2014/10/15 下午 10:05:01

iphone Programming Glossary: cgcontextsetshadow

http://stackoverflow.com/questions/1225383/rounded-uiview-with-shadow

implementation void drawRect CGRect rect CGContextRef context UIGraphicsGetCurrentContext CGContextSaveGState context CGContextSetShadow context CGSizeMake 15.0f 20.0f 5.0f CGContextSetLineWidth context strokeWidth CGContextSetStrokeColorWithColor context self.strokeColor.CGColor..

Drop Shadow on UITextField text

http://stackoverflow.com/questions/1274168/drop-shadow-on-uitextfield-text

such as drawTextInRect which is specific to UITextField . Now set up the drawing context to draw shadows via the CGContextSetShadow functions and call super drawRect rect . Hopefully that works in case the original UITextField code clears the drawing context's..

Adding glowing effect to the circle

http://stackoverflow.com/questions/1464283/adding-glowing-effect-to-the-circle

1.0 1.0 .6 3 White shadow colour CGColorRef myColor 4 CGColorSpaceRef myColorSpace 5 CGContextSaveGState myContext 6 CGContextSetShadow myContext myShadowOffset 5 7 Your drawing code here 8 CGContextSetRGBFillColor myContext 0 1 0 1 CGContextFillRect myContext.. wd 3 75 ht 2 wd 4 ht 4 myColorSpace CGColorSpaceCreateDeviceRGB 9 myColor CGColorCreate myColorSpace myColorValues 10 CGContextSetShadowWithColor myContext myShadowOffset 5 myColor 11 Your drawing code here 12 CGContextSetRGBFillColor myContext 0 0 1 1 CGContextFillRect..

iPhone UILabel text soft shadow

http://stackoverflow.com/questions/1709131/iphone-uilabel-text-soft-shadow

Create new UIImage by adding shadow to existing UIImage

http://stackoverflow.com/questions/2936443/create-new-uiimage-by-adding-shadow-to-existing-uiimage

self.CGImage 0 colourSpace kCGImageAlphaPremultipliedLast CGColorSpaceRelease colourSpace CGContextSetShadow shadowContext CGSizeMake 0 1 1 CGContextDrawImage shadowContext CGRectMake 0 0 self.size.width self.size.height self.CGImage.. problems with your code The target image is too small. Be sure there enough place to draw the shadow. Consider using CGContextSetShadowWithColor to define both the shadow and its color. Don't forget that coordinate system is flipped so the origin is bottom.. self.CGImage 0 colourSpace kCGImageAlphaPremultipliedLast CGColorSpaceRelease colourSpace CGContextSetShadowWithColor shadowContext CGSizeMake 5 5 5 UIColor blackColor .CGColor CGContextDrawImage shadowContext CGRectMake 0 10 self.size.width..

How do I draw a shadow under a UIView?

http://stackoverflow.com/questions/805872/how-do-i-draw-a-shadow-under-a-uiview

a UIView I'm trying to draw a shadow under the bottom edge of a UIView in Cocoa Touch. I understand that I should use CGContextSetShadow to draw the shadow but the Quartz 2D programming guide is a little vague Save the graphics state. Call the function CGContextSetShadow.. to draw the shadow but the Quartz 2D programming guide is a little vague Save the graphics state. Call the function CGContextSetShadow passing the appropriate values. Perform all the drawing to which you want to apply shadows. Restore the graphics state I've.. void drawRect CGRect rect CGContextRef currentContext UIGraphicsGetCurrentContext CGContextSaveGState currentContext CGContextSetShadow currentContext CGSizeMake 15 20 5 CGContextRestoreGState currentContext super drawRect rect ..but this doesn't work for..