blocks|key|959332|text|文档中提供的Scroll+View+Programming+Guide+for+Cocoa中列出了您需要了解的有关NSScrollView的所有内容。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|959333|虽然看起来没有直接的等价物，但UIScrollView的contentSize可以比作NSScrollView的documentView的大小，后者是通过setDocumentView:作为NSView+to+NSScrollView提供的可滚动内容。|959334|可以将setContentOffset:与NSView的scrollPoint:进行比较，后者使用NSPoint来指定documentView在NSScrollView中的偏移量。|959335|有关详细说明和代码示例，请参阅文档。|959336|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/NSScrollViewGuide/Articles/Basics.html^0|1L|C|6|13|0|0|F|C|S|B|17|C|1K|C|25|G|2N|6|2X|C|0|3|H|L|6|S|C|1D|7|1N|C|20|C|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@$9|U|A|V|B|C]]|D|@$9|W|A|X|1|Y]]|E|$]]|$1|F|3|G|5|6|7|Z|8|@$9|10|A|11|B|C]|$9|12|A|13|B|C]|$9|14|A|15|B|C]|$9|16|A|17|B|C]|$9|18|A|19|B|C]|$9|1A|A|1B|B|C]|$9|1C|A|1D|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|1E|8|@$9|1F|A|1G|B|C]|$9|1H|A|1I|B|C]|$9|1J|A|1K|B|C]|$9|1L|A|1M|B|C]|$9|1N|A|1O|B|C]|$9|1P|A|1Q|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|1R|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|1S|8|@]|D|@]|E|$]]]|M|$N|$5|O|P|Q|E|$R|S]]]]

Everything you need to know about <code>NSScrollView</code> is laid out in the <a href="http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/NSScrollViewGuide/Articles/Basics.html" rel="nofollow">Scroll View Programming Guide for Cocoa</a> provided in the documentation.

Although it doesn't appear that there's a direct equivalent, <code>UIScrollView</code>'s <code>contentSize</code> can be likened to the size of <code>NSScrollView</code>'s <code>documentView</code>, which is the scrollable content provided as an <code>NSView</code> to <code>NSScrollView</code> with <code>setDocumentView:</code>.

<code>setContentOffset:</code> can be compared to <code>NSView</code>'s <code>scrollPoint:</code>, which uses an <code>NSPoint</code> to specify the offset of the <code>documentView</code> within the <code>NSScrollView</code>.

See the documentation for elaboration and code examples.

blocks|key|1173735|text|UIScrollView*+uiScroll;
uiScroll.contentSize;
uiScroll.contentOffset;
uiScroll.contentSize+=+CGSizeMake(w,h);
uiScroll.contentOffset+=+CGPointMake(x,y);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1173736|=|unstyled|1173737|NSScrollView*+nsScroll;
nsScroll.documentView.frame.size;
nsScroll.documentVisibleRect.origin;
nsScroll.documentView.frameSize+=+NSMakeSize(w,h);
[nsScroll.documentView+scrollPoint:NSMakePoint(x,y)];|1173738|或者甚至更好：|1173739|import+AppKit

extension+NSScrollView+{
++++var+documentSize:+NSSize+{
++++++++set+{+documentView?.setFrameSize(newValue)+}
++++++++get+{+documentView?.frame.size+??+NSSize.zero+}
++++}
++++var+documentOffset:+NSPoint+{
++++++++set+{+documentView?.scroll(newValue)+}
++++++++get+{+documentVisibleRect.origin+}
++++}
}|1173740|注意:我使用'documentSize‘(和'documentOffset')是因为'contentSize’与已经存在的NSScrollView属性冲突。|1173741|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$B|C]]|$1|M|3|N|5|F|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|F|7|W|8|@]|9|@]|A|$]]]|P|$]]

<pre><code>UIScrollView* uiScroll;
uiScroll.contentSize;
uiScroll.contentOffset;
uiScroll.contentSize = CGSizeMake(w,h);
uiScroll.contentOffset = CGPointMake(x,y);
</code></pre>
=
<pre><code>NSScrollView* nsScroll;
nsScroll.documentView.frame.size;
nsScroll.documentVisibleRect.origin;
nsScroll.documentView.frameSize = NSMakeSize(w,h);
[nsScroll.documentView scrollPoint:NSMakePoint(x,y)];
</code></pre>
Or perhaps even better:
<pre><code>import AppKit

extension NSScrollView {
 var documentSize: NSSize {
 set { documentView?.setFrameSize(newValue) }
 get { documentView?.frame.size ?? NSSize.zero }
 }
 var documentOffset: NSPoint {
 set { documentView?.scroll(newValue) }
 get { documentVisibleRect.origin }
 }
}
</code></pre>
Notes: I used 'documentSize' (and 'documentOffset') because 'contentSize' conflicts with an already existing property of NSScrollView.

blocks|key|959558|text|除了@aepryus中的几行代码外，这里还有几行更有用的代码来获取/设置macOS上的滚动偏移量：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|959559|//Get+the+current+scroll+offset:
_contentViewOffset+=+scrollView.contentView.bounds.origin;

//Set+the+scroll+offset+from+the+retrieved+point:
NSPoint+scrollPoint+=+[scrollView.contentView+convertPoint:_contentViewOffset+toView:scrollView.documentView];
[scrollView.documentView+scrollPoint:scrollPoint];|code-block|syntax|javascript|959560|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

In addition to the lines from @aepryus, here are a couple more useful lines for getting/setting the scroll offset on macOS:

<pre><code>//Get the current scroll offset:
_contentViewOffset = scrollView.contentView.bounds.origin;

//Set the scroll offset from the retrieved point:
NSPoint scrollPoint = [scrollView.contentView convertPoint:_contentViewOffset toView:scrollView.documentView];
[scrollView.documentView scrollPoint:scrollPoint];
</code></pre>

I am porting an app from Ipad to mac. (I know that it sounds weird)

I stuck with NSScrollview. Please guide me contentsize , contentOffset equivalent in NSScrollview.

contentsize and contentOffset equivalent in NSScroll view

我正在把一个应用程序从Ipad移植到mac上。(我知道这听起来很奇怪)我坚持使用NSScrollview。请指导我contentsize，相当于NSScrollview中的contentOffset。

问NSScroll视图中的contentsize和contentOffset等效项
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