示例#1
0
void QXcbCursor::changeCursor(QCursor *cursor, QWindow *widget)
{
    QXcbWindow *w = 0;
    if (widget && widget->handle())
        w = static_cast<QXcbWindow *>(widget->handle());
    else
        // No X11 cursor control when there is no widget under the cursor
        return;

    xcb_cursor_t c = XCB_CURSOR_NONE;
    bool isBitmapCursor = false;

    if (cursor) {
        const Qt::CursorShape shape = cursor->shape();
        isBitmapCursor = shape == Qt::BitmapCursor;

        if (!isBitmapCursor) {
            const QXcbCursorCacheKey key(*cursor);
            CursorHash::iterator it = m_cursorHash.find(key);
            if (it == m_cursorHash.end()) {
                it = m_cursorHash.insert(key, createFontCursor(shape));
            }
            c = it.value();
        } else {
            // Do not cache bitmap cursors, as otherwise they have unclear
            // lifetime (we effectively leak xcb_cursor_t).
            c = createBitmapCursor(cursor);
        }
    }

    w->setCursor(c, isBitmapCursor);
}
示例#2
0
void QXcbCursor::changeCursor(QCursor *cursor, QWindow *widget)
{
    QXcbWindow *w = 0;
    if (widget && widget->handle())
        w = static_cast<QXcbWindow *>(widget->handle());
    else
        // No X11 cursor control when there is no widget under the cursor
        return;

    xcb_cursor_t c = XCB_CURSOR_NONE;
    if (cursor) {
        const QXcbCursorCacheKey key(*cursor);
        CursorHash::iterator it = m_cursorHash.find(key);
        if (it == m_cursorHash.end()) {
            const Qt::CursorShape shape = cursor->shape();
            it = m_cursorHash.insert(key, shape == Qt::BitmapCursor ? createBitmapCursor(cursor) : createFontCursor(shape));
        }
        c = it.value();
    }

    w->setCursor(c);
}