LineHeight in EGOTextView - iphone

Question

Im employing EGOTextView to do rich text editing. But the lineHeight of the EGOTextView appears a little smaller than in the UITextView, which are set the same font.
I have tried to set the kCTParagraphStyleSpecifierMinimumLineHeight and kCTParagraphStyleSpecifierMaximumLineHeight in the default attribute, but it is not a good solution as I need to insert image which has to modify the lineHeight. Any help will be appreciated:)
EGOTextView.m
- (void)viewDidLoad {
[super viewDidLoad];
UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:[NSArray arrayWithObjects:#"UITextView", #"EGOTextView", nil]];
segment.segmentedControlStyle = UISegmentedControlStyleBar;
[segment addTarget:self action:#selector(segmentChanged:) forControlEvents:UIControlEventValueChanged];
self.navigationItem.titleView = segment;
[segment release];
if (_textView==nil) {
UITextView *textView = [[UITextView alloc] initWithFrame:self.view.bounds];
textView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
textView.font = [UIFont systemFontOfSize:14];
[self.view addSubview:textView];
self.textView = textView;
[textView release];
}
if (_egoTextView==nil) {
EGOTextView *view = [[EGOTextView alloc] initWithFrame:self.view.bounds];
view.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
view.delegate = (id<EGOTextViewDelegate>)self;
[self.view addSubview:view];
self.egoTextView = view;
self.egoTextView.delegate = self;
[view release];
[self.egoTextView setFont:[UIFont systemFontOfSize:14]];
}
[segment setSelectedSegmentIndex:1];
}

Answer 1

You can set the kCTParagraphStyleSpecifierLineSpacing on the CTParagraphStyleSetting for the NSAttributedString to the number of points you would like to separate lines by. Alternatively, you could also specify a line height multiple using kCTParagraphStyleSpecifierLineHeightMultiple, for increasing line height by a factor.
Here's a quick example:
CGFloat lineSpacing = 0.f; // spacing, in points
CGFloat lineHeightMultiple = 0.f; // line height multiple
CTParagraphStyleSetting paragraphStyles[2] = {
{.spec = kCTParagraphStyleSpecifierLineSpacing, .valueSize = sizeof(CGFloat), .value = (const void *)&lineSpacing},
{.spec = kCTParagraphStyleSpecifierLineHeightMultiple, .valueSize = sizeof(CGFloat), .value = (const void *)&lineHeightMultiple}
};
CTParagraphStyleRef paragraphStyle = CTParagraphStyleCreate(paragraphStyles, 10);
[NSDictionary dictionaryWithObject:(__bridge id)paragraphStyle
forKey:(NSString *)kCTParagraphStyleAttributeName];
CFRelease(paragraphStyle);