如何强制重绘 NSScrollView 内的内容

发布于 2024-11-28 02:54:19 字数 846 浏览 0 评论 0原文

我将 NSTextView + NSImageView + NSMatrix + NSTextView 放在 NSScrollView 中。我使用以下代码将此滚动视图滚动到顶部 -

NSPoint pointToScrollTo = NSMakePoint(0, NSMaxY([[singleScrollView documentView] frame]) - [[singleScrollView contentView] bounds].size.height);
[[singleScrollView contentView] scrollToPoint: pointToScrollTo];
[singleScrollView reflectScrolledClipView: [singleScrollView contentView]];

但问题是当它完成滚动到顶部时，视图会变得混乱。这是一个屏幕截图 -

在此处输入图像描述

我尝试使用此方法强制重绘内容，但没有成功 -

[txtQTitle setNeedsDisplay:YES];
[viewOptions setNeedsDisplay:YES];
[singleScrollView setNeedsDisplay:YES];

有人知道为什么会导致这种情况以及应该如何解决吗？

编辑 1 - 当我使用鼠标滚动视图时，singleScrollView 的某些部分就可以了..这是一个屏幕截图 - 在此处输入图像描述

原文

I put NSTextView + NSImageView + NSMatrix + NSTextView in a NSScrollView. And I scroll this scrollview to top using following code -

NSPoint pointToScrollTo = NSMakePoint(0, NSMaxY([[singleScrollView documentView] frame]) - [[singleScrollView contentView] bounds].size.height);
[[singleScrollView contentView] scrollToPoint: pointToScrollTo];
[singleScrollView reflectScrolledClipView: [singleScrollView contentView]];

But the problem is when it finish scrolling to top the view gets messed up.. Here is a screenshot -

enter image description here

I tried to force redraw contents with no luck using this -

[txtQTitle setNeedsDisplay:YES];
[viewOptions setNeedsDisplay:YES];
[singleScrollView setNeedsDisplay:YES];

Do anyone have any idea why this is causing and how should be solved?

Edit 1 - When I scroll the view using mouse scroll some part of the singleScrollView gets ok .. here is a screenshot of this -
enter image description here

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