Re-usable SpectrumPanel to replace SpectrumContext

CMakeLists.txt

@@ -259,7 +259,6 @@ SET (cubicsdr_sources
 	src/visual/ScopeCanvas.cpp
 	src/visual/ScopeContext.cpp
 	src/visual/SpectrumCanvas.cpp
-	src/visual/SpectrumContext.cpp
 	src/visual/WaterfallCanvas.cpp
 	src/process/VisualProcessor.cpp
 	src/process/ScopeVisualProcessor.cpp
@@ -313,7 +312,6 @@ SET (cubicsdr_headers
 	src/visual/ScopeCanvas.h
 	src/visual/ScopeContext.h
 	src/visual/SpectrumCanvas.h
-	src/visual/SpectrumContext.h
 	src/visual/WaterfallCanvas.h
 	src/process/VisualProcessor.h
 	src/process/ScopeVisualProcessor.h

src/panel/ScopePanel.h

@@ -11,8 +11,11 @@ public:
     
     void setMode(ScopeMode scopeMode);
     void setPoints(std::vector<float> &points);
-    void drawPanelContents();
     
+protected:
+    void drawPanelContents();
+
+private:
     std::vector<float> points;
     ScopeMode scopeMode;
     GLPanel bgPanel;

src/panel/SpectrumPanel.cpp

@@ -1,2 +1,160 @@
 #include "SpectrumPanel.h"
 
+#include <sstream>
+#include <iostream>
+#include "ColorTheme.h"
+
+SpectrumPanel::SpectrumPanel() : floorValue(0), ceilValue(1) {
+    setFill(GLPANEL_FILL_GRAD_Y);
+    setFillColor(ThemeMgr::mgr.currentTheme->fftBackground * 2.0, ThemeMgr::mgr.currentTheme->fftBackground);
+}
+
+
+float SpectrumPanel::getFloorValue() const {
+    return floorValue;
+}
+
+void SpectrumPanel::setFloorValue(float floorValue) {
+    this->floorValue = floorValue;
+}
+
+float SpectrumPanel::getCeilValue() const {
+    return ceilValue;
+}
+
+void SpectrumPanel::setCeilValue(float ceilValue) {
+    this->ceilValue = ceilValue;
+}
+
+void SpectrumPanel::setFreq(long long freq) {
+    this->freq = freq;
+}
+
+long long SpectrumPanel::getFreq() {
+    return freq;
+}
+
+void SpectrumPanel::setBandwidth(long long bandwidth) {
+    this->bandwidth = bandwidth;
+}
+
+long long SpectrumPanel::getBandwidth() {
+    return bandwidth;
+}
+
+void SpectrumPanel::setPoints(std::vector<float> &points) {
+    this->points.assign(points.begin(), points.end());
+}
+
+
+void SpectrumPanel::drawPanelContents() {
+    glDisable(GL_TEXTURE_2D);
+    
+    glEnable(GL_BLEND);
+    glEnable(GL_LINE_SMOOTH);
+    glHint( GL_LINE_SMOOTH_HINT, GL_NICEST );
+
+    glLoadMatrixf(transform * (CubicVR::mat4::translate(-1.0f, -0.75f, 0.0f) * CubicVR::mat4::scale(2.0f, 1.5f, 1.0f)));
+
+    if (points.size()) {
+        glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+        float range = ceilValue-floorValue;
+        float ranges[3][4] = { { 90.0, 5000.0, 10.0, 100.0 }, { 20.0, 150.0, 10.0, 10.0 }, { -20.0, 30.0, 10.0, 1.0 } };
+        
+        for (int i = 0; i < 3; i++) {
+            float p = 0;
+            float rangeMin = ranges[i][0];
+            float rangeMax = ranges[i][1];
+            float rangeTrans = ranges[i][2];
+            float rangeStep = ranges[i][3];
+            
+            if (range >= rangeMin && range <= rangeMax) {
+                float a = 1.0;
+                
+                if (range <= rangeMin+rangeTrans) {
+                    a *= (range-rangeMin)/rangeTrans;
+                }
+                if (range >= rangeMax-rangeTrans) {
+                    a *= (rangeTrans-(range-(rangeMax-rangeTrans)))/rangeTrans;
+                }
+                
+                glColor4f(0.12, 0.12, 0.12, a);
+                glBegin(GL_LINES);
+                for (float l = floorValue; l<=ceilValue+rangeStep; l+=rangeStep) {
+                    p += rangeStep/range;
+                    glVertex2f(0,p);  glVertex2f(1,p);
+                }
+                glEnd();
+            }
+        }
+        
+        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+        glColor3f(ThemeMgr::mgr.currentTheme->fftLine.r, ThemeMgr::mgr.currentTheme->fftLine.g, ThemeMgr::mgr.currentTheme->fftLine.b);
+        glEnableClientState(GL_VERTEX_ARRAY);
+        glVertexPointer(2, GL_FLOAT, 0, &points[0]);
+        glDrawArrays(GL_LINE_STRIP, 0, points.size() / 2);
+        glDisableClientState(GL_VERTEX_ARRAY);
+    }
+    
+    glLoadMatrixf(transform);
+
+    GLint vp[4];
+    glGetIntegerv( GL_VIEWPORT, vp);
+    
+    float viewHeight = (float) vp[3];
+    float viewWidth = (float) vp[2];
+    
+    long long leftFreq = (float) freq - ((float) bandwidth / 2.0);
+    long long rightFreq = leftFreq + (float) bandwidth;
+    
+    long long firstMhz = (leftFreq / 1000000) * 1000000;
+    long double mhzStart = ((long double) (firstMhz - leftFreq) / (long double) (rightFreq - leftFreq)) * 2.0;
+    
+    long double mhzStep = (100000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
+    float mhzVisualStep = 0.1f;
+    
+    if (mhzStep * 0.5 * viewWidth > 400) {
+        mhzStep = (10000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
+        mhzVisualStep = 0.01f;
+    }
+    
+    long double currentMhz = trunc(floor(firstMhz / 1000000.0));
+    
+    std::stringstream label;
+    label.precision(2);
+    
+    float hPos = 1.0 - (16.0 / viewHeight);
+    float lMhzPos = 1.0 - (5.0 / viewHeight);
+    
+    for (float m = -1.0 + mhzStart, mMax = 1.0 + ((mhzStart>0)?mhzStart:-mhzStart); m <= mMax; m += mhzStep) {
+        label << std::fixed << currentMhz;
+        
+        double fractpart, intpart;
+        
+        fractpart = modf(currentMhz, &intpart);
+        
+        if (fractpart < 0.001) {
+            glLineWidth(4.0);
+            glColor3f(ThemeMgr::mgr.currentTheme->freqLine.r, ThemeMgr::mgr.currentTheme->freqLine.g, ThemeMgr::mgr.currentTheme->freqLine.b);
+        } else {
+            glLineWidth(1.0);
+            glColor3f(ThemeMgr::mgr.currentTheme->freqLine.r * 0.65, ThemeMgr::mgr.currentTheme->freqLine.g * 0.65,
+                      ThemeMgr::mgr.currentTheme->freqLine.b * 0.65);
+        }
+        
+        glDisable(GL_TEXTURE_2D);
+        glBegin(GL_LINES);
+        glVertex2f(m, lMhzPos);
+        glVertex2f(m, 1);
+        glEnd();
+        
+        glColor4f(ThemeMgr::mgr.currentTheme->text.r, ThemeMgr::mgr.currentTheme->text.g, ThemeMgr::mgr.currentTheme->text.b,1.0);
+        GLFont::getFont(GLFont::GLFONT_SIZE12).drawString(label.str(), m, hPos, 12, GLFont::GLFONT_ALIGN_CENTER, GLFont::GLFONT_ALIGN_CENTER);
+        
+        label.str(std::string());
+        
+        currentMhz += mhzVisualStep;
+    }
+    
+    glLineWidth(1.0);
+}

src/panel/SpectrumPanel.h

@@ -3,5 +3,29 @@
 #include "GLPanel.h"
 
 class SpectrumPanel : public GLPanel {
+public:
+    SpectrumPanel();
     
+    void setPoints(std::vector<float> &points);
+    
+    float getFloorValue() const;
+    void setFloorValue(float floorValue);
+
+    float getCeilValue() const;
+    void setCeilValue(float ceilValue);
+    
+    void setFreq(long long freq);
+    long long getFreq();
+    
+    void setBandwidth(long long bandwidth);
+    long long getBandwidth();
+    
+protected:
+    void drawPanelContents();
+
+private:
+    float floorValue, ceilValue;
+    long long freq;
+    long long bandwidth;
+    std::vector<float> points;
 };

src/panel/WaterfallPanel.h

@@ -9,11 +9,13 @@ public:
     void refreshTheme();
     void setPoints(std::vector<float> &points);
     void step();
-    void drawPanelContents();
     
     std::vector<float> points;
     bool needsUpdate;
 
+protected:
+    void drawPanelContents();
+    
 private:
     GLuint waterfall[2];
     int waterfall_ofs[2];

src/visual/ScopeCanvas.cpp

@@ -57,21 +57,14 @@ void ScopeCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
         ScopeRenderData *avData;
         inputData.pop(avData);
 
-        if (!avData) {
+        if (avData) {
-            return;
+            if (avData->waveform_points.size()) {
-        }
+                scopePanel.setPoints(avData->waveform_points);
-        
+                setStereo(avData->channels == 2);
-        int iMax = avData->waveform_points.size();
+            }
-        
+            
-        if (!iMax) {
             avData->decRefCount();
-            return;
         }
-  
-        scopePanel.setPoints(avData->waveform_points);
-        setStereo(avData->channels == 2);
-        
-        avData->decRefCount();
     }
 
     glContext->SetCurrent(*this);

src/visual/SpectrumCanvas.cpp

@@ -29,7 +29,7 @@ wxEND_EVENT_TABLE()
 SpectrumCanvas::SpectrumCanvas(wxWindow *parent, int *attribList) :
         InteractiveCanvas(parent, attribList), waterfallCanvas(NULL) {
 
-    glContext = new SpectrumContext(this, &wxGetApp().GetContext(this));
+    glContext = new PrimaryGLContext(this, &wxGetApp().GetContext(this));
 
     mouseTracker.setVertDragLock(true);
 
@@ -49,13 +49,12 @@ void SpectrumCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
         
         visualDataQueue.pop(vData);
         
-        if (!vData) {
+        if (vData) {
-            return;
+            spectrumPanel.setPoints(vData->spectrum_points);
+            spectrumPanel.setFloorValue(vData->fft_floor);
+            spectrumPanel.setCeilValue(vData->fft_ceiling);
+            vData->decRefCount();
         }
-        
-        spectrum_points.assign(vData->spectrum_points.begin(),vData->spectrum_points.end());
-        
-        vData->decRefCount();
     }
     
     
@@ -64,9 +63,14 @@ void SpectrumCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
 
     glViewport(0, 0, ClientSize.x, ClientSize.y);
 
-    glContext->BeginDraw(ThemeMgr::mgr.currentTheme->fftBackground.r, ThemeMgr::mgr.currentTheme->fftBackground.g, ThemeMgr::mgr.currentTheme->fftBackground.b);
+    glContext->BeginDraw(0,0,0);
-    glContext->Draw(spectrum_points, getCenterFrequency(), getBandwidth());
 
+    spectrumPanel.setFreq(getCenterFrequency());
+    spectrumPanel.setBandwidth(getBandwidth());
+    
+    spectrumPanel.calcTransform(CubicVR::mat4::identity());
+    spectrumPanel.draw();
+    
     std::vector<DemodulatorInstance *> &demods = wxGetApp().getDemodMgr().getDemodulators();
 
     for (int i = 0, iMax = demods.size(); i < iMax; i++) {
@@ -155,10 +159,6 @@ void SpectrumCanvas::attachWaterfallCanvas(WaterfallCanvas* canvas_in) {
     waterfallCanvas = canvas_in;
 }
 
-SpectrumContext* SpectrumCanvas::getSpectrumContext() {
-    return glContext;
-}
-
 SpectrumVisualDataQueue *SpectrumCanvas::getVisualDataQueue() {
     return &visualDataQueue;
 }

src/visual/SpectrumCanvas.h

@@ -1,31 +1,24 @@
 #pragma once
 
-#include "wx/glcanvas.h"
-#include "wx/timer.h"
-
 #include <vector>
 #include <queue>
 
 #include "InteractiveCanvas.h"
-#include "SpectrumContext.h"
+#include "PrimaryGLContext.h"
-
-#include "fftw3.h"
 #include "MouseTracker.h"
 #include "SpectrumVisualProcessor.h"
+#include "SpectrumPanel.h"
 
 class WaterfallCanvas;
 
 class SpectrumCanvas: public InteractiveCanvas {
 public:
-    std::vector<float> spectrum_points;
-
     SpectrumCanvas(wxWindow *parent, int *attribList = NULL);
     ~SpectrumCanvas();
 
     void attachWaterfallCanvas(WaterfallCanvas *canvas_in);
     void moveCenterFrequency(long long freqChange);
 
-    SpectrumContext* getSpectrumContext();
     SpectrumVisualDataQueue *getVisualDataQueue();
     
 private:
@@ -39,8 +32,9 @@ private:
     void OnMouseReleased(wxMouseEvent& event);
     void OnMouseLeftWindow(wxMouseEvent& event);
 
-    SpectrumContext *glContext;
+    PrimaryGLContext *glContext;
     WaterfallCanvas *waterfallCanvas;
+    SpectrumPanel spectrumPanel;
     
     SpectrumVisualDataQueue visualDataQueue;
 

src/visual/SpectrumContext.cpp

@@ -1,161 +0,0 @@
-#include "SpectrumContext.h"
-
-#include "SpectrumCanvas.h"
-#include "CubicSDR.h"
-#include <sstream>
-#include <iostream>
-#include "ColorTheme.h"
-
-SpectrumContext::SpectrumContext(SpectrumCanvas *canvas, wxGLContext *sharedContext) :
-        PrimaryGLContext(canvas, sharedContext), floorValue(0), ceilValue(1) {
-    glDisable(GL_CULL_FACE);
-    glDisable(GL_DEPTH_TEST);
-
-    glMatrixMode(GL_PROJECTION);
-    glLoadIdentity();
-
-}
-
-
-float SpectrumContext::getFloorValue() const {
-    return floorValue;
-}
-
-void SpectrumContext::setFloorValue(float floorValue) {
-    this->floorValue = floorValue;
-}
-
-float SpectrumContext::getCeilValue() const {
-    return ceilValue;
-}
-
-void SpectrumContext::setCeilValue(float ceilValue) {
-    this->ceilValue = ceilValue;
-}
-
-void SpectrumContext::Draw(std::vector<float> &points, long long freq, int bandwidth) {
-
-    glBegin(GL_QUADS);
-    glColor3f(ThemeMgr::mgr.currentTheme->fftBackground.r, ThemeMgr::mgr.currentTheme->fftBackground.g, ThemeMgr::mgr.currentTheme->fftBackground.b);
-    glVertex2f(1, 0.5);
-    glVertex2f(-1, 0.5);
-    glColor3f(ThemeMgr::mgr.currentTheme->fftBackground.r*2.0, ThemeMgr::mgr.currentTheme->fftBackground.g*2.0, ThemeMgr::mgr.currentTheme->fftBackground.b*2.0);
-    glVertex2f(-1, -1);
-    glVertex2f(1, -1);
-    glEnd();
-
-
-    glDisable(GL_TEXTURE_2D);
-
-    glEnable(GL_BLEND);
-    glEnable(GL_LINE_SMOOTH);
-    glHint( GL_LINE_SMOOTH_HINT, GL_NICEST );
-    if (points.size()) {
-        glPushMatrix();
-        glTranslatef(-1.0f, -0.75f, 0.0f);
-        glScalef(2.0f, 1.5f, 1.0f);
-
-
-        glBlendFunc(GL_SRC_ALPHA, GL_ONE);
-        float range = ceilValue-floorValue;
-        float ranges[3][4] = { { 90.0, 5000.0, 10.0, 100.0 }, { 20.0, 150.0, 10.0, 10.0 }, { -20.0, 30.0, 10.0, 1.0 } };
-
-        for (int i = 0; i < 3; i++) {
-            float p = 0;
-            float rangeMin = ranges[i][0];
-            float rangeMax = ranges[i][1];
-            float rangeTrans = ranges[i][2];
-            float rangeStep = ranges[i][3];
-
-            if (range >= rangeMin && range <= rangeMax) {
-                float a = 1.0;
-
-                if (range <= rangeMin+rangeTrans) {
-                    a *= (range-rangeMin)/rangeTrans;
-                }
-                if (range >= rangeMax-rangeTrans) {
-                    a *= (rangeTrans-(range-(rangeMax-rangeTrans)))/rangeTrans;
-                }
-
-                glColor4f(0.12, 0.12, 0.12, a);
-                glBegin(GL_LINES);
-                for (float l = floorValue; l<=ceilValue+rangeStep; l+=rangeStep) {
-                    p += rangeStep/range;
-                    glVertex2f(0,p);  glVertex2f(1,p);
-                }
-                glEnd();
-            }
-        }
-
-        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-        glColor3f(ThemeMgr::mgr.currentTheme->fftLine.r, ThemeMgr::mgr.currentTheme->fftLine.g, ThemeMgr::mgr.currentTheme->fftLine.b);
-        glEnableClientState(GL_VERTEX_ARRAY);
-        glVertexPointer(2, GL_FLOAT, 0, &points[0]);
-        glDrawArrays(GL_LINE_STRIP, 0, points.size() / 2);
-        glDisableClientState(GL_VERTEX_ARRAY);
-        glPopMatrix();
-    }
-
-    GLint vp[4];
-    glGetIntegerv( GL_VIEWPORT, vp);
-
-    float viewHeight = (float) vp[3];
-    float viewWidth = (float) vp[2];
-
-    long long leftFreq = (float) freq - ((float) bandwidth / 2.0);
-    long long rightFreq = leftFreq + (float) bandwidth;
-
-    long long firstMhz = (leftFreq / 1000000) * 1000000;
-    long double mhzStart = ((long double) (firstMhz - leftFreq) / (long double) (rightFreq - leftFreq)) * 2.0;
-
-    long double mhzStep = (100000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
-    float mhzVisualStep = 0.1f;
-
-    if (mhzStep * 0.5 * viewWidth > 400) {
-        mhzStep = (10000.0 / (long double) (rightFreq - leftFreq)) * 2.0;
-        mhzVisualStep = 0.01f;
-    }
-
-    long double currentMhz = trunc(floor(firstMhz / 1000000.0));
-
-    std::stringstream label;
-    label.precision(2);
-
-    float hPos = 1.0 - (16.0 / viewHeight);
-    float lMhzPos = 1.0 - (5.0 / viewHeight);
-
-    for (float m = -1.0 + mhzStart, mMax = 1.0 + fabs(mhzStart); m <= mMax; m += mhzStep) {
-        label << std::fixed << currentMhz;
-
-        double fractpart, intpart;
-
-        fractpart = modf(currentMhz, &intpart);
-
-        if (fractpart < 0.001) {
-            glLineWidth(4.0);
-            glColor3f(ThemeMgr::mgr.currentTheme->freqLine.r, ThemeMgr::mgr.currentTheme->freqLine.g, ThemeMgr::mgr.currentTheme->freqLine.b);
-        } else {
-            glLineWidth(1.0);
-            glColor3f(ThemeMgr::mgr.currentTheme->freqLine.r * 0.65, ThemeMgr::mgr.currentTheme->freqLine.g * 0.65,
-                    ThemeMgr::mgr.currentTheme->freqLine.b * 0.65);
-        }
-
-        glDisable(GL_TEXTURE_2D);
-        glBegin(GL_LINES);
-        glVertex2f(m, lMhzPos);
-        glVertex2f(m, 1);
-        glEnd();
-
-        glColor4f(ThemeMgr::mgr.currentTheme->text.r, ThemeMgr::mgr.currentTheme->text.g, ThemeMgr::mgr.currentTheme->text.b,1.0);
-        GLFont::getFont(GLFont::GLFONT_SIZE12).drawString(label.str(), m, hPos, 12, GLFont::GLFONT_ALIGN_CENTER, GLFont::GLFONT_ALIGN_CENTER);
-
-        label.str(std::string());
-
-        currentMhz += mhzVisualStep;
-    }
-
-    glLineWidth(1.0);
-
-//    getFont(PrimaryGLContext::GLFONT_SIZE16).drawString("Welcome to CubicSDR -- This is a test string. 01234567890!@#$%^&*()_[]",0.0,0.0,16,GLFont::GLFONT_ALIGN_CENTER,GLFont::GLFONT_ALIGN_CENTER);
-    CheckGLError();
-}

src/visual/SpectrumContext.h

@@ -1,23 +0,0 @@
-#pragma once
-
-#include "PrimaryGLContext.h"
-#include "Gradient.h"
-
-#define NUM_WATERFALL_LINES 512
-
-class SpectrumCanvas;
-
-class SpectrumContext: public PrimaryGLContext {
-public:
-    SpectrumContext(SpectrumCanvas *canvas, wxGLContext *sharedContext);
-
-    void Draw(std::vector<float> &points, long long freq, int bandwidth);
-
-    float getFloorValue() const;
-    void setFloorValue(float floorValue);
-    float getCeilValue() const;
-    void setCeilValue(float ceilValue);
-
-private:
-    float floorValue, ceilValue;
-};

src/visual/WaterfallCanvas.cpp

@@ -139,7 +139,7 @@ void WaterfallCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
     glContext->SetCurrent(*this);
     initGLExtensions();
     glViewport(0, 0, ClientSize.x, ClientSize.y);
-
+    
     if (!visualDataQueue.empty()) {
         SpectrumVisualData *vData;
         
@@ -148,9 +148,8 @@ void WaterfallCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
         if (vData) {
             waterfallPanel.setPoints(vData->spectrum_points);
             waterfallPanel.step();
+            vData->decRefCount();
         }
-        
-        vData->decRefCount();
     }
 
     glContext->BeginDraw(0,0,0);