MacOS：NSButton
一、创建
1、常见创建代码
- (void)testBtn{
NSButton *btn = [[NSButton alloc]initWithFrame:NSMakeRect(100, 100, 100, 45)];
btn.title = @"标题"; // 按钮文字
btn.image = [NSImage imageNamed:@"icon_norm"]; // 按钮图片
[btn setTarget:self];
[btn setAction:@selector(btnOnClick)]; // 按钮触发的方法
btn.alternateTitle = @"选中"; // 开启状态文字
btn.alternateImage = [NSImage imageNamed:@"icon_high"]; // 开启状态图片
btn.state = 1; // 按钮的状态
btn.imagePosition = NSImageBelow; // 图文位置
btn.imageScaling = NSImageScaleNone; // 设置图片缩放
btn.bordered = NO; // 按钮是否有边框
btn.transparent = NO; // 按钮是否透明
// 以下设置的快捷键为: Shift + Command + I (如果设置的和系统的冲突，则不会触发)
btn.keyEquivalent = @"I"; // 快捷键
[btn setKeyEquivalentModifierMask:NSEventModifierFlagShift]; // 快捷键掩码
btn.highlighted = YES; // 按钮是否为高亮
[self.window.contentView addSubview:btn];
}
2、NSButtonConvenience 分类中的类创建方法
2.1 buttonWithImage
NSButton *btn = [NSButton buttonWithImage:[NSImage imageNamed:@"pupu"] target:self action:@selector(btnOnClick:)];
btn.frame = CGRectMake(100, 100, 200, 200);
btn.wantsLayer = YES;
2.2 buttonWithTitle
NSButton *btn = [NSButton buttonWithTitle:@"123" image:[NSImage imageNamed:@"pupu"] target:self action:@selector(btnOnClick:)];
btn.frame = CGRectMake(100, 100, 100, 400);
btn.wantsLayer = YES;
二、修改image/title 的 rect
NSButton 是创建子类继承自 NSButton，然后再子button 的.m 文件中重写 titleForRect 方法； 在 cocoa 中，很多控件都需要通过重写cell 来修改内部的rect。如下：
1、创建 NaviButtonCell 继承自 NSButtonCell，在 .m 文件中设置 rect：
-(NSRect)imageRectForBounds:(NSRect)rect{
return NSMakeRect(13, 10, 9, 9);
}
-(NSRect)titleRectForBounds:(NSRect)rect{
return NSMakeRect(24, 0, rect.size.width - 24, rect.size.height);
}
2、创建 NaviButton 继承自 NSButton，在 .m 中设置 cellClass:
@implementation NaviButton
- (void)drawRect:(NSRect)dirtyRect {
[super drawRect:dirtyRect];
// Drawing code here.
}
+(Class)cellClass{
return [NaviButtonCell class];
}
@end
三、实用 category
1、一个简单地没有边框的按钮
- (void)msCommonSetting{
[self msSetLayerColor:[NSColor clearColor]];
[self setBezelStyle:NSBezelStyleRoundRect];
self.bordered = NO;
self.imagePosition = NSImageLeft;
}
2、纯图片按钮
- (void)msPureImageBtn:(NSImage *)image{
[self msCommonSetting];
[self setImage:image];
self.imageScaling = NSImageScaleNone;
self.imagePosition = NSImageOnly;
}
3、设置按钮文字颜色
- (void)msSetButtonTitle:(NSString *)title color:(NSColor*)color{
if(color ==nil) {
color = kColor_TextBlack;
}
NSFont *font = self.font;
NSDictionary *attrs = [NSDictionary dictionaryWithObjectsAndKeys:font,
NSFontAttributeName,
color,
NSForegroundColorAttributeName,
nil];
NSAttributedString* attributedString = [[NSAttributedString alloc] initWithString:title attributes:attrs];
[self setAttributedTitle:attributedString];
}
4、按钮文字居中
//文字居中
- (void)msSetButtonCenterTitle:(NSString *)title color:(NSColor*)color{
if(color ==nil) {
color = kColor_TextBlack;
}
NSFont *font = self.font;
NSMutableParagraphStyle *centredStyle = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
[centredStyle setAlignment:NSCenterTextAlignment];
NSDictionary *attrs = [NSDictionary dictionaryWithObjectsAndKeys:centredStyle,NSParagraphStyleAttributeName,
font,NSFontAttributeName,
color,NSForegroundColorAttributeName,
nil];
NSAttributedString* attributedString = [[NSAttributedString alloc] initWithString:title attributes:attrs];
[self setAttributedTitle:attributedString];
}