# HG changeset patch
# User Chris Cannam
# Date 1147178635 0
# Node ID c7ade7ea3cfe9a8aec3ed0cd8df7c49cd8da7397
# Parent  05c41701dc6c22f9f53e0d8c52cfd0cd908cd3c0
* It turns out we can be more efficient in the spectrogram repaints by
  marking the spectrogram layer as non-scrollable, and using the spectrogram
  cache alone instead of both spectrogram and view caches.

diff -r 05c41701dc6c -r c7ade7ea3cfe layer/SpectrogramLayer.h
--- a/layer/SpectrogramLayer.h	Tue May 09 12:13:35 2006 +0000
+++ b/layer/SpectrogramLayer.h	Tue May 09 12:43:55 2006 +0000
@@ -193,6 +193,8 @@
 
     virtual void setLayerDormant(const View *v, bool dormant);
 
+    virtual bool isLayerScrollable(const View *v) const { return false; }
+
 protected slots:
     void cacheInvalid();
     void cacheInvalid(size_t startFrame, size_t endFrame);