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// Copyright 2014 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/playback/display_list_raster_source.h"
#include "base/trace_event/trace_event.h"
#include "cc/base/region.h"
#include "cc/debug/debug_colors.h"
#include "cc/playback/display_item_list.h"
#include "cc/playback/raster_source_helper.h"
#include "skia/ext/analysis_canvas.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "third_party/skia/include/core/SkPictureRecorder.h"
#include "ui/gfx/geometry/rect_conversions.h"
namespace cc {
scoped_refptr<DisplayListRasterSource>
DisplayListRasterSource::CreateFromDisplayListRecordingSource(
const DisplayListRecordingSource* other,
bool can_use_lcd_text) {
return make_scoped_refptr(
new DisplayListRasterSource(other, can_use_lcd_text));
}
DisplayListRasterSource::DisplayListRasterSource()
: painter_reported_memory_usage_(0),
background_color_(SK_ColorTRANSPARENT),
requires_clear_(true),
can_use_lcd_text_(true),
is_solid_color_(false),
solid_color_(SK_ColorTRANSPARENT),
clear_canvas_with_debug_color_(false),
slow_down_raster_scale_factor_for_debug_(0),
should_attempt_to_use_distance_field_text_(false) {}
DisplayListRasterSource::DisplayListRasterSource(
const DisplayListRecordingSource* other,
bool can_use_lcd_text)
: display_list_(other->display_list_),
painter_reported_memory_usage_(other->painter_reported_memory_usage_),
background_color_(other->background_color_),
requires_clear_(other->requires_clear_),
can_use_lcd_text_(can_use_lcd_text),
is_solid_color_(other->is_solid_color_),
solid_color_(other->solid_color_),
recorded_viewport_(other->recorded_viewport_),
size_(other->size_),
clear_canvas_with_debug_color_(other->clear_canvas_with_debug_color_),
slow_down_raster_scale_factor_for_debug_(
other->slow_down_raster_scale_factor_for_debug_),
should_attempt_to_use_distance_field_text_(false) {}
DisplayListRasterSource::DisplayListRasterSource(
const DisplayListRasterSource* other,
bool can_use_lcd_text)
: display_list_(other->display_list_),
painter_reported_memory_usage_(other->painter_reported_memory_usage_),
background_color_(other->background_color_),
requires_clear_(other->requires_clear_),
can_use_lcd_text_(can_use_lcd_text),
is_solid_color_(other->is_solid_color_),
solid_color_(other->solid_color_),
recorded_viewport_(other->recorded_viewport_),
size_(other->size_),
clear_canvas_with_debug_color_(other->clear_canvas_with_debug_color_),
slow_down_raster_scale_factor_for_debug_(
other->slow_down_raster_scale_factor_for_debug_),
should_attempt_to_use_distance_field_text_(
other->should_attempt_to_use_distance_field_text_) {}
DisplayListRasterSource::~DisplayListRasterSource() {
}
void DisplayListRasterSource::PlaybackToSharedCanvas(
SkCanvas* canvas,
const gfx::Rect& canvas_rect,
float contents_scale) const {
RasterCommon(canvas, NULL, canvas_rect, canvas_rect, contents_scale);
}
void DisplayListRasterSource::RasterForAnalysis(skia::AnalysisCanvas* canvas,
const gfx::Rect& canvas_rect,
float contents_scale) const {
RasterCommon(canvas, canvas, canvas_rect, canvas_rect, contents_scale);
}
void DisplayListRasterSource::PlaybackToCanvas(
SkCanvas* canvas,
const gfx::Rect& canvas_bitmap_rect,
const gfx::Rect& canvas_playback_rect,
float contents_scale) const {
RasterSourceHelper::PrepareForPlaybackToCanvas(
canvas, canvas_bitmap_rect, canvas_playback_rect, gfx::Rect(size_),
contents_scale, background_color_, clear_canvas_with_debug_color_,
requires_clear_);
RasterCommon(canvas, NULL, canvas_bitmap_rect, canvas_playback_rect,
contents_scale);
}
void DisplayListRasterSource::RasterCommon(
SkCanvas* canvas,
SkPicture::AbortCallback* callback,
const gfx::Rect& canvas_bitmap_rect,
const gfx::Rect& canvas_playback_rect,
float contents_scale) const {
canvas->translate(-canvas_bitmap_rect.x(), -canvas_bitmap_rect.y());
gfx::Rect content_rect =
gfx::ToEnclosingRect(gfx::ScaleRect(gfx::Rect(size_), contents_scale));
content_rect.Intersect(canvas_playback_rect);
canvas->clipRect(gfx::RectToSkRect(content_rect), SkRegion::kIntersect_Op);
DCHECK(display_list_.get());
gfx::Rect canvas_target_playback_rect =
canvas_playback_rect - canvas_bitmap_rect.OffsetFromOrigin();
int repeat_count = std::max(1, slow_down_raster_scale_factor_for_debug_);
for (int i = 0; i < repeat_count; ++i) {
display_list_->Raster(canvas, callback, canvas_target_playback_rect,
contents_scale);
}
}
skia::RefPtr<SkPicture> DisplayListRasterSource::GetFlattenedPicture() {
TRACE_EVENT0("cc", "DisplayListRasterSource::GetFlattenedPicture");
gfx::Rect display_list_rect(size_);
SkPictureRecorder recorder;
SkCanvas* canvas = recorder.beginRecording(display_list_rect.width(),
display_list_rect.height());
if (!display_list_rect.IsEmpty())
PlaybackToCanvas(canvas, display_list_rect, display_list_rect, 1.0);
skia::RefPtr<SkPicture> picture =
skia::AdoptRef(recorder.endRecordingAsPicture());
return picture;
}
size_t DisplayListRasterSource::GetPictureMemoryUsage() const {
if (!display_list_)
return 0;
return display_list_->ApproximateMemoryUsage() +
painter_reported_memory_usage_;
}
void DisplayListRasterSource::PerformSolidColorAnalysis(
const gfx::Rect& content_rect,
float contents_scale,
RasterSource::SolidColorAnalysis* analysis) const {
DCHECK(analysis);
TRACE_EVENT0("cc", "DisplayListRasterSource::PerformSolidColorAnalysis");
gfx::Rect layer_rect =
gfx::ScaleToEnclosingRect(content_rect, 1.0f / contents_scale);
layer_rect.Intersect(gfx::Rect(size_));
skia::AnalysisCanvas canvas(layer_rect.width(), layer_rect.height());
RasterForAnalysis(&canvas, layer_rect, 1.0f);
analysis->is_solid_color = canvas.GetColorIfSolid(&analysis->solid_color);
}
void DisplayListRasterSource::GatherPixelRefs(
const gfx::Rect& content_rect,
float contents_scale,
std::vector<skia::PositionPixelRef>* pixel_refs) const {
DCHECK_EQ(0u, pixel_refs->size());
gfx::Rect layer_rect =
gfx::ScaleToEnclosingRect(content_rect, 1.0f / contents_scale);
PixelRefMap::Iterator iterator(layer_rect, display_list_.get());
while (iterator) {
pixel_refs->push_back(*iterator);
++iterator;
}
}
bool DisplayListRasterSource::CoversRect(const gfx::Rect& content_rect,
float contents_scale) const {
if (size_.IsEmpty())
return false;
gfx::Rect layer_rect =
gfx::ScaleToEnclosingRect(content_rect, 1.f / contents_scale);
layer_rect.Intersect(gfx::Rect(size_));
return recorded_viewport_.Contains(layer_rect);
}
gfx::Size DisplayListRasterSource::GetSize() const {
return size_;
}
bool DisplayListRasterSource::IsSolidColor() const {
return is_solid_color_;
}
SkColor DisplayListRasterSource::GetSolidColor() const {
DCHECK(IsSolidColor());
return solid_color_;
}
bool DisplayListRasterSource::HasRecordings() const {
return !!display_list_.get();
}
void DisplayListRasterSource::SetShouldAttemptToUseDistanceFieldText() {
should_attempt_to_use_distance_field_text_ = true;
}
bool DisplayListRasterSource::ShouldAttemptToUseDistanceFieldText() const {
return should_attempt_to_use_distance_field_text_;
}
void DisplayListRasterSource::AsValueInto(
base::trace_event::TracedValue* array) const {
if (display_list_.get())
TracedValue::AppendIDRef(display_list_.get(), array);
}
void DisplayListRasterSource::DidBeginTracing() {
if (display_list_.get())
display_list_->EmitTraceSnapshot();
}
bool DisplayListRasterSource::CanUseLCDText() const {
return can_use_lcd_text_;
}
scoped_refptr<RasterSource> DisplayListRasterSource::CreateCloneWithoutLCDText()
const {
bool can_use_lcd_text = false;
return scoped_refptr<RasterSource>(
new DisplayListRasterSource(this, can_use_lcd_text));
}
} // namespace cc
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