@@ -2,50 +2,6 @@ #import "NeoUtils.h" -/** - * Calculates the typographic bounds of a line. - */ -static CGSize MTLineGetTypographicSize(CTLineRef line) { - CGFloat ascent, descent, leading; - double w = CTLineGetTypographicBounds(line, &ascent, &descent, &leading); - - if (w > 0.0) { - const double h = ascent + descent + leading; - w -= CTLineGetTrailingWhitespaceWidth(line); - - return CGSizeMake( - w > CGFLOAT_MAX ? CGFLOAT_MAX : (CGFloat) w, - h > CGFLOAT_MAX ? CGFLOAT_MAX : (CGFloat) h - ); - } - return CGSizeZero; -} - -static CGRect MTLineGetFirstRectForCharacterAtIndex(CTFrameRef frame, CTLineRef line, CFIndex lineIndex, CFIndex charIndex, Boolean verticalForms) { - const CGRect box = MTFrameGetBoundingBox(frame); - const CGPoint origin = MTFrameGetLineOriginAtIndex(frame, lineIndex); - const CGFloat offset = CTLineGetOffsetForStringIndex(line, charIndex, NULL); - const CGSize size = MTLineGetTypographicSize(line); - - if (CGSizeEqualToSize(size, CGSizeZero)) return CGRectNull; - if (!verticalForms) { - return CGRectMake( - origin.x + CGRectGetMinX(box) + offset, - origin.y - CGRectGetMinY(box), - size.width - offset, - size.height - ); - } else { - return CGRectMake( - origin.x, - origin.y - size.width + CGRectGetMinY(box), - size.height, - size.width - offset - ); - } -} - - // ---------------------------------------------------------------- // Constants // ---------------------------------------------------------------- src/NeoTextView.m @@ -47,11 +47,26 @@ NS_INLINE BOOL NeoNSUIntegerCanAdvance(NSUInteger index, NSUInteger exclusiveLim * Returns the lowest index of the matching line in the frame, * or -1 if no line in the frame matched. */ -extern CFIndex MTFrameGetFirstLine( - CTFrameRef frame, - CFIndex charIndex, - CTLineRef *found, - CFRange *characterRange); +extern +CFIndex MTFrameGetFirstLine( + CTFrameRef frame, + CFIndex charIndex, + CTLineRef *found, + CFRange *characterRange); + +/** + * Calculates the typographic bounds of a line. + */ +extern +CGSize MTLineGetTypographicSize(CTLineRef line); + +extern +CGRect MTLineGetFirstRectForCharacterAtIndex( + CTFrameRef frame, + CTLineRef line, + CFIndex lineIndex, + CFIndex charIndex, + Boolean verticalForms); /** * Returns a line origin for a frame. src/NeoUtils.h @@ -2,10 +2,10 @@ CFIndex MTFrameGetFirstLine( - CTFrameRef frame, - CFIndex charIndex, - CTLineRef *found, - CFRange *characterRange) + CTFrameRef frame, + CFIndex charIndex, + CTLineRef *found, + CFRange *characterRange) { const CFArrayRef lines = CTFrameGetLines(frame); CFIndex l = 0, u = CFArrayGetCount(lines); @@ -28,4 +28,50 @@ CFIndex MTFrameGetFirstLine( return -1; } +CGSize MTLineGetTypographicSize(CTLineRef line) { + CGFloat ascent, descent, leading; + double w = CTLineGetTypographicBounds(line, &ascent, &descent, &leading); + + if (w > 0.0) { + const double h = ascent + descent + leading; + w -= CTLineGetTrailingWhitespaceWidth(line); + + return CGSizeMake( + w > CGFLOAT_MAX ? CGFLOAT_MAX : (CGFloat) w, + h > CGFLOAT_MAX ? CGFLOAT_MAX : (CGFloat) h + ); + } + return CGSizeZero; +} + +CGRect MTLineGetFirstRectForCharacterAtIndex( + CTFrameRef frame, + CTLineRef line, + CFIndex lineIndex, + CFIndex charIndex, + Boolean verticalForms) +{ + const CGRect box = MTFrameGetBoundingBox(frame); + const CGPoint origin = MTFrameGetLineOriginAtIndex(frame, lineIndex); + const CGFloat offset = CTLineGetOffsetForStringIndex(line, charIndex, NULL); + const CGSize size = MTLineGetTypographicSize(line); + + if (CGSizeEqualToSize(size, CGSizeZero)) return CGRectNull; + if (!verticalForms) { + return CGRectMake( + origin.x + CGRectGetMinX(box) + offset, + origin.y - CGRectGetMinY(box), + size.width - offset, + size.height + ); + } else { + return CGRectMake( + origin.x, + origin.y - size.width + CGRectGetMinY(box), + size.height, + size.width - offset + ); + } +} + src/NeoUtils.m 280526b7ec5739140612d41d55aadb39099915c7 Takanori Ishikawa takanori.ishikawa@gmail.com http://github.com/ishikawa/neuro/commit/4708ef79895c5ef0dc91051c2f624017d17889da 4708ef79895c5ef0dc91051c2f624017d17889da 2009-08-04T07:48:16-07:00 2009-08-04T07:48:16-07:00 Moved MT** function to NeoUtils 259d23a99d3747142333f5f2812e471784975488 Takanori Ishikawa takanori.ishikawa@gmail.com