C++ (Cpp) QXcbWindow::xcb_window примеры использования

Пример #1

Файл: qxcbbackingstore.cpp Проект: FlavioFalcao/qt5

void QXcbBackingStore::flush(QWindow *window, const QRegion &region, const QPoint &offset)
{
    if (!m_image || m_image->size().isEmpty())
        return;

    QSize imageSize = m_image->size();

    QRegion clipped = region;
    clipped &= QRect(0, 0, window->width(), window->height());
    clipped &= QRect(0, 0, imageSize.width(), imageSize.height()).translated(-offset);

    QRect bounds = clipped.boundingRect();

    if (bounds.isNull())
        return;

    Q_XCB_NOOP(connection());

    QXcbWindow *platformWindow = static_cast<QXcbWindow *>(window->handle());

    QVector<QRect> rects = clipped.rects();
    for (int i = 0; i < rects.size(); ++i)
        m_image->put(platformWindow->xcb_window(), rects.at(i).topLeft(), rects.at(i).translated(offset));

    Q_XCB_NOOP(connection());

    if (m_syncingResize) {
        xcb_flush(xcb_connection());
        connection()->sync();
        m_syncingResize = false;
        platformWindow->updateSyncRequestCounter();
    }
}

Пример #2

void QXcbNativeBackingStore::flush(QWindow *window, const QRegion &region, const QPoint &offset)
{
    if (m_pixmap.isNull())
        return;

    QSize pixmapSize = m_pixmap.size();

    QRegion clipped = region;
    clipped &= QRect(QPoint(), QHighDpi::toNativePixels(window->size(), window));
    clipped &= QRect(0, 0, pixmapSize.width(), pixmapSize.height()).translated(-offset);

    QRect br = clipped.boundingRect();
    if (br.isNull())
        return;

    QXcbWindow *platformWindow = static_cast<QXcbWindow *>(window->handle());
    if (!platformWindow) {
        qWarning("QXcbBackingStore::flush: QWindow has no platform window (QTBUG-32681)");
        return;
    }

    Window wid = platformWindow->xcb_window();
    Pixmap pid = qt_x11PixmapHandle(m_pixmap);

    QVector<XRectangle> clipRects = qt_region_to_xrectangles(clipped);

#if QT_CONFIG(xrender)
    if (m_translucentBackground)
    {
        XWindowAttributes attrib;
        XGetWindowAttributes(display(), wid, &attrib);
        XRenderPictFormat *format = XRenderFindVisualFormat(display(), attrib.visual);

        Picture srcPic = qt_x11PictureHandle(m_pixmap);
        Picture dstPic = XRenderCreatePicture(display(), wid, format, 0, 0);

        XRenderSetPictureClipRectangles(display(), dstPic, 0, 0, clipRects.constData(), clipRects.size());

        XRenderComposite(display(), PictOpSrc, srcPic, None, dstPic,
                         br.x() + offset.x(), br.y() + offset.y(),
                         0, 0,
                         br.x(), br.y(),
                         br.width(), br.height());

        XRenderFreePicture(display(), dstPic);
    }
    else
#endif
    {
        GC gc = XCreateGC(display(), wid, 0, Q_NULLPTR);

        if (clipRects.size() != 1)
            XSetClipRectangles(display(), gc, 0, 0, clipRects.data(), clipRects.size(), YXBanded);

        XCopyArea(display(), pid, wid, gc, br.x() + offset.x(), br.y() + offset.y(), br.width(), br.height(), br.x(), br.y());
        XFreeGC(display(), gc);
    }


    if (platformWindow->needsSync()) {
        platformWindow->updateSyncRequestCounter();
    } else {
        XFlush(display());
    }
}