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/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2015 - ROLI Ltd.
Permission is granted to use this software under the terms of either:
a) the GPL v2 (or any later version)
b) the Affero GPL v3
Details of these licenses can be found at: www.gnu.org/licenses
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.juce.com for more information.
==============================================================================
*/
class GenericEditor : public AudioProcessorEditor,
public SliderListener,
private Timer
{
public:
enum
{
kParamSliderHeight = 40,
kParamLabelWidth = 80,
kParamSliderWidth = 300
};
GenericEditor (AudioProcessor& parent)
: AudioProcessorEditor (parent),
noParameterLabel ("noparam", "No parameters available")
{
const OwnedArray<AudioProcessorParameter>& params = parent.getParameters();
for (int i = 0; i < params.size(); ++i)
{
if (const AudioParameterFloat* param = dynamic_cast<AudioParameterFloat*>(params[i]))
{
Slider* aSlider;
paramSliders.add (aSlider = new Slider (param->name));
aSlider->setRange (param->range.start, param->range.end);
aSlider->setSliderStyle (Slider::LinearHorizontal);
aSlider->setValue (dynamic_cast<const AudioProcessorParameter*>(param)->getValue());
aSlider->addListener (this);
addAndMakeVisible (aSlider);
Label* aLabel;
paramLabels.add (aLabel = new Label (param->name, param->name));
addAndMakeVisible (aLabel);
}
}
noParameterLabel.setJustificationType (Justification::horizontallyCentred | Justification::verticallyCentred);
noParameterLabel.setFont (noParameterLabel.getFont().withStyle (Font::italic));
setSize (kParamSliderWidth + kParamLabelWidth,
jmax (1, kParamSliderHeight * paramSliders.size()));
if (paramSliders.size() == 0)
addAndMakeVisible (noParameterLabel);
else
startTimer (100);
}
~GenericEditor()
{
}
void resized() override
{
Rectangle<int> r = getLocalBounds();
noParameterLabel.setBounds (r);
for (int i = 0; i < paramSliders.size(); ++i)
{
Rectangle<int> paramBounds = r.removeFromTop (kParamSliderHeight);
Rectangle<int> labelBounds = paramBounds.removeFromLeft (kParamLabelWidth);
paramLabels[i]->setBounds (labelBounds);
paramSliders[i]->setBounds (paramBounds);
}
}
void paint (Graphics& g) override
{
g.fillAll (Colours::white);
}
//==============================================================================
void sliderValueChanged (Slider* slider) override
{
if (AudioProcessorParameter* param = getParameterForSlider (slider))
{
if (slider->isMouseButtonDown())
param->setValueNotifyingHost ((float) slider->getValue());
else
param->setValue ((float) slider->getValue());
}
}
void sliderDragStarted (Slider* slider) override
{
if (AudioProcessorParameter* param = getParameterForSlider (slider))
param->beginChangeGesture();
}
void sliderDragEnded (Slider* slider) override
{
if (AudioProcessorParameter* param = getParameterForSlider (slider))
param->endChangeGesture();
}
private:
void timerCallback() override
{
const OwnedArray<AudioProcessorParameter>& params = getAudioProcessor()->getParameters();
for (int i = 0; i < params.size(); ++i)
{
if (const AudioProcessorParameter* param = params[i])
{
if (i < paramSliders.size())
paramSliders[i]->setValue (param->getValue());
}
}
}
AudioProcessorParameter* getParameterForSlider (Slider* slider)
{
const OwnedArray<AudioProcessorParameter>& params = getAudioProcessor()->getParameters();
return params[paramSliders.indexOf (slider)];
}
Label noParameterLabel;
OwnedArray<Slider> paramSliders;
OwnedArray<Label> paramLabels;
};
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