AppKit/NSColorPanel.m

   1 /* Copyright (c) 2006-2007 Christopher J. W. Lloyd <cjwl@objc.net>
   2
   3 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
   4
   5 The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
   6
   7 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
   8
   9 #import <AppKit/AppKit.h>
  10 #import <AppKit/NSColorPickerColorList.h>
  11 #import <AppKit/NSColorPickerSliders.h>
  12 #import <AppKit/NSColorPickerWheel.h>
  13 #import <AppKit/NSRaise.h>
  14
  15 NSString * const NSColorPanelColorDidChangeNotification=@"NSColorPanelColorDidChangeNotification";
  16
  17 @interface NSColorPicker(PrivateInterface)
  18
  19 - (void)setColor:(NSColor*)color;
  20
  21 @end
  22
  23 @implementation NSColorPanel
  24
  25 static NSColorPanel *_colorPanel=nil;
  26 static NSUInteger    _pickerMask=0;
  27
  28 +(void)setColorPanel:(NSColorPanel *)colorPanel {
  29    [_colorPanel release];
  30    _colorPanel=[colorPanel retain];
  31 }
  32
  33 +(BOOL)sharedColorPanelExists {
  34    return (_colorPanel!=nil)?YES:NO;
  35 }
  36
  37 +(NSColorPanel *)sharedColorPanel {
  38    if(_colorPanel==nil){
  39     if(![NSBundle loadNibNamed:@"NSColorPanel" owner:self])
  40      NSLog(@"Cannot load NSColorPanel.nib");
  41
  42     if(![_colorPanel setFrameUsingName:@"NSColorPanel"])
  43      [_colorPanel center];
  44
  45     [_colorPanel setFrameAutosaveName:@"NSColorPanel"];
  46    }
  47
  48    return _colorPanel;
  49 }
  50
  51 +(void)setPickerMask:(NSUInteger)mask {
  52     if (_colorPanel == nil)     // only works if color panel is not yet created
  53         _pickerMask=mask;
  54 }
  55
  56 + (void)setPickerMode:(NSColorPanelMode)mode {
  57    NSUnimplementedMethod();
  58 }
  59
  60 +(BOOL)dragColor:(NSColor *)color withEvent:(NSEvent *)event fromView:(NSView *)view {
  61    NSPasteboard *pboard=[NSPasteboard pasteboardWithName:NSDragPboard];
  62    NSSize        size=NSMakeSize(12,12);
  63    NSImage      *image=[[[NSImage alloc] initWithSize:size] autorelease];
  64
  65    [image setCachedSeparately:YES];
  66    [image lockFocus];
  67    [color drawSwatchInRect:NSMakeRect(0,0,12,12)];
  68    [image unlockFocus];
  69
  70    [pboard declareTypes:[NSArray arrayWithObject:NSColorPboardType] owner:nil];
  71    [color writeToPasteboard:pboard];
  72
  73    [view dragImage:image at:NSMakePoint(0,0) offset:NSMakeSize(0,0) event:event pasteboard:pboard source:view slideBack:YES];
  74    return YES;
  75 }
  76
  77 -(void)swapInNewView:sender {
  78    NSColorPicker<NSColorPickingCustom> *chosenColorPicker=[_colorPickers objectAtIndex:[sender selectedTag]];
  79    NSView *newView;
  80
  81    newView=[chosenColorPicker provideNewView:YES];
  82
  83    if (currentColorPickerView != newView) {
  84       [[sender selectedCell] setImage:[chosenColorPicker provideNewButtonImage]];
  85
  86         if (currentColorPickerView != nil)
  87             [newView setFrame:[currentColorPickerView frame]];
  88         else
  89          [newView setFrame:[colorPickerView bounds]];
  90
  91         [currentColorPickerView retain];
  92         [currentColorPickerView removeFromSuperview];
  93
  94         [colorPickerView addSubview:newView];
  95        // [splitView adjustSubviews];
  96         currentColorPickerView=[newView retain];
  97     }
  98 }
  99
 100 -(void)awakeFromNib {
 101     // time to load the color pickers. theoretically we should be searching all the /Library/ColorPickers out there, but...
 102     NSArray *colorPickersClassArray=[NSArray arrayWithObjects:
 103                                                                         [NSColorPickerWheel class],
 104                                                                         [NSColorPickerSliders class],
 105 #if 0
 106                                      // Disabled to see if it fixes a nib instantiation issue
 107                                      [NSColorPickerColorList class],
 108 #endif
 109                                                                         nil];
 110     unsigned i,count=[colorPickersClassArray count];
 111
 112     [colorWell setBordered:NO];
 113
 114    _colorPickers=[[NSMutableArray alloc] init];
 115    [colorPickersMatrix renewRows:1 columns:count];
 116
 117    for(i=0;i<count;i++){
 118     Class          colorPickerClass=[colorPickersClassArray objectAtIndex:i];
 119     NSColorPicker *newPicker=[[[colorPickerClass alloc] initWithPickerMask:_pickerMask colorPanel:self] autorelease];
 120     NSCell        *cell=[colorPickersMatrix cellAtRow:0 column:i];
 121
 122     [_colorPickers addObject:newPicker];
 123
 124     [cell setImage:[newPicker provideNewButtonImage]];
 125     [cell setTag:i];
 126     [cell setTarget:self];
 127     [cell setAction:@selector(swapInNewView:)];
 128    }
 129
 130    [colorPickersMatrix selectCellAtRow:0 column:0];
 131    [self swapInNewView:colorPickersMatrix];
 132
 133    [opacityTitle setHidden:YES];
 134    [opacitySlider setHidden:YES];
 135    [opacityTextField setHidden:YES];
 136    [opacityPercentLabel setHidden: YES];
 137    [opacitySlider setTarget:self];
 138    [opacitySlider setAction:@selector(_alphaChanged:)];
 139    [opacityTextField setTarget:self];
 140    [opacityTextField setAction:@selector(_alphaChanged:)];
 141 }
 142
 143 -(NSColor *)color {
 144    return [colorWell color];
 145 }
 146
 147 -(CGFloat)alpha {
 148    return _showsAlpha?MIN(MAX(0.0,[opacitySlider floatValue]/100.0),1.0):1.0f;
 149 }
 150
 151 -(NSColorPanelMode)mode {
 152    return _mode;
 153 }
 154
 155 -(BOOL)showsAlpha {
 156    return _showsAlpha;
 157 }
 158
 159 - (BOOL)isContinuous {
 160    return _continuous;
 161 }
 162
 163 -(NSView *)accessoryView {
 164    NSUnimplementedMethod();
 165    return nil;
 166 }
 167
 168 -(void)setColorButtonClicked:sender {
 169     [NSApp sendAction:_action to:_target from:self];
 170 }
 171
 172 - (NSColorPicker*)_selectedColorPicker
 173 {
 174         int index = [colorPickersMatrix selectedTag];
 175         NSColorPicker *picker = [_colorPickers objectAtIndex: index];
 176         return picker;
 177 }
 178
 179 -(void)setColor:(NSColor *)color {
 180    [colorWell setColor:color];
 181    [self setColorButtonClicked:nil];
 182
 183         NSColorPicker *picker = [self _selectedColorPicker];
 184         if ([picker respondsToSelector: @selector(setColor:)]) {
 185                 [picker setColor: color];
 186         }
 187     float alpha = [color alphaComponent];
 188     [opacitySlider setFloatValue: alpha * 100.f];
 189     [opacityTextField setFloatValue: alpha * 100.f];
 190
 191    [[NSNotificationQueue defaultQueue] enqueueNotification:[NSNotification notificationWithName:NSColorPanelColorDidChangeNotification object:self] postingStyle:NSPostNow coalesceMask:NSNotificationCoalescingOnName forModes:nil];
 192 }
 193
 194 -(void)setMode:(NSColorPanelMode)mode {
 195    _mode=mode;
 196 }
 197
 198 -(void)setShowsAlpha:(BOOL)flag {
 199    _showsAlpha=flag;
 200    [opacityTitle setHidden:_showsAlpha?NO:YES];
 201    [opacitySlider setHidden:_showsAlpha?NO:YES];
 202    [opacityTextField setHidden:_showsAlpha?NO:YES];
 203    [opacityPercentLabel setHidden:_showsAlpha?NO:YES];
 204
 205         if (_showsAlpha) {
 206                 // Update the controls!
 207                 NSColor* color = [self color];
 208                 float alpha = [color alphaComponent];
 209                 [opacitySlider setFloatValue: alpha * 100.f];
 210                 [opacityTextField setFloatValue: alpha * 100.f];
 211         }
 212 }
 213
 214 -(void)setContinuous:(BOOL)flag {
 215    _continuous=flag;
 216 }
 217
 218 -(void)setAccessoryView:(NSView *)view {
 219    NSUnimplementedMethod();
 220 }
 221
 222 -(void)setAction:(SEL)action {
 223    _action=action;
 224 }
 225
 226 -(void)setTarget:target {
 227    _target=target;
 228 }
 229
 230 -(void)attachColorList:(NSColorList *)colorList {
 231    NSUnimplementedMethod();
 232 }
 233
 234 -(void)detachColorList:(NSColorList *)colorList {
 235    NSUnimplementedMethod();
 236 }
 237
 238 -(void)_alphaChanged:sender {
 239    CGFloat  alpha=MIN(MAX(0.0,[sender floatValue]/100.0),1.0);
 240    NSColor *color=[[self color] colorWithAlphaComponent:alpha];
 241
 242         if (sender == opacitySlider) {
 243                 [opacityTextField setFloatValue: [sender floatValue]];
 244         } else {
 245                 [opacitySlider setFloatValue: [sender floatValue]];
 246         }
 247    [self setColor:color];
 248 }
 249
 250 @end
 251