More raster maptips work

It should actually be moved to a generic maplayer implementation.

python/core/auto_generated/raster/qgsrasterlayer.sip.in

@@ -448,6 +448,24 @@ to be drawn outside the data extent.
     virtual QgsMapLayerElevationProperties *elevationProperties();
 
 
+    QString mapTipTemplate() const;
+%Docstring
+The mapTip is a pretty, html representation for feature information.
+
+It may also contain embedded expressions.
+
+.. versionadded:: 3.30
+%End
+
+    void setMapTipTemplate( const QString &mapTip );
+%Docstring
+The mapTip is a pretty, html representation for feature information.
+
+It may also contain embedded expressions.
+
+.. versionadded:: 3.30
+%End
+
   public slots:
     void showStatusMessage( const QString &message );
 
@@ -467,6 +485,14 @@ Emitted when the layer's subset string has changed.
 .. versionadded:: 3.12
 %End
 
+    void mapTipTemplateChanged();
+%Docstring
+Emitted when the map tip changes
+
+.. versionadded:: 3.30
+%End
+
+
 
   protected:
     virtual bool readSymbology( const QDomNode &node, QString &errorMessage, QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories = QgsMapLayer::AllStyleCategories );

src/core/raster/qgsrasterlayer.cpp

@@ -1213,6 +1213,21 @@ QgsMapLayerElevationProperties *QgsRasterLayer::elevationProperties()
   return mElevationProperties;
 }
 
+QString QgsRasterLayer::mapTipTemplate() const
+{
+  return mMapTipTemplate;
+}
+
+void QgsRasterLayer::setMapTipTemplate( const QString &mapTip )
+{
+  if ( mMapTipTemplate == mapTip )
+    return;
+
+  mMapTipTemplate = mapTip;
+  emit mapTipTemplateChanged();
+
+}
+
 void QgsRasterLayer::setContrastEnhancement( QgsContrastEnhancement::ContrastEnhancementAlgorithm algorithm, QgsRasterMinMaxOrigin::Limits limits, const QgsRectangle &extent, int sampleSize, bool generateLookupTableFlag )
 {
   setContrastEnhancement( algorithm,

src/core/raster/qgsrasterlayer.h

@@ -76,6 +76,9 @@ typedef QList < QPair< QString, QColor > > QgsLegendColorList;
 class CORE_EXPORT QgsRasterLayer : public QgsMapLayer, public QgsAbstractProfileSource
 {
     Q_OBJECT
+
+    Q_PROPERTY( QString mapTipTemplate READ mapTipTemplate WRITE setMapTipTemplate NOTIFY mapTipTemplateChanged )
+
   public:
 
     //! \brief Default sample size (number of pixels) for estimated statistics/histogram calculation
@@ -491,6 +494,24 @@ class CORE_EXPORT QgsRasterLayer : public QgsMapLayer, public QgsAbstractProfile
     QgsMapLayerTemporalProperties *temporalProperties() override;
     QgsMapLayerElevationProperties *elevationProperties() override;
 
+    /**
+     * The mapTip is a pretty, html representation for feature information.
+     *
+     * It may also contain embedded expressions.
+     *
+     * \since QGIS 3.30
+     */
+    QString mapTipTemplate() const;
+
+    /**
+     * The mapTip is a pretty, html representation for feature information.
+     *
+     * It may also contain embedded expressions.
+     *
+     * \since QGIS 3.30
+     */
+    void setMapTipTemplate( const QString &mapTip );
+
   public slots:
     void showStatusMessage( const QString &message );
 
@@ -509,6 +530,14 @@ class CORE_EXPORT QgsRasterLayer : public QgsMapLayer, public QgsAbstractProfile
      */
     void subsetStringChanged();
 
+    /**
+     * Emitted when the map tip changes
+     *
+     * \since QGIS 3.30
+     */
+    void mapTipTemplateChanged();
+
+
 
   protected:
     bool readSymbology( const QDomNode &node, QString &errorMessage, QgsReadWriteContext &context, QgsMapLayer::StyleCategories categories = QgsMapLayer::AllStyleCategories ) override;
@@ -608,6 +637,8 @@ class CORE_EXPORT QgsRasterLayer : public QgsMapLayer, public QgsAbstractProfile
 
     QDomDocument mOriginalStyleDocument;
     QDomElement mOriginalStyleElement;
+
+    QString mMapTipTemplate;
 };
 
 // clazy:excludeall=qstring-allocations