35#include <QGraphicsProxyWidget>
45 mWebPage->mainFrame()->setScrollBarPolicy( Qt::Horizontal, Qt::ScrollBarAlwaysOff );
46 mWebPage->mainFrame()->setScrollBarPolicy( Qt::Vertical, Qt::ScrollBarAlwaysOff );
50 QPalette palette = mWebPage->palette();
51 palette.setBrush( QPalette::Base, Qt::transparent );
52 mWebPage->setPalette( palette );
54 connect( mWebPage->mainFrame(), &QWebFrame::javaScriptWindowObjectCleared,
this, &QgsHtmlAnnotation::javascript );
61 c->setSourceFile( mHtmlFile );
67 QFile file( htmlFile );
69 if ( !file.open( QIODevice::ReadOnly | QIODevice::Text ) )
75 QTextStream in( &file );
76#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
77 in.setCodec(
"UTF-8" );
79 mHtmlSource = in.readAll();
104 const double scaleFactor = context.
painter()->device()->logicalDpiX() / 96.0;
105 context.
painter()->scale( scaleFactor, scaleFactor );
108 mWebPage->setViewportSize( size.toSize() );
109 mWebPage->mainFrame()->render( context.
painter() );
116 const QSizeF widgetMinSize = QSizeF( 0, 0 );
122 return QSizeF( 0, 0 );
128 QDomElement formAnnotationElem = doc.createElement( QStringLiteral(
"HtmlAnnotationItem" ) );
129 if ( !mHtmlFile.isEmpty() )
131 formAnnotationElem.setAttribute( QStringLiteral(
"htmlfile" ),
sourceFile() );
135 formAnnotationElem.setAttribute( QStringLiteral(
"htmlsource" ), mHtmlSource );
138 _writeXml( formAnnotationElem, doc, context );
139 elem.appendChild( formAnnotationElem );
144 const QDomElement annotationElem = itemElem.firstChildElement( QStringLiteral(
"AnnotationItem" ) );
145 if ( !annotationElem.isNull() )
147 _readXml( annotationElem, context );
151 if ( !
mapLayer() && itemElem.hasAttribute( QStringLiteral(
"vectorLayer" ) ) )
158 mHtmlFile = itemElem.attribute( QStringLiteral(
"htmlfile" ), QString() );
159 if ( !mHtmlFile.isEmpty() )
165 setHtmlSource( itemElem.attribute( QStringLiteral(
"htmlsource" ), QString() ) );
175 if ( feature.
isValid() && vectorLayer )
183 newText = mHtmlSource;
185 mWebPage->mainFrame()->setHtml( newText );
189void QgsHtmlAnnotation::javascript()
191 QWebFrame *frame = mWebPage->mainFrame();
192 frame->addToJavaScriptWindowObject( QStringLiteral(
"layer" ),
mapLayer() );
The QWebFrame class is a collection of stubs to mimic the API of a QWebFrame on systems where QtWebki...
Abstract base class for annotation items which are drawn over a map.
void appearanceChanged()
Emitted whenever the annotation's appearance changes.
QgsMargins contentsMargin() const
Returns the margins (in millimeters) between the outside of the frame and the annotation content.
void _writeXml(QDomElement &itemElem, QDomDocument &doc, const QgsReadWriteContext &context) const
Writes common annotation properties to a DOM element.
QgsMapLayer * mapLayer() const
Returns the map layer associated with the annotation.
virtual void setAssociatedFeature(const QgsFeature &feature)
Sets the feature associated with the annotation.
QgsFeature associatedFeature() const
Returns the feature associated with the annotation, or an invalid feature if none has been set.
void _readXml(const QDomElement &annotationElem, const QgsReadWriteContext &context)
Reads common annotation properties from a DOM element.
void copyCommonProperties(QgsAnnotation *target) const
Copies common annotation properties to the targe annotation.
void setMapLayer(QgsMapLayer *layer)
Sets the map layer associated with the annotation.
static QList< QgsExpressionContextScope * > globalProjectLayerScopes(const QgsMapLayer *layer)
Creates a list of three scopes: global, layer's project and layer.
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
void setFeature(const QgsFeature &feature)
Convenience function for setting a feature for the context.
static QString replaceExpressionText(const QString &action, const QgsExpressionContext *context, const QgsDistanceArea *distanceArea=nullptr)
This function replaces each expression between [% and %] in the string with the result of its evaluat...
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
bool isValid() const
Returns the validity of this feature.
bool isCanceled() const
Tells whether the operation has been canceled already.
An annotation item that embeds HTML content.
QgsHtmlAnnotation * clone() const override
Clones the annotation, returning a new copy of the annotation reflecting the annotation's current sta...
QString htmlSource() const
Returns html source text.
QgsHtmlAnnotation(QObject *parent=nullptr)
Constructor for QgsHtmlAnnotation.
void writeXml(QDomElement &elem, QDomDocument &doc, const QgsReadWriteContext &context) const override
Writes the annotation state to a DOM element.
void readXml(const QDomElement &itemElem, const QgsReadWriteContext &context) override
Restores the annotation's state from a DOM element.
void setSourceFile(const QString &htmlFile)
Sets the file path for the source HTML file.
QSizeF minimumFrameSize() const override
Returns the minimum frame size for the annotation.
void setHtmlSource(const QString &htmlSource)
Sets the html source directly (not coming from a file)
void setAssociatedFeature(const QgsFeature &feature) override
Sets the feature associated with the annotation.
void renderAnnotation(QgsRenderContext &context, QSizeF size) const override
Renders the annotation's contents to a target /a context at the specified /a size.
QString sourceFile() const
Returns the file path for the source HTML file.
static QgsNetworkAccessManager * instance(Qt::ConnectionType connectionType=Qt::BlockingQueuedConnection)
Returns a pointer to the active QgsNetworkAccessManager for the current thread.
static QgsProject * instance()
Returns the QgsProject singleton instance.
The class is used as a container of context for various read/write operations on other objects.
Contains information about the context of a rendering operation.
QPainter * painter()
Returns the destination QPainter for the render operation.
QgsFeedback * feedback() const
Returns the feedback object that can be queried regularly during rendering to check if rendering shou...
Scoped object for saving and restoring a QPainter object's state.
Represents a vector layer which manages a vector based data sets.
QWebPage subclass which redirects JavaScript errors and console output to the QGIS message log.
As part of the API refactoring and improvements which landed in the Processing API was substantially reworked from the x version This was done in order to allow much of the underlying Processing framework to be ported into c