| // 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/quad_sink.h" |
| #include "cc/layers/solid_color_scrollbar_layer_impl.h" |
| #include "cc/quads/solid_color_draw_quad.h" |
| #include "cc/trees/layer_tree_impl.h" |
| #include "cc/trees/layer_tree_settings.h" |
| |
| namespace cc { |
| |
| scoped_ptr<SolidColorScrollbarLayerImpl> SolidColorScrollbarLayerImpl::Create( |
| LayerTreeImpl* tree_impl, |
| int id, |
| ScrollbarOrientation orientation, |
| int thumb_thickness, |
| int track_start, |
| bool is_left_side_vertical_scrollbar, |
| bool is_overlay) { |
| return make_scoped_ptr( |
| new SolidColorScrollbarLayerImpl(tree_impl, |
| id, |
| orientation, |
| thumb_thickness, |
| track_start, |
| is_left_side_vertical_scrollbar, |
| is_overlay)); |
| } |
| |
| SolidColorScrollbarLayerImpl::~SolidColorScrollbarLayerImpl() {} |
| |
| scoped_ptr<LayerImpl> SolidColorScrollbarLayerImpl::CreateLayerImpl( |
| LayerTreeImpl* tree_impl) { |
| return SolidColorScrollbarLayerImpl::Create(tree_impl, |
| id(), |
| orientation(), |
| thumb_thickness_, |
| track_start_, |
| is_left_side_vertical_scrollbar(), |
| is_overlay_scrollbar()) |
| .PassAs<LayerImpl>(); |
| } |
| |
| SolidColorScrollbarLayerImpl::SolidColorScrollbarLayerImpl( |
| LayerTreeImpl* tree_impl, |
| int id, |
| ScrollbarOrientation orientation, |
| int thumb_thickness, |
| int track_start, |
| bool is_left_side_vertical_scrollbar, |
| bool is_overlay) |
| : ScrollbarLayerImplBase(tree_impl, |
| id, |
| orientation, |
| is_left_side_vertical_scrollbar, |
| is_overlay), |
| thumb_thickness_(thumb_thickness), |
| track_start_(track_start), |
| color_(tree_impl->settings().solid_color_scrollbar_color) { |
| SetOpacity(0.f); |
| } |
| |
| void SolidColorScrollbarLayerImpl::PushPropertiesTo(LayerImpl* layer) { |
| ScrollbarLayerImplBase::PushPropertiesTo(layer); |
| } |
| |
| int SolidColorScrollbarLayerImpl::ThumbThickness() const { |
| if (thumb_thickness_ != -1) |
| return thumb_thickness_; |
| |
| if (orientation() == HORIZONTAL) |
| return bounds().height(); |
| else |
| return bounds().width(); |
| } |
| |
| int SolidColorScrollbarLayerImpl::ThumbLength() const { |
| return std::max( |
| static_cast<int>(visible_to_total_length_ratio() * TrackLength()), |
| ThumbThickness()); |
| } |
| |
| float SolidColorScrollbarLayerImpl::TrackLength() const { |
| if (orientation() == HORIZONTAL) |
| return bounds().width() - TrackStart() * 2; |
| else |
| return bounds().height() + vertical_adjust() - TrackStart() * 2; |
| } |
| |
| int SolidColorScrollbarLayerImpl::TrackStart() const { return track_start_; } |
| |
| bool SolidColorScrollbarLayerImpl::IsThumbResizable() const { |
| return true; |
| } |
| |
| void SolidColorScrollbarLayerImpl::AppendQuads(QuadSink* quad_sink, |
| AppendQuadsData* append_quads_data) { |
| SharedQuadState* shared_quad_state = quad_sink->CreateSharedQuadState(); |
| PopulateSharedQuadState(shared_quad_state); |
| |
| AppendDebugBorderQuad( |
| quad_sink, content_bounds(), shared_quad_state, append_quads_data); |
| |
| gfx::Rect thumb_quad_rect(ComputeThumbQuadRect()); |
| gfx::Rect visible_quad_rect = quad_sink->UnoccludedContentRect( |
| thumb_quad_rect, draw_properties().target_space_transform); |
| if (visible_quad_rect.IsEmpty()) |
| return; |
| |
| scoped_ptr<SolidColorDrawQuad> quad = SolidColorDrawQuad::Create(); |
| quad->SetNew( |
| shared_quad_state, thumb_quad_rect, visible_quad_rect, color_, false); |
| quad_sink->Append(quad.PassAs<DrawQuad>()); |
| } |
| |
| } // namespace cc |