Gui: BitmapFactory new static function to make icon overlays with pix…

…maps

src/Gui/BitmapFactory.cpp

@@ -650,13 +650,13 @@ void BitmapFactoryInst::convert(const QImage& p, SoSFImage& img) const
     int width  = (int)size[0];
     int height = (int)size[1];
 
-    for (int y = 0; y < height; y++) 
+    for (int y = 0; y < height; y++)
     {
         unsigned char * line = &bytes[width*numcomponents*(height-(y+1))];
-        for (int x = 0; x < width; x++) 
+        for (int x = 0; x < width; x++)
         {
             QRgb rgb = p.pixel(x,y);
-            switch (numcomponents) 
+            switch (numcomponents)
             {
             default:
                 break;
@@ -699,13 +699,13 @@ void BitmapFactoryInst::convert(const SoSFImage& p, QImage& img) const
 
     img = QImage(width, height, QImage::Format_RGB32);
     QRgb * bits = (QRgb*) img.bits();
-    
-    for (int y = 0; y < height; y++) 
+
+    for (int y = 0; y < height; y++)
     {
         const unsigned char * line = &bytes[width*numcomponents*(height-(y+1))];
-        for (int x = 0; x < width; x++) 
+        for (int x = 0; x < width; x++)
         {
-            switch (numcomponents) 
+            switch (numcomponents)
             {
             default:
             case 1:
@@ -727,3 +727,17 @@ void BitmapFactoryInst::convert(const SoSFImage& p, QImage& img) const
     }
 }
 
+QIcon BitmapFactoryInst::mergePixmap (const QIcon &base, const QPixmap &px, Gui::BitmapFactoryInst::Position position)
+{
+    QIcon overlayedIcon;
+
+    int w = QApplication::style()->pixelMetric(QStyle::PM_ListViewIconSize);
+
+    overlayedIcon.addPixmap(Gui::BitmapFactory().merge(base.pixmap(w, w, QIcon::Normal, QIcon::Off),
+                                                       px,position), QIcon::Normal, QIcon::Off);
+
+    overlayedIcon.addPixmap(Gui::BitmapFactory().merge(base.pixmap(w, w, QIcon::Normal, QIcon::On ),
+                                                       px,position), QIcon::Normal, QIcon::Off);
+
+    return overlayedIcon;
+}

src/Gui/BitmapFactory.h

@@ -91,23 +91,23 @@ class GuiExport BitmapFactoryInst : public Base::Factory
     /** Resizes the area of a pixmap
      * If the new size is greater than the old one the pixmap
      * will be placed in the center. The border area will be made
-     * depending on \a bgmode transparent or opaque. 
+     * depending on \a bgmode transparent or opaque.
      */
     QPixmap resize(int w, int h, const QPixmap& p, Qt::BGMode bgmode) const;
     /** Creates an opaque or transparent area in a pixmap
      * If the background mode is opaque then this method can
-     * be used for drawing a smaller pixmap into pixmap \a p. 
+     * be used for drawing a smaller pixmap into pixmap \a p.
      * Note: To draw a smaller pixmap into another one the
-     * area in the resulting pixmap for the small pixmapmust 
-     * be opaque in every pixel, otherwise the drawing may fail. 
+     * area in the resulting pixmap for the small pixmapmust
+     * be opaque in every pixel, otherwise the drawing may fail.
      *
      * If the background mode is transparent then this method can
      * be used for resizing the pixmap \a p and make the new space
      * transparent.
      */
     QPixmap fillRect(int x, int y, int w, int h, const QPixmap& p, Qt::BGMode) const;
     /** Merges the two pixmaps  \a p1 and \a p2 to one pixmap in
-     * vertical order if \a vertical is true, in horizontal order 
+     * vertical order if \a vertical is true, in horizontal order
      * otherwise. The method resizes the resulting pixmap.
      */
     QPixmap merge(const QPixmap& p1, const QPixmap& p2, bool vertical) const;
@@ -117,7 +117,7 @@ class GuiExport BitmapFactoryInst : public Base::Factory
      * resize the resulting pixmap.
      */
     QPixmap merge(const QPixmap& p1, const QPixmap& p2, Position pos = BitmapFactoryInst::BottomLeft) const;
-    /** Creates a disabled pixmap of the given pixmap \a p by changing the brightness 
+    /** Creates a disabled pixmap of the given pixmap \a p by changing the brightness
      * of all opaque pixels to a higher value.
      */
     QPixmap disabled(const QPixmap& p) const;
@@ -128,6 +128,9 @@ class GuiExport BitmapFactoryInst : public Base::Factory
      */
     void convert(const SoSFImage& img, QImage& out) const;
 
+    /// Helper method to merge a pixmap into one corner of a QIcon
+    static QIcon mergePixmap (const QIcon &base, const QPixmap &px, Gui::BitmapFactoryInst::Position position);
+
 private:
     bool loadPixmap(const QString& path, QPixmap&) const;
     void restoreCustomPaths();