NSString 文本到NSString 图标？

发布于 2024-11-14 01:54:37 字数 1856 浏览 3 评论 0原文

我正在制作一个应用程序，它是一个独立的菜单项，代码的基础是我在网站上找到的示例代码。示例代码使用数字作为菜单图标，但我想将其更改为图像。

我希望它像其他应用程序一样，在未单击时显示 icon.png ，在单击时显示 icon-active.png 。

当前的代码是这样的：

- (void)drawRect:(NSRect)rect {
// Draw background if appropriate.
if (clicked) {
    [[NSColor selectedMenuItemColor] set];
    NSRectFill(rect);
}

// Draw some text, just to show how it's done.
NSString *text = @"3"; // whatever you want

NSColor *textColor = [NSColor controlTextColor];
if (clicked) {
    textColor = [NSColor selectedMenuItemTextColor];
}

NSFont *msgFont = [NSFont menuBarFontOfSize:15.0];
NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init];
[paraStyle setParagraphStyle:[NSParagraphStyle defaultParagraphStyle]];
[paraStyle setAlignment:NSCenterTextAlignment];
[paraStyle setLineBreakMode:NSLineBreakByTruncatingTail];
NSMutableDictionary *msgAttrs = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                 msgFont, NSFontAttributeName,
                                 textColor, NSForegroundColorAttributeName,
                                 paraStyle, NSParagraphStyleAttributeName,
                                 nil];
[paraStyle release];

NSSize msgSize = [text sizeWithAttributes:msgAttrs];
NSRect msgRect = NSMakeRect(0, 0, msgSize.width, msgSize.height);
msgRect.origin.x = ([self frame].size.width - msgSize.width) / 2.0;
msgRect.origin.y = ([self frame].size.height - msgSize.height) / 2.0;

[text drawInRect:msgRect withAttributes:msgAttrs];
}

另外，我找到了一篇描述如何执行此操作的方法的帖子，但它对我不起作用。其网址是这样的： http://mattgemmell.com/2008/03/04/using-maattachedwindow-with-an-nsstatusitem/comment-page-1#comment-46501。

谢谢！

原文

I am making an app that is a standalone menu item and the basis for the code is sample code I found on a website. The sample code uses a number as the menu icon, but I want to change it to an image.

I want it to be like other apps where it shows icon.png when not clicked and icon-active.png when clicked.

The current code is this:

- (void)drawRect:(NSRect)rect {
// Draw background if appropriate.
if (clicked) {
    [[NSColor selectedMenuItemColor] set];
    NSRectFill(rect);
}

// Draw some text, just to show how it's done.
NSString *text = @"3"; // whatever you want

NSColor *textColor = [NSColor controlTextColor];
if (clicked) {
    textColor = [NSColor selectedMenuItemTextColor];
}

NSFont *msgFont = [NSFont menuBarFontOfSize:15.0];
NSMutableParagraphStyle *paraStyle = [[NSMutableParagraphStyle alloc] init];
[paraStyle setParagraphStyle:[NSParagraphStyle defaultParagraphStyle]];
[paraStyle setAlignment:NSCenterTextAlignment];
[paraStyle setLineBreakMode:NSLineBreakByTruncatingTail];
NSMutableDictionary *msgAttrs = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                 msgFont, NSFontAttributeName,
                                 textColor, NSForegroundColorAttributeName,
                                 paraStyle, NSParagraphStyleAttributeName,
                                 nil];
[paraStyle release];

NSSize msgSize = [text sizeWithAttributes:msgAttrs];
NSRect msgRect = NSMakeRect(0, 0, msgSize.width, msgSize.height);
msgRect.origin.x = ([self frame].size.width - msgSize.width) / 2.0;
msgRect.origin.y = ([self frame].size.height - msgSize.height) / 2.0;

[text drawInRect:msgRect withAttributes:msgAttrs];
}

Also, I found a post describing a method on how to do this, but it did not work for me. The url to that is this: http://mattgemmell.com/2008/03/04/using-maattachedwindow-with-an-nsstatusitem/comment-page-1#comment-46501.

Thanks!

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凑诗 2024-11-21 01:54:37

使用 NSImage 并将其绘制在需要的位置。例如：

NSString *name = clicked? @"icon-active" : @"icon";
NSImage *image = [NSImage imageNamed:name];
NSPoint p = [self bounds].origin;
[image drawAtPoint:p fromRect:NSZeroRect
         operation:NSCompositeSourceOver fraction:1.0];

Use an NSImage and draw it where desired. For example:

NSString *name = clicked? @"icon-active" : @"icon";
NSImage *image = [NSImage imageNamed:name];
NSPoint p = [self bounds].origin;
[image drawAtPoint:p fromRect:NSZeroRect
         operation:NSCompositeSourceOver fraction:1.0];

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