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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_BASE_X_X11_SOFTWARE_BITMAP_PRESENTER_H_
#define UI_BASE_X_X11_SOFTWARE_BITMAP_PRESENTER_H_
#include "base/component_export.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/scoped_refptr.h"
#include "base/sequence_checker.h"
#include "base/task/sequenced_task_runner.h"
#include "third_party/skia/include/core/SkRefCnt.h"
#include "third_party/skia/include/core/SkSurface.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/native_widget_types.h"
#include "ui/gfx/x/xproto.h"
class SkCanvas;
namespace x11 {
class Connection;
}
namespace ui {
class XShmImagePool;
class COMPONENT_EXPORT(UI_BASE_X) X11SoftwareBitmapPresenter {
public:
// Corresponds to SwapBuffersCallback alias in SoftwareOutputDevice.
using SwapBuffersCallback = base::OnceCallback<void(const gfx::Size&)>;
X11SoftwareBitmapPresenter(x11::Connection& connection,
gfx::AcceleratedWidget widget,
bool enable_multibuffering);
X11SoftwareBitmapPresenter(const X11SoftwareBitmapPresenter&) = delete;
X11SoftwareBitmapPresenter& operator=(const X11SoftwareBitmapPresenter&) =
delete;
~X11SoftwareBitmapPresenter();
void Resize(const gfx::Size& pixel_size);
SkCanvas* GetSkCanvas();
void EndPaint(const gfx::Rect& damage_rect);
void OnSwapBuffers(SwapBuffersCallback swap_ack_callback);
int MaxFramesPending() const;
private:
// Draw |data| over |widget|'s parent-relative background, and write the
// resulting image to |widget|. Returns true on success.
static bool CompositeBitmap(x11::Connection* connection,
x11::Drawable widget,
int x,
int y,
int width,
int height,
int depth,
x11::GraphicsContext gc,
const void* data);
bool ShmPoolReady() const;
x11::Window widget_;
raw_ref<x11::Connection> connection_;
x11::GraphicsContext gc_{};
x11::VisualId visual_{};
int depth_ = 0;
const bool enable_multibuffering_;
// If nonzero, indicates that the widget should be drawn over its
// parent-relative background.
uint8_t composite_ = 0;
std::unique_ptr<ui::XShmImagePool> shm_pool_;
bool needs_swap_ = false;
sk_sp<SkSurface> surface_;
gfx::Size viewport_pixel_size_;
SEQUENCE_CHECKER(sequence_checker_);
};
} // namespace ui
#endif // UI_BASE_X_X11_SOFTWARE_BITMAP_PRESENTER_H_
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