使用自定义视图突出显示NSMenuItem？ [英] Highlighting a NSMenuItem with a custom view?

问题描述

我创建了一个简单的 NSStatusBar ，并将 NSMenu 设置为菜单。我还添加了一些 NSMenuItems 到这个菜单，它工作正常（包括选择器和突出显示），但一旦我添加自定义视图（setView :)不突出发生。

  CustomMenuItem * menuItem = [[CustomMenuItem alloc] initWithTitle：@action：@selector（openPreferences :) keyEquivalent：@ ]; 
 [menuItem foo]; 
 [menuItem setTarget：self]; 
 [statusMenu insertItem：menuItem atIndex：0]; 
 [menuItem release]; 
  

我的foo方法是：

   - （void）foo {
 NSView * view = [[NSView alloc] initWithFrame：CGRectMake（5，10，100，20） 
 [self setView：view]; 
} 
  

如果我删除了setView方法，它会突出显示。

我已经搜索和搜索，找不到实现/启用此方法的方法。

编辑 / p>

我在NSView子类中按照这个问题的代码实现了高亮显示：

NSMenuItem的视图（NSView子类的实例）不突出显示悬停

  #define menuItem（[self enclosingMenuItem]）
 
  - ）drawRect：（NSRect）rect {
 BOOL isHighlighted = [menuItem isHighlighted]; 
 if（isHighlighted）{
 [[NSColor selectedMenuItemColor] set]; 
 [NSBezierPath fillRect：rect]; 
} else {
 [super drawRect：rect]; 
} 
} 
  

解决方案

您要向菜单项添加视图，该视图必须绘制突出显示本身。你不能免费得到，恐怕。从菜单编程主题：

具有视图的菜单项不会绘制其标题，状态，字体或其他标准绘图属性，并将绘图责任完全分配给视图。

I have created a simple NSStatusBar with a NSMenu set as the menu. I have also added a few NSMenuItems to this menu, which work fine (including selectors and highlighting) but as soon as I add a custom view (setView:) no highlighting occurs.

CustomMenuItem *menuItem = [[CustomMenuItem alloc] initWithTitle:@"" action:@selector(openPreferences:) keyEquivalent:@""];
[menuItem foo];
[menuItem setTarget:self];
[statusMenu insertItem:menuItem atIndex:0];
[menuItem release];

And my foo method is:

- (void)foo {
  NSView *view = [[NSView alloc] initWithFrame:CGRectMake(5, 10, 100, 20)];
  [self setView:view];
}

If I remove the setView method, it will highlight.

I have searched and searched and cannot find a way of implementing/enabling this.

Edit

I implemented highlight by following the code in this question in my NSView SubClass:

An NSMenuItem's view (instance of an NSView subclass) isn't highlighting on hover

#define menuItem ([self enclosingMenuItem])

- (void) drawRect: (NSRect) rect {
    BOOL isHighlighted = [menuItem isHighlighted];
    if (isHighlighted) {
        [[NSColor selectedMenuItemColor] set];
        [NSBezierPath fillRect:rect];
    } else {
        [super drawRect: rect];
    }
}

解决方案

If you're adding a view to a menu item, that view has to draw the highlight itself. You don't get that for free, I'm afraid. From the Menu Programming Topics:

A menu item with a view does not draw its title, state, font, or other standard drawing attributes, and assigns drawing responsibility entirely to the view.

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