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// 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/painted_scrollbar_layer_impl.h"
#include <algorithm>
#include "cc/animation/scrollbar_animation_controller.h"
#include "cc/layers/layer.h"
#include "cc/layers/quad_sink.h"
#include "cc/quads/solid_color_draw_quad.h"
#include "cc/quads/texture_draw_quad.h"
#include "cc/trees/layer_tree_impl.h"
#include "cc/trees/layer_tree_settings.h"
#include "ui/gfx/rect_conversions.h"
namespace cc {
scoped_ptr<PaintedScrollbarLayerImpl> PaintedScrollbarLayerImpl::Create(
LayerTreeImpl* tree_impl,
int id,
ScrollbarOrientation orientation) {
return make_scoped_ptr(
new PaintedScrollbarLayerImpl(tree_impl, id, orientation));
}
PaintedScrollbarLayerImpl::PaintedScrollbarLayerImpl(
LayerTreeImpl* tree_impl,
int id,
ScrollbarOrientation orientation)
: ScrollbarLayerImplBase(tree_impl, id, orientation, false, false),
track_ui_resource_id_(0),
thumb_ui_resource_id_(0),
thumb_thickness_(0),
thumb_length_(0),
track_start_(0),
track_length_(0),
vertical_adjust_(0.f),
scroll_layer_id_(Layer::INVALID_ID) {}
PaintedScrollbarLayerImpl::~PaintedScrollbarLayerImpl() {}
scoped_ptr<LayerImpl> PaintedScrollbarLayerImpl::CreateLayerImpl(
LayerTreeImpl* tree_impl) {
return PaintedScrollbarLayerImpl::Create(tree_impl, id(), orientation())
.PassAs<LayerImpl>();
}
void PaintedScrollbarLayerImpl::PushPropertiesTo(LayerImpl* layer) {
ScrollbarLayerImplBase::PushPropertiesTo(layer);
PaintedScrollbarLayerImpl* scrollbar_layer =
static_cast<PaintedScrollbarLayerImpl*>(layer);
scrollbar_layer->SetThumbThickness(thumb_thickness_);
scrollbar_layer->SetThumbLength(thumb_length_);
scrollbar_layer->SetTrackStart(track_start_);
scrollbar_layer->SetTrackLength(track_length_);
scrollbar_layer->set_track_ui_resource_id(track_ui_resource_id_);
scrollbar_layer->set_thumb_ui_resource_id(thumb_ui_resource_id_);
}
bool PaintedScrollbarLayerImpl::WillDraw(DrawMode draw_mode,
ResourceProvider* resource_provider) {
DCHECK(draw_mode != DRAW_MODE_RESOURCELESS_SOFTWARE);
return LayerImpl::WillDraw(draw_mode, resource_provider);
}
void PaintedScrollbarLayerImpl::AppendQuads(
QuadSink* quad_sink,
AppendQuadsData* append_quads_data) {
bool premultipled_alpha = true;
bool flipped = false;
gfx::PointF uv_top_left(0.f, 0.f);
gfx::PointF uv_bottom_right(1.f, 1.f);
gfx::Rect bounds_rect(bounds());
gfx::Rect content_bounds_rect(content_bounds());
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_thumb_quad_rect =
quad_sink->UnoccludedContentRect(thumb_quad_rect, draw_transform());
ResourceProvider::ResourceId thumb_resource_id =
layer_tree_impl()->ResourceIdForUIResource(thumb_ui_resource_id_);
ResourceProvider::ResourceId track_resource_id =
layer_tree_impl()->ResourceIdForUIResource(track_ui_resource_id_);
if (thumb_resource_id && !visible_thumb_quad_rect.IsEmpty()) {
gfx::Rect opaque_rect;
const float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
scoped_ptr<TextureDrawQuad> quad = TextureDrawQuad::Create();
quad->SetNew(shared_quad_state,
thumb_quad_rect,
opaque_rect,
visible_thumb_quad_rect,
thumb_resource_id,
premultipled_alpha,
uv_top_left,
uv_bottom_right,
SK_ColorTRANSPARENT,
opacity,
flipped);
quad_sink->Append(quad.PassAs<DrawQuad>());
}
gfx::Rect track_quad_rect = content_bounds_rect;
gfx::Rect visible_track_quad_rect =
quad_sink->UnoccludedContentRect(track_quad_rect, draw_transform());
if (track_resource_id && !visible_track_quad_rect.IsEmpty()) {
gfx::Rect opaque_rect(contents_opaque() ? track_quad_rect : gfx::Rect());
const float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
scoped_ptr<TextureDrawQuad> quad = TextureDrawQuad::Create();
quad->SetNew(shared_quad_state,
track_quad_rect,
opaque_rect,
visible_track_quad_rect,
track_resource_id,
premultipled_alpha,
uv_top_left,
uv_bottom_right,
SK_ColorTRANSPARENT,
opacity,
flipped);
quad_sink->Append(quad.PassAs<DrawQuad>());
}
}
void PaintedScrollbarLayerImpl::SetThumbThickness(int thumb_thickness) {
if (thumb_thickness_ == thumb_thickness)
return;
thumb_thickness_ = thumb_thickness;
NoteLayerPropertyChanged();
}
int PaintedScrollbarLayerImpl::ThumbThickness() const {
return thumb_thickness_;
}
void PaintedScrollbarLayerImpl::SetThumbLength(int thumb_length) {
if (thumb_length_ == thumb_length)
return;
thumb_length_ = thumb_length;
NoteLayerPropertyChanged();
}
int PaintedScrollbarLayerImpl::ThumbLength() const {
return thumb_length_;
}
void PaintedScrollbarLayerImpl::SetTrackStart(int track_start) {
if (track_start_ == track_start)
return;
track_start_ = track_start;
NoteLayerPropertyChanged();
}
int PaintedScrollbarLayerImpl::TrackStart() const {
return track_start_;
}
void PaintedScrollbarLayerImpl::SetTrackLength(int track_length) {
if (track_length_ == track_length)
return;
track_length_ = track_length;
NoteLayerPropertyChanged();
}
float PaintedScrollbarLayerImpl::TrackLength() const {
return track_length_ + (orientation() == VERTICAL ? vertical_adjust() : 0);
}
bool PaintedScrollbarLayerImpl::IsThumbResizable() const {
return false;
}
const char* PaintedScrollbarLayerImpl::LayerTypeAsString() const {
return "cc::PaintedScrollbarLayerImpl";
}
} // namespace cc
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