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2014/10/15 ¤U¤È 10:07:39
iphone Programming Glossary: drawnDrawing rotated text with NSString drawInRect http://stackoverflow.com/questions/10289898/drawing-rotated-text-with-nsstring-drawinrect font lineBreakMode UILineBreakModeWordWrap alignment UIBaselineAdjustmentNone So when I use this I see text being drawn 45 degrees below the x axis. I want to draw the text vertically along my lineargradient. So I thought I could do that by..
Any quick and dirty anti-aliasing techniques for a rotated UIImageView? http://stackoverflow.com/questions/1136110/any-quick-and-dirty-anti-aliasing-techniques-for-a-rotated-uiimageview with a CGAffineTransform. The UIImage of the UIImageView fills the entire frame. When the image is rotated and drawn the edges appear noticeably jagged. Is there anything I can do to make it look better It's clearly not being anti aliased..
How do I add a gradient to the text of a UILabel, but not the background? http://stackoverflow.com/questions/1266179/how-do-i-add-a-gradient-to-the-text-of-a-uilabel-but-not-the-background the iPhone inverts the normal Quartz coordinate system on for the Y axis sets the text drawing mode to intersect the drawn text with the clipping path clips the area to draw to the text and then draws a gradient. The gradient will only fill the..
Pixel Width of the text in a UILabel http://stackoverflow.com/questions/1340667/pixel-width-of-the-text-in-a-uilabel can be shorter. Is there a way to determine the length of the text in pixels such that the line can appropriately be drawn I'm also open to any other solutions if known Best Erik iphone objective c uilabel share improve this question NSString..
Using insert rows in a UITableView http://stackoverflow.com/questions/1470898/using-insert-rows-in-a-uitableview I need to reload the data when the user starts editing I am doing this because otherwise the insertion rows are never drawn. Thanks. void setEditing BOOL editing animated BOOL animated super setEditing editing animated animated self.tableView setEditing..
How to customize the callout bubble for MKAnnotationView? http://stackoverflow.com/questions/1565828/how-to-customize-the-callout-bubble-for-mkannotationview These methods are NOT called if I have this set to NO which is what I want so that the default callout bubble is not drawn . So I have no way of knowing if the user touched on my point on the map selected it or touched a point that is not part..
How to change an UILabel/UIFont's letter spacing? http://stackoverflow.com/questions/2544905/how-to-change-an-uilabel-uifonts-letter-spacing 0 54 result strlen result But I need to align this to the right. I could do that manually if I knew the width of the drawn text but it's proving near impossible to find that. I've read about ATSU but I couldn't find any examples. This sucks iphone..
http://stackoverflow.com/questions/262156/uiimage-rounded-corners targetHeight is the size of the space we're drawing into. The scaledHeight is the height that the image actually is drawn at once we take into account the ideal of maintaining proportions float scaleFactor 0.0 float scaledWidth targetSize.width..
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 I would go about doing this. I need to call a method that I give it an NSString and returns a UIImage with the text drawn into it. Please help iphone nsstring uiimage share improve this question You can try this updated for iOS 4 UIImage..
Drawing formulas with Quartz 2d http://stackoverflow.com/questions/2907045/drawing-formulas-with-quartz-2d of the operations within an equation I used Quartz to draw lines symbols etc. but most of the drawing was simply text drawn within a CALayer using the NSString text drawing extensions. I did override the standard CALayer rendering architecture..
http://stackoverflow.com/questions/3841642/curve-text-on-existing-circle text on existing circle For an application I am building I have drawn 2 circles. One a bit bigger than the other. I want to curve text between those lines for a circular menu I am building...
Inner shadow effect on UIView layer? http://stackoverflow.com/questions/4431292/inner-shadow-effect-on-uiview-layer CGContextSetShadowWithColor context CGSizeMake 0.0f 1.0f 3.0f aColor CGColor Now fill the rectangle so the shadow gets drawn aColor setFill CGContextSaveGState context CGContextAddPath context path CGContextEOFillPath context Release the paths CGPathRelease..
How do I reset after a UIScrollView zoom? http://stackoverflow.com/questions/448285/how-do-i-reset-after-a-uiscrollview-zoom do I reset after a UIScrollView zoom I have a Graph being drawn inside a UIScrollView. It's one large UIView using a custom subclass of CATiledLayer as its layer. When I zoom in and out.. operation it sets the transform of the content view to whatever the overall scale factor is. Since you've manually redrawn your view at the last scale factor it compounds the scaling which is what you're seeing. As a workaround I use a UIView.. By doing this the transforms sent to the content view are adjusted based on the scale at which the view was last redrawn. When the pinch zooming is done the transform is reset to a scale of 1.0 by bypassing the adjustment in the normal setTransform..
Rendering to non-power-of-two texture on iPhone http://stackoverflow.com/questions/4760174/rendering-to-non-power-of-two-texture-on-iphone for that texture unit. You can use the following code to determine if this extension is supported on your device drawn from Philip Rideout's excellent iPhone 3D Programming book const char extensions char glGetString GL_EXTENSIONS bool npot..
Building with LLVM and any optimization causes app to crash on startup http://stackoverflow.com/questions/5490432/building-with-llvm-and-any-optimization-causes-app-to-crash-on-startup The device console shows some NSLog statements that our app makes at startup then the first screen's UI is loaded and drawn and after that the crash happens. Building with no optimizations or building with GCC 4.2 with any optimization level works..
iOS: Movement Precision in 3D Space http://stackoverflow.com/questions/5550453/ios-movement-precision-in-3d-space the user holds the phone flat so that the bottom of the phone runs parallel with the floor . There is something drawn on screen which doesn't move with the screen as the person walks forward backward and side to side. Thus the object appears..
How to draw a transparent stroke (or anyway clear part of an image) on the iPhone http://stackoverflow.com/questions/629409/how-to-draw-a-transparent-stroke-or-anyway-clear-part-of-an-image-on-the-iphon can draw lines of various colors. I want to give him the ability to use a rubber tool to delete some part of the image drawn so far with the finger. I initially did this by using a white color for the stroke set with the CGContextSetRGBStrokeColor..
iPhone Core Animation - Drawing a Circle http://stackoverflow.com/questions/7991086/iphone-core-animation-drawing-a-circle shape layer in the center of the screen and animate the stroke of it clockwise so that it looks as if it is being drawn. You can of course use any shape you'd like. You can read this article on Ole Begemanns blog to learn more about how to.. drawAnimation.removedOnCompletion NO Remain stroked after the animation.. Animate from no part of the stroke being drawn to the entire stroke being drawn drawAnimation.fromValue NSNumber numberWithFloat 0.0f drawAnimation.toValue NSNumber numberWithFloat.. NO Remain stroked after the animation.. Animate from no part of the stroke being drawn to the entire stroke being drawn drawAnimation.fromValue NSNumber numberWithFloat 0.0f drawAnimation.toValue NSNumber numberWithFloat 1.0f Experiment with..
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