| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "cc/layers/solid_color_scrollbar_layer.h" |
| |
| #include <memory> |
| |
| #include "cc/layers/layer_impl.h" |
| #include "cc/layers/solid_color_scrollbar_layer_impl.h" |
| |
| namespace cc { |
| |
| std::unique_ptr<LayerImpl> SolidColorScrollbarLayer::CreateLayerImpl( |
| LayerTreeImpl* tree_impl) { |
| const bool kIsOverlayScrollbar = true; |
| return SolidColorScrollbarLayerImpl::Create( |
| tree_impl, id(), solid_color_scrollbar_layer_inputs_.orientation, |
| solid_color_scrollbar_layer_inputs_.thumb_thickness, |
| solid_color_scrollbar_layer_inputs_.track_start, |
| solid_color_scrollbar_layer_inputs_.is_left_side_vertical_scrollbar, |
| kIsOverlayScrollbar); |
| } |
| |
| scoped_refptr<SolidColorScrollbarLayer> SolidColorScrollbarLayer::Create( |
| ScrollbarOrientation orientation, |
| int thumb_thickness, |
| int track_start, |
| bool is_left_side_vertical_scrollbar, |
| ElementId scroll_element_id) { |
| return base::WrapRefCounted(new SolidColorScrollbarLayer( |
| orientation, thumb_thickness, track_start, |
| is_left_side_vertical_scrollbar, scroll_element_id)); |
| } |
| |
| SolidColorScrollbarLayer::SolidColorScrollbarLayerInputs:: |
| SolidColorScrollbarLayerInputs(ScrollbarOrientation orientation, |
| int thumb_thickness, |
| int track_start, |
| bool is_left_side_vertical_scrollbar, |
| ElementId scroll_element_id) |
| : scroll_element_id(scroll_element_id), |
| orientation(orientation), |
| thumb_thickness(thumb_thickness), |
| track_start(track_start), |
| is_left_side_vertical_scrollbar(is_left_side_vertical_scrollbar) {} |
| |
| SolidColorScrollbarLayer::SolidColorScrollbarLayerInputs:: |
| ~SolidColorScrollbarLayerInputs() = default; |
| |
| SolidColorScrollbarLayer::SolidColorScrollbarLayer( |
| ScrollbarOrientation orientation, |
| int thumb_thickness, |
| int track_start, |
| bool is_left_side_vertical_scrollbar, |
| ElementId scroll_element_id) |
| : solid_color_scrollbar_layer_inputs_(orientation, |
| thumb_thickness, |
| track_start, |
| is_left_side_vertical_scrollbar, |
| scroll_element_id) { |
| Layer::SetOpacity(0.f); |
| } |
| |
| SolidColorScrollbarLayer::~SolidColorScrollbarLayer() = default; |
| |
| void SolidColorScrollbarLayer::SetOpacity(float opacity) { |
| // The opacity of a solid color scrollbar layer is always 0 on main thread. |
| DCHECK_EQ(opacity, 0.f); |
| Layer::SetOpacity(opacity); |
| } |
| |
| void SolidColorScrollbarLayer::PushPropertiesTo(LayerImpl* layer) { |
| Layer::PushPropertiesTo(layer); |
| SolidColorScrollbarLayerImpl* scrollbar_layer = |
| static_cast<SolidColorScrollbarLayerImpl*>(layer); |
| |
| scrollbar_layer->SetScrollElementId( |
| solid_color_scrollbar_layer_inputs_.scroll_element_id); |
| } |
| |
| void SolidColorScrollbarLayer::SetNeedsDisplayRect(const gfx::Rect& rect) { |
| // Never needs repaint. |
| } |
| |
| bool SolidColorScrollbarLayer::OpacityCanAnimateOnImplThread() const { |
| return true; |
| } |
| |
| void SolidColorScrollbarLayer::SetScrollElementId(ElementId element_id) { |
| if (element_id == solid_color_scrollbar_layer_inputs_.scroll_element_id) |
| return; |
| |
| solid_color_scrollbar_layer_inputs_.scroll_element_id = element_id; |
| SetNeedsCommit(); |
| } |
| |
| } // namespace cc |