SVG: mix-blend-mode v3

- Enable as default
- Ignore 'normal'

Author: rodlie

src/core/Boxes/boundingbox.cpp

@@ -1584,9 +1584,10 @@ eTask* BoundingBox::saveSVGWithTransform(SvgExporter& exp,
         if (ptr) {
             ele.setAttribute("id", AppSupport::filterId(ptr->prp_getName()));
 
-            if (expPtr->fBlendMix) {
+            const QString blend = skBlendModeToSVG(ptr->getBlendMode());
+            if (expPtr->fBlendMix && blend != "normal") {
                 ele.setAttribute("style",
-                                 QString("mix-blend-mode: %1;").arg(skBlendModeToSVG(ptr->getBlendMode())));
+                                 QString("mix-blend-mode: %1;").arg(blend));
             }
 
             SvgExportHelpers::assignVisibility(*expPtr, ele, visRange);

src/ui/dialogs/exportsvgdialog.cpp

@@ -111,7 +111,7 @@ ExportSvgDialog::ExportSvgDialog(QWidget* const parent,
     mBlendMix = new QCheckBox(tr("Mix Blend Modes"), this);
     mBlendMix->setChecked(AppSupport::getSettings("exportSVG",
                                                   "blendMix",
-                                                  false).toBool());
+                                                  true).toBool());
 
     connect(mBackground, &QCheckBox::stateChanged,
             this, [this] {