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New: implement baseline offsets and superscript/subscript support

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This commit is contained in:
daboe01
2026-06-18 19:08:45 +02:00
parent bc0380e1cb
commit de2ffd3aad
4 changed files with 280 additions and 14 deletions
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AppKit/CPFont.j
+16
View File
@@ -464,6 +464,22 @@ following:
return _CPRealFontSize(_size);
}
/*!
Returns the font size. Cocoa/AppKit compatibility alias for -size.
*/
- (float)pointSize
{
return [self size];
}
/*!
Returns the font name. Cocoa/AppKit compatibility alias for -familyName.
*/
- (CPString)fontName
{
return [self familyName];
}
/*!
Returns the font as a CSS string
*/
AppKit/CPTextView/CPLayoutManager.j
+44 -6
View File
@@ -31,8 +31,9 @@
@import "CPFont.j"
@global _MakeRangeFromAbs
@global document
@global CPBaselineOffsetAttributeName
@global CPSuperscriptAttributeName
@class CPTextContainer
@class CPTextView
@@ -1225,7 +1226,7 @@ var _objectsInRange = function(aList, aRange)
if (![attributes objectForKey:_CPAttachmentInvisible])
{
var view = [attributes objectForKey:_CPAttachmentView];
var run = {_range:CPMakeRangeCopy(effectiveRange), color:nil, font:nil, elem:nil, string:nil, view:view, paragraphStyle:paragraphStyle};
var run = {_range:CPMakeRangeCopy(effectiveRange), color:nil, font:nil, elem:nil, string:nil, view:view, paragraphStyle:paragraphStyle, underline:underline, baselineOffset:0.0};
_runs.push(run);
}
}
@@ -1235,6 +1236,34 @@ var _objectsInRange = function(aList, aRange)
bgcolor = [attributes objectForKey:CPBackgroundColorAttributeName],
font = [attributes objectForKey:CPFontAttributeName] || [textStorage font] || [CPFont systemFontOfSize:12.0];
var baselineOffset = [attributes objectForKey:CPBaselineOffsetAttributeName],
superscript = [attributes objectForKey:CPSuperscriptAttributeName];
if (baselineOffset === nil || baselineOffset === undefined || typeof baselineOffset !== "number")
baselineOffset = 0.0;
if (superscript === nil || superscript === undefined || typeof superscript !== "number")
superscript = 0;
if (superscript !== 0)
{
var size = [font size],
scaledSize = size * 0.65,
fontName = [font familyName],
isBold = [font isBold],
isItalic = [font isItalic];
font = [CPFont _fontWithName:fontName size:scaledSize bold:isBold italic:isItalic];
if (baselineOffset === 0.0)
{
if (superscript > 0)
baselineOffset = size * 0.35;
else
baselineOffset = -size * 0.15;
}
}
var currentLoc = effectiveRange.location,
strLen = string.length,
startIdx = 0;
@@ -1254,7 +1283,9 @@ var _objectsInRange = function(aList, aRange)
elem: nil,
string: subString,
bgcolor: bgcolor,
paragraphStyle: paragraphStyle
paragraphStyle: paragraphStyle,
underline: underline,
baselineOffset: baselineOffset
};
_runs.push(run);
}
@@ -1267,7 +1298,9 @@ var _objectsInRange = function(aList, aRange)
elem: nil,
string: nil,
bgcolor: nil,
paragraphStyle: paragraphStyle
paragraphStyle: paragraphStyle,
underline: underline,
baselineOffset: 0.0
};
_runs.push(tabRun);
@@ -1286,7 +1319,9 @@ var _objectsInRange = function(aList, aRange)
elem: nil,
string: subString,
bgcolor: bgcolor,
paragraphStyle: paragraphStyle
paragraphStyle: paragraphStyle,
underline: underline,
baselineOffset: baselineOffset
};
_runs.push(run);
}
@@ -1458,7 +1493,10 @@ var _objectsInRange = function(aList, aRange)
if (!_RectEqualToRectHorizontally(newLineFragment._fragmentRect, _fragmentRect))
return NO;
if (newFragmentRuns[i].color !== oldFragmentRuns[i].color || newFragmentRuns[i].bgcolor !== oldFragmentRuns[i].bgcolor || newFragmentRuns[i].font !== oldFragmentRuns[i].font)
if (newFragmentRuns[i].color !== oldFragmentRuns[i].color ||
newFragmentRuns[i].bgcolor !== oldFragmentRuns[i].bgcolor ||
newFragmentRuns[i].font !== oldFragmentRuns[i].font ||
newFragmentRuns[i].baselineOffset !== oldFragmentRuns[i].baselineOffset)
return NO;
var oldStyle = oldFragmentRuns[i].paragraphStyle || [CPParagraphStyle defaultParagraphStyle],
AppKit/CPTextView/CPTypesetter.j
+47 -8
View File
@@ -30,6 +30,9 @@
@import "CPTextStorage.j"
@import "CPFont.j"
@global CPBaselineOffsetAttributeName
@global CPSuperscriptAttributeName
// forward declare these classes for type matching
@class CPLayoutManager
@class CPTextContainer
@@ -353,9 +356,41 @@ var CPSystemTypesetterFactory,
if (!currentFont)
currentFont = [_textStorage font] || [CPFont systemFontOfSize:12.0];
ascent = [currentFont ascender];
descent = [currentFont descender];
leading = (ascent - descent) * 0.2; // FAKE leading
// Safely retrieve and validate CPBaselineOffsetAttributeName
var baselineOffset = [_currentAttributes objectForKey:CPBaselineOffsetAttributeName];
if (baselineOffset === nil || baselineOffset === undefined || typeof baselineOffset !== "number")
baselineOffset = 0.0;
// Safely retrieve and validate CPSuperscriptAttributeName
var superscript = [_currentAttributes objectForKey:CPSuperscriptAttributeName];
if (superscript === nil || superscript === undefined || typeof superscript !== "number")
superscript = 0;
if (superscript !== 0)
{
var size = [currentFont size],
scaledSize = size * 0.65,
fontName = [currentFont familyName],
isBold = [currentFont isBold],
isItalic = [currentFont isItalic];
currentFont = [CPFont _fontWithName:fontName size:scaledSize bold:isBold italic:isItalic];
if (baselineOffset === 0.0)
{
if (superscript > 0)
baselineOffset = size * 0.35;
else
baselineOffset = -size * 0.15;
}
}
var fontAscent = [currentFont ascender] || 0.0,
fontDescent = [currentFont descender] || 0.0;
ascent = fontAscent + baselineOffset;
descent = fontDescent + baselineOffset;
leading = (fontAscent - fontDescent) * 0.2; // FAKE leading
currentFontLineHeight = ascent - descent + leading;
@@ -368,11 +403,15 @@ var CPSystemTypesetterFactory,
}
if (currentFontLineHeight > _lineHeight)
_lineHeight = currentFontLineHeight;
// Clean bounds logic to prevent NaN and layout calculation overhead
var currentAscent = (ascent === undefined || isNaN(ascent)) ? 0.0 : ascent,
currentLineHeight = (currentFontLineHeight === undefined || isNaN(currentFontLineHeight)) ? 12.0 : currentFontLineHeight;
if (ascent > _lineBase)
_lineBase = ascent;
if (currentLineHeight > _lineHeight)
_lineHeight = currentLineHeight;
if (currentAscent > _lineBase)
_lineBase = currentAscent;
lineRange.length++;
measuringRange.length++;
@@ -546,7 +585,7 @@ var CPSystemTypesetterFactory,
isNewline = NO;
_lineFragments = [];
_lineHeight = 0;
_lineBase = ascent;
_lineBase = 0;
isStartOfPhysicalLine = YES;
}