cef/libcef/browser/osr/software_output_device_osr.cc

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// Copyright (c) 2014 The Chromium Embedded Framework Authors.
// Portions copyright (c) 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 "libcef/browser/osr/software_output_device_osr.h"
#include "libcef/browser/browser_host_impl.h"
#include "libcef/browser/osr/render_widget_host_view_osr.h"
#include "libcef/browser/thread_util.h"
#include "third_party/skia/src/core/SkDevice.h"
#include "ui/compositor/compositor.h"
#include "ui/gfx/skia_util.h"
CefSoftwareOutputDeviceOSR::CefSoftwareOutputDeviceOSR(
ui::Compositor* compositor,
bool transparent,
const OnPaintCallback& callback)
: transparent_(transparent), callback_(callback), active_(false) {
CEF_REQUIRE_UIT();
DCHECK(!callback_.is_null());
}
CefSoftwareOutputDeviceOSR::~CefSoftwareOutputDeviceOSR() {
CEF_REQUIRE_UIT();
}
void CefSoftwareOutputDeviceOSR::Resize(const gfx::Size& viewport_pixel_size,
float scale_factor) {
CEF_REQUIRE_UIT();
if (viewport_pixel_size_ == viewport_pixel_size)
return;
viewport_pixel_size_ = viewport_pixel_size;
canvas_.reset(NULL);
bitmap_.reset(new SkBitmap);
bitmap_->allocN32Pixels(viewport_pixel_size.width(),
viewport_pixel_size.height(), !transparent_);
if (bitmap_->drawsNothing()) {
NOTREACHED();
bitmap_.reset(NULL);
return;
}
if (transparent_)
bitmap_->eraseARGB(0, 0, 0, 0);
canvas_.reset(new SkCanvas(*bitmap_.get()));
}
SkCanvas* CefSoftwareOutputDeviceOSR::BeginPaint(const gfx::Rect& damage_rect) {
CEF_REQUIRE_UIT();
DCHECK(canvas_.get());
DCHECK(bitmap_.get());
damage_rect_ = damage_rect;
return canvas_.get();
}
void CefSoftwareOutputDeviceOSR::EndPaint() {
CEF_REQUIRE_UIT();
DCHECK(canvas_.get());
DCHECK(bitmap_.get());
if (!bitmap_.get())
return;
viz::SoftwareOutputDevice::EndPaint();
if (active_)
OnPaint(damage_rect_);
}
void CefSoftwareOutputDeviceOSR::SetActive(bool active) {
if (active == active_)
return;
active_ = active;
// Call OnPaint immediately if deactivated while a damage rect is pending.
if (!active_ && !pending_damage_rect_.IsEmpty())
OnPaint(pending_damage_rect_);
}
void CefSoftwareOutputDeviceOSR::Invalidate(const gfx::Rect& damage_rect) {
if (pending_damage_rect_.IsEmpty())
pending_damage_rect_ = damage_rect;
else
pending_damage_rect_.Union(damage_rect);
}
void CefSoftwareOutputDeviceOSR::OnPaint(const gfx::Rect& damage_rect) {
gfx::Rect rect = damage_rect;
if (!pending_damage_rect_.IsEmpty()) {
rect.Union(pending_damage_rect_);
pending_damage_rect_.SetRect(0, 0, 0, 0);
}
rect.Intersect(gfx::Rect(viewport_pixel_size_));
if (rect.IsEmpty())
return;
callback_.Run(rect, bitmap_->width(), bitmap_->height(),
bitmap_->getPixels());
}