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Attempted to the layout er I mean attempted to define the ascent, desceitn, er descent, and leading for the NSLayoutManager based code AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA.

This commit is contained in:
Pietro Gagliardi 2017-01-24 01:04:08 -05:00
parent 1ca9a28f2d
commit d1e2b17f6e
1 changed files with 38 additions and 13 deletions
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51
darwin/drawtext.m
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@ -9,6 +9,9 @@
@property NSRect lineUsedRect;
@property NSRect glyphBoundingRect;
@property CGFloat baselineOffset;
@property double ascent;
@property double descent;
@property double leading;
@end
@implementation lineInfo
@ -111,23 +114,47 @@ uiDrawTextLayout *uiDrawNewTextLayout(uiAttributedString *s, uiDrawFontDescripto
index = 0;
while (index < [tl->layoutManager numberOfGlyphs]) {
NSRange glyphRange;
NSRect lineRect;
lineInfo *li;
__block lineInfo *li;
lineRect = [tl->layoutManager lineFragmentRectForGlyphAtIndex:index effectiveRange:&glyphRange];
li = [lineInfo new];
li.lineRect = [tl->layoutManager lineFragmentRectForGlyphAtIndex:index effectiveRange:&glyphRange];
li.glyphRange = glyphRange;
li.characterRange = [tl->layoutManager characterRangeForGlyphRange:li.glyphRange actualGlyphRange:NULL];
li.lineRect = lineRect;
li.lineUsedRect = [tl->layoutManager lineFragmentUsedRectForGlyphAtIndex:index effectiveRange:NULL];
li.glyphBoundingRect = [tl->layoutManager boundingRectForGlyphRange:li.glyphRange inTextContainer:tl->container];
// and this is from http://www.cocoabuilder.com/archive/cocoa/308568-how-to-get-baseline-info.html and http://www.cocoabuilder.com/archive/cocoa/199283-height-and-location-of-text-within-line-in-nslayoutmanager-ignoring-spacing.html
li.baselineOffset = [[tl->layoutManager typesetter] baselineOffsetInLayoutManager:tl->layoutManager glyphIndex:index];
li.ascent = 0;
li.descent = 0;
li.leading = 0;
// imitate what AppKit actually does (or seems to)
[tl->attrstr enumerateAttributesInRange:li.characterRange options:0 usingBlock:^(NSDictionary<NSString *,id> *attrs, NSRange range, BOOL *stop) {
NSFont *f;
double v;
f = (NSFont *) [attrs objectForKey:NSFontAttributeName];
if (f == nil) {
f = [NSFont fontWithName:@"Helvetica" size:12.0];
if (f == nil)
f = [NSFont systemFontOfSize:12.0];
}
NSLog(@"%@ %g %g %g", NSStringFromRect([f boundingRectForFont]),
[f ascender], [f descender], [f leading]);
v = floor([f ascender] + 0.5);
if (li.ascent < v)
li.ascent = v;
v = floor(-[f descender] + 0.5);
if (li.descent < v)
li.descent = v;
v = floor([f leading] + 0.5);
if (li.leading < v)
li.leading = v;
}];
[tl->lineInfo addObject:li];
NSLog(@"line %d", (int)[tl->lineInfo count]);
NSLog(@" rect %@", NSStringFromRect(li.lineRect));
NSLog(@" used rect %@", NSStringFromRect(li.lineUsedRect));
NSLog(@"glyph rect %@", NSStringFromRect(li.glyphBoundingRect));
[li release];
index = glyphRange.location + glyphRange.length;
}
@ -211,11 +238,9 @@ void uiDrawTextLayoutLineGetMetrics(uiDrawTextLayout *tl, int line, uiDrawTextLa
// TODO is this correct?
m->BaselineY = (m->Y + m->Height) - li.baselineOffset;
// TODO
m->Ascent = 10000;
m->Descent = 10000;
m->Leading = 10000;
m->Ascent = li.ascent;
m->Descent = li.descent;
m->Leading = li.leading;
// TODO
m->ParagraphSpacingBefore = 0;