1 | // Copyright (C) 2022 The Qt Company Ltd. |
2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
3 | |
4 | #pragma once |
5 | |
6 | #include <qpa/qplatformcursor.h> |
7 | #include "qxcbscreen.h" |
8 | #include <xcb/xcb_cursor.h> |
9 | |
10 | #include <QtCore/QCache> |
11 | |
12 | QT_BEGIN_NAMESPACE |
13 | |
14 | #ifndef QT_NO_CURSOR |
15 | |
16 | struct QXcbCursorCacheKey |
17 | { |
18 | explicit QXcbCursorCacheKey(const QCursor &c); |
19 | explicit QXcbCursorCacheKey(Qt::CursorShape s) : shape(s), bitmapCacheKey(0), maskCacheKey(0) {} |
20 | QXcbCursorCacheKey() : shape(Qt::CustomCursor), bitmapCacheKey(0), maskCacheKey(0) {} |
21 | |
22 | Qt::CursorShape shape; |
23 | qint64 bitmapCacheKey; |
24 | qint64 maskCacheKey; |
25 | }; |
26 | |
27 | inline bool operator==(const QXcbCursorCacheKey &k1, const QXcbCursorCacheKey &k2) |
28 | { |
29 | return k1.shape == k2.shape && k1.bitmapCacheKey == k2.bitmapCacheKey && k1.maskCacheKey == k2.maskCacheKey; |
30 | } |
31 | |
32 | inline size_t qHash(const QXcbCursorCacheKey &k, size_t seed) noexcept |
33 | { |
34 | return (size_t(k.shape) + size_t(k.bitmapCacheKey) + size_t(k.maskCacheKey)) ^ seed; |
35 | } |
36 | |
37 | #endif // !QT_NO_CURSOR |
38 | |
39 | class QXcbCursor : public QXcbObject, public QPlatformCursor |
40 | { |
41 | public: |
42 | QXcbCursor(QXcbConnection *conn, QXcbScreen *screen); |
43 | ~QXcbCursor(); |
44 | #ifndef QT_NO_CURSOR |
45 | void changeCursor(QCursor *cursor, QWindow *window) override; |
46 | #endif |
47 | QPoint pos() const override; |
48 | void setPos(const QPoint &pos) override; |
49 | |
50 | QSize size() const override; |
51 | |
52 | void updateContext(); |
53 | |
54 | static void queryPointer(QXcbConnection *c, QXcbVirtualDesktop **virtualDesktop, QPoint *pos, int *keybMask = nullptr); |
55 | |
56 | #ifndef QT_NO_CURSOR |
57 | xcb_cursor_t xcbCursor(const QCursor &c) const |
58 | { return m_cursorHash.value(key: QXcbCursorCacheKey(c), defaultValue: xcb_cursor_t(0)); } |
59 | #endif |
60 | |
61 | private: |
62 | |
63 | #ifndef QT_NO_CURSOR |
64 | typedef QHash<QXcbCursorCacheKey, xcb_cursor_t> CursorHash; |
65 | |
66 | struct CachedCursor |
67 | { |
68 | explicit CachedCursor(xcb_connection_t *conn, xcb_cursor_t c) |
69 | : cursor(c), connection(conn) {} |
70 | ~CachedCursor() { xcb_free_cursor(c: connection, cursor); } |
71 | xcb_cursor_t cursor; |
72 | xcb_connection_t *connection; |
73 | }; |
74 | typedef QCache<QXcbCursorCacheKey, CachedCursor> BitmapCursorCache; |
75 | |
76 | xcb_cursor_t createFontCursor(int cshape); |
77 | xcb_cursor_t createBitmapCursor(QCursor *cursor); |
78 | xcb_cursor_t createNonStandardCursor(int cshape); |
79 | #endif |
80 | |
81 | QXcbScreen *m_screen; |
82 | xcb_cursor_context_t *m_cursorContext; |
83 | #ifndef QT_NO_CURSOR |
84 | CursorHash m_cursorHash; |
85 | BitmapCursorCache m_bitmapCache; |
86 | #endif |
87 | static void cursorThemePropertyChanged(QXcbVirtualDesktop *screen, |
88 | const QByteArray &name, |
89 | const QVariant &property, |
90 | void *handle); |
91 | bool m_callbackForPropertyRegistered; |
92 | }; |
93 | |
94 | QT_END_NAMESPACE |
95 | |