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Don’t handle touches on additional attributed message if passthrough is enabled (#1184)

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* Don’t handle touches on additional attributed message if passthrough is enabled

* Cleanup

* Don't handle extra inAdditionalTruncationMessage within pointInside:withEvent:

* Update changelog

* Address comments
This commit is contained in:
Michael Schneider
2018-10-24 07:49:58 -07:00
committed by GitHub
parent 1d78a3d07f
commit dab3281afa
4 changed files with 75 additions and 15 deletions
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72
Source/ASTextNode2.mm
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@@ -572,20 +572,17 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
ASTextContainer *containerCopy = [_textContainer copy];
containerCopy.size = self.calculatedSize;
ASTextLayout *layout = ASTextNodeCompatibleLayoutWithContainerAndText(containerCopy, _attributedText);
NSRange visibleRange = layout.visibleRange;
NSRange clampedRange = NSIntersectionRange(visibleRange, NSMakeRange(0, _attributedText.length));
ASTextRange *range = [layout closestTextRangeAtPoint:point];
// For now, assume that a tap inside this text, but outside the text range is a tap on the
// truncation token.
if (![layout textRangeAtPoint:point]) {
if ([self _locked_pointInsideAdditionalTruncationMessage:point withLayout:layout]) {
if (inAdditionalTruncationMessageOut != NULL) {
*inAdditionalTruncationMessageOut = YES;
}
return nil;
}
NSRange visibleRange = layout.visibleRange;
NSRange clampedRange = NSIntersectionRange(visibleRange, NSMakeRange(0, _attributedText.length));
ASTextRange *range = [layout closestTextRangeAtPoint:point];
NSRange effectiveRange = NSMakeRange(0, 0);
for (__strong NSString *attributeName in self.linkAttributeNames) {
id value = [self.attributedText attribute:attributeName atIndex:range.start.offset longestEffectiveRange:&effectiveRange inRange:clampedRange];
@@ -617,6 +614,61 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
return nil;
}
- (BOOL)_locked_pointInsideAdditionalTruncationMessage:(CGPoint)point withLayout:(ASTextLayout *)layout
{
// Check if the range is within the additional truncation range
BOOL inAdditionalTruncationMessage = NO;
CTLineRef truncatedCTLine = layout.truncatedLine.CTLine;
if (truncatedCTLine != NULL && _additionalTruncationMessage != nil) {
CFIndex stringIndexForPosition = CTLineGetStringIndexForPosition(truncatedCTLine, point);
if (stringIndexForPosition != kCFNotFound) {
CFIndex truncatedCTLineGlyphCount = CTLineGetGlyphCount(truncatedCTLine);
CTLineRef truncationTokenLine = CTLineCreateWithAttributedString((CFAttributedStringRef)_truncationAttributedText);
CFIndex truncationTokenLineGlyphCount = truncationTokenLine ? CTLineGetGlyphCount(truncationTokenLine) : 0;
CTLineRef additionalTruncationTokenLine = CTLineCreateWithAttributedString((CFAttributedStringRef)_additionalTruncationMessage);
CFIndex additionalTruncationTokenLineGlyphCount = additionalTruncationTokenLine ? CTLineGetGlyphCount(additionalTruncationTokenLine) : 0;
switch (_textContainer.truncationType) {
case ASTextTruncationTypeStart: {
CFIndex composedTruncationTextLineGlyphCount = truncationTokenLineGlyphCount + additionalTruncationTokenLineGlyphCount;
if (stringIndexForPosition > truncationTokenLineGlyphCount &&
stringIndexForPosition < composedTruncationTextLineGlyphCount) {
inAdditionalTruncationMessage = YES;
}
break;
}
case ASTextTruncationTypeMiddle: {
CFIndex composedTruncationTextLineGlyphCount = truncationTokenLineGlyphCount + additionalTruncationTokenLineGlyphCount;
CFIndex firstTruncatedTokenIndex = (truncatedCTLineGlyphCount - composedTruncationTextLineGlyphCount) / 2.0;
if ((firstTruncatedTokenIndex + truncationTokenLineGlyphCount) < stringIndexForPosition &&
stringIndexForPosition < (firstTruncatedTokenIndex + composedTruncationTextLineGlyphCount)) {
inAdditionalTruncationMessage = YES;
}
break;
}
case ASTextTruncationTypeEnd: {
if (stringIndexForPosition > (truncatedCTLineGlyphCount - additionalTruncationTokenLineGlyphCount)) {
inAdditionalTruncationMessage = YES;
}
break;
}
default:
// For now, assume that a tap inside this text, but outside the text range is a tap on the
// truncation token.
if (![layout textRangeAtPoint:point]) {
inAdditionalTruncationMessage = YES;
}
break;
}
}
}
return inAdditionalTruncationMessage;
}
#pragma mark - UIGestureRecognizerDelegate
- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
@@ -789,9 +841,7 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
NSUInteger lastCharIndex = NSIntegerMax;
BOOL linkCrossesVisibleRange = (lastCharIndex > range.location) && (lastCharIndex < NSMaxRange(range) - 1);
if (inAdditionalTruncationMessage) {
return YES;
} else if (range.length && !linkCrossesVisibleRange && linkAttributeValue != nil && linkAttributeName != nil) {
if (range.length > 0 && !linkCrossesVisibleRange && linkAttributeValue != nil && linkAttributeName != nil) {
return YES;
} else {
return NO;
@@ -832,7 +882,7 @@ static NSArray *DefaultLinkAttributeNames = @[ NSLinkAttributeName ];
}
NSRange truncationMessageRange = [self _additionalTruncationMessageRangeWithVisibleRange:visibleRange];
[self _setHighlightRange:truncationMessageRange forAttributeName:ASTextNodeTruncationTokenAttributeName value:nil animated:YES];
} else if (range.length && !linkCrossesVisibleRange && linkAttributeValue != nil && linkAttributeName != nil) {
} else if (range.length > 0 && !linkCrossesVisibleRange && linkAttributeValue != nil && linkAttributeName != nil) {
[self _setHighlightRange:range forAttributeName:linkAttributeName value:linkAttributeValue animated:YES];
}