cc/blink/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 "cc/blink/web_scrollbar_layer_impl.h"
   6
   7 #include "cc/blink/scrollbar_impl.h"
   8 #include "cc/blink/web_layer_impl.h"
   9 #include "cc/layers/layer.h"
  10 #include "cc/layers/painted_scrollbar_layer.h"
  11 #include "cc/layers/scrollbar_layer_interface.h"
  12 #include "cc/layers/solid_color_scrollbar_layer.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 cc_blink {
  28
  29 WebScrollbarLayerImpl::WebScrollbarLayerImpl(
  30     blink::WebScrollbar* scrollbar,
  31     blink::WebScrollbarThemePainter painter,
  32     blink::WebScrollbarThemeGeometry* geometry)
  33     : layer_(new WebLayerImpl(PaintedScrollbarLayer::Create(
  34           WebLayerImpl::LayerSettings(),
  35           scoped_ptr<cc::Scrollbar>(
  36               new ScrollbarImpl(make_scoped_ptr(scrollbar),
  37                                 painter,
  38                                 make_scoped_ptr(geometry))).Pass(),
  39           0))) {
  40 }
  41
  42 WebScrollbarLayerImpl::WebScrollbarLayerImpl(
  43     blink::WebScrollbar::Orientation orientation,
  44     int thumb_thickness,
  45     int track_start,
  46     bool is_left_side_vertical_scrollbar)
  47     : layer_(new WebLayerImpl(
  48           SolidColorScrollbarLayer::Create(WebLayerImpl::LayerSettings(),
  49                                            ConvertOrientation(orientation),
  50                                            thumb_thickness,
  51                                            track_start,
  52                                            is_left_side_vertical_scrollbar,
  53                                            0))) {
  54 }
  55
  56 WebScrollbarLayerImpl::~WebScrollbarLayerImpl() {
  57 }
  58
  59 blink::WebLayer* WebScrollbarLayerImpl::layer() {
  60   return layer_.get();
  61 }
  62
  63 void WebScrollbarLayerImpl::setScrollLayer(blink::WebLayer* layer) {
  64   cc::Layer* scroll_layer =
  65       layer ? static_cast<WebLayerImpl*>(layer)->layer() : 0;
  66   layer_->layer()->ToScrollbarLayer()->SetScrollLayer(
  67       scroll_layer ? scroll_layer->id() : cc::Layer::INVALID_ID);
  68 }
  69
  70 void WebScrollbarLayerImpl::setClipLayer(blink::WebLayer* layer) {
  71   cc::Layer* clip_layer =
  72       layer ? static_cast<WebLayerImpl*>(layer)->layer() : 0;
  73   layer_->layer()->ToScrollbarLayer()->SetClipLayer(
  74       clip_layer ? clip_layer->id() : cc::Layer::INVALID_ID);
  75 }
  76
  77 }  // namespace cc_blink