blank project

node_modules/fontkit/src/tables/VDMX.js

@@ -0,0 +1,33 @@
+import * as r from 'restructure';
+
+// VDMX tables contain ascender/descender overrides for certain (usually small)
+// sizes. This is needed in order to match font metrics on Windows.
+
+let Ratio = new r.Struct({
+  bCharSet:       r.uint8,                             // Character set
+  xRatio:         r.uint8,                             // Value to use for x-Ratio
+  yStartRatio:    r.uint8,                             // Starting y-Ratio value
+  yEndRatio:      r.uint8                              // Ending y-Ratio value
+});
+
+let vTable = new r.Struct({
+  yPelHeight:     r.uint16,                            // yPelHeight to which values apply
+  yMax:           r.int16,                             // Maximum value (in pels) for this yPelHeight
+  yMin:           r.int16                              // Minimum value (in pels) for this yPelHeight
+});
+
+let VdmxGroup = new r.Struct({
+  recs:           r.uint16,                            // Number of height records in this group
+  startsz:        r.uint8,                             // Starting yPelHeight
+  endsz:          r.uint8,                             // Ending yPelHeight
+  entries:        new r.Array(vTable, 'recs')          // The VDMX records
+});
+
+export default new r.Struct({
+  version:        r.uint16,                            // Version number (0 or 1)
+  numRecs:        r.uint16,                            // Number of VDMX groups present
+  numRatios:      r.uint16,                            // Number of aspect ratio groupings
+  ratioRanges:    new r.Array(Ratio, 'numRatios'),     // Ratio ranges
+  offsets:        new r.Array(r.uint16, 'numRatios'),  // Offset to the VDMX group for this ratio range
+  groups:         new r.Array(VdmxGroup, 'numRecs')    // The actual VDMX groupings
+});