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2014/10/15 ¤U¤È 10:05:01

iphone Programming Glossary: cgcontextgettextposition

Is it possible to alter the letter-spacing/kerning of a font with Cocoa Touch?

http://stackoverflow.com/questions/1063268/is-it-possible-to-alter-the-letter-spacing-kerning-of-a-font-with-cocoa-touch

1.f 1.f CGContextSetTextMatrix context myTextTransform draw 1 but invisbly to get the string length. CGPoint p CGContextGetTextPosition context float centeredY self.font.pointSize self.frame.size.height self.font.pointSize 2 2 CGContextShowTextAtPoint context.. context 0 centeredY self.text cStringUsingEncoding NSASCIIStringEncoding self.text length CGPoint v CGContextGetTextPosition context calculate width and draw second one. float width v.x p.x float destX 0 calculate X position based on alignment if..

How do I make UILabel display outlined text?

http://stackoverflow.com/questions/1103148/how-do-i-make-uilabel-display-outlined-text

char str CGContextSetTextDrawingMode gc kCGTextInvisible CGContextShowTextAtPoint gc 0 0 str strlen str CGPoint pt CGContextGetTextPosition gc CGContextSetTextDrawingMode gc kCGTextFillStroke CGContextShowTextAtPoint gc x pt.x 2 y str strlen str void drawRect..

How to change an UILabel/UIFont's letter spacing?

http://stackoverflow.com/questions/2544905/how-to-change-an-uilabel-uifonts-letter-spacing

1.f 1.f CGContextSetTextMatrix context myTextTransform draw 1 but invisbly to get the string length. CGPoint p CGContextGetTextPosition context float centeredY self.font.pointSize self.frame.size.height self.font.pointSize 2 2 CGContextShowTextAtPoint context.. context 0 centeredY self.text cStringUsingEncoding NSASCIIStringEncoding self.text length CGPoint v CGContextGetTextPosition context calculate width and draw second one. float width v.x p.x float centeredX self.frame.size.width width 2 CGContextSetFillColorWithColor..

iPhone SDK: How do you measure the width and height of a string using Quartz?

http://stackoverflow.com/questions/913470/iphone-sdk-how-do-you-measure-the-width-and-height-of-a-string-using-quartz

than ATSUI or Cocoa you can follow these steps to measure the width of text before Quartz draws it Call the function CGContextGetTextPosition to obtain the current text position. Set the text drawing mode to kCGTextInvisible using the function CGContextSetTextDrawingMode... to draw the text at the current text position. Determine the final text position by calling the function CGContextGetTextPosition. Subtract the starting position from the ending position to determine the width of the text. Here are my questions Is this..