NSCGImageSnapshotRep，如何获取bitmapData [英] NSCGImageSnapshotRep, how get bitmapData

问题描述

我有一个只有一个表示形式的图片，这是一个 NSCGImageSnapshotRep 。

c $ c> [NSCGImageSnapshotRep bitmapData] ，但是类没有 bitmapData 的选择器。

有人知道这个班吗？如何获取 bitmapData ？

---

这个来自Webkit的NSImage [DOMElement renderedImage] 。

创建DOMElement目标C的位图

正确的用法是 [NSBitmapImageRep representationUsingType：id properties：id] ，这意味着在这种情况下不起作用。

< t考虑compatibily，我很高兴找到一个解决方案 10.5 + 或 10.6 + 。

解决方案

  NSImage * img = [DOMElement renderedImage]; 
 [img lockFocus]; 
 NSBitmapImageRep * bitmapRep = [[NSBitmapImageRep alloc] initWithFocusedViewRect：NSMakeRect（0.0，0.0，[img size] .width，[img size] .height）]; 
 [img unlockFocus]; 
 
 ... 
 
 //不要忘记当你完成rep：
 [bitmapRep release]; 
  

I got a image with only one representation, and that was a NSCGImageSnapshotRep.

I tried [NSCGImageSnapshotRep bitmapData] but, the class has no selector for bitmapData.

Someone knows this class? How can I get the bitmapData?

---

I'm getting this NSImage from Webkit [DOMElement renderedImage].

Create bitmap of a DOMElement Objective C

The correct use is [NSBitmapImageRep representationUsingType:id properties:id], this means doesn't work in the case.

I didn't think about compatibily, I'll be glad to find a solution 10.5+ or 10.6+.

解决方案

NSImage *img = [DOMElement renderedImage] ;
[img lockFocus] ;
NSBitmapImageRep *bitmapRep = [[NSBitmapImageRep alloc] initWithFocusedViewRect:NSMakeRect(0.0, 0.0, [img size].width, [img size].height)] ;
[img unlockFocus] ;

...

// don't forget when you are done with the rep:
[bitmapRep release] ;

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