual printing.
- frame()->loadRequest(blink::WebURLRequest(GURL(url_str)));
-}
-
-bool PrepareFrameAndViewForPrint::allowsBrokenNullLayerTreeView() const {
- return true;
-}
-
-void PrepareFrameAndViewForPrint::didStopLoading() {
- DCHECK(!on_ready_.is_null());
- // Don't call callback here, because it can delete |this| and WebView that is
- // called didStopLoading.
- base::MessageLoop::current()->PostTask(
- FROM_HERE,
- base::Bind(&PrepareFrameAndViewForPrint::CallOnReady,
- weak_ptr_factory_.GetWeakPtr()));
-}
-
-blink::WebFrame* PrepareFrameAndViewForPrint::createChildFrame(
- blink::WebLocalFrame* parent,
- const blink::WebString& name) {
- blink::WebFrame* frame = blink::WebLocalFrame::create(this);
- parent->appendChild(frame);
- return frame;
-}
-
-void PrepareFrameAndViewForPrint::frameDetached(blink::WebFrame* frame) {
- if (frame->parent())
- frame->parent()->removeChild(frame);
- frame->close();
-}
-
-void PrepareFrameAndViewForPrint::CallOnReady() {
- return on_ready_.Run(); // Can delete |this|.
-}
-
-gfx::Size PrepareFrameAndViewForPrint::GetPrintCanvasSize() const {
- DCHECK(is_printing_started_);
- return gfx::Size(web_print_params_.printContentArea.width,
- web_print_params_.printContentArea.height);
-}
-
-void PrepareFrameAndViewForPrint::RestoreSize() {
- if (frame()) {
- blink::WebView* web_view = frame_.GetFrame()->view();
- web_view->resize(prev_view_size_);
- if (blink::WebFrame* web_frame = web_view->mainFrame())
- web_frame->setScrollOffset(prev_scroll_offset_);
- }
-}
-
-void PrepareFrameAndViewForPrint::FinishPrinting() {
- blink::WebLocalFrame* frame = frame_.GetFrame();
- if (frame) {
- blink::WebView* web_view = frame->view();
- if (is_printing_started_) {
- is_printing_started_ = false;
- frame->printEnd();
- if (!owns_web_view_) {
- web_view->settings()->setShouldPrintBackgrounds(false);
- RestoreSize();
- }
- }
- if (owns_web_view_) {
- DCHECK(!frame->isLoading());
- owns_web_view_ = false;
- web_view->close();
- }
- }
- frame_.Reset(NULL);
- on_ready_.Reset();
-}
-
-PrintWebViewHelper::PrintWebViewHelper(content::RenderView* render_view)
- : content::RenderViewObserver(render_view),
- content::RenderViewObserverTracker<PrintWebViewHelper>(render_view),
- reset_prep_frame_view_(false),
- is_preview_enabled_(IsPrintPreviewEnabled()),
- is_scripted_print_throttling_disabled_(IsPrintThrottlingDisabled()),
- is_print_ready_metafile_sent_(false),
- ignore_css_margins_(false),
- user_cancelled_scripted_print_count_(0),
- is_scripted_printing_blocked_(false),
- notify_browser_of_print_failure_(true),
- print_for_preview_(false),
- print_node_in_progress_(false),
- is_loading_(false),
- is_scripted_preview_delayed_(false),
- weak_ptr_factory_(this) {
- // TODO(sgurun) enable window.print() for webview crbug.com/322303
- SetScriptedPrintBlocked(true);
-}
-
-PrintWebViewHelper::~PrintWebViewHelper() {}
-
-bool PrintWebViewHelper::IsScriptInitiatedPrintAllowed(
- blink::WebFrame* frame, bool user_initiated) {
-#if defined(OS_ANDROID)
- return false;
-#endif // defined(OS_ANDROID)
- if (is_scripted_printing_blocked_)
- return false;
- // If preview is enabled, then the print dialog is tab modal, and the user
- // can always close the tab on a mis-behaving page (the system print dialog
- // is app modal). If the print was initiated through user action, don't
- // throttle. Or, if the command line flag to skip throttling has been set.
- if (!is_scripted_print_throttling_disabled_ &&
- !is_preview_enabled_ &&
- !user_initiated)
- return !IsScriptInitiatedPrintTooFrequent(frame);
- return true;
-}
-
-void PrintWebViewHelper::DidStartLoading() {
- is_loading_ = true;
-}
-
-void PrintWebViewHelper::DidStopLoading() {
- is_loading_ = false;
- ShowScriptedPrintPreview();
-}
-
-// Prints |frame| which called window.print().
-void PrintWebViewHelper::PrintPage(blink::WebLocalFrame* frame,
- bool user_initiated) {
- DCHECK(frame);
-
-#if !defined(OS_ANDROID)
- // TODO(sgurun) android_webview hack
- // Allow Prerendering to cancel this print request if necessary.
- if (prerender::PrerenderHelper::IsPrerendering(render_view())) {
- Send(new ChromeViewHostMsg_CancelPrerenderForPrinting(routing_id()));
- return;
- }
-#endif // !defined(OS_ANDROID)
-
- if (!IsScriptInitiatedPrintAllowed(frame, user_initiated))
- return;
- IncrementScriptedPrintCount();
-
- if (is_preview_enabled_) {
- print_preview_context_.InitWithFrame(frame);
- RequestPrintPreview(PRINT_PREVIEW_SCRIPTED);
- } else {
- Print(frame, blink::WebNode());
- }
-}
-
-bool PrintWebViewHelper::OnMessageReceived(const IPC::Message& message) {
- bool handled = true;
- IPC_BEGIN_MESSAGE_MAP(PrintWebViewHelper, message)
- IPC_MESSAGE_HANDLER(PrintMsg_PrintPages, OnPrintPages)
- IPC_MESSAGE_HANDLER(PrintMsg_PrintForSystemDialog, OnPrintForSystemDialog)
- IPC_MESSAGE_HANDLER(PrintMsg_InitiatePrintPreview, OnInitiatePrintPreview)
- IPC_MESSAGE_HANDLER(PrintMsg_PrintPreview, OnPrintPreview)
- IPC_MESSAGE_HANDLER(PrintMsg_PrintForPrintPreview, OnPrintForPrintPreview)
- IPC_MESSAGE_HANDLER(PrintMsg_PrintingDone, OnPrintingDone)
- IPC_MESSAGE_HANDLER(PrintMsg_ResetScriptedPrintCount,
- ResetScriptedPrintCount)
- IPC_MESSAGE_HANDLER(PrintMsg_SetScriptedPrintingBlocked,
- SetScriptedPrintBlocked)
- IPC_MESSAGE_UNHANDLED(handled = false)
- IPC_END_MESSAGE_MAP()
- return handled;
-}
-
-void PrintWebViewHelper::OnPrintForPrintPreview(
- const base::DictionaryValue& job_settings) {
- DCHECK(is_preview_enabled_);
- // If still not finished with earlier print request simply ignore.
- if (prep_frame_view_)
- return;
-
- if (!render_view()->GetWebView())
- return;
- blink::WebFrame* main_frame = render_view()->GetWebView()->mainFrame();
- if (!main_frame)
- return;
-
- blink::WebDocument document = main_frame->document();
- // <object> with id="pdf-viewer" is created in
- // chrome/browser/resources/print_preview/print_preview.js
- blink::WebElement pdf_element = document.getElementById("pdf-viewer");
- if (pdf_element.isNull()) {
- NOTREACHED();
- return;
- }
-
- // Set |print_for_preview_| flag and autoreset it to back to original
- // on return.
- base::AutoReset<bool> set_printing_flag(&print_for_preview_, true);
-
- blink::WebLocalFrame* pdf_frame = pdf_element.document().frame();
- if (!UpdatePrintSettings(pdf_frame, pdf_element, job_settings)) {
- LOG(ERROR) << "UpdatePrintSettings failed";
- DidFinishPrinting(FAIL_PRINT);
- return;
- }
-
- // Print page onto entire page not just printable area. Preview PDF already
- // has content in correct position taking into account page size and printable
- // area.
- // TODO(vitalybuka) : Make this consistent on all platform. This change
- // affects Windows only. On Linux and OSX RenderPagesForPrint does not use
- // printable_area. Also we can't change printable_area deeper inside
- // RenderPagesForPrint for Windows, because it's used also by native
- // printing and it expects real printable_area value.
- // See http://crbug.com/123408
- PrintMsg_Print_Params& print_params = print_pages_params_->params;
- print_params.printable_area = gfx::Rect(print_params.page_size);
-
- // Render Pages for printing.
- if (!RenderPagesForPrint(pdf_frame, pdf_element)) {
- LOG(ERROR) << "RenderPagesForPrint failed";
- DidFinishPrinting(FAIL_PRINT);
- }
-}
-
-bool PrintWebViewHelper::GetPrintFrame(blink::WebLocalFrame** frame) {
- DCHECK(frame);
- blink::WebView* webView = render_view()->GetWebView();
- DCHECK(webView);
- if (!webView)
- return false;
-
- // If the user has selected text in the currently focused frame we print
- // only that frame (this makes print selection work for multiple frames).
- blink::WebLocalFrame* focusedFrame =
- webView->focusedFrame()->toWebLocalFrame();
- *frame = focusedFrame->hasSelection()
- ? focusedFrame
- : webView->mainFrame()->toWebLocalFrame();
- return true;
-}
-
-void PrintWebViewHelper::OnPrintPages() {
- blink::WebLocalFrame* frame;
- if (GetPrintFrame(&frame))
- Print(frame, blink::WebNode());
-}
-
-void PrintWebViewHelper::OnPrintForSystemDialog() {
- blink::WebLocalFrame* frame = print_preview_context_.source_frame();
- if (!frame) {
- NOTREACHED();
- return;
- }
-
- Print(frame, print_preview_context_.source_node());
-}
-
-void PrintWebViewHelper::GetPageSizeAndContentAreaFromPageLayout(
- const PageSizeMargins& page_layout_in_points,
- gfx::Size* page_size,
- gfx::Rect* content_area) {
- *page_size = gfx::Size(
- page_layout_in_points.content_width +
- page_layout_in_points.margin_right +
- page_layout_in_points.margin_left,
- page_layout_in_points.content_height +
- page_layout_in_points.margin_top +
- page_layout_in_points.margin_bottom);
- *content_area = gfx::Rect(page_layout_in_points.margin_left,
- page_layout_in_points.margin_top,
- page_layout_in_points.content_width,
- page_layout_in_points.content_height);
-}
-
-void PrintWebViewHelper::UpdateFrameMarginsCssInfo(
- const base::DictionaryValue& settings) {
- int margins_type = 0;
- if (!settings.GetInteger(kSettingMarginsType, &margins_type))
- margins_type = DEFAULT_MARGINS;
- ignore_css_margins_ = (margins_type != DEFAULT_MARGINS);
-}
-
-bool PrintWebViewHelper::IsPrintToPdfRequested(
- const base::DictionaryValue& job_settings) {
- bool print_to_pdf = false;
- if (!job_settings.GetBoolean(kSettingPrintToPDF, &print_to_pdf))
- NOTREACHED();
- return print_to_pdf;
-}
-
-blink::WebPrintScalingOption PrintWebViewHelper::GetPrintScalingOption(
- bool source_is_html, const base::DictionaryValue& job_settings,
- const PrintMsg_Print_Params& params) {
- DCHECK(!print_for_preview_);
-
- if (params.print_to_pdf)
- return blink::WebPrintScalingOptionSourceSize;
-
- if (!source_is_html) {
- if (!FitToPageEnabled(job_settings))
- return blink::WebPrintScalingOptionNone;
-
- bool no_plugin_scaling =
- print_preview_context_.source_frame()->isPrintScalingDisabledForPlugin(
- print_preview_context_.source_node());
-
- if (params.is_first_request && no_plugin_scaling)
- return blink::WebPrintScalingOptionNone;
- }
- return blink::WebPrintScalingOptionFitToPrintableArea;
-}
-
-void PrintWebViewHelper::OnPrintPreview(const base::DictionaryValue& settings) {
- DCHECK(is_preview_enabled_);
- print_preview_context_.OnPrintPreview();
-
- UMA_HISTOGRAM_ENUMERATION("PrintPreview.PreviewEvent",
- PREVIEW_EVENT_REQUESTED, PREVIEW_EVENT_MAX);
-
- if (!UpdatePrintSettings(print_preview_context_.source_frame(),
- print_preview_context_.source_node(), settings)) {
- if (print_preview_context_.last_error() != PREVIEW_ERROR_BAD_SETTING) {
- Send(new PrintHostMsg_PrintPreviewInvalidPrinterSettings(
- routing_id(), print_pages_params_->params.document_cookie));
- notify_browser_of_print_failure_ = false; // Already sent.
- }
- DidFinishPrinting(FAIL_PREVIEW);
- return;
- }
-
- // If we are previewing a pdf and the print scaling is disabled, send a
- // message to browser.
- if (print_pages_params_->params.is_first_request &&
- !print_preview_context_.IsModifiable() &&
- print_preview_context_.source_frame()->isPrintScalingDisabledForPlugin(
- print_preview_context_.source_node())) {
- Send(new PrintHostMsg_PrintPreviewScalingDisabled(routing_id()));
- }
-
- is_print_ready_metafile_sent_ = false;
-
- // PDF printer device supports alpha blending.
- print_pages_params_->params.supports_alpha_blend = true;
-
- bool generate_draft_pages = false;
- if (!settings.GetBoolean(kSettingGenerateDraftData,
- &generate_draft_pages)) {
- NOTREACHED();
- }
- print_preview_context_.set_generate_draft_pages(generate_draft_pages);
-
- PrepareFrameForPreviewDocument();
-}
-
-void PrintWebViewHelper::PrepareFrameForPreviewDocument() {
- reset_prep_frame_view_ = false;
-
- if (!print_pages_params_ || CheckForCancel()) {
- DidFinishPrinting(FAIL_PREVIEW);
- return;
- }
-
- // Don't reset loading frame or WebKit will fail assert. Just retry when
- // current selection is loaded.
- if (prep_frame_view_ && prep_frame_view_->IsLoadingSelection()) {
- reset_prep_frame_view_ = true;
- return;
- }
-
- const PrintMsg_Print_Params& print_params = print_pages_params_->params;
- prep_frame_view_.reset(
- new PrepareFrameAndViewForPrint(print_params,
- print_preview_context_.source_frame(),
- print_preview_context_.source_node(),
- ignore_css_margins_));
- prep_frame_view_->CopySelectionIfNeeded(
- render_view()->GetWebkitPreferences(),
- base::Bind(&PrintWebViewHelper::OnFramePreparedForPreviewDocument,
- base::Unretained(this)));
-}
-
-void PrintWebViewHelper::OnFramePreparedForPreviewDocument() {
- if (reset_prep_frame_view_) {
- PrepareFrameForPreviewDocument();
- return;
- }
- DidFinishPrinting(CreatePreviewDocument() ? OK : FAIL_PREVIEW);
-}
-
-bool PrintWebViewHelper::CreatePreviewDocument() {
- if (!print_pages_params_ || CheckForCancel())
- return false;
-
- UMA_HISTOGRAM_ENUMERATION("PrintPreview.PreviewEvent",
- PREVIEW_EVENT_CREATE_DOCUMENT, PREVIEW_EVENT_MAX);
-
- const PrintMsg_Print_Params& print_params = print_pages_params_->params;
- const std::vector<int>& pages = print_pages_params_->pages;
-
- if (!print_preview_context_.CreatePreviewDocument(prep_frame_view_.release(),
- pages)) {
- return false;
- }
-
- PageSizeMargins default_page_layout;
- ComputePageLayoutInPointsForCss(print_preview_context_.prepared_frame(), 0,
- print_params, ignore_css_margins_, NULL,
- &default_page_layout);
-
- bool has_page_size_style = PrintingFrameHasPageSizeStyle(
- print_preview_context_.prepared_frame(),
- print_preview_context_.total_page_count());
- int dpi = GetDPI(&print_params);
-
- gfx::Rect printable_area_in_points(
- ConvertUnit(print_params.printable_area.x(), dpi, kPointsPerInch),
- ConvertUnit(print_params.printable_area.y(), dpi, kPointsPerInch),
- ConvertUnit(print_params.printable_area.width(), dpi, kPointsPerInch),
- ConvertUnit(print_params.printable_area.height(), dpi, kPointsPerInch));
-
- // Margins: Send default page layout to browser process.
- Send(new PrintHostMsg_DidGetDefaultPageLayout(routing_id(),
- default_page_layout,
- printable_area_in_points,
- has_page_size_style));
-
- PrintHostMsg_DidGetPreviewPageCount_Params params;
- params.page_count = print_preview_context_.total_page_count();
- params.is_modifiable = print_preview_context_.IsModifiable();
- params.document_cookie = print_params.document_cookie;
- params.preview_request_id = print_params.preview_request_id;
- params.clear_preview_data = print_preview_context_.generate_draft_pages();
- Send(new PrintHostMsg_DidGetPreviewPageCount(routing_id(), params));
- if (CheckForCancel())
- return false;
-
- while (!print_preview_context_.IsFinalPageRendered()) {
- int page_number = print_preview_context_.GetNextPageNumber();
- DCHECK_GE(page_number, 0);
- if (!RenderPreviewPage(page_number, print_params))
- return false;
-
- if (CheckForCancel())
- return false;
-
- // We must call PrepareFrameAndViewForPrint::FinishPrinting() (by way of
- // print_preview_context_.AllPagesRendered()) before calling
- // FinalizePrintReadyDocument() when printing a PDF because the plugin
- // code does not generate output until we call FinishPrinting(). We do not
- // generate draft pages for PDFs, so IsFinalPageRendered() and
- // IsLastPageOfPrintReadyMetafile() will be true in the same iteration of
- // the loop.
- if (print_preview_context_.IsFinalPageRendered())
- print_preview_context_.AllPagesRendered();
-
- if (print_preview_context_.IsLastPageOfPrintReadyMetafile()) {
- DCHECK(print_preview_context_.IsModifiable() ||
- print_preview_context_.IsFinalPageRendered());
- if (!FinalizePrintReadyDocument())
- return false;
- }
- }
- print_preview_context_.Finished();
- return true;
-}
-
-bool PrintWebViewHelper::FinalizePrintReadyDocument() {
- DCHECK(!is_print_ready_metafile_sent_);
- print_preview_context_.FinalizePrintReadyDocument();
-
- // Get the size of the resulting metafile.
- PdfMetafileSkia* metafile = print_preview_context_.metafile();
- uint32 buf_size = metafile->GetDataSize();
- DCHECK_GT(buf_size, 0u);
-
- PrintHostMsg_DidPreviewDocument_Params preview_params;
- preview_params.reuse_existing_data = false;
- preview_params.data_size = buf_size;
- preview_params.document_cookie = print_pages_params_->params.document_cookie;
- preview_params.expected_pages_count =
- print_preview_context_.total_page_count();
- preview_params.modifiable = print_preview_context_.IsModifiable();
- preview_params.preview_request_id =
- print_pages_params_->params.preview_request_id;
-
- // Ask the browser to create the shared memory for us.
- if (!CopyMetafileDataToSharedMem(metafile,
- &(preview_params.metafile_data_handle))) {
- LOG(ERROR) << "CopyMetafileDataToSharedMem failed";
- print_preview_context_.set_error(PREVIEW_ERROR_METAFILE_COPY_FAILED);
- return false;
- }
- is_print_ready_metafile_sent_ = true;
-
- Send(new PrintHostMsg_MetafileReadyForPrinting(routing_id(), preview_params));
- return true;
-}
-
-void PrintWebViewHelper::OnPrintingDone(bool success) {
- notify_browser_of_print_failure_ = false;
- if (!success)
- LOG(ERROR) << "Failure in OnPrintingDone";
- DidFinishPrinting(success ? OK : FAIL_PRINT);
-}
-
-void PrintWebViewHelper::SetScriptedPrintBlocked(bool blocked) {
- is_scripted_printing_blocked_ = blocked;
-}
-
-void PrintWebViewHelper::OnInitiatePrintPreview(bool selection_only) {
- DCHECK(is_preview_enabled_);
- blink::WebLocalFrame* frame = NULL;
- GetPrintFrame(&frame);
- DCHECK(frame);
- print_preview_context_.InitWithFrame(frame);
- RequestPrintPreview(selection_only ?
- PRINT_PREVIEW_USER_INITIATED_SELECTION :
- PRINT_PREVIEW_USER_INITIATED_ENTIRE_FRAME);
-}
-
-bool PrintWebViewHelper::IsPrintingEnabled() {
- bool result = false;
- Send(new PrintHostMsg_IsPrintingEnabled(routing_id(), &result));
- return result;
-}
-
-void PrintWebViewHelper::PrintNode(const blink::WebNode& node) {
- if (node.isNull() || !node.document().frame()) {
- // This can occur when the context menu refers to an invalid WebNode.
- // See http://crbug.com/100890#c17 for a repro case.
- return;
- }
-
- if (print_node_in_progress_) {
- // This can happen as a result of processing sync messages when printing
- // from ppapi plugins. It's a rare case, so its OK to just fail here.
- // See http://crbug.com/159165.
- return;
- }
-
- print_node_in_progress_ = true;
-
- // Make a copy of the node, in case RenderView::OnContextMenuClosed resets
- // its |context_menu_node_|.
- if (is_preview_enabled_) {
- print_preview_context_.InitWithNode(node);
- RequestPrintPreview(PRINT_PREVIEW_USER_INITIATED_CONTEXT_NODE);
- } else {
- blink::WebNode duplicate_node(node);
- Print(duplicate_node.document().frame(), duplicate_node);
- }
-
- print_node_in_progress_ = false;
-}
-
-void PrintWebViewHelper::Print(blink::WebLocalFrame* frame,
- const blink::WebNode& node) {
- // If still not finished with earlier print request simply ignore.
- if (prep_frame_view_)
- return;
-
- FrameReference frame_ref(frame);
-
- int expected_page_count = 0;
- if (!CalculateNumberOfPages(frame, node, &expected_page_count)) {
- DidFinishPrinting(FAIL_PRINT_INIT);
- return; // Failed to init print page settings.
- }
-
- // Some full screen plugins can say they don't want to print.
- if (!expected_page_count) {
- DidFinishPrinting(FAIL_PRINT);
- return;
- }
-
-#if !defined(OS_ANDROID)
- // TODO(sgurun) android_webview hack
- // Ask the browser to show UI to retrieve the final print settings.
- if (!GetPrintSettingsFromUser(frame_ref.GetFrame(), node,
- expected_page_count)) {
- DidFinishPrinting(OK); // Release resources and fail silently.
- return;
- }
-#endif // !defined(OS_ANDROID)
-
- // Render Pages for printing.
- if (!RenderPagesForPrint(frame_ref.GetFrame(), node)) {
- LOG(ERROR) << "RenderPagesForPrint failed";
- DidFinishPrinting(FAIL_PRINT);
- }
- ResetScriptedPrintCount();
-}
-
-void PrintWebViewHelper::DidFinishPrinting(PrintingResult result) {
- switch (result) {
- case OK:
- break;
-
- case FAIL_PRINT_INIT:
- DCHECK(!notify_browser_of_print_failure_);
- break;
-
- case FAIL_PRINT:
- if (notify_browser_of_print_failure_ && print_pages_params_.get()) {
- int cookie = print_pages_params_->params.document_cookie;
- Send(new PrintHostMsg_PrintingFailed(routing_id(), cookie));
- }
- break;
-
- case FAIL_PREVIEW:
- DCHECK(is_preview_enabled_);
- int cookie = print_pages_params_.get() ?
- print_pages_params_->params.document_cookie : 0;
- if (notify_browser_of_print_failure_) {
- LOG(ERROR) << "CreatePreviewDocument failed";
- Send(new PrintHostMsg_PrintPreviewFailed(routing_id(), cookie));
- } else {
- Send(new PrintHostMsg_PrintPreviewCancelled(routing_id(), cookie));
- }
- print_preview_context_.Failed(notify_browser_of_print_failure_);
- break;
- }
-
- prep_frame_view_.reset();
- print_pages_params_.reset();
- notify_browser_of_print_failure_ = true;
-}
-
-void PrintWebViewHelper::OnFramePreparedForPrintPages() {
- PrintPages();
- FinishFramePrinting();
-}
-
-void PrintWebViewHelper::PrintPages() {
- if (!prep_frame_view_) // Printing is already canceled or failed.
- return;
- prep_frame_view_->StartPrinting();
-
- int page_count = prep_frame_view_->GetExpectedPageCount();
- if (!page_count) {
- LOG(ERROR) << "Can't print 0 pages.";
- return DidFinishPrinting(FAIL_PRINT);
- }
-
- const PrintMsg_PrintPages_Params& params = *print_pages_params_;
- const PrintMsg_Print_Params& print_params = params.params;
-
-#if !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
- // TODO(vitalybuka): should be page_count or valid pages from params.pages.
- // See http://crbug.com/161576
- Send(new PrintHostMsg_DidGetPrintedPagesCount(routing_id(),
- print_params.document_cookie,
- page_count));
-#endif // !defined(OS_CHROMEOS)
-
- if (print_params.preview_ui_id < 0) {
- // Printing for system dialog.
- int printed_count = params.pages.empty() ? page_count : params.pages.size();
-#if !defined(OS_CHROMEOS)
- UMA_HISTOGRAM_COUNTS("PrintPreview.PageCount.SystemDialog", printed_count);
-#else
- UMA_HISTOGRAM_COUNTS("PrintPreview.PageCount.PrintToCloudPrintWebDialog",
- printed_count);
-#endif // !defined(OS_CHROMEOS)
- }
-
-
- if (!PrintPagesNative(prep_frame_view_->frame(), page_count,
- prep_frame_view_->GetPrintCanvasSize())) {
- LOG(ERROR) << "Printing failed.";
- return DidFinishPrinting(FAIL_PRINT);
- }
-}
-
-void PrintWebViewHelper::FinishFramePrinting() {
- prep_frame_view_.reset();
-}
-
-#if defined(OS_MACOSX) || defined(OS_WIN)
-bool PrintWebViewHelper::PrintPagesNative(blink::WebFrame* frame,
- int page_count,
- const gfx::Size& canvas_size) {
- const PrintMsg_PrintPages_Params& params = *print_pages_params_;
- const PrintMsg_Print_Params& print_params = params.params;
-
- PrintMsg_PrintPage_Params page_params;
- page_params.params = print_params;
- if (params.pages.empty()) {
- for (int i = 0; i < page_count; ++i) {
- page_params.page_number = i;
- PrintPageInternal(page_params, canvas_size, frame);
- }
- } else {
- for (size_t i = 0; i < params.pages.size(); ++i) {
- if (params.pages[i] >= page_count)
- break;
- page_params.page_number = params.pages[i];
- PrintPageInternal(page_params, canvas_size, frame);
- }
- }
- return true;
-}
-
-#endif // OS_MACOSX || OS_WIN
-
-// static - Not anonymous so that platform implementations can use it.
-void PrintWebViewHelper::ComputePageLayoutInPointsForCss(
- blink::WebFrame* frame,
- int page_index,
- const PrintMsg_Print_Params& page_params,
- bool ignore_css_margins,
- double* scale_factor,
- PageSizeMargins* page_layout_in_points) {
- PrintMsg_Print_Params params = CalculatePrintParamsForCss(
- frame, page_index, page_params, ignore_css_margins,
- page_params.print_scaling_option ==
- blink::WebPrintScalingOptionFitToPrintableArea,
- scale_factor);
- CalculatePageLayoutFromPrintParams(params, page_layout_in_points);
-}
-
-bool PrintWebViewHelper::InitPrintSettings(bool fit_to_paper_size) {
- PrintMsg_PrintPages_Params settings;
- Send(new PrintHostMsg_GetDefaultPrintSettings(routing_id(),
- &settings.params));
- // Check if the printer returned any settings, if the settings is empty, we
- // can safely assume there are no printer drivers configured. So we safely
- // terminate.
- bool result = true;
- if (!PrintMsg_Print_Params_IsValid(settings.params))
- result = false;
-
- if (result &&
- (settings.params.dpi < kMinDpi || settings.params.document_cookie == 0)) {
- // Invalid print page settings.
- NOTREACHED();
- result = false;
- }
-
- // Reset to default values.
- ignore_css_margins_ = false;
- settings.pages.clear();
-
- settings.params.print_scaling_option =
- blink::WebPrintScalingOptionSourceSize;
- if (fit_to_paper_size) {
- settings.params.print_scaling_option =
- blink::WebPrintScalingOptionFitToPrintableArea;
- }
-
- print_pages_params_.reset(new PrintMsg_PrintPages_Params(settings));
- return result;
-}
-
-bool PrintWebViewHelper::CalculateNumberOfPages(blink::WebLocalFrame* frame,
- const blink::WebNode& node,
- int* number_of_pages) {
- DCHECK(frame);
- bool fit_to_paper_size = !(PrintingNodeOrPdfFrame(frame, node));
- if (!InitPrintSettings(fit_to_paper_size)) {
- notify_browser_of_print_failure_ = false;
-#if !defined(OS_ANDROID)
- // TODO(sgurun) android_webview hack
- render_view()->RunModalAlertDialog(
- frame,
- l10n_util::GetStringUTF16(IDS_PRINT_INVALID_PRINTER_SETTINGS));
-#endif // !defined(OS_ANDROID)
- return false;
- }
-
- const PrintMsg_Print_Params& params = print_pages_params_->params;
- PrepareFrameAndViewForPrint prepare(params, frame, node, ignore_css_margins_);
- prepare.StartPrinting();
-
- Send(new PrintHostMsg_DidGetDocumentCookie(routing_id(),
- params.document_cookie));
- *number_of_pages = prepare.GetExpectedPageCount();
- return true;
-}
-
-bool PrintWebViewHelper::UpdatePrintSettings(
- blink::WebLocalFrame* frame,
- const blink::WebNode& node,
- const base::DictionaryValue& passed_job_settings) {
- DCHECK(is_preview_enabled_);
- const base::DictionaryValue* job_settings = &passed_job_settings;
- base::DictionaryValue modified_job_settings;
- if (job_settings->empty()) {
- if (!print_for_preview_)
- print_preview_context_.set_error(PREVIEW_ERROR_BAD_SETTING);
- return false;
- }
-
- bool source_is_html = true;
- if (print_for_preview_) {
- if (!job_settings->GetBoolean(kSettingPreviewModifiable, &source_is_html)) {
- NOTREACHED();
- }
- } else {
- source_is_html = !PrintingNodeOrPdfFrame(frame, node);
- }
-
- if (print_for_preview_ || !source_is_html) {
- modified_job_settings.MergeDictionary(job_settings);
- modified_job_settings.SetBoolean(kSettingHeaderFooterEnabled, false);
- modified_job_settings.SetInteger(kSettingMarginsType, NO_MARGINS);
- job_settings = &modified_job_settings;
- }
-
- // Send the cookie so that UpdatePrintSettings can reuse PrinterQuery when
- // possible.
- int cookie = print_pages_params_.get() ?
- print_pages_params_->params.document_cookie : 0;
- PrintMsg_PrintPages_Params settings;
- Send(new PrintHostMsg_UpdatePrintSettings(routing_id(), cookie, *job_settings,
- &settings));
- print_pages_params_.reset(new PrintMsg_PrintPages_Params(settings));
-
- if (!PrintMsg_Print_Params_IsValid(settings.params)) {
- if (!print_for_preview_) {
- print_preview_context_.set_error(PREVIEW_ERROR_INVALID_PRINTER_SETTINGS);
- } else {
-#if !defined(OS_ANDROID)
- // TODO(sgurun) android_webview hack
- // PrintForPrintPreview
- blink::WebFrame* print_frame = NULL;
- // This may not be the right frame, but the alert will be modal,
- // therefore it works well enough.
- GetPrintFrame(&print_frame);
- if (print_frame) {
- render_view()->RunModalAlertDialog(
- print_frame,
- l10n_util::GetStringUTF16(
- IDS_PRINT_INVALID_PRINTER_SETTINGS));
- }
-#endif // !defined(OS_ANDROID)
- }
- return false;
- }
-
- if (settings.params.dpi < kMinDpi || !settings.params.document_cookie) {
- print_preview_context_.set_error(PREVIEW_ERROR_UPDATING_PRINT_SETTINGS);
- return false;
- }
-
- if (!job_settings->GetInteger(kPreviewUIID, &settings.params.preview_ui_id)) {
- NOTREACHED();
- print_preview_context_.set_error(PREVIEW_ERROR_BAD_SETTING);
- return false;
- }
-
- if (!print_for_preview_) {
- // Validate expected print preview settings.
- if (!job_settings->GetInteger(kPreviewRequestID,
- &settings.params.preview_request_id) ||
- !job_settings->GetBoolean(kIsFirstRequest,
- &settings.params.is_first_request)) {
- NOTREACHED();
- print_preview_context_.set_error(PREVIEW_ERROR_BAD_SETTING);
- return false;
- }
-
- settings.params.print_to_pdf = IsPrintToPdfRequested(*job_settings);
- UpdateFrameMarginsCssInfo(*job_settings);
- settings.params.print_scaling_option = GetPrintScalingOption(
- source_is_html, *job_settings, settings.params);
-
- // Header/Footer: Set |header_footer_info_|.
- if (settings.params.display_header_footer) {
- header_footer_info_.reset(new base::DictionaryValue());
- header_footer_info_->SetDouble(kSettingHeaderFooterDate,
- base::Time::Now().ToJsTime());
- header_footer_info_->SetString(kSettingHeaderFooterURL,
- settings.params.url);
- header_footer_info_->SetString(kSettingHeaderFooterTitle,
- settings.params.title);
- }
- }
-
- print_pages_params_.reset(new PrintMsg_PrintPages_Params(settings));
- Send(new PrintHostMsg_DidGetDocumentCookie(routing_id(),
- settings.params.document_cookie));
-
- return true;
-}
-
-bool PrintWebViewHelper::GetPrintSettingsFromUser(blink::WebFrame* frame,
- const blink::WebNode& node,
- int expected_pages_count) {
- PrintHostMsg_ScriptedPrint_Params params;
- PrintMsg_PrintPages_Params print_settings;
-
- params.cookie = print_pages_params_->params.document_cookie;
- params.has_selection = frame->hasSelection();
- params.expected_pages_count = expected_pages_count;
- MarginType margin_type = DEFAULT_MARGINS;
- if (PrintingNodeOrPdfFrame(frame, node))
- margin_type = GetMarginsForPdf(frame, node);
- params.margin_type = margin_type;
-
- Send(new PrintHostMsg_DidShowPrintDialog(routing_id()));
-
- // PrintHostMsg_ScriptedPrint will reset print_scaling_option, so we save the
- // value before and restore it afterwards.
- blink::WebPrintScalingOption scaling_option =
- print_pages_params_->params.print_scaling_option;
-
- print_pages_params_.reset();
- IPC::SyncMessage* msg =
- new PrintHostMsg_ScriptedPrint(routing_id(), params, &print_settings);
- msg->EnableMessagePumping();
- Send(msg);
- print_pages_params_.reset(new PrintMsg_PrintPages_Params(print_settings));
-
- print_pages_params_->params.print_scaling_option = scaling_option;
- return (print_settings.params.dpi && print_settings.params.document_cookie);
-}
-
-bool PrintWebViewHelper::RenderPagesForPrint(blink::WebLocalFrame* frame,
- const blink::WebNode& node) {
- if (!frame || prep_frame_view_)
- return false;
- const PrintMsg_PrintPages_Params& params = *print_pages_params_;
- const PrintMsg_Print_Params& print_params = params.params;
- prep_frame_view_.reset(new PrepareFrameAndViewForPrint(
- print_params, frame, node, ignore_css_margins_));
- DCHECK(!print_pages_params_->params.selection_only ||
- print_pages_params_->pages.empty());
- prep_frame_view_->CopySelectionIfNeeded(
- render_view()->GetWebkitPreferences(),
- base::Bind(&PrintWebViewHelper::OnFramePreparedForPrintPages,
- base::Unretained(this)));
- return true;
-}
-
-#if defined(OS_POSIX)
-bool PrintWebViewHelper::CopyMetafileDataToSharedMem(
- PdfMetafileSkia* metafile,
- base::SharedMemoryHandle* shared_mem_handle) {
- uint32 buf_size = metafile->GetDataSize();
- scoped_ptr<base::SharedMemory> shared_buf(
- content::RenderThread::Get()->HostAllocateSharedMemoryBuffer(
- buf_size).release());
-
- if (shared_buf.get()) {
- if (shared_buf->Map(buf_size)) {
- metafile->GetData(shared_buf->memory(), buf_size);
- shared_buf->GiveToProcess(base::GetCurrentProcessHandle(),
- shared_mem_handle);
- return true;
- }
- }
- NOTREACHED();
- return false;
-}
-#endif // defined(OS_POSIX)
-
-bool PrintWebViewHelper::IsScriptInitiatedPrintTooFrequent(
- blink::WebFrame* frame) {
- const int kMinSecondsToIgnoreJavascriptInitiatedPrint = 2;
- const int kMaxSecondsToIgnoreJavascriptInitiatedPrint = 32;
- bool too_frequent = false;
-
- // Check if there is script repeatedly trying to print and ignore it if too
- // frequent. The first 3 times, we use a constant wait time, but if this
- // gets excessive, we switch to exponential wait time. So for a page that
- // calls print() in a loop the user will need to cancel the print dialog
- // after: [2, 2, 2, 4, 8, 16, 32, 32, ...] seconds.
- // This gives the user time to navigate from the page.
- if (user_cancelled_scripted_print_count_ > 0) {
- base::TimeDelta diff = base::Time::Now() - last_cancelled_script_print_;
- int min_wait_seconds = kMinSecondsToIgnoreJavascriptInitiatedPrint;
- if (user_cancelled_scripted_print_count_ > 3) {
- min_wait_seconds = std::min(
- kMinSecondsToIgnoreJavascriptInitiatedPrint <<
- (user_cancelled_scripted_print_count_ - 3),
- kMaxSecondsToIgnoreJavascriptInitiatedPrint);
- }
- if (diff.InSeconds() < min_wait_seconds) {
- too_frequent = true;
- }
- }
-
- if (!too_frequent)
- return false;
-
- blink::WebString message(
- blink::WebString::fromUTF8("Ignoring too frequent calls to print()."));
- frame->addMessageToConsole(
- blink::WebConsoleMessage(
- blink::WebConsoleMessage::LevelWarning, message));
- return true;
-}
-
-void PrintWebViewHelper::ResetScriptedPrintCount() {
- // Reset cancel counter on successful print.
- user_cancelled_scripted_print_count_ = 0;
-}
-
-void PrintWebViewHelper::IncrementScriptedPrintCount() {
- ++user_cancelled_scripted_print_count_;
- last_cancelled_script_print_ = base::Time::Now();
-}
-
-void PrintWebViewHelper::ShowScriptedPrintPreview() {
- if (is_scripted_preview_delayed_) {
- is_scripted_preview_delayed_ = false;
- Send(new PrintHostMsg_ShowScriptedPrintPreview(routing_id(),
- print_preview_context_.IsModifiable()));
- }
-}
-
-void PrintWebViewHelper::RequestPrintPreview(PrintPreviewRequestType type) {
- const bool is_modifiable = print_preview_context_.IsModifiable();
- const bool has_selection = print_preview_context_.HasSelection();
- PrintHostMsg_RequestPrintPreview_Params params;
- params.is_modifiable = is_modifiable;
- params.has_selection = has_selection;
- switch (type) {
- case PRINT_PREVIEW_SCRIPTED: {
- // Shows scripted print preview in two stages.
- // 1. PrintHostMsg_SetupScriptedPrintPreview blocks this call and JS by
- // pumping messages here.
- // 2. PrintHostMsg_ShowScriptedPrintPreview shows preview once the
- // document has been loaded.
- is_scripted_preview_delayed_ = true;
- if (is_loading_ && GetPlugin(print_preview_context_.source_frame())) {
- // Wait for DidStopLoading. Plugins may not know the correct
- // |is_modifiable| value until they are fully loaded, which occurs when
- // DidStopLoading() is called. Defer showing the preview until then.
- } else {
- base::MessageLoop::current()->PostTask(
- FROM_HERE,
- base::Bind(&PrintWebViewHelper::ShowScriptedPrintPreview,
- weak_ptr_factory_.GetWeakPtr()));
- }
- IPC::SyncMessage* msg =
- new PrintHostMsg_SetupScriptedPrintPreview(routing_id());
- msg->EnableMessagePumping();
- Send(msg);
- is_scripted_preview_delayed_ = false;
- return;
- }
- case PRINT_PREVIEW_USER_INITIATED_ENTIRE_FRAME: {
- break;
- }
- case PRINT_PREVIEW_USER_INITIATED_SELECTION: {
- DCHECK(has_selection);
- params.selection_only = has_selection;
- break;
- }
- case PRINT_PREVIEW_USER_INITIATED_CONTEXT_NODE: {
- params.webnode_only = true;
- break;
- }
- default: {
- NOTREACHED();
- return;
- }
- }
- Send(new PrintHostMsg_RequestPrintPreview(routing_id(), params));
-}
-
-bool PrintWebViewHelper::CheckForCancel() {
- const PrintMsg_Print_Params& print_params = print_pages_params_->params;
- bool cancel = false;
- Send(new PrintHostMsg_CheckForCancel(routing_id(),
- print_params.preview_ui_id,
- print_params.preview_request_id,
- &cancel));
- if (cancel)
- notify_browser_of_print_failure_ = false;
- return cancel;
-}
-
-bool PrintWebViewHelper::PreviewPageRendered(int page_number,
- PdfMetafileSkia* metafile) {
- DCHECK_GE(page_number, FIRST_PAGE_INDEX);
-
- // For non-modifiable files, |metafile| should be NULL, so do not bother
- // sending a message. If we don't generate draft metafiles, |metafile| is
- // NULL.
- if (!print_preview_context_.IsModifiable() ||
- !print_preview_context_.generate_draft_pages()) {
- DCHECK(!metafile);
- return true;
- }
-
- if (!metafile) {
- NOTREACHED();
- print_preview_context_.set_error(
- PREVIEW_ERROR_PAGE_RENDERED_WITHOUT_METAFILE);
- return false;
- }
-
- PrintHostMsg_DidPreviewPage_Params preview_page_params;
- // Get the size of the resulting metafile.
- uint32 buf_size = metafile->GetDataSize();
- DCHECK_GT(buf_size, 0u);
- if (!CopyMetafileDataToSharedMem(
- metafile, &(preview_page_params.metafile_data_handle))) {
- LOG(ERROR) << "CopyMetafileDataToSharedMem failed";
- print_preview_context_.set_error(PREVIEW_ERROR_METAFILE_COPY_FAILED);
- return false;
- }
- preview_page_params.data_size = buf_size;
- preview_page_params.page_number = page_number;
- preview_page_params.preview_request_id =
- print_pages_params_->params.preview_request_id;
-
- Send(new PrintHostMsg_DidPreviewPage(routing_id(), preview_page_params));
- return true;
-}
-
-PrintWebViewHelper::PrintPreviewContext::PrintPreviewContext()
- : total_page_count_(0),
- current_page_index_(0),
- generate_draft_pages_(true),
- print_ready_metafile_page_count_(0),
- error_(PREVIEW_ERROR_NONE),
- state_(UNINITIALIZED) {
-}
-
-PrintWebViewHelper::PrintPreviewContext::~PrintPreviewContext() {
-}
-
-void PrintWebViewHelper::PrintPreviewContext::InitWithFrame(
- blink::WebLocalFrame* web_frame) {
- DCHECK(web_frame);
- DCHECK(!IsRendering());
- state_ = INITIALIZED;
- source_frame_.Reset(web_frame);
- source_node_.reset();
-}
-
-void PrintWebViewHelper::PrintPreviewContext::InitWithNode(
- const blink::WebNode& web_node) {
- DCHECK(!web_node.isNull());
- DCHECK(web_node.document().frame());
- DCHECK(!IsRendering());
- state_ = INITIALIZED;
- source_frame_.Reset(web_node.document().frame());
- source_node_ = web_node;
-}
-
-void PrintWebViewHelper::PrintPreviewContext::OnPrintPreview() {
- DCHECK_EQ(INITIALIZED, state_);
- ClearContext();
-}
-
-bool PrintWebViewHelper::PrintPreviewContext::CreatePreviewDocument(
- PrepareFrameAndViewForPrint* prepared_frame,
- const std::vector<int>& pages) {
- DCHECK_EQ(INITIALIZED, state_);
- state_ = RENDERING;
-
- // Need to make sure old object gets destroyed first.
- prep_frame_view_.reset(prepared_frame);
- prep_frame_view_->StartPrinting();
-
- total_page_count_ = prep_frame_view_->GetExpectedPageCount();
- if (total_page_count_ == 0) {
- LOG(ERROR) << "CreatePreviewDocument got 0 page count";
- set_error(PREVIEW_ERROR_ZERO_PAGES);
- return false;
- }
-
- metafile_.reset(new PdfMetafileSkia);
- if (!metafile_->Init()) {
- set_error(PREVIEW_ERROR_METAFILE_INIT_FAILED);
- LOG(ERROR) << "PdfMetafileSkia Init failed";
- return false;
- }
-
- current_page_index_ = 0;
- pages_to_render_ = pages;
- // Sort and make unique.
- std::sort(pages_to_render_.begin(), pages_to_render_.end());
- pages_to_render_.resize(std::unique(pages_to_render_.begin(),
- pages_to_render_.end()) -
- pages_to_render_.begin());
- // Remove invalid pages.
- pages_to_render_.resize(std::lower_bound(pages_to_render_.begin(),
- pages_to_render_.end(),
- total_page_count_) -
- pages_to_render_.begin());
- print_ready_metafile_page_count_ = pages_to_render_.size();
- if (pages_to_render_.empty()) {
- print_ready_metafile_page_count_ = total_page_count_;
- // Render all pages.
- for (int i = 0; i < total_page_count_; ++i)
- pages_to_render_.push_back(i);
- } else if (generate_draft_pages_) {
- int pages_index = 0;
- for (int i = 0; i < total_page_count_; ++i) {
- if (pages_index < print_ready_metafile_page_count_ &&
- i == pages_to_render_[pages_index]) {
- pages_index++;
- continue;
- }
- pages_to_render_.push_back(i);
- }
- }
-
- document_render_time_ = base::TimeDelta();
- begin_time_ = base::TimeTicks::Now();
-
- return true;
-}
-
-void PrintWebViewHelper::PrintPreviewContext::RenderedPreviewPage(
- const base::TimeDelta& page_time) {
- DCHECK_EQ(RENDERING, state_);
- document_render_time_ += page_time;
- UMA_HISTOGRAM_TIMES("PrintPreview.RenderPDFPageTime", page_time);
-}
-
-void PrintWebViewHelper::PrintPreviewContext::AllPagesRendered() {
- DCHECK_EQ(RENDERING, state_);
- state_ = DONE;
- prep_frame_view_->FinishPrinting();
-}
-
-void PrintWebViewHelper::PrintPreviewContext::FinalizePrintReadyDocument() {
- DCHECK(IsRendering());
-
- base::TimeTicks begin_time = base::TimeTicks::Now();
- metafile_->FinishDocument();
-
- if (print_ready_metafile_page_count_ <= 0) {
- NOTREACHED();
- return;
- }
-
- UMA_HISTOGRAM_MEDIUM_TIMES("PrintPreview.RenderToPDFTime",
- document_render_time_);
- base::TimeDelta total_time = (base::TimeTicks::Now() - begin_time) +
- document_render_time_;
- UMA_HISTOGRAM_MEDIUM_TIMES("PrintPreview.RenderAndGeneratePDFTime",
- total_time);
- UMA_HISTOGRAM_MEDIUM_TIMES("PrintPreview.RenderAndGeneratePDFTimeAvgPerPage",
- total_time / pages_to_render_.size());
-}
-
-void PrintWebViewHelper::PrintPreviewContext::Finished() {
- DCHECK_EQ(DONE, state_);
- state_ = INITIALIZED;
- ClearContext();
-}
-
-void PrintWebViewHelper::PrintPreviewContext::Failed(bool report_error) {
- DCHECK(state_ == INITIALIZED || state_ == RENDERING);
- state_ = INITIALIZED;
- if (report_error) {
- DCHECK_NE(PREVIEW_ERROR_NONE, error_);
- UMA_HISTOGRAM_ENUMERATION("PrintPreview.RendererError", error_,
- PREVIEW_ERROR_LAST_ENUM);
- }
- ClearContext();
-}
-
-int PrintWebViewHelper::PrintPreviewContext::GetNextPageNumber() {
- DCHECK_EQ(RENDERING, state_);
- if (IsFinalPageRendered())
- return -1;
- return pages_to_render_[current_page_index_++];
-}
-
-bool PrintWebViewHelper::PrintPreviewContext::IsRendering() const {
- return state_ == RENDERING || state_ == DONE;
-}
-
-bool PrintWebViewHelper::PrintPreviewContext::IsModifiable() {
- // The only kind of node we can print right now is a PDF node.
- return !PrintingNodeOrPdfFrame(source_frame(), source_node_);
-}
-
-bool PrintWebViewHelper::PrintPreviewContext::HasSelection() {
- return IsModifiable() && source_frame()->hasSelection();
-}
-
-bool PrintWebViewHelper::PrintPreviewContext::IsLastPageOfPrintReadyMetafile()
- const {
- DCHECK(IsRendering());
- return current_page_index_ == print_ready_metafile_page_count_;
-}
-
-bool PrintWebViewHelper::PrintPreviewContext::IsFinalPageRendered() const {
- DCHECK(IsRendering());
- return static_cast<size_t>(current_page_index_) == pages_to_render_.size();
-}
-
-void PrintWebViewHelper::PrintPreviewContext::set_generate_draft_pages(
- bool generate_draft_pages) {
- DCHECK_EQ(INITIALIZED, state_);
- generate_draft_pages_ = generate_draft_pages;
-}
-
-void PrintWebViewHelper::PrintPreviewContext::set_error(
- enum PrintPreviewErrorBuckets error) {
- error_ = error;
-}
-
-blink::WebLocalFrame* PrintWebViewHelper::PrintPreviewContext::source_frame() {
- DCHECK_NE(UNINITIALIZED, state_);
- return source_frame_.GetFrame();
-}
-
-const blink::WebNode&
- PrintWebViewHelper::PrintPreviewContext::source_node() const {
- DCHECK_NE(UNINITIALIZED, state_);
- return source_node_;
-}
-
-blink::WebLocalFrame*
-PrintWebViewHelper::PrintPreviewContext::prepared_frame() {
- DCHECK_NE(UNINITIALIZED, state_);
- return prep_frame_view_->frame();
-}
-
-const blink::WebNode&
- PrintWebViewHelper::PrintPreviewContext::prepared_node() const {
- DCHECK_NE(UNINITIALIZED, state_);
- return prep_frame_view_->node();
-}
-
-int PrintWebViewHelper::PrintPreviewContext::total_page_count() const {
- DCHECK_NE(UNINITIALIZED, state_);
- return total_page_count_;
-}
-
-bool PrintWebViewHelper::PrintPreviewContext::generate_draft_pages() const {
- return generate_draft_pages_;
-}
-
-PdfMetafileSkia* PrintWebViewHelper::PrintPreviewContext::metafile() {
- DCHECK(IsRendering());
- return metafile_.get();
-}
-
-int PrintWebViewHelper::PrintPreviewContext::last_error() const {
- return error_;
-}
-
-gfx::Size PrintWebViewHelper::PrintPreviewContext::GetPrintCanvasSize() const {
- DCHECK(IsRendering());
- return prep_frame_view_->GetPrintCanvasSize();
-}
-
-void PrintWebViewHelper::PrintPreviewContext::ClearContext() {
- prep_frame_view_.reset();
- metafile_.reset();
- pages_to_render_.clear();
- error_ = PREVIEW_ERROR_NONE;
-}
-
-} // namespace printing
« no previous file with comments | « android_webview/renderer/print_web_view_helper.h ('k') | android_webview/renderer/print_web_view_helper_android.cc » ('j') | components/components.gyp » ('J')

Powered by Google App Engine
This is Rietveld 408576698