101 lines
2.5 KiB
C
101 lines
2.5 KiB
C
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/**
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* xrdp: A Remote Desktop Protocol server.
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*
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* Copyright (C) Jay Sorg 2004-2022
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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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*/
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/**
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* @file fontutils/fv1.h
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* @brief Definitions relating to fv1 font files
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*/
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#if !defined(FV1_H)
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#define FV1_H
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struct list;
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#define FV1_DEVICE_DPI 96
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#define FV1_MIN_CHAR 0x20 /* First character value in file */
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#define FV1_MIN_FILE_SIZE 48
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#define FV1_MAX_FILE_SIZE (10 * 1024 * 1024)
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#define FV1_MAX_FONT_NAME_SIZE 32
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#define FV1_MAX_GLYPH_DATASIZE 512
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struct fv1_glyph
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{
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unsigned short width; /* Width of glyph */
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unsigned short height; /* Height of glyph */
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short baseline; /* Offset from cursor pos to 1st row of glyph */
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short offset; /* Space before glyph (can be -ve) */
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unsigned short inc_by; /* Total width of glyph + spacing */
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/* Standard C++ does not yet support C99 flexible array members */
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#ifdef __cplusplus
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unsigned char data[1];
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#else
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unsigned char data[];
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#endif
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};
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struct fv1_file
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{
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char font_name[FV1_MAX_FONT_NAME_SIZE + 1];
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short point_size; /* Input point size (for reference) */
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short style;
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short body_height; /* Body height (pixels) */
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short min_descender; /* Min descender of the glyphs in the font */
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struct list *glyphs; /* Glyphs are struct fv1_glyph * */
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};
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/**
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* Get a glyph pointer for a unicode character
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*/
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#define FV1_GET_GLYPH(fv1,ucode) \
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(((ucode) < FV1_MIN_CHAR) \
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? NULL \
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: (struct fv1_glyph *)list_get_item(fv1->glyphs, (ucode) - FV1_MIN_CHAR))
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/**
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* First glyph not in file
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*/
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#define FV1_GLYPH_END(fv1) (fv1->glyphs->count + FV1_MIN_CHAR)
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struct fv1_file *
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fv1_file_load(const char *filename);
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void
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fv1_file_free(struct fv1_file *);
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struct fv1_file *
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fv1_file_create(void);
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struct fv1_glyph *
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fv1_alloc_glyph(int ucode, /* Unicode character for error reporting if known */
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unsigned short width,
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unsigned short height);
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enum fv1_realloc_mode
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{
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FV1_AT_TOP,
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FV1_AT_BOTTOM
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};
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int
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fv1_file_save(const struct fv1_file *fv1, const char *filename);
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#endif
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