QgsComposerHtml::QgsComposerHtml( QgsComposition* c, bool createUndoCommands )
: QgsComposerMultiFrame( c, createUndoCommands )
, mContentMode( QgsComposerHtml::Url )
, mWebPage( nullptr )
, mLoaded( false )
, mHtmlUnitsToMM( 1.0 )
, mRenderedPage( nullptr )
, mEvaluateExpressions( true )
, mUseSmartBreaks( true )
, mMaxBreakDistance( 10 )
, mExpressionLayer( nullptr )
, mDistanceArea( nullptr )
, mEnableUserStylesheet( false )
, mFetcher( nullptr )
{
mDistanceArea = new QgsDistanceArea();
mHtmlUnitsToMM = htmlUnitsToMM();
mWebPage = new QgsWebPage();
mWebPage->setIdentifier( tr( "Composer HTML item" ) );
mWebPage->mainFrame()->setScrollBarPolicy( Qt::Horizontal, Qt::ScrollBarAlwaysOff );
mWebPage->mainFrame()->setScrollBarPolicy( Qt::Vertical, Qt::ScrollBarAlwaysOff );
//This makes the background transparent. Found on http://blog.qt.digia.com/blog/2009/06/30/transparent-qwebview-or-qwebpage/
QPalette palette = mWebPage->palette();
palette.setBrush( QPalette::Base, Qt::transparent );
mWebPage->setPalette( palette );
mWebPage->setNetworkAccessManager( QgsNetworkAccessManager::instance() );
QObject::connect( mWebPage, SIGNAL( loadFinished( bool ) ), this, SLOT( frameLoaded( bool ) ) );
if ( mComposition )
{
QObject::connect( mComposition, SIGNAL( itemRemoved( QgsComposerItem* ) ), this, SLOT( handleFrameRemoval( QgsComposerItem* ) ) );
}
// data defined strings
mDataDefinedNames.insert( QgsComposerObject::SourceUrl, QString( "dataDefinedSourceUrl" ) );
if ( mComposition && mComposition->atlasMode() == QgsComposition::PreviewAtlas )
{
//a html item added while atlas preview is enabled needs to have the expression context set,
//otherwise fields in the html aren't correctly evaluated until atlas preview feature changes (#9457)
setExpressionContext( mComposition->atlasComposition().feature(), mComposition->atlasComposition().coverageLayer() );
}
//connect to atlas feature changes
//to update the expression context
connect( &mComposition->atlasComposition(), SIGNAL( featureChanged( QgsFeature* ) ), this, SLOT( refreshExpressionContext() ) );
mFetcher = new QgsNetworkContentFetcher();
connect( mFetcher, SIGNAL( finished() ), this, SLOT( frameLoaded() ) );
}
QString QgsComposerHtml::fetchHtml( QUrl url )
{
QgsNetworkContentFetcher fetcher;
//pause until HTML fetch
mLoaded = false;
fetcher.fetchContent( url );
connect( &fetcher, SIGNAL( finished() ), this, SLOT( frameLoaded() ) );
while ( !mLoaded )
{
qApp->processEvents();
}
mFetchedHtml = fetcher.contentAsString();
mActualFetchedUrl = fetcher.reply()->url().toString();
return mFetchedHtml;
}
void ExtractOneThumbnailJob::execute()
{
if ( m_wasCanceled || frameName().exists() )
emit completed();
else {
DB::ImageInfoPtr info = DB::ImageDB::instance()->info(m_fileName);
const int length = info->videoLength();
ImageManager::ExtractOneVideoFrame::extract(m_fileName, length*m_index/10.0, this, SLOT(frameLoaded(QImage)));
}
}
