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// Copyright (C) 2016 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 QWINDOWSCURSOR_H
#define QWINDOWSCURSOR_H
#include <QtCore/qt_windows.h>
#include <qpa/qplatformcursor.h>
#include <QtCore/qsharedpointer.h>
#include <QtCore/qhash.h>
QT_BEGIN_NAMESPACE
struct QWindowsPixmapCursorCacheKey
{
explicit QWindowsPixmapCursorCacheKey(const QCursor &c);
qint64 bitmapCacheKey;
qint64 maskCacheKey;
};
inline bool operator==(const QWindowsPixmapCursorCacheKey &k1, const QWindowsPixmapCursorCacheKey &k2)
{
return k1.bitmapCacheKey == k2.bitmapCacheKey && k1.maskCacheKey == k2.maskCacheKey;
}
inline size_t qHash(const QWindowsPixmapCursorCacheKey &k, size_t seed) noexcept
{
return (size_t(k.bitmapCacheKey) + size_t(k.maskCacheKey)) ^ seed;
}
class CursorHandle
{
Q_DISABLE_COPY_MOVE(CursorHandle)
public:
explicit CursorHandle(HCURSOR hcursor = nullptr) : m_hcursor(hcursor) {}
~CursorHandle()
{
if (m_hcursor)
DestroyCursor(m_hcursor);
}
bool isNull() const { return !m_hcursor; }
HCURSOR handle() const { return m_hcursor; }
private:
const HCURSOR m_hcursor;
};
using CursorHandlePtr = QSharedPointer<CursorHandle>;
class QWindowsCursor : public QPlatformCursor
{
public:
enum class State {
Showing,
Hidden,
Suppressed // Cursor suppressed by touch interaction (Windows 8).
};
struct PixmapCursor {
explicit PixmapCursor(const QPixmap &pix = QPixmap(), const QPoint &h = QPoint()) : pixmap(pix), hotSpot(h) {}
QPixmap pixmap;
QPoint hotSpot;
};
explicit QWindowsCursor(const QPlatformScreen *screen);
void changeCursor(QCursor * widgetCursor, QWindow * widget) override;
void setOverrideCursor(const QCursor &cursor) override;
void clearOverrideCursor() override;
static void enforceOverrideCursor();
static bool hasOverrideCursor() { return m_overriddenCursor != nullptr; }
QPoint pos() const override;
void setPos(const QPoint &pos) override;
QSize size() const override;
static HCURSOR createPixmapCursor(QPixmap pixmap, const QPoint &hotSpot, qreal scaleFactor = 1);
static HCURSOR createPixmapCursor(const PixmapCursor &pc, qreal scaleFactor = 1) { return createPixmapCursor(pc.pixmap, pc.hotSpot, scaleFactor); }
static PixmapCursor customCursor(Qt::CursorShape cursorShape, const QPlatformScreen *screen = nullptr);
static HCURSOR createCursorFromShape(Qt::CursorShape cursorShape, const QPlatformScreen *screen = nullptr);
static QPoint mousePosition();
static State cursorState();
CursorHandlePtr standardWindowCursor(Qt::CursorShape s = Qt::ArrowCursor);
CursorHandlePtr pixmapWindowCursor(const QCursor &c);
QPixmap dragDefaultCursor(Qt::DropAction action) const;
HCURSOR hCursor(const QCursor &c) const;
private:
typedef QHash<Qt::CursorShape, CursorHandlePtr> StandardCursorCache;
typedef QHash<QWindowsPixmapCursorCacheKey, CursorHandlePtr> PixmapCursorCache;
CursorHandlePtr cursorHandle(const QCursor &c);
const QPlatformScreen *const m_screen;
StandardCursorCache m_standardCursorCache;
PixmapCursorCache m_pixmapCursorCache;
mutable QPixmap m_copyDragCursor;
mutable QPixmap m_moveDragCursor;
mutable QPixmap m_linkDragCursor;
mutable QPixmap m_ignoreDragCursor;
static HCURSOR m_overriddenCursor;
static HCURSOR m_overrideCursor;
};
QT_END_NAMESPACE
#endif // QWINDOWSCURSOR_H
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