mirror of
https://github.com/xiaoqidun/ofdgo.git
synced 2026-10-29 08:46:55 +08:00
65 lines
2.3 KiB
Go
65 lines
2.3 KiB
Go
// Copyright 2025-2026 肖其顿 (XIAO QI DUN)
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package ofdgo
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import (
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"bytes"
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basefont "github.com/xiaoqidun/ofdgo/internal/base/font"
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)
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// appendFontFileNames 建立各字体的内部名称与文件别名匹配候选
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// 入参: candidates 字体候选, index 文件候选索引, faces 各字体内部名称
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// 返回: []fontFileCandidate 字体候选列表
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func appendFontFileNames(candidates []fontFileCandidate, index int, faces [][]string) []fontFileCandidate {
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file := candidates[index]
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replaced := false
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for face, names := range faces {
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file.face = face
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file.names = make([]string, len(names))
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for i, name := range names {
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file.names[i] = basefont.NormalizeName(name)
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}
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for _, name := range file.names {
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file.normalized = name
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if !replaced {
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candidates[index] = file
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replaced = true
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} else {
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candidates = append(candidates, file)
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}
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}
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}
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return candidates
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}
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// fontCollectionIndex 按内部名称与样式选择集合项，未匹配时保留首项
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// 入参: data 集合数据, names 字体名称, bold 是否粗体, italic 是否斜体
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// 返回: int 零起始字体索引
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func fontCollectionIndex(data []byte, names []string, bold, italic bool) int {
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return fontNameIndex(basefont.FileNames(bytes.NewReader(data)), names, bold, italic)
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}
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// fontNameIndex 按名称与样式选择字体索引，未匹配时保留首项
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// 入参: faces 各字体名称, names 目标名称, bold 是否粗体, italic 是否斜体
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// 返回: int 零起始字体索引
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func fontNameIndex(faces [][]string, names []string, bold, italic bool) int {
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candidates := appendFontFileNames([]fontFileCandidate{{}}, 0, faces)
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if matches := fontFileMatches(candidates, names, bold, italic); len(matches) > 0 {
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return matches[0].face
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}
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return 0
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}
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