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/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 }  // namespace
 157 }  // namespace cc