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// Copyright 2021 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.
#ifndef UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_CURSOR_FACTORY_H_
#define UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_CURSOR_FACTORY_H_
#include <string>
#include "base/containers/flat_map.h"
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/scoped_refptr.h"
#include "base/scoped_observation.h"
#include "ui/linux/cursor_theme_manager_observer.h"
#include "ui/linux/linux_ui.h"
#include "ui/ozone/common/bitmap_cursor_factory.h"
#include "ui/ozone/platform/wayland/common/wayland_object.h"
#include "ui/ozone/platform/wayland/host/wayland_cursor.h"
struct wl_cursor_theme;
namespace ui {
class BitmapCursor;
class WaylandConnection;
// CursorFactory implementation for Wayland.
class WaylandCursorFactory : public BitmapCursorFactory,
public CursorThemeManagerObserver,
public WaylandCursorBufferListener {
public:
explicit WaylandCursorFactory(WaylandConnection* connection);
WaylandCursorFactory(const WaylandCursorFactory&) = delete;
WaylandCursorFactory& operator=(const WaylandCursorFactory&) = delete;
~WaylandCursorFactory() override;
// CursorFactory:
void ObserveThemeChanges() override;
// CursorFactory:
scoped_refptr<PlatformCursor> GetDefaultCursor(
mojom::CursorType type) override;
void SetDeviceScaleFactor(float scale) override;
protected:
// Returns the actual wl_cursor record from the currently loaded theme.
// Virtual for tests where themes can be empty.
virtual wl_cursor* GetCursorFromTheme(const std::string& name);
private:
FRIEND_TEST_ALL_PREFIXES(WaylandCursorFactoryTest,
RetainOldThemeUntilNewBufferIsAttached);
struct ThemeData {
ThemeData();
~ThemeData();
wl::Object<wl_cursor_theme> theme;
base::flat_map<mojom::CursorType, scoped_refptr<BitmapCursor>> cache;
};
// CusorThemeManagerObserver:
void OnCursorThemeNameChanged(const std::string& cursor_theme_name) override;
void OnCursorThemeSizeChanged(int cursor_theme_size) override;
// WaylandCursorBufferListener:
void OnCursorBufferAttached(wl_cursor* cursor_data) override;
void ReloadThemeCursors();
void OnThemeLoaded(const std::string& loaded_theme_name,
int loaded_theme_size,
wl_cursor_theme* loaded_theme);
const raw_ptr<WaylandConnection> connection_;
base::ScopedObservation<LinuxUi,
CursorThemeManagerObserver,
&LinuxUi::AddCursorThemeObserver,
&LinuxUi::RemoveCursorThemeObserver>
cursor_theme_observer_{this};
// Name of the current theme.
std::string name_;
// Current size of cursors
int size_ = 24;
// The current scale of the mouse cursor icon.
float scale_ = 1.0f;
std::unique_ptr<ThemeData> current_theme_;
// Holds the reference on the unloaded theme until the cursor is released.
std::unique_ptr<ThemeData> unloaded_theme_;
base::WeakPtrFactory<WaylandCursorFactory> weak_factory_{this};
};
} // namespace ui
#endif // UI_OZONE_PLATFORM_WAYLAND_HOST_WAYLAND_CURSOR_FACTORY_H_
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