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Make the zoom slider increase exponentially

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ericek111 2021-08-30 02:27:48 +02:00
parent f572d12936
commit 04ce4c3583
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GPG Key ID: F850D0320BA802C9
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
}