UIColor RGBA

C4WorkSpace.m

//
//  C4Workspace.h
//  Examples
//
//  Created by Travis Kirton
//

#import "C4Workspace.h"

@interface C4WorkSpace ()
-(void)setupShapes;
-(void)setupLabels;
@end

@implementation C4WorkSpace {
    C4Shape *red, *green, *blue;
}

-(void)setup {
    [self setupShapes];
    [self setupLabels];
    
    red.fillColor  = [UIColor colorWithRed:1.0f green:0.0f blue:0.0f alpha:1.0f];
    green.fillColor = [UIColor colorWithRed:0.0f green:1.0f blue:0.0f alpha:1.0f];
    blue.fillColor = [UIColor colorWithRed:0.0f green:0.0f blue:1.0f alpha:1.0f];
}

-(void)setupShapes {
    CGRect frame = CGRectMake(0, 0, self.canvas.width*0.9f, self.canvas.height/5.0f);
    red =  [C4Shape rect:frame];
    green = [C4Shape rect:frame];
    blue = [C4Shape rect:frame];
    
    red.lineWidth = green.lineWidth = blue.lineWidth = 0.0f;
    
    red.center  = CGPointMake(self.canvas.center.x, self.canvas.height/4);
    green.center = CGPointMake(self.canvas.center.x, self.canvas.height*2/4);
    blue.center = CGPointMake(self.canvas.center.x, self.canvas.height*3/4);
    
    [self.canvas addShape:red];
    [self.canvas addShape:green];
    [self.canvas addShape:blue];
}

-(void)setupLabels {
    C4Font *f = [C4Font fontWithName:@"ArialRoundedMTBold" size:30.0f];
    C4Label *l;
    
    l = [C4Label labelWithText:@"{RGBA} : {1.0,0,0,1.0}" font:f];
    l.textColor = [UIColor whiteColor];
    l.center = red.center;
    [self.canvas addLabel:l];
    
    l = [C4Label labelWithText:@"{RGBA} : {0,1.0,0,1.0}" font:f];
    l.textColor = [UIColor whiteColor];
    l.center = green.center;
    [self.canvas addLabel:l];
    
    l = [C4Label labelWithText:@"{RGBA} : {0,0,1.0,1.0}" font:f];
    l.textColor = [UIColor whiteColor];
    l.center = blue.center;
    [self.canvas addLabel:l];
}
@end