Allow visualiser to be paused by clicking

Source/components/VisualiserComponent.cpp

@@ -32,10 +32,23 @@ void VisualiserComponent::paint(juce::Graphics& g) {
     auto r = getLocalBounds().toFloat();
     auto minDim = juce::jmin(r.getWidth(), r.getHeight());
 
-    juce::CriticalSection::ScopedLockType scope(lock);
-    if (buffer.size() > 0) {
-        g.setColour(waveformColour);
-        paintXY(g, r.withSizeKeepingCentre(minDim, minDim));
+    {
+        juce::CriticalSection::ScopedLockType scope(lock);
+        if (buffer.size() > 0) {
+            g.setColour(waveformColour);
+            paintXY(g, r.withSizeKeepingCentre(minDim, minDim));
+        }
+    }
+
+    if (!active) {
+        // add translucent layer
+        g.setColour(juce::Colours::black.withAlpha(0.5f));
+        g.fillRect(getLocalBounds());
+
+        // add text
+        g.setColour(juce::Colours::white);
+        g.setFont(14.0f);
+        g.drawFittedText("Paused", getLocalBounds(), juce::Justification::centred, 1);
     }
 }
 
@@ -51,6 +64,19 @@ void VisualiserComponent::run() {
     }
 }
 
+void VisualiserComponent::mouseDown(const juce::MouseEvent& event) {
+    active = !active;
+    if (active) {
+        startTimerHz(60);
+        startThread();
+    } else {
+        audioProcessor.consumerStop(consumer);
+        stopTimer();
+        stopThread(1000);
+    }
+    repaint();
+}
+
 void VisualiserComponent::paintChannel(juce::Graphics& g, juce::Rectangle<float> area, int channel) {
     juce::Path path;
 

Source/components/VisualiserComponent.h

@@ -4,7 +4,7 @@
 #include "../concurrency/BufferConsumer.h"
 #include "../PluginProcessor.h"
 
-class VisualiserComponent : public juce::Component, public juce::Timer, public juce::Thread {
+class VisualiserComponent : public juce::Component, public juce::Timer, public juce::Thread, public juce::MouseListener {
 public:
     VisualiserComponent(int numChannels, OscirenderAudioProcessor& p);
     ~VisualiserComponent() override;
@@ -16,6 +16,7 @@ public:
     void paint(juce::Graphics&) override;
 	void timerCallback() override;
 	void run() override;
+    void mouseDown(const juce::MouseEvent& event) override;
 
 private:
 	juce::CriticalSection lock;
@@ -25,6 +26,8 @@ private:
 	OscirenderAudioProcessor& audioProcessor;
     std::vector<float> tempBuffer = std::vector<float>(2 * 4096);
     int precision = 4;
+
+    std::atomic<bool> active = true;
     
     std::shared_ptr<BufferConsumer> consumer;