/* \internal
Aquire ownership of the shared double buffer pixmap, subject to the
following conditions:
\list 1
\i double buffering is enabled globally.
\i the shared double buffer pixmap is not in use.
\i the size specified in begin() is valid, and within limits.
\endlist
If all of these conditions are met, then this QSharedDoubleBuffer
object becomes the owner of the shared double buffer pixmap. The
shared double buffer pixmap is resize if necessary, and this
function returns a pointer to the pixmap. Ownership must later be
relinquished by calling releasePixmap().
If none of the above conditions are met, this function returns
zero.
\sa releasePixmap()
*/
QPixmap *QSharedDoubleBuffer::getPixmap()
{
if ( isDisabled() ) {
// double buffering disabled globally
return 0;
}
if ( qdb_owner ) {
// shared pixmap already in use
return 0;
}
if ( rw <= 0 || rh <= 0 ||
( hardLimitWidth > 0 && rw >= hardLimitWidth ) ||
( hardLimitHeight > 0 && rh >= hardLimitHeight ) ) {
// invalid size, or hard limit reached
return 0;
}
if ( rw >= sharedLimitWidth || rh >= sharedLimitHeight ) {
if ( flags & Force ) {
rw = QMIN(rw, 8000);
rh = QMIN(rh, 8000);
// need to create a big pixmap and start the cleaner
if ( ! qdb_force_pixmap ) {
qdb_force_pixmap = new QPixmap( rw, rh );
qdb_pixmap_cleanup.add( &qdb_force_pixmap );
} else if ( qdb_force_pixmap->width () < rw ||
qdb_force_pixmap->height() < rh ) {
qdb_force_pixmap->resize( rw, rh );
}
qdb_owner = this;
staticCleaner()->start();
return qdb_force_pixmap;
}
// size is outside shared limit
return 0;
}
if ( ! qdb_shared_pixmap ) {
qdb_shared_pixmap = new QPixmap( rw, rh );
qdb_pixmap_cleanup.add( &qdb_shared_pixmap );
} else if ( qdb_shared_pixmap->width() < rw ||
qdb_shared_pixmap->height() < rh ) {
qdb_shared_pixmap->resize( rw, rh );
}
qdb_owner = this;
return qdb_shared_pixmap;
}
/*!
Returns the application-wide default style sheet. This style sheet is
used by rich text rendering classes such as QSimpleRichText,
QWhatsThis and QMessageBox to define the rendering style and
available tags within rich text documents. It serves also as initial
style sheet for the more complex render widgets QTextEdit and
QTextBrowser.
\sa setDefaultSheet()
*/
QStyleSheet* QStyleSheet::defaultSheet()
{
if (!defaultsheet) {
defaultsheet = new QStyleSheet();
qt_cleanup_stylesheet.add( defaultsheet );
}
return defaultsheet;
}
QEditorFactory * QEditorFactory::defaultFactory()
{
if( defaultfactory == 0 ){
defaultfactory = new QEditorFactory();
q_cleanup_editor_factory.add( &defaultfactory );
}
return defaultfactory;
}
/*!
Sets the application-wide default style sheet to \a sheet, deleting
any style sheet previously set. The ownership is transferred to
QStyleSheet.
\sa defaultSheet()
*/
void QStyleSheet::setDefaultSheet( QStyleSheet* sheet)
{
if ( defaultsheet != sheet ) {
if ( defaultsheet )
qt_cleanup_stylesheet.remove( defaultsheet );
delete defaultsheet;
}
defaultsheet = sheet;
if ( defaultsheet )
qt_cleanup_stylesheet.add( defaultsheet );
}
void QEditorFactory::installDefaultFactory( QEditorFactory * factory )
{
if( factory == 0 || factory == defaultfactory ) return;
if( defaultfactory != 0 ){
q_cleanup_editor_factory.remove( &defaultfactory );
delete defaultfactory;
}
defaultfactory = factory;
q_cleanup_editor_factory.add( &defaultfactory );
}
QPluginManager<WidgetInterface> *widgetManager()
{
if ( !widgetPluginManager ) {
QString pluginDir = "/designer";
#if !defined(UIC)
if ( qwf_plugin_dir )
pluginDir = *qwf_plugin_dir;
#endif
widgetPluginManager = new QPluginManager<WidgetInterface>( IID_Widget, QApplication::libraryPaths(), pluginDir );
cleanup_manager.add( &widgetPluginManager );
#if defined(UIC)
if ( dbnounload )
widgetPluginManager->setAutoUnload( FALSE );
if ( dbpaths ) {
QStringList::ConstIterator it = dbpaths->begin();
for ( ; it != dbpaths->end(); ++it )
widgetPluginManager->addLibraryPath( *it );
}
#endif
}
return widgetPluginManager;
}
