This table contains information for horizontal layout. The values in the
minRightSidebearing, minLeftSideBearing and xMaxExtent should be computed using
only
glyphs that have contours. Glyphs with no contours should be ignored for the
purposes of these calculations. All reserved areas must be set to 0.
| Type |
Name |
Description |
| Fixed |
Table version number |
0x00010000 for version 1.0. |
| FWORD |
Ascender |
Typographic ascent.
(Distance from baseline of highest ascender) |
| FWORD |
Descender |
Typographic descent.
(Distance from baseline of lowest descender) |
| FWORD |
LineGap |
Typographic line gap.
Negative LineGap values are treated as zero
in Windows 3.1, System 6, and
System 7. |
| UFWORD |
advanceWidthMax |
Maximum advance width value in 'hmtx' table. |
| FWORD |
minLeftSideBearing |
Minimum left sidebearing value in 'hmtx' table. |
| FWORD |
minRightSideBearing |
Minimum right sidebearing value; calculated as
Min(aw - lsb - (xMax - xMin)). |
| FWORD |
xMaxExtent |
Max(lsb + (xMax - xMin)). |
| SHORT |
caretSlopeRise |
Used to calculate the slope of the cursor
(rise/run); 1 for vertical. |
| SHORT |
caretSlopeRun |
0 for vertical. |
| SHORT |
caretOffset |
The amount by which a slanted highlight on a glyph
needs to be shifted to produce the best appearance. Set to 0 for non-slanted
fonts |
| SHORT |
(reserved) |
set to 0 |
| SHORT |
(reserved) |
set to 0 |
| SHORT |
(reserved) |
set to 0 |
| SHORT |
(reserved) |
set to 0 |
| SHORT |
metricDataFormat |
0 for current format. |
| USHORT |
numberOfHMetrics |
Number of hMetric entries in 'hmtx' table |
NOTE: The ascender, descender and linegap values in this table are Apple
specific. Also see information in the OS/2 table.
this page was last updated 1 March 2002
© 2001 Microsoft Corporation. All rights reserved.
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