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And integrated the rest of our important tests in.

This commit is contained in:
Pietro Gagliardi 2017-01-05 21:36:07 -05:00
parent 747a0bbfad
commit 6212ac7238
1 changed files with 7 additions and 4 deletions
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11
darwin/drawtext.m
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@ -5,6 +5,11 @@ struct uiDrawTextLayout {
CFAttributedStringRef attrstr;
double width;
CTFramesetterRef framesetter;
// note: technically, metrics returned from frame are relative to CGPathGetPathBoundingBox(tl->path)
// however, from what I can gather, for a path created by CGPathCreateWithRect(), like we do (with a NULL transform), CGPathGetPathBoundingBox() seems to just return the standardized form of the rect used to create the path
// (this I confirmed through experimentation)
// so we can just use tl->size for adjustments
// we don't need to adjust coordinates by any origin since our rect origin is (0, 0)
CGSize size;
CGPathRef path;
CTFrameRef frame;
@ -127,7 +132,6 @@ void uiDrawText(uiDrawContext *c, uiDrawTextLayout *tl, double x, double y)
// TODO document that the width and height of a layout is not necessarily the sum of the widths and heights of its constituent lines; this is definitely untrue on OS X, where lines are placed in such a way that the distance between baselines is always integral
void uiDrawTextLayoutExtents(uiDrawTextLayout *tl, double *width, double *height)
{
// TODO how exactly do we adjust this by CGPathGetPathBoundingBox(tl->path)?
*width = tl->size.width;
*height = tl->size.height;
}
@ -160,10 +164,9 @@ void uiDrawTextLayoutLineGetMetrics(uiDrawTextLayout *tl, int line, uiDrawTextLa
range.location = line;
range.length = 1;
CTFrameGetLineOrigins(tl->frame, range, &origin);
// TODO how exactly do we adjust this by CGPathGetPathBoundingBox(tl->path)?
m->X = origin.x;
m->BaselineY = origin.y;
// TODO m->Y is flipped
// and remember that the frame is flipped
m->BaselineY = tl->size.height - origin.y;
lr = getline(tl, line);
// though CTLineGetTypographicBounds() returns 0 on error, it also returns 0 on an empty string, so we can't reasonably check for error