1 //
2 // LWTViewController.m
3 // 纯代码位移和伸缩作业
4 //
5 // Created by apple on 14-5-20.
6 // Copyright (c) 2014年 lwt. All rights reserved.
7 //
8
9 #import "LWTViewController.h"
10 #pragma mark 定义常量
11 /** 图片距离顶部的高度 */
12 #define KImageY 60
13 /** 图片的尺寸 */
14 #define KImageWidth 100
15 /** 按钮的尺寸 */
16 #define KMoveButton 40
17 /** 图片平移的距离 */
18 #define KMovingDelta 20
19
20 /** 定义平移tag的枚举 */
21 typedef enum {
22 KMoveDirTop = 1,
23 KMoveDirLeft,
24 KMoveDirBottom,
25 KMoveDirRight
26 } KMoveDir;
27
28 @interface LWTViewController ()
29
30 /** 图片的属性 */
31 @property (nonatomic, strong) UIButton *imageView;
32
33 /** 平移按钮的属性 */
34 @property (nonatomic, strong) UIButton *topBtn;
35 @property (nonatomic, strong) UIButton *leftBtn;
36 @property (nonatomic, strong) UIButton *bottomBtn;
37 @property (nonatomic, strong) UIButton *rightBtn;
38
39 @end
40
41 @implementation LWTViewController
42
43
44 - (void)viewDidLoad
45 {
46 [super viewDidLoad];
47 // Do any additional setup after loading the view, typically from a nib.
48
49 // 创建要移动的图片按钮
50 UIButton *imageViewButton = [[UIButton alloc] init];
51 // 按钮位置
52 CGFloat imageX = (self.view.frame.size.width - KImageWidth) / 2;
53 imageViewButton.frame = CGRectMake(imageX, KImageY, KImageWidth, KImageWidth);
54
55 // 按钮默认背景
56 UIImage *image = [UIImage imageNamed:@"btn_01"];
57 [imageViewButton setBackgroundImage:image forState:UIControlStateNormal];
58
59 // 按钮默认文字
60 [imageViewButton setTitle:@"点我啊" forState:UIControlStateNormal];
61 [imageViewButton setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
62
63 // 按钮高亮背景
64 UIImage *imageHighed = [UIImage imageNamed:@"btn_02"];
65 [imageViewButton setBackgroundImage:imageHighed forState:UIControlStateHighlighted];
66
67 // 按钮高亮文字
68 [imageViewButton setTitle:@"点我干啥" forState:UIControlStateHighlighted];
69 [imageViewButton setTitleColor:[UIColor magentaColor] forState:UIControlStateHighlighted];
70
71 [self.view addSubview:imageViewButton];
72
73 _imageView = imageViewButton;
74
75 // 创建移动按钮
76
77 // 上
78 UIButton *topButton = [self createButton:@"top" andTag:KMoveDirTop andPoint:CGPointMake(60, 320)];
79 // 监听点击事件
80 [topButton addTarget:self action:@selector(move:) forControlEvents:UIControlEventTouchUpInside];
81 // 属性赋值
82 self.topBtn = topButton;
83
84 //左
85 UIButton *leftButton = [self createButton:@"left" andTag:KMoveDirLeft andPoint:CGPointMake(20, 360)];
86 // 监听点击事件
87 [leftButton addTarget:self action:@selector(move:) forControlEvents:UIControlEventTouchUpInside];
88 // 属性赋值
89 self.leftBtn = leftButton;
90
91 //下
92 UIButton *bottomButton = [self createButton:@"bottom" andTag:KMoveDirBottom andPoint:CGPointMake(60, 400)];
93 // 监听点击事件
94 [bottomButton addTarget:self action:@selector(move:) forControlEvents:UIControlEventTouchUpInside];
95 // 属性赋值
96 self.bottomBtn = bottomButton;
97
98 //右
99 UIButton *rightButton = [self createButton:@"right" andTag:KMoveDirRight andPoint:CGPointMake(100, 360)];
100 // 监听点击事件
101 [rightButton addTarget:self action:@selector(move:) forControlEvents:UIControlEventTouchUpInside];
102 // 属性赋值
103 self.rightBtn = rightButton;
104
105 // 创建伸缩按钮
106 // 放大
107 UIButton *plusButton = [self createButton:@"plus" andTag:1 andPoint:CGPointMake(180, 320)];
108 // 监听点击事件
109 [plusButton addTarget:self action:@selector(scale:) forControlEvents:UIControlEventTouchUpInside];
110
111 // 缩小
112 UIButton *minusButton = [self createButton:@"minus" andTag:0 andPoint:CGPointMake(240, 320)];
113 // 监听点击事件
114 [minusButton addTarget:self action:@selector(scale:) forControlEvents:UIControlEventTouchUpInside];
115
116 // 创建旋转按钮
117 //逆时针
118 UIButton *leftRotateButton = [self createButton:@"left_rotate" andTag:-1 andPoint:CGPointMake(180, 400)];
119 // 监听点击事件
120 [leftRotateButton addTarget:self action:@selector(rotate:) forControlEvents:UIControlEventTouchUpInside];
121
122 //顺时针
123 UIButton *rightRotateButton = [self createButton:@"right_rotate" andTag:1 andPoint:CGPointMake(240, 400)];
124 // 监听点击事件
125 [rightRotateButton addTarget:self action:@selector(rotate:) forControlEvents:UIControlEventTouchUpInside];
126
127 }
128
129 #pragma mark - 实现方法
130 /** 创建按钮 默认和高亮的图片名称相近，x，y是位置是手动布局的 */
131 - (UIButton *) createButton:(NSString *)location andTag: (int)tag andPoint : (CGPoint)point
132 {
133 UIButton *btn = [[UIButton alloc] init];
134
135 btn.frame = (CGRect){point,KMoveButton, KMoveButton};
136 // 背景
137 NSString *normal = [NSString stringWithFormat:@"%@_normal",location];
138 UIImage *upImage = [UIImage imageNamed:normal];
139 [btn setBackgroundImage:upImage forState:UIControlStateNormal];
140
141 //高亮背景
142 NSString *highlighted = [NSString stringWithFormat:@"%@_highlighted",location];
143 UIImage *upImageHighed = [UIImage imageNamed:highlighted];
144 [btn setBackgroundImage:upImageHighed forState:UIControlStateHighlighted];
145 // tag
146 btn.tag = tag;
147 [self.view addSubview:btn];
148 return btn;
149 }
150
151
152 /** 创建动画效果 */
153 - (void) makeAnimation : (void (^)())block
154 {
155 [UIView beginAnimations:nil context:nil];
156 [UIView setAnimationDuration:1.0];
157
158 block();
159
160 [UIView commitAnimations];
161 }
162
163 /** 平移方法 */
164 - (void) move : (UIButton *)button
165 {
166 [self makeAnimation:^{
167
168 // 判断平移方向
169 switch (button.tag) {
170 case KMoveDirTop: // 上
171
172 self.imageView.transform = CGAffineTransformTranslate(self.imageView.transform, 0, -KMovingDelta);
173 // // 不能超过屏幕
174 // if (self.imageView.frame.origin.y < 0) {
175 // CGRect tempFrame = self.imageView.frame;
176 // tempFrame.origin.y = 0;
177 // self.imageView.frame = tempFrame;
178 // }
179 break;
180 case KMoveDirLeft: // 左
181
182 self.imageView.transform = CGAffineTransformTranslate(self.imageView.transform, -KMovingDelta, 0);
183 // // 不能超过屏幕
184 // if (self.imageView.frame.origin.x < 0) {
185 // CGRect tempFrame = self.imageView.frame;
186 // tempFrame.origin.x = 0;
187 // self.imageView.frame = tempFrame;
188 // }
189 break;
190 case KMoveDirBottom: // 下
191
192 self.imageView.transform = CGAffineTransformTranslate(self.imageView.transform, 0, KMovingDelta);
193 // // 不能超过屏幕
194 // if (self.imageView.frame.origin.y > (self.view.frame.size.height -KImageWidth)) {
195 // CGRect tempFrame = self.imageView.frame;
196 // tempFrame.origin.y = self.view.frame.size.height -KImageWidth;
197 // self.imageView.frame = tempFrame;
198 // }
199 break;
200 case KMoveDirRight: // 右
201
202 self.imageView.transform = CGAffineTransformTranslate(self.imageView.transform, KMovingDelta, 0);
203 // // 不能超过屏幕
204 // if (self.imageView.frame.origin.x > (self.view.frame.size.width - KImageWidth)) {
205 // CGRect tempFrame = self.imageView.frame;
206 // tempFrame.origin.x = self.view.frame.size.width - KImageWidth;
207 // self.imageView.frame = tempFrame;
208 // }
209 break;
210 }
211
212 // // 平移到与屏幕重合则无法点击按钮 不用三目运算符则会出现一直无法点击事件
213 // self.topBtn.enabled = self.imageView.frame.origin.y ? 1 : 0;
214 // self.leftBtn.enabled = self.imageView.frame.origin.x ? 1 : 0;
215 // self.bottomBtn.enabled = self.imageView.frame.origin.y - (self.view.frame.size.height -KImageWidth) ? 1 : 0;
216 // self.rightBtn.enabled = self.imageView.frame.origin.x - (self.view.frame.size.width - KImageWidth) ? 1 : 0;
217
218 }];
219
220 }
221
222 /** 伸缩方法 */
223 - (void) scale : (UIButton *)button
224 {
225 [self makeAnimation:^{
226 // 判断放大缩小
227 CGFloat scale = button.tag ? 1.2 : 0.8;
228
229 self.imageView.transform = CGAffineTransformScale(self.imageView.transform, scale, scale);
230 }];
231 }
232
233 /** 旋转方法 */
234 - (void) rotate : (UIButton *)button
235 {
236 [self makeAnimation:^{
237 CGFloat rotate = M_PI_4 * button.tag;
238 self.imageView.transform = CGAffineTransformRotate(self.imageView.transform, rotate);
239 }];
240
241 }
242
243
244 - (void)didReceiveMemoryWarning
245 {
246 [super didReceiveMemoryWarning];
247 // Dispose of any resources that can be recreated.
248 }
249
250 @end
如果有人看到的话，麻烦你教教我transform不用frame如何设置不能超出屏幕，而且旋转后移动要边上图片会丢失。请指教，谢谢！！！
纯代码transform位移伸缩和旋转,布布扣,bubuko.com
时间： 2024-12-08 06:44:35