New stuff

src/frequency_select.h

@@ -0,0 +1,38 @@
+#pragma once
+#include <imgui.h>
+#include <imgui_internal.h>
+
+class FrequencySelect {
+public:
+    FrequencySelect();
+    void init();
+    void draw();
+    void setFrequency(long freq);
+
+    long frequency;
+    bool frequencyChanged = false;
+
+private:
+    void onPosChange();
+    void onResize();
+    void incrementDigit(int i);
+    void decrementDigit(int i);
+
+    ImVec2 widgetPos;
+    ImVec2 widgetEndPos;
+    ImVec2 widgetSize;
+
+    ImVec2 lastWidgetPos;
+    ImVec2 lastWidgetSize;
+
+    ImGuiWindow* window;
+    ImFont* font;
+
+    int digits[12];
+    ImVec2 digitBottomMins[12];
+    ImVec2 digitTopMins[12];
+    ImVec2 digitBottomMaxs[12];
+    ImVec2 digitTopMaxs[12];
+
+    char buf[100];
+};