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TextEditor sample: Allow scrolling when viewUsedSize > contentSize #68

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TextEditor sample: Allow scrolling when viewUsedSize > contentSize #68

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14 changes: 12 additions & 2 deletions Frameworks/OmniUI/iPad/Examples/TextEditor/Classes/TextScrollView.m
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Original file line number Diff line number Diff line change
Expand Up @@ -31,14 +31,24 @@ - (void)layoutSubviews;
// First make sure the text is the right width so that it can calculate the right used height
CGRect textFrame = _textView.frame;
if (textFrame.size.width != bounds.size.width) {
_textView.frame = CGRectMake(0, 0, bounds.size.width, textFrame.size.height);
textFrame.size.width = bounds.size.width;
}

// Then ensure the height is large enough to span the text (or our height).
CGSize usedSize = _textView.viewUsedSize;
CGFloat height = MAX(bounds.size.height, usedSize.height);
if (height != textFrame.size.height) {
_textView.frame = CGRectMake(0, 0, bounds.size.width, height);
textFrame.size.height = height;
}

// Adjust the textView frame only if needed
if (!CGRectEqualToRect(_textView.frame, textFrame)) {
_textView.frame = textFrame;
}

// Adjust the contentSize so we can scroll
if (!CGSizeEqualToSize(self.contentSize, textFrame.size)) {
self.contentSize = textFrame.size;
}
}

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