2014/10/15 下午 10:05:02

iphone Programming Glossary: cgcontextsetshadowwithcolor

http://stackoverflow.com/questions/10084606/how-to-highlight-a-uibutton-subclass

UIBezierPath bezierPathWithRoundedRect CGRectMake 35 5 250 50 cornerRadius 6 CGContextSaveGState context CGContextSetShadowWithColor context shadow2Offset shadow2BlurRadius shadow2 CGContextSetFillColorWithColor context shadow2 roundedRectanglePath fill.. CGFloat xOffset shadowOffset.width round roundedRectangleBorderRect.size.width CGFloat yOffset shadowOffset.height CGContextSetShadowWithColor context CGSizeMake xOffset copysign 0.1 xOffset yOffset copysign 0.1 yOffset shadowBlurRadius shadow roundedRectanglePath..

Is there an easy way or library available to let text glow?

http://stackoverflow.com/questions/1229721/is-there-an-easy-way-or-library-available-to-let-text-glow

drawRect for a UIView or renderInContext for a CALayer the following code will draw text and apply a glow around it CGContextSetShadowWithColor context CGSizeMake 0.0 0.0 20.0f glowColor text drawAtPoint CGPointMake 0.5f 0.5f withFont UIFont fontWithName @ Helvetica..

3d text effect in iOS

http://stackoverflow.com/questions/13766268/3d-text-effect-in-ios

size.width int size.height 8 int 4 size.width colorSpace kCGImageAlphaPremultipliedLast Draw with shadow CGContextSetShadowWithColor ctx CGSizeMake 0 0 10.0 UIColor colorWithWhite 0.0 alpha 0.6 .CGColor CGContextSetRGBStrokeColor ctx 1.0 1.0 1.0 0.6 CGContextSetAllowsAntialiasing.. fontSize fontSizeDelta kCGEncodingMacRoman CGContextShowTextAtPoint ctx 0.0 3.0 fontOffset text UTF8String text.length CGContextSetShadowWithColor ctx CGSizeZero 0.0 NULL disable shadow CGContextSetCharacterSpacing ctx 1.0 CGContextSelectFont ctx fontName UTF8String..

Adding glowing effect to the circle

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

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..

I am trying to add a drop shadow to a UImageView

http://stackoverflow.com/questions/1943087/i-am-trying-to-add-a-drop-shadow-to-a-uimageview

myContext 6 myColorSpace CGColorSpaceCreateDeviceRGB 9 myColor CGColorCreate myColorSpace myColorValues 10 CGContextSetShadowWithColor myContext myShadowOffset spread myColor 11 Your drawing code here 12 CGContextDrawImage myContext rotatingView.frame imgRef..

how to change UITabbar selected color?

http://stackoverflow.com/questions/2506290/how-to-change-uitabbar-selected-color

2 UIGraphicsBeginImageContext contextRect.size CGContextRef c UIGraphicsGetCurrentContext Setup shadow CGContextSetShadowWithColor c shadowOffset shadowBlur cgShadowColor Setup transparency layer and clip to mask CGContextBeginTransparencyLayer c NULL..

How do I use the NSString draw functionality to create a UIImage from text

http://stackoverflow.com/questions/2765537/how-do-i-use-the-nsstring-draw-functionality-to-create-a-uiimage-from-text

to avoid clipping the shadow you should make the context size bigger CGContextRef ctx UIGraphicsGetCurrentContext CGContextSetShadowWithColor ctx CGSizeMake 1.0 1.0 5.0 UIColor grayColor CGColor draw in context you can use also drawInRect withFont text drawAtPoint..

Create new UIImage by adding shadow to existing UIImage

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

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 left not.. self.CGImage 0 colourSpace kCGImageAlphaPremultipliedLast CGColorSpaceRelease colourSpace CGContextSetShadowWithColor shadowContext CGSizeMake 5 5 5 UIColor blackColor .CGColor CGContextDrawImage shadowContext CGRectMake 0 10 self.size.width..

Inner Shadow in UILabel

http://stackoverflow.com/questions/3231690/inner-shadow-in-uilabel

createMaskWithSize rect.size shape ^ UIColor whiteColor setFill CGContextFillRect UIGraphicsGetCurrentContext rect CGContextSetShadowWithColor UIGraphicsGetCurrentContext CGSizeMake 0 1 1.0f UIColor colorWithWhite 0.0 alpha 0.5 CGColor cutout drawAtPoint CGPointZero..

Inner shadow effect on UIView layer?

http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer

properties on the context aColor UIColor colorWithRed 0.0f green 0.0f blue 0.0f alpha 0.5f CGContextSaveGState context CGContextSetShadowWithColor context CGSizeMake 0.0f 1.0f 3.0f aColor CGColor Now fill the rectangle so the shadow gets drawn aColor setFill CGContextSaveGState..

How to fill a shape defined with CGPoints with gradient in iOS?

http://stackoverflow.com/questions/7175886/how-to-fill-a-shape-defined-with-cgpoints-with-gradient-in-ios

for drawing CGSize textSize _titleLabel text sizeWithFont _titleLabel font Set shadow CGContextSaveGState context CGContextSetShadowWithColor context CGSizeMake 0 2 3.0 shadowColor Set arrow shape CGPoint rectangle_points CGPointMake _coloredBoxRect.origin.x _coloredBoxRect.origin.y..

iOS - How to achieve emboss effect for the text on UILabel?

http://stackoverflow.com/questions/8467141/ios-how-to-achieve-emboss-effect-for-the-text-on-uilabel

with mask let ARC free it Draw the red text. textColor setFill CGContextFillRect gc rect Draw the interior shadow. CGContextSetShadowWithColor gc CGSizeZero 1.6 UIColor colorWithWhite .3 alpha 1 .CGColor invertedMask drawAtPoint CGPointZero invertedMask nil done.. UIImage imageWithUpwardShadowAndImage UIImage image UIGraphicsBeginImageContextWithOptions image.size NO image.scale CGContextSetShadowWithColor UIGraphicsGetCurrentContext CGSizeMake 0 1 1 UIColor colorWithWhite 0 alpha .15 .CGColor image drawAtPoint CGPointZero UIImage..

Draw glow around inside edge of multiple CGPaths

http://stackoverflow.com/questions/8480401/draw-glow-around-inside-edge-of-multiple-cgpaths

the clip and shadow attributes after drawing. CGContextSaveGState gc CGContextClipToMask gc bounds mask.CGImage CGContextSetShadowWithColor gc offset blur color.CGColor invertedImage drawInRect bounds CGContextRestoreGState gc To test it I created an image using..

UIImage Shadow Trouble

http://stackoverflow.com/questions/962827/uiimage-shadow-trouble

CGContextDrawImage ... CGFloat components 4 0.0 0.0 0.0 1.0 CGColorRef shadowColor CGColorCreate colorSpace components CGContextSetShadowWithColor imageContext CGSizeMake 3 3 2 shadowColor CGColorRelease shadowColor After the call to CGContextSetShadowWithColor ....... CGContextSetShadowWithColor imageContext CGSizeMake 3 3 2 shadowColor CGColorRelease shadowColor After the call to CGContextSetShadowWithColor ..... everything should draw with a shadow that is offset by 3 3 points and drawn with a 2.0 point blur radius. You'll probably..

How to mask an image in IOS sdk?

http://stackoverflow.com/questions/9872975/how-to-mask-an-image-in-ios-sdk

to avoid clipping the shadow you should make the context size bigger CGContextRef ctx UIGraphicsGetCurrentContext CGContextSetShadowWithColor ctx CGSizeMake 0.0 1.0 5.0 UIColor blackColor CGColor CGContextSetBlendMode ctx kCGBlendModeNormal CGContextSetFillColorWithColor..