Clash/ClashViewController.m

   1 //
   2 //  ClashViewController.m
   3 //  Clash
   4 //
   5 //  Created by 金谷 一朗 on 11/09/06.
   6 //  Copyright (c) 2011 大阪大学. All rights reserved.
   7 //
   8
   9 #import "ClashViewController.h"
  10
  11 @implementation ClashViewController
  12
  13 #define defaultViewRatio 0.1
  14 #define defaultViewSizeX 1000.0
  15 #define defalutViewSizeY 250.0
  16 #define viewAspectRatio (defaultViewSizeX / defalutViewSizeY)
  17
  18
  19 - (CGFloat) mmToPix: (CGFloat)x {
  20         NSRect currentViewFrame = [view frame];
  21         CGFloat currentViewSizeX = currentViewFrame.size.width;
  22         CGFloat currentViewSizeY = currentViewFrame.size.height;
  23         CGFloat currentViewSizeYMultipliedByAspectRatio = currentViewSizeY * viewAspectRatio;
  24         CGFloat viewRatio;
  25         if (currentViewSizeX >= currentViewSizeYMultipliedByAspectRatio) {
  26                 viewRatio = defaultViewRatio * currentViewSizeY / defalutViewSizeY;
  27         }
  28         else {
  29                 viewRatio = defaultViewRatio * currentViewSizeX / defaultViewSizeX;
  30         }
  31         return x * viewRatio;
  32 }
  33
  34
  35 - (id)init {
  36         self = [super init];
  37         if (self) {
  38                 // Initialization code here.
  39                 backgroundLayer = [[CALayer alloc] init];
  40                 CGColorRef blackColor = CGColorCreateGenericGray(0, 1);
  41                 backgroundLayer.backgroundColor = blackColor;
  42                 CGColorRelease(blackColor);
  43                 layers = nil;
  44         }
  45         return self;
  46 }
  47
  48
  49 - (void)awakeFromNib {
  50         [view setLayer: backgroundLayer];
  51         [view setWantsLayer: YES];
  52 }
  53
  54
  55 - (IBAction)go: (id)sender {
  56         if (layers) {
  57                 for (NSString *ident in layers) {
  58                         CALayer *layer = [layers objectForKey: ident];
  59                         [layer removeFromSuperlayer];
  60                         layer = nil;
  61                 }
  62                 layers = nil;
  63         }
  64         layers = [NSMutableDictionary dictionaryWithCapacity: 100];
  65
  66         // Verify given URL.
  67         NSString *address = [addressField stringValue];
  68         if ([address isEqualToString: @""]) {
  69                 address = @"http://localhost:8080/?time=now";
  70         }
  71         NSURL *url = [NSURL URLWithString: address];
  72
  73         // Download XML.
  74         NSError *error;
  75         NSXMLDocument *xmlDocument = [[NSXMLDocument alloc] initWithContentsOfURL: url
  76                                                                                                                                                                                                                                                                                 options: 0
  77                                                                                                                                                                                                                                                                                         error: &error];
  78         if (error) {
  79                 NSLog(@"Error -> %@", [error localizedDescription]);
  80         }
  81
  82         // Parse XML.
  83         NSXMLElement *rootElement = [xmlDocument rootElement];
  84         NSArray *frameElements = [rootElement elementsForName: @"frame"];
  85         NSXMLElement *frameElement = [frameElements objectAtIndex: 0];
  86         NSArray *imageElements = [frameElement elementsForName: @"image"];
  87         for (NSXMLElement *imageElement in imageElements) {
  88                 // NSString *text = [imageElement stringValue];
  89                 NSXMLNode *source = [imageElement attributeForName: @"source"];  // source must be a valid URL
  90                 NSXMLNode *ident = [imageElement attributeForName: @"id"];
  91                 NSXMLNode *position_x = [imageElement attributeForName: @"position_x"];
  92                 NSXMLNode *position_y = [imageElement attributeForName: @"position_y"];
  93                 NSXMLNode *size_x = [imageElement attributeForName: @"size_x"];
  94                 NSXMLNode *size_y = [imageElement attributeForName: @"size_y"];
  95                 NSXMLNode *alpha = [imageElement attributeForName: @"alpha"];
  96                 // Download the image
  97                 NSURL *bitmapImageURL = [NSURL URLWithString: [source stringValue]];
  98                 NSBitmapImageRep *bitmapImage
  99                         = [NSBitmapImageRep imageRepWithContentsOfURL: bitmapImageURL];
 100                 CGFloat positionX = [self mmToPix: [[position_x stringValue] floatValue]];
 101                 CGFloat positionY = [self mmToPix: [[position_y stringValue] floatValue]];
 102                 CGFloat sizeX = [self mmToPix: [[size_x stringValue] floatValue]];
 103                 CGFloat sizeY = [self mmToPix: [[size_y stringValue] floatValue]];
 104                 CGFloat alphaValue = [[alpha stringValue] floatValue];
 105                 if (bitmapImage) {
 106                         // Create a layer and set the image to the layer
 107                         CGImageRef image = [bitmapImage CGImage];
 108                         CALayer *layerToAdd = [CALayer layer];
 109                         layerToAdd.contents = (id)image;
 110                         layerToAdd.frame = CGRectMake(positionX, positionY, sizeX, sizeY);
 111                         layerToAdd.opacity = alphaValue;
 112                         // must set up geometry and transformation and color etc.
 113                         // Insert the layer to the view
 114                         layerToAdd.hidden = NO;
 115                         [backgroundLayer addSublayer: layerToAdd];
 116                         // Register to the layer dictionary
 117                         NSString *idString = [ident stringValue];
 118                         [layers setObject: layerToAdd forKey: idString];
 119                 }
 120         }
 121 }
 122
 123
 124 - (IBAction)autoRun:(id)sender {
 125         if ([autoRunMode state] == NSOnState) {
 126                 if (timer) {
 127                         timer = nil;
 128                 }
 129                 timer = [NSTimer scheduledTimerWithTimeInterval: 1.0 / 6.0
 130                                                                                                                                                                                  target: self
 131                                                                                                                                                                          selector: @selector(fire:)
 132                                                                                                                                                                          userInfo: nil
 133                                                                                                                                                                                 repeats: YES];
 134         }
 135         else {
 136                 if (timer) {
 137                         [timer invalidate];
 138                         timer = nil;
 139                 }
 140         }
 141 }
 142
 143 - (void)fire: (id)userInfo {
 144         [self go: self];
 145 }
 146
 147 @end