Improved display of the parameter on the slider, as well as using the plugin's range.
class ProcessorParameterPropertyComp : public PropertyComponent,
private AudioProcessorListener,
private Timer
{
public:
ProcessorParameterPropertyComp (const String& name, AudioProcessor& p, const int index_)
: PropertyComponent (name),
owner (p),
index (index_),
paramHasChanged (false),
slider (p, index_)
{
startTimer (100);
addAndMakeVisible (slider);
owner.addListener (this);
}
~ProcessorParameterPropertyComp()
{
owner.removeListener (this);
}
void refresh() override
{
paramHasChanged = false;
slider.setValue (owner.getParameter (index), dontSendNotification);
slider.updateText();
}
void audioProcessorChanged (AudioProcessor*) override {}
void audioProcessorParameterChanged (AudioProcessor*, int parameterIndex, float) override
{
if (parameterIndex == index)
paramHasChanged = true;
}
void timerCallback() override
{
if (paramHasChanged)
{
refresh();
startTimer (20);
}
else
{
startTimer (jmin (250, getTimerInterval() + 10));
}
}
private:
//==============================================================================
class ParamSlider : public Slider
{
public:
ParamSlider (AudioProcessor& p, const int index_)
: owner (p),
index (index_)
{
const int steps = owner.getParameterNumSteps (index);
if (steps <= 0 || steps == 0x7fffffff)
setRange (0.0, 1.0);
else
setRange (0.0, 1.0, (100.0 / (double) steps) * 0.01);
setSliderStyle (Slider::LinearBar);
setTextBoxIsEditable (false);
setScrollWheelEnabled (true);
}
void valueChanged() override
{
const float newVal = (float) getValue();
if (owner.getParameter (index) != newVal)
{
owner.setParameterNotifyingHost (index, newVal);
updateText();
}
}
String getTextFromValue (double /*value*/) override
{
return owner.getParameterText (index) + " " + owner.getParameterLabel (index);
}
private:
//==============================================================================
AudioProcessor& owner;
const int index;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ParamSlider)
};
AudioProcessor& owner;
const int index;
bool volatile paramHasChanged;
ParamSlider slider;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ProcessorParameterPropertyComp)
};