# HG changeset patch
# User Chris Cannam
# Date 1236335010 0
# Node ID fe134ec37a2a63bb572278d58746c87dcebf913f
# Parent  1c6439ef99d67c9c20f45cf1f4a3c2ceacb5d153
* fix unsigned overflow causing spectrogram to "disappear" in some
  resolution and scroll combinations

diff -r 1c6439ef99d6 -r fe134ec37a2a layer/SpectrogramLayer.cpp
--- a/layer/SpectrogramLayer.cpp	Tue Mar 03 21:48:03 2009 +0000
+++ b/layer/SpectrogramLayer.cpp	Fri Mar 06 10:23:30 2009 +0000
@@ -2173,7 +2173,7 @@
 
 //    std::cerr << "(giving actual minFreq " << minFreq << " and display minFreq " << displayMinFreq << ")" << std::endl;
 
-    size_t increment = getWindowIncrement();
+    int increment = getWindowIncrement();
     
     bool logarithmic = (m_frequencyScale == LogFrequencyScale);
 /*
@@ -2663,6 +2663,10 @@
             
         for (int sx = sx0; sx < sx1; ++sx) {
 
+#ifdef DEBUG_SPECTROGRAM_REPAINT
+//            std::cerr << "sx = " << sx << std::endl;
+#endif
+
             if (sx < 0 || sx >= int(sourceModel->getWidth())) continue;
 
             if (!m_synchronous) {