src/content/renderer/compositor_bindings/web_scrollbar_layer_impl.cc

   1 // Copyright 2014 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 "content/renderer/compositor_bindings/web_scrollbar_layer_impl.h"
   6
   7 #include "cc/layers/layer.h"
   8 #include "cc/layers/painted_scrollbar_layer.h"
   9 #include "cc/layers/scrollbar_layer_interface.h"
  10 #include "cc/layers/solid_color_scrollbar_layer.h"
  11 #include "content/renderer/compositor_bindings/scrollbar_impl.h"
  12 #include "content/renderer/compositor_bindings/web_layer_impl.h"
  13
  14 using cc::PaintedScrollbarLayer;
  15 using cc::SolidColorScrollbarLayer;
  16
  17 namespace {
  18
  19 cc::ScrollbarOrientation ConvertOrientation(
  20     blink::WebScrollbar::Orientation orientation) {
  21   return orientation == blink::WebScrollbar::Horizontal ? cc::HORIZONTAL
  22                                                         : cc::VERTICAL;
  23 }
  24
  25 }  // namespace
  26
  27 namespace content {
  28
  29 WebScrollbarLayerImpl::WebScrollbarLayerImpl(
  30     blink::WebScrollbar* scrollbar,
  31     blink::WebScrollbarThemePainter painter,
  32     blink::WebScrollbarThemeGeometry* geometry)
  33     : layer_(new WebLayerImpl(PaintedScrollbarLayer::Create(
  34           scoped_ptr<cc::Scrollbar>(
  35               new ScrollbarImpl(make_scoped_ptr(scrollbar),
  36                                 painter,
  37                                 make_scoped_ptr(geometry))).Pass(),
  38           0))) {
  39 }
  40
  41 WebScrollbarLayerImpl::WebScrollbarLayerImpl(
  42     blink::WebScrollbar::Orientation orientation,
  43     int thumb_thickness,
  44     int track_start,
  45     bool is_left_side_vertical_scrollbar)
  46     : layer_(new WebLayerImpl(
  47           SolidColorScrollbarLayer::Create(ConvertOrientation(orientation),
  48                                            thumb_thickness,
  49                                            track_start,
  50                                            is_left_side_vertical_scrollbar,
  51                                            0))) {
  52 }
  53
  54 WebScrollbarLayerImpl::~WebScrollbarLayerImpl() {
  55 }
  56
  57 blink::WebLayer* WebScrollbarLayerImpl::layer() {
  58   return layer_.get();
  59 }
  60
  61 void WebScrollbarLayerImpl::setScrollLayer(blink::WebLayer* layer) {
  62   cc::Layer* scroll_layer =
  63       layer ? static_cast<WebLayerImpl*>(layer)->layer() : 0;
  64   layer_->layer()->ToScrollbarLayer()->SetScrollLayer(scroll_layer->id());
  65 }
  66
  67 void WebScrollbarLayerImpl::setClipLayer(blink::WebLayer* layer) {
  68   cc::Layer* clip_layer =
  69       layer ? static_cast<WebLayerImpl*>(layer)->layer() : 0;
  70   layer_->layer()->ToScrollbarLayer()->SetClipLayer(clip_layer->id());
  71 }
  72
  73 }  // namespace content
  74