i added an attribute to FbWindow to mark windows which are only used as

"carrier" (maybe a temporarly name?) ... carriers dont need background-updates
.. ever.

this leads to a big performance"boost" over the last commits. before we
updated also the windows which are the hosts for the apps (m_window and
        m_clientarea in FbWinFrame) -> bad idea.

1 files changed, 5 insertions, 0 deletions

diff --git a/src/FbTk/FbWindow.hh b/src/FbTk/FbWindow.hh
index b08df5e..a630f4f 100644
--- a/src/FbTk/FbWindow.hh
+++ b/src/FbTk/FbWindow.hh
@@ -187,6 +187,9 @@ public:
     void setRenderer(FbWindowRenderer &renderer) { m_renderer = &renderer; }
     void sendConfigureNotify(int x, int y, unsigned int width, unsigned int height);
 
+    /// this window is basicly a carrier and does not need background-updates
+    void setCarrier(bool flag) { m_is_carrier = flag; }
+    bool isCarrier() const { return m_is_carrier; }
     /// forces full background change, recalcing of alpha values if necessary
     void updateBackground(bool only_if_alpha);
 
@@ -221,6 +224,8 @@ private:
     Pixmap m_lastbg_pm;
 
     FbWindowRenderer *m_renderer;
+
+    bool m_is_carrier;
 };
 
 bool operator == (Window win, const FbWindow &fbwin);