cc/content_layer_unittest.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 "config.h"
   6
   7 #include "ContentLayerChromium.h"
   8
   9 #include "BitmapCanvasLayerTextureUpdater.h"
  10 #include "CCRenderingStats.h"
  11 #include "ContentLayerChromiumClient.h"
  12 #include "cc/test/geometry_test_utils.h"
  13 #include "skia/ext/platform_canvas.h"
  14 #include "testing/gtest/include/gtest/gtest.h"
  15 #include <public/WebFloatRect.h>
  16 #include <public/WebRect.h>
  17
  18 using namespace cc;
  19 using namespace WebKit;
  20
  21 namespace {
  22
  23 class MockContentLayerChromiumClient : public ContentLayerChromiumClient {
  24 public:
  25     explicit MockContentLayerChromiumClient(IntRect opaqueLayerRect)
  26         : m_opaqueLayerRect(opaqueLayerRect)
  27     {
  28     }
  29
  30     virtual void paintContents(SkCanvas*, const IntRect&, FloatRect& opaque) OVERRIDE
  31     {
  32         opaque = FloatRect(m_opaqueLayerRect);
  33     }
  34
  35 private:
  36     IntRect m_opaqueLayerRect;
  37 };
  38
  39 TEST(ContentLayerChromiumTest, ContentLayerPainterWithDeviceScale)
  40 {
  41     float contentsScale = 2;
  42     IntRect contentRect(10, 10, 100, 100);
  43     IntRect opaqueRectInLayerSpace(5, 5, 20, 20);
  44     IntRect opaqueRectInContentSpace = opaqueRectInLayerSpace;
  45     opaqueRectInContentSpace.scale(contentsScale);
  46     MockContentLayerChromiumClient client(opaqueRectInLayerSpace);
  47     RefPtr<BitmapCanvasLayerTextureUpdater> updater = BitmapCanvasLayerTextureUpdater::create(ContentLayerPainter::create(&client).PassAs<LayerPainterChromium>());
  48
  49     IntRect resultingOpaqueRect;
  50     CCRenderingStats stats;
  51     updater->prepareToUpdate(contentRect, IntSize(256, 256), contentsScale, contentsScale, resultingOpaqueRect, stats);
  52
  53     EXPECT_RECT_EQ(opaqueRectInContentSpace, resultingOpaqueRect);
  54 }
  55
  56 } // namespace