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   TestSharedBitmapManager shared_bitmap_manager;
  48   FakeUIResourceLayerTreeHostImpl host_impl(&proxy, &shared_bitmap_manager);
  49   scoped_ptr<NinePatchLayerImpl> layer =
  50       NinePatchLayerImpl::Create(host_impl.active_tree(), 1);
  51   layer->draw_properties().visible_content_rect = visible_content_rect;
  52   layer->SetBounds(layer_size);
  53   layer->SetContentBounds(layer_size);
  54   layer->CreateRenderSurface();
  55   layer->draw_properties().render_target = layer.get();
  56
  57   UIResourceId uid = 1;
  58   bool is_opaque = false;
  59   UIResourceBitmap bitmap(bitmap_size, is_opaque);
  60
  61   host_impl.CreateUIResource(uid, bitmap);
  62   layer->SetUIResourceId(uid);
  63   layer->SetImageBounds(bitmap_size);
  64   layer->SetLayout(aperture_rect, border, fill_center);
  65   AppendQuadsData data;
  66   layer->AppendQuads(&quad_culler, &data);
  67
  68   // Verify quad rects
  69   const QuadList& quads = quad_culler.quad_list();
  70   EXPECT_EQ(expected_quad_size, quads.size());
  71
  72   Region remaining(visible_content_rect);
  73   for (size_t i = 0; i < quads.size(); ++i) {
  74     DrawQuad* quad = quads[i];
  75     gfx::Rect quad_rect = quad->rect;
  76
  77     EXPECT_TRUE(visible_content_rect.Contains(quad_rect)) << i;
  78     EXPECT_TRUE(remaining.Contains(quad_rect)) << i;
  79     remaining.Subtract(Region(quad_rect));
  80   }
  81
  82   // Check if the left-over quad is the same size as the mapped aperture quad in
  83   // layer space.
  84   if (!fill_center) {
  85     EXPECT_RECT_EQ(expected_remaining, gfx::ToEnclosedRect(remaining.bounds()));
  86   } else {
  87     EXPECT_TRUE(remaining.bounds().IsEmpty());
  88   }
  89
  90   // Verify UV rects
  91   gfx::Rect bitmap_rect(bitmap_size);
  92   Region tex_remaining(bitmap_rect);
  93   for (size_t i = 0; i < quads.size(); ++i) {
  94     DrawQuad* quad = quads[i];
  95     const TextureDrawQuad* tex_quad = TextureDrawQuad::MaterialCast(quad);
  96     gfx::RectF tex_rect =
  97         gfx::BoundingRect(tex_quad->uv_top_left, tex_quad->uv_bottom_right);
  98     tex_rect.Scale(bitmap_size.width(), bitmap_size.height());
  99     tex_remaining.Subtract(Region(ToRoundedIntRect(tex_rect)));
 100   }
 101
 102   if (!fill_center) {
 103     EXPECT_RECT_EQ(aperture_rect, tex_remaining.bounds());
 104     Region aperture_region(aperture_rect);
 105     EXPECT_EQ(aperture_region, tex_remaining);
 106   } else {
 107     EXPECT_TRUE(remaining.bounds().IsEmpty());
 108   }
 109 }
 110
 111 TEST(NinePatchLayerImplTest, VerifyDrawQuads) {
 112   // Input is a 100x100 bitmap with a 40x50 aperture at x=20, y=30.
 113   // The bounds of the layer are set to 400x400.
 114   gfx::Size bitmap_size(100, 100);
 115   gfx::Size layer_size(400, 500);
 116   gfx::Rect aperture_rect(20, 30, 40, 50);
 117   gfx::Rect border(40, 40, 80, 80);
 118   bool fill_center = false;
 119   size_t expected_quad_size = 8;
 120   NinePatchLayerLayoutTest(bitmap_size,
 121                            aperture_rect,
 122                            layer_size,
 123                            border,
 124                            fill_center,
 125                            expected_quad_size);
 126
 127   // The bounds of the layer are set to less than the bitmap size.
 128   bitmap_size = gfx::Size(100, 100);
 129   layer_size = gfx::Size(40, 50);
 130   aperture_rect = gfx::Rect(20, 30, 40, 50);
 131   border = gfx::Rect(10, 10, 25, 15);
 132   fill_center = true;
 133   expected_quad_size = 9;
 134   NinePatchLayerLayoutTest(bitmap_size,
 135                            aperture_rect,
 136                            layer_size,
 137                            border,
 138                            fill_center,
 139                            expected_quad_size);
 140
 141   // Layer and image sizes are equal.
 142   bitmap_size = gfx::Size(100, 100);
 143   layer_size = gfx::Size(100, 100);
 144   aperture_rect = gfx::Rect(20, 30, 40, 50);
 145   border = gfx::Rect(20, 30, 40, 50);
 146   fill_center = true;
 147   expected_quad_size = 9;
 148   NinePatchLayerLayoutTest(bitmap_size,
 149                            aperture_rect,
 150                            layer_size,
 151                            border,
 152                            fill_center,
 153                            expected_quad_size);
 154 }
 155
 156 TEST(NinePatchLayerImplTest, VerifyDrawQuadsWithEmptyPatches) {
 157   // The top component of the 9-patch is empty, so there should be no quads for
 158   // the top three components.
 159   gfx::Size bitmap_size(100, 100);
 160   gfx::Size layer_size(100, 100);
 161   gfx::Rect aperture_rect(10, 0, 80, 90);
 162   gfx::Rect border(10, 0, 20, 10);
 163   bool fill_center = false;
 164   size_t expected_quad_size = 5;
 165   NinePatchLayerLayoutTest(bitmap_size,
 166                            aperture_rect,
 167                            layer_size,
 168                            border,
 169                            fill_center,
 170                            expected_quad_size);
 171
 172   // The top and left components of the 9-patch are empty, so there should be no
 173   // quads for the left and top components.
 174   bitmap_size = gfx::Size(100, 100);
 175   layer_size = gfx::Size(100, 100);
 176   aperture_rect = gfx::Rect(0, 0, 90, 90);
 177   border = gfx::Rect(0, 0, 10, 10);
 178   fill_center = false;
 179   expected_quad_size = 3;
 180   NinePatchLayerLayoutTest(bitmap_size,
 181                            aperture_rect,
 182                            layer_size,
 183                            border,
 184                            fill_center,
 185                            expected_quad_size);
 186
 187   // The aperture is the size of the bitmap and the center doesn't draw.
 188   bitmap_size = gfx::Size(100, 100);
 189   layer_size = gfx::Size(100, 100);
 190   aperture_rect = gfx::Rect(0, 0, 100, 100);
 191   border = gfx::Rect(0, 0, 0, 0);
 192   fill_center = false;
 193   expected_quad_size = 0;
 194   NinePatchLayerLayoutTest(bitmap_size,
 195                            aperture_rect,
 196                            layer_size,
 197                            border,
 198                            fill_center,
 199                            expected_quad_size);
 200
 201   // The aperture is the size of the bitmap and the center does draw.
 202   bitmap_size = gfx::Size(100, 100);
 203   layer_size = gfx::Size(100, 100);
 204   aperture_rect = gfx::Rect(0, 0, 100, 100);
 205   border = gfx::Rect(0, 0, 0, 0);
 206   fill_center = true;
 207   expected_quad_size = 1;
 208   NinePatchLayerLayoutTest(bitmap_size,
 209                            aperture_rect,
 210                            layer_size,
 211                            border,
 212                            fill_center,
 213                            expected_quad_size);
 214 }
 215
 216 TEST(NinePatchLayerImplTest, Occlusion) {
 217   gfx::Size layer_size(1000, 1000);
 218   gfx::Size viewport_size(1000, 1000);
 219
 220   LayerTestCommon::LayerImplTest impl;
 221
 222   SkBitmap sk_bitmap;
 223   sk_bitmap.allocN32Pixels(10, 10);
 224   sk_bitmap.setImmutable();
 225   UIResourceId uid = 5;
 226   UIResourceBitmap bitmap(sk_bitmap);
 227   impl.host_impl()->CreateUIResource(uid, bitmap);
 228
 229   NinePatchLayerImpl* nine_patch_layer_impl =
 230       impl.AddChildToRoot<NinePatchLayerImpl>();
 231   nine_patch_layer_impl->SetAnchorPoint(gfx::PointF());
 232   nine_patch_layer_impl->SetBounds(layer_size);
 233   nine_patch_layer_impl->SetContentBounds(layer_size);
 234   nine_patch_layer_impl->SetDrawsContent(true);
 235   nine_patch_layer_impl->SetUIResourceId(uid);
 236   nine_patch_layer_impl->SetImageBounds(gfx::Size(10, 10));
 237
 238   gfx::Rect aperture = gfx::Rect(3, 3, 4, 4);
 239   gfx::Rect border = gfx::Rect(300, 300, 400, 400);
 240   nine_patch_layer_impl->SetLayout(aperture, border, true);
 241
 242   impl.CalcDrawProps(viewport_size);
 243
 244   {
 245     SCOPED_TRACE("No occlusion");
 246     gfx::Rect occluded;
 247     impl.AppendQuadsWithOcclusion(nine_patch_layer_impl, occluded);
 248
 249     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(),
 250                                                  gfx::Rect(layer_size));
 251     EXPECT_EQ(9u, impl.quad_list().size());
 252   }
 253
 254   {
 255     SCOPED_TRACE("Full occlusion");
 256     gfx::Rect occluded(nine_patch_layer_impl->visible_content_rect());
 257     impl.AppendQuadsWithOcclusion(nine_patch_layer_impl, occluded);
 258
 259     LayerTestCommon::VerifyQuadsExactlyCoverRect(impl.quad_list(), gfx::Rect());
 260     EXPECT_EQ(impl.quad_list().size(), 0u);
 261   }
 262
 263   {
 264     SCOPED_TRACE("Partial occlusion");
 265     gfx::Rect occluded(0, 0, 500, 1000);
 266     impl.AppendQuadsWithOcclusion(nine_patch_layer_impl, occluded);
 267
 268     size_t partially_occluded_count = 0;
 269     LayerTestCommon::VerifyQuadsCoverRectWithOcclusion(
 270         impl.quad_list(),
 271         gfx::Rect(layer_size),
 272         occluded,
 273         &partially_occluded_count);
 274     // The layer outputs nine quads, three of which are partially occluded, and
 275     // three fully occluded.
 276     EXPECT_EQ(6u, impl.quad_list().size());
 277     EXPECT_EQ(3u, partially_occluded_count);
 278   }
 279 }
 280
 281 }  // namespace
 282 }  // namespace cc