- clean working copy for leaving SVN

juce/JUCE-3.1.1/examples/audio plugin demo/Source/PluginEditor.cpp

@@ -0,0 +1,177 @@
+/*
+  ==============================================================================
+
+    This file was auto-generated by the Jucer!
+
+    It contains the basic startup code for a Juce application.
+
+  ==============================================================================
+*/
+
+#include "PluginProcessor.h"
+#include "PluginEditor.h"
+
+//==============================================================================
+JuceDemoPluginAudioProcessorEditor::JuceDemoPluginAudioProcessorEditor (JuceDemoPluginAudioProcessor& owner)
+    : AudioProcessorEditor (owner),
+      midiKeyboard (owner.keyboardState, MidiKeyboardComponent::horizontalKeyboard),
+      infoLabel (String::empty),
+      gainLabel ("", "Throughput level:"),
+      delayLabel ("", "Delay:"),
+      gainSlider ("gain"),
+      delaySlider ("delay")
+{
+    // add some sliders..
+    addAndMakeVisible (gainSlider);
+    gainSlider.setSliderStyle (Slider::Rotary);
+    gainSlider.addListener (this);
+    gainSlider.setRange (0.0, 1.0, 0.01);
+
+    addAndMakeVisible (delaySlider);
+    delaySlider.setSliderStyle (Slider::Rotary);
+    delaySlider.addListener (this);
+    delaySlider.setRange (0.0, 1.0, 0.01);
+
+    // add some labels for the sliders..
+    gainLabel.attachToComponent (&gainSlider, false);
+    gainLabel.setFont (Font (11.0f));
+
+    delayLabel.attachToComponent (&delaySlider, false);
+    delayLabel.setFont (Font (11.0f));
+
+    // add the midi keyboard component..
+    addAndMakeVisible (midiKeyboard);
+
+    // add a label that will display the current timecode and status..
+    addAndMakeVisible (infoLabel);
+    infoLabel.setColour (Label::textColourId, Colours::blue);
+
+    // add the triangular resizer component for the bottom-right of the UI
+    addAndMakeVisible (resizer = new ResizableCornerComponent (this, &resizeLimits));
+    resizeLimits.setSizeLimits (150, 150, 800, 300);
+
+    // set our component's initial size to be the last one that was stored in the filter's settings
+    setSize (owner.lastUIWidth,
+             owner.lastUIHeight);
+
+    startTimer (50);
+}
+
+JuceDemoPluginAudioProcessorEditor::~JuceDemoPluginAudioProcessorEditor()
+{
+}
+
+//==============================================================================
+void JuceDemoPluginAudioProcessorEditor::paint (Graphics& g)
+{
+    g.setGradientFill (ColourGradient (Colours::white, 0, 0,
+                                       Colours::grey, 0, (float) getHeight(), false));
+    g.fillAll();
+}
+
+void JuceDemoPluginAudioProcessorEditor::resized()
+{
+    infoLabel.setBounds (10, 4, 400, 25);
+    gainSlider.setBounds (20, 60, 150, 40);
+    delaySlider.setBounds (200, 60, 150, 40);
+
+    const int keyboardHeight = 70;
+    midiKeyboard.setBounds (4, getHeight() - keyboardHeight - 4, getWidth() - 8, keyboardHeight);
+
+    resizer->setBounds (getWidth() - 16, getHeight() - 16, 16, 16);
+
+    getProcessor().lastUIWidth = getWidth();
+    getProcessor().lastUIHeight = getHeight();
+}
+
+//==============================================================================
+// This timer periodically checks whether any of the filter's parameters have changed...
+void JuceDemoPluginAudioProcessorEditor::timerCallback()
+{
+    JuceDemoPluginAudioProcessor& ourProcessor = getProcessor();
+
+    AudioPlayHead::CurrentPositionInfo newPos (ourProcessor.lastPosInfo);
+
+    if (lastDisplayedPosition != newPos)
+        displayPositionInfo (newPos);
+
+    gainSlider.setValue (ourProcessor.gain, dontSendNotification);
+    delaySlider.setValue (ourProcessor.delay, dontSendNotification);
+}
+
+// This is our Slider::Listener callback, when the user drags a slider.
+void JuceDemoPluginAudioProcessorEditor::sliderValueChanged (Slider* slider)
+{
+    if (slider == &gainSlider)
+    {
+        // It's vital to use setParameterNotifyingHost to change any parameters that are automatable
+        // by the host, rather than just modifying them directly, otherwise the host won't know
+        // that they've changed.
+        getProcessor().setParameterNotifyingHost (JuceDemoPluginAudioProcessor::gainParam,
+                                                  (float) gainSlider.getValue());
+    }
+    else if (slider == &delaySlider)
+    {
+        getProcessor().setParameterNotifyingHost (JuceDemoPluginAudioProcessor::delayParam,
+                                                  (float) delaySlider.getValue());
+    }
+}
+
+//==============================================================================
+// quick-and-dirty function to format a timecode string
+static String timeToTimecodeString (const double seconds)
+{
+    const double absSecs = std::abs (seconds);
+
+    const int hours =  (int) (absSecs / (60.0 * 60.0));
+    const int mins  = ((int) (absSecs / 60.0)) % 60;
+    const int secs  = ((int) absSecs) % 60;
+
+    String s (seconds < 0 ? "-" : "");
+
+    s << String (hours).paddedLeft ('0', 2) << ":"
+      << String (mins) .paddedLeft ('0', 2) << ":"
+      << String (secs) .paddedLeft ('0', 2) << ":"
+      << String (roundToInt (absSecs * 1000) % 1000).paddedLeft ('0', 3);
+
+    return s;
+}
+
+// quick-and-dirty function to format a bars/beats string
+static String ppqToBarsBeatsString (double ppq, double /*lastBarPPQ*/, int numerator, int denominator)
+{
+    if (numerator == 0 || denominator == 0)
+        return "1|1|0";
+
+    const int ppqPerBar = (numerator * 4 / denominator);
+    const double beats  = (fmod (ppq, ppqPerBar) / ppqPerBar) * numerator;
+
+    const int bar    = ((int) ppq) / ppqPerBar + 1;
+    const int beat   = ((int) beats) + 1;
+    const int ticks  = ((int) (fmod (beats, 1.0) * 960.0 + 0.5));
+
+    String s;
+    s << bar << '|' << beat << '|' << ticks;
+    return s;
+}
+
+// Updates the text in our position label.
+void JuceDemoPluginAudioProcessorEditor::displayPositionInfo (const AudioPlayHead::CurrentPositionInfo& pos)
+{
+    lastDisplayedPosition = pos;
+    String displayText;
+    displayText.preallocateBytes (128);
+
+    displayText << String (pos.bpm, 2) << " bpm, "
+                << pos.timeSigNumerator << '/' << pos.timeSigDenominator
+                << "  -  " << timeToTimecodeString (pos.timeInSeconds)
+                << "  -  " << ppqToBarsBeatsString (pos.ppqPosition, pos.ppqPositionOfLastBarStart,
+                                                    pos.timeSigNumerator, pos.timeSigDenominator);
+
+    if (pos.isRecording)
+        displayText << "  (recording)";
+    else if (pos.isPlaying)
+        displayText << "  (playing)";
+
+    infoLabel.setText ("[" + SystemStats::getJUCEVersion() + "]   " + displayText, dontSendNotification);
+}