可可：像窗口一样停靠

Posted 2023-02-24

【中文标题】可可：像窗口一样停靠

【英文标题】：cocoa : dock like window

【发布时间】：2010-08-01 15:04:45

【问题描述】：

我希望创建一个类似于停靠窗口的 NSWindow： - 当鼠标光标停留在屏幕的一个边缘时出现 - 不获取焦点（拥有焦点的应用会保持焦点）但会接收鼠标事件

知道如何实现这个吗？

提前感谢您的帮助，

【参考方案1】：

您可以对窗口的 alpha 值做一些事情。使用 NSView 的这个子类作为窗口的内容视图。

#import <Cocoa/Cocoa.h>

@interface IEFMouseOverView : NSView 
    BOOL canHide;
    BOOL canShow;

- (id)initWithFrame:(NSRect)r;
@end


@interface IEFMouseOverView (PrivateMethods)
- (void)showWindow:(NSTimer *)theTimer;
- (void)hideWindow:(NSTimer *)theTimer;
@end

@implementation IEFMouseOverView
- (void)awakeFromNib 
    [[self window] setAcceptsMouseMovedEvents:YES];
    [self addTrackingRect:[self bounds] owner:self userData:nil
             assumeInside:NO];

- (id)initWithFrame:(NSRect)r 
    self = [super initWithFrame:r];
    if(self) 
        NSLog(@"Gutentag");
        [[self window] setAcceptsMouseMovedEvents:YES];
        [self addTrackingRect:[self bounds] owner:self userData:nil
                 assumeInside:NO];
    
    return self;


- (void)mouseEntered:(NSEvent *)ev 
    canShow = YES;
    canHide = NO;
    NSTimer *showTimer = [NSTimer scheduledTimerWithTimeInterval:0.1 
                                                          target:self 
                                                        selector:@selector(showWindow:) 
                                                        userInfo:nil 
                                                         repeats:YES];
    [showTimer fire];


- (void)mouseExited:(NSEvent *)ev 
    canShow = NO;
    canHide = YES;
    NSTimer *hideTimer = [NSTimer scheduledTimerWithTimeInterval:0.1 
                                                          target:self 
                                                        selector:@selector(hideWindow:) 
                                                        userInfo:nil
                                                         repeats:YES];
    [hideTimer fire];


- (void)showWindow:(NSTimer *)theTimer 
    NSWindow *myWindow = [self window];
    float originalAlpha = [myWindow alphaValue];
    if(originalAlpha >= 1 || canShow == NO) 
        [theTimer invalidate];
        return;
    
    [myWindow setAlphaValue:originalAlpha + 0.1];


- (void)hideWindow:(NSTimer *)theTimer 
    NSWindow *myWindow = [self window];
    float originalAlpha = [myWindow alphaValue];
    if(originalAlpha <= 0 || canHide == NO) 
        [theTimer invalidate];
        return;
    
    [myWindow setAlphaValue:originalAlpha - 0.1];

@end