Taps & Touches Tutorial

C4WorkSpace.m

//
//  C4WorkSpace.m
//  Taps & Touches Tutorial
//
//  Created by Travis Kirton.
//

#import "C4WorkSpace.h"

@implementation C4WorkSpace {
    C4Label *tapsAndTouches;
    C4Timer *resetTimer;
}

-(void)setup {
    [self createLabel];
    
    NSInteger tapCount = 5;
    NSInteger touchCount = 5;
    for(int i = 1; i < tapCount + 1; i++) {
        for(int j = 1; j < touchCount + 1; j++) {
            NSString *tapName = [@"tap" stringByAppendingFormat:@"%d_%d",i,j];
            [self addGesture:TAP name:tapName action:@"tap:"];
            [self numberOfTapsRequired:i forGesture:tapName];
            [self numberOfTouchesRequired:j forGesture:tapName];
        }
    }
    
    NSDictionary *allGestures = [self allGestures];
    NSArray *gestNames = [allGestures allKeys];
    gestNames = [gestNames sortedArrayUsingFunction:strSort context:NULL];
    for(int i = 0; i < [gestNames count]; i++) {
        UIGestureRecognizer *g = [self gestureForName:gestNames[i]];
        for(int j = i+1; j < [gestNames count]; j++) {
            [g requireGestureRecognizerToFail:[self gestureForName:gestNames[j]]];
        }
    }

    self.canvas.multipleTouchEnabled = YES;
}

-(void)createLabel {
    C4Font *font = [C4Font fontWithName:@"AvenirNextCondensed-Heavy" size:96];
    tapsAndTouches = [C4Label labelWithText:@"TAPS\n&\nTOUCHES" font:font];
    tapsAndTouches.numberOfLines = 3;
    [tapsAndTouches sizeToFit];
    tapsAndTouches.textAlignment = ALIGNTEXTCENTER;
    tapsAndTouches.center = self.canvas.center;
    tapsAndTouches.userInteractionEnabled = NO;
    [self.canvas addLabel:tapsAndTouches];
}

-(void)tap:(UITapGestureRecognizer *)tapGesture {
    NSString *tapString;
    switch (tapGesture.numberOfTapsRequired) {
        case 1:
            tapString = @"SINGLE TAP";
            break;
        case 2:
            tapString = @"DOUBLE TAP";
            break;
        case 3:
            tapString = @"TRIPLE TAP";
            break;
        default:
            tapString = [NSString stringWithFormat:@"%d TAPS",tapGesture.numberOfTapsRequired];
            break;
    }
    
    NSString *touchString;
    switch (tapGesture.numberOfTouches) {
        case 1:
            touchString = @"1 TOUCH";
            break;
        default:
            touchString = [NSString stringWithFormat:@"%d TOUCHES",tapGesture.numberOfTouches];
            break;
    }
    [self updateLabelTaps:tapString touches:touchString];
}

-(void)updateLabelTaps:(NSString *)tapString touches:(NSString *)touchString {
    tapsAndTouches.text = [NSString stringWithFormat:@"%@\n&\n%@",tapString,touchString];
    [tapsAndTouches sizeToFit];
    tapsAndTouches.width = self.canvas.width;
    tapsAndTouches.center = self.canvas.center;
    
    [resetTimer invalidate];
    resetTimer = [C4Timer automaticTimerWithInterval:2.0f target:self method:@"resetLabel" repeats:NO];
}

-(void)resetLabel {
    tapsAndTouches.text = @"TAPS\n&\nTOUCHES";
    [tapsAndTouches sizeToFit];
    tapsAndTouches.width = self.canvas.width;
    tapsAndTouches.center = self.canvas.center;
}

@end