VocalEasel/Sources/VLSheetViewNotes.mm

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//
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// File: VLSheetViewNotes.mm - Melody editing functionality
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//
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// Author(s):
//
// (MN) Matthias Neeracher
//
// Copyright © 2005-2007 Matthias Neeracher
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//
#import "VLSheetView.h"
#import "VLSheetViewNotes.h"
#import "VLSheetViewInternal.h"
#import "VLDocument.h"
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#import "VLSoundOut.h"
#include <algorithm>
@implementation VLSheetView (Notes)
- (void) addNoteAtCursor
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{
if (fCursorMeasure > -1) {
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VLNote newNote(1, fClickMode==' ' ? fCursorActualPitch : VLNote::kNoPitch);
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[[self document] willChangeSong];
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if (fCursorAccidental == kMusicExtendCursor)
[self song]->ExtendNote(fCursorMeasure, fCursorAt);
else if (fClickMode == 'k')
[self song]->DelNote(fCursorMeasure, fCursorAt);
else
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[self song]->AddNote(VLLyricsNote(newNote), fCursorMeasure, fCursorAt);
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[[self document] didChangeSong];
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if (fClickMode == ' ')
VLSoundOut::Instance()->PlayNote(newNote);
else
fClickMode = ' ';
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}
}
- (void) startKeyboardCursor
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{
if (fCursorMeasure < 0) {
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fCursorMeasure = 0;
fCursorPitch = VLNote::kMiddleC;
fCursorActualPitch = fCursorPitch;
fCursorAt = VLFraction(0);
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}
}
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- (void) drawLedgerLinesWithPitch:(int)pitch at:(NSPoint)p
{
p.x += kLedgerX;
int octave = (pitch / 12) - 5;
int step = (octave*7+[self stepWithPitch:pitch]-2)/2;
for (int i=0; i-- > step; ) {
NSPoint p0 = p;
p0.y += i*kLineH;
NSPoint p1 = p0;
p1.x += kLedgerW;
[NSBezierPath strokeLineFromPoint:p0 toPoint:p1];
}
for (int i=4; i++ < step; ) {
NSPoint p0 = p;
p0.y += i*kLineH;
NSPoint p1 = p0;
p1.x += kLedgerW;
[NSBezierPath strokeLineFromPoint:p0 toPoint:p1];
}
}
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- (void) drawNoteCursor
{
int cursorX;
int cursorY;
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VLMusicElement accidental;
VLMusicElement cursorElt;
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cursorX = [self noteXInMeasure:fCursorMeasure at:fCursorAt];
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if (fCursorAccidental == kMusicExtendCursor) {
cursorY =
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[self noteYInMeasure:fCursorMeasure
withPitch:fCursorPitch
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accidental:&accidental];
cursorElt = fCursorAccidental;
} else
switch (fClickMode) {
default:
cursorY =
[self noteYInMeasure:fCursorMeasure
withPitch:fCursorPitch accidental:&accidental] - kNoteY;
[self drawLedgerLinesWithPitch:fCursorPitch
at:NSMakePoint(cursorX,
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[self systemY:fLayout->SystemForMeasure(fCursorMeasure)])];
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cursorElt = kMusicNoteCursor;
break;
case 'r':
cursorY = [self noteYInMeasure:fCursorMeasure
withPitch:65 accidental:&accidental];
cursorElt = kMusicRestCursor;
break;
case 'k':
cursorY = [self noteYInMeasure:fCursorMeasure
withPitch:fCursorPitch accidental:&accidental];
cursorElt = kMusicKillCursor;
break;
}
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NSPoint at = NSMakePoint(cursorX-kNoteX, cursorY);
[[self musicElement:cursorElt]
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compositeToPoint:at
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operation: NSCompositeSourceOver];
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if (fCursorAccidental && fCursorAccidental != kMusicExtendCursor) {
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at.y += kNoteY;
switch (cursorElt= fCursorAccidental) {
case kMusicFlatCursor:
at.x += kFlatW;
at.y += kFlatY;
break;
case kMusicSharpCursor:
at.x += kSharpW;
at.y += kSharpY;
break;
default:
at.x += kNaturalW;
at.y += kNaturalY;
break;
}
[[self musicElement:cursorElt]
compositeToPoint:at
operation: NSCompositeSourceOver];
}
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}
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- (void) drawNote:(int)visual at:(NSPoint)p
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accidental:(VLMusicElement)accidental tied:(BOOL)tied
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{
NSPoint s = p;
NSPoint c = p;
p.x -= kNoteX;
p.y -= kNoteY;
s.x += kNoteX+kStemX;
s.y += kStemY;
//
// Draw note head
//
NSImage * head;
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switch (visual & VLNote::kNoteHead) {
case VLNote::kWhole:
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head = [self musicElement:kMusicWholeNote];
break;
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case VLNote::kHalf:
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head = [self musicElement:kMusicHalfNote];
s.x -= 1.0f;
break;
default:
head = [self musicElement:kMusicNote];
s.x -= 2.0f;
break;
}
[head compositeToPoint:p
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operation: NSCompositePlusDarker];
//
// Draw accidental
//
if (accidental) {
NSPoint at = p;
at.y += kNoteY;
switch (accidental) {
case kMusicSharp:
at.x += kSharpW;
at.y += kSharpY;
break;
case kMusicFlat:
at.x += kFlatW;
at.y += kFlatY;
break;
case kMusicNatural:
at.x += kNaturalW;
at.y += kNaturalY;
break;
}
[[self musicElement:accidental]
compositeToPoint:at operation: NSCompositeSourceOver];
}
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//
// Draw stem
//
//
//
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if (visual > 0) {
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NSBezierPath * bz = [NSBezierPath bezierPath];
NSPoint s1 = NSMakePoint(s.x, s.y+kStemH);
NSImage * flag = nil;
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switch (visual) {
case VLNote::kEighth:
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flag = [self musicElement:kMusicEighthFlag];
break;
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case VLNote::k16th:
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flag = [self musicElement:kMusicSixteenthFlag];
s1.y += 5.0f;
break;
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case VLNote::k32nd:
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flag = [self musicElement:kMusicThirtysecondthFlag];
s1.y += 13.0f;
break;
}
[[NSColor blackColor] set];
[bz setLineWidth:2.0f];
[bz moveToPoint:s];
[bz lineToPoint:s1];
[bz stroke];
if (flag)
[flag compositeToPoint:s
operation: NSCompositePlusDarker];
}
//
// Draw tie
//
if (tied) {
NSPoint mid =
NSMakePoint(0.5f*(fLastNoteCenter.x+c.x),
0.5f*(fLastNoteCenter.y+c.y));
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NSPoint dir = NSMakePoint(c.y-mid.y, c.x-mid.x);
float n = dir.x*dir.x+dir.y*dir.y;
float r = (kTieDepth*kTieDepth+n) / (2.0f*kTieDepth);
float l = (r-kTieDepth) / sqrtf(n);
mid.x += dir.x*l;
mid.y += dir.y*l;
float a1 = atan2(fLastNoteCenter.y-mid.y, fLastNoteCenter.x-mid.x);
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float a2 = atan2(c.y-mid.y, c.x-mid.x);
NSBezierPath * bz = [NSBezierPath bezierPath];
[bz appendBezierPathWithArcWithCenter:mid radius:r
startAngle:a1*180.0f/M_PI endAngle:a2*180.0f/M_PI];
[bz stroke];
}
fLastNoteCenter = c;
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}
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- (void) drawRest:(int)visual at:(NSPoint)p
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{
//
// Draw rest
//
NSImage * head = nil;
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switch (visual) {
case VLNote::kWhole:
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head = [self musicElement:kMusicWholeRest];
p.y += kWholeRestY;
break;
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case VLNote::kHalf:
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head = [self musicElement:kMusicHalfRest];
p.y += kHalfRestY;
break;
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case VLNote::kQuarter:
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head = [self musicElement:kMusicQuarterRest];
p.x -= kNoteX;
break;
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case VLNote::kEighth:
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head = [self musicElement:kMusicEighthRest];
p.x -= kNoteX;
break;
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case VLNote::k16th:
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head = [self musicElement:kMusicSixteenthRest];
p.x -= kNoteX;
break;
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case VLNote::k32nd:
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head = [self musicElement:kMusicThirtysecondthRest];
p.x -= kNoteX;
break;
}
[head compositeToPoint:p
operation: NSCompositeSourceOver];
}
- (void) drawNotesForSystem:(int)system
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{
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const int kFirstMeas = fLayout->FirstMeasure(system);
const VLSong * song = [self song];
const VLProperties & kProp =
song->fProperties[song->fMeasures[kFirstMeas].fPropIdx];
const VLSystemLayout & kLayout = (*fLayout)[system];
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float kSystemY = [self systemY:system];
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for (int m = 0; m<kLayout.NumMeasures(); ++m) {
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VLMusicElement accidentals[7];
memset(accidentals, 0, 7*sizeof(VLMusicElement));
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int measIdx = m+kFirstMeas;
if (measIdx >= song->CountMeasures())
break;
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const VLMeasure & measure = song->fMeasures[measIdx];
VLNoteList melody;
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measure.DecomposeNotes(kProp, melody);
VLFraction at(0);
for (VLNoteList::const_iterator note = melody.begin();
note != melody.end();
++note
) {
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BOOL tied = (note != melody.begin() || m)
&& note->fTied & VLNote::kTiedWithPrev;
int pitch = note->fPitch;
if (pitch != VLNote::kNoPitch) {
[self drawLedgerLinesWithPitch:pitch
at:NSMakePoint([self noteXInMeasure:m at:at], kSystemY)];
VLMusicElement accidental;
NSPoint pos =
NSMakePoint([self noteXInMeasure:m at:at],
kSystemY+[self noteYWithPitch:pitch
accidental:&accidental]);
VLMusicElement acc = accidental;
int step= [self stepWithPitch:pitch];
if (acc == accidentals[step])
acc = kMusicNothing; // Don't repeat accidentals
else if (acc == kMusicNothing)
if (accidentals[step] == kMusicNatural) // Resume signature
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acc = kProp.fKey < 0 ? kMusicFlat : kMusicSharp;
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else
acc = kMusicNatural;
[self drawNote:note->fVisual & VLNote::kNoteHead
at: pos
accidental: acc
tied:tied];
accidentals[step] = accidental;
} else {
VLMusicElement accidental;
NSPoint pos =
NSMakePoint([self noteXInMeasure:m at:at],
kSystemY+[self noteYWithPitch:65
accidental:&accidental]);
[self drawRest:note->fVisual & VLNote::kNoteHead at: pos];
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}
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at += note->fDuration;
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}
}
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if (fCursorPitch != VLNote::kNoPitch && fLayout->SystemForMeasure(fCursorMeasure) == system)
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[self drawNoteCursor];
}
@end