cc/test/skia_common.cc

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/test/skia_common.h"
   6
   7 #include "cc/playback/display_item_list.h"
   8 #include "cc/playback/picture.h"
   9 #include "skia/ext/refptr.h"
  10 #include "third_party/skia/include/core/SkCanvas.h"
  11 #include "third_party/skia/include/core/SkImageGenerator.h"
  12 #include "ui/gfx/geometry/rect.h"
  13 #include "ui/gfx/skia_util.h"
  14
  15 namespace cc {
  16
  17 namespace {
  18
  19 class TestImageGenerator : public SkImageGenerator {
  20  public:
  21   explicit TestImageGenerator(const SkImageInfo& info)
  22       : SkImageGenerator(info) {}
  23 };
  24
  25 }  // anonymous namespace
  26
  27 void DrawPicture(unsigned char* buffer,
  28                  const gfx::Rect& layer_rect,
  29                  scoped_refptr<Picture> picture) {
  30   SkImageInfo info =
  31       SkImageInfo::MakeN32Premul(layer_rect.width(), layer_rect.height());
  32   SkBitmap bitmap;
  33   bitmap.installPixels(info, buffer, info.minRowBytes());
  34   SkCanvas canvas(bitmap);
  35   canvas.clipRect(gfx::RectToSkRect(layer_rect));
  36   // We're drawing the entire canvas, so the negated content region is empty.
  37   gfx::Rect negated_content_region;
  38   picture->Raster(&canvas, NULL, negated_content_region, 1.0f);
  39 }
  40
  41 void DrawDisplayList(unsigned char* buffer,
  42                      const gfx::Rect& layer_rect,
  43                      scoped_refptr<DisplayItemList> list) {
  44   SkImageInfo info =
  45       SkImageInfo::MakeN32Premul(layer_rect.width(), layer_rect.height());
  46   SkBitmap bitmap;
  47   bitmap.installPixels(info, buffer, info.minRowBytes());
  48   SkCanvas canvas(bitmap);
  49   canvas.clipRect(gfx::RectToSkRect(layer_rect));
  50   list->Raster(&canvas, NULL, gfx::Rect(), 1.0f);
  51 }
  52
  53 skia::RefPtr<SkImage> CreateDiscardableImage(const gfx::Size& size) {
  54   const SkImageInfo info =
  55       SkImageInfo::MakeN32Premul(size.width(), size.height());
  56   return skia::AdoptRef(
  57       SkImage::NewFromGenerator(new TestImageGenerator(info)));
  58 }
  59
  60 }  // namespace cc