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Merge pull request #330 from ericek111/exp_zoom

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Make the zoom slider exponential
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AlexandreRouma 2021-08-30 15:24:38 +02:00 committed by GitHub
commit c579aca1db
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1 changed files with 8 additions and 2 deletions
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10
core/src/gui/main_window.cpp
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@ -598,8 +598,14 @@ void MainWindow::draw() {
ImGui::SetCursorPosX((ImGui::GetWindowSize().x / 2.0) - (ImGui::CalcTextSize("Zoom").x / 2.0));
ImGui::Text("Zoom");
ImGui::SetCursorPosX((ImGui::GetWindowSize().x / 2.0) - 10);
if (ImGui::VSliderFloat("##_7_", ImVec2(20.0, 150.0), &bw, gui::waterfall.getBandwidth(), 1000.0, "")) {
gui::waterfall.setViewBandwidth(bw);
float minSliderBw = 1000.0;
float maxSliderBw = gui::waterfall.getBandwidth();
if (ImGui::VSliderFloat("##_7_", ImVec2(20.0, 150.0), &bw, maxSliderBw, minSliderBw, "")) {
float normBw = bw / (maxSliderBw - minSliderBw);
float factor = normBw * normBw;
float finalBw = minSliderBw + bw * factor;
gui::waterfall.setViewBandwidth(finalBw);
if (vfo != NULL) {
gui::waterfall.setViewOffset(vfo->centerOffset); // center vfo on screen
}