用卡布奇诺清除并重新绘制 (Objective-J)

发布于 2024-07-20 02:32:32 字数 667 浏览 9 评论 0原文

基本上我有这个

@implementation MyView : CPView
{
  CPArray MyPanelArray;
}

// Populate the MyPanelArray and position each panel
- (void)initMyView
{
  ...
}

MyPanels 几乎是图像的包装器。当一切都初始化后，它就画得很好了。然后我有一个滑块来操纵图像的位置，我知道如何重绘所有内容的唯一方法是用新实例覆盖 MyView 并在主 contentView 中执行类似的操作

// Has the correct effect, but feels wrong
- (void)sliderAction:(id)sender
{
    var myNewView = [MyView initWithPositionValue:[sender value]];
    [_contentView replaceSubview:_myView with:myNewView];
    _myView = myNewView;
}

它工作正常，但我怀疑这就是“正确的方法”。

*我知道我可以使用 CPCollectionView 进行基本设置，但它无法完成我想要完成的任务。

提前致谢。

原文

basically I have this

@implementation MyView : CPView
{
  CPArray MyPanelArray;
}

// Populate the MyPanelArray and position each panel
- (void)initMyView
{
  ...
}

MyPanels are pretty much wrappers for images. When everything is initialized it draws just fine. Then I have a slider to manipulate the position of the images and the only way I know how to redraw everything is to overwrite the MyView with a new instance and in the main contentView do something like

// Has the correct effect, but feels wrong
- (void)sliderAction:(id)sender
{
    var myNewView = [MyView initWithPositionValue:[sender value]];
    [_contentView replaceSubview:_myView with:myNewView];
    _myView = myNewView;
}

It works all right, but I doubt thats the "right way".

*I know I can use a CPCollectionView for a basic setup, but its not going to work for what I'm trying to accomplish.

Thanks in advance.

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