GUI: added graph background color customization

src/gui/Src/Gui/AppearanceDialog.cpp

@@ -534,6 +534,7 @@ void AppearanceDialog::colorInfoListInit()
     colorInfoListAppend(tr("True branch line"), "GraphBrtrueColor", "");
     colorInfoListAppend(tr("False branch line"), "GraphBrfalseColor", "");
     colorInfoListAppend(tr("Terminal node shadow"), "GraphRetShadowColor", "");
+    colorInfoListAppend(tr("Background"), "", "GraphBackgroundColor");
 
     colorInfoListAppend(tr("Other:"), "", "");
     colorInfoListAppend(tr("Current Thread"), "ThreadCurrentColor", "ThreadCurrentBackgroundColor");

src/gui/Src/Gui/DisassemblerGraphView.cpp

@@ -316,7 +316,7 @@ void DisassemblerGraphView::paintEvent(QPaintEvent* event)
 
     //Render background
     QRect viewportRect = this->viewport()->rect();
-    p.setBrush(QBrush(disassemblySelectionColor));
+    p.setBrush(QBrush(backgroundColor));
     p.drawRect(viewportRect);
     p.setBrush(Qt::black);
 
@@ -1351,6 +1351,9 @@ void DisassemblerGraphView::colorsUpdatedSlot()
     brtrueColor = ConfigColor("GraphBrtrueColor");
     brfalseColor = ConfigColor("GraphBrfalseColor");
     retShadowColor = ConfigColor("GraphRetShadowColor");
+    backgroundColor = ConfigColor("GraphBackgroundColor");
+    if(!backgroundColor.alpha())
+        backgroundColor = disassemblySelectionColor;
 
     fontChanged();
 }

src/gui/Src/Gui/DisassemblerGraphView.h

@@ -303,6 +303,7 @@ private:
     QColor brtrueColor;
     QColor brfalseColor;
     QColor retShadowColor;
+    QColor backgroundColor;
 protected:
 #include "ActionHelpers.h"
 };

src/gui/Src/Utils/Configuration.cpp

@@ -167,6 +167,7 @@ Configuration::Configuration() : QObject(), noMoreMsgbox(false)
     defaultColors.insert("GraphBrtrueColor", QColor("#387804"));
     defaultColors.insert("GraphBrfalseColor", QColor("#ED4630"));
     defaultColors.insert("GraphRetShadowColor", QColor("#900000"));
+    defaultColors.insert("GraphBackgroundColor", Qt::transparent);
 
     defaultColors.insert("ThreadCurrentColor", QColor("#FFFFFF"));
     defaultColors.insert("ThreadCurrentBackgroundColor", QColor("#000000"));