mirror of
https://github.com/juce-framework/JUCE.git
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379 lines
12 KiB
C++
379 lines
12 KiB
C++
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#ifndef MAINCOMPONENT_H_INCLUDED
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#define MAINCOMPONENT_H_INCLUDED
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#include "../JuceLibraryCode/JuceHeader.h"
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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 ? 1.0 : 0.1);
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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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float width, height;
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Array<DrumPadGridProgram::GridFill> gridFillArray;
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Array<Colour> colourArray = { Colours::white, Colours::red, Colours::green, Colours::blue, Colours::hotpink,
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Colours::orange, 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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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 Timer
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{
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public:
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MainComponent() : layout (3, 3)
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{
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setSize (600, 400);
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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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}
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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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}
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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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/** Overridden from TopologySource::Listener. Called when the topology changes */
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void topologyChanged() override
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{
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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() - 1) / activeBlock->getWidth();
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scaleY = (float) (grid->getNumRows() - 1) / activeBlock->getHeight();
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setLEDProgram (grid);
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}
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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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colourPaletteProgram->setGridFills (layout.numColumns, layout.numRows, layout.gridFillArray);
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}
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else if (currentMode == canvas)
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{
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drawLEDs ((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 timerCallback() override
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{
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if (doublePress)
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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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for (uint32 y = 0; y < 15; ++ y)
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canvasProgram->setLED (x, y, Colours::black);
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// Clear the ActiveLED array
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activeLeds.clear();
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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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/** 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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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, layout.numRows, layout.gridFillArray);
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}
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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 drawLEDs (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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int index = -1;
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for (int i = 0; i < activeLeds.size(); ++i)
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{
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if (activeLeds.getReference(i).occupies (x0, y0))
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{
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index = i;
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break;
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}
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}
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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 != -1)
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{
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canvasProgram->setLED (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 == -1)
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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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canvasProgram->setLED (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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canvasProgram->setLED (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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canvasProgram->setLED (led.x, led.y, led.colour.withBrightness (led.brightness));
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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;
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uint32 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-ordiantes */
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bool occupies (uint32 xPos, uint32 yPos) const
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{
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if (xPos == x && yPos == y)
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return true;
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return false;
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}
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};
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Array<ActiveLED> activeLeds;
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/**
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enum for the two modes
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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;
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DrumPadGridProgram* colourPaletteProgram;
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ColourGrid layout;
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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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JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MainComponent)
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};
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#endif // MAINCOMPONENT_H_INCLUDED
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