skia/ext/bitmap_platform_device_mac_unittest.cc

   1 // Copyright (c) 2011 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 "skia/ext/bitmap_platform_device_mac.h"
   6
   7 #include "base/memory/scoped_ptr.h"
   8 #include "skia/ext/skia_utils_mac.h"
   9 #include "testing/gtest/include/gtest/gtest.h"
  10 #include "third_party/skia/include/core/SkMatrix.h"
  11 #include "third_party/skia/include/core/SkRegion.h"
  12 #include "third_party/skia/include/core/SkClipStack.h"
  13
  14 namespace skia {
  15
  16 const int kWidth = 400;
  17 const int kHeight = 300;
  18
  19 class BitmapPlatformDeviceMacTest : public testing::Test {
  20  public:
  21   BitmapPlatformDeviceMacTest() {
  22     bitmap_.reset(BitmapPlatformDevice::Create(
  23         NULL, kWidth, kHeight, /*is_opaque=*/true));
  24   }
  25
  26   scoped_ptr<BitmapPlatformDevice> bitmap_;
  27 };
  28
  29 TEST_F(BitmapPlatformDeviceMacTest, ClipRectTransformWithTranslate) {
  30   SkMatrix transform;
  31   transform.setTranslate(50, 140);
  32
  33   SkClipStack ignore;
  34   SkRegion clip_region;
  35   SkIRect rect;
  36   rect.set(0, 0, kWidth, kHeight);
  37   clip_region.setRect(rect);
  38   bitmap_->setMatrixClip(transform, clip_region, ignore);
  39
  40   CGContextRef context = bitmap_->GetBitmapContext();
  41   SkRect clip_rect = gfx::CGRectToSkRect(CGContextGetClipBoundingBox(context));
  42   transform.mapRect(&clip_rect);
  43   EXPECT_EQ(0, clip_rect.fLeft);
  44   EXPECT_EQ(0, clip_rect.fTop);
  45   EXPECT_EQ(kWidth, clip_rect.width());
  46   EXPECT_EQ(kHeight, clip_rect.height());
  47 }
  48
  49 TEST_F(BitmapPlatformDeviceMacTest, ClipRectTransformWithScale) {
  50   SkMatrix transform;
  51   transform.setScale(0.5, 0.5);
  52
  53   SkClipStack unused;
  54   SkRegion clip_region;
  55   SkIRect rect;
  56   rect.set(0, 0, kWidth, kHeight);
  57   clip_region.setRect(rect);
  58   bitmap_->setMatrixClip(transform, clip_region, unused);
  59
  60   CGContextRef context = bitmap_->GetBitmapContext();
  61   SkRect clip_rect = gfx::CGRectToSkRect(CGContextGetClipBoundingBox(context));
  62   transform.mapRect(&clip_rect);
  63   EXPECT_EQ(0, clip_rect.fLeft);
  64   EXPECT_EQ(0, clip_rect.fTop);
  65   EXPECT_EQ(kWidth, clip_rect.width());
  66   EXPECT_EQ(kHeight, clip_rect.height());
  67 }
  68
  69 }  // namespace skia