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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QXCBCURSOR_H
#define QXCBCURSOR_H
#include <qpa/qplatformcursor.h>
#include "qxcbscreen.h"
#include <xcb/xcb_cursor.h>
#include <QtCore/QCache>
QT_BEGIN_NAMESPACE
#ifndef QT_NO_CURSOR
struct QXcbCursorCacheKey
{
explicit QXcbCursorCacheKey(const QCursor &c);
explicit QXcbCursorCacheKey(Qt::CursorShape s) : shape(s), bitmapCacheKey(0), maskCacheKey(0) {}
QXcbCursorCacheKey() : shape(Qt::CustomCursor), bitmapCacheKey(0), maskCacheKey(0) {}
Qt::CursorShape shape;
qint64 bitmapCacheKey;
qint64 maskCacheKey;
};
inline bool operator==(const QXcbCursorCacheKey &k1, const QXcbCursorCacheKey &k2)
{
return k1.shape == k2.shape && k1.bitmapCacheKey == k2.bitmapCacheKey && k1.maskCacheKey == k2.maskCacheKey;
}
inline size_t qHash(const QXcbCursorCacheKey &k, size_t seed) noexcept
{
return (size_t(k.shape) + size_t(k.bitmapCacheKey) + size_t(k.maskCacheKey)) ^ seed;
}
#endif // !QT_NO_CURSOR
class QXcbCursor : public QXcbObject, public QPlatformCursor
{
public:
QXcbCursor(QXcbConnection *conn, QXcbScreen *screen);
~QXcbCursor();
#ifndef QT_NO_CURSOR
void changeCursor(QCursor *cursor, QWindow *window) override;
#endif
QPoint pos() const override;
void setPos(const QPoint &pos) override;
QSize size() const override;
void updateContext();
static void queryPointer(QXcbConnection *c, QXcbVirtualDesktop **virtualDesktop, QPoint *pos, int *keybMask = nullptr);
#ifndef QT_NO_CURSOR
xcb_cursor_t xcbCursor(const QCursor &c) const
{ return m_cursorHash.value(QXcbCursorCacheKey(c), xcb_cursor_t(0)); }
#endif
private:
#ifndef QT_NO_CURSOR
typedef QHash<QXcbCursorCacheKey, xcb_cursor_t> CursorHash;
struct CachedCursor
{
explicit CachedCursor(xcb_connection_t *conn, xcb_cursor_t c)
: cursor(c), connection(conn) {}
~CachedCursor() { xcb_free_cursor(connection, cursor); }
xcb_cursor_t cursor;
xcb_connection_t *connection;
};
typedef QCache<QXcbCursorCacheKey, CachedCursor> BitmapCursorCache;
xcb_cursor_t createFontCursor(int cshape);
xcb_cursor_t createBitmapCursor(QCursor *cursor);
xcb_cursor_t createNonStandardCursor(int cshape);
#endif
QXcbScreen *m_screen;
xcb_cursor_context_t *m_cursorContext;
#ifndef QT_NO_CURSOR
CursorHash m_cursorHash;
BitmapCursorCache m_bitmapCache;
#endif
static void cursorThemePropertyChanged(QXcbVirtualDesktop *screen,
const QByteArray &name,
const QVariant &property,
void *handle);
bool m_callbackForPropertyRegistered;
};
QT_END_NAMESPACE
#endif
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