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zoom slider

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This commit is contained in:
Erik Bročko
2026-03-25 21:09:02 +01:00
parent 0b0f6da13a
commit 753670aa72
1 changed files with 17 additions and 4 deletions
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21
src/ui/Application.cpp
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@@ -648,13 +648,26 @@ void Application::renderControlPanel() {
specDisplay_.clearPeakHold();
}
if (viewLo_ > 0.0f || viewHi_ < 1.0f) {
float zoomPct = 1.0f / (viewHi_ - viewLo_);
ImGui::Text("Zoom: %.1fx", zoomPct);
{
float span = viewHi_ - viewLo_;
float zoomX = 1.0f / span;
float resetBtnW = ImGui::CalcTextSize("Reset").x + ImGui::GetStyle().FramePadding.x * 2;
float zoomLabelW = ImGui::CalcTextSize("Zoom:").x + ImGui::GetStyle().ItemSpacing.x;
float sliderW = ImGui::GetContentRegionAvail().x - zoomLabelW - resetBtnW - ImGui::GetStyle().ItemSpacing.x;
ImGui::AlignTextToFramePadding();
ImGui::Text("Zoom:");
ImGui::SameLine();
ImGui::SetNextItemWidth(sliderW);
if (ImGui::SliderFloat("##zoom", &zoomX, 1.0f, 200.0f, "%.1fx", ImGuiSliderFlags_Logarithmic)) {
zoomX = std::clamp(zoomX, 1.0f, 1000.0f);
float newSpan = 1.0f / zoomX;
viewLo_ = 0.0f;
viewHi_ = std::clamp(newSpan, 0.0f, 1.0f);
}
ImGui::SameLine();
if (ImGui::SmallButton("Reset##zoom")) {
viewLo_ = 0.0f;
viewHi_ = 1.0f;
viewHi_ = 0.5f;
}
}
}