xiaoqidun/ofdgo
1
0 Fork 0
mirror of https://github.com/xiaoqidun/ofdgo.git synced 2026-10-30 16:07:05 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

feat(渲染压缩): 完善字体三维动作导航及压缩
build.yaml / build (push) Successful in 46s
Details

Browse Source
This commit is contained in:
xiaoqidun committed 2026-10-08 01:06:43 +08:00
1 parent be5901100e
commit c8a163a077
35 files changed
+3045 -373
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

ofdgo_font_cmap.go
+32 -35
View File
@@ -435,7 +435,7 @@ func addPackedGlyphMapping(mapping map[rune]uint16, numGlyphs uint16) {
}
}
// buildCmapTable 构建cmap表 (Format 4)
// buildCmapTable 构建格式4或12字符映射，省略缺字映射
// 入参: numGlyphs 字形数量, mapping 字符映射
// 返回: []byte cmap表数据
func buildCmapTable(numGlyphs uint16, mapping map[rune]uint16) []byte {
@@ -444,15 +444,13 @@ func buildCmapTable(numGlyphs uint16, mapping map[rune]uint16) []byte {
}
var segs []cmapSegment
if mapping == nil {
end := uint16(0xFFFF)
if numGlyphs > 0 {
end = numGlyphs - 1
segs = append(segs, cmapSegment{start: 0, end: numGlyphs - 1, delta: 0, offset: 0})
}
segs = append(segs, cmapSegment{start: 0, end: end, delta: 0, offset: 0})
} else {
var codes []int
for r := range mapping {
if r <= 0xFFFF {
for r, gid := range mapping {
if r >= 0 && r <= 0xFFFF && gid != 0 {
codes = append(codes, int(r))
}
}
@@ -494,13 +492,13 @@ func buildCmapTable(numGlyphs uint16, mapping map[rune]uint16) []byte {
for _, s := range segs {
endCounts = append(endCounts, s.end)
startCounts = append(startCounts, s.start)
if mapping == nil {
idDeltas = append(idDeltas, 0)
if s.start == 0xFFFF {
idDeltas = append(idDeltas, 1)
idRangeOffsets = append(idRangeOffsets, 0)
continue
}
if s.start == 0xFFFF {
idDeltas = append(idDeltas, 1)
if mapping == nil {
idDeltas = append(idDeltas, 0)
idRangeOffsets = append(idRangeOffsets, 0)
continue
}
@@ -549,7 +547,10 @@ func shouldBuildCmapFormat12(mapping map[rune]uint16) bool {
return false
}
var codes []int
for r := range mapping {
for r, gid := range mapping {
if r < 0 || gid == 0 {
continue
}
if r >= 0xFFFF {
return true
}
@@ -588,8 +589,8 @@ func buildCmapTableFormat12(numGlyphs uint16, mapping map[rune]uint16) []byte {
codes = append(codes, i)
}
} else {
for r := range mapping {
if r >= 0 {
for r, gid := range mapping {
if r >= 0 && gid != 0 {
codes = append(codes, int(r))
}
}
@@ -617,7 +618,7 @@ func buildCmapTableFormat12(numGlyphs uint16, mapping map[rune]uint16) []byte {
if mapping != nil {
nextGID = mapping[nextRune]
}
if nextRune != prevRune+1 || nextGID != prevGID+1 {
if nextRune != prevRune+1 || uint32(nextGID) != uint32(prevGID)+1 {
break
}
group.endChar = uint32(nextRune)
@@ -627,26 +628,22 @@ func buildCmapTableFormat12(numGlyphs uint16, mapping map[rune]uint16) []byte {
}
groups = append(groups, group)
}
sub := new(bytes.Buffer)
binary.Write(sub, binary.BigEndian, uint16(12))
binary.Write(sub, binary.BigEndian, uint16(0))
binary.Write(sub, binary.BigEndian, uint32(16+12*len(groups)))
binary.Write(sub, binary.BigEndian, uint32(0))
binary.Write(sub, binary.BigEndian, uint32(len(groups)))
for _, group := range groups {
binary.Write(sub, binary.BigEndian, group.startChar)
binary.Write(sub, binary.BigEndian, group.endChar)
binary.Write(sub, binary.BigEndian, group.startGID)
data := make([]byte, 36+12*len(groups))
binary.BigEndian.PutUint16(data[2:], 2)
binary.BigEndian.PutUint16(data[6:], 4)
binary.BigEndian.PutUint32(data[8:], 20)
binary.BigEndian.PutUint16(data[12:], 3)
binary.BigEndian.PutUint16(data[14:], 10)
binary.BigEndian.PutUint32(data[16:], 20)
sub := data[20:]
binary.BigEndian.PutUint16(sub, 12)
binary.BigEndian.PutUint32(sub[4:], uint32(len(sub)))
binary.BigEndian.PutUint32(sub[12:], uint32(len(groups)))
for index, group := range groups {
position := 16 + 12*index
binary.BigEndian.PutUint32(sub[position:], group.startChar)
binary.BigEndian.PutUint32(sub[position+4:], group.endChar)
binary.BigEndian.PutUint32(sub[position+8:], group.startGID)
}
mainBuf := new(bytes.Buffer)
binary.Write(mainBuf, binary.BigEndian, uint16(0))
binary.Write(mainBuf, binary.BigEndian, uint16(2))
binary.Write(mainBuf, binary.BigEndian, uint16(0))
binary.Write(mainBuf, binary.BigEndian, uint16(4))
binary.Write(mainBuf, binary.BigEndian, uint32(20))
binary.Write(mainBuf, binary.BigEndian, uint16(3))
binary.Write(mainBuf, binary.BigEndian, uint16(10))
binary.Write(mainBuf, binary.BigEndian, uint32(20))
mainBuf.Write(sub.Bytes())
return mainBuf.Bytes()
return data
}