ui/gfx/nine_image_painter_unittest.cc

   1 // Copyright 2015 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 "ui/gfx/nine_image_painter.h"
   6
   7 #include "testing/gtest/include/gtest/gtest.h"
   8 #include "ui/gfx/canvas.h"
   9 #include "ui/gfx/geometry/insets.h"
  10 #include "ui/gfx/geometry/rect.h"
  11 #include "ui/gfx/image/image_skia.h"
  12
  13 namespace gfx {
  14
  15 TEST(NineImagePainterTest, GetSubsetRegions) {
  16   SkBitmap src;
  17   src.allocN32Pixels(40, 50);
  18   const ImageSkia image_skia(ImageSkiaRep(src, 1.0));
  19   const Insets insets(1, 2, 3, 4);
  20   std::vector<Rect> rects;
  21   NineImagePainter::GetSubsetRegions(image_skia, insets, &rects);
  22   ASSERT_EQ(9u, rects.size());
  23   EXPECT_EQ(gfx::Rect(0, 0, 2, 1), rects[0]);
  24   EXPECT_EQ(gfx::Rect(2, 0, 34, 1), rects[1]);
  25   EXPECT_EQ(gfx::Rect(36, 0, 4, 1), rects[2]);
  26   EXPECT_EQ(gfx::Rect(0, 1, 2, 46), rects[3]);
  27   EXPECT_EQ(gfx::Rect(2, 1, 34, 46), rects[4]);
  28   EXPECT_EQ(gfx::Rect(36, 1, 4, 46), rects[5]);
  29   EXPECT_EQ(gfx::Rect(0, 47, 2, 3), rects[6]);
  30   EXPECT_EQ(gfx::Rect(2, 47, 34, 3), rects[7]);
  31   EXPECT_EQ(gfx::Rect(36, 47, 4, 3), rects[8]);
  32 }
  33
  34 TEST(NineImagePainterTest, PaintScale) {
  35   SkBitmap src;
  36   src.allocN32Pixels(100, 100);
  37   src.eraseColor(SK_ColorRED);
  38   src.eraseArea(SkIRect::MakeXYWH(10, 10, 80, 80), SK_ColorGREEN);
  39
  40   gfx::ImageSkia image(gfx::ImageSkiaRep(src, 0.0f));
  41   gfx::Insets insets(10, 10, 10, 10);
  42   gfx::NineImagePainter painter(image, insets);
  43
  44   int image_scale = 2;
  45   bool is_opaque = true;
  46   gfx::Canvas canvas(gfx::Size(400, 400), image_scale, is_opaque);
  47   canvas.Scale(2, 1);
  48
  49   gfx::Rect bounds(0, 0, 100, 100);
  50   painter.Paint(&canvas, bounds);
  51
  52   SkBitmap result;
  53   const SkISize size = canvas.sk_canvas()->getDeviceSize();
  54   result.allocN32Pixels(size.width(), size.height());
  55   canvas.sk_canvas()->readPixels(&result, 0, 0);
  56
  57   SkIRect green_rect = SkIRect::MakeLTRB(40, 20, 360, 180);
  58   for (int y = 0; y < 200; y++) {
  59     for (int x = 0; x < 400; x++) {
  60       if (green_rect.contains(x, y)) {
  61         EXPECT_EQ(SK_ColorGREEN, result.getColor(x, y));
  62       } else {
  63         EXPECT_EQ(SK_ColorRED, result.getColor(x, y));
  64       }
  65     }
  66   }
  67 }
  68
  69 }  // namespace gfx