Add zoom timeline playback marker

Author: medengineer

Source/Processors/FileReader/FileReaderEditor.cpp

@@ -181,10 +181,17 @@ ZoomTimeline::ZoomTimeline(FileReader* fr)
     fileReader = fr; 
     sliderWidth = 8;
     widthInSeconds = 30;
+
+    startTimer(200);
 }
 
 ZoomTimeline::~ZoomTimeline() {}
 
+void ZoomTimeline::timerCallback()
+{
+    repaint();
+}
+
 void ZoomTimeline::updatePlaybackRegion(int min, int max) 
 {
     /* Default zoom slider region to first 10s */
@@ -284,6 +291,14 @@ void ZoomTimeline::paint(Graphics& g)
         this->getHeight() + tickHeight,
         juce::Justification::centred);
 
+    /* Draw the current playback position */
+    float timelinePos = (float)(fileReader->getCurrentSample() - startTimestamp) / (stopTimestamp - startTimestamp) * getWidth();
+
+    if (timelinePos < getWidth())
+    {
+        g.setOpacity(1.0f);
+        g.fillRoundedRectangle(timelinePos, 0, 1, this->getHeight(), 0.2);
+    }
 
 }
 

Source/Processors/FileReader/FileReaderEditor.h

@@ -88,7 +88,7 @@ class FullTimeline : public Component, public Timer
 
 };
 
-class ZoomTimeline : public Component
+class ZoomTimeline : public Component, public Timer
 {
 public:
     ZoomTimeline(FileReader*);
@@ -117,6 +117,8 @@ class ZoomTimeline : public Component
     bool rightSliderIsSelected;
     bool playbackRegionIsSelected;
 
+    void timerCallback();
+
 };
 
 class ScrubDrawerButton : public DrawerButton