当编辑代码时, Xcode 是显示文本控件的斜体, 如下划按钮可以显示上下文菜单 s。 我见过其他 OS X 应用程序可以处理具有类似功能的文本。 见所附的样本 。
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我想这个效果是通过 NSTextAttachmentCell 获得的,虽然我不知道这是否是执行这一效果的适当方式。
对于我自己的应用程序,我也想使用这种技术。
我有以下几个问题:
NSTextAttachmentCell 是否是执行此特性的正确方法? 如果没有,会是什么?
我如何将一个可与上述样本中的控件相比的控件附加到特定的文本范围,使其在NSTextView 中的位置是动态的,并跟随布局动作?
我发现 < a href=> "http://cocoadev.com/wiki/controls Mixed withTextHowTo" rel="notfollow noreferrer" > this 提供了一些提示,但不包含特定文本区域的附件 。
虽然 NSTextAttachmentCell 将有效,但有一个不利之处:单元格在文本中将变成一个非我所想要的格子。它扭曲文本的布局,是可选择的等等。 我希望在文本上画出单元格,就像 Xcode 中的行为一样。
挑战在于找到一种方法,将鼠标移动事件中的点转换为 NSTextView 内某个字符串的位置。
在进一步挖掘后,我在苹果演示应用程序中发现了一个小宝石,名为LayoutManagerDemo 。这个演示显示一个自定义的子类,即 NSTextView , 能够突出单个字符、单词和线条,而鼠标正在捕捉它的观点。从那里很容易在需要的
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