C++ (Cpp) isWidgetOpaque Examples

Example #1

File: qwindowsurface_qws.cpp Project: tsuibin/emscripten-qt

QWSHtml5CanvasSurface::QWSHtml5CanvasSurface(QWidget *widget)
    : QWSWindowSurface(widget), m_isServerSide(false), m_backingCanvasHandle(-1)
{
#ifdef QT_DEBUG_SURFACE
    qDebug() << "QWSHtml5CanvasSurface::QWSHtml5CanvasSurface(QWidget *widget)" << "(" << (void*)this << ")";
#endif
    SurfaceFlags flags = Buffered;
    if (isWidgetOpaque(widget))
        flags |= Opaque;
    setSurfaceFlags(flags);
}

Example #2

File: qwindowsurface_qws.cpp Project: AlekSi/phantomjs

QWSMemorySurface::QWSMemorySurface(QWidget *w)
    : QWSWindowSurface(w)
{
    SurfaceFlags flags = Buffered;
    if (isWidgetOpaque(w))
        flags |= Opaque;
    setSurfaceFlags(flags);

#ifndef QT_NO_QWS_MULTIPROCESS
    memlock = QWSDisplay::Data::getClientLock();
#endif
}

Example #3

File: qwindowsurface_qws.cpp Project: AlekSi/phantomjs

bool QWSMemorySurface::isValid() const
{
    if (img.isNull())
        return true;

    const QWidget *win = window();
    if (preferredImageFormat(win) != img.format())
        return false;

    if (isOpaque() != isWidgetOpaque(win)) // XXX: use QWidgetPrivate::isOpaque()
        return false;

    return true;
}

Example #4

File: qwindowsurface_qws.cpp Project: AlekSi/phantomjs

// ### copied from qwindowsurface_raster.cpp -- should be cross-platform
void QWSMemorySurface::beginPaint(const QRegion &rgn)
{
    if (!isWidgetOpaque(window())) {
        QPainter p(&img);
        p.setCompositionMode(QPainter::CompositionMode_Source);
        const QVector<QRect> rects = rgn.rects();
        const QColor blank = Qt::transparent;
        for (QVector<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it) {
            QRect r = *it;
#ifdef Q_BACKINGSTORE_SUBSURFACES
            r.translate(painterOffset());
#endif
            p.fillRect(r, blank);
        }
    }
    QWSWindowSurface::beginPaint(rgn);
}

Example #5

File: qwindowsurface_qws.cpp Project: AlekSi/phantomjs

QImage::Format
QWSMemorySurface::preferredImageFormat(const QWidget *widget) const
{
    QScreen *screen = getScreen(widget);
    const int depth = screen->depth();
    const bool opaque = isWidgetOpaque(widget);

    if (!opaque) {
        if (depth <= 12)
            return QImage::Format_ARGB4444_Premultiplied;
        else if (depth <= 15)
            return QImage::Format_ARGB8555_Premultiplied;
        else if (depth <= 16)
            return QImage::Format_ARGB8565_Premultiplied;
        else if (depth <= 18)
            return QImage::Format_ARGB6666_Premultiplied;
        else
            return QImage::Format_ARGB32_Premultiplied;
    }

    QImage::Format format = screen->pixelFormat();
    if (format > QImage::Format_Indexed8) // ### assumes all new image formats supports a QPainter
        return format;

    if (depth <= 12)
        return QImage::Format_RGB444;
    else if (depth <= 15)
        return QImage::Format_RGB555;
    else if (depth <= 16)
        return QImage::Format_RGB16;
    else if (depth <= 18)
        return QImage::Format_RGB666;
    else if (depth <= 24)
        return QImage::Format_RGB888;
    else
        return QImage::Format_ARGB32_Premultiplied;
}