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shift center freq on zoomed edge hit

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This commit is contained in:
Charles J. Cliffe 2015-01-02 02:44:50 -05:00
parent ce75eed995
commit 6a03aae303
1 changed files with 8 additions and 7 deletions
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15
src/visual/SpectrumCanvas.cpp
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@ -221,17 +221,18 @@ void SpectrumCanvas::mouseMoved(wxMouseEvent& event) {
int freq = wxGetApp().getFrequency();
if (isView) {
center_freq -= freqChange;
center_freq = center_freq - freqChange;
if (waterfallCanvas) {
waterfallCanvas->SetCenterFrequency(center_freq);
}
if (SRATE/2 < (abs(freq-center_freq)+bandwidth/2)) {
// if (center_freq < freq) {
// freqChange = -((center_freq - (freq - bandwidth / 2)) - (SRATE/2));
// } else {
// freqChange = ((freq + bandwidth / 2) - center_freq - (SRATE/2));
// }
int bw = (int)bandwidth;
int bwOfs = ((int)center_freq>freq)?((int)bandwidth/2):(-(int)bandwidth/2);
int freqEdge = ((int)center_freq+bwOfs);
if (abs(freq-freqEdge) > (SRATE/2)) {
freqChange = -(((int)center_freq>freq)?(freqEdge-freq-(SRATE/2)):(freqEdge-freq+(SRATE/2)));
std::cout << "change: " << freqChange;
} else {
freqChange = 0;
}