Update of /cvsroot/audacity/audacity-src/src
In directory 23jxhf1.ch3.sourceforge.com:/tmp/cvs-serv19603
Modified Files:
FreqWindow.cpp
Log Message:
Apply patch for a progress dialogue on the Plot Spectrum command by Sam Lewis,
with the addition of a divider to reduce the update frequency to minimise the
performance penalty for doing lots of progress bar updates.
Index: FreqWindow.cpp
===================================================================
RCS file: /cvsroot/audacity/audacity-src/src/FreqWindow.cpp,v
retrieving revision 1.80
retrieving revision 1.81
diff -u -d -r1.80 -r1.81
--- FreqWindow.cpp 20 Sep 2009 19:06:04 -0000 1.80
+++ FreqWindow.cpp 2 Nov 2009 20:52:47 -0000 1.81
@@ -994,6 +994,9 @@
else
wss = 1.0;
+ //add progress dialog
+ ProgressDialog *mProgress = new ProgressDialog(_("FreqWindow"),_("Drawing
Spectrum"));
+
int start = 0;
int windows = 0;
while (start + mWindowSize <= mDataLen) {
@@ -1080,6 +1083,12 @@
start += half;
windows++;
+ // only update the progress dialogue infrequently to reduce it's overhead
+ // If we do it every time, it spends as much time updating X11 as doing
+ // the calculations. 10 seems a reasonable compromise on Linux that
+ // doesn't make it unresponsive, but avoids the slowdown.
+ if ((windows % 10) == 0)
+ mProgress->Update(1 - static_cast<float>(mDataLen - start) /
mDataLen);
}
switch (alg) {
@@ -1195,6 +1204,7 @@
DrawPlot();
mFreqPlot->Refresh(true);
+ delete mProgress;
}
void FreqWindow::OnExport(wxCommandEvent & WXUNUSED(event))
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