void QgsComposerLabel::paint( QPainter *painter, const QStyleOptionGraphicsItem *itemStyle, QWidget *pWidget )
{
Q_UNUSED( itemStyle );
Q_UNUSED( pWidget );
if ( !painter )
{
return;
}
if ( !shouldDrawItem() )
{
return;
}
drawBackground( painter );
painter->save();
//antialiasing on
painter->setRenderHint( QPainter::Antialiasing, true );
double penWidth = hasFrame() ? ( pen().widthF() / 2.0 ) : 0;
double xPenAdjust = mMarginX < 0 ? -penWidth : penWidth;
double yPenAdjust = mMarginY < 0 ? -penWidth : penWidth;
QRectF painterRect( xPenAdjust + mMarginX, yPenAdjust + mMarginY, rect().width() - 2 * xPenAdjust - 2 * mMarginX, rect().height() - 2 * yPenAdjust - 2 * mMarginY );
if ( mHtmlState )
{
if ( mFirstRender )
{
contentChanged();
mFirstRender = false;
}
painter->scale( 1.0 / mHtmlUnitsToMM / 10.0, 1.0 / mHtmlUnitsToMM / 10.0 );
mWebPage->setViewportSize( QSize( painterRect.width() * mHtmlUnitsToMM * 10.0, painterRect.height() * mHtmlUnitsToMM * 10.0 ) );
mWebPage->settings()->setUserStyleSheetUrl( createStylesheetUrl() );
mWebPage->mainFrame()->render( painter );
}
else
{
const QString textToDraw = displayText();
painter->setFont( mFont );
//debug
//painter->setPen( QColor( Qt::red ) );
//painter->drawRect( painterRect );
QgsComposerUtils::drawText( painter, painterRect, textToDraw, mFont, mFontColor, mHAlignment, mVAlignment, Qt::TextWordWrap );
}
painter->restore();
drawFrame( painter );
if ( isSelected() )
{
drawSelectionBoxes( painter );
}
}
void QgsLayoutItemLabel::draw( QgsLayoutItemRenderContext &context )
{
QPainter *painter = context.renderContext().painter();
painter->save();
// painter is scaled to dots, so scale back to layout units
painter->scale( context.renderContext().scaleFactor(), context.renderContext().scaleFactor() );
double penWidth = frameEnabled() ? ( pen().widthF() / 2.0 ) : 0;
double xPenAdjust = mMarginX < 0 ? -penWidth : penWidth;
double yPenAdjust = mMarginY < 0 ? -penWidth : penWidth;
QRectF painterRect( xPenAdjust + mMarginX, yPenAdjust + mMarginY, rect().width() - 2 * xPenAdjust - 2 * mMarginX, rect().height() - 2 * yPenAdjust - 2 * mMarginY );
switch ( mMode )
{
case ModeHtml:
{
if ( mFirstRender )
{
contentChanged();
mFirstRender = false;
}
painter->scale( 1.0 / mHtmlUnitsToLayoutUnits / 10.0, 1.0 / mHtmlUnitsToLayoutUnits / 10.0 );
mWebPage->setViewportSize( QSize( painterRect.width() * mHtmlUnitsToLayoutUnits * 10.0, painterRect.height() * mHtmlUnitsToLayoutUnits * 10.0 ) );
mWebPage->settings()->setUserStyleSheetUrl( createStylesheetUrl() );
mWebPage->mainFrame()->render( painter );
break;
}
case ModeFont:
{
const QString textToDraw = currentText();
painter->setFont( mFont );
QgsLayoutUtils::drawText( painter, painterRect, textToDraw, mFont, mFontColor, mHAlignment, mVAlignment, Qt::TextWordWrap );
break;
}
}
painter->restore();
}
void QgsComposerLabel::paint( QPainter* painter, const QStyleOptionGraphicsItem* itemStyle, QWidget* pWidget )
{
Q_UNUSED( itemStyle );
Q_UNUSED( pWidget );
if ( !painter )
{
return;
}
if ( !shouldDrawItem() )
{
return;
}
drawBackground( painter );
painter->save();
//antialiasing on
painter->setRenderHint( QPainter::Antialiasing, true );
double penWidth = hasFrame() ? ( pen().widthF() / 2.0 ) : 0;
double xPenAdjust = mMarginX < 0 ? -penWidth : penWidth;
double yPenAdjust = mMarginY < 0 ? -penWidth : penWidth;
QRectF painterRect( xPenAdjust + mMarginX, yPenAdjust + mMarginY, rect().width() - 2 * xPenAdjust - 2 * mMarginX, rect().height() - 2 * yPenAdjust - 2 * mMarginY );
QString textToDraw = displayText();
if ( mHtmlState )
{
painter->scale( 1.0 / mHtmlUnitsToMM / 10.0, 1.0 / mHtmlUnitsToMM / 10.0 );
QWebPage *webPage = new QWebPage();
webPage->setNetworkAccessManager( QgsNetworkAccessManager::instance() );
//Setup event loop and timeout for rendering html
QEventLoop loop;
QTimer timeoutTimer;
timeoutTimer.setSingleShot( true );
//This makes the background transparent. Found on http://blog.qt.digia.com/blog/2009/06/30/transparent-qwebview-or-qwebpage/
QPalette palette = webPage->palette();
palette.setBrush( QPalette::Base, Qt::transparent );
webPage->setPalette( palette );
//webPage->setAttribute(Qt::WA_OpaquePaintEvent, false); //this does not compile, why ?
webPage->setViewportSize( QSize( painterRect.width() * mHtmlUnitsToMM * 10.0, painterRect.height() * mHtmlUnitsToMM * 10.0 ) );
webPage->mainFrame()->setZoomFactor( 10.0 );
webPage->mainFrame()->setScrollBarPolicy( Qt::Horizontal, Qt::ScrollBarAlwaysOff );
webPage->mainFrame()->setScrollBarPolicy( Qt::Vertical, Qt::ScrollBarAlwaysOff );
webPage->settings()->setUserStyleSheetUrl( createStylesheetUrl() );
// QGIS segfaults when rendering web page while in composer if html
// contains images. So if we are not printing the composition, then
// disable image loading
if ( mComposition->plotStyle() != QgsComposition::Print &&
mComposition->plotStyle() != QgsComposition::Postscript )
{
webPage->settings()->setAttribute( QWebSettings::AutoLoadImages, false );
}
//Connect timeout and webpage loadFinished signals to loop
connect( &timeoutTimer, SIGNAL( timeout() ), &loop, SLOT( quit() ) );
connect( webPage, SIGNAL( loadFinished( bool ) ), &loop, SLOT( quit() ) );
//mHtmlLoaded tracks whether the QWebPage has completed loading
//its html contents, set it initially to false. The loadingHtmlFinished slot will
//set this to true after html is loaded.
mHtmlLoaded = false;
connect( webPage, SIGNAL( loadFinished( bool ) ), SLOT( loadingHtmlFinished( bool ) ) );
webPage->mainFrame()->setHtml( textToDraw );
//For very basic html labels with no external assets, the html load will already be
//complete before we even get a chance to start the QEventLoop. Make sure we check
//this before starting the loop
if ( !mHtmlLoaded )
{
// Start a 20 second timeout in case html loading will never complete
timeoutTimer.start( 20000 );
// Pause until html is loaded
loop.exec();
}
webPage->mainFrame()->render( painter );//DELETE WEBPAGE ?
}
else
{