//
// UIButton.h
// UIKit
//
// Copyright (c) 2005-2013, Apple Inc. All rights reserved.
//
@class UIImage, UIFont, UIColor, UIImageView, UILabel;
typedef NS_ENUM(NSInteger, UIButtonType) {
UIButtonTypeCustom = 0, // 无样式,用户调整
UIButtonTypeSystem NS_ENUM_AVAILABLE_IOS(7_0), // 系统标准样式
UIButtonTypeDetailDisclosure, // 圈圈 i 样式
UIButtonTypeInfoLight, // 圈圈 i 样式
UIButtonTypeInfoDark, // 圈圈 i 样式
UIButtonTypeContactAdd, // 圈圈 + 样式
UIButtonTypeRoundedRect = UIButtonTypeSystem, // 淘汰,用 UIButtonTypeSystem 替代
};
NS_CLASS_AVAILABLE_IOS(2_0) @interface UIButton : UIControl {
@private // 私有的
CFMutableDictionaryRef _contentLookup;
UIEdgeInsets _contentEdgeInsets; // 内容的内边距
UIEdgeInsets _titleEdgeInsets; // 标题的内边距
UIEdgeInsets _imageEdgeInsets; // 图片的内边距
UIImageView *_backgroundView; // 内部的背景图片控件
UIImageView *_imageView; // 内部的图片控件
UILabel *_titleView; // 内部的标题
BOOL _initialized;
UIControlState _lastDrawingControlState;
struct {
unsigned int reversesTitleShadowWhenHighlighted:1;
unsigned int adjustsImageWhenHighlighted:1;
unsigned int adjustsImageWhenDisabled:1;
unsigned int autosizeToFit:1;
unsigned int disabledDimsImage:1;
unsigned int showsTouchWhenHighlighted:1;
unsigned int buttonType:8;
unsigned int shouldHandleScrollerMouseEvent:1;
unsigned int titleFrozen:1;
} _buttonFlags;
}
+ (id)buttonWithType:(UIButtonType)buttonType;
@property(nonatomic) UIEdgeInsets contentEdgeInsets UI_APPEARANCE_SELECTOR; // 内容缩进
@property(nonatomic) UIEdgeInsets titleEdgeInsets; // 文字标题缩进
@property(nonatomic) BOOL reversesTitleShadowWhenHighlighted; // 默认 NO. 高亮时,阴影反转
@property(nonatomic) UIEdgeInsets imageEdgeInsets; // 图片缩进
@property(nonatomic) BOOL adjustsImageWhenHighlighted; // default is YES. if YES, image is drawn darker when highlighted(pressed)
@property(nonatomic) BOOL adjustsImageWhenDisabled; // default is YES. if YES, image is drawn lighter when disabled
@property(nonatomic) BOOL showsTouchWhenHighlighted; // 点击时按钮中间现实白色的高亮
@property(nonatomic,retain) UIColor *tintColor NS_AVAILABLE_IOS(5_0); // The tintColor is inherited through the superview hierarchy. See UIView for more information.
@property(nonatomic,readonly) UIButtonType buttonType;
# 设置内部子控件的属性
- (void)setTitle:(NSString *)title forState:(UIControlState)state; # 字体
- (void)setTitleColor:(UIColor *)color forState:(UIControlState)state UI_APPEARANCE_SELECTOR; #字体颜色
- (void)setTitleShadowColor:(UIColor *)color forState:(UIControlState)state UI_APPEARANCE_SELECTOR; # 阴影
- (void)setImage:(UIImage *)image forState:(UIControlState)state;
- (void)setBackgroundImage:(UIImage *)image forState:(UIControlState)state UI_APPEARANCE_SELECTOR;
- (void)setAttributedTitle:(NSAttributedString *)title forState:(UIControlState)state NS_AVAILABLE_IOS(6_0);
# 这些 getters 方法只返回一种状态的值
- (NSString *)titleForState:(UIControlState)state;
- (UIColor *)titleColorForState:(UIControlState)state;
- (UIColor *)titleShadowColorForState:(UIControlState)state;
- (UIImage *)imageForState:(UIControlState)state;
- (UIImage *)backgroundImageForState:(UIControlState)state;
- (NSAttributedString *)attributedTitleForState:(UIControlState)state NS_AVAILABLE_IOS(6_0);
# 当按钮的状态改变时,这些值会自动改变,只有get方法,只读的
@property(nonatomic,readonly,retain) NSString *currentTitle; // 可以为空
@property(nonatomic,readonly,retain) UIColor *currentTitleColor; // 默认是white(1,1) ,不能为空
@property(nonatomic,readonly,retain) UIColor *currentTitleShadowColor; // default is white(0,0.5).
@property(nonatomic,readonly,retain) UIImage *currentImage; // 可以为空
@property(nonatomic,readonly,retain) UIImage *currentBackgroundImage; // 可以为空
@property(nonatomic,readonly,retain) NSAttributedString *currentAttributedTitle NS_AVAILABLE_IOS(6_0); # 可以为空
# return title and image views. will always create them if necessary. always returns nil for system buttons
@property(nonatomic,readonly,retain) UILabel *titleLabel NS_AVAILABLE_IOS(3_0);
@property(nonatomic,readonly,retain) UIImageView *imageView NS_AVAILABLE_IOS(3_0);
#pragma - mark 自定义按钮,重写这些方法调整按钮内部子控件的尺寸
- (CGRect)backgroundRectForBounds:(CGRect)bounds;
- (CGRect)contentRectForBounds:(CGRect)bounds;
- (CGRect)titleRectForContentRect:(CGRect)contentRect;
- (CGRect)imageRectForContentRect:(CGRect)contentRect;
@end
# 已经失效
@interface UIButton(UIButtonDeprecated)
@property(nonatomic,retain) UIFont *font NS_DEPRECATED_IOS(2_0, 3_0); // 字体
@property(nonatomic) NSLineBreakMode lineBreakMode NS_DEPRECATED_IOS(2_0, 3_0); //
@property(nonatomic) CGSize titleShadowOffset NS_DEPRECATED_IOS(2_0, 3_0);
@end