Merge branch 'svg-misc' of https://github.com/MaartenBent/wxWidgets

Miscellaneous improvements to wxSVGFileDC, notably add gradient fill
support and shape rendering mode.

See https://github.com/wxWidgets/wxWidgets/pull/1493

interface/wx/dcsvg.h

@@ -5,6 +5,23 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
+/**
+    SVG shape rendering mode.
+
+    These options represent the values defined in the SVG specification:
+    https://svgwg.org/svg2-draft/painting.html#ShapeRenderingProperty
+*/
+enum wxSVGShapeRenderingMode
+{
+    wxSVG_SHAPE_RENDERING_AUTO = 0,
+    wxSVG_SHAPE_RENDERING_OPTIMIZE_SPEED,
+    wxSVG_SHAPE_RENDERING_CRISP_EDGES,
+    wxSVG_SHAPE_RENDERING_GEOMETRIC_PRECISION,
+
+    wxSVG_SHAPE_RENDERING_OPTIMISE_SPEED = wxSVG_SHAPE_RENDERING_OPTIMIZE_SPEED
+};
+
+
 /**
     @class wxSVGFileDC
 
@@ -74,6 +91,17 @@ public:
     */
     void SetBitmapHandler(wxSVGBitmapHandler* handler);
 
+    /**
+        Set the shape rendering mode of the generated SVG.
+        All subsequent drawing calls will have this rendering mode set in the
+        SVG file.
+
+        The default mode is wxSVG_SHAPE_RENDERING_AUTO.
+
+        @since 3.1.3
+    */
+    void SetShapeRenderingMode(wxSVGShapeRenderingMode renderingMode);
+
     /**
         Sets the clipping region for this device context to the intersection of
         the given region described by the parameters of this method and the previously