1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
// Copyright 2015 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 "ui/compositor/canvas_painter.h"
#include "cc/playback/display_item_list.h"
namespace ui {
CanvasPainter::CanvasPainter(SkBitmap* output,
const gfx::Size& paint_size,
float raster_scale,
SkColor clear_color)
: output_(output),
paint_size_(paint_size),
raster_scale_(raster_scale),
clear_color_(clear_color),
list_(new cc::DisplayItemList),
context_(list_.get(), raster_scale, gfx::Rect(paint_size_)) {}
CanvasPainter::~CanvasPainter() {
gfx::Size pixel_size = gfx::ScaleToCeiledSize(paint_size_, raster_scale_);
SkImageInfo info = SkImageInfo::MakeN32(
pixel_size.width(), pixel_size.height(), kPremul_SkAlphaType);
if (!output_->tryAllocPixels(info))
return;
SkCanvas canvas(*output_);
canvas.clear(clear_color_);
canvas.scale(raster_scale_, raster_scale_);
list_->Finalize();
list_->Raster(&canvas, nullptr);
}
} // namespace ui
|
