[server] Implement LAYERFONTCOLOR and ITEMFONTCOLOR

Fixes #21871
Fixes #21870

Funded by: Gis3w

python/core/auto_generated/qgslegendsettings.sip.in

@@ -75,6 +75,30 @@ Returns style
     QColor fontColor() const;
     void setFontColor( const QColor &c );
 
+    QColor layerFontColor() const;
+%Docstring
+Returns layer font color, defaults to fontColor()
+
+.. seealso:: :py:func:`setLayerFontColor`
+
+.. seealso:: :py:func:`fontColor`
+
+.. versionadded:: 3.4.7
+%End
+
+    void setLayerFontColor( const QColor &fontColor );
+%Docstring
+Sets layer font color to ``fontColor``
+Overrides fontColor()
+
+.. seealso:: :py:func:`layerFontColor`
+
+.. seealso:: :py:func:`fontColor`
+
+.. versionadded:: 3.4.7
+%End
+
+
     QSizeF symbolSize() const;
     void setSymbolSize( QSizeF s );
 

src/core/qgslegendrenderer.cpp

@@ -661,9 +661,9 @@ QSizeF QgsLegendRenderer::drawLayerTitleInternal( QgsLayerTreeLayer *nodeLayer,
   double y = point.y();
 
   if ( context && context->painter() )
-    context->painter()->setPen( mSettings.fontColor() );
+    context->painter()->setPen( mSettings.layerFontColor() );
   else if ( painter )
-    painter->setPen( mSettings.fontColor() );
+    painter->setPen( mSettings.layerFontColor() );
 
   QFont layerFont = mSettings.style( nodeLegendStyle( nodeLayer ) ).font();
 

src/core/qgslegendsettings.h

@@ -88,6 +88,24 @@ class CORE_EXPORT QgsLegendSettings
     QColor fontColor() const {return mFontColor;}
     void setFontColor( const QColor &c ) {mFontColor = c;}
 
+    /**
+     * Returns layer font color, defaults to fontColor()
+     * \see setLayerFontColor()
+     * \see fontColor()
+     * \since QGIS 3.4.7
+     */
+    QColor layerFontColor() const {return mLayerFontColor.isValid() ? mLayerFontColor : fontColor() ;}
+
+    /**
+     * Sets layer font color to \a fontColor
+     * Overrides fontColor()
+     * \see layerFontColor()
+     * \see fontColor()
+     * \since QGIS 3.4.7
+     */
+    void setLayerFontColor( const QColor &fontColor ) {mLayerFontColor = fontColor;}
+
+
     QSizeF symbolSize() const {return mSymbolSize;}
     void setSymbolSize( QSizeF s ) {mSymbolSize = s;}
 
@@ -306,6 +324,9 @@ class CORE_EXPORT QgsLegendSettings
 
     //! DPI to be used when rendering legend
     int mDpi = 96;
+
+    //! Font color for layers, overrides font color
+    QColor mLayerFontColor;
 };
 
 

src/server/services/wms/qgswmsparameters.cpp

@@ -1139,6 +1139,16 @@ namespace QgsWms
     return mWmsParameters[ QgsWmsParameter::ITEMFONTSIZE ].toDouble();
   }
 
+  QString QgsWmsParameters::itemFontColor() const
+  {
+    return mWmsParameters[ QgsWmsParameter::ITEMFONTCOLOR ].toString();
+  }
+
+  QColor QgsWmsParameters::itemFontColorAsColor() const
+  {
+    return mWmsParameters[ QgsWmsParameter::ITEMFONTCOLOR ].toColor();
+  }
+
   QFont QgsWmsParameters::layerFont() const
   {
     QFont font;
@@ -1193,6 +1203,18 @@ namespace QgsWms
     settings.rstyle( QgsLegendStyle::Style::Subgroup ).setMargin( QgsLegendStyle::Side::Bottom, layerTitleSpaceAsDouble() );
     settings.rstyle( QgsLegendStyle::Style::Subgroup ).setFont( layerFont() );
 
+    if ( !itemFontColor().isEmpty() )
+    {
+      settings.setFontColor( itemFontColorAsColor() );
+    }
+
+    // Ok, this is tricky: because QgsLegendSettings's layerFontColor was added to the API after
+    // fontColor, to fix regressions #21871 and #21870 and the previous behavior was to use fontColor
+    // for the whole legend we need to preserve that behavior.
+    // But, the 2.18 server parameters ITEMFONTCOLOR did not have effect on the layer titles too, so
+    // we set explicitly layerFontColor to black if it's not overridden by LAYERFONTCOLOR argument.
+    settings.setLayerFontColor( layerFontColor().isEmpty() ? QColor( Qt::black ) : layerFontColorAsColor() );
+
     settings.rstyle( QgsLegendStyle::Style::SymbolLabel ).setFont( itemFont() );
     settings.rstyle( QgsLegendStyle::Style::Symbol ).setMargin( QgsLegendStyle::Side::Top, symbolSpaceAsDouble() );
     settings.rstyle( QgsLegendStyle::Style::SymbolLabel ).setMargin( QgsLegendStyle::Side::Left, iconLabelSpaceAsDouble() );

src/server/services/wms/qgswmsparameters.h

@@ -194,7 +194,7 @@ namespace QgsWms
       /**
        * Default destructor for QgsWmsParameter.
        */
-      virtual ~QgsWmsParameter() = default;
+      virtual ~QgsWmsParameter() override = default;
 
       /**
        * Returns TRUE if the parameter is valid, FALSE otherwise.
@@ -363,7 +363,7 @@ namespace QgsWms
         */
       QgsWmsParameters();
 
-      virtual ~QgsWmsParameters() = default;
+      virtual ~QgsWmsParameters() override = default;
 
       /**
        * Returns the parameter corresponding to \a name.

tests/src/python/test_qgsserver_wms_getlegendgraphic.py

@@ -735,6 +735,76 @@ class TestQgsServerWMSGetLegendGraphic(QgsServerTestBase):
 
         r, h = self._result(self._execute_request(qs))
         self._img_diff_error(r, h, "WMS_GetLegendGraphic_ScaleSymbol_DefaultScale_2056", max_size_diff=QSize(15, 15))
+    
+    def test_wms_GetLegendGraphic_LAYERFONTCOLOR(self):
+        qs = "?" + "&".join(["%s=%s" % i for i in list({
+            "MAP": urllib.parse.quote(self.projectPath),
+            "SERVICE": "WMS",
+            "VERSION": "1.1.1",
+            "REQUEST": "GetLegendGraphic",
+            "LAYER": "Country,Hello",
+            "FORMAT": "image/png",
+            "HEIGHT": "500",
+            "WIDTH": "500",
+            "CRS": "EPSG:3857",
+            "LAYERFONTCOLOR": "red"
+        }.items())])
+
+        r, h = self._result(self._execute_request(qs))
+        self._img_diff_error(r, h, "WMS_GetLegendGraphic_LAYERFONTCOLOR")
+
+    def test_wms_GetLegendGraphic_ITEMFONTCOLOR(self):
+        qs = "?" + "&".join(["%s=%s" % i for i in list({
+            "MAP": urllib.parse.quote(self.projectPath),
+            "SERVICE": "WMS",
+            "VERSION": "1.1.1",
+            "REQUEST": "GetLegendGraphic",
+            "LAYER": "Country,Hello",
+            "FORMAT": "image/png",
+            "HEIGHT": "500",
+            "WIDTH": "500",
+            "CRS": "EPSG:3857",
+            "ITEMFONTCOLOR": "red",
+        }.items())])
+
+        r, h = self._result(self._execute_request(qs))
+        self._img_diff_error(r, h, "WMS_GetLegendGraphic_ITEMFONTCOLOR")
+
+    def test_wms_GetLegendGraphic_ITEMFONTCOLOR_and_LAYERFONTCOLOR(self):
+        qs = "?" + "&".join(["%s=%s" % i for i in list({
+            "MAP": urllib.parse.quote(self.projectPath),
+            "SERVICE": "WMS",
+            "VERSION": "1.1.1",
+            "REQUEST": "GetLegendGraphic",
+            "LAYER": "Country,Hello",
+            "FORMAT": "image/png",
+            "HEIGHT": "500",
+            "WIDTH": "500",
+            "CRS": "EPSG:3857",
+            "ITEMFONTCOLOR": "red",
+            "LAYERFONTCOLOR": "blue"
+        }.items())])
+
+        r, h = self._result(self._execute_request(qs))
+        self._img_diff_error(r, h, "WMS_GetLegendGraphic_ITEMFONTCOLOR_and_LAYERFONTCOLOR")
+
+    def test_wms_GetLegendGraphic_ITEMFONTCOLOR_and_LAYERFONTCOLOR_hex(self):
+        qs = "?" + "&".join(["%s=%s" % i for i in list({
+            "MAP": urllib.parse.quote(self.projectPath),
+            "SERVICE": "WMS",
+            "VERSION": "1.1.1",
+            "REQUEST": "GetLegendGraphic",
+            "LAYER": "Country,Hello",
+            "FORMAT": "image/png",
+            "HEIGHT": "500",
+            "WIDTH": "500",
+            "CRS": "EPSG:3857",
+            "ITEMFONTCOLOR": r"%23FF0000",
+            "LAYERFONTCOLOR": r"%230000FF"
+        }.items())])
+
+        r, h = self._result(self._execute_request(qs))
+        self._img_diff_error(r, h, "WMS_GetLegendGraphic_ITEMFONTCOLOR_and_LAYERFONTCOLOR")
 
 
 if __name__ == '__main__':