src/cc/layers/solid_color_scrollbar_layer.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/solid_color_scrollbar_layer.h"
   6
   7 #include "base/memory/scoped_ptr.h"
   8 #include "cc/layers/layer_impl.h"
   9 #include "cc/layers/solid_color_scrollbar_layer_impl.h"
  10
  11 namespace cc {
  12
  13 scoped_ptr<LayerImpl> SolidColorScrollbarLayer::CreateLayerImpl(
  14     LayerTreeImpl* tree_impl) {
  15   const bool kIsOverlayScrollbar = true;
  16   return SolidColorScrollbarLayerImpl::Create(tree_impl,
  17                                               id(),
  18                                               orientation(),
  19                                               thumb_thickness_,
  20                                               track_start_,
  21                                               is_left_side_vertical_scrollbar_,
  22                                               kIsOverlayScrollbar)
  23       .PassAs<LayerImpl>();
  24 }
  25
  26 scoped_refptr<SolidColorScrollbarLayer> SolidColorScrollbarLayer::Create(
  27     ScrollbarOrientation orientation,
  28     int thumb_thickness,
  29     int track_start,
  30     bool is_left_side_vertical_scrollbar,
  31     int scroll_layer_id) {
  32   return make_scoped_refptr(
  33       new SolidColorScrollbarLayer(orientation,
  34                                    thumb_thickness,
  35                                    track_start,
  36                                    is_left_side_vertical_scrollbar,
  37                                    scroll_layer_id));
  38 }
  39
  40 SolidColorScrollbarLayer::SolidColorScrollbarLayer(
  41     ScrollbarOrientation orientation,
  42     int thumb_thickness,
  43     int track_start,
  44     bool is_left_side_vertical_scrollbar,
  45     int scroll_layer_id)
  46     : scroll_layer_id_(Layer::INVALID_ID),
  47       clip_layer_id_(scroll_layer_id),
  48       orientation_(orientation),
  49       thumb_thickness_(thumb_thickness),
  50       track_start_(track_start),
  51       is_left_side_vertical_scrollbar_(is_left_side_vertical_scrollbar) {}
  52
  53 SolidColorScrollbarLayer::~SolidColorScrollbarLayer() {}
  54
  55 ScrollbarLayerInterface* SolidColorScrollbarLayer::ToScrollbarLayer() {
  56   return this;
  57 }
  58
  59 void SolidColorScrollbarLayer::PushPropertiesTo(LayerImpl* layer) {
  60   Layer::PushPropertiesTo(layer);
  61   PushScrollClipPropertiesTo(layer);
  62 }
  63
  64 void SolidColorScrollbarLayer::PushScrollClipPropertiesTo(LayerImpl* layer) {
  65   SolidColorScrollbarLayerImpl* scrollbar_layer =
  66       static_cast<SolidColorScrollbarLayerImpl*>(layer);
  67
  68   scrollbar_layer->SetScrollLayerById(scroll_layer_id_);
  69   scrollbar_layer->SetClipLayerById(clip_layer_id_);
  70 }
  71
  72 void SolidColorScrollbarLayer::SetNeedsDisplayRect(const gfx::RectF&) {
  73   // Never needs repaint.
  74 }
  75
  76 bool SolidColorScrollbarLayer::OpacityCanAnimateOnImplThread() const {
  77   return true;
  78 }
  79
  80 int SolidColorScrollbarLayer::ScrollLayerId() const {
  81   return scroll_layer_id_;
  82 }
  83
  84 void SolidColorScrollbarLayer::SetScrollLayer(int layer_id) {
  85   if (layer_id == scroll_layer_id_)
  86     return;
  87
  88   scroll_layer_id_ = layer_id;
  89   SetNeedsFullTreeSync();
  90 }
  91
  92 void SolidColorScrollbarLayer::SetClipLayer(int layer_id) {
  93   if (layer_id == clip_layer_id_)
  94     return;
  95
  96   clip_layer_id_ = layer_id;
  97   SetNeedsFullTreeSync();
  98 }
  99
 100 ScrollbarOrientation SolidColorScrollbarLayer::orientation() const {
 101   return orientation_;
 102 }
 103
 104 }  // namespace cc