void PianoKeyBoard::createKeys()
{
keys_->removeAllObjects();
float x = 0;
for (int i=lowNote_; i<=highNote_; ++i)
{
PianoKey *key = new PianoKey();
KEYTYPE type = getKeyType(i);
Point pt = Point::ZERO ;
Rect rect;
if (isBlackKey(type))
{
pt.x = x - whiteKeyWidth_ + getBlackKeyOffset(i) ;
}
else
{
pt.x = x ;
x += whiteKeyWidth_ ;
}
if (isBlackKey(type))
{
rect = Rect(pt.x+20, pt.y+17, blackKeyWidth_, blackKeyHeight_);
}
else
{
int offset = int(x) - (int(pt.x) + int(whiteKeyWidth_)) ;
offset = (float)1.0/2;
rect = Rect(pt.x+20, pt.y+17, whiteKeyWidth_+offset, whiteKeyHeight_);
}
key->note_ = i;
key->type_ = type;
key->rect_ = rect;
key->position_ = pt;
key->down_ = false;
key->matching_ = false;
keys_->setObject(key, itoa(i));
key->release();
}
}
void MidiBlackKeyFilter::processMidiEvents (VstMidiEventVec *inputs, VstMidiEventVec *outputs, VstInt32 sampleFrames)
{
const int listenchannel = FLOAT_TO_CHANNEL(param[kInChannel]);
int BlackChannel = FLOAT_TO_CHANNEL(param[kBlackChannel]);
int WhiteChannel = FLOAT_TO_CHANNEL(param[kWhiteChannel]);
// process incoming events
for (unsigned int i=0;i<inputs[0].size();i++) {
//copying event "i" from input (with all its fields)
VstMidiEvent tomod = inputs[0][i];
unsigned int status = tomod.midiData[0] & 0xf0; // scraping channel
const int channel = tomod.midiData[0] & 0x0f; // isolating channel
const int data1 = tomod.midiData[1] & 0x7f;
const int data2 = tomod.midiData[2] & 0x7f;
// make zero-velocity noteons look like "real" noteoffs
if (status==MIDI_NOTEON && data2==0) status=MIDI_NOTEOFF;
if (channel == listenchannel || listenchannel == -1) {
if (status == MIDI_NOTEON) {
if (isBlackKey(data1)) {
if (BlackChannel==ANY_CHANNEL) BlackChannel = channel;
tomod.midiData[0] = MIDI_NOTEON | BlackChannel;
tomod.midiData[2] = midiLimit(roundToInt((float)data2 * 2.f * param[kBlackVelocity]));
}
else {
if (WhiteChannel==ANY_CHANNEL) WhiteChannel = channel;
tomod.midiData[0] = MIDI_NOTEON | WhiteChannel;
tomod.midiData[2] = midiLimit(roundToInt((float)data2 * 2.f * param[kWhiteVelocity]));
}
if (tomod.midiData[2]>0) playingOnChannel[data1][channel] = tomod.midiData[0]&0x0f;
}
else if (status == MIDI_NOTEOFF) {
if (isBlackKey(data1)) {
if (BlackChannel==ANY_CHANNEL) BlackChannel = channel;
tomod.midiData[0] = MIDI_NOTEOFF | BlackChannel;
}
else {
if (WhiteChannel==ANY_CHANNEL) WhiteChannel = channel;
tomod.midiData[0] = MIDI_NOTEOFF | WhiteChannel;
}
playingOnChannel[data1][channel] = -1;
}
}
outputs[0].push_back(tomod);
}
}
void PianoKeyBoard::calculateKeySize(cocos2d::Size size)
{
int whiteKeyCount = 0 ;
for ( int i=lowNote_; i<=highNote_; ++i )
{
if ( !isBlackKey(getKeyType(i)))
{
++whiteKeyCount ;
}
}
whiteKeyWidth_ = (size.width-42) / whiteKeyCount ;
whiteKeyHeight_ = 243 ;
blackKeyWidth_ = whiteKeyWidth_ * 16 /27 ;
blackKeyHeight_ = 124 ;
}
bool PizKeyboardComponent::mouseDownOnKey(int midiNoteNumber, const MouseEvent &e) {
midiKeyboardEditor* editor = ((midiKeyboardEditor*)(this->getParentComponent()));
if (e.mods.isAltDown())
{
editor->getFilter()->setParameter(kHidePanel,1.f-editor->getFilter()->getParameter(kHidePanel));
return false;
}
int l = isBlackKey(midiNoteNumber) ? this->getBlackNoteLength() : getHeight();
float velocity = editor->getFilter()->getParameter(kUseY)>=0.5f ? (float)e.getMouseDownY()/(float)l : editor->getFilter()->getParameter(kVelocity);
if (e.mods.isCtrlDown() || e.mods.isMiddleButtonDown()) {
s->allNotesOff(this->getMidiChannel());
_keysPressed.clear();
return false;
}
else if (e.mods.isShiftDown()) {
if (!e.mods.isPopupMenu()) setKeyPressBaseOctave(midiNoteNumber/12);
grabKeyboardFocus();
repaint();
return false;
}
else if (e.mods.isPopupMenu()!=toggle) {
if (s->isNoteOn(this->getMidiChannel(),midiNoteNumber)) {
s->noteOff(this->getMidiChannel(),midiNoteNumber);
}
else {
s->noteOn(this->getMidiChannel(),midiNoteNumber,velocity);
}
return false;
}
else {
if (!s->isNoteOn(this->getMidiChannel(),midiNoteNumber)) {
//s->noteOn(this->getMidiChannel(),midiNoteNumber,velocity);
this->setVelocity(velocity,false);
return true;
}
else {
s->noteOff(this->getMidiChannel(),midiNoteNumber);
return false;
}
}
return true;
}
bool Piano::isWhiteKey( int key )
{
return !isBlackKey( key );
}