void QgsComposerHtml::recalculateFrameSizes()
{
if ( frameCount() < 1 ) return;
QSize contentsSize = mWebPage->mainFrame()->contentsSize();
//find maximum frame width
double maxWidth = maxFrameWidth();
//set content width to match maximum frame width
contentsSize.setWidth( maxWidth * mHtmlUnitsToMM );
mWebPage->setViewportSize( contentsSize );
mSize.setWidth( contentsSize.width() / mHtmlUnitsToMM );
mSize.setHeight( contentsSize.height() / mHtmlUnitsToMM );
if ( contentsSize.isValid() )
{
renderCachedImage();
}
QgsComposerMultiFrame::recalculateFrameSizes();
emit changed();
}
void QgsLayoutItemHtml::loadHtml( const bool useCache, const QgsExpressionContext *context )
{
if ( !mWebPage )
{
return;
}
QgsExpressionContext scopedContext = createExpressionContext();
const QgsExpressionContext *evalContext = context ? context : &scopedContext;
QString loadedHtml;
switch ( mContentMode )
{
case QgsLayoutItemHtml::Url:
{
QString currentUrl = mUrl.toString();
//data defined url set?
bool ok = false;
currentUrl = mDataDefinedProperties.valueAsString( QgsLayoutObject::SourceUrl, *evalContext, currentUrl, &ok );
if ( ok )
{
currentUrl = currentUrl.trimmed();
QgsDebugMsg( QString( "exprVal Source Url:%1" ).arg( currentUrl ) );
}
if ( currentUrl.isEmpty() )
{
return;
}
if ( !( useCache && currentUrl == mLastFetchedUrl ) )
{
loadedHtml = fetchHtml( QUrl( currentUrl ) );
mLastFetchedUrl = currentUrl;
}
else
{
loadedHtml = mFetchedHtml;
}
break;
}
case QgsLayoutItemHtml::ManualHtml:
loadedHtml = mHtml;
break;
}
//evaluate expressions
if ( mEvaluateExpressions )
{
loadedHtml = QgsExpression::replaceExpressionText( loadedHtml, evalContext, &mDistanceArea );
}
bool loaded = false;
QEventLoop loop;
connect( mWebPage.get(), &QWebPage::loadFinished, &loop, [&loaded, &loop ] { loaded = true; loop.quit(); } );
connect( mFetcher, &QgsNetworkContentFetcher::finished, &loop, [&loaded, &loop ] { loaded = true; loop.quit(); } );
//reset page size. otherwise viewport size increases but never decreases again
mWebPage->setViewportSize( QSize( maxFrameWidth() * mHtmlUnitsToLayoutUnits, 0 ) );
//set html, using the specified url as base if in Url mode or the project file if in manual mode
const QUrl baseUrl = mContentMode == QgsLayoutItemHtml::Url ?
QUrl( mActualFetchedUrl ) :
QUrl::fromLocalFile( mLayout->project()->fileInfo().absoluteFilePath() );
mWebPage->mainFrame()->setHtml( loadedHtml, baseUrl );
//set user stylesheet
QWebSettings *settings = mWebPage->settings();
if ( mEnableUserStylesheet && ! mUserStylesheet.isEmpty() )
{
QByteArray ba;
ba.append( mUserStylesheet.toUtf8() );
QUrl cssFileURL = QUrl( "data:text/css;charset=utf-8;base64," + ba.toBase64() );
settings->setUserStyleSheetUrl( cssFileURL );
}
else
{
settings->setUserStyleSheetUrl( QUrl() );
}
if ( !loaded )
loop.exec( QEventLoop::ExcludeUserInputEvents );
//inject JSON feature
if ( !mAtlasFeatureJSON.isEmpty() )
{
mWebPage->mainFrame()->evaluateJavaScript( QStringLiteral( "if ( typeof setFeature === \"function\" ) { setFeature(%1); }" ).arg( mAtlasFeatureJSON ) );
//needs an extra process events here to give JavaScript a chance to execute
qApp->processEvents();
}
recalculateFrameSizes();
//trigger a repaint
emit contentsChanged();
}
void QgsComposerHtml::loadHtml( const bool useCache, const QgsExpressionContext *context )
{
if ( !mWebPage )
{
return;
}
QgsExpressionContext scopedContext = createExpressionContext();
const QgsExpressionContext* evalContext = context ? context : &scopedContext;
QString loadedHtml;
switch ( mContentMode )
{
case QgsComposerHtml::Url:
{
QString currentUrl = mUrl.toString();
//data defined url set?
QVariant exprVal;
if ( dataDefinedEvaluate( QgsComposerObject::SourceUrl, exprVal, *evalContext ) )
{
currentUrl = exprVal.toString().trimmed();
QgsDebugMsg( QString( "exprVal Source Url:%1" ).arg( currentUrl ) );
}
if ( currentUrl.isEmpty() )
{
return;
}
if ( !( useCache && currentUrl == mLastFetchedUrl ) )
{
loadedHtml = fetchHtml( QUrl( currentUrl ) );
mLastFetchedUrl = currentUrl;
}
else
{
loadedHtml = mFetchedHtml;
}
break;
}
case QgsComposerHtml::ManualHtml:
loadedHtml = mHtml;
break;
}
//evaluate expressions
if ( mEvaluateExpressions )
{
loadedHtml = QgsExpression::replaceExpressionText( loadedHtml, evalContext, mDistanceArea );
}
mLoaded = false;
//reset page size. otherwise viewport size increases but never decreases again
mWebPage->setViewportSize( QSize( maxFrameWidth() * mHtmlUnitsToMM, 0 ) );
//set html, using the specified url as base if in Url mode or the project file if in manual mode
const QUrl baseUrl = mContentMode == QgsComposerHtml::Url ?
QUrl( mActualFetchedUrl ) :
QUrl::fromLocalFile( QgsProject::instance()->fileInfo().absoluteFilePath() );
mWebPage->mainFrame()->setHtml( loadedHtml, baseUrl );
//set user stylesheet
QWebSettings* settings = mWebPage->settings();
if ( mEnableUserStylesheet && ! mUserStylesheet.isEmpty() )
{
QByteArray ba;
ba.append( mUserStylesheet.toUtf8() );
QUrl cssFileURL = QUrl( "data:text/css;charset=utf-8;base64," + ba.toBase64() );
settings->setUserStyleSheetUrl( cssFileURL );
}
else
{
settings->setUserStyleSheetUrl( QUrl() );
}
while ( !mLoaded )
{
qApp->processEvents();
}
//inject JSON feature
if ( !mAtlasFeatureJSON.isEmpty() )
{
mWebPage->mainFrame()->evaluateJavaScript( QString( "if ( typeof setFeature === \"function\" ) { setFeature(%1); }" ).arg( mAtlasFeatureJSON ) );
//needs an extra process events here to give javascript a chance to execute
qApp->processEvents();
}
recalculateFrameSizes();
//trigger a repaint
emit contentsChanged();
}
void QgsComposerHtml::loadHtml( const bool useCache, const QgsExpressionContext *context )
{
if ( !mWebPage )
{
return;
}
const QgsExpressionContext* evalContext = context;
QScopedPointer< QgsExpressionContext > scopedContext;
if ( !evalContext )
{
scopedContext.reset( createExpressionContext() );
evalContext = scopedContext.data();
}
QString loadedHtml;
switch ( mContentMode )
{
case QgsComposerHtml::Url:
{
QString currentUrl = mUrl.toString();
//data defined url set?
QVariant exprVal;
if ( dataDefinedEvaluate( QgsComposerObject::SourceUrl, exprVal, *evalContext ) )
{
currentUrl = exprVal.toString().trimmed();
QgsDebugMsg( QString( "exprVal Source Url:%1" ).arg( currentUrl ) );
}
if ( currentUrl.isEmpty() )
{
return;
}
if ( !( useCache && currentUrl == mLastFetchedUrl ) )
{
loadedHtml = fetchHtml( QUrl( currentUrl ) );
mLastFetchedUrl = currentUrl;
}
else
{
loadedHtml = mFetchedHtml;
}
break;
}
case QgsComposerHtml::ManualHtml:
loadedHtml = mHtml;
break;
}
//evaluate expressions
if ( mEvaluateExpressions )
{
loadedHtml = QgsExpression::replaceExpressionText( loadedHtml, evalContext, nullptr, mDistanceArea );
}
mLoaded = false;
//reset page size. otherwise viewport size increases but never decreases again
mWebPage->setViewportSize( QSize( maxFrameWidth() * mHtmlUnitsToMM, 0 ) );
//set html, using the specified url as base if in Url mode
mWebPage->mainFrame()->setHtml( loadedHtml, mContentMode == QgsComposerHtml::Url ? QUrl( mActualFetchedUrl ) : QUrl() );
//set user stylesheet
QWebSettings* settings = mWebPage->settings();
if ( mEnableUserStylesheet && ! mUserStylesheet.isEmpty() )
{
QByteArray ba;
ba.append( mUserStylesheet.toUtf8() );
QUrl cssFileURL = QUrl( "data:text/css;charset=utf-8;base64," + ba.toBase64() );
settings->setUserStyleSheetUrl( cssFileURL );
}
else
{
settings->setUserStyleSheetUrl( QUrl() );
}
while ( !mLoaded )
{
qApp->processEvents();
}
recalculateFrameSizes();
//trigger a repaint
emit contentsChanged();
}
