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JUCE/examples/PlugInSamples/Surround/Source/SurroundEditor.h

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C++

/*
==============================================================================
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 ChannelClickListener
{
public:
virtual ~ChannelClickListener() {}
virtual void channelButtonClicked (int channelIndex) = 0;
};
class SurroundEditor : public AudioProcessorEditor,
public ButtonListener,
private Timer
{
public:
SurroundEditor (AudioProcessor& parent)
: AudioProcessorEditor (parent),
currentChannelLayout (AudioChannelSet::disabled()),
noChannelsLabel ("noChannelsLabel", "Input disabled")
{
addAndMakeVisible (noChannelsLabel);
setSize (640, 64);
timerCallback();
startTimer (500);
}
~SurroundEditor()
{
}
void resized() override
{
Rectangle<int> r = getLocalBounds();
noChannelsLabel.setBounds (r);
if (channelButtons.size() > 0)
{
const int buttonWidth = r.getWidth() / channelButtons.size();
for (int i = 0; i < channelButtons.size(); ++i)
channelButtons[i]->setBounds (r.removeFromLeft (buttonWidth));
}
}
void paint (Graphics& g) override
{
g.fillAll (Colours::white);
}
void buttonClicked (Button* btn) override
{
if (TextButton* textButton = dynamic_cast<TextButton*> (btn))
{
const int channelIndex = channelButtons.indexOf (textButton);
if (ChannelClickListener* listener = dynamic_cast<ChannelClickListener*> (getAudioProcessor()))
listener->channelButtonClicked (channelIndex);
}
}
private:
void timerCallback() override
{
const AudioChannelSet& channelSet = getAudioProcessor()->busArrangement.outputBuses.getReference (0).channels;
if (channelSet != currentChannelLayout)
{
currentChannelLayout = channelSet;
channelButtons.clear();
if (currentChannelLayout == AudioChannelSet::disabled())
{
noChannelsLabel.setVisible (true);
}
else
{
const int numChannels = currentChannelLayout.size();
for (int i = 0; i < numChannels; ++i)
{
const String channelName =
AudioChannelSet::getAbbreviatedChannelTypeName (currentChannelLayout.getTypeOfChannel (i));
TextButton* newButton;
channelButtons.add (newButton = new TextButton (channelName, channelName));
newButton->addListener (this);
addAndMakeVisible (newButton);
}
noChannelsLabel.setVisible (false);
resized();
}
}
}
AudioChannelSet currentChannelLayout;
Label noChannelsLabel;
OwnedArray<TextButton> channelButtons;
};