VocalEasel/Sources/VLSheetView.mm
2006-10-08 05:56:25 +00:00

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//
// VLSheetView.mm
// Vocalese
//
// Created by Matthias Neeracher on 12/17/05.
// Copyright 2005 __MyCompanyName__. All rights reserved.
//
#import "VLSheetView.h"
#import "VLSheetViewInternal.h"
#import "VLSheetViewChords.h"
#import "VLSheetViewNotes.h"
#import "VLSoundOut.h"
#import "VLDocument.h"
#include <cmath>
@implementation VLSheetView
static NSImage ** sMusic;
static NSString * sElementNames[kMusicElements] = {
@"g-clef",
@"flat",
@"sharp",
@"natural",
@"whole-notehead",
@"half-notehead",
@"notehead",
@"whole-rest",
@"half-rest",
@"quarter-rest",
@"eighth-rest",
@"sixteenth-rest",
@"thirtysecondth-rest",
@"eighth-flag",
@"sixteenth-flag",
@"thirtysecondth-flag",
@"notecursor"
};
static float sSharpPos[] = {
4.0f*kLineH, // F#
2.5f*kLineH, // C#
4.5f*kLineH, // G#
3.0f*kLineH, // D#
1.5f*kLineH, // A#
3.5f*kLineH, // E#
2.0f*kLineH, // B#
};
static float sFlatPos[] = {
2.0f*kLineH, // Bb
3.5f*kLineH, // Eb
1.5f*kLineH, // Ab
3.0f*kLineH, // Db
1.0f*kLineH, // Gb
2.5f*kLineH, // Cb
0.5f*kLineH, // Fb
};
- (id)initWithFrame:(NSRect)frame
{
self = [super initWithFrame:frame];
if (self) {
if (!sMusic) {
NSBundle * b = [NSBundle mainBundle];
sMusic = new NSImage * [kMusicElements];
for (int i=0; i<kMusicElements; ++i) {
NSString * name =
[b pathForResource:sElementNames[i] ofType:@"eps"
inDirectory:@"Music"];
sMusic[i] = [[NSImage alloc] initWithContentsOfFile: name];
NSSize sz = [sMusic[i] size];
sz.width *= kImgScale;
sz.height*= kImgScale;
[sMusic[i] setScalesWhenResized:YES];
[sMusic[i] setSize:sz];
}
}
fNeedsRecalc = kFirstRecalc;
fIsRest = NO;
fDisplayScale = 1.0f;
fCursorPitch = VLNote::kNoPitch;
}
return self;
}
- (BOOL)acceptsFirstResponder
{
return YES;
}
- (VLDocument *) document
{
return [[[self window] windowController] document];
}
- (VLSong *) song
{
return [[self document] song];
}
- (NSImage *) musicElement:(VLMusicElement)elt
{
return sMusic[elt];
}
- (float) systemY:(int)system
{
NSRect b = [self bounds];
return kSystemY+b.origin.y+b.size.height-(system+1)*kSystemH;
}
- (float) noteYWithPitch:(int)pitch
{
int semi = pitch % 12;
int octave = (pitch / 12) - 5;
bool useSharps = [self song]->fProperties.front().fKey >= 0;
float y = octave*3.5f*kLineH;
float sharp = useSharps ? 0.0f : 0.5f*kLineH;
switch (semi) {
case 0: // C
return y-1.0f*kLineH;
case 1: // C# / Db
return y-1.0f*kLineH+sharp;
case 2: // D
return y-0.5f*kLineH;
case 3: // D# / Eb
return y-0.5f*kLineH+sharp;
case 4: // E
return y;
case 5: // F
return y+0.5f*kLineH;
case 6: // F# / Gb
return y+0.5f*kLineH+sharp;
case 7: // G
return y+1.0f*kLineH;
case 8: // G# / Ab
return y+1.0f*kLineH+sharp;
case 9: // A
return y+1.5f*kLineH;
case 10: // A# / Bb
return y+1.5f*kLineH+sharp;
case 11: // B
default:
return y+2.0f*kLineH;
}
}
- (float) noteYInMeasure:(int)measure withPitch:(int)pitch
{
return [self systemY:measure/fMeasPerSystem]+[self noteYWithPitch:pitch];
}
- (float) noteXInMeasure:(int)measure at:(VLFraction)at
{
const VLProperties & prop = [self song]->fProperties.front();
const float mx = fClefKeyW+(measure%fMeasPerSystem)*fMeasureW;
at /= prop.fTime / (4 * prop.fDivisions);
int div = at.fNum / at.fDenom;
return mx + (div + (div / fDivPerGroup) + 1)*kNoteW;
}
- (void) recalculateDimensions
{
NSScrollView * scroll = [self enclosingScrollView];
NSSize sz = [scroll contentSize];
sz.width /= fDisplayScale;
sz.height /= fDisplayScale;
const VLSong * song = [self song];
const VLProperties & prop = song->fProperties.front();
fGroups = prop.fTime.fNum / std::max(prop.fTime.fDenom / 4, 1);
fQuarterBeats = (prop.fTime.fNum*4) / prop.fTime.fDenom;
fDivPerGroup = prop.fDivisions * (fQuarterBeats / fGroups);
fClefKeyW = kClefX+kClefW+(std::labs(prop.fKey)+1)*kKeyW;
fMeasureW = fGroups*(fDivPerGroup+1)*kNoteW;
fMeasPerSystem = (int)std::floor((sz.width-fClefKeyW) / fMeasureW);
fNumSystems = (song->CountMeasures()+fMeasPerSystem-1)/fMeasPerSystem;
sz.height = fNumSystems*kSystemH;
NSRect r = [scroll bounds];
NSPoint mouse =
[scroll convertPoint:[[self window] mouseLocationOutsideOfEventStream]
fromView: nil];
BOOL within = [scroll mouse:mouse inRect:r];
[self removeTrackingRect:fCursorTracking];
fCursorTracking = [self addTrackingRect:r owner:self
userData:nil assumeInside:within];
[[self window] setAcceptsMouseMovedEvents:within];
[[self window] makeFirstResponder:self];
NSSize frameSz = {sz.width * fDisplayScale, sz.height * fDisplayScale};
[self setFrameSize:frameSz];
[self setBoundsSize:sz];
[self setNeedsDisplay:YES];
if (fNeedsRecalc == kFirstRecalc) {
NSView *dv = [scroll documentView];
NSView *cv = [scroll contentView];
[dv scrollPoint:
NSMakePoint(0.0, NSMaxY([dv frame])-NSHeight([cv bounds]))];
}
fNeedsRecalc = kNoRecalc;
}
- (void)drawGridForSystem:(int)system
{
static NSDictionary * sMeasNoFont = nil;
if (!sMeasNoFont)
sMeasNoFont =
[[NSDictionary alloc] initWithObjectsAndKeys:
[NSFont fontWithName: @"Helvetica" size: 10],
NSFontAttributeName,
nil];
const float kSystemY = [self systemY:system];
const float kLineW = fClefKeyW + fMeasPerSystem*fMeasureW;
const VLSong * song = [self song];
const VLProperties & prop = song->fProperties.front();
NSBezierPath * bz = [NSBezierPath bezierPath];
//
// Draw lines
//
[bz setLineWidth:0.0];
for (int line = 0; line<5; ++line) {
const float y = kSystemY+line*kLineH;
[bz moveToPoint: NSMakePoint(kLineX, y)];
[bz lineToPoint: NSMakePoint(kLineX+kLineW, y)];
}
[bz stroke];
[bz removeAllPoints];
//
// Draw measure lines
//
[bz setLineWidth:2.0];
for (int measure = 0; measure<=fMeasPerSystem; ++measure) {
const float x = fClefKeyW+measure*fMeasureW;
const float yy = kSystemY+4.0f*kLineH;
[bz moveToPoint: NSMakePoint(x, kSystemY)];
[bz lineToPoint: NSMakePoint(x, yy)];
}
[bz stroke];
[bz removeAllPoints];
//
// Draw division lines
//
[bz setLineWidth:0.0];
[[NSColor colorWithDeviceWhite:0.8f alpha:1.0f] set];
for (int measure = 0; measure<fMeasPerSystem; ++measure) {
const float mx = fClefKeyW+measure*fMeasureW;
const float y0 = kSystemY-2.0f*kLineH;
const float yy = kSystemY+6.0f*kLineH;
for (int group = 0; group < fGroups; ++group) {
for (int div = 0; div < fDivPerGroup; ++div) {
const float x = mx+(group*(fDivPerGroup+1)+div+1)*kNoteW;
[bz moveToPoint: NSMakePoint(x, y0)];
[bz lineToPoint: NSMakePoint(x, yy)];
}
}
}
[bz stroke];
//
// Draw clef
//
[[self musicElement:kMusicGClef]
compositeToPoint: NSMakePoint(kClefX, kSystemY+kClefY)
operation: NSCompositeSourceOver];
//
// Draw measure #
//
[[NSString stringWithFormat:@"%d", system*fMeasPerSystem+1]
drawAtPoint: NSMakePoint(kMeasNoX, kSystemY+kMeasNoY)
withAttributes: sMeasNoFont];
//
// Draw key (sharps & flats)
//
if (prop.fKey > 0) {
float x = kClefX+kClefW;
for (int i=0; i<prop.fKey; ++i) {
[[self musicElement:kMusicSharp]
compositeToPoint:
NSMakePoint(x, kSystemY+sSharpPos[i]+kSharpY)
operation: NSCompositeSourceOver];
x += kAccW;
}
} else if (prop.fKey < 0) {
float x = kClefX+kClefW;
for (int i=0; -i>prop.fKey; ++i) {
[[self musicElement: kMusicFlat]
compositeToPoint:
NSMakePoint(x, kSystemY+sFlatPos[i]+kFlatY)
operation: NSCompositeSourceOver];
x += kAccW;
}
}
}
- (void)drawRect:(NSRect)rect
{
if (fNeedsRecalc)
[self recalculateDimensions];
const float kLineW = fClefKeyW + fMeasPerSystem*fMeasureW;
for (int system = 0; system<fNumSystems; ++system) {
const float kSystemY = [self systemY:system];
if (!NSIntersectsRect(rect,
NSMakeRect(kLineX, kSystemY+kClefY,
kLineW, kSystemH-kClefY)
))
continue; // This system does not need to be drawn
[self drawGridForSystem:system];
[self drawNotesForSystem:system];
[self drawChordsForSystem:system];
}
VLEditable * editable = [[self document] valueForKey: @"editTarget"];
[editable highlightCursor];
}
- (IBAction) setKey:(id)sender
{
int key = [[sender selectedItem] tag];
[[self document] setKey: key transpose: YES];
fNeedsRecalc = kRecalc;
}
- (IBAction) setTime:(id)sender
{
int time = [[sender selectedItem] tag];
[[self document] setTimeNum: time >> 8 denom: time & 0xFF];
fNeedsRecalc = kRecalc;
[self setNeedsDisplay: YES];
}
- (IBAction) setDivisions:(id)sender
{
int div = [[sender selectedItem] tag];
[[self document] setDivisions: div];
fNeedsRecalc = kRecalc;
[self setNeedsDisplay: YES];
}
- (IBAction)hideFieldEditor:(id)sender
{
[fFieldEditor setAction:nil];
}
const float kSemiFloor = -2.5f*kLineH;
static int sSemiToPitch[] = {
53, // F
55, 57, // A
59, 60, // Middle C
62, 64, // E
65, 67, // G
69, 71, // B
72, 74, // D
76, 77, // F
79, 81, // A
83, 84, // C
86, 88 // E
};
- (VLRegion) findRegionForEvent:(NSEvent *) event
{
fCursorPitch = VLNote::kNoPitch;
const VLProperties & prop = [self song]->fProperties.front();
NSPoint loc = [event locationInWindow];
loc = [self convertPoint:loc fromView:nil];
if (loc.y < 0.0f || loc.y >= fNumSystems*kSystemH)
return fCursorRegion = kRegionNowhere;
int system = fNumSystems - static_cast<int>(loc.y / kSystemH) - 1;
loc.y = fmodf(loc.y, kSystemH);
loc.x -= fClefKeyW;
if (loc.x < 0.0f || loc.x >= fMeasPerSystem*fMeasureW)
return fCursorRegion = kRegionNowhere;
int measure = static_cast<int>(loc.x / fMeasureW);
loc.x -= measure*fMeasureW;
int group = static_cast<int>(loc.x / ((fDivPerGroup+1)*kNoteW));
loc.x -= group*(fDivPerGroup+1)*kNoteW;
int div = static_cast<int>(roundf(loc.x / kNoteW))-1;
div = std::min(std::max(div, 0), fDivPerGroup-1);
fCursorAt = VLFraction(div+group*fDivPerGroup, 4*prop.fDivisions);
fCursorMeasure = measure+system*fMeasPerSystem;
if (fCursorMeasure > [self song]->fMeasures.size())
return fCursorRegion = kRegionNowhere;
if (loc.y >= kSystemY+kChordY) {
//
// Chord, round to quarters
//
int scale = fCursorAt.fDenom / 4;
fCursorAt = VLFraction(fCursorAt.fNum / scale, 4);
return fCursorRegion = kRegionChord;
} else if (loc.y < kSystemY+kLyricsY) {
return fCursorRegion = kRegionLyrics;
}
loc.y -= kSystemY+kSemiFloor;
int semi = static_cast<int>(roundf(loc.y / (0.5f*kLineH)));
fCursorPitch = sSemiToPitch[semi];
return fCursorRegion = kRegionNote;
}
- (void) mouseMoved:(NSEvent *)event
{
if ([event modifierFlags] & NSAlphaShiftKeyMask)
return; // Keyboard mode, ignore mouse
bool hadCursor = fCursorPitch != VLNote::kNoPitch;
[self findRegionForEvent:event];
bool hasCursor = fCursorPitch != VLNote::kNoPitch;
[self setNeedsDisplay:(hadCursor || hasCursor)];
}
- (void) mouseEntered:(NSEvent *)event
{
[[self window] setAcceptsMouseMovedEvents:YES];
[self mouseMoved:event];
}
- (void) mouseExited:(NSEvent *)event
{
[[self window] setAcceptsMouseMovedEvents:NO];
[self mouseMoved:event];
}
- (void) mouseDown:(NSEvent *)event
{
switch ([self findRegionForEvent:event]) {
case kRegionNote:
[self addNoteAtCursor];
break;
case kRegionChord:
[self editChord];
break;
default:
break;
}
}
- (void) keyDown:(NSEvent *)event
{
NSString * k = [event charactersIgnoringModifiers];
switch ([k characterAtIndex:0]) {
case '\r':
[self startKeyboardCursor];
[self addNoteAtCursor];
break;
case ' ':
[self startKeyboardCursor];
VLSoundOut::Instance()->PlayNote(VLNote(1, fCursorPitch));
break;
case 'r':
fIsRest = !fIsRest;
break;
}
}
- (BOOL)control:(NSControl *)control textShouldEndEditing:(NSText *)fieldEditor
{
VLDocument * doc = [self document];
VLEditable * editable = [[self document] valueForKey: @"editTarget"];
return [editable validValue:[fFieldEditor stringValue]];
}
- (void)controlTextDidEndEditing:(NSNotification *)note
{
VLEditable * editable = [[self document] valueForKey: @"editTarget"];
switch ([[[note userInfo] objectForKey:@"NSTextMovement"] intValue]) {
case NSTabTextMovement:
[editable moveToNext];
break;
case NSBacktabTextMovement:
[editable moveToPrev];
break;
default:
[editable autorelease];
editable = nil;
}
[[self document] setValue:editable forKey: @"editTarget"];
if (editable)
[fFieldEditor selectText:self];
[[self window] performSelectorOnMainThread:@selector(makeFirstResponder:)
withObject:(editable ? fFieldEditor : self)
waitUntilDone:NO];
}
@end