quartz-graphics

I want more than one font color in the same UILabel. I dont know if it is possible. I dont really think so but maybe some of you out there have a smart solution for it? Maybe something like stringWithFormat . [NSString stringWithFormatAndColor: @"Text with color: %@ %@", text, color, text, color] This image illustrate what I'm trying to accomplish: You can achieve this with NSAttributedSting. An easy to use drop-in replacement for UILabels with support for attributed strings is TTTAtributedLabel or OHAttributedLabel In my experience it is easier to work with NSMutableAttributedStrings and

I'm trying to take an image that I have in a image object and render into a Core Graphics PDF context-- happens to be on an iPhone but this question surely applies equally to desktop Quartz. This UIImage is a simple color-on-white image at about 600x800 resolution. If I (say) turn it into a PNG file, that file looks exactly as expected-- so the data is OK. Here's what I'm doing to generate the PDF: NSMutableData * outputData = [[NSMutableData alloc] init]; CGDataConsumerRef dataConsumer = CGDataConsumerCreateWithCFData((CFMutableDataRef)outputData); CFMutableDictionaryRef attrDictionary = NULL

I am at my wits end trying to come up with a design pattern for this paradigm. I haven't had much luck on this site but at this stage I'll try anything. I am trying to implement a radar type animation and hence I am rotating a view 360 degrees to represent the radius rotating around the circle. I have placed points around this circle and am able to calculate the angle from the center of the circle using standard trig. As the radius sweeps around the circle, if it intersects with a point (eg angle of the point equals the angle of the sweeping radius + a tolerance) the point flashes on. Now, I

I have a small run speed problem. On load, I generate a CGMutablePath containing at least 1000 points. I want to scroll this path on the screen, so I use this kind of code : -(void) drawRect:(CGRect)rect { /* Here, I have a timer calling drawRect 60 times per second. There's also code for the scale and currentTime, based on an MP3 playback (AVAudioPlayer); */ CGContextRef ref = UIGraphicsGetCurrentContext(); CGContextClearRect(ref, [self frame]); CGContextSaveGState(ref); CGContextTranslateCTM(ref, s.width/2+currentTime, 1); CGContextScaleCTM(ref, scale, 1); CGContextAddPath(ref, myGraphPath);