macOS获取屏幕窗口大小,获取宽度占窗口一半

鸣谢简书作者：原来你是这种花椒

就像iOS获取设备大小一样，macOS的窗口大小就是我们所需要的代码。

self.view.bounds.size.width
self.view.bounds.size.height

如果项目中使用Masonry插件，要获取当前view的宽度那就是，高度同宽度修改即可

 make.width.equalTo(self.view.mas_width).multipliedBy(0.5);//占屏幕宽度的一半

占屏幕宽度的一半再减去10

make.width.equalTo(ws.mas_width).multipliedBy(0.5).offset(-10);//占屏幕宽度的一半再减去10

 

我们在窗口变化的通知中监听当前窗口大小，来决定控件的大小显示。

交代清楚我们上代码，先复制一段代码运行感受一下。在从中选择我们需要的的代码。

#import "ViewController.h"
#import <WebKit/WebKit.h>
@interface ViewController ()
@property (nonatomic,strong)WKWebView * webView;
@end

@implementation ViewController

-(void)viewDidLoad {
    [super viewDidLoad];
    //观察窗口拉伸
    [[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(screenResize)
                                                name:NSWindowDidResizeNotification
                                              object:nil];


    
    _webView = [[WKWebView alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height)];//初始化
    [self.view addSubview:_webView];

    //1.网络
    _webView.allowsBackForwardNavigationGestures = YES;
    NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"https://www.hao123.com/"]];

    [_webView loadRequest:request];
}

-(void)screenResize{
    
    NSLog(@"观察窗口拉伸");
    NSLog(@"%.2f===%.2f",self.view.bounds.size.width,self.view.bounds.size.height);

    _webView.frame = CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height);
    
}

好，我们开始总结macOS开发监听窗口的改变

1.观察窗口的拉伸

 [[NSNotificationCenter defaultCenter]addObserver:self      
                                         selector:@selector(screenResize)
                                             name:NSWindowDidResizeNotification
                                           object:nil];

-(void)screenResize{
    
    NSLog(@"观察窗口拉伸");
    NSLog(@"%.2f===%.2f",self.view.bounds.size.width,self.view.bounds.size.height);
}

2.即将进入全屏

[[NSNotificationCenter defaultCenter]addObserver:self 
                                        selector:@selector(willEnterFull:)
                                            name:NSWindowWillEnterFullScreenNotification
                                          object:nil];

-(void)willEnterFull:(NSNotification*)notification{

NSLog(@"即将全屏");

}

3.即将退出全屏

[[NSNotificationCenter defaultCenter]addObserver:self 
                                        selector:@selector(willExitFull:)
                                            name:NSWindowWillExitFullScreenNotification
                                          object:nil];

-(void)willExitFull:(NSNotification*)notification {

NSLog(@"即将退出全屏");

}

4.已经退出全屏

[[NSNotificationCenter defaultCenter]addObserver:self 
                                        selector:@selector(didExitFull:)
                                            name:NSWindowDidExitFullScreenNotification
                                          object:nil];

-(void)didExitFull:(NSNotification*)notification{

NSLog(@"推出全屏");

}

5.窗口最小化

[[NSNotificationCenter defaultCenter]addObserver:self 
                                        selector:@selector(didMiniaturize:)
                                            name:NSWindowDidMiniaturizeNotification
                                          object:nil];

-(void)didMiniaturize:(NSNotification*)notification{

NSLog(@"窗口变小");

}

6.窗口即将关闭

[[NSNotificationCenter defaultCenter]addObserver:self
                                        selector:@selector(willClose:)
                                            name:NSWindowWillCloseNotification
                                          object:nil];

-(void)willClose:(NSNotification*)notification{

NSLog(@"窗口关闭");

}