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+//
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+// HomeDragButton.m
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+// KulexiuForStudent
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+//
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+// Created by 王智 on 2022/10/19.
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+//
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+
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+#import "HomeDragButton.h"
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+
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+#define WIDTH (self.frame.size.width)
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+#define HEIGHT (self.frame.size.height)
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+
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+@interface HomeDragButton ()<UIGestureRecognizerDelegate>
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+
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+@property (nonatomic, assign) UIInterfaceOrientation currentOrientation;
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+
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+@property (nonatomic, copy) HomeDragButtonDetail callback;
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+
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+@end
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+
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+@implementation HomeDragButton
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+
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+- (instancetype)initWithFrame:(CGRect)frame {
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+ if (self = [super initWithFrame:frame]) {
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+ self.backgroundColor = [UIColor clearColor];
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+ [self addSubview:self.containerView];
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+ self.containerView.frame = CGRectMake(0, 0, frame.size.width, frame.size.height);
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+ UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc]initWithTarget:self action:@selector(locationChange:)];
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+ pan.delaysTouchesBegan = YES;
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+ [self addGestureRecognizer:pan];
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+ self.currentOrientation = UIInterfaceOrientationPortrait;
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+ UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(click:)];
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+ [self addGestureRecognizer:tap];
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+ tap.delegate = self;
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+ }
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+ return self;
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+}
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+
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+- (void)clickAction:(HomeDragButtonDetail)callback {
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+ if (callback) {
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+ self.callback = callback;
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+ }
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+}
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+
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+//点击事件
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+-(void)click:(UITapGestureRecognizer*)tapGesture {
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+ if (self.callback) {
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+ self.callback();
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+ }
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+}
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+
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+#define KDEAISellDegreesToRadians(degrees) (degrees * M_PI / 180)
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+- (void)statusBarOrientationChange:(NSNotification*)notification{
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+ UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
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+
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+ [self setTransform:[self transformForOrientation:orientation]];
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+ self.currentOrientation = orientation;
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+
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+ CGFloat screenWidth = KPortraitWidth;
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+ CGFloat screenHeight = KPortraitHeight - kTabBarHeight;
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+ if (orientation == UIInterfaceOrientationLandscapeLeft || orientation == UIInterfaceOrientationLandscapeRight) {
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+ self.frame = CGRectMake(HomeDragButtonHeight+HomeDragButtonBottomSpace, screenWidth - HomeDragButtonWidth , HomeDragButtonWidth, HomeDragButtonHeight);
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+ }else{
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+ self.frame = CGRectMake(screenWidth - HomeDragButtonWidth, screenHeight - HomeDragButtonHeight - HomeDragButtonBottomSpace , HomeDragButtonWidth, HomeDragButtonHeight);
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+ }
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+}
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+
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+- (CGAffineTransform)transformForOrientation:(UIInterfaceOrientation)orientation {
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+
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+ switch (orientation) {
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+
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+ case UIInterfaceOrientationLandscapeLeft:
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+ return CGAffineTransformMakeRotation(-KDEAISellDegreesToRadians(90));
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+
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+ case UIInterfaceOrientationLandscapeRight:
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+ return CGAffineTransformMakeRotation(KDEAISellDegreesToRadians(90));
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+
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+ case UIInterfaceOrientationPortraitUpsideDown:
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+ return CGAffineTransformMakeRotation(KDEAISellDegreesToRadians(180));
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+
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+ case UIInterfaceOrientationPortrait:
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+ default:
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+ return CGAffineTransformMakeRotation(KDEAISellDegreesToRadians(0));
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+ }
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+}
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+
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+//改变位置
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+//横屏之后的坐标系变为左下角坐标系，其中x轴向上，y轴向右，在这样的坐标系中计算即可
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+-(void)locationChange:(UIPanGestureRecognizer*)pan {
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+
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+ if (self.currentOrientation == UIInterfaceOrientationLandscapeRight || self.currentOrientation == UIInterfaceOrientationLandscapeLeft) {//如果是横屏
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+ [self springToBoundsOnLandscape:pan];
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+
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+ } else{ //如果是竖屏
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+ [self springToBoundsOnPortrait:pan];
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+ }
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+}
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+
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+- (void)springToBoundsOnPortrait:(UIPanGestureRecognizer*)panGesture {
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+ CGFloat screenWidth = KPortraitWidth;
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+ CGFloat screenHeight = KPortraitHeight - kTabBarHeight;
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+
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+ CGPoint panPoint = [panGesture locationInView:[[UIApplication sharedApplication] windows][0]];
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+ if(panGesture.state == UIGestureRecognizerStateBegan) {
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+
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+ } else if (panGesture.state == UIGestureRecognizerStateChanged) {
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+ self.center = CGPointMake(panPoint.x, panPoint.y);
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+ } else if(panGesture.state == UIGestureRecognizerStateEnded || panGesture.state == UIGestureRecognizerStateCancelled) {
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+ NSLog(@"ss");
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+ if(panPoint.x <= screenWidth/2) {
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+ if(panPoint.y >= screenHeight-HEIGHT/2-40 ) { //左下边界判断
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+ [UIView animateWithDuration:0.2 animations:^{
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+ self.center = CGPointMake(WIDTH/2, screenHeight-HEIGHT/2);
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+ }];
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+
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+ } else if (panPoint.y < (HEIGHT/2 + STATUS_BAR_HEIGHT)) {
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+ [UIView animateWithDuration:0.2 animations:^{
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+ self.center = CGPointMake(WIDTH/2, HEIGHT/2 + STATUS_BAR_HEIGHT);
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+
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+ }];
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+ } else {
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+ [UIView animateWithDuration:0.2 animations:^{
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+ self.center = CGPointMake(WIDTH/2, panPoint.y);
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+ }];
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+ }
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+ }
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+ else if(panPoint.x > screenWidth/2) {
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+ if(panPoint.y <= (HEIGHT/2 + STATUS_BAR_HEIGHT)) {//向右越过上边界
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+
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+ [UIView animateWithDuration:0.2 animations:^{
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+ self.center = CGPointMake(screenWidth-WIDTH/2, HEIGHT/2 + STATUS_BAR_HEIGHT);
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+ }];
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+
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+ }
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+ else if (panPoint.y > screenHeight-HEIGHT/2) { //右下边界
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+ [UIView animateWithDuration:0.2 animations:^{
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+ self.center = CGPointMake(screenWidth-WIDTH/2, screenHeight-HEIGHT/2);
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+ }];
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+
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+ }else { //正常拖动
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+ [UIView animateWithDuration:0.2 animations:^{
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+ self.center = CGPointMake(screenWidth-WIDTH/2, panPoint.y);
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+ }];
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+ }
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+ }
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+ }
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+}
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+
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+- (void)springToBoundsOnLandscape:(UIPanGestureRecognizer*)panGesture {
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+ CGFloat screenWidth = KPortraitWidth;
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+ CGFloat screenHeight = KPortraitHeight - kTabBarHeight;
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+
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+ CGPoint panPoint = [panGesture locationInView:[[UIApplication sharedApplication] windows][0]];
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+ panPoint = CGPointMake(screenHeight - panPoint.y, panPoint.x);
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+
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+ NSLog(@"screenWidth:%f, panPoint:%@", screenWidth, NSStringFromCGPoint(panPoint));
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+
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+ if(panGesture.state == UIGestureRecognizerStateBegan) {
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+ } else if (panGesture.state == UIGestureRecognizerStateChanged) {
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+ self.center = CGPointMake(panPoint.x, panPoint.y);
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+ } else if(panGesture.state == UIGestureRecognizerStateEnded || panGesture.state == UIGestureRecognizerStateCancelled) {
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+ if(panPoint.y <= screenWidth/2) {
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+ if (panPoint.x <= HEIGHT/2 + STATUS_BAR_HEIGHT) {
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+ [UIView animateWithDuration:0.2 animations:^{//左下角
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+ self.center = CGPointMake(WIDTH/2, HEIGHT/2 + STATUS_BAR_HEIGHT);
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+ }];
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+ }else if (panPoint.x >= screenHeight - HEIGHT/2){//左上角
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+ [UIView animateWithDuration:0.2 animations:^{
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+ self.center = CGPointMake(screenHeight - HEIGHT/2, HEIGHT/2 + STATUS_BAR_HEIGHT);
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+ }];
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+ }else{
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+ [UIView animateWithDuration:0.2 animations:^{
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+ self.center = CGPointMake(panPoint.x, HEIGHT/2 + STATUS_BAR_HEIGHT);
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+ }];
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+ }
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+ }
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+ else if(panPoint.y > screenWidth/2)
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+ {
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+ if (panPoint.x <= HEIGHT/2) {//右下角
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+ [UIView animateWithDuration:0.2 animations:^{
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+ self.center = CGPointMake(HEIGHT/2, screenWidth - WIDTH/2);
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+ }];
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+ }else if (panPoint.x >= screenHeight - HEIGHT/2){//右上角
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+ [UIView animateWithDuration:0.2 animations:^{
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+ self.center = CGPointMake(screenHeight - HEIGHT/2, screenWidth - WIDTH/2);
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+ }];
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+ }else{
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+ [UIView animateWithDuration:0.2 animations:^{
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+ self.center = CGPointMake(panPoint.x , screenWidth - WIDTH/2);
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+ }];
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+ }
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+ }
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+ }
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+}
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+
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+- (UIImageView *)containerView {
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+ if (!_containerView) {
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+ _containerView = [[UIImageView alloc] init];
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+ _containerView.backgroundColor = [UIColor clearColor];
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+ _containerView.contentMode = UIViewContentModeScaleAspectFill;
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+ }
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+ return _containerView;
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+}
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+
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+/*
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+// Only override drawRect: if you perform custom drawing.
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+// An empty implementation adversely affects performance during animation.
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+- (void)drawRect:(CGRect)rect {
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+ // Drawing code
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+}
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+*/
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+
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+@end
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Steven
