cc/heads_up_display_layer.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 "cc/heads_up_display_layer.h"
   6
   7 #include "base/debug/trace_event.h"
   8 #include "cc/heads_up_display_layer_impl.h"
   9 #include "cc/layer_tree_host.h"
  10
  11 namespace cc {
  12
  13 scoped_refptr<HeadsUpDisplayLayer> HeadsUpDisplayLayer::create()
  14 {
  15     return make_scoped_refptr(new HeadsUpDisplayLayer());
  16 }
  17
  18 HeadsUpDisplayLayer::HeadsUpDisplayLayer()
  19     : Layer()
  20 {
  21     setBounds(gfx::Size(256, 128));
  22 }
  23
  24 HeadsUpDisplayLayer::~HeadsUpDisplayLayer()
  25 {
  26 }
  27
  28 void HeadsUpDisplayLayer::update(ResourceUpdateQueue&, const OcclusionTracker*, RenderingStats&)
  29 {
  30     const LayerTreeDebugState& debugState = layerTreeHost()->debugState();
  31     int maxTextureSize = layerTreeHost()->rendererCapabilities().maxTextureSize;
  32
  33     gfx::Size bounds;
  34     gfx::Transform matrix;
  35     matrix.MakeIdentity();
  36
  37     if (debugState.showPlatformLayerTree || debugState.showHudRects()) {
  38         int width = std::min(maxTextureSize, layerTreeHost()->layoutViewportSize().width());
  39         int height = std::min(maxTextureSize, layerTreeHost()->layoutViewportSize().height());
  40         bounds = gfx::Size(width, height);
  41     } else {
  42         bounds = gfx::Size(256, 128);
  43         matrix.Translate(layerTreeHost()->layoutViewportSize().width() - 256, 0);
  44     }
  45
  46     setBounds(bounds);
  47     setTransform(matrix);
  48 }
  49
  50 bool HeadsUpDisplayLayer::drawsContent() const
  51 {
  52     return true;
  53 }
  54
  55 void HeadsUpDisplayLayer::setFontAtlas(scoped_ptr<FontAtlas> fontAtlas)
  56 {
  57     m_fontAtlas = fontAtlas.Pass();
  58     setNeedsCommit();
  59 }
  60
  61 scoped_ptr<LayerImpl> HeadsUpDisplayLayer::createLayerImpl()
  62 {
  63     return HeadsUpDisplayLayerImpl::create(m_layerId).PassAs<LayerImpl>();
  64 }
  65
  66 void HeadsUpDisplayLayer::pushPropertiesTo(LayerImpl* layerImpl)
  67 {
  68     Layer::pushPropertiesTo(layerImpl);
  69
  70     if (!m_fontAtlas)
  71         return;
  72
  73     HeadsUpDisplayLayerImpl* hudLayerImpl = static_cast<HeadsUpDisplayLayerImpl*>(layerImpl);
  74     hudLayerImpl->setFontAtlas(m_fontAtlas.Pass());
  75 }
  76
  77 }  // namespace cc