如何创建一个使用固定图像且没有箭头的 NSPopUpButton？

发布于 2024-10-06 06:55:59 字数 749 浏览 6 评论 0原文

我试图让 NSPopUpButton 像标准 NSButton 一样仅使用图像集进行渲染，但没有任何运气。

与 Mail.app 中的“+”按钮非常相似：

Not clicked Clicked

我认为他们是用 NSPopUpButton 做到的。我尝试过的显而易见的事情是：

NSMenuItem *imageItem = [[[NSMenuItem alloc] init] autorelease];
[imageItem setImage:[NSImage imageNamed:NSImageNameAddTemplate]];

[[popUpButton cell] setUsesItemFromMenu:NO];
[[popUpButton cell] setMenuItem:imageItem];
[[popUpButton cell] setImagePosition:NSImageOnly];

但这并不显示图像，而是仅显示一对箭头（我怀疑它们是在图像所在的位置绘制的）。调用 [popUpButton setImage:...] 也不会执行任何操作。

是否有记录的方法可以做到这一点，或者它是否归结为某些自定义子类化？

原文

I'm trying to get NSPopUpButton to render like a standard NSButton with only an image set, but not having any luck.

Much like the "+" button in Mail.app:

Not clicked
Clicked

I assume they did this with NSPopUpButton. The obvious thing I've tried is:

NSMenuItem *imageItem = [[[NSMenuItem alloc] init] autorelease];
[imageItem setImage:[NSImage imageNamed:NSImageNameAddTemplate]];

[[popUpButton cell] setUsesItemFromMenu:NO];
[[popUpButton cell] setMenuItem:imageItem];
[[popUpButton cell] setImagePosition:NSImageOnly];

This doesn't show the image however, instead it just shows a pair of arrows (I suspect they're drawn over where the image would be). Calling [popUpButton setImage:...] also does nothing.

Is there a documented way to do this, or does it come down to some custom subclassing?

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情场扛把子 2024-10-13 06:55:59

要防止按钮显示箭头：

[popupButton.cell setArrowPosition:NSPopUpNoArrow];

To prevent the button from displaying the arrow:

[popupButton.cell setArrowPosition:NSPopUpNoArrow];

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岁月静好 2024-10-13 06:55:59

这是我最终在 Swift 中使用的代码（模仿 Apple 的菜单疯狂演示应用程序）。

func setUpButton() {
    let popupButton = NSPopUpButton()
    popupButton.translatesAutoresizingMaskIntoConstraints = false
    popupButton.pullsDown = true
    popupButton.bordered = false
    let popupCell = popupButton.cell as! NSPopUpButtonCell
    popupCell.arrowPosition = NSPopUpArrowPosition.NoArrow
    popupButton.addItemWithTitle("")
    var item = popupButton.itemAtIndex(0)
    item?.image = NSImage(named: "add")
    item?.onStateImage = nil
    item?.mixedStateImage = nil
    popupButton.addItemWithTitle("Item1")
    item = popupButton.itemAtIndex(1)
    item?.action = #selector(item1Pressed)
    item?.target = self
    popupButton.addItemWithTitle("Item2")
    item = popupButton.itemAtIndex(2)
    item?.action = #selector(item2Tapped)
    item?.target = self
    self.addSubview(popupButton)

    // NOTE: These are auto layout helper methods I made that you won't have. 
    // Just note that here is where I set up the auto layout constraints.
    popupButton.widthConstraint(40)
    popupButton.heightConstraint(20)
    popupButton.centerVerticallyInSuperview()
    popupButton.trailingSpaceToSuperview(0)
}

// TO MAKE SURE ALL ITEMS ALWAYS VALID (WHAT I WANTED FOR MY USE CASE)
override func validateMenuItem(menuItem: NSMenuItem) -> Bool {
    return true
}

func item1Pressed() {
    // do stuff
}

func item2Pressed() {
    // do stuff
}

确保按钮的宽度/高度对于图像来说足够大。我发现按钮右侧有一些填充覆盖了我的小图像，直到我使按钮足够宽以容纳神秘的填充。

Here is the code I used to finally get this working in Swift (modeled after Apple's Menu Madness demo app).

func setUpButton() {
    let popupButton = NSPopUpButton()
    popupButton.translatesAutoresizingMaskIntoConstraints = false
    popupButton.pullsDown = true
    popupButton.bordered = false
    let popupCell = popupButton.cell as! NSPopUpButtonCell
    popupCell.arrowPosition = NSPopUpArrowPosition.NoArrow
    popupButton.addItemWithTitle("")
    var item = popupButton.itemAtIndex(0)
    item?.image = NSImage(named: "add")
    item?.onStateImage = nil
    item?.mixedStateImage = nil
    popupButton.addItemWithTitle("Item1")
    item = popupButton.itemAtIndex(1)
    item?.action = #selector(item1Pressed)
    item?.target = self
    popupButton.addItemWithTitle("Item2")
    item = popupButton.itemAtIndex(2)
    item?.action = #selector(item2Tapped)
    item?.target = self
    self.addSubview(popupButton)

    // NOTE: These are auto layout helper methods I made that you won't have. 
    // Just note that here is where I set up the auto layout constraints.
    popupButton.widthConstraint(40)
    popupButton.heightConstraint(20)
    popupButton.centerVerticallyInSuperview()
    popupButton.trailingSpaceToSuperview(0)
}

// TO MAKE SURE ALL ITEMS ALWAYS VALID (WHAT I WANTED FOR MY USE CASE)
override func validateMenuItem(menuItem: NSMenuItem) -> Bool {
    return true
}

func item1Pressed() {
    // do stuff
}

func item2Pressed() {
    // do stuff
}

Be sure to make the width/height of the button big enough for the image. I found there was some padding on the right side of the button that covered my small image until I made the button wide enough to accommodate the mysterious padding.

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