cc/layers/nine_patch_layer_impl_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 "base/containers/hash_tables.h"
   6 #include "cc/layers/append_quads_data.h"
   7 #include "cc/layers/nine_patch_layer_impl.h"
   8 #include "cc/quads/texture_draw_quad.h"
   9 #include "cc/resources/ui_resource_bitmap.h"
  10 #include "cc/resources/ui_resource_client.h"
  11 #include "cc/test/fake_impl_proxy.h"
  12 #include "cc/test/fake_ui_resource_layer_tree_host_impl.h"
  13 #include "cc/test/geometry_test_utils.h"
  14 #include "cc/test/layer_test_common.h"
  15 #include "cc/test/mock_quad_culler.h"
  16 #include "cc/trees/single_thread_proxy.h"
  17 #include "testing/gmock/include/gmock/gmock.h"
  18 #include "testing/gtest/include/gtest/gtest.h"
  19 #include "ui/gfx/rect_conversions.h"
  20 #include "ui/gfx/safe_integer_conversions.h"
  21 #include "ui/gfx/transform.h"
  22
  23 namespace cc {
  24 namespace {
  25
  26 gfx::Rect ToRoundedIntRect(const gfx::RectF& rect_f) {
  27   return gfx::Rect(gfx::ToRoundedInt(rect_f.x()),
  28                    gfx::ToRoundedInt(rect_f.y()),
  29                    gfx::ToRoundedInt(rect_f.width()),
  30                    gfx::ToRoundedInt(rect_f.height()));
  31 }
  32
  33 void NinePatchLayerLayoutTest(const gfx::Size& bitmap_size,
  34                               const gfx::Rect& aperture_rect,
  35                               const gfx::Size& layer_size,
  36                               const gfx::Rect& border,
  37                               bool fill_center,
  38                               size_t expected_quad_size) {
  39   MockQuadCuller quad_culler;
  40   gfx::Rect visible_content_rect(layer_size);
  41   gfx::Rect expected_remaining(border.x(),
  42                                border.y(),
  43                                layer_size.width() - border.width(),
  44                                layer_size.height() - border.height());
  45
  46   FakeImplProxy proxy;
  47   FakeUIResourceLayerTreeHostImpl host_impl(&proxy);
  48   scoped_ptr<NinePatchLayerImpl> layer =
  49       NinePatchLayerImpl::Create(host_impl.active_tree(), 1);
  50   layer->draw_properties().visible_content_rect = visible_content_rect;
  51   layer->SetBounds(layer_size);
  52   layer->SetContentBounds(layer_size);
  53   layer->CreateRenderSurface();
  54   layer->draw_properties().render_target = layer.get();
  55
  56   UIResourceId uid = 1;
  57   SkBitmap skbitmap;
  58   skbitmap.setConfig(
  59       SkBitmap::kARGB_8888_Config, bitmap_size.width(), bitmap_size.height());
  60   skbitmap.allocPixels();
  61   skbitmap.setImmutable();
  62   UIResourceBitmap bitmap(skbitmap);
  63
  64   host_impl.CreateUIResource(uid, bitmap);
  65   layer->SetUIResourceId(uid);
  66   layer->SetImageBounds(bitmap_size);
  67   layer->SetLayout(aperture_rect, border, fill_center);
  68   AppendQuadsData data;
  69   layer->AppendQuads(&quad_culler, &data);
  70
  71   // Verify quad rects
  72   const QuadList& quads = quad_culler.quad_list();
  73   EXPECT_EQ(expected_quad_size, quads.size());
  74
  75   Region remaining(visible_content_rect);
  76   for (size_t i = 0; i < quads.size(); ++i) {
  77     DrawQuad* quad = quads[i];
  78     gfx::Rect quad_rect = quad->rect;
  79
  80     EXPECT_TRUE(visible_content_rect.Contains(quad_rect)) << i;
  81     EXPECT_TRUE(remaining.Contains(quad_rect)) << i;
  82     remaining.Subtract(Region(quad_rect));
  83   }
  84
  85   // Check if the left-over quad is the same size as the mapped aperture quad in
  86   // layer space.
  87   if (!fill_center) {
  88     EXPECT_RECT_EQ(expected_remaining, gfx::ToEnclosedRect(remaining.bounds()));
  89   } else {
  90     EXPECT_TRUE(remaining.bounds().IsEmpty());
  91   }
  92
  93   // Verify UV rects
  94   gfx::Rect bitmap_rect(bitmap_size);
  95   Region tex_remaining(bitmap_rect);
  96   for (size_t i = 0; i < quads.size(); ++i) {
  97     DrawQuad* quad = quads[i];
  98     const TextureDrawQuad* tex_quad = TextureDrawQuad::MaterialCast(quad);
  99     gfx::RectF tex_rect =
 100         gfx::BoundingRect(tex_quad->uv_top_left, tex_quad->uv_bottom_right);
 101     tex_rect.Scale(bitmap_size.width(), bitmap_size.height());
 102     tex_remaining.Subtract(Region(ToRoundedIntRect(tex_rect)));
 103   }
 104
 105   if (!fill_center) {
 106     EXPECT_RECT_EQ(aperture_rect, tex_remaining.bounds());
 107     Region aperture_region(aperture_rect);
 108     EXPECT_EQ(aperture_region, tex_remaining);
 109   } else {
 110     EXPECT_TRUE(remaining.bounds().IsEmpty());
 111   }
 112 }
 113
 114 TEST(NinePatchLayerImplTest, VerifyDrawQuads) {
 115   // Input is a 100x100 bitmap with a 40x50 aperture at x=20, y=30.
 116   // The bounds of the layer are set to 400x400.
 117   gfx::Size bitmap_size(100, 100);
 118   gfx::Size layer_size(400, 500);
 119   gfx::Rect aperture_rect(20, 30, 40, 50);
 120   gfx::Rect border(40, 40, 80, 80);
 121   bool fill_center = false;
 122   size_t expected_quad_size = 8;
 123   NinePatchLayerLayoutTest(bitmap_size,
 124                            aperture_rect,
 125                            layer_size,
 126                            border,
 127                            fill_center,
 128                            expected_quad_size);
 129
 130   // The bounds of the layer are set to less than the bitmap size.
 131   bitmap_size = gfx::Size(100, 100);
 132   layer_size = gfx::Size(40, 50);
 133   aperture_rect = gfx::Rect(20, 30, 40, 50);
 134   border = gfx::Rect(10, 10, 25, 15);
 135   fill_center = true;
 136   expected_quad_size = 9;
 137   NinePatchLayerLayoutTest(bitmap_size,
 138                            aperture_rect,
 139                            layer_size,
 140                            border,
 141                            fill_center,
 142                            expected_quad_size);
 143
 144   // Layer and image sizes are equal.
 145   bitmap_size = gfx::Size(100, 100);
 146   layer_size = gfx::Size(100, 100);
 147   aperture_rect = gfx::Rect(20, 30, 40, 50);
 148   border = gfx::Rect(20, 30, 40, 50);
 149   fill_center = true;
 150   expected_quad_size = 9;
 151   NinePatchLayerLayoutTest(bitmap_size,
 152                            aperture_rect,
 153                            layer_size,
 154                            border,
 155                            fill_center,
 156                            expected_quad_size);
 157 }
 158
 159 }  // namespace
 160 }  // namespace cc