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html identify results: catch loadFinished only once

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jef-n committed May 3, 2013
1 parent adb4021 commit 93faa76d16723b76ee1e0cff57fafbc936495432
Showing with 64 additions and 59 deletions.
  1. +63 −57 src/app/qgsidentifyresultsdialog.cpp
  2. +1 −2 src/app/qgsidentifyresultsdialog.h
@@ -54,15 +54,12 @@ QgsIdentifyResultsWebView::QgsIdentifyResultsWebView( QWidget *parent ) : QWebVi
{
setSizePolicy( QSizePolicy::MinimumExpanding, QSizePolicy::Minimum );
page()->setNetworkAccessManager( QgsNetworkAccessManager::instance() );
page()->setLinkDelegationPolicy( QWebPage::DelegateAllLinks );
// page()->setLinkDelegationPolicy( QWebPage::DelegateAllLinks );
page()->setLinkDelegationPolicy( QWebPage::DontDelegateLinks );
settings()->setAttribute( QWebSettings::LocalContentCanAccessRemoteUrls, true );
#ifdef QGISDEBUG
settings()->setAttribute( QWebSettings::DeveloperExtrasEnabled, true );
#endif
connect( this->page()->mainFrame(), SIGNAL( contentsSizeChanged( const QSize & ) ),
this, SLOT( handleContentsSizeChanged( const QSize & ) ) );
connect( this->page(), SIGNAL( loadFinished( bool ) ) ,
this, SLOT( loadFinished( bool ) ) );
}

void QgsIdentifyResultsWebView::print( void )
@@ -78,14 +75,14 @@ void QgsIdentifyResultsWebView::print( void )
void QgsIdentifyResultsWebView::contextMenuEvent( QContextMenuEvent *e )
{
QMenu *menu = page()->createStandardContextMenu();
if ( menu )
{
QAction *action = new QAction( tr( "Print" ), this );
connect( action, SIGNAL( triggered() ), this, SLOT( print() ) );
menu->addAction( action );
menu->exec( e->globalPos() );
delete menu;
}
if ( !menu )
return;

QAction *action = new QAction( tr( "Print" ), this );
connect( action, SIGNAL( triggered() ), this, SLOT( print() ) );
menu->addAction( action );
menu->exec( e->globalPos() );
delete menu;
}

// QgsIdentifyResultsWebView size:
@@ -104,7 +101,7 @@ void QgsIdentifyResultsWebView::contextMenuEvent( QContextMenuEvent *e )
// 2) contentsSize() is 0,0 until a page is loaded. If there are no external
// resources (like images) used, contentsSize() is available immediately
// after setHtml(), otherwise the contentSize() is 0,0 until the page is
// loaded and contentsSizeChanged () is emited.
// loaded and contentsSizeChanged () is emitted.
//
// 3) If QgsIdentifyResultsWebView is resized (on page load) after it was inserted into
// QTreeWidget, the row does not reflect that change automaticaly and
@@ -118,15 +115,15 @@ void QgsIdentifyResultsWebView::contextMenuEvent( QContextMenuEvent *e )
// (image) the layout gets somehow confused - wrong positions, overlapped (Qt
// bug?) until next QTreeWidget resize.

// TODO(?): if the results dialog is resized to smaller heigh, existing
// TODO(?): if the results dialog is resized to smaller height, existing
// QgsIdentifyResultsWebView are not (and must not be!) resized and scrolling becomes a bit
// unpleasant until next identify. AFAIK it could only be solved using
// QItemDelegate.

// size hint according to content
QSize QgsIdentifyResultsWebView::sizeHint() const
{
QSize s = this->page()->mainFrame()->contentsSize();
QSize s = page()->mainFrame()->contentsSize();
QgsDebugMsg( QString( "content size: %1 x %2" ).arg( s.width() ).arg( s.height() ) );
int height = s.height();

@@ -142,15 +139,17 @@ QSize QgsIdentifyResultsWebView::sizeHint() const
QWidget *widget = qobject_cast<QWidget *>( parent() );
if ( widget )
{
int max = widget->size().height() * 0.9;
int max = widget->size().height() * 0.9;
QgsDebugMsg( QString( "parent widget height = %1 max height = %2" ).arg( widget->size().height() ).arg( max ) );
if ( height > max ) height = max;
if ( height > max )
height = max;
}
else
{
QgsDebugMsg( "parent not available" ) ;
}
}

s = QSize( size().width(), height );
QgsDebugMsg( QString( "size: %1 x %2" ).arg( s.width() ).arg( s.height() ) );
return s;
@@ -190,20 +189,22 @@ QgsIdentifyResultsWebViewItem::QgsIdentifyResultsWebViewItem( QTreeWidget *treeW
mWebView = new QgsIdentifyResultsWebView( treeWidget );
mWebView->hide();
setText( 0, tr( "Loading..." ) );
connect( mWebView, SIGNAL( loadFinished( bool ) ) ,
this, SLOT( loadFinished( bool ) ) );
connect( mWebView->page(), SIGNAL( loadFinished( bool ) ), this, SLOT( loadFinished( bool ) ) );
}

void QgsIdentifyResultsWebViewItem::loadFinished( bool ok )
{
Q_UNUSED( ok );
QgsDebugMsg( "Entered" );
Q_UNUSED( ok );

mWebView->show();
treeWidget()->setItemWidget( this, 0, mWebView );

// Span columns to save some space, must be after setItemWidget() to take efect.
setFirstColumnSpanned( true );

disconnect( mWebView->page(), SIGNAL( loadFinished( bool ) ), this, SLOT( loadFinished( bool ) ) );

}

// Tree hierarchy
@@ -283,13 +284,13 @@ QgsIdentifyResultsDialog::~QgsIdentifyResultsDialog()
delete mActionPopup;
}

QTreeWidgetItem *QgsIdentifyResultsDialog::layerItem( QObject *layer )
QTreeWidgetItem *QgsIdentifyResultsDialog::layerItem( QObject *object )
{
for ( int i = 0; i < lstResults->topLevelItemCount(); i++ )
{
QTreeWidgetItem *item = lstResults->topLevelItem( i );

if ( item->data( 0, Qt::UserRole ).value<QObject*>() == layer )
if ( item->data( 0, Qt::UserRole ).value<QObject *>() == object )
return item;
}

@@ -457,10 +458,12 @@ void QgsIdentifyResultsDialog::addFeature( QgsRasterLayer *layer,
<< QgsRaster::IdentifyFormatValue;
foreach ( QgsRaster::IdentifyFormat f, formats )
{
if ( !( QgsRasterDataProvider::identifyFormatToCapability( f ) & capabilities ) ) continue;
if ( !( QgsRasterDataProvider::identifyFormatToCapability( f ) & capabilities ) )
continue;
formatCombo->addItem( QgsRasterDataProvider::identifyFormatLabel( f ), f );
formatCombo->setItemData( formatCombo->count() - 1, qVariantFromValue(( void * )layer ), Qt::UserRole + 1 );
if ( currentFormat == f ) formatCombo->setCurrentIndex( formatCombo->count() - 1 );
formatCombo->setItemData( formatCombo->count() - 1, qVariantFromValue( qobject_cast<QObject *>( layer ) ), Qt::UserRole + 1 );
if ( currentFormat == f )
formatCombo->setCurrentIndex( formatCombo->count() - 1 );
}

if ( formatCombo->count() > 1 )
@@ -469,8 +472,7 @@ void QgsIdentifyResultsDialog::addFeature( QgsRasterLayer *layer,
QTreeWidgetItem *formatItem = new QTreeWidgetItem( QStringList() << tr( "Format" ) );
layItem->addChild( formatItem );
lstResults->setItemWidget( formatItem, 1, formatCombo );
connect( formatCombo, SIGNAL( currentIndexChanged( int ) ),
this, SLOT( formatChanged( int ) ) );
connect( formatCombo, SIGNAL( currentIndexChanged( int ) ), this, SLOT( formatChanged( int ) ) );
}
else
{
@@ -511,7 +513,6 @@ void QgsIdentifyResultsDialog::addFeature( QgsRasterLayer *layer,
QgsIdentifyResultsWebViewItem *attrItem = new QgsIdentifyResultsWebViewItem( lstResults );
featItem->addChild( attrItem ); // before setHtml()!
attrItem->setHtml( attributes.begin().value() );
connect( attrItem->webView(), SIGNAL( linkClicked( const QUrl & ) ), this, SLOT( openUrl( const QUrl & ) ) );
}
else
{
@@ -676,7 +677,7 @@ void QgsIdentifyResultsDialog::contextMenuEvent( QContextMenuEvent* event )
mActionPopup = new QMenu();

int idx = -1;
//QTreeWidgetItem *featItem = featureItem( item );
// QTreeWidgetItem *featItem = featureItem( item );
QgsIdentifyResultsFeatureItem *featItem = dynamic_cast<QgsIdentifyResultsFeatureItem *>( featureItem( item ) );
if ( featItem )
{
@@ -883,10 +884,11 @@ QTreeWidgetItem *QgsIdentifyResultsDialog::featureItem( QTreeWidgetItem *item )
else
{
// top level layer item, return feature item if only one

//if ( item->childCount() > 1 )
// return 0;
//featItem = item->child( 0 );
#if 0
if ( item->childCount() > 1 )
return 0;
featItem = item->child( 0 );
#endif

int count = 0;

@@ -896,10 +898,13 @@ QTreeWidgetItem *QgsIdentifyResultsDialog::featureItem( QTreeWidgetItem *item )
if ( fi )
{
count++;
if ( !featItem ) featItem = fi;
if ( !featItem )
featItem = fi;
}
}
if ( count != 1 ) return 0;

if ( count != 1 )
return 0;
}

return featItem;
@@ -1124,7 +1129,8 @@ void QgsIdentifyResultsDialog::highlightFeature( QTreeWidgetItem *item )
if ( mHighlights.contains( featItem ) )
return;

if ( !featItem->feature().geometry() || featItem->feature().geometry()->wkbType() == QGis::WKBUnknown ) return;
if ( !featItem->feature().geometry() || featItem->feature().geometry()->wkbType() == QGis::WKBUnknown )
return;

QgsHighlight *h = new QgsHighlight( mCanvas, featItem->feature().geometry(), layer );
if ( h )
@@ -1144,9 +1150,7 @@ void QgsIdentifyResultsDialog::zoomToFeature()
QgsVectorLayer *vlayer = vectorLayer( item );
QgsRasterLayer *rlayer = rasterLayer( item );
if ( !vlayer && !rlayer )
{
return;
}

layer = vlayer ? ( QgsMapLayer * )vlayer : ( QgsMapLayer * )rlayer;

@@ -1305,12 +1309,14 @@ void QgsIdentifyResultsDialog::copyFeatureAttributes()
else if ( rlayer )
{
QTreeWidgetItem *featItem = featureItem( lstResults->currentItem() );
if ( !featItem ) return;
if ( !featItem )
return;

for ( int i = 0; i < featItem->childCount(); i++ )
{
QTreeWidgetItem *item = featItem->child( i );
if ( item->childCount() > 0 ) continue;
if ( item->childCount() > 0 )
continue;
text += QString( "%1: %2\n" ).arg( item->data( 0, Qt::DisplayRole ).toString() ).arg( item->data( 1, Qt::DisplayRole ).toString() );
}
}
@@ -1324,31 +1330,25 @@ void QgsIdentifyResultsDialog::copyGetFeatureInfoUrl()
QClipboard *clipboard = QApplication::clipboard();
QTreeWidgetItem *item = lstResults->currentItem();
QTreeWidgetItem *layItem = layerItem( item );
if ( !layItem ) { return; }
if ( !layItem )
return;
clipboard->setText( layItem->data( 0, GetFeatureInfoUrlRole ).toString() );
}

void QgsIdentifyResultsDialog::openUrl( const QUrl &url )
{
if ( !QDesktopServices::openUrl( url ) )
{
QMessageBox::warning( this, tr( "Could not open url" ), tr( "Could not open URL '%1'" ).arg( url.toString() ) );
}
}

void QgsIdentifyResultsDialog::printCurrentItem()
{
QTreeWidgetItem *item = lstResults->currentItem();
if ( !item ) { return; }
if ( !item )
return;

// There should only be one HTML item / result
QgsIdentifyResultsWebViewItem *wv = 0;
for ( int i = 0; i < item->childCount(); i++ )
for ( int i = 0; i < item->childCount() && !wv; i++ )
{
wv = dynamic_cast<QgsIdentifyResultsWebViewItem*>( item->child( i ) );
if ( wv != 0 ) { break; }
}
if ( wv == 0 )

if ( !wv )
{
QMessageBox::warning( this, tr( "Cannot not print" ), tr( "Cannot print this item" ) );
return;
@@ -1395,27 +1395,33 @@ void QgsIdentifyResultsDialog::formatChanged( int index )
QgsDebugMsg( "sender is not QComboBox" );
return;
}

QgsRaster::IdentifyFormat format = ( QgsRaster::IdentifyFormat ) combo->itemData( index, Qt::UserRole ).toInt();
QgsDebugMsg( QString( "format = %1" ).arg( format ) );
QgsRasterLayer *layer = ( QgsRasterLayer * )combo->itemData( index, Qt::UserRole + 1 ).value<void *>();
QgsRasterLayer *layer = qobject_cast<QgsRasterLayer *>( combo->itemData( index, Qt::UserRole + 1 ).value<QObject *>() );
if ( !layer )
{
QgsDebugMsg( "cannot get raster layer" );
return;
}

// Store selected identify format in layer
layer->setCustomProperty( "identify/format", QgsRasterDataProvider::identifyFormatName( format ) );

// remove all childs of that layer from results, except the first (format)
QTreeWidgetItem *layItem = layerItem(( QObject * )layer );
QTreeWidgetItem *layItem = layerItem( layer );
if ( !layItem )
{
QgsDebugMsg( "cannot get layer item" );
return;
}

for ( int i = layItem->childCount() - 1; i > 0; i-- )
{
layItem->removeChild( layItem->child( i ) );
QTreeWidgetItem *child = layItem->child( i );
QgsDebugMsg( QString( "remove %1:0x%2" ).arg( i ).arg(( qint64 ) child, 0, 16 ) );
layItem->removeChild( child );
QgsDebugMsg( QString( "removed %1:0x%2" ).arg( i ).arg(( qint64 ) child, 0, 16 ) );
}

// let know QgsMapToolIdentify that format changed
@@ -128,7 +128,7 @@ class QgsIdentifyResultsDialog: public QDialog, private Ui::QgsIdentifyResultsBa
signals:
void selectedFeatureChanged( QgsVectorLayer *, QgsFeatureId featureId );

// Emited when raster identify format of a layer changed
// Emitted when raster identify format of a layer changed
void formatChanged( QgsRasterLayer *layer );

void copyToClipboard( QgsFeatureStore& featureStore );
@@ -182,7 +182,6 @@ class QgsIdentifyResultsDialog: public QDialog, private Ui::QgsIdentifyResultsBa

void formatChanged( int index );

void openUrl( const QUrl &url );
void printCurrentItem();

private:

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