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Implements vertical writing

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vyv03354 2013-02-08 21:29:22 +09:00
parent 4247339d28
commit c5b8ee6a91
9 changed files with 112 additions and 29 deletions
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39
src/evaluator.js
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@ -796,7 +796,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
} // switch
if (chunk !== '') {
bidiTexts.push(PDFJS.bidi(chunk, -1));
var bidiText = PDFJS.bidi(chunk, -1, font.vertical);
bidiTexts.push(bidiText);
chunk = '';
}
@ -831,10 +832,6 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
};
}
var cidEncoding = baseDict.get('Encoding');
if (isName(cidEncoding))
properties.cidEncoding = cidEncoding.name;
var cidToGidMap = dict.get('CIDToGIDMap');
if (isStream(cidToGidMap))
properties.cidToGidMap = this.readCidToGidMap(cidToGidMap);
@ -1031,6 +1028,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
properties) {
var glyphsWidths = [];
var defaultWidth = 0;
var glyphsVMetrics = [];
var defaultVMetrics;
if (properties.composite) {
defaultWidth = dict.get('DW') || 1000;
@ -1049,6 +1048,26 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
}
}
}
if (properties.vertical) {
var vmetrics = dict.get('DW2') || [880, -1000];
defaultVMetrics = [vmetrics[1], vmetrics[1] / 2, vmetrics[0]];
vmetrics = dict.get('W2');
if (vmetrics) {
for (var i = 0, ii = vmetrics.length; i < ii; i++) {
var start = vmetrics[i++];
var code = xref.fetchIfRef(vmetrics[i]);
if (isArray(code)) {
for (var j = 0, jj = code.length; j < jj; j++)
glyphsVMetrics[start++] = [code[j++], code[j++], code[j]];
} else {
var vmetric = [vmetrics[++i], vmetrics[++i], vmetrics[++i]];
for (var j = start; j <= code; j++)
glyphsVMetrics[j] = vmetric;
}
}
}
}
} else {
var firstChar = properties.firstChar;
var widths = dict.get('Widths');
@ -1089,6 +1108,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
properties.defaultWidth = defaultWidth;
properties.widths = glyphsWidths;
properties.defaultVMetrics = defaultVMetrics;
properties.vmetrics = glyphsVMetrics;
},
isSerifFont: function PartialEvaluator_isSerifFont(baseFontName) {
@ -1260,6 +1281,14 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
italicAngle: descriptor.get('ItalicAngle'),
coded: false
};
if (composite) {
var cidEncoding = baseDict.get('Encoding');
if (isName(cidEncoding)) {
properties.cidEncoding = cidEncoding.name;
properties.vertical = /-V$/.test(cidEncoding.name);
}
}
this.extractWidths(dict, xref, descriptor, properties);
this.extractDataStructures(dict, baseDict, xref, properties);