src/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/trees/single_thread_proxy.h"
  16 #include "testing/gmock/include/gmock/gmock.h"
  17 #include "testing/gtest/include/gtest/gtest.h"
  18 #include "ui/gfx/geometry/rect_conversions.h"
  19 #include "ui/gfx/geometry/safe_integer_conversions.h"
  20 #include "ui/gfx/transform.h"
  21
  22 namespace cc {
  23 namespace {
  24
  25 gfx::Rect ToRoundedIntRect(const gfx::RectF& rect_f) {
  26   return gfx::Rect(gfx::ToRoundedInt(rect_f.x()),
  27                    gfx::ToRoundedInt(rect_f.y()),
  28                    gfx::ToRoundedInt(rect_f.width()),
  29                    gfx::ToRoundedInt(rect_f.height()));
  30 }
  31
  32 void NinePatchLayerLayoutTest(const gfx::Size& bitmap_size,
  33                               const gfx::Rect& aperture_rect,
  34                               const gfx::Size& layer_size,
  35                               const gfx::Rect& border,
  36                               bool fill_center,
  37                               size_t expected_quad_size) {
  38   scoped_ptr<RenderPass> render_pass = RenderPass::Create();
  39   gfx::Rect visible_content_rect(layer_size);
  40   gfx::Rect expected_remaining(border.x(),
  41                                border.y(),
  42                                layer_size.width() - border.width(),
  43                                layer_size.height() - border.height());
  44
  45   FakeImplProxy proxy;
  46   TestSharedBitmapManager shared_bitmap_manager;
  47   FakeUIResourceLayerTreeHostImpl host_impl(&proxy, &shared_bitmap_manager);
  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   bool is_opaque = false;
  58   UIResourceBitmap bitmap(bitmap_size, is_opaque);
  59
  60   host_impl.CreateUIResource(uid, bitmap);
  61   layer->SetUIResourceId(uid);
  62   layer->SetImageBounds(bitmap_size);
  63   layer->SetLayout(aperture_rect, border, fill_center);
  64   AppendQuadsData data;
  65   layer->AppendQuads(render_pass.get(), Occlusion(), &data);
  66
  67   // Verify quad rects
  68   const QuadList& quads = render_pass->quad_list;
  69   EXPECT_EQ(expected_quad_size, quads.size());
  70
  71   Region remaining(visible_content_rect);
  72   for (auto iter = quads.cbegin(); iter != quads.cend(); ++iter) {
  73     gfx::Rect quad_rect = iter->rect;
  74
  75     EXPECT_TRUE(visible_content_rect.Contains(quad_rect)) << iter.index();
  76     EXPECT_TRUE(remaining.Contains(quad_rect)) << iter.index();
  77     remaining.Subtract(Region(quad_rect));
  78   }
  79
  80   // Check if the left-over quad is the same size as the mapped aperture quad in
  81   // layer space.
  82   if (!fill_center) {
  83     EXPECT_RECT_EQ(expected_remaining, gfx::ToEnclosedRect(remaining.bounds()));
  84   } else {
  85     EXPECT_TRUE(remaining.bounds().IsEmpty());
  86   }
  87
  88   // Verify UV rects
  89   gfx::Rect bitmap_rect(bitmap_size);
  90   Region tex_remaining(bitmap_rect);
  91   for (const auto& quad : quads) {
  92     const TextureDrawQuad* tex_quad = TextureDrawQuad::MaterialCast(quad);
  93     gfx::RectF tex_rect =
  94         gfx::BoundingRect(tex_quad->uv_top_left, tex_quad->uv_bottom_right);
  95     tex_rect.Scale(bitmap_size.width(), bitmap_size.height());
  96     tex_remaining.Subtract(Region(ToRoundedIntRect(tex_rect)));
  97   }
  98
  99   if (!fill_center) {
 100     EXPECT_RECT_EQ(aperture_rect, tex_remaining.bounds());
 101     Region aperture_region(aperture_rect);
 102     EXPECT_EQ(aperture_region, tex_remaining);
 103   } else {
 104     EXPECT_TRUE(remaining.bounds().IsEmpty());
 105   }
 106 }
 107
 108 TEST(NinePatchLayerImplTest, VerifyDrawQuads) {
 109   // Input is a 100x100 bitmap with a 40x50 aperture at x=20, y=30.
 110   // The bounds of the layer are set to 400x400.
 111   gfx::Size bitmap_size(100, 100);
 112   gfx::Size layer_size(400, 500);
 113   gfx::Rect aperture_rect(20, 30, 40, 50);
 114   gfx::Rect border(40, 40, 80, 80);
 115   bool fill_center = false;
 116   size_t expected_quad_size = 8;
 117   NinePatchLayerLayoutTest(bitmap_size,
 118                            aperture_rect,
 119                            layer_size,
 120                            border,
 121                            fill_center,
 122                            expected_quad_size);
 123
 124   // The bounds of the layer are set to less than the bitmap size.
 125   bitmap_size = gfx::Size(100, 100);
 126   layer_size = gfx::Size(40, 50);
 127   aperture_rect = gfx::Rect(20, 30, 40, 50);
 128   border = gfx::Rect(10, 10, 25, 15);
 129   fill_center = true;
 130   expected_quad_size = 9;
 131   NinePatchLayerLayoutTest(bitmap_size,
 132                            aperture_rect,
 133                            layer_size,
 134                            border,
 135                            fill_center,
 136                            expected_quad_size);
 137
 138   // Layer and image sizes are equal.
 139   bitmap_size = gfx::Size(100, 100);
 140   layer_size = gfx::Size(100, 100);
 141   aperture_rect = gfx::Rect(20, 30, 40, 50);
 142   border = gfx::Rect(20, 30, 40, 50);
 143   fill_center = true;
 144   expected_quad_size = 9;
 145   NinePatchLayerLayoutTest(bitmap_size,
 146                            aperture_rect,
 147                            layer_size,
 148                            border,
 149                            fill_center,
 150                            expected_quad_size);
 151 }
 152
 153 TEST(NinePatchLayerImplTest, VerifyDrawQuadsWithEmptyPatches) {
 154   // The top component of the 9-patch is empty, so there should be no quads for
 155   // the top three components.
 156   gfx::Size bitmap_size(100, 100);
 157   gfx::Size layer_size(100, 100);
 158   gfx::Rect aperture_rect(10, 0, 80, 90);
 159   gfx::Rect border(10, 0, 20, 10);
 160   bool fill_center = false;
 161   size_t expected_quad_size = 5;
 162   NinePatchLayerLayoutTest(bitmap_size,
 163                            aperture_rect,
 164                            layer_size,
 165                            border,
 166                            fill_center,
 167                            expected_quad_size);
 168
 169   // The top and left components of the 9-patch are empty, so there should be no
 170   // quads for the left and top components.
 171   bitmap_size = gfx::Size(100, 100);
 172   layer_size = gfx::Size(100, 100);
 173   aperture_rect = gfx::Rect(0, 0, 90, 90);
 174   border = gfx::Rect(0, 0, 10, 10);
 175   fill_center = false;
 176   expected_quad_size = 3;
 177   NinePatchLayerLayoutTest(bitmap_size,
 178                            aperture_rect,
 179                            layer_size,
 180                            border,
 181                            fill_center,
 182                            expected_quad_size);
 183
 184   // The aperture is the size of the bitmap and the center doesn't draw.
 185   bitmap_size = gfx::Size(100, 100);
 186   layer_size = gfx::Size(100, 100);
 187   aperture_rect = gfx::Rect(0, 0, 100, 100);
 188   border = gfx::Rect(0, 0, 0, 0);
 189   fill_center = false;
 190   expected_quad_size = 0;
 191   NinePatchLayerLayoutTest(bitmap_size,
 192                            aperture_rect,
 193                            layer_size,
 194                            border,
 195                            fill_center,
 196                            expected_quad_size);
 197
 198   // The aperture is the size of the bitmap and the center does draw.
 199   bitmap_size = gfx::Size(100, 100);
 200   layer_size = gfx::Size(100, 100);
 201   aperture_rect = gfx::Rect(0, 0, 100, 100);
 202   border = gfx::Rect(0, 0, 0, 0);
 203   fill_center = true;
 204   expected_quad_size = 1;
 205   NinePatchLayerLayoutTest(bitmap_size,
 206                            aperture_rect,
 207                            layer_size,
 208                            border,
 209                            fill_center,
 210                            expected_quad_size);
 211 }
 212
 213 TEST(NinePatchLayerImplTest, Occlusion) {
 214   gfx::Size layer_size(1000, 1000);
 215   gfx::Size viewport_size(1000, 1000);
 216
 217   LayerTestCommon::LayerImplTest impl;
 218
 219   SkBitmap sk_bitmap;
 220   sk_bitmap.allocN32Pixels(10, 10);
 221   sk_bitmap.setImmutable();
 222   UIResourceId uid = 5;
 223   UIResourceBitmap bitmap(sk_bitmap);
 224   impl.host_impl()->CreateUIResource(uid, bitmap);
 225
 226   NinePatchLayerImpl* nine_patch_layer_impl =
 227       impl.AddChildToRoot<NinePatchLayerImpl>();
 228   nine_patch_layer_impl->SetBounds(layer_size);
 229   nine_patch_layer_impl->SetContentBounds(layer_size);
 230   nine_patch_layer_impl->SetDrawsContent(true);
 231   nine_patch_layer_impl->SetUIResourceId(uid);
 232   nine_patch_layer_impl->SetImageBounds(gfx::Size(10, 10));
 233
 234   gfx::Rect aperture = gfx::Rect(3, 3, 4, 4);
 235   gfx::Rect border = gfx::Rect(300, 300, 400, 400);
 236   nine_patch_layer_impl->SetLayout(aperture, border, true);
 237
 238   impl.CalcDrawProps(viewport_size);
 239
 240   {
 241     SCOPED_TRACE("No occlusion");
 242     gfx::Rect occluded;
 243     impl.AppendQuadsWithOcclusion(nine_patch_layer_impl, occluded);
 244
 245     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(),
 246                                                  gfx::Rect(layer_size));
 247     EXPECT_EQ(9u, impl.quad_list().size());
 248   }
 249
 250   {
 251     SCOPED_TRACE("Full occlusion");
 252     gfx::Rect occluded(nine_patch_layer_impl->visible_content_rect());
 253     impl.AppendQuadsWithOcclusion(nine_patch_layer_impl, occluded);
 254
 255     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(), gfx::Rect());
 256     EXPECT_EQ(impl.quad_list().size(), 0u);
 257   }
 258
 259   {
 260     SCOPED_TRACE("Partial occlusion");
 261     gfx::Rect occluded(0, 0, 500, 1000);
 262     impl.AppendQuadsWithOcclusion(nine_patch_layer_impl, occluded);
 263
 264     size_t partially_occluded_count = 0;
 265     LayerTestCommon::VerifyQuadsAreOccluded(
 266         impl.quad_list(), occluded, &partially_occluded_count);
 267     // The layer outputs nine quads, three of which are partially occluded, and
 268     // three fully occluded.
 269     EXPECT_EQ(6u, impl.quad_list().size());
 270     EXPECT_EQ(3u, partially_occluded_count);
 271   }
 272 }
 273
 274 }  // namespace
 275 }  // namespace cc