Mac_03_窗口顶置

功能描述: 

1. 可以把代码复制过来,并保持原来的高亮状态

2. 提供黑 白两种不同的背景状态切换

3. 支持窗口放大和缩小

4. 最重要的是: 该窗口一直置顶(当不再需要了可以按command + h 隐藏或退出程序)

5. 支持选择图片(比如代码的截图)

效果如下:

代码如下:

//
//  ViewController.m
//  mac_02_window
//
//  Created by beyond on 2018/6/5.
//  Copyright © 2018年 beyond. All rights reserved.
//

#import "ViewController.h"
#import 
@interface ViewController()
{
    NSWindow *_win;
    NSTextView *_textView;
    NSScrollView *_scrollView;
    
    NSButton *_switchBtn;
    NSButton *_chooseImgBtn;
    NSImageView *_imgView;
}
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    
    NSApplication* app = [NSApplication sharedApplication];
    
    //Create the main window
    NSRect rc = NSMakeRect(750, 1, 600, 350);
    NSUInteger uiStyle = NSTitledWindowMask | NSResizableWindowMask | NSClosableWindowMask;
    NSBackingStoreType backingStoreStyle = NSBackingStoreBuffered;
    NSWindow* win = [[NSWindow alloc] initWithContentRect:rc styleMask:uiStyle backing:backingStoreStyle defer:NO];
    [win setTitle:@"代码->顶置"];
    [win makeKeyAndOrderFront:win];
    
    //    给window添加一个NSTextField
    NSTextView *textField = [[NSTextView alloc]initWithFrame:win.contentView.frame];
    
//    textField.backgroundColor = [NSColor colorWithRed:29/255.0 green:30/255.0 blue:25/255.0 alpha:1];

    textField.backgroundColor = [NSColor colorWithRed:29/255.0 green:30/255.0 blue:25/255.0 alpha:1];
    
    textField.textColor = [NSColor whiteColor];
    textField.font = [NSFont systemFontOfSize:22];
    textField.frame = win.contentView.frame;
    
    // 生成ImgView
    //    创建imgView
    _imgView = [[NSImageView alloc]init];
    _imgView.image = [NSImage imageNamed:@"on.png"];
    _imgView.frame = textField.frame;
    _imgView.hidden = YES;
//    _imgView.imageScaling = NSImageScaleNone;
    [textField addSubview:_imgView];
    
    
    
    
    
    
    
    
    
    
    
    
    // 切换背景按钮
    NSButton *btn = [NSButton buttonWithTitle:@"切换背景" target:self action:@selector(changeBgColor:)];
    [self abstract_setBtn:btn titleString:@"切换背景" forColor:[NSColor whiteColor]];
    btn.frame = CGRectMake(textField.frame.size.width - 82, textField.frame.origin.y, 82, 32);
    [btn setButtonType:NSButtonTypeSwitch];
    _switchBtn = btn;
    
    [textField addSubview:btn];
    
    
    
    //    选择图片的按钮
    _chooseImgBtn = [NSButton buttonWithTitle:@"打开图片" target:self action:@selector(chooseImgBtnClicked:)];
    [_chooseImgBtn setButtonType:NSButtonTypeSwitch];
    _chooseImgBtn.frame = CGRectMake(textField.frame.size.width - 82, textField.frame.origin.y + 32, 82, 32);
    
    [self abstract_setBtn:_chooseImgBtn titleString:@"选择图片" forColor:[NSColor whiteColor]];
    [textField addSubview:_chooseImgBtn];
    
    
    //    创建scrollView
    NSScrollView *scrollView = [[NSScrollView alloc]initWithFrame:CGRectMake(0, 0, 600, 350)];

    [scrollView setDocumentView:textField];
    
    
    [scrollView setHasVerticalScroller:YES];
    scrollView.backgroundColor = [NSColor clearColor];
    _scrollView = scrollView;
    
    
    
    [win.contentView addSubview:scrollView];
    
    _textView = textField;
    
    // 窗口透明
    [win setOpaque:NO];
    [win setBackgroundColor:[NSColor clearColor]];
    
    
    [win makeMainWindow];
    [win setLevel:NSStatusWindowLevel];
    win.delegate = self;
    _win = win;
    //Start the event loop by calling NSApp run
    [NSApp run];
    
    //    监听窗口大小改变
    [[NSNotificationCenter defaultCenter] addObserver:win
                                             selector:@selector(windowDidResize:)
                                                 name:NSWindowDidResizeNotification
                                               object:self];
    
}


- (void)setRepresentedObject:(id)representedObject {
    [super setRepresentedObject:representedObject];
    // Update the view, if already loaded.
}

// window delegate
- (void)windowDidResize:(NSNotification *)notification
{
    _scrollView.frame = CGRectMake(0, -22, _win.frame.size.width, _win.frame.size.height);
    _textView.frame = CGRectMake(0, -22, _win.frame.size.width, _win.frame.size.height - 22);
    _imgView.frame = _textView.frame;
    //    width: 82, height: 32
    NSLog(@"%f",_switchBtn.frame.size.height);
    _switchBtn.frame = CGRectMake(_textView.frame.size.width - 82, 0, 82, 32);
    _chooseImgBtn.frame = CGRectMake(_textView.frame.size.width - 82, 32, 82, 32);
}


// 背景颜色改变
- (void)changeBgColor:(NSButton *)btn
{

    if(btn.state){
        _textView.backgroundColor = [NSColor whiteColor];
        
        
        [self abstract_setBtn:_switchBtn titleString:@"切换背景" forColor:[NSColor blackColor]];
        [self abstract_setBtn:_chooseImgBtn titleString:@"选择图片" forColor:[NSColor blackColor]];
    }else{
        _textView.backgroundColor = [NSColor colorWithRed:29/255.0 green:30/255.0 blue:25/255.0 alpha:1];
        
//        _textView.textColor = [NSColor whiteColor];
        
        
        [self abstract_setBtn:_switchBtn titleString:@"切换背景" forColor:[NSColor whiteColor]];
        [self abstract_setBtn:_chooseImgBtn titleString:@"选择图片" forColor:[NSColor whiteColor]];
    }
}

- (void)abstract_setBtn:(NSButton *)btn titleString:(NSString *)title forColor:(NSColor *)color
{
    // 创建段落样式，主要是为了设置居中
    NSMutableParagraphStyle *pghStyle = [[NSMutableParagraphStyle alloc] init];
    pghStyle.alignment = NSTextAlignmentLeft;
    // 创建Attributes，设置颜色和段落样式
    NSDictionary *dicAtt = @{NSForegroundColorAttributeName: color, NSParagraphStyleAttributeName: pghStyle};
    // 创建NSAttributedString赋值给NSButton的attributedTitle属性
    btn.attributedTitle = [[NSAttributedString alloc] initWithString:title attributes:dicAtt];
}
#pragma 打开一张图片
- (void)chooseImgBtnClicked:(NSButton *)btn
{
    if(btn.state){
    IKPictureTaker *picTake = [IKPictureTaker pictureTaker];
    [picTake setValue:false forKey:IKPictureTakerAllowsVideoCaptureKey];
    [picTake setValue:false forKey:IKPictureTakerAllowsEditingKey];
    
    [picTake beginPictureTakerWithDelegate:self
                                                 didEndSelector:@selector(pictureTakerDidEnd:returnCode:contextInfo:)
                                                    contextInfo:nil];
    }else{
        _imgView.hidden = YES;
    }
}
- (void)pictureTakerDidEnd:(IKPictureTaker *)sheet returnCode:(NSInteger)
returnCode contextInfo:(void *)contextInfo {
    NSImage *image = [sheet inputImage];
    if(image !=nil && (returnCode == NSModalResponseOK) ) {
        _imgView.hidden = NO;
        _imgView.image = image;
    }else{
        [_chooseImgBtn setState:0];
    }
}

@end

附提交过程:

git init 

git status 

git add --all

git status 

git commit -m 'Mac_02_code_keep_top project init'

git push https://github.com/ixixii/mac_02_code_top.git master 

效果如下:

github地址:https://github.com/ixixii/mac_02_code_top.git

补充一下: 如果本地重新更新了的话

先: git status看一下

然后:  git add --all

然后: git -commit -m "some function added"

接下来先: git pull https://github.com/ixixii/mac_02_code_top.git

然后: 写评论 first merge

最后: git push --set-upstream https://github.com/ixixii/mac_02_code_top.git master

注意: 如果不先pull,直接push的话,会报错:

fatal: The current branch master has no upstream branch.
To push the current branch and set the remote as upstream, use