enable transparency (without alphablit) when pixmap has a different size than widget

diff --git a/lib/gui/epixmap.cpp b/lib/gui/epixmap.cpp
index 3e396c9..69da944 100644 (file)
--- a/lib/gui/epixmap.cpp
+++ b/lib/gui/epixmap.cpp
@@ -40,6 +40,17 @@ void ePixmap::setPixmapFromFile(const char *filename)
        event(evtChangedPixmap);
 }
 
+void ePixmap::checkSize()
+{
+                       /* when we have no pixmap, or a pixmap of different size, we need 
+          to enable transparency in any case. */
+       if (m_pixmap && m_pixmap->size() == size() && !m_alphatest)
+               setTransparent(0);
+       else
+               setTransparent(1);
+               /* fall trough. */
+}
+
 int ePixmap::event(int event, void *data, void *data2)
 {
        switch (event)
@@ -49,8 +60,11 @@ int ePixmap::event(int event, void *data, void *data2)
                ePtr<eWindowStyle> style;
                
                getStyle(style);
-               
-//             eWidget::event(event, data, data2);
+
+//     we don't clear the background before because of performance reasons.
+//     when the pixmap is too small to fix the whole widget area, the widget is
+//     transparent anyway, so the background is already painted.
+//             eWidget::event(event, data, data2); 
                
                gPainter &painter = *(gPainter*)data2;
                if (m_pixmap)
@@ -59,8 +73,12 @@ int ePixmap::event(int event, void *data, void *data2)
                return 0;
        }
        case evtChangedPixmap:
+               checkSize();
                invalidate();
                return 0;
+       case evtChangedSize:
+               checkSize();
+                       /* fall trough. */
        default:
                return eWidget::event(event, data, data2);
        }

diff --git a/lib/gui/epixmap.h b/lib/gui/epixmap.h
index 04196be..5440f11 100644 (file)
--- a/lib/gui/epixmap.h
+++ b/lib/gui/epixmap.h
@@ -16,6 +16,7 @@ public:
 protected:
        ePtr<gPixmap> m_pixmap;
        int event(int event, void *data=0, void *data2=0);
+       void checkSize();
 private:
        enum eLabelEvent
        {