New algorithm for calculating glyph extents in Xgl
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@ -844,15 +844,21 @@ xglGlyphExtents (PicturePtr pDst,
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BoxPtr extents)
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{
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GlyphPtr glyph;
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BoxRec line;
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int x1, x2, y1, y2;
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int n;
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int x;
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int y;
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Bool x_overlap, overlap = FALSE;
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Bool overlap = FALSE;
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x = 0;
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y = 0;
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extents->x1 = MAXSHORT;
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extents->x2 = MINSHORT;
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extents->y1 = MAXSHORT;
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extents->y2 = MINSHORT;
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while (!list->len)
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{
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if (--nlist)
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@ -863,11 +869,6 @@ xglGlyphExtents (PicturePtr pDst,
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}
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else
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{
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extents->x1 = MAXSHORT;
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extents->x2 = MINSHORT;
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extents->y1 = MAXSHORT;
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extents->y2 = MINSHORT;
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return FALSE;
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}
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}
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@ -880,10 +881,10 @@ xglGlyphExtents (PicturePtr pDst,
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if (y1 < MINSHORT)
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y1 = MINSHORT;
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extents->x1 = x1;
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extents->x2 = x1;
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extents->y1 = y1;
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extents->y2 = y1;
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line.x1 = x1;
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line.x2 = x1;
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line.y1 = y1;
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line.y2 = y1;
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while (nlist--)
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{
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@ -908,33 +909,55 @@ xglGlyphExtents (PicturePtr pDst,
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if (y2 > MAXSHORT)
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y2 = MAXSHORT;
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x_overlap = FALSE;
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if (x1 >= extents->x2)
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extents->x2 = x2;
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else if (x2 <= extents->x1)
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extents->x1 = x1;
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if (x1 >= line.x2)
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{
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line.x2 = x2;
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if (y1 < line.y1)
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line.y1 = y1;
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if (y2 > line.y2)
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line.y2 = y2;
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}
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else if (x2 <= line.x1)
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{
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line.x1 = x1;
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if (y1 < line.y1)
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line.y1 = y1;
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if (y2 > line.y2)
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line.y2 = y2;
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}
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else
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{
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x_overlap = TRUE;
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if (x1 < extents->x1)
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extents->x1 = x1;
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if (x2 > extents->x2)
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extents->x2 = x2;
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if (line.y1 >= extents->y2)
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{
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extents->y2 = line.y2;
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if (line.y1 < extents->y1)
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extents->y1 = line.y1;
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}
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else if (line.y2 <= extents->y1)
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{
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extents->y1 = line.y1;
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if (line.y2 > extents->y2)
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extents->y2 = line.y2;
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}
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else
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{
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if (line.y1 < extents->y1)
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extents->y1 = line.y1;
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if (line.y2 > extents->y2)
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extents->y2 = line.y2;
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overlap = TRUE;
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}
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if (y1 >= extents->y2)
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extents->y2 = y2;
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else if (y2 <= extents->y1)
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extents->y1 = y1;
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else
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{
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if (y1 < extents->y1)
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extents->y1 = y1;
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if (y2 > extents->y2)
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extents->y2 = y2;
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if (line.x1 < extents->x1)
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extents->x1 = line.x1;
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if (line.x2 > extents->x2)
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extents->x2 = line.x2;
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if (x_overlap)
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overlap = TRUE;
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line.x1 = x1;
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line.y1 = y1;
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line.x2 = x2;
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line.y2 = y2;
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}
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x += glyph->info.xOff;
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@ -942,6 +965,33 @@ xglGlyphExtents (PicturePtr pDst,
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}
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}
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if (line.y1 >= extents->y2)
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{
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extents->y2 = line.y2;
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if (line.y1 < extents->y1)
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extents->y1 = line.y1;
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}
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else if (line.y2 <= extents->y1)
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{
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extents->y1 = line.y1;
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if (line.y2 > extents->y2)
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extents->y2 = line.y2;
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}
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else
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{
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if (line.y1 < extents->y1)
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extents->y1 = line.y1;
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if (line.y2 > extents->y2)
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extents->y2 = line.y2;
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overlap = TRUE;
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}
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if (line.x1 < extents->x1)
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extents->x1 = line.x1;
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if (line.x2 > extents->x2)
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extents->x2 = line.x2;
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xglPictureClipExtents (pDst, extents);
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return overlap;
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