cc/layers/picture_layer_unittest.cc

   1 // Copyright 2013 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 "cc/layers/picture_layer.h"
   6
   7 #include "cc/layers/content_layer_client.h"
   8 #include "cc/layers/picture_layer_impl.h"
   9 #include "cc/resources/resource_update_queue.h"
  10 #include "cc/test/fake_layer_tree_host.h"
  11 #include "cc/test/fake_picture_layer_impl.h"
  12 #include "cc/test/fake_proxy.h"
  13 #include "cc/test/impl_side_painting_settings.h"
  14 #include "cc/trees/occlusion_tracker.h"
  15 #include "testing/gtest/include/gtest/gtest.h"
  16
  17 namespace cc {
  18 namespace {
  19
  20 class MockContentLayerClient : public ContentLayerClient {
  21  public:
  22   virtual void PaintContents(SkCanvas* canvas,
  23                              const gfx::Rect& clip,
  24                              gfx::RectF* opaque) OVERRIDE {}
  25   virtual void DidChangeLayerCanUseLCDText() OVERRIDE {}
  26 };
  27
  28 TEST(PictureLayerTest, NoTilesIfEmptyBounds) {
  29   MockContentLayerClient client;
  30   scoped_refptr<PictureLayer> layer = PictureLayer::Create(&client);
  31   layer->SetBounds(gfx::Size(10, 10));
  32
  33   scoped_ptr<FakeLayerTreeHost> host = FakeLayerTreeHost::Create();
  34   host->SetRootLayer(layer);
  35   layer->SetIsDrawable(true);
  36   layer->SavePaintProperties();
  37
  38   OcclusionTracker occlusion(gfx::Rect(0, 0, 1000, 1000), false);
  39   scoped_ptr<ResourceUpdateQueue> queue(new ResourceUpdateQueue);
  40   layer->Update(queue.get(), &occlusion);
  41
  42   layer->SetBounds(gfx::Size(0, 0));
  43   layer->SavePaintProperties();
  44   // Intentionally skipping Update since it would normally be skipped on
  45   // a layer with empty bounds.
  46
  47   FakeProxy proxy;
  48 #ifndef NDEBUG
  49   proxy.SetCurrentThreadIsImplThread(true);
  50 #endif
  51   {
  52     FakeLayerTreeHostImpl host_impl(ImplSidePaintingSettings(), &proxy);
  53     host_impl.CreatePendingTree();
  54     scoped_ptr<FakePictureLayerImpl> layer_impl =
  55         FakePictureLayerImpl::Create(host_impl.pending_tree(), 1);
  56
  57     layer->PushPropertiesTo(layer_impl.get());
  58     EXPECT_FALSE(layer_impl->CanHaveTilings());
  59     EXPECT_TRUE(layer_impl->bounds() == gfx::Size(0, 0));
  60     EXPECT_TRUE(layer_impl->pile()->size() == gfx::Size(0, 0));
  61     EXPECT_TRUE(layer_impl->pile()->recorded_region().IsEmpty());
  62   }
  63 #ifndef NDEBUG
  64   proxy.SetCurrentThreadIsImplThread(false);
  65 #endif
  66 }
  67
  68 }  // namespace
  69 }  // namespace cc