Font gets a particular font, specified by the official regularized font name (see FontsAvail list), at given dots size (integer), using a cache of loaded fonts.
(fontnm string, size int)
| 120 | // name (see FontsAvail list), at given dots size (integer), using a cache of |
| 121 | // loaded fonts. |
| 122 | func (fl *FontLib) Font(fontnm string, size int) (*styles.FontFace, error) { |
| 123 | fontnm = strings.ToLower(fontnm) |
| 124 | fl.Init() |
| 125 | loadFontMu.RLock() |
| 126 | if facemap := fl.Faces[fontnm]; facemap != nil { |
| 127 | if face := facemap[size]; face != nil { |
| 128 | // fmt.Printf("Got font face from cache: %v %v\n", fontnm, size) |
| 129 | loadFontMu.RUnlock() |
| 130 | return face, nil |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | path := fl.FontsAvail[fontnm] |
| 135 | if path == "" { |
| 136 | loadFontMu.RUnlock() |
| 137 | return nil, fmt.Errorf("girl/paint.FontLib: Font named: %v not found in list of available fonts; try adding to FontPaths in girl/paint.FontLibrary; searched FontLib.FontsFS and paths: %v", fontnm, fl.FontPaths) |
| 138 | } |
| 139 | |
| 140 | var bytes []byte |
| 141 | |
| 142 | if strings.HasPrefix(path, "fs://") { |
| 143 | b, err := fs.ReadFile(fl.FontsFS, strings.TrimPrefix(path, "fs://")) |
| 144 | if err != nil { |
| 145 | err = fmt.Errorf("error opening font file for font %q in FontsFS: %w", fontnm, err) |
| 146 | slog.Error(err.Error()) |
| 147 | return nil, err |
| 148 | } |
| 149 | bytes = b |
| 150 | } else { |
| 151 | b, err := os.ReadFile(path) |
| 152 | if err != nil { |
| 153 | err = fmt.Errorf("error opening font file for font %q with path %q: %w", fontnm, path, err) |
| 154 | slog.Error(err.Error()) |
| 155 | return nil, err |
| 156 | } |
| 157 | bytes = b |
| 158 | } |
| 159 | |
| 160 | loadFontMu.RUnlock() |
| 161 | loadFontMu.Lock() |
| 162 | face, err := OpenFontFace(bytes, fontnm, path, size, 0) |
| 163 | if err != nil || face == nil { |
| 164 | if err == nil { |
| 165 | err = fmt.Errorf("girl/paint.FontLib: nil face with no error for: %v", fontnm) |
| 166 | } |
| 167 | slog.Error("girl/paint.FontLib: error loading font, removed from list", "fontName", fontnm) |
| 168 | loadFontMu.Unlock() |
| 169 | fl.DeleteFont(fontnm) |
| 170 | return nil, err |
| 171 | } |
| 172 | facemap := fl.Faces[fontnm] |
| 173 | if facemap == nil { |
| 174 | facemap = make(map[int]*styles.FontFace) |
| 175 | fl.Faces[fontnm] = facemap |
| 176 | } |
| 177 | facemap[size] = face |
| 178 | // fmt.Printf("Opened font face: %v %v\n", fontnm, size) |
| 179 | loadFontMu.Unlock() |
no test coverage detected