small speedups,

[enigma2.git] / lib / gui / epixmap.cpp

diff --git a/lib/gui/epixmap.cpp b/lib/gui/epixmap.cpp
index a0655aa9df8c0a873cac8bde5b65e01c396c00c9..69da944c83e781f7c0d0a0cf7523c66e6e2b3a34 100644 (file)
--- a/lib/gui/epixmap.cpp
+++ b/lib/gui/epixmap.cpp
@@ -1,15 +1,56 @@
 #include <lib/gui/epixmap.h>
+#include <lib/gdi/epng.h>
+#include <lib/gui/ewidgetdesktop.h>
 
-ePixmap::ePixmap(eWidget *parent): eWidget(parent)
+ePixmap::ePixmap(eWidget *parent)
+       :eWidget(parent), m_alphatest(false)
 {
 }
 
+void ePixmap::setAlphatest(bool alphatest)
+{
+       m_alphatest = alphatest;
+       setTransparent(alphatest);
+}
+
 void ePixmap::setPixmap(gPixmap *pixmap)
 {
        m_pixmap = pixmap;
        event(evtChangedPixmap);
 }
 
+void ePixmap::setPixmap(ePtr<gPixmap> &pixmap)
+{
+       m_pixmap = pixmap;
+       event(evtChangedPixmap);
+}
+
+void ePixmap::setPixmapFromFile(const char *filename)
+{
+       loadPNG(m_pixmap, filename);
+       
+       if (!m_pixmap)
+       {
+               eDebug("ePixmap::setPixmapFromFile: loadPNG failed");
+               return;
+       }
+       
+               // TODO: This only works for desktop 0
+       getDesktop(0)->makeCompatiblePixmap(*m_pixmap);
+       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)
@@ -19,18 +60,25 @@ 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)
-                       painter.blit(m_pixmap, ePoint(0, 0));
+                       painter.blit(m_pixmap, ePoint(0, 0), eRect(), m_alphatest?gPainter::BT_ALPHATEST:0);
                
                return 0;
        }
        case evtChangedPixmap:
+               checkSize();
                invalidate();
                return 0;
+       case evtChangedSize:
+               checkSize();
+                       /* fall trough. */
        default:
                return eWidget::event(event, data, data2);
        }