Roll skia to 8cc209111876b7c78b5ec577c9221d8ed5e21024

skia/ext/bitmap_platform_device_win.cc

Index: skia/ext/bitmap_platform_device_win.cc
diff --git a/skia/ext/bitmap_platform_device_win.cc b/skia/ext/bitmap_platform_device_win.cc
deleted file mode 100644
index 63108209abc313b305256319246a06fa7d03424c..0000000000000000000000000000000000000000
--- a/skia/ext/bitmap_platform_device_win.cc
+++ /dev/null
@@ -1,328 +0,0 @@
-// 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 <windows.h>
-#include <psapi.h>
-
-#include "base/debug/gdi_debug_util_win.h"
-#include "base/logging.h"
-#include "skia/ext/bitmap_platform_device_win.h"
-#include "skia/ext/platform_canvas.h"
-#include "third_party/skia/include/core/SkMatrix.h"
-#include "third_party/skia/include/core/SkRefCnt.h"
-#include "third_party/skia/include/core/SkRegion.h"
-#include "third_party/skia/include/core/SkUtils.h"
-
-namespace {
-
-HBITMAP CreateHBitmap(int width, int height, bool is_opaque,
-                             HANDLE shared_section, void** data) {
-  // CreateDIBSection appears to get unhappy if we create an empty bitmap, so
-  // just create a minimal bitmap
-  if ((width == 0) || (height == 0)) {
-    width = 1;
-    height = 1;
-  }
-
-  BITMAPINFOHEADER hdr = {0};
-  hdr.biSize = sizeof(BITMAPINFOHEADER);
-  hdr.biWidth = width;
-  hdr.biHeight = -height;  // minus means top-down bitmap
-  hdr.biPlanes = 1;
-  hdr.biBitCount = 32;
-  hdr.biCompression = BI_RGB;  // no compression
-  hdr.biSizeImage = 0;
-  hdr.biXPelsPerMeter = 1;
-  hdr.biYPelsPerMeter = 1;
-  hdr.biClrUsed = 0;
-  hdr.biClrImportant = 0;
-
-  HBITMAP hbitmap = CreateDIBSection(NULL, reinterpret_cast<BITMAPINFO*>(&hdr),
-                                     0, data, shared_section, 0);
-
-#if !defined(_WIN64)
-  // If this call fails, we're gonna crash hard. Try to get some useful
-  // information out before we crash for post-mortem analysis.
-  if (!hbitmap)
-    base::debug::GDIBitmapAllocFailure(&hdr, shared_section);
-#endif
-
-  return hbitmap;
-}
-
-}  // namespace
-
-namespace skia {
-
-void DrawToNativeContext(SkCanvas* canvas, HDC hdc, int x, int y,
-                         const RECT* src_rect) {
-  PlatformDevice* platform_device = GetPlatformDevice(GetTopDevice(*canvas));
-  if (platform_device)
-    platform_device->DrawToHDC(hdc, x, y, src_rect);
-}
-
-void PlatformDevice::DrawToHDC(HDC, int x, int y, const RECT* src_rect) {}
-
-HDC BitmapPlatformDevice::GetBitmapDC() {
-  if (!hdc_) {
-    hdc_ = CreateCompatibleDC(NULL);
-    InitializeDC(hdc_);
-    old_hbitmap_ = static_cast<HBITMAP>(SelectObject(hdc_, hbitmap_));
-  }
-
-  LoadConfig();
-  return hdc_;
-}
-
-void BitmapPlatformDevice::ReleaseBitmapDC() {
-  SkASSERT(hdc_);
-  SelectObject(hdc_, old_hbitmap_);
-  DeleteDC(hdc_);
-  hdc_ = NULL;
-  old_hbitmap_ = NULL;
-}
-
-bool BitmapPlatformDevice::IsBitmapDCCreated()
-    const {
-  return hdc_ != NULL;
-}
-
-
-void BitmapPlatformDevice::SetMatrixClip(
-    const SkMatrix& transform,
-    const SkRegion& region) {
-  transform_ = transform;
-  clip_region_ = region;
-  config_dirty_ = true;
-}
-
-void BitmapPlatformDevice::LoadConfig() {
-  if (!config_dirty_ || !hdc_)
-    return;  // Nothing to do.
-  config_dirty_ = false;
-
-  // Transform.
-  LoadTransformToDC(hdc_, transform_);
-  LoadClippingRegionToDC(hdc_, clip_region_, transform_);
-}
-
-static void DeleteHBitmapCallback(void* addr, void* context) {
-  DeleteObject(static_cast<HBITMAP>(context));
-}
-
-static bool InstallHBitmapPixels(SkBitmap* bitmap, int width, int height,
-                                 bool is_opaque, void* data, HBITMAP hbitmap) {
-  const SkAlphaType at = is_opaque ? kOpaque_SkAlphaType : kPremul_SkAlphaType;
-  const SkImageInfo info = SkImageInfo::MakeN32(width, height, at);
-  const size_t rowBytes = info.minRowBytes();
-  SkColorTable* color_table = NULL;
-  return bitmap->installPixels(info, data, rowBytes, color_table,
-                               DeleteHBitmapCallback, hbitmap);
-}
-
-// We use this static factory function instead of the regular constructor so
-// that we can create the pixel data before calling the constructor. This is
-// required so that we can call the base class' constructor with the pixel
-// data.
-BitmapPlatformDevice* BitmapPlatformDevice::Create(
-    int width,
-    int height,
-    bool is_opaque,
-    HANDLE shared_section,
-    bool do_clear) {
-
-  void* data;
-  HBITMAP hbitmap = CreateHBitmap(width, height, is_opaque, shared_section,
-                                  &data);
-  if (!hbitmap)
-    return NULL;
-
-  SkBitmap bitmap;
-  if (!InstallHBitmapPixels(&bitmap, width, height, is_opaque, data, hbitmap))
-    return NULL;
-
-  if (do_clear)
-    bitmap.eraseColor(0);
-
-#ifndef NDEBUG
-  // If we were given data, then don't clobber it!
-  if (!shared_section && is_opaque)
-    // To aid in finding bugs, we set the background color to something
-    // obviously wrong so it will be noticable when it is not cleared
-    bitmap.eraseARGB(255, 0, 255, 128);  // bright bluish green
-#endif
-
-  // The device object will take ownership of the HBITMAP. The initial refcount
-  // of the data object will be 1, which is what the constructor expects.
-  return new BitmapPlatformDevice(hbitmap, bitmap);
-}
-
-// static
-BitmapPlatformDevice* BitmapPlatformDevice::Create(int width, int height,
-                                                   bool is_opaque) {
-  const HANDLE shared_section = NULL;
-  const bool do_clear = false;
-  return Create(width, height, is_opaque, shared_section, do_clear);
-}
-
-// The device will own the HBITMAP, which corresponds to also owning the pixel
-// data. Therefore, we do not transfer ownership to the SkBitmapDevice's bitmap.
-BitmapPlatformDevice::BitmapPlatformDevice(
-    HBITMAP hbitmap,
-    const SkBitmap& bitmap)
-    : SkBitmapDevice(bitmap),
-      hbitmap_(hbitmap),
-      old_hbitmap_(NULL),
-      hdc_(NULL),
-      config_dirty_(true),  // Want to load the config next time.
-      transform_(SkMatrix::I()) {
-  // The data object is already ref'ed for us by create().
-  SkDEBUGCODE(begin_paint_count_ = 0);
-  SetPlatformDevice(this, this);
-  // Initialize the clip region to the entire bitmap.
-  BITMAP bitmap_data;
-  if (GetObject(hbitmap_, sizeof(BITMAP), &bitmap_data)) {
-    SkIRect rect;
-    rect.set(0, 0, bitmap_data.bmWidth, bitmap_data.bmHeight);
-    clip_region_ = SkRegion(rect);
-  }
-}
-
-BitmapPlatformDevice::~BitmapPlatformDevice() {
-  SkASSERT(begin_paint_count_ == 0);
-  if (hdc_)
-    ReleaseBitmapDC();
-}
-
-HDC BitmapPlatformDevice::BeginPlatformPaint() {
-  SkDEBUGCODE(begin_paint_count_++);
-  return GetBitmapDC();
-}
-
-void BitmapPlatformDevice::EndPlatformPaint() {
-  SkASSERT(begin_paint_count_--);
-  PlatformDevice::EndPlatformPaint();
-}
-
-void BitmapPlatformDevice::setMatrixClip(const SkMatrix& transform,
-                                         const SkRegion& region,
-                                         const SkClipStack&) {
-  SetMatrixClip(transform, region);
-}
-
-void BitmapPlatformDevice::DrawToHDC(HDC dc, int x, int y,
-                                     const RECT* src_rect) {
-  bool created_dc = !IsBitmapDCCreated();
-  HDC source_dc = BeginPlatformPaint();
-
-  RECT temp_rect;
-  if (!src_rect) {
-    temp_rect.left = 0;
-    temp_rect.right = width();
-    temp_rect.top = 0;
-    temp_rect.bottom = height();
-    src_rect = &temp_rect;
-  }
-
-  int copy_width = src_rect->right - src_rect->left;
-  int copy_height = src_rect->bottom - src_rect->top;
-
-  // We need to reset the translation for our bitmap or (0,0) won't be in the
-  // upper left anymore
-  SkMatrix identity;
-  identity.reset();
-
-  LoadTransformToDC(source_dc, identity);
-  if (isOpaque()) {
-    BitBlt(dc,
-           x,
-           y,
-           copy_width,
-           copy_height,
-           source_dc,
-           src_rect->left,
-           src_rect->top,
-           SRCCOPY);
-  } else {
-    SkASSERT(copy_width != 0 && copy_height != 0);
-    BLENDFUNCTION blend_function = {AC_SRC_OVER, 0, 255, AC_SRC_ALPHA};
-    GdiAlphaBlend(dc,
-                  x,
-                  y,
-                  copy_width,
-                  copy_height,
-                  source_dc,
-                  src_rect->left,
-                  src_rect->top,
-                  copy_width,
-                  copy_height,
-                  blend_function);
-  }
-  LoadTransformToDC(source_dc, transform_);
-
-  EndPlatformPaint();
-  if (created_dc)
-    ReleaseBitmapDC();
-}
-
-const SkBitmap& BitmapPlatformDevice::onAccessBitmap() {
-  // FIXME(brettw) OPTIMIZATION: We should only flush if we know a GDI
-  // operation has occurred on our DC.
-  if (IsBitmapDCCreated())
-    GdiFlush();
-  return SkBitmapDevice::onAccessBitmap();
-}
-
-SkBaseDevice* BitmapPlatformDevice::onCreateDevice(const CreateInfo& cinfo,
-                                                   const SkPaint*) {
-  const SkImageInfo& info = cinfo.fInfo;
-  const bool do_clear = !info.isOpaque();
-  SkASSERT(info.colorType() == kN32_SkColorType);
-  return Create(info.width(), info.height(), info.isOpaque(), NULL, do_clear);
-}
-
-// PlatformCanvas impl
-
-SkCanvas* CreatePlatformCanvas(int width,
-                               int height,
-                               bool is_opaque,
-                               HANDLE shared_section,
-                               OnFailureType failureType) {
-  skia::RefPtr<SkBaseDevice> dev = skia::AdoptRef(
-      BitmapPlatformDevice::Create(width, height, is_opaque, shared_section));
-  return CreateCanvas(dev, failureType);
-}
-
-// Port of PlatformBitmap to win
-
-PlatformBitmap::~PlatformBitmap() {
-  if (surface_) {
-    if (platform_extra_)
-      SelectObject(surface_, reinterpret_cast<HGDIOBJ>(platform_extra_));
-    DeleteDC(surface_);
-  }
-}
-
-bool PlatformBitmap::Allocate(int width, int height, bool is_opaque) {
-  void* data;
-  HBITMAP hbitmap = CreateHBitmap(width, height, is_opaque, 0, &data);
-  if (!hbitmap)
-    return false;
-
-  surface_ = CreateCompatibleDC(NULL);
-  InitializeDC(surface_);
-  // When the memory DC is created, its display surface is exactly one
-  // monochrome pixel wide and one monochrome pixel high. Save this object
-  // off, we'll restore it just before deleting the memory DC.
-  HGDIOBJ stock_bitmap = SelectObject(surface_, hbitmap);
-  platform_extra_ = reinterpret_cast<intptr_t>(stock_bitmap);
-
-  if (!InstallHBitmapPixels(&bitmap_, width, height, is_opaque, data, hbitmap))
-    return false;
-  bitmap_.lockPixels();
-
-  return true;
-}
-
-}  // namespace skia