iOS开发UI基础—transframe属性（形变）

  1 //
  2 //  YYViewController.m
  3 //  01-练习使用按钮的frame和center属性
  4 //
  5 //  Created by apple on 14-5-21.
  6 //  Copyright (c) 2014年 itcase. All rights reserved.
  7 //
  8 
  9 #import "YYViewController.h"
 10 
 11 //私有扩展
 12 @interface YYViewController ()
 13 
 14 @property(nonatomic,weak)IBOutlet UIButton *headImageView;
 15 @end
 16 
 17 @implementation YYViewController
 18 
 19 //枚举类型，从1开始
 20 //枚举类型有一个很大的作用，就是用来代替程序中的魔法数字
 21 typedef enum
 22 {
 23     ktopbtntag=1,
 24     kdownbtntag,
 25     krightbtntag,
 26     kleftbtntag
 27 }btntag;
 28 
 29 //viewDidLoad是视图加载完成后调用的方法，通常在此方法中执行视图控制器的初始化工作
 30 - (void)viewDidLoad
 31 {
 32     
 33     //在viewDidLoad方法中，不要忘记调用父类的方法实现
 34     [super viewDidLoad];
 35 
 36     
 37     //手写控件代码
 38     //一、写一个按钮控件，上面有一张图片
 39     
 40     //1.使用类创建一个按钮对象
 41    // UIButton *headbtn=[[UIButton alloc] initWithFrame:CGRectMake(100 ,100, 100, 100)];
 42     //设置按钮对象为自定义型
 43     UIButton *headbtn=[UIButton buttonWithType:UIButtonTypeCustom];
 44     
 45     //2.设置对象的各项属性
 46     
 47     //(1)位置等通用属性设置
 48     headbtn.frame=CGRectMake(100, 100, 100, 100);
 49     
 50     //(2)设置普通状态下按钮的属性
 51     [headbtn setBackgroundImage:[UIImage imageNamed:@"i"] forState:UIControlStateNormal];
 52     [headbtn setTitle:@"点我！" forState:UIControlStateNormal];
 53     [headbtn setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
 54     
 55     //(3)设置高亮状态下按钮的属性
 56     [headbtn setBackgroundImage:[UIImage imageNamed:@"a"] forState:UIControlStateHighlighted];
 57     [headbtn setTitle:@"还行吧~" forState:UIControlStateHighlighted];
 58     [headbtn setTitleColor:[UIColor blueColor] forState:UIControlStateHighlighted];
 59     
 60     //3.把对象添加到视图中展现出来
 61     [self.view addSubview:headbtn];
 62     //注意点！
 63     self.headImageView=headbtn;
 64 
 65     
 66     //二、写四个控制图片左右上下移动方向的按钮控件
 67     
 68     /**================向上的按钮=====================*/
 69     //1.创建按钮对象
 70     UIButton *topbtn=[UIButton buttonWithType:UIButtonTypeCustom];
 71     
 72     //2.设置对象的属性
 73     topbtn.frame=CGRectMake(100, 250, 40, 40);
 74     [topbtn setBackgroundImage:[UIImage imageNamed:@"top_normal"] forState:UIControlStateNormal];
 75     [topbtn setBackgroundImage:[UIImage imageNamed:@"top_highlighted"] forState:UIControlStateHighlighted];
 76     [topbtn setTag:1];
 77     //3.把控件添加到视图中
 78     [self.view addSubview:topbtn];
 79     
 80     //4.按钮的单击控制事件
 81     [topbtn addTarget:self action:@selector(Click:) forControlEvents:UIControlEventTouchUpInside];
 82     
 83     
 84       /**================向下的按钮=====================*/
 85     //1.创建按钮对象
 86     UIButton *downbtn=[UIButton buttonWithType:UIButtonTypeCustom];
 87     //2.设置对象的属性
 88     downbtn.frame=CGRectMake(100, 350, 40, 40);
 89     [downbtn setBackgroundImage:[UIImage imageNamed:@"bottom_normal"] forState:UIControlStateNormal];
 90     [downbtn setBackgroundImage:[UIImage imageNamed:@"bottom_highlighted"] forState:UIControlStateHighlighted];
 91     [downbtn setTag:2];
 92     //3.把控件添加到视图中
 93     [self.view addSubview:downbtn];
 94     
 95     //4.按钮的单击控制事件
 96     [downbtn addTarget:self action:@selector(Click:) forControlEvents:UIControlEventTouchUpInside];
 97 
 98     
 99      /**================向左的按钮=====================*/
100     //1.创建按钮对象
101     UIButton *leftbtn=[UIButton buttonWithType:UIButtonTypeCustom];
102     //2.设置对象的属性
103     leftbtn.frame=CGRectMake(50, 300, 40, 40);
104     [leftbtn setBackgroundImage:[UIImage imageNamed:@"left_normal"] forState:UIControlStateNormal];
105     [leftbtn setBackgroundImage:[UIImage imageNamed:@"left_highlighted"] forState:UIControlStateHighlighted];
106     [leftbtn setTag:4];
107     //3.把控件添加到视图中
108     [self.view addSubview:leftbtn];
109     
110     //4.按钮的单击控制事件
111     [leftbtn addTarget:self action:@selector(Click:) forControlEvents:UIControlEventTouchUpInside];
112     
113     
114     
115     /**================向右的按钮=====================*/
116     //1.创建按钮对象
117     UIButton *rightbtn=[UIButton buttonWithType:UIButtonTypeCustom];
118     //2.设置对象的属性
119     rightbtn.frame=CGRectMake(150, 300, 40, 40);
120     [rightbtn setBackgroundImage:[UIImage imageNamed:@"right_normal"] forState:UIControlStateNormal];
121     [rightbtn setBackgroundImage:[UIImage imageNamed:@"right_highlighted"] forState:UIControlStateHighlighted];
122     [rightbtn setTag:3];
123     //3.把控件添加到视图中
124     [self.view addSubview:rightbtn];
125     
126     //4.按钮的单击控制事件
127     [rightbtn addTarget:self action:@selector(Click:) forControlEvents:UIControlEventTouchUpInside];
128     
129       //三、写两个缩放按钮
130        /**================放大的按钮=====================*/
131     //1.创建对象
132     UIButton *plusbtn=[UIButton buttonWithType:UIButtonTypeCustom];
133     //2.设置属性
134     plusbtn.frame=CGRectMake(75, 400, 40, 40);
135     [plusbtn setBackgroundImage:[UIImage imageNamed:@"plus_normal"] forState:UIControlStateNormal];
136     [plusbtn setBackgroundImage:[UIImage imageNamed:@"plus_highlighted"] forState:UIControlStateHighlighted];
137     [plusbtn setTag:1];
138     //3.添加到视图
139     [self.view addSubview:plusbtn];
140     //4.单击事件
141     [plusbtn addTarget:self action:@selector(Zoom:) forControlEvents:UIControlEventTouchUpInside];
142     
143     
144     /**================缩小的按钮=====================*/
145     UIButton *minusbtn=[UIButton buttonWithType:UIButtonTypeCustom];
146     minusbtn.frame=CGRectMake(125, 400, 40, 40);
147     [minusbtn setBackgroundImage:[UIImage imageNamed:@"minus_normal"] forState:UIControlStateNormal];
148     [minusbtn setBackgroundImage:[UIImage imageNamed:@"minus_highlighted"] forState:UIControlStateHighlighted];
149     [minusbtn setTag:0];
150     [self.view addSubview:minusbtn];
151     [minusbtn addTarget:self action:@selector(Zoom:) forControlEvents:UIControlEventTouchUpInside];
152     
153     /**================向左旋转按钮=====================*/
154     UIButton *leftrotatebtn=[UIButton buttonWithType:UIButtonTypeCustom];
155     [leftrotatebtn setFrame:CGRectMake(175, 400, 40, 40)];
156     [leftrotatebtn setBackgroundImage:[UIImage imageNamed:@"left_rotate_normal"] forState:UIControlStateNormal];
157     [leftrotatebtn setBackgroundImage:[UIImage imageNamed:@"left_rotate_highlighted"] forState:UIControlStateHighlighted];
158     [leftrotatebtn setTag:1];
159     [self.view addSubview:leftrotatebtn];
160     [leftrotatebtn addTarget:self action:@selector(Rotate:) forControlEvents:UIControlEventTouchUpInside];
161     
162     /**================向右旋转按钮=====================*/
163     UIButton *rightrotatebtn=[UIButton buttonWithType:UIButtonTypeCustom];
164     [rightrotatebtn setFrame:CGRectMake(225, 400, 40, 40)];
165     [rightrotatebtn setBackgroundImage:[UIImage imageNamed:@"right_rotate_normal"] forState:UIControlStateNormal];
166     [rightrotatebtn setBackgroundImage:[UIImage imageNamed:@"right_rotate_highlighted"] forState:UIControlStateHighlighted];
167     [rightbtn setTag:0];
168     [self.view addSubview:rightrotatebtn];
169     [rightrotatebtn addTarget:self action:@selector(Rotate:) forControlEvents:UIControlEventTouchUpInside];
170 }
171 
172 //控制方向的多个按钮调用同一个方法
173 -(void)Click:(UIButton *)button
174 {
175 
176     //练习使用frame属性
177     //CGRect frame=self.headImageView.frame;
178     
179     /**注意，这里如果控制位置的两个属性frame和center同时使用的话，会出现很好玩的效果，注意分析*/
180     //练习使用center属性
181     CGPoint center=self.headImageView.center;
182     switch (button.tag) {
183         case ktopbtntag:
184             center.y-=30;
185             break;
186         case kdownbtntag:
187             center.y+=30;
188             break;
189         case kleftbtntag:
190             //发现一个bug,之前的问题是因为少写了break,造成了它们的顺序执行，sorry
191            //center.x=center.x-30;
192             center.x-=50;
193             break;
194         case krightbtntag:
195             center.x+=50;
196             break;
197     }
198     
199  //  self.headImageView.frame=frame;
200     
201     //首尾式设置动画效果
202     [UIView beginAnimations:nil context:nil];
203     self.headImageView.center=center;
204     //设置时间
205     [UIView setAnimationDuration:2.0];
206     [UIView commitAnimations];
207     NSLog(@"移动!");
208     
209 }
210 -(void)Zoom:(UIButton *)btn
211 {
212     //使用bounds，以中心点位原点进行缩放
213     CGRect bounds = self.headImageView.bounds;
214     if (btn.tag) {
215         bounds.size.height+=30;
216         bounds.size.width+=30;
217     }
218     else
219     {
220         bounds.size.height-=50;
221         bounds.size.width-=50;
222     }
223     
224     //设置首尾动画
225     [UIView beginAnimations:nil context:nil];
226     self.headImageView.bounds=bounds;
227     [UIView setAnimationDuration:2.0];
228     [UIView commitAnimations];
229 }
230 
231 -(void)Rotate:(UIButton *)rotate
232 {
233     //位移（不累加）
234     //self.headImageView.transform=CGAffineTransformMakeTranslation(50, 200);
235     //缩放
236     //self.headImageView.transform=CGAffineTransformMakeScale(1.2, 10);
237     //在原有的基础上位移（是累加的）
238     //self.headImageView.transform=CGAffineTransformTranslate(self.headImageView.transform, 50, 50);
239     //在原有的基础上进行缩放
240     //self.headImageView.transform=CGAffineTransformScale(self.headImageView.transform, 1.5, 1.6);
241     
242     //在原有的基础上进行旋转
243     if (rotate.tag) {
244         //旋转角度为1/pi，逆时针
245         self.headImageView.transform=CGAffineTransformRotate(self.headImageView.transform, -M_1_PI);
246     }
247     else
248     {
249         //旋转的角度为pi/2，顺时针
250     self.headImageView.transform=CGAffineTransformRotate(self.headImageView.transform, M_PI_2);
251     }
252     
253 }
254 @end