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added multiple listeners, moved PApplet to LaunchpadPAppletListener
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Tobias Bielohlawek committed Dec 11, 2009
1 parent 52519bb commit db1cb92
Showing 1 changed file with 98 additions and 99 deletions.
197 changes: 98 additions & 99 deletions src/com/rngtng/launchpad/Launchpad.java
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
/*
A nice wrapper class to controll the novation launchpad
(c) copyright 2009 by rngtng - Tobias Bielohlawek
Expand All @@ -21,11 +21,14 @@

package com.rngtng.launchpad;

import java.util.Vector;

import javax.sound.midi.MidiMessage;

import processing.core.PApplet;
import processing.core.PImage;
import themidibus.*;
import themidibus.MidiBus;
import themidibus.StandardMidiListener;

/**
* this is a template class and can be used to start a new processing library.
Expand All @@ -46,11 +49,7 @@ public class Launchpad implements LMidiCodes, StandardMidiListener {

public final String VERSION = "0.2";

private Method buttonPressedMethod;
private Method buttonReleasedMethod;
private Method gridPressedMethod;
private Method gridReleasedMethod;

Vector<LaunchpadListener> listeners;

public Launchpad(PApplet _app) {
this(_app, "Launchpad", "Launchpad");
Expand All @@ -70,35 +69,11 @@ public Launchpad(PApplet _app, String inputName, String outputName) {
app.registerDispose(this);
midiBus = new MidiBus(_app, inputName, outputName);
midiBus.addMidiListener(this);
getMethods(_app);
}

protected void getMethods(Object parent) {
Class[] argsGrid = new Class[] {int.class, int.class};
try {
gridPressedMethod = parent.getClass().getDeclaredMethod( "launchpadGridPressed", argsGrid);
} catch (NoSuchMethodException e) {
// not a big deal if they aren't implemented
}
try {
gridReleasedMethod = parent.getClass().getDeclaredMethod( "launchpadGridReleased", argsGrid);
} catch (NoSuchMethodException e) {
// not a big deal if they aren't implemented
}

Class[] argsButton = new Class[] { int.class};
try {
buttonPressedMethod = parent.getClass().getDeclaredMethod( "launchpadButtonPressed", argsButton);
} catch (NoSuchMethodException e) {
// not a big deal if they aren't implemented
}
try {
buttonReleasedMethod = parent.getClass().getDeclaredMethod( "launchpadButtonReleased", argsButton);
} catch (NoSuchMethodException e) {
// not a big deal if they aren't implemented
}
listeners = new Vector<LaunchpadListener>();
addListener(new LaunchadPAppletListener(_app));
}

public void dispose() {
midiBus.close();
}
Expand All @@ -112,6 +87,38 @@ public String version() {
return VERSION;
}

/* -- Listener Handling -- */

/**
* Adds a listener who will be notified each time a new MIDI message is received from a MIDI input device. If the listener has already been added, it will not be added again.
*
* @param listener the listener to add.
* @return true if and only the listener was sucessfully added.
* @see #removeListener(LaunchpadListener listener)
*/
public boolean addListener(LaunchpadListener listener) {
for(LaunchpadListener current : listeners) if(current == listener) return false;
listeners.add(listener);
return true;
}

/**
* Removes a given listener.
*
* @param listener the listener to remove.
* @return true if and only the listener was sucessfully removed.
* @see #addListener(LaunchpadListener listener)
*/
public boolean removeListener(LaunchpadListener listener) {
for(LaunchpadListener current : listeners) {
if(current == listener) {
listeners.remove(listener);
return true;
}
}
return false;
}

/**
* Resets the launchpad - all settings are reset and all LEDs are switched off.
*
Expand All @@ -132,8 +139,8 @@ public void reset() {
*
* [Launchpad::NoOutputAllowedError] when output is not enabled
*/
public void test_leds() {
test_leds(LColor.HIGH);
public void testLeds() {
testLeds(LColor.HIGH);
}

/**
Expand All @@ -147,7 +154,7 @@ public void test_leds() {
*
* [Launchpad::NoOutputAllowedError] when output is not enabled
*/
public void test_leds(int brightness) {
public void testLeds(int brightness) {
if(brightness == 0) {
reset();
}
Expand Down Expand Up @@ -193,15 +200,15 @@ public void changeButton(int buttonCode, int red, int green) {
* @param buttonCode Code of the button
* @param red brightness of red LED
* @param green brightness of green LED
* @param mode brightness of green LED
* @param mode brightness of green LED
*
* Errors raised:
* [Launchpad::NoValidGridCoordinatesError] when coordinates aren't within the valid range
* [Launchpad::NoValidBrightnessError] when brightness values aren't within the valid range
* [Launchpad::NoOutputAllowedError] when output is not enabled
*/
public void changeButton(int buttonCode, int red, int green, int mode) {
//if(!isButtonCode(buttonCode)) throw
//if(!isButtonCode(buttonCode)) throw
int status = (isSceneButtonCode(buttonCode)) ? STATUS_ON : STATUS_CC;
output(status, buttonCode, LColor.velocity(red, green, mode));
}
Expand All @@ -212,7 +219,7 @@ public void changeButton(int buttonCode, int red, int green, int mode) {
* @param x x coordinate
* @param y y coordinate
* @param c LColor object
*
*
* Errors raised:
* [Launchpad::NoValidGridCoordinatesError] when coordinates aren't within the valid range
* [Launchpad::NoValidBrightnessError] when brightness values aren't within the valid range
Expand Down Expand Up @@ -358,15 +365,15 @@ public void change_all(PImage image) {
// send colors in slices of 2
for(int i = 0; i < 80; i = i + 2) {
try {
param1 = 4 * app.red(image.pixels[i]) / 255;
param1 = (int) (4 * app.red(image.pixels[i]) / 255);
} catch (ArrayIndexOutOfBoundsException e) {
param1 = 0;
} catch (NullPointerException e) {
param1 = 0;
}

try {
param2 = 4 * app.green(image.pixels[i+1]) / 255;
param2 = (int) (4 * app.green(image.pixels[i+1]) / 255);
} catch (ArrayIndexOutOfBoundsException e) {
param2 = 0;
} catch (NullPointerException e) {
Expand Down Expand Up @@ -435,66 +442,58 @@ public void buffering_mode(int display_buffer, int update_buffer, boolean copy,
output(STATUS_CC, STATUS_NIL, data);
}

/**
* Reads user actions (button presses/releases) that haven't been handled yet and invokes a button
* or grid event
*
* @param message the MIDI message
*
* @todo custom/multiple listener??
*
* Errors raised:
* [Launchpad::NoInputAllowedError] when input is not enabled
*/
public void midiMessage(MidiMessage message) {
int code = message.getStatus();
int note = message.getMessage()[1] & 0xFF;
int velocity = message.getMessage()[2] & 0xFF;

//process button event
Method m = (velocity == 127) ? buttonPressedMethod : buttonReleasedMethod;
if(code == STATUS_CC || (code == STATUS_ON || code == STATUS_OFF) && isSceneButtonCode(note)) {
if (m == null) return;
try {
m.invoke(app, new int[]{ note }); // param is: buttonCode
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
PApplet.println("Button :" + note);
return;
}

//process grid event
Method m = (velocity == 127) ? gridPressedMethod : gridReleasedMethod;
if( code == STATUS_ON || code == STATUS_OFF) {
if (m == null) return;
try {
m.invoke(app, new int[]{ (note % 16), (note / 16) }); // params are: x, y
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
PApplet.println("x:" + (note % 16) + " y:" + (note / 16));
return;
}

PApplet.print("Huston we've an unimplemented MIDI Message: " + message.getStatus());
if(message.getMessage().length > 1) PApplet.print(" Param 1: " + (message.getMessage()[1] & 0xFF) );
if(message.getMessage().length > 2) PApplet.print(" Param 2: " + (message.getMessage()[2] & 0xFF) );
PApplet.println();
}
/**
* Reads user actions (button presses/releases) that haven't been handled yet and invokes a button
* or grid event
*
* @param message the MIDI message
*
* Errors raised:
* [Launchpad::NoInputAllowedError] when input is not enabled
*/
public void midiMessage(MidiMessage message) {
int code = message.getStatus();
int note = message.getMessage()[1] & 0xFF;
int velocity = message.getMessage()[2] & 0xFF;

//process button event
if(code == STATUS_CC || (code == STATUS_ON || code == STATUS_OFF) && isSceneButtonCode(note)) {
for(LaunchpadListener listener : listeners) {
if(velocity == 127) {
listener.launchpadButtonPressed(note);
}
else {
listener.launchpadButtonReleased(note);
}
}
PApplet.println("Button :" + note);
return;
}

//process grid event
if( code == STATUS_ON || code == STATUS_OFF) {
for(LaunchpadListener listener : listeners) {
if(velocity == 127) {
listener.launchpadGridPressed(note % 16, note / 16);
}
else {
listener.launchpadGridReleased(note % 16, note / 16);
}
}
PApplet.println("x:" + (note % 16) + " y:" + (note / 16));
return;
}

PApplet.print("Huston we've an unimplemented MIDI Message: " + message.getStatus());
if(message.getMessage().length > 1) PApplet.print(" Param 1: " + (message.getMessage()[1] & 0xFF) );
if(message.getMessage().length > 2) PApplet.print(" Param 2: " + (message.getMessage()[2] & 0xFF) );
PApplet.println();
}

/**
* Writes a messages to the MIDI device.
*
*/
*/
private void output(int status, int data1, int data2) {
//raise NoOutputAllowedError if @output.nil?
midiBus.sendMessage(new byte[]{ (byte) status, (byte) data1, (byte) data2});
Expand All @@ -504,7 +503,7 @@ private void output(int status, int data1, int data2) {
* checks for valid button code
*
* @param buttonCode code of the button
* @return boolean wether code is valid
* @return boolean if code is valid
*/
private boolean isButtonCode(int buttonCode) {
if(buttonCode == BUTTON_UP) return true;
Expand Down

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