diff options
Diffstat (limited to 'src/gui/image/qpixmap.cpp')
| -rw-r--r-- | src/gui/image/qpixmap.cpp | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/src/gui/image/qpixmap.cpp b/src/gui/image/qpixmap.cpp index f896572..6e13324 100644 --- a/src/gui/image/qpixmap.cpp +++ b/src/gui/image/qpixmap.cpp @@ -112,8 +112,16 @@ void QPixmap::init(int w, int h, Type type) init(w, h, int(type)); } +extern QApplication::Type qt_appType; + void QPixmap::init(int w, int h, int type) { + if (qt_appType == QApplication::Tty) { + qWarning("QPixmap: Cannot create a QPixmap when no GUI is being used"); + data = 0; + return; + } + if ((w > 0 && h > 0) || type == QPixmapData::BitmapType) data = QPixmapData::create(w, h, (QPixmapData::PixelType) type); else @@ -1636,16 +1644,6 @@ QPixmap QPixmap::transformed(const QMatrix &matrix, Qt::TransformationMode mode) {Implicit Data Sharing} documentation. QPixmap objects can also be streamed. - Depending on the system, QPixmap is stored using a RGB32 or a - premultiplied alpha format. If the image has an alpha channel, and - if the system allows, the preferred format is premultiplied alpha. - Note also that QPixmap, unlike QImage, may be hardware dependent. - On X11, Mac and Symbian, a QPixmap is stored on the server side while - a QImage is stored on the client side (on Windows, these two classes - have an equivalent internal representation, i.e. both QImage and - QPixmap are stored on the client side and don't use any GDI - resources). - Note that the pixel data in a pixmap is internal and is managed by the underlying window system. Because QPixmap is a QPaintDevice subclass, QPainter can be used to draw directly onto pixmaps. @@ -2012,7 +2010,7 @@ void QPixmap::detach() } if (data->is_cached && data->ref == 1) - QImagePixmapCleanupHooks::executePixmapDataModificationHooks(pd); + QImagePixmapCleanupHooks::executePixmapDataModificationHooks(data.data()); #if defined(Q_WS_MAC) QMacPixmapData *macData = id == QPixmapData::MacClass ? static_cast<QMacPixmapData*>(pd) : 0; |