135 lines
4.3 KiB
C++
135 lines
4.3 KiB
C++
// Copyright 2019 The Chromium Embedded Framework Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "libcef/browser/osr/host_display_client_osr.h"
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#include <utility>
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#include "libcef/browser/browser_host_impl.h"
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#include "libcef/browser/osr/render_widget_host_view_osr.h"
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#include "base/memory/shared_memory.h"
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#include "components/viz/common/resources/resource_format.h"
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#include "components/viz/common/resources/resource_sizes.h"
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#include "mojo/public/cpp/system/platform_handle.h"
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#include "services/viz/privileged/mojom/compositing/layered_window_updater.mojom.h"
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#include "skia/ext/platform_canvas.h"
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#include "third_party/skia/include/core/SkColor.h"
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#include "third_party/skia/include/core/SkRect.h"
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#include "third_party/skia/src/core/SkDevice.h"
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#include "ui/gfx/skia_util.h"
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#if defined(OS_WIN)
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#include "skia/ext/skia_utils_win.h"
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#endif
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class CefLayeredWindowUpdaterOSR : public viz::mojom::LayeredWindowUpdater {
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public:
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CefLayeredWindowUpdaterOSR(CefRenderWidgetHostViewOSR* const view,
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viz::mojom::LayeredWindowUpdaterRequest request);
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~CefLayeredWindowUpdaterOSR() override;
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void SetActive(bool active);
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const void* GetPixelMemory() const;
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gfx::Size GetPixelSize() const;
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// viz::mojom::LayeredWindowUpdater implementation.
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void OnAllocatedSharedMemory(const gfx::Size& pixel_size,
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base::UnsafeSharedMemoryRegion region) override;
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void Draw(const gfx::Rect& damage_rect, DrawCallback draw_callback) override;
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private:
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CefRenderWidgetHostViewOSR* const view_;
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mojo::Binding<viz::mojom::LayeredWindowUpdater> binding_;
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bool active_ = false;
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base::WritableSharedMemoryMapping shared_memory_;
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gfx::Size pixel_size_;
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DISALLOW_COPY_AND_ASSIGN(CefLayeredWindowUpdaterOSR);
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};
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CefLayeredWindowUpdaterOSR::CefLayeredWindowUpdaterOSR(
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CefRenderWidgetHostViewOSR* const view,
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viz::mojom::LayeredWindowUpdaterRequest request)
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: view_(view), binding_(this, std::move(request)) {}
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CefLayeredWindowUpdaterOSR::~CefLayeredWindowUpdaterOSR() = default;
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void CefLayeredWindowUpdaterOSR::SetActive(bool active) {
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active_ = active;
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}
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const void* CefLayeredWindowUpdaterOSR::GetPixelMemory() const {
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return shared_memory_.memory();
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}
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gfx::Size CefLayeredWindowUpdaterOSR::GetPixelSize() const {
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return pixel_size_;
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}
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void CefLayeredWindowUpdaterOSR::OnAllocatedSharedMemory(
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const gfx::Size& pixel_size,
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base::UnsafeSharedMemoryRegion region) {
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// Make sure |pixel_size| is sane.
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size_t expected_bytes;
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bool size_result = viz::ResourceSizes::MaybeSizeInBytes(
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pixel_size, viz::ResourceFormat::RGBA_8888, &expected_bytes);
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if (!size_result)
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return;
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pixel_size_ = pixel_size;
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shared_memory_ = region.Map();
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DCHECK(shared_memory_.IsValid());
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}
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void CefLayeredWindowUpdaterOSR::Draw(const gfx::Rect& damage_rect,
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DrawCallback draw_callback) {
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if (active_) {
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const void* memory = GetPixelMemory();
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if (memory) {
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view_->OnPaint(damage_rect, pixel_size_, memory);
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} else {
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LOG(WARNING) << "Failed to read pixels";
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}
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}
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std::move(draw_callback).Run();
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}
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CefHostDisplayClientOSR::CefHostDisplayClientOSR(
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CefRenderWidgetHostViewOSR* const view,
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gfx::AcceleratedWidget widget)
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: viz::HostDisplayClient(widget), view_(view) {}
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CefHostDisplayClientOSR::~CefHostDisplayClientOSR() {}
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void CefHostDisplayClientOSR::SetActive(bool active) {
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active_ = active;
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if (layered_window_updater_) {
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layered_window_updater_->SetActive(active_);
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}
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}
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const void* CefHostDisplayClientOSR::GetPixelMemory() const {
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return layered_window_updater_ ? layered_window_updater_->GetPixelMemory()
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: nullptr;
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}
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gfx::Size CefHostDisplayClientOSR::GetPixelSize() const {
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return layered_window_updater_ ? layered_window_updater_->GetPixelSize()
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: gfx::Size{};
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}
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void CefHostDisplayClientOSR::UseProxyOutputDevice(
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UseProxyOutputDeviceCallback callback) {
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std::move(callback).Run(true);
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}
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void CefHostDisplayClientOSR::CreateLayeredWindowUpdater(
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viz::mojom::LayeredWindowUpdaterRequest request) {
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layered_window_updater_ =
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std::make_unique<CefLayeredWindowUpdaterOSR>(view_, std::move(request));
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layered_window_updater_->SetActive(active_);
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}
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