mirror of
https://github.com/zint/zint
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122 lines
5.6 KiB
C
122 lines
5.6 KiB
C
/* output.h - Common routines for raster/vector */
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/*
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libzint - the open source barcode library
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Copyright (C) 2020-2024 Robin Stuart <rstuart114@gmail.com>
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the project nor the names of its contributors
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may be used to endorse or promote products derived from this software
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without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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SUCH DAMAGE.
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*/
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/* SPDX-License-Identifier: BSD-3-Clause */
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#ifndef Z_OUTPUT_H
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#define Z_OUTPUT_H
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#include <stdio.h> /* For FILE */
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/* Check colour options are good (`symbol->fgcolour`, `symbol->bgcolour`) */
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INTERNAL int out_check_colour_options(struct zint_symbol *symbol);
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/* Return RGB(A) from (well-formed) colour string. Returns 0 if RGB or converted CMYK, 1 if RGBA */
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INTERNAL int out_colour_get_rgb(const char *colour, unsigned char *red, unsigned char *green, unsigned char *blue,
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unsigned char *alpha);
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/* Return CMYK from (well-formed) colour string. Returns 0 if CMYK, 1 if converted RBG, 2 if converted RGBA */
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INTERNAL int out_colour_get_cmyk(const char *colour, int *cyan, int *magenta, int *yellow, int *black,
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unsigned char *rgb_alpha);
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/* Convert internal colour chars "WCBMRYGK" to RGB */
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INTERNAL int out_colour_char_to_rgb(const char ch, unsigned char *red, unsigned char *green, unsigned char *blue);
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/* Set left (x), top (y), right and bottom offsets for whitespace, also right quiet zone */
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INTERNAL void out_set_whitespace_offsets(const struct zint_symbol *symbol, const int hide_text,
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const int comp_xoffset, float *p_xoffset, float *p_yoffset, float *p_roffset, float *p_boffset,
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float *p_qz_right, const float scaler, int *p_xoffset_si, int *p_yoffset_si, int *p_roffset_si,
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int *p_boffset_si, int *p_qz_right_si);
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/* Set composite offset and main width excluding add-on (for start of add-on calc) and add-on text, returning
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EAN/UPC type */
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INTERNAL int out_process_upcean(const struct zint_symbol *symbol, const int comp_xoffset, int *p_main_width,
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unsigned char addon[6], int *p_addon_len, int *p_addon_gap);
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/* Calculate large bar height i.e. linear bars with zero row height that respond to the symbol height.
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If scaler `si` non-zero (raster), then large_bar_height if non-zero or else row heights will be rounded
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to nearest pixel and symbol height adjusted */
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INTERNAL float out_large_bar_height(struct zint_symbol *symbol, const int si, int *row_heights_si,
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int *symbol_height_si);
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/* Create output file, creating sub-directories if necessary. Returns `fopen()` FILE pointer */
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INTERNAL FILE *out_fopen(const char filename[256], const char *mode);
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#ifdef _WIN32
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/* Do `fopen()` on Windows, assuming `filename` is UTF-8 encoded. Props Marcel, ticket #288 */
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INTERNAL FILE *out_win_fopen(const char *filename, const char *mode);
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#endif
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/* Little-endian output */
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#define out_le_u16(b, n) do { \
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unsigned char *bp = (unsigned char *) &(b); \
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uint16_t u16 = (uint16_t) (n); \
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bp[0] = (unsigned char) (u16 & 0xFF); \
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bp[1] = (unsigned char) ((u16 >> 8) & 0xFF); \
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} while (0)
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#define out_le_u32(b, n) do { \
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unsigned char *bp = (unsigned char *) &(b); \
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uint32_t u32 = (uint32_t) (n); \
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bp[0] = (unsigned char) (u32 & 0xFF); \
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bp[1] = (unsigned char) ((u32 >> 8) & 0xFF); \
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bp[2] = (unsigned char) ((u32 >> 16) & 0xFF); \
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bp[3] = (unsigned char) ((u32 >> 24) & 0xFF); \
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} while (0)
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#define out_le_i32(b, n) do { \
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unsigned char *bp = (unsigned char *) &(b); \
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int32_t i32 = (int32_t) (n); \
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bp[0] = (unsigned char) (i32 & 0xFF); \
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bp[1] = (unsigned char) ((i32 >> 8) & 0xFF); \
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bp[2] = (unsigned char) ((i32 >> 16) & 0xFF); \
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bp[3] = (unsigned char) ((i32 >> 24) & 0xFF); \
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} while (0)
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#define out_le_float(b, n) do { \
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unsigned char *bp = (unsigned char *) &(b); \
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float f = (float) (n); \
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uint32_t *p_u32 = (uint32_t *) &f; \
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bp[0] = (unsigned char) (*p_u32 & 0xFF); \
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bp[1] = (unsigned char) ((*p_u32 >> 8) & 0xFF); \
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bp[2] = (unsigned char) ((*p_u32 >> 16) & 0xFF); \
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bp[3] = (unsigned char) ((*p_u32 >> 24) & 0xFF); \
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} while (0)
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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/* vim: set ts=4 sw=4 et : */
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#endif /* Z_OUTPUT_H */
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