git.sesse.net Git - vlc/blob - projects/macosx/vlc_app/Sources/VLCMediaLayer.m

   1 //
   2 //  VLCMediaLayer.m
   3 //  VLC
   4 //
   5 //  Created by Pierre d'Herbemont on 1/14/08.
   6 //  Copyright 2008 __MyCompanyName__. All rights reserved.
   7 //
   8
   9 #import "VLCMediaLayer.h"
  10
  11 /*****************************************************************************
  12  * Some configuration first. Defines the size of the artwork layer.
  13  */
  14 static CGSize kArtworkSize = { 256., 256. };
  15
  16 /*****************************************************************************
  17  * @interface VLCMediaLayer (Private)
  18  */
  19
  20 @interface VLCMediaLayer (Private)
  21 - (void)updateSublayers;
  22 @end
  23
  24 /*****************************************************************************
  25  * @interface VLCMediaLayer ()
  26  */
  27 @interface VLCMediaLayer ()
  28 @property (retain,readwrite) VLCMedia * media;
  29 @property (retain,readwrite) CATextLayer * titleLayer;
  30 @property (retain,readwrite) CATextLayer * artistLayer;
  31 @property (retain,readwrite) CATextLayer * genreLayer;
  32 @property (retain,readwrite) CALayer * artworkLayer;
  33 @end
  34
  35 /*****************************************************************************
  36  * @implementation VLCMediaLayer
  37  */
  38 @implementation VLCMediaLayer
  39 @synthesize displayFullInformation;
  40 @synthesize media;
  41 @synthesize titleLayer;
  42 @synthesize genreLayer;
  43 @synthesize artistLayer;
  44 @synthesize artworkLayer;
  45
  46 + (id)layer
  47 {
  48     return [self layerWithMedia:[VLCMedia mediaAsNodeWithName:@"Empty Media"]];
  49 }
  50 + (id)layerWithMedia:(VLCMedia *)aMedia
  51 {
  52     VLCMediaLayer * me = [super layer];
  53
  54     if(!me) return nil;
  55
  56     me.media = aMedia;
  57     me.displayFullInformation = YES;
  58
  59     /* Set the default layout */
  60     me.titleLayer = [CATextLayer layer];
  61     me.artistLayer = [CATextLayer layer];
  62     me.genreLayer = [CATextLayer layer];
  63     CALayer * textLayer = [CALayer layer];
  64     NSDictionary * textStyle = [NSDictionary dictionaryWithObjectsAndKeys:
  65                                         [NSNumber numberWithInteger:12], @"cornerRadius",
  66                                         [NSValue valueWithSize:NSMakeSize(5, 0)], @"margin",
  67                                         @"Lucida-Bold", @"font",
  68                                         CGColorCreateGenericGray(0.5, 1.),@"foregroundColor",
  69                                         [NSNumber numberWithInteger:18], @"fontSize",
  70                                         [NSNumber numberWithFloat: .8], @"shadowOpacity",
  71                                         [NSNumber numberWithFloat: 1.], @"shadowRadius",
  72                                         kCAAlignmentLeft, @"alignmentMode",
  73                                         nil];
  74     NSDictionary * textTitleStyle = [NSDictionary dictionaryWithObjectsAndKeys:
  75                                         [NSNumber numberWithInteger:12], @"cornerRadius",
  76                                         [NSValue valueWithSize:NSMakeSize(5, 0)], @"margin",
  77                                         @"Lucida", @"font",
  78                                         [NSNumber numberWithInteger:26], @"fontSize",
  79                                         [NSNumber numberWithFloat: .7], @"shadowOpacity",
  80                                         [NSNumber numberWithFloat: 3.], @"shadowRadius",
  81                                         kCAAlignmentLeft, @"alignmentMode",
  82                                         nil];
  83     /* First off, text */
  84         me.titleLayer.style = textTitleStyle;
  85     me.titleLayer.string = @"Title";
  86     me.titleLayer.name = @"title";
  87         [me.titleLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMinX relativeTo:@"superlayer" attribute:kCAConstraintMinX offset:0.]];
  88         [me.titleLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMaxX relativeTo:@"superlayer" attribute:kCAConstraintMaxX offset:0.]];
  89         [me.titleLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMinY relativeTo:@"artist" attribute:kCAConstraintMaxY offset:10.]];
  90         me.artistLayer.style = textStyle;
  91     me.artistLayer.string = @"Artist";
  92     me.artistLayer.name = @"artist";
  93         [me.artistLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMinX relativeTo:@"title" attribute:kCAConstraintMinX]];
  94         [me.artistLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMaxX relativeTo:@"title" attribute:kCAConstraintMaxX]];
  95         [me.artistLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMidY relativeTo:@"superlayer" attribute:kCAConstraintMidY]];
  96         me.genreLayer.style = textStyle;
  97     me.genreLayer.string = @"Genre";
  98     me.genreLayer.name = @"genre";
  99         [me.genreLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMinX relativeTo:@"title" attribute:kCAConstraintMinX]];
 100         [me.genreLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMaxX relativeTo:@"title" attribute:kCAConstraintMaxX]];
 101         [me.genreLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMaxY relativeTo:@"artist" attribute:kCAConstraintMinY offset:-10.]];
 102
 103
 104     [textLayer addSublayer:me.titleLayer];
 105     [textLayer addSublayer:me.artistLayer];
 106     [textLayer addSublayer:me.genreLayer];
 107     textLayer.contentsGravity = kCAGravityCenter;
 108     textLayer.layoutManager = [CAConstraintLayoutManager layoutManager];
 109
 110     /* Empty layer for picture */
 111     me.artworkLayer = [CALayer layer];
 112     me.artworkLayer.backgroundColor = CGColorCreateGenericGray(0.5, 0.4);
 113     me.artworkLayer.borderColor = CGColorCreateGenericRGB(1., 1., 1., .8);
 114     me.artworkLayer.borderWidth = 3.0;
 115
 116    // me.artworkLayer.frame = CGRectMake(0.,0., kArtworkSize.width, kArtworkSize.height);
 117     textLayer.frame = CGRectMake(0.,0., kArtworkSize.width, kArtworkSize.height);
 118
 119     /* Position the text and the artwork layer */
 120     CALayer * container = [CALayer layer];
 121     me.artworkLayer.name = @"artworkLayer";
 122     textLayer.name = @"textLayer";
 123     container.name = @"artContainer";
 124     container.layoutManager = [CAConstraintLayoutManager layoutManager];
 125
 126     [container addSublayer:me.artworkLayer];
 127         [container addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMinX relativeTo:@"superlayer" attribute:kCAConstraintMinX offset:60.]];
 128         [container addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMidY relativeTo:@"superlayer" attribute:kCAConstraintMidY]];
 129         [container addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintHeight relativeTo:@"superlayer" attribute:kCAConstraintHeight scale:.6 offset:0.]];
 130         [container addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMaxX relativeTo:@"superlayer" attribute:kCAConstraintMidX]];
 131
 132         [me.artworkLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMinX relativeTo:@"superlayer" attribute:kCAConstraintMinX]];
 133         [me.artworkLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMinY relativeTo:@"superlayer" attribute:kCAConstraintMinY]];
 134         [me.artworkLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMaxY relativeTo:@"superlayer" attribute:kCAConstraintMaxY]];
 135         [me.artworkLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMaxX relativeTo:@"superlayer" attribute:kCAConstraintMaxX]];
 136
 137         [textLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMinX relativeTo:@"artContainer" attribute:kCAConstraintMaxX]];
 138         [textLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMaxX relativeTo:@"superlayer" attribute:kCAConstraintMaxX ]];
 139         [textLayer addConstraint:[CAConstraint constraintWithAttribute:kCAConstraintMidY relativeTo:@"artContainer" attribute:kCAConstraintMidY]];
 140
 141     me.artworkLayer.zPosition = -30.f;
 142
 143     me.artworkLayer.shadowOpacity = .3;
 144     me.artworkLayer.shadowRadius = 10.;
 145     static CATransform3D rot, projection;
 146     static BOOL transformInited = NO;
 147     if( !transformInited )
 148     {
 149         rot = CATransform3DMakeRotation(.1
 150         , 0., 1., 0.);
 151             projection = CATransform3DIdentity;
 152         projection.m34 = 1. / -80.;
 153         transformInited = YES;
 154     }
 155     me.artworkLayer.transform = rot;
 156     container.sublayerTransform = projection;
 157
 158     me.layoutManager = [CAConstraintLayoutManager layoutManager];
 159     [me addSublayer:textLayer];
 160     [me addSublayer:container];
 161
 162     [me updateSublayers];
 163
 164     /* The following will trigger -observeValueForKeyPath: ofObject: change: context: */
 165     [me.media addObserver:me forKeyPath:@"metaDictionary.title" options:NSKeyValueObservingOptionNew context:nil];
 166     [me.media addObserver:me forKeyPath:@"metaDictionary.genre" options:NSKeyValueObservingOptionNew context:nil];
 167     [me.media addObserver:me forKeyPath:@"metaDictionary.artist" options:NSKeyValueObservingOptionNew context:nil];
 168     [me.media addObserver:me forKeyPath:@"metaDictionary.artwork" options:NSKeyValueObservingOptionNew context:nil];
 169
 170     return me;
 171 }
 172
 173 - (void)dealloc
 174 {
 175     /* Previously registered in +layerWithMediaArrayController: +layerWithMedia:*/
 176     [self.media removeObserver:self forKeyPath:@"metaDictionary.title"];
 177     [self.media removeObserver:self forKeyPath:@"metaDictionary.genre"];
 178     [self.media removeObserver:self forKeyPath:@"metaDictionary.artist"];
 179     [self.media removeObserver:self forKeyPath:@"metaDictionary.artwork"];
 180
 181     [super dealloc];
 182 }
 183 @end
 184
 185 /*****************************************************************************
 186  * @implementation VLCMediaLayer (Private)
 187  */
 188 @implementation VLCMediaLayer (Private)
 189
 190 - (void)updateSublayers
 191 {
 192     [CATransaction begin];
 193     self.titleLayer.string = [self.media.metaDictionary objectForKey:@"title"];
 194     NSString * artist = [self.media.metaDictionary objectForKey:@"artist"];
 195     self.artistLayer.string = artist ? artist : @"No Artist";
 196     NSString * genre = [self.media.metaDictionary objectForKey:@"genre"];
 197     self.genreLayer.string = genre ? genre : @"No Genre";
 198     if( [self.media valueForKeyPath:@"metaDictionary.artwork"] )
 199     {
 200         self.artworkLayer.contents = (id)[[self.media valueForKeyPath:@"metaDictionary.artwork"] CGImage];
 201         self.artworkLayer.contentsGravity = kCAGravityResizeAspect;
 202         self.artworkLayer.borderWidth = 0.;
 203         self.artworkLayer.backgroundColor = nil;
 204     }
 205     [CATransaction commit];
 206 }
 207
 208 - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
 209 {
 210     if( [keyPath hasPrefix:@"metaDictionary"] )
 211     {
 212         [self updateSublayers];
 213         return;
 214     }
 215     [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
 216 }
 217 @end