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/*
* (a) (C) 1990 by Adobe Systems Incorporated. All rights reserved.
*
* (b) If this Sample Code is distributed as part of the Display PostScript
* System Software Development Kit from Adobe Systems Incorporated,
* then this copy is designated as Development Software and its use is
* subject to the terms of the License Agreement attached to such Kit.
*
* (c) If this Sample Code is distributed independently, then the following
* terms apply:
*
* (d) This file may be freely copied and redistributed as long as:
* 1) Parts (a), (d), (e) and (f) continue to be included in the file,
* 2) If the file has been modified in any way, a notice of such
* modification is conspicuously indicated.
*
* (e) PostScript, Display PostScript, and Adobe are registered trademarks of
* Adobe Systems Incorporated.
*
* (f) THE INFORMATION BELOW IS FURNISHED AS IS, IS SUBJECT TO
* CHANGE WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED
* AS A COMMITMENT BY ADOBE SYSTEMS INCORPORATED.
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/*
* ScrollingView.m
*
* The sole purpose of subclassing ScrollView is to sync up the
* scrolling of the alpha buffer with the scrolling of the window.
*
* The lockFocus and the unlockFocus are a little voodoo magic
* that causes the compositing in the raw scroll of the buffer to work.
* (The window that contains the buffer is displayed when it is first
* created in order to set the canDraw instance variable in buffer
* view to YES. Again, more voodoo.)
*
* Version: 2.0
* Author: Ken Fromm
* History:
* 03-07-91 Added this comment.
*/
#import "ScrollingView.h"
#import "DetectApp.h"
#import "DrawingView.h"
#import <appkit/ClipView.h>
@implementation ScrollingView
- scrollClip:aClipView to:(const NXPoint *)aPoint
{
id bufferAlpha;
bufferAlpha = [NXApp getBufferAlpha];
[[bufferAlpha superview] setCopyOnScroll:[[NXApp getDrawingView] isScrolling]];
[[bufferAlpha superview] rawScroll:aPoint];
[bufferAlpha lockFocus];
[bufferAlpha unlockFocus];
[aClipView rawScroll:aPoint];
return self;
}
@end
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