//
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// ZFFloatView.m
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// ZFPlayer
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//
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// Copyright (c) 2016年 任子丰 ( http://github.com/renzifeng )
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#import "ZFFloatView.h"
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@implementation ZFFloatView
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- (instancetype)initWithFrame:(CGRect)frame {
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self = [super initWithFrame:frame];
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if (self) {
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[self initilize];
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}
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return self;
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}
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- (instancetype)initWithCoder:(NSCoder *)aDecoder{
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self = [super initWithCoder:aDecoder];
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if (self) {
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[self initilize];
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}
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return self;
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}
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- (void)initilize {
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self.safeInsets = UIEdgeInsetsMake(0, 0, 0, 0);
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UIPanGestureRecognizer *panGestureRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(doMoveAction:)];
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[self addGestureRecognizer:panGestureRecognizer];
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}
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- (void)setParentView:(UIView *)parentView {
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_parentView = parentView;
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[parentView addSubview:self];
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}
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#pragma mark - Action
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- (void)doMoveAction:(UIPanGestureRecognizer *)recognizer {
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/// The position where the gesture is moving in the self.view.
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CGPoint translation = [recognizer translationInView:self.parentView];
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CGPoint newCenter = CGPointMake(recognizer.view.center.x + translation.x,
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recognizer.view.center.y + translation.y);
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// Limited screen range:
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// Top margin limit.
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newCenter.y = MAX(recognizer.view.frame.size.height/2 + self.safeInsets.top, newCenter.y);
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// Bottom margin limit.
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newCenter.y = MIN(self.parentView.frame.size.height - self.safeInsets.bottom - recognizer.view.frame.size.height/2, newCenter.y);
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// Left margin limit.
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newCenter.x = MAX(recognizer.view.frame.size.width/2, newCenter.x);
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// Right margin limit.
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newCenter.x = MIN(self.parentView.frame.size.width - recognizer.view.frame.size.width/2,newCenter.x);
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// Set the center point.
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recognizer.view.center = newCenter;
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// Set the gesture coordinates to 0, otherwise it will add up.
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[recognizer setTranslation:CGPointZero inView:self.parentView];
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}
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@end
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