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GSTextViewNode.m
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GSTextViewNode.m
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/*
GSTextViewNode.m
Copyright (c) 2013 Truong Vinh Tran
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 "GSTextViewNode.h"
@implementation GSTextViewNode
#pragma mark - init methods
- (GSTextViewNode*)initNodeWithFontNamed:(NSString *)fontName{
UIColor* color = UIColor.clearColor;
self = [super initWithColor:color size:CGSizeZero];
if (self) {
//set up default values
self.fontSize = 14;
self.fontColor = [SKColor blackColor];
self.fontName = fontName;
self.spaceHeight = 14;
self.verticalMargin = 5;
}
return self;
}
- (void)setText:(NSString *)text{
//remove all childrens
if ([self.children count]>0) {
[self removeAllChildren];
}
//set text attribute
_text = text;
//split up the text into several rows
NSArray* strings = [text componentsSeparatedByString:@"\n"];
//variables to store the size
CGFloat totalheight = 0;
CGFloat maxwidth = 0;
//get every row
NSMutableArray *labels = [NSMutableArray new];
for (int i=0; i < strings.count; i++) {
//get substring
NSString *substring = [strings objectAtIndex:i];
//substring is not empty
if (![substring isEqualToString:@""]) {
SKLabelNode *rowText = [SKLabelNode labelNodeWithFontNamed:_fontName];
rowText.text = substring;
rowText.fontColor = _fontColor;
rowText.fontSize = _fontSize;
const CGSize LABEL_SIZE = [rowText calculateAccumulatedFrame].size;
if (LABEL_SIZE.width > maxwidth) {
maxwidth = LABEL_SIZE.width;
}
//increase the row height
totalheight +=LABEL_SIZE.height;
//add new label
[labels addObject:rowText];
}else{
//empty string
totalheight += _spaceHeight;
[labels addObject:[NSNull null]];
}
if (i + 1 < strings.count)
totalheight += _verticalMargin;
}
self.size = CGSizeMake(maxwidth, totalheight);
CGFloat y = totalheight * 0.5;
//add every row to the scene
for (NSUInteger i = 0; i < strings.count; i++) {
id obj = [labels objectAtIndex:i];
if ([obj isKindOfClass:SKLabelNode.class]) {
SKLabelNode* label = obj;
label.verticalAlignmentMode = SKLabelVerticalAlignmentModeTop;
label.position = CGPointMake(0, y);
[self addChild:label];
const CGSize SIZEOFLABEL = [label calculateAccumulatedFrame].size;
y -= SIZEOFLABEL.height;
}
else {
y -= _spaceHeight;
}
if (i + 1 < labels.count)
y -= _verticalMargin;
}
}
@end