cef/libcef/browser/backing_store_osr.cc

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// Copyright (c) 2012 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 "libcef/browser/backing_store_osr.h"
#include "content/public/browser/render_process_host.h"
#include "ui/gfx/rect.h"
#include "ui/surface/transport_dib.h"
BackingStoreOSR::BackingStoreOSR(content::RenderWidgetHost* widget,
const gfx::Size& size)
: content::BackingStore(widget, size),
device_(SkBitmap::kARGB_8888_Config, size.width(), size.height(), true),
canvas_(&device_) {
canvas_.drawColor(SK_ColorWHITE);
}
void BackingStoreOSR::PaintToBackingStore(
content::RenderProcessHost* process,
TransportDIB::Id bitmap,
const gfx::Rect& bitmap_rect,
const std::vector<gfx::Rect>& copy_rects,
float scale_factor,
const base::Closure& completion_callback,
bool* scheduled_completion_callback) {
*scheduled_completion_callback = false;
TransportDIB* dib = process->GetTransportDIB(bitmap);
if (!dib)
return;
SkBitmap src_bitmap;
src_bitmap.setConfig(SkBitmap::kARGB_8888_Config,
bitmap_rect.width(),
bitmap_rect.height());
src_bitmap.setPixels(dib->memory());
SkPaint copy_paint;
copy_paint.setXfermodeMode(SkXfermode::kSrc_Mode);
for (size_t i = 0; i < copy_rects.size(); i++) {
SkIRect src_rect = SkIRect::MakeXYWH(copy_rects[i].x() - bitmap_rect.x(),
copy_rects[i].y() - bitmap_rect.y(),
copy_rects[i].width(),
copy_rects[i].height());
SkRect paint_rect = SkRect::MakeXYWH(copy_rects[i].x(),
copy_rects[i].y(),
copy_rects[i].width(),
copy_rects[i].height());
canvas_.drawBitmapRect(src_bitmap, &src_rect, paint_rect, &copy_paint);
}
src_bitmap.setPixels(0);
}
bool BackingStoreOSR::CopyFromBackingStore(const gfx::Rect& rect,
skia::PlatformBitmap* output) {
if (!output->Allocate(rect.width(), rect.height(), true))
return false;
SkPaint copy_paint;
copy_paint.setXfermodeMode(SkXfermode::kSrc_Mode);
SkCanvas canvas(output->GetBitmap());
canvas.drawColor(SK_ColorWHITE);
canvas.drawBitmap(device_.accessBitmap(false), 0, 0, &copy_paint);
return true;
}
void BackingStoreOSR::ScrollBackingStore(const gfx::Vector2d& delta,
const gfx::Rect& clip_rect,
const gfx::Size& view_size) {
SkIRect subset_rect = SkIRect::MakeXYWH(clip_rect.x(),
clip_rect.y(),
clip_rect.width(),
clip_rect.height());
device_.accessBitmap(true).scrollRect(&subset_rect, delta.x(), delta.y());
}
const void* BackingStoreOSR::getPixels() const {
return const_cast<BackingStoreOSR*>(this)->device_.
accessBitmap(false).getPixels();
}