// // HPTextViewInternal.m // // Created by Hans Pinckaers on 29-06-10. // // MIT License // // Copyright (c) 2011 Hans Pinckaers // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. #import "HPTextViewInternal.h" @implementation HPTextViewInternal @synthesize placeholder; @synthesize placeholderColor; @synthesize displayPlaceHolder; - (void)setText:(NSString *)text { BOOL originalValue = self.scrollEnabled; // If one of GrowingTextView's superviews is a scrollView, and self.scrollEnabled == NO, // setting the text programatically will cause UIKit to search upwards until it finds a scrollView with // scrollEnabled==yes // then scroll it erratically. Setting scrollEnabled temporarily to YES prevents this. [self setScrollEnabled:YES]; [super setText:text]; [self setScrollEnabled:originalValue]; } - (void)setScrollable:(BOOL)isScrollable { [super setScrollEnabled:isScrollable]; } - (void)setContentOffset:(CGPoint)s { if (self.tracking || self.decelerating) { // initiated by user... UIEdgeInsets insets = self.contentInset; insets.bottom = 0; insets.top = 0; self.contentInset = insets; } else { float bottomOffset = (self.contentSize.height - self.frame.size.height + self.contentInset.bottom); if (s.y < bottomOffset && self.scrollEnabled) { UIEdgeInsets insets = self.contentInset; insets.bottom = 8; insets.top = 0; self.contentInset = insets; } } [super setContentOffset:s]; } - (void)setContentInset:(UIEdgeInsets)s { UIEdgeInsets insets = s; if (s.bottom > 8) insets.bottom = 0; insets.top = 0; [super setContentInset:insets]; } - (void)setContentSize:(CGSize)contentSize { // is this an iOS5 bug? Need testing! if (self.contentSize.height > contentSize.height) { UIEdgeInsets insets = self.contentInset; insets.bottom = 0; insets.top = 0; self.contentInset = insets; } [super setContentSize:contentSize]; } - (void)drawRect:(CGRect)rect { [super drawRect:rect]; if (displayPlaceHolder && placeholder && placeholderColor) { [placeholderColor set]; [placeholder drawInRect:CGRectMake(8.0f, 8.0f, self.frame.size.width - 16.0f, self.frame.size.height - 16.0f) withFont:self.font]; } } @end