Demodulator finder, hover states for waterfall

src/visual/WaterfallCanvas.cpp

@@ -29,7 +29,7 @@ wxEND_EVENT_TABLE()
 
 WaterfallCanvas::WaterfallCanvas(wxWindow *parent, int *attribList) :
         wxGLCanvas(parent, wxID_ANY, attribList, wxDefaultPosition, wxDefaultSize,
-        wxFULL_REPAINT_ON_RESIZE), parent(parent), frameTimer(0), bwChange(false), demodBW(0) {
+        wxFULL_REPAINT_ON_RESIZE), parent(parent), frameTimer(0), bwChange(false), demodBW(0), hoveredDemod(-1) {
 
     int in_block_size = BUF_SIZE / 2;
     int out_block_size = FFT_SIZE;
@@ -54,6 +54,14 @@ WaterfallCanvas::~WaterfallCanvas() {
 
 }
 
+int WaterfallCanvas::GetFrequencyAt(float x) {
+
+    int center_freq = wxGetApp().getFrequency();
+    int freq = center_freq - (int) (0.5 * (float) SRATE) + (int) ((float) x * (float) SRATE);
+
+    return freq;
+}
+
 void WaterfallCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
     wxPaintDC dc(this);
     const wxSize ClientSize = GetClientSize();
@@ -64,15 +72,25 @@ void WaterfallCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
     glContext->BeginDraw();
     glContext->Draw(spectrum_points);
 
-    std::vector<DemodulatorInstance *> *demods = &wxGetApp().getDemodMgr().getDemodulators();
-
-    for (int i = 0, iMax = demods->size(); i < iMax; i++) {
-        glContext->DrawDemod((*demods)[i]);
-    }
+    std::vector<DemodulatorInstance *> &demods = wxGetApp().getDemodMgr().getDemodulators();
 
     if (mTracker.mouseInView()) {
-        glContext->DrawFreqSelector(mTracker.getMouseX(),0,1,0);
+
+        if (hoveredDemod == -1) {
+            glContext->DrawFreqSelector(mTracker.getMouseX(), 0, 1, 0);
+        } else {
+            glContext->DrawDemod(demods[hoveredDemod],1,1,0);
+        }
     }
+
+
+    for (int i = 0, iMax = demods.size(); i < iMax; i++) {
+        if (hoveredDemod == i) {
+            continue;
+        }
+        glContext->DrawDemod(demods[i]);
+    }
+
     glContext->EndDraw();
 
     SwapBuffers();
@@ -225,6 +243,33 @@ void WaterfallCanvas::mouseMoved(wxMouseEvent& event) {
 //                    wxString::Format(wxT("Set center frequency: %s"),
 //                            wxNumberFormatter::ToString((long) freq, wxNumberFormatter::Style_WithThousandsSep)));
 //        }
+    } else {
+
+        int hovered = -1;
+        int nearest = -1;
+        int near_dist = SRATE;
+
+        int freqPos = GetFrequencyAt(mTracker.getMouseX());
+
+        std::vector<DemodulatorInstance *> *demodsHover = wxGetApp().getDemodMgr().getDemodulatorsAt(freqPos, 15000);
+
+        if (demodsHover->size()) {
+            for (int i = 0, iMax = demodsHover->size(); i < iMax; i++) {
+                DemodulatorInstance *hoverDemod = (*demodsHover)[i];
+
+                int dist = abs(hoverDemod->getParams().frequency-freqPos);
+
+                if (dist < near_dist) {
+                    nearest = i;
+                }
+            }
+
+            hovered = nearest;
+        }
+
+        hoveredDemod = hovered;
+
+        delete demodsHover;
     }
 }
 
@@ -269,6 +314,7 @@ void WaterfallCanvas::mouseReleased(wxMouseEvent& event) {
 void WaterfallCanvas::mouseLeftWindow(wxMouseEvent& event) {
     mTracker.OnMouseLeftWindow(event);
     SetCursor(wxCURSOR_CROSS);
+    hoveredDemod = -1;
 }
 
 void WaterfallCanvas::mouseEnterWindow(wxMouseEvent& event) {

src/visual/WaterfallCanvas.h

@@ -18,6 +18,8 @@ public:
     ~WaterfallCanvas();
 
     void setData(std::vector<signed char> *data);
+    int GetFrequencyAt(float x);
+
 private:
     void OnPaint(wxPaintEvent& event);
     void OnKeyDown(wxKeyEvent& event);
@@ -50,6 +52,7 @@ private:
     MouseTracker mTracker;
     bool bwChange;
     int demodBW;
+    int hoveredDemod;
 
 // event table
 wxDECLARE_EVENT_TABLE();

src/visual/WaterfallContext.cpp

@@ -82,7 +82,7 @@ void WaterfallContext::Draw(std::vector<float> &points) {
 
 }
 
-void WaterfallContext::DrawDemod(DemodulatorInstance *demod) {
+void WaterfallContext::DrawDemod(DemodulatorInstance *demod, float r, float g, float b) {
     if (!demod) {
         return;
     }
@@ -94,7 +94,7 @@ void WaterfallContext::DrawDemod(DemodulatorInstance *demod) {
 
     glEnable(GL_BLEND);
     glBlendFunc(GL_SRC_ALPHA, GL_DST_COLOR);
-    glColor4f(1.0, 1.0, 1.0, 0.6);
+    glColor4f(r, g, b, 0.6);
 
     glBegin(GL_LINES);
     glVertex3f((uxPos - 0.5) * 2.0, 1.0, 0.0);
@@ -111,7 +111,7 @@ void WaterfallContext::DrawDemod(DemodulatorInstance *demod) {
     glEnd();
 
     glBlendFunc(GL_SRC_ALPHA, GL_DST_COLOR);
-    glColor4f(1.0, 1.0, 1.0, 0.2);
+    glColor4f(r, g, b, 0.2);
     glBegin(GL_QUADS);
     glVertex3f((uxPos - 0.5) * 2.0 - ofs, 1.0, 0.0);
     glVertex3f((uxPos - 0.5) * 2.0 - ofs, -1.0, 0.0);
@@ -125,7 +125,7 @@ void WaterfallContext::DrawDemod(DemodulatorInstance *demod) {
 
 }
 
-void WaterfallContext::DrawFreqSelector(float uxPos, float r = 1, float g = 1, float b = 1) {
+void WaterfallContext::DrawFreqSelector(float uxPos, float r, float g, float b) {
     DemodulatorInstance *demod = wxGetApp().getDemodTest();
 
     if (!demod) {

src/visual/WaterfallContext.h

@@ -14,8 +14,8 @@ public:
 
     void BeginDraw();
     void Draw(std::vector<float> &points);
-    void DrawFreqSelector(float uxPos, float r, float g, float b);
-    void DrawDemod(DemodulatorInstance *demod);
+    void DrawFreqSelector(float uxPos, float r = 1, float g = 1, float b = 1);
+    void DrawDemod(DemodulatorInstance *demod, float r = 1, float g = 1, float b = 1);
     void EndDraw();
 
 private: