UI基础_transform

#import "ViewController.h"

typedef enum

{

ButtonTypeLeft = 1,

ButtonTypeRight,

ButtonTypeUp,

ButtonTypeDown,

ButtonTypeRotleL,

ButtonTypeRotleR,

ButtonTypeScaleUp,

ButtonTypeScaleDown

}ButtonType;

@interface ViewController ()

@property (strong, nonatomic) IBOutlet UIView *viewMan;

@end

@implementation ViewController

- (IBAction)buttonDirectionClicked:(UIButton *)sender

{

//获取屏幕的宽度、高度

NSInteger screenWidth = self.view.frame.size.width;

NSInteger screenHeight = self.view.frame.size.height;

//获取viewMain的位置信息

CGRect rect = self.viewMan.frame;

//设置移动的尺寸

NSInteger offSet = 10;

switch (sender.tag) {

case ButtonTypeLeft:

rect.origin.x -= offSet;

if (rect.origin.x <= -rect.size.width ) {

rect.origin.x = screenWidth;

}

break;

case ButtonTypeRight:

rect.origin.x += offSet;

if (rect.origin.x >= screenWidth) {

rect.origin.x = -rect.size.width;

}

break;

case ButtonTypeUp:

rect.origin.y -= offSet;

if (rect.origin.y <= -rect.size.height) {

rect.origin.y = screenHeight;

}

break;

case ButtonTypeDown:

rect.origin.y += offSet;

if (rect.origin.y >= screenHeight) {

rect.origin.y = -rect.size.height;

}

break;

}

self.viewMan.frame = rect;

}

- (IBAction)buttonRotale:(UIButton *)sender

{

CGAffineTransform form = self.viewMan.transform;

switch (sender.tag) {

case ButtonTypeRotleL:

form = CGAffineTransformRotate(form, -M_2_PI/2);

break;

case ButtonTypeRotleR:

form = CGAffineTransformRotate(form, M_2_PI/2);

default:

break;

}

self.viewMan.transform = form;

}

- (IBAction)buttonScale:(UIButton *)sender

{

CGAffineTransform form = self.viewMan.transform;

CGFloat scaleFator = 0.0f;

switch (sender.tag) {

case ButtonTypeScaleUp:

scaleFator = 1.5;

break;

case ButtonTypeScaleDown:

scaleFator = 0.5;

}

form = CGAffineTransformScale(form, scaleFator, scaleFator);

self.viewMan.transform = form;

}

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end