mirror of https://github.com/axmolengine/axmol.git
157 lines
4.5 KiB
Plaintext
157 lines
4.5 KiB
Plaintext
/****************************************************************************
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Copyright (c) 2010-2012 cocos2d-x.org
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Copyright (c) 2012 James Chen
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Copyright (c) 2015 Mazyad Alabduljaleel
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Copyright (c) 2017-2018 Xiamen Yaji Software Co., Ltd.
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https://axmolengine.github.io/
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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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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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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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****************************************************************************/
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#import "ui/UIEditBox/iOS/CCUIMultilineTextField.h"
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#include "base/CCDirector.h"
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/**
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* http://stackoverflow.com/questions/1328638/placeholder-in-uitextview
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*/
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CGFloat const UI_PLACEHOLDER_TEXT_CHANGED_ANIMATION_DURATION = 0.25;
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@implementation CCUIMultilineTextField
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#pragma mark - Init & Dealloc
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- (instancetype)initWithFrame:(CGRect)frame
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{
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self = [super initWithFrame:frame];
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if (self)
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{
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(textChanged:)
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name:UITextViewTextDidChangeNotification
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object:nil];
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}
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return self;
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}
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- (void)dealloc
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{
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[[NSNotificationCenter defaultCenter] removeObserver:self];
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[_placeHolderLabel release];
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[super dealloc];
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}
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#pragma mark - Properties
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- (NSString*)placeholder
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{
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return self.placeHolderLabel.text;
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}
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- (void)setPlaceholder:(NSString*)placeholder
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{
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self.placeHolderLabel.text = placeholder;
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[self.placeHolderLabel sizeToFit];
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}
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- (void)setText:(NSString*)text
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{
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[super setText:text];
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[self textChanged:nil];
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}
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- (UILabel*)placeHolderLabel
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{
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if (_placeHolderLabel == nil)
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{
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auto glView = ax::Director::getInstance()->getOpenGLView();
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float padding = AX_EDIT_BOX_PADDING * glView->getScaleX() / glView->getContentScaleFactor();
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_placeHolderLabel =
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[[UILabel alloc] initWithFrame:CGRectMake(padding, padding, self.bounds.size.width - padding * 2, 0)];
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_placeHolderLabel.lineBreakMode = NSLineBreakByWordWrapping;
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_placeHolderLabel.numberOfLines = 0;
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_placeHolderLabel.font = self.font;
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_placeHolderLabel.backgroundColor = [UIColor clearColor];
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_placeHolderLabel.textColor = [UIColor lightGrayColor];
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_placeHolderLabel.alpha = 0;
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[self addSubview:_placeHolderLabel];
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}
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return _placeHolderLabel;
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}
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#pragma mark - Public methods
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- (CGRect)textRectForBounds:(CGRect)bounds
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{
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auto glView = ax::Director::getInstance()->getOpenGLView();
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float padding = AX_EDIT_BOX_PADDING * glView->getScaleX() / glView->getContentScaleFactor();
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return CGRectInset(bounds, padding, padding);
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}
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- (CGRect)editingRectForBounds:(CGRect)bounds
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{
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return [self textRectForBounds:bounds];
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}
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- (void)layoutSubviews
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{
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[super layoutSubviews];
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if (self.placeholder.length > 0)
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{
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[self sendSubviewToBack:self.placeHolderLabel];
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}
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}
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- (void)drawRect:(CGRect)rect
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{
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if (self.text.length == 0 && self.placeholder.length > 0)
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{
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self.placeHolderLabel.alpha = 1;
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}
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[super drawRect:rect];
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}
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#pragma mark - NSNotification Observers
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- (void)textChanged:(NSNotification*)notification
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{
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if (self.placeholder.length == 0)
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{
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return;
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}
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[UIView animateWithDuration:UI_PLACEHOLDER_TEXT_CHANGED_ANIMATION_DURATION
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animations:^{
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CGFloat alpha = (self.text.length == 0 ? 1 : 0);
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self.placeHolderLabel.alpha = alpha;
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}];
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}
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@end
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