NSStatusItem 右键菜单

Question

我正在开发一个具有左右单击功能的状态栏应用程序。我已经按照其他帖子的提示开始了这项工作，但我不确定如何在右键单击时显示菜单。

我使用一个子类 NSView 作为我的 NSStatusItem 的自定义视图，并让右键和左键单击执行不同的功能：

- (void)mouseDown:(NSEvent *)theEvent{
    [super mouseDown:theEvent];
    if ([theEvent modifierFlags] & NSCommandKeyMask){
        [self.target performSelectorOnMainThread:self.rightAction withObject:nil waitUntilDone:NO];
    }else{
        [self.target performSelectorOnMainThread:self.action withObject:nil waitUntilDone:NO];
    }
}

- (void)rightMouseDown:(NSEvent *)theEvent{
    [super rightMouseDown:theEvent];
    [self.target performSelectorOnMainThread:self.rightAction withObject:nil waitUntilDone:NO];
}

如何在右键单击时显示菜单，就像标准 NSStatusItem 在左键单击时一样？

Answer 1

NSStatusItem popUpStatusItemMenu: 成功了。我从我的右键单击操作中调用它并传入我想要显示的菜单并且它正在显示它！这不是我期望这个函数做的，但它正在工作。

这是我的代码的重要部分：

- (void)showMenu{
    // check if we are showing the highlighted state of the custom status item view
    if(self.statusItemView.clicked){
        // show the right click menu
        [self.statusItem popUpStatusItemMenu:self.rightClickMenu];
    }
}

// menu delegate method to unhighlight the custom status bar item view
- (void)menuDidClose:(NSMenu *)menu{ 
    [self.statusItemView setHighlightState:NO];
}

- (void)applicationDidFinishLaunching:(NSNotification *)aNotification{
    // setup custom view that implements mouseDown: and rightMouseDown:
    self.statusItemView = [[ISStatusItemView alloc] init];
    self.statusItemView.image = [NSImage imageNamed:@"menu.png"];
    self.statusItemView.alternateImage = [NSImage imageNamed:@"menu_alt.png"];    
    self.statusItemView.target = self;
    self.statusItemView.action = @selector(mainAction);
    self.statusItemView.rightAction = @selector(showMenu);

    // set menu delegate
    [self.rightClickMenu setDelegate:self];

    // use the custom view in the status bar item
    self.statusItem = [[NSStatusBar systemStatusBar] statusItemWithLength:NSSquareStatusItemLength];
    [self.statusItem setView:self.statusItemView];
}

这是自定义视图的实现：

@implementation ISStatusItemView

@synthesize image = _image;
@synthesize alternateImage = _alternateImage;
@synthesize clicked = _clicked;
@synthesize action = _action;
@synthesize rightAction = _rightAction;
@synthesize target = _target;

- (void)setHighlightState:(BOOL)state{
    if(self.clicked != state){
        self.clicked = state;
        [self setNeedsDisplay:YES];
    }
}

- (void)drawImage:(NSImage *)aImage centeredInRect:(NSRect)aRect{
    NSRect imageRect = NSMakeRect((CGFloat)round(aRect.size.width*0.5f-aImage.size.width*0.5f),
                                  (CGFloat)round(aRect.size.height*0.5f-aImage.size.height*0.5f),
                                  aImage.size.width, 
                                  aImage.size.height);
    [aImage drawInRect:imageRect fromRect:NSZeroRect operation:NSCompositeSourceOver fraction:1.0f];
}

- (void)drawRect:(NSRect)rect{
    if(self.clicked){
        [[NSColor selectedMenuItemColor] set];
        NSRectFill(rect);        
        if(self.alternateImage){
            [self drawImage:self.alternateImage centeredInRect:rect];
        }else if(self.image){
            [self drawImage:self.image centeredInRect:rect];
        }
    }else if(self.image){
        [self drawImage:self.image centeredInRect:rect];
    }
}

- (void)mouseDown:(NSEvent *)theEvent{
    [super mouseDown:theEvent];
    [self setHighlightState:!self.clicked];
    if ([theEvent modifierFlags] & NSCommandKeyMask){
        [self.target performSelectorOnMainThread:self.rightAction withObject:nil waitUntilDone:NO];
    }else{
        [self.target performSelectorOnMainThread:self.action withObject:nil waitUntilDone:NO];
    }
}

- (void)rightMouseDown:(NSEvent *)theEvent{
    [super rightMouseDown:theEvent];
    [self setHighlightState:!self.clicked];
    [self.target performSelectorOnMainThread:self.rightAction withObject:nil waitUntilDone:NO];
}

- (void)dealloc{
    self.target = nil;
    self.action = nil;
    self.rightAction = nil;
    [super dealloc];
}

@end

Answer 2

一种选择是假装鼠标左键向下：

- (void)rightMouseDown: (NSEvent *)event {
    NSEvent * newEvent;
    newEvent = [NSEvent mouseEventWithType:NSLeftMouseDown
                                  location:[event locationInWindow]
                             modifierFlags:[event modifierFlags]
                                 timestamp:CFAbsoluteTimeGetCurrent()
                              windowNumber:[event windowNumber]
                                   context:[event context]
                               eventNumber:[event eventNumber]
                                clickCount:[event clickCount]
                                  pressure:[event pressure]];
    [self mouseDown:newEvent];
}

Answer 3

在视图中需要标题时添加了一些东西

- (void)drawRect:(NSRect)rect{
    if(self.clicked){
        [[NSColor selectedMenuItemColor] set];
        NSRectFill(rect);
        if(self.alternateImage){
            [self drawImage:self.alternateImage centeredInRect:rect];
        }else if(self.image){
            [self drawImage:self.image centeredInRect:rect];
        } else {
            [self drawTitleInRect:rect];
        }
    } else if(self.image){
        [self drawImage:self.image centeredInRect:rect];
    } else {
        [self drawTitleInRect:rect];
    }

}

-(void)drawTitleInRect:(CGRect)rect
{
    CGSize size = [_title sizeWithAttributes:nil];

    CGRect newRect = CGRectMake(MAX((rect.size.width - size.width)/2.f,0.f),
                                MAX((rect.size.height - size.height)/2.f,0.f),
                                size.width,
                                size.height);

    NSDictionary *attributes = @{NSForegroundColorAttributeName : self.clicked?[NSColor highlightColor]:[NSColor textColor]
                                 };
    [_title drawInRect:newRect withAttributes:attributes];

}

Answer 4

- (void)statusItemAction {
    NSEvent *event = NSApp.currentEvent;
    
    if (event.type == NSEventTypeRightMouseDown || (event.modifierFlags & NSEventModifierFlagControl)) {
        [self toggleMenu];
    } else {
        [self togglePopOver];
    }
}