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修复TTF字体loca表识别错误的bug

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Antecer 2024-06-18 17:07:01 +08:00
parent 0337e465de
commit dc9ce168c1
1 changed files with 5 additions and 0 deletions
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5
app/src/main/java/io/legado/app/model/analyzeRule/QueryTTF.java
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@ -648,6 +648,8 @@ public class QueryTTF {
var reader = new BufferReader(buffer, dataTable.offset);
if (head.indexToLocFormat == 0) {
loca = reader.ReadUInt16Array(dataTable.length / 2);
// 当loca表数据长度为Uint16时,需要翻倍
for (var i = 0; i < loca.length; i++) loca[i] *= 2;
} else {
loca = reader.ReadInt32Array(dataTable.length / 4);
}
@ -781,11 +783,14 @@ public class QueryTTF {
var glyph = new GlyfLayout();
reader.position(offset);
glyph.numberOfContours = reader.ReadInt16();
if (glyph.numberOfContours > maxp.maxContours) continue; // 如果字形轮廓数大于非复合字形中包含的最大轮廓数，则说明该字形无效。
glyph.xMin = reader.ReadInt16();
glyph.yMin = reader.ReadInt16();
glyph.xMax = reader.ReadInt16();
glyph.yMax = reader.ReadInt16();
// 轮廓数为0时，不需要解析轮廓数据
if (glyph.numberOfContours == 0) continue;
// 读Glyph轮廓数据
if (glyph.numberOfContours > 0) {
// 简单轮廓