diff options
Diffstat (limited to 'src/gui/image/qpixmap.cpp')
| -rw-r--r-- | src/gui/image/qpixmap.cpp | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/src/gui/image/qpixmap.cpp b/src/gui/image/qpixmap.cpp index fd2c139..ef9be8f 100644 --- a/src/gui/image/qpixmap.cpp +++ b/src/gui/image/qpixmap.cpp @@ -2018,7 +2018,7 @@ void QPixmap::detach() the color table. If this is too expensive an operation, you can use QBitmap::fromImage() instead. - \sa toImage(), {QPixmap#Pixmap Conversion}{Pixmap Conversion} + \sa fromImageReader(), toImage(), {QPixmap#Pixmap Conversion}{Pixmap Conversion} */ QPixmap QPixmap::fromImage(const QImage &image, Qt::ImageConversionFlags flags) { @@ -2033,6 +2033,27 @@ QPixmap QPixmap::fromImage(const QImage &image, Qt::ImageConversionFlags flags) } /*! + \fn QPixmap QPixmap::fromImageReader(QImageReader *imageReader, Qt::ImageConversionFlags flags) + + Create a QPixmap from an image read directly from an \a imageReader. + The \a flags argument is a bitwise-OR of the \l{Qt::ImageConversionFlags}. + Passing 0 for \a flags sets all the default options. + + On some systems, reading an image directly to QPixmap can use less memory than + reading a QImage to convert it to QPixmap. + + \sa fromImage(), toImage(), {QPixmap#Pixmap Conversion}{Pixmap Conversion} +*/ +QPixmap QPixmap::fromImageReader(QImageReader *imageReader, Qt::ImageConversionFlags flags) +{ + QGraphicsSystem *gs = QApplicationPrivate::graphicsSystem(); + QScopedPointer<QPixmapData> data(gs ? gs->createPixmapData(QPixmapData::PixmapType) + : QGraphicsSystem::createDefaultPixmapData(QPixmapData::PixmapType)); + data->fromImageReader(imageReader, flags); + return QPixmap(data.take()); +} + +/*! \fn QPixmap QPixmap::grabWindow(WId window, int x, int y, int width, int height) |