split off more stuff

src/ui/DisplayPanel.h

@@ -0,0 +1,72 @@
+#pragma once
+
+#include "core/Types.h"
+#include "ui/UIState.h"
+#include "ui/WaterfallDisplay.h"
+#include "ui/SpectrumDisplay.h"
+#include "ui/Cursors.h"
+#include "ui/Measurements.h"
+#include "ui/ColorMap.h"
+
+#include <SDL.h>
+#include <vector>
+
+namespace baudmine {
+
+class AudioEngine;
+
+class DisplayPanel {
+public:
+    void renderSpectrum(AudioEngine& audio, UIState& ui,
+                        SpectrumDisplay& specDisplay, Cursors& cursors,
+                        Measurements& measurements);
+
+    void renderWaterfall(AudioEngine& audio, UIState& ui,
+                         WaterfallDisplay& waterfall, SpectrumDisplay& specDisplay,
+                         Cursors& cursors, Measurements& measurements,
+                         ColorMap& colorMap);
+
+    void renderHoverOverlay(const AudioEngine& audio, const UIState& ui,
+                            const Cursors& cursors, const SpectrumDisplay& specDisplay);
+
+    void handleTouch(const SDL_Event& event, UIState& ui, SDL_Window* window);
+
+    // Panel geometry (read by Application for layout)
+    float specPosX = 0, specPosY = 0, specSizeX = 0, specSizeY = 0;
+    float wfPosX   = 0, wfPosY   = 0, wfSizeX   = 0, wfSizeY   = 0;
+
+    enum class HoverPanel { None, Spectrum, Waterfall };
+    HoverPanel hoverPanel      = HoverPanel::None;
+    float      hoverWfTimeOff  = 0.0f;
+
+    float spectrumFrac  = 0.35f;
+    bool  draggingSplit  = false;
+
+    // Returns true if split was just released (caller should save config).
+    bool splitReleased();
+
+private:
+    void handleSpectrumInput(AudioEngine& audio, UIState& ui,
+                             SpectrumDisplay& specDisplay, Cursors& cursors,
+                             float posX, float posY, float sizeX, float sizeY);
+
+    struct TouchState {
+        int   count = 0;
+        float startDist = 0.0f;
+        float startLo = 0.0f;
+        float startHi = 0.0f;
+        float startCenterX = 0.0f;
+        float lastCenterX = 0.0f;
+        float lastDist = 0.0f;
+    } touch_;
+
+    bool splitWasReleased_ = false;
+
+    // Scratch buffers
+    std::vector<std::vector<float>>   wfSpectraScratch_;
+    std::vector<WaterfallChannelInfo> wfChInfoScratch_;
+    std::vector<std::vector<float>>   allSpectraScratch_;
+    std::vector<ChannelStyle>         stylesScratch_;
+};
+
+} // namespace baudmine