mirror of
https://github.com/juce-framework/JUCE.git
synced 2026-01-11 23:54:18 +00:00
540 lines
18 KiB
C++
540 lines
18 KiB
C++
#ifndef MAINCOMPONENT_H_INCLUDED
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#define MAINCOMPONENT_H_INCLUDED
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#include "../JuceLibraryCode/JuceHeader.h"
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#include "LightpadComponent.h"
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//==============================================================================
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/**
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A struct that handles the setup and layout of the DrumPadGridProgram
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*/
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struct ColourGrid
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{
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ColourGrid (int cols, int rows)
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: numColumns (cols),
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numRows (rows)
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{
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constructGridFillArray();
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}
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/** Creates a GridFill object for each pad in the grid and sets its colour
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and fill before adding it to an array of GridFill objects
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*/
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void constructGridFillArray()
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{
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gridFillArray.clear();
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int counter = 0;
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for (int i = 0; i < numColumns; ++i)
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{
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for (int j = 0; j < numRows; ++j)
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{
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DrumPadGridProgram::GridFill fill;
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Colour colourToUse = colourArray.getUnchecked (counter);
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fill.colour = colourToUse.withBrightness (colourToUse == currentColour ? 1.0f : 0.1f);
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if (colourToUse == Colours::black)
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fill.fillType = DrumPadGridProgram::GridFill::FillType::hollow;
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else
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fill.fillType = DrumPadGridProgram::GridFill::FillType::filled;
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gridFillArray.add (fill);
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if (++counter == colourArray.size())
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counter = 0;
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}
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}
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}
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/** Sets which colour should be active for a given touch co-ordinate. Returns
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true if the colour has changed
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*/
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bool setActiveColourForTouch (int x, int y)
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{
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bool colourHasChanged = false;
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int xindex = x / 5;
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int yindex = y / 5;
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Colour newColour = colourArray.getUnchecked ((yindex * 3) + xindex);
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if (currentColour != newColour)
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{
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currentColour = newColour;
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constructGridFillArray();
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colourHasChanged = true;
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}
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return colourHasChanged;
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}
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//==============================================================================
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int numColumns, numRows;
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Array<DrumPadGridProgram::GridFill> gridFillArray;
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Array<Colour> colourArray = { Colours::white, Colours::red, Colours::green,
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Colours::blue, Colours::hotpink, Colours::orange,
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Colours::magenta, Colours::cyan, Colours::black };
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Colour currentColour = Colours::hotpink;
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//==============================================================================
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (ColourGrid)
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};
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//==============================================================================
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/**
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The main component
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*/
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class MainComponent : public Component,
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public TopologySource::Listener,
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private TouchSurface::Listener,
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private ControlButton::Listener,
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private LightpadComponent::Listener,
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private Button::Listener,
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private Slider::Listener,
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private Timer
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{
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public:
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MainComponent()
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{
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activeLeds.clear();
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// Register MainContentComponent as a listener to the PhysicalTopologySource object
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topologySource.addListener (this);
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infoLabel.setText ("Connect a Lightpad Block to draw.", dontSendNotification);
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infoLabel.setJustificationType (Justification::centred);
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addAndMakeVisible (infoLabel);
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addAndMakeVisible (lightpadComponent);
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lightpadComponent.setVisible (false);
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lightpadComponent.addListener (this);
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clearButton.setButtonText ("Clear");
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clearButton.addListener (this);
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clearButton.setAlwaysOnTop (true);
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addAndMakeVisible (clearButton);
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brightnessSlider.setRange (0.0, 1.0);
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brightnessSlider.setValue (1.0);
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brightnessSlider.setAlwaysOnTop (true);
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brightnessSlider.setTextBoxStyle (Slider::TextEntryBoxPosition::NoTextBox, false, 0, 0);
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brightnessSlider.addListener (this);
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addAndMakeVisible (brightnessSlider);
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brightnessLED.setAlwaysOnTop (true);
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brightnessLED.setColour (layout.currentColour.withBrightness (static_cast<float> (brightnessSlider.getValue())));
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addAndMakeVisible (brightnessLED);
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#if JUCE_IOS
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connectButton.setButtonText ("Connect");
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connectButton.addListener (this);
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connectButton.setAlwaysOnTop (true);
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addAndMakeVisible (connectButton);
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#endif
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setSize (600, 600);
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}
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~MainComponent()
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{
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if (activeBlock != nullptr)
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detachActiveBlock();
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lightpadComponent.removeListener (this);
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}
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void paint (Graphics& g) override
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{
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g.fillAll (Colours::lightgrey);
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}
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void resized() override
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{
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infoLabel.centreWithSize (getWidth(), 100);
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Rectangle<int> bounds = getLocalBounds().reduced (20);
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// top buttons
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Rectangle<int> topButtonArea = bounds.removeFromTop (getHeight() / 20);
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topButtonArea.removeFromLeft (20);
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clearButton.setBounds (topButtonArea.removeFromLeft (80));
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#if JUCE_IOS
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topButtonArea.removeFromRight (20);
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connectButton.setBounds (topButtonArea.removeFromRight (80));
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#endif
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bounds.removeFromTop (20);
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// brightness controls
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Rectangle<int> brightnessControlBounds;
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Desktop::DisplayOrientation orientation = Desktop::getInstance().getCurrentOrientation();
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if (orientation == Desktop::DisplayOrientation::upright || orientation == Desktop::DisplayOrientation::upsideDown)
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{
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brightnessControlBounds = bounds.removeFromBottom (getHeight() / 10);
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brightnessSlider.setSliderStyle (Slider::SliderStyle::LinearHorizontal);
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brightnessLED.setBounds (brightnessControlBounds.removeFromLeft (getHeight() / 10));
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brightnessSlider.setBounds (brightnessControlBounds);
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}
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else
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{
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brightnessControlBounds = bounds.removeFromRight (getWidth() / 10);
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brightnessSlider.setSliderStyle (Slider::SliderStyle::LinearVertical);
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brightnessLED.setBounds (brightnessControlBounds.removeFromTop (getWidth() / 10));
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brightnessSlider.setBounds (brightnessControlBounds);
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}
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// lightpad component
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int sideLength = jmin (bounds.getWidth() - 40, bounds.getHeight() - 40);
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lightpadComponent.centreWithSize (sideLength, sideLength);
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}
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/** Overridden from TopologySource::Listener. Called when the topology changes */
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void topologyChanged() override
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{
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lightpadComponent.setVisible (false);
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infoLabel.setVisible (true);
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// Reset the activeBlock object
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if (activeBlock != nullptr)
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detachActiveBlock();
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// Get the array of currently connected Block objects from the PhysicalTopologySource
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Block::Array blocks = topologySource.getCurrentTopology().blocks;
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// Iterate over the array of Block objects
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for (auto b : blocks)
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{
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// Find the first Lightpad
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if (b->getType() == Block::Type::lightPadBlock)
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{
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activeBlock = b;
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// Register MainContentComponent as a listener to the touch surface
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if (auto surface = activeBlock->getTouchSurface())
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surface->addListener (this);
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// Register MainContentComponent as a listener to any buttons
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for (auto button : activeBlock->getButtons())
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button->addListener (this);
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// Get the LEDGrid object from the Lightpad and set its program to the program for the current mode
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if (auto grid = activeBlock->getLEDGrid())
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{
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// Work out scale factors to translate X and Y touches to LED indexes
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scaleX = (float) (grid->getNumColumns()) / activeBlock->getWidth();
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scaleY = (float) (grid->getNumRows()) / activeBlock->getHeight();
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setLEDProgram (grid);
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}
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// Make the on screen Lighpad component visible
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lightpadComponent.setVisible (true);
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infoLabel.setVisible (false);
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break;
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}
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}
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}
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private:
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/** Overridden from TouchSurface::Listener. Called when a Touch is received on the Lightpad */
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void touchChanged (TouchSurface&, const TouchSurface::Touch& touch) override
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{
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// Translate X and Y touch events to LED indexes
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int xLed = roundToInt (touch.x * scaleX);
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int yLed = roundToInt (touch.y * scaleY);
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if (currentMode == colourPalette)
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{
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if (layout.setActiveColourForTouch (xLed, yLed))
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{
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colourPaletteProgram->setGridFills (layout.numColumns, layout.numRows, layout.gridFillArray);
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brightnessLED.setColour (layout.currentColour.withBrightness (layout.currentColour == Colours::black ? 0.0f
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: static_cast<float> (brightnessSlider.getValue())));
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}
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}
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else if (currentMode == canvas)
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{
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drawLED ((uint32) xLed, (uint32) yLed, touch.z, layout.currentColour);
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}
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}
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/** Overridden from ControlButton::Listener. Called when a button on the Lightpad is pressed */
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void buttonPressed (ControlButton&, Block::Timestamp) override { }
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/** Overridden from ControlButton::Listener. Called when a button on the Lightpad is released */
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void buttonReleased (ControlButton&, Block::Timestamp) override
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{
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if (currentMode == canvas)
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{
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// Wait 500ms to see if there is a second press
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if (! isTimerRunning())
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startTimer (500);
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else
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doublePress = true;
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}
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else if (currentMode == colourPalette)
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{
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// Switch to canvas mode and set the LEDGrid program
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currentMode = canvas;
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setLEDProgram (activeBlock->getLEDGrid());
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}
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}
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void buttonClicked (Button* b) override
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{
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#if JUCE_IOS
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if (b == &connectButton)
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{
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BluetoothMidiDevicePairingDialogue::open();
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return;
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}
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#else
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ignoreUnused (b);
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#endif
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clearLEDs();
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}
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void sliderValueChanged (Slider* s) override
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{
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if (s == &brightnessSlider)
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brightnessLED.setColour (layout.currentColour.withBrightness (layout.currentColour == Colours::black ? 0.0f
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: static_cast<float> (brightnessSlider.getValue())));
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}
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void timerCallback() override
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{
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if (doublePress)
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{
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clearLEDs();
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// Reset the doublePress flag
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doublePress = false;
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}
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else
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{
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// Switch to colour palette mode and set the LEDGrid program
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currentMode = colourPalette;
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setLEDProgram (activeBlock->getLEDGrid());
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}
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stopTimer();
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}
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void ledClicked (int x, int y, float z) override
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{
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drawLED ((uint32) x, (uint32) y, z == 0.0f ? static_cast<float> (brightnessSlider.getValue())
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: z * static_cast<float> (brightnessSlider.getValue()), layout.currentColour);
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}
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/** Removes TouchSurface and ControlButton listeners and sets activeBlock to nullptr */
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void detachActiveBlock()
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{
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if (auto surface = activeBlock->getTouchSurface())
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surface->removeListener (this);
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for (auto button : activeBlock->getButtons())
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button->removeListener (this);
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activeBlock = nullptr;
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}
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/** Sets the LEDGrid Program for the selected mode */
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void setLEDProgram (LEDGrid* grid)
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{
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canvasProgram = nullptr;
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colourPaletteProgram = nullptr;
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if (currentMode == canvas)
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{
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// Create a new BitmapLEDProgram for the LEDGrid
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canvasProgram = new BitmapLEDProgram (*grid);
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// Set the LEDGrid program
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grid->setProgram (canvasProgram);
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// Redraw any previously drawn LEDs
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redrawLEDs();
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}
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else if (currentMode == colourPalette)
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{
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// Create a new DrumPadGridProgram for the LEDGrid
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colourPaletteProgram = new DrumPadGridProgram (*grid);
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// Set the LEDGrid program
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grid->setProgram (colourPaletteProgram);
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// Setup the grid layout
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colourPaletteProgram->setGridFills (layout.numColumns,
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layout.numRows,
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layout.gridFillArray);
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}
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}
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void clearLEDs()
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{
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// Clear the LED grid
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for (uint32 x = 0; x < 15; ++x)
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{
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for (uint32 y = 0; y < 15; ++ y)
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{
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if (canvasProgram != nullptr)
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canvasProgram->setLED (x, y, Colours::black);
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lightpadComponent.setLEDColour (x, y, Colours::black);
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}
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}
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// Clear the ActiveLED array
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activeLeds.clear();
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}
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/** Sets an LED on the Lightpad for a given touch co-ordinate and pressure */
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void drawLED (uint32 x0, uint32 y0, float z, Colour drawColour)
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{
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// Check if the activeLeds array already contains an ActiveLED object for this LED
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auto index = getLEDAt (x0, y0);
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// If the colour is black then just set the LED to black and return
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if (drawColour == Colours::black)
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{
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if (index >= 0)
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{
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if (canvasProgram != nullptr)
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canvasProgram->setLED (x0, y0, Colours::black);
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lightpadComponent.setLEDColour (x0, y0, Colours::black);
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activeLeds.remove (index);
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}
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return;
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}
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// If there is no ActiveLED obejct for this LED then create one,
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// add it to the array, set the LED on the Block and return
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if (index < 0)
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{
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ActiveLED led;
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led.x = x0;
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led.y = y0;
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led.colour = drawColour;
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led.brightness = z;
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activeLeds.add (led);
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if (canvasProgram != nullptr)
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canvasProgram->setLED (led.x, led.y, led.colour.withBrightness (led.brightness));
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lightpadComponent.setLEDColour (led.x, led.y, led.colour.withBrightness (led.brightness));
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return;
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}
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// Get the ActiveLED object for this LED
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ActiveLED currentLed = activeLeds.getReference (index);
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// If the LED colour is the same as the draw colour, add the brightnesses together.
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// If it is different, blend the colours
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if (currentLed.colour == drawColour)
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currentLed.brightness = jmin (currentLed.brightness + z, 1.0f);
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else
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currentLed.colour = currentLed.colour.interpolatedWith (drawColour, z);
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// Set the LED on the Block and change the ActiveLED object in the activeLeds array
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if (canvasProgram != nullptr)
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canvasProgram->setLED (currentLed.x, currentLed.y, currentLed.colour.withBrightness (currentLed.brightness));
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lightpadComponent.setLEDColour (currentLed.x, currentLed.y, currentLed.colour.withBrightness (currentLed.brightness));
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activeLeds.set (index, currentLed);
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}
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/** Redraws the LEDs on the Lightpad from the activeLeds array */
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void redrawLEDs()
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{
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// Iterate over the activeLeds array and set the LEDs on the Block
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for (auto led : activeLeds)
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{
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canvasProgram->setLED (led.x, led.y, led.colour.withBrightness (led.brightness));
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lightpadComponent.setLEDColour (led.x, led.y, led.colour.withBrightness (led.brightness));
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}
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}
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/**
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A struct that represents an active LED on the Lightpad.
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Has a position, colour and brightness.
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*/
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struct ActiveLED
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{
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uint32 x, y;
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Colour colour;
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float brightness;
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/** Returns true if this LED occupies the given co-ordinates */
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bool occupies (uint32 xPos, uint32 yPos) const
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{
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return xPos == x && yPos == y;
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}
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};
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Array<ActiveLED> activeLeds;
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int getLEDAt (uint32 x, uint32 y) const
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{
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for (int i = 0; i < activeLeds.size(); ++i)
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if (activeLeds.getReference(i).occupies (x, y))
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return i;
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return -1;
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}
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//==============================================================================
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enum DisplayMode
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{
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colourPalette = 0,
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canvas
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};
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DisplayMode currentMode = colourPalette;
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//==============================================================================
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BitmapLEDProgram* canvasProgram = nullptr;
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DrumPadGridProgram* colourPaletteProgram = nullptr;
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ColourGrid layout { 3, 3 };
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PhysicalTopologySource topologySource;
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Block::Ptr activeBlock;
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float scaleX = 0.0;
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float scaleY = 0.0;
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bool doublePress = false;
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//==============================================================================
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Label infoLabel;
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LightpadComponent lightpadComponent;
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TextButton clearButton;
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LEDComponent brightnessLED;
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Slider brightnessSlider;
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#if JUCE_IOS
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TextButton connectButton;
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#endif
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//==============================================================================
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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MainComponent)
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};
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#endif // MAINCOMPONENT_H_INCLUDED
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