initialize drawing with current settings

src/ui/SpecletAnalyzerComponent.cpp

@@ -134,6 +134,9 @@ SpecletAnalyzerComponent::SpecletAnalyzerComponent(SpecletParameters &parameters
 
     //[Constructor] You can add your own custom stuff here..
 
+    transformationChanged(parameters.getTransformation());
+    routingChanged(parameters.getRouting());
+
     //registers itself as listener for parameter-changes
     parameters.addListener(this);
     DBG("SpecletAnalyzerComponent as parameter listener added");

src/ui/SpecletAnalyzerComponent.h

@@ -23,6 +23,7 @@
 //[Headers]     -- You can add your own extra header files here --
 #include "../dsp/transformations/Transformation.h"
 #include "../plugin/SpecletParameters.h"
+#include "ColourGradients.h"
 #include "SpecletDrawer.h"
 #include "juce_core/juce_core.h"
 
@@ -90,7 +91,7 @@ private :
     template<class _Tp>
     auto enumOptionIntValue(const _Tp &enumType) const -> int;
 
-    SpecletDrawer *specletDrawer = new SpecletDrawer();
+    SpecletDrawer *specletDrawer = new SpecletDrawer(parameters.getLogFrequency(), parameters.getLogMagnitude(), ColourGradients::forIndex(parameters.getColorMode()));
     //[/UserVariables]
 
     //==============================================================================

src/ui/SpecletDrawer.cpp

@@ -38,7 +38,9 @@ const juce::Colour SpecletDrawer::AXIS_COLOR(0xffffffc0);
 //[/MiscUserDefs]
 
 //==============================================================================
-SpecletDrawer::SpecletDrawer() {
+SpecletDrawer::SpecletDrawer(bool logFrequency, bool logMagnitude, const juce::ColourGradient &initialColourGradient)
+    : settings({logFrequency, logMagnitude}),
+      renderingHelper(initialColourGradient) {
 
     //[UserPreSize]
     //[/UserPreSize]
@@ -51,6 +53,7 @@ SpecletDrawer::SpecletDrawer() {
     TransformationFactory::getSingletonInstance().registerForTransformationResults(this);
 
     startTimer(TIMER);
+    updateFrequencyAxisImage();
     ready = true;
     waitForDestruction.signal();
     //[/Constructor]
@@ -159,6 +162,7 @@ void SpecletDrawer::parameterChanged(const juce::String& parameterID, float newV
     if (parameterID.equalsIgnoreCase(SpecletParameters::PARAMETER_LOGMAGNITUDE)) {
         settings.logMagnitude = (newIndex == static_cast<std::underlying_type_t<SpecletDrawerParameters::Axis>>(SpecletDrawerParameters::Axis::LOGARITHMIC));
     }
+    //TODO (JohT) Add listener to RenderingHelper and move these lines there
     if (parameterID.equalsIgnoreCase(SpecletParameters::PARAMETER_COLORMODE)) {
         renderingHelper.setColourGradient(ColourGradients::forIndex(newIndex));
     }
@@ -216,14 +220,14 @@ void SpecletDrawer::updateFrequencyAxisImage() {
         double maxFrequencyLog = log10(maxSpectralFrequency);
         double minFrequencyLog = 1.0;
 
-        for (double logFreqDecade = 1; logFreqDecade <= 4; logFreqDecade++) {
+        for (auto logFreqDecade = 1; logFreqDecade <= 4; logFreqDecade++) {
             for (auto i = 0; i < (numberOfSubDivisions - 1); i++) {
                 double logFreq = logSubDivisionsPerDecade[i] + logFreqDecade;
                 if (logFreq > maxFrequencyLog) {
                     break;
                 }
                 double posPercent = (logFreq - minFrequencyLog) / (maxFrequencyLog - minFrequencyLog);
-                int yPos = static_cast<int>(lrint((sizeY - 1) * (1.0f - posPercent)));
+                auto yPos = static_cast<int>(lrint((sizeY - 1) * (1.0f - posPercent)));
                 double freqDouble = pow(10, logFreq);
                 double freqCeil = ceil(freqDouble);
                 double freqFloor = floor(freqDouble);

src/ui/SpecletDrawer.h

@@ -23,6 +23,7 @@
 //[Headers]     -- You can add your own extra header files here --
 #include "../dsp/transformations/Transformation.h"
 #include "../utilities/RenderingHelper.h"
+#include "ColourGradients.h"
 #include "juce_core/juce_core.h"
 
 //[/Headers]
@@ -37,12 +38,12 @@
 																						  //[/Comments]
 */
 class SpecletDrawer : public juce::Component,
-                       public TransformationListener,
-                       public juce::Timer,
-                       public juce::AudioProcessorValueTreeState::Listener {
+                      public TransformationListener,
+                      public juce::Timer,
+                      public juce::AudioProcessorValueTreeState::Listener {
 public:
     //==============================================================================
-    SpecletDrawer();
+    SpecletDrawer(bool logFrequency = true, bool logMagnitude = true, const juce::ColourGradient & initialColourGradient = ColourGradients::BLUE);
     ~SpecletDrawer() override;
 
     //==============================================================================
@@ -56,7 +57,6 @@ class SpecletDrawer : public juce::Component,
     void paint(juce::Graphics &g) override;
     void resized() override;
 
-
     //==============================================================================
     juce_UseDebuggingNewOperator
 
@@ -78,8 +78,8 @@ private :
     int sizeY = Constants::SIZE_Y;
     double currentTimeResolution = 0;
     double currentSamplingFrequency = 0.0;
-    RenderingHelper::TAnalyzerSettings settings = {};
-    RenderingHelper renderingHelper = {};
+    RenderingHelper::TAnalyzerSettings settings;
+    RenderingHelper renderingHelper;
     int currentCursorXPos = 0;
     juce::Image spectrumImage = {juce::Image::RGB, sizeX, sizeY, true};
     juce::Image axisImage = {juce::Image::PixelFormat::ARGB, sizeX, sizeY, true};

src/utilities/RenderingHelper.cpp

@@ -3,8 +3,8 @@
 #include "PerformanceLogger.h"
 #include <assert.h>
 
-RenderingHelper::RenderingHelper()
-    : colourGradient(ColourGradients::BLUE) {
+RenderingHelper::RenderingHelper(const juce::ColourGradient &initialColourGradient)
+    : colourGradient(initialColourGradient) {
 }
 
 //method for rendering one column of spectral data

src/utilities/RenderingHelper.h

@@ -27,7 +27,7 @@ class RenderingHelper {
         bool logMagnitude;//false=lin, true=log
     };
 
-    RenderingHelper();
+    explicit RenderingHelper(const juce::ColourGradient &initialColourGradient);
     ~RenderingHelper() = default;
 
     void setColourGradient(const juce::ColourGradient& value) { colourGradient = value; }

test/RenderingHelperTest.cpp

@@ -1,10 +1,11 @@
 #include "../src/utilities/RenderingHelper.h"
+#include "../src/ui/ColourGradients.h"
 
 #include <catch2/catch_test_macros.hpp>
 
 SCENARIO("Rendering Helper") {
     GIVEN("pixel to index") {
-        RenderingHelper renderingHelper;
+        RenderingHelper renderingHelper(ColourGradients::BLUE);
         SpectralDataInfo info(44100, 4096, 4096);
         const auto windowHeight = 100;
         const bool linearFrequency = false;
@@ -57,7 +58,7 @@ SCENARIO("Rendering Helper") {
 // They are not part of the automated tests.
 SCENARIO("Rendering Helper Debugging", "[.debug]") {
     GIVEN("pixel to index") {
-        RenderingHelper renderingHelper;
+        RenderingHelper renderingHelper(ColourGradients::BLUE);
         SpectralDataInfo info(44100, 4096, 4096);
         const auto windowHeight = 100;