void QgsComposerLegendWidget::updateLegend()
{
if ( mLegend )
{
mLegend->beginCommand( tr( "Legend updated" ) );
QgisApp* app = QgisApp::instance();
if ( !app )
{
return;
}
//get layer id list
QStringList layerIdList;
QgsMapCanvas* canvas = app->mapCanvas();
if ( canvas )
{
QgsMapRenderer* renderer = canvas->mapRenderer();
if ( renderer )
{
layerIdList = renderer->layerSet();
}
}
//and also group info
QgsAppLegendInterface legendIface( app->legend() );
QList< GroupLayerInfo > groupInfo = legendIface.groupLayerRelationship();
mLegend->model()->setLayerSetAndGroups( layerIdList, groupInfo );
mLegend->endCommand();
}
}
osg::Image* QgsOsgEarthTileSource::createImage( const TileKey& key, ProgressCallback* progress )
{
Q_UNUSED( key );
Q_UNUSED( progress );
osg::ref_ptr<osg::Image> image;
if ( intersects( &key ) )
{
//Get the extents of the tile
double xmin, ymin, xmax, ymax;
key.getExtent().getBounds( xmin, ymin, xmax, ymax );
int tileSize = getPixelsPerTile();
int target_width = tileSize;
int target_height = tileSize;
QgsDebugMsg( "QGIS: xmin:" + QString::number( xmin ) + " ymin:" + QString::number( ymin ) + " ymax:" + QString::number( ymax ) + " ymax " + QString::number( ymax ) );
//Return if parameters are out of range.
if ( target_width <= 0 || target_height <= 0 )
{
return 0;
}
QImage* qImage = createImage( target_width, target_height );
if ( !qImage )
{
return 0;
}
QgsMapRenderer* mainRenderer = mQGisIface->mapCanvas()->mapRenderer();
mMapRenderer->setLayerSet( mainRenderer->layerSet() );
mMapRenderer->setOutputSize( QSize( qImage->width(), qImage->height() ), qImage->logicalDpiX() );
QgsRectangle mapExtent( xmin, ymin, xmax, ymax );
mMapRenderer->setExtent( mapExtent );
QPainter thePainter( qImage );
//thePainter.setRenderHint(QPainter::Antialiasing); //make it look nicer
mMapRenderer->render( &thePainter );
unsigned char* data = qImage->bits();
image = new osg::Image;
//The pixel format is always RGBA to support transparency
image->setImage( qImage->width(), qImage->height(), 1,
4,
GL_BGRA, GL_UNSIGNED_BYTE, //Why not GL_RGBA - QGIS bug?
data,
osg::Image::NO_DELETE, 1 );
image->flipVertical();
}
//Create a transparent image if we don't have an image
if ( !image.valid() )
{
return ImageUtils::createEmptyImage();
}
return image.release();
}
QStringList QgsComposerLegend::layerIdList() const
{
//take layer list from map renderer (to have legend order)
if ( mComposition )
{
QgsMapRenderer* r = mComposition->mapRenderer();
if ( r )
{
return r->layerSet();
}
}
return QStringList();
}
