zint/backend/emf.c

/*  emf.c - Support for Microsoft Enhanced Metafile Format

    libzint - the open source barcode library
    Copyright (C) 2016 - 2021 Robin Stuart <rstuart114@gmail.com>

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:

    1. Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.
    2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.
    3. Neither the name of the project nor the names of its contributors
       may be used to endorse or promote products derived from this software
       without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    SUCH DAMAGE.
 */
/* vim: set ts=4 sw=4 et : */

/* Developed according to [MS-EMF] - v20160714, Released July 14, 2016
 * and [MS-WMF] - v20160714, Released July 14, 2016 */

#include <errno.h>
#include <stdio.h>
#include <assert.h>
#include <math.h>
#ifdef _MSC_VER
#include <io.h>
#include <fcntl.h>
#include <malloc.h>
#endif
#include "common.h"
#include "emf.h"

static int count_rectangles(struct zint_symbol *symbol) {
    int rectangles = 0;
    struct zint_vector_rect *rect;

    rect = symbol->vector->rectangles;
    while (rect) {
        rectangles++;
        rect = rect->next;
    }

    return rectangles;
}

static int count_circles(struct zint_symbol *symbol) {
    int circles = 0;
    struct zint_vector_circle *circ;

    circ = symbol->vector->circles;
    while (circ) {
        circles++;
        circ = circ->next;
    }

    return circles;
}

static int count_hexagons(struct zint_symbol *symbol) {
    int hexagons = 0;
    struct zint_vector_hexagon *hex;

    hex = symbol->vector->hexagons;
    while (hex) {
        hexagons++;
        hex = hex->next;
    }

    return hexagons;
}

static int count_strings(struct zint_symbol *symbol, float *fsize, float *fsize2, int *halign, int *halign1,
            int *halign2) {
    int strings = 0;
    struct zint_vector_string *str;

    *fsize = *fsize2 = 0.0f;
    *halign = *halign1 = *halign2 = 0;

    str = symbol->vector->strings;
    while (str) {
        /* Allow 2 font sizes */
        if (*fsize == 0.0f) {
            *fsize = str->fsize;
        } else if (str->fsize != *fsize && *fsize2 == 0.0f) {
            *fsize2 = str->fsize;
        }
        /* Only 3 haligns possible */
        if (str->halign) {
            if (str->halign == 1) {
                *halign1 = str->halign;
            } else {
                *halign2 = str->halign;
            }
        }
        strings++;
        str = str->next;
    }

    return strings;
}

static void utfle_copy(unsigned char *output, unsigned char *input, int length) {
    int i;
    int o;

    /* Convert UTF-8 to UTF-16LE - only needs to handle characters <= U+00FF */
    i = 0;
    o = 0;
    do {
        if (input[i] <= 0x7f) {
            /* 1 byte mode (7-bit ASCII) */
            output[o] = input[i];
            output[o + 1] = 0x00;
            o += 2;
            i++;
        } else {
            /* 2 byte mode */
            output[o] = ((input[i] & 0x1f) << 6) + (input[i + 1] & 0x3f);
            output[o + 1] = 0x00;
            o += 2;
            i += 2;
        }
    } while (i < length);
}

static int bump_up(int input) {
    /* Strings length must be a multiple of 4 bytes */
    if ((input & 1) == 1) {
        input++;
    }
    return input;
}

static int utfle_length(unsigned char *input, int length) {
    int result = 0;
    int i;

    for (i = 0; i < length; i++) {
        result++;
        if (input[i] >= 0x80) { /* 2 byte UTF-8 counts as one UTF-16LE character */
            i++;
        }
    }

    return result;
}

INTERNAL int emf_plot(struct zint_symbol *symbol, int rotate_angle) {
    int i;
    FILE *emf_file;
    int fgred, fggrn, fgblu, bgred, bggrn, bgblu;
    int error_number = 0;
    int rectangle_count, this_rectangle;
    int circle_count, this_circle;
    int hexagon_count, this_hexagon;
    int string_count, this_text;
    int bytecount, recordcount;
    float previous_diameter;
    float radius, half_radius, half_sqrt3_radius;
    int colours_used = 0;
    int rectangle_bycolour[9] = {0};

    int width, height;
    int draw_background = 1;
    int bold;
    const int output_to_stdout = symbol->output_options & BARCODE_STDOUT;

    struct zint_vector_rect *rect;
    struct zint_vector_circle *circ;
    struct zint_vector_hexagon *hex;
    struct zint_vector_string *str;

    /* Allow for up to 6 strings (current max 3 for UPC/EAN) */
    unsigned char *this_string[6];
    emr_exttextoutw_t text[6];
    float text_fsizes[6];
    int text_haligns[6];

    emr_header_t emr_header;
    emr_eof_t emr_eof;
    emr_mapmode_t emr_mapmode;
    emr_setworldtransform_t emr_setworldtransform;
    emr_createbrushindirect_t emr_createbrushindirect_fg;
    emr_createbrushindirect_t emr_createbrushindirect_bg;
    emr_createbrushindirect_t emr_createbrushindirect_colour[9]; // Used for colour symbols only
    emr_selectobject_t emr_selectobject_fgbrush;
    emr_selectobject_t emr_selectobject_bgbrush;
    emr_selectobject_t emr_selectobject_colour[9]; // Used for colour symbols only
    emr_createpen_t emr_createpen;
    emr_selectobject_t emr_selectobject_pen;
    emr_rectangle_t background;
    emr_settextcolor_t emr_settextcolor;

    float fsize;
    emr_extcreatefontindirectw_t emr_extcreatefontindirectw;
    emr_selectobject_t emr_selectobject_font;
    float fsize2;
    emr_extcreatefontindirectw_t emr_extcreatefontindirectw2;
    emr_selectobject_t emr_selectobject_font2;
    int halign;
    emr_settextalign_t emr_settextalign;
    int halign1;
    emr_settextalign_t emr_settextalign1;
    int halign2;
    emr_settextalign_t emr_settextalign2;

    float current_fsize;
    int current_halign;

#ifdef _MSC_VER
    emr_rectangle_t *rectangle;
    emr_ellipse_t *circle;
    emr_polygon_t *hexagon;
#endif

    if (symbol->vector == NULL) {
        strcpy(symbol->errtxt, "643: Vector header NULL");
        return ZINT_ERROR_INVALID_DATA;
    }

    fgred = (16 * ctoi(symbol->fgcolour[0])) + ctoi(symbol->fgcolour[1]);
    fggrn = (16 * ctoi(symbol->fgcolour[2])) + ctoi(symbol->fgcolour[3]);
    fgblu = (16 * ctoi(symbol->fgcolour[4])) + ctoi(symbol->fgcolour[5]);
    bgred = (16 * ctoi(symbol->bgcolour[0])) + ctoi(symbol->bgcolour[1]);
    bggrn = (16 * ctoi(symbol->bgcolour[2])) + ctoi(symbol->bgcolour[3]);
    bgblu = (16 * ctoi(symbol->bgcolour[4])) + ctoi(symbol->bgcolour[5]);

    if (strlen(symbol->bgcolour) > 6) {
        if ((ctoi(symbol->bgcolour[6]) == 0) && (ctoi(symbol->bgcolour[7]) == 0)) {
            draw_background = 0;
        }
    }

    rectangle_count = count_rectangles(symbol);
    circle_count = count_circles(symbol);
    hexagon_count = count_hexagons(symbol);
    string_count = count_strings(symbol, &fsize, &fsize2, &halign, &halign1, &halign2);

#ifndef _MSC_VER
    // Avoid sanitize runtime error by making always non-zero
    emr_rectangle_t rectangle[rectangle_count ? rectangle_count : 1];
    emr_ellipse_t circle[circle_count ? circle_count : 1];
    emr_polygon_t hexagon[hexagon_count ? hexagon_count : 1];
#else
    rectangle = (emr_rectangle_t*) _alloca(rectangle_count * sizeof(emr_rectangle_t));
    circle = (emr_ellipse_t*) _alloca(circle_count * sizeof(emr_ellipse_t));
    hexagon = (emr_polygon_t*) _alloca(hexagon_count * sizeof(emr_polygon_t));
#endif

    // Calculate how many coloured rectangles
    if (symbol->symbology == BARCODE_ULTRA) {

        rect = symbol->vector->rectangles;
        while (rect) {
            if (rect->colour == -1) { /* Foreground colour */
                if (rectangle_bycolour[0] == 0) {
                    colours_used++;
                    rectangle_bycolour[0] = 1;
                }
            } else {
                if (rectangle_bycolour[rect->colour] == 0) {
                    colours_used++;
                    rectangle_bycolour[rect->colour] = 1;
                }
            }
            rect = rect->next;
        }
    }

    width = (int) ceilf(symbol->vector->width);
    height = (int) ceilf(symbol->vector->height);

    /* Header */
    emr_header.type = 0x00000001; // EMR_HEADER
    emr_header.size = 108; // Including extensions
    emr_header.emf_header.bounds.left = 0;
    emr_header.emf_header.bounds.right = rotate_angle == 90 || rotate_angle == 270 ? height : width;
    emr_header.emf_header.bounds.bottom = rotate_angle == 90 || rotate_angle == 270 ? width : height;
    emr_header.emf_header.bounds.top = 0;
    emr_header.emf_header.frame.left = 0;
    emr_header.emf_header.frame.right = emr_header.emf_header.bounds.right * 30;
    emr_header.emf_header.frame.top = 0;
    emr_header.emf_header.frame.bottom = emr_header.emf_header.bounds.bottom * 30;
    emr_header.emf_header.record_signature = 0x464d4520; // ENHMETA_SIGNATURE
    emr_header.emf_header.version = 0x00010000;
    if (symbol->symbology == BARCODE_ULTRA) {
        emr_header.emf_header.handles = 12; // Number of graphics objects
    } else {
        emr_header.emf_header.handles = fsize2 != 0.0f ? 5 : 4;
    }
    emr_header.emf_header.reserved = 0x0000;
    emr_header.emf_header.n_description = 0;
    emr_header.emf_header.off_description = 0;
    emr_header.emf_header.n_pal_entries = 0;
    emr_header.emf_header.device.cx = 1000;
    emr_header.emf_header.device.cy = 1000;
    emr_header.emf_header.millimeters.cx = 300;
    emr_header.emf_header.millimeters.cy = 300;
    /* HeaderExtension1 */
    emr_header.emf_header.cb_pixel_format = 0x0000; // None set
    emr_header.emf_header.off_pixel_format = 0x0000; // None set
    emr_header.emf_header.b_open_gl = 0x0000; // OpenGL not present
    /* HeaderExtension2 */
    emr_header.emf_header.micrometers.cx = 0;
    emr_header.emf_header.micrometers.cy = 0;
    bytecount = 108;
    recordcount = 1;

    emr_mapmode.type = 0x00000011; // EMR_SETMAPMODE
    emr_mapmode.size = 12;
    emr_mapmode.mapmode = 0x01; // MM_TEXT
    bytecount += 12;
    recordcount++;

    if (rotate_angle) {
        emr_setworldtransform.type = 0x00000023; // EMR_SETWORLDTRANSFORM
        emr_setworldtransform.size = 32;
        emr_setworldtransform.m11 = rotate_angle == 90 ? 0.0f : rotate_angle == 180 ? -1.0f : 0.0f;
        emr_setworldtransform.m12 = rotate_angle == 90 ? 1.0f : rotate_angle == 180 ? 0.0f : -1.0f;
        emr_setworldtransform.m21 = rotate_angle == 90 ? -1.0f : rotate_angle == 180 ? 0.0f : 1.0f;
        emr_setworldtransform.m22 = rotate_angle == 90 ? 0.0f : rotate_angle == 180 ? -1.0f : 0.0f;
        emr_setworldtransform.dx = rotate_angle == 90 ? height : rotate_angle == 180 ? width : 0.0f;
        emr_setworldtransform.dy = rotate_angle == 90 ? 0.0f : rotate_angle == 180 ? height : width;
        bytecount += 32;
        recordcount++;
    }

    /* Create Brushes */
    emr_createbrushindirect_bg.type = 0x00000027; // EMR_CREATEBRUSHINDIRECT
    emr_createbrushindirect_bg.size = 24;
    emr_createbrushindirect_bg.ih_brush = 1;
    emr_createbrushindirect_bg.log_brush.brush_style = 0x0000; // BS_SOLID
    emr_createbrushindirect_bg.log_brush.color.red = bgred;
    emr_createbrushindirect_bg.log_brush.color.green = bggrn;
    emr_createbrushindirect_bg.log_brush.color.blue = bgblu;
    emr_createbrushindirect_bg.log_brush.color.reserved = 0;
    emr_createbrushindirect_bg.log_brush.brush_hatch = 0x0006; // HS_SOLIDCLR
    bytecount += 24;
    recordcount++;

    if (symbol->symbology == BARCODE_ULTRA) {
        for (i = 0; i < 9; i++) {
            emr_createbrushindirect_colour[i].type = 0x00000027; // EMR_CREATEBRUSHINDIRECT
            emr_createbrushindirect_colour[i].size = 24;
            emr_createbrushindirect_colour[i].ih_brush = 2 + i;
            emr_createbrushindirect_colour[i].log_brush.brush_style = 0x0000; // BS_SOLID
            if (i == 0) {
                emr_createbrushindirect_colour[i].log_brush.color.red = fgred;
                emr_createbrushindirect_colour[i].log_brush.color.green = fggrn;
                emr_createbrushindirect_colour[i].log_brush.color.blue = fgblu;
            } else {
                emr_createbrushindirect_colour[i].log_brush.color.red = colour_to_red(i);
                emr_createbrushindirect_colour[i].log_brush.color.green = colour_to_green(i);
                emr_createbrushindirect_colour[i].log_brush.color.blue = colour_to_blue(i);
            }
            emr_createbrushindirect_colour[i].log_brush.color.reserved = 0;
            emr_createbrushindirect_colour[i].log_brush.brush_hatch = 0x0006; // HS_SOLIDCLR
        }
        bytecount += colours_used * 24;
        recordcount += colours_used;
    } else {
        emr_createbrushindirect_fg.type = 0x00000027; // EMR_CREATEBRUSHINDIRECT
        emr_createbrushindirect_fg.size = 24;
        emr_createbrushindirect_fg.ih_brush = 2;
        emr_createbrushindirect_fg.log_brush.brush_style = 0x0000; // BS_SOLID
        emr_createbrushindirect_fg.log_brush.color.red = fgred;
        emr_createbrushindirect_fg.log_brush.color.green = fggrn;
        emr_createbrushindirect_fg.log_brush.color.blue = fgblu;
        emr_createbrushindirect_fg.log_brush.color.reserved = 0;
        emr_createbrushindirect_fg.log_brush.brush_hatch = 0x0006; // HS_SOLIDCLR
        bytecount += 24;
        recordcount++;
    }

    emr_selectobject_bgbrush.type = 0x00000025; // EMR_SELECTOBJECT
    emr_selectobject_bgbrush.size = 12;
    emr_selectobject_bgbrush.ih_object = 1;
    bytecount += 12;
    recordcount++;

    if (symbol->symbology == BARCODE_ULTRA) {
        for (i = 0; i < 9; i++) {
            emr_selectobject_colour[i].type = 0x00000025; // EMR_SELECTOBJECT
            emr_selectobject_colour[i].size = 12;
            emr_selectobject_colour[i].ih_object = 2 + i;
        }
        bytecount += colours_used * 12;
        recordcount += colours_used;
    } else {
        emr_selectobject_fgbrush.type = 0x00000025; // EMR_SELECTOBJECT
        emr_selectobject_fgbrush.size = 12;
        emr_selectobject_fgbrush.ih_object = 2;
        bytecount += 12;
        recordcount++;
    }

    /* Create Pens */
    emr_createpen.type = 0x00000026; // EMR_CREATEPEN
    emr_createpen.size = 28;
    emr_createpen.ih_pen = 11;
    emr_createpen.log_pen.pen_style = 0x00000005; // PS_NULL
    emr_createpen.log_pen.width.x = 1;
    emr_createpen.log_pen.width.y = 0; // ignored
    emr_createpen.log_pen.color_ref.red = 0;
    emr_createpen.log_pen.color_ref.green = 0;
    emr_createpen.log_pen.color_ref.blue = 0;
    emr_createpen.log_pen.color_ref.reserved = 0;
    bytecount += 28;
    recordcount++;

    emr_selectobject_pen.type = 0x00000025; // EMR_SELECTOBJECT
    emr_selectobject_pen.size = 12;
    emr_selectobject_pen.ih_object = 11;
    bytecount += 12;
    recordcount++;

    if (draw_background) {
        /* Make background from a rectangle */
        background.type = 0x0000002b; // EMR_RECTANGLE
        background.size = 24;
        background.box.top = 0;
        background.box.left = 0;
        background.box.right = emr_header.emf_header.bounds.right;
        background.box.bottom = emr_header.emf_header.bounds.bottom;
        bytecount += 24;
        recordcount++;
    }

    // Rectangles
    rect = symbol->vector->rectangles;
    this_rectangle = 0;
    while (rect) {
        rectangle[this_rectangle].type = 0x0000002b; // EMR_RECTANGLE
        rectangle[this_rectangle].size = 24;
        rectangle[this_rectangle].box.top = (int32_t) rect->y;
        rectangle[this_rectangle].box.bottom = (int32_t) (rect->y + rect->height);
        rectangle[this_rectangle].box.left = (int32_t) rect->x;
        rectangle[this_rectangle].box.right = (int32_t) (rect->x + rect->width);
        this_rectangle++;
        bytecount += 24;
        recordcount++;
        rect = rect->next;
    }

    // Circles
    previous_diameter = radius = 0.0f;
    circ = symbol->vector->circles;
    this_circle = 0;
    while (circ) {
        if (previous_diameter != circ->diameter) {
            previous_diameter = circ->diameter;
            radius = (float) (0.5 * previous_diameter);
        }
        circle[this_circle].type = 0x0000002a; // EMR_ELLIPSE
        circle[this_circle].size = 24;
        circle[this_circle].box.top = (int32_t) (circ->y - radius);
        circle[this_circle].box.bottom = (int32_t) (circ->y + radius);
        circle[this_circle].box.left = (int32_t) (circ->x - radius);
        circle[this_circle].box.right = (int32_t) (circ->x + radius);
        this_circle++;
        bytecount += 24;
        recordcount++;
        circ = circ->next;
    }

    // Hexagons
    previous_diameter = radius = half_radius = half_sqrt3_radius = 0.0f;
    hex = symbol->vector->hexagons;
    this_hexagon = 0;
    while (hex) {
        hexagon[this_hexagon].type = 0x00000003; // EMR_POLYGON
        hexagon[this_hexagon].size = 76;
        hexagon[this_hexagon].count = 6;

        if (previous_diameter != hex->diameter) {
            previous_diameter = hex->diameter;
            radius = (float) (0.5 * previous_diameter);
            half_radius = (float) (0.25 * previous_diameter);
            half_sqrt3_radius = (float) (0.43301270189221932338 * previous_diameter);
        }

        /* Note rotation done via world transform */
        hexagon[this_hexagon].a_points_a.x = (int32_t) (hex->x);
        hexagon[this_hexagon].a_points_a.y = (int32_t) (hex->y + radius);
        hexagon[this_hexagon].a_points_b.x = (int32_t) (hex->x + half_sqrt3_radius);
        hexagon[this_hexagon].a_points_b.y = (int32_t) (hex->y + half_radius);
        hexagon[this_hexagon].a_points_c.x = (int32_t) (hex->x + half_sqrt3_radius);
        hexagon[this_hexagon].a_points_c.y = (int32_t) (hex->y - half_radius);
        hexagon[this_hexagon].a_points_d.x = (int32_t) (hex->x);
        hexagon[this_hexagon].a_points_d.y = (int32_t) (hex->y - radius);
        hexagon[this_hexagon].a_points_e.x = (int32_t) (hex->x - half_sqrt3_radius);
        hexagon[this_hexagon].a_points_e.y = (int32_t) (hex->y - half_radius);
        hexagon[this_hexagon].a_points_f.x = (int32_t) (hex->x - half_sqrt3_radius);
        hexagon[this_hexagon].a_points_f.y = (int32_t) (hex->y + half_radius);

        hexagon[this_hexagon].bounds.top = hexagon[this_hexagon].a_points_d.y;
        hexagon[this_hexagon].bounds.bottom = hexagon[this_hexagon].a_points_a.y;
        hexagon[this_hexagon].bounds.left = hexagon[this_hexagon].a_points_e.x;
        hexagon[this_hexagon].bounds.right = hexagon[this_hexagon].a_points_c.x;
        this_hexagon++;
        bytecount += 76;
        recordcount++;
        hex = hex->next;
    }

    /* Create font records, alignment records and text color */
    if (symbol->vector->strings) {
        bold = (symbol->output_options & BOLD_TEXT) &&
                (!is_extendable(symbol->symbology) || (symbol->output_options & SMALL_TEXT));
        memset(&emr_extcreatefontindirectw, 0, sizeof(emr_extcreatefontindirectw));
        emr_extcreatefontindirectw.type = 0x00000052; // EMR_EXTCREATEFONTINDIRECTW
        emr_extcreatefontindirectw.size = 104;
        emr_extcreatefontindirectw.ih_fonts = 12;
        emr_extcreatefontindirectw.elw.height = (int32_t) fsize;
        emr_extcreatefontindirectw.elw.width = 0; // automatic
        emr_extcreatefontindirectw.elw.weight = bold ? 700 : 400;
        emr_extcreatefontindirectw.elw.char_set = 0x00; // ANSI_CHARSET
        emr_extcreatefontindirectw.elw.out_precision = 0x00; // OUT_DEFAULT_PRECIS
        emr_extcreatefontindirectw.elw.clip_precision = 0x00; // CLIP_DEFAULT_PRECIS
        emr_extcreatefontindirectw.elw.pitch_and_family = 0x02 | (0x02 << 6); // FF_SWISS | VARIABLE_PITCH
        utfle_copy(emr_extcreatefontindirectw.elw.facename, (unsigned char *) "sans-serif", 10);
        bytecount += 104;
        recordcount++;

        emr_selectobject_font.type = 0x00000025; // EMR_SELECTOBJECT
        emr_selectobject_font.size = 12;
        emr_selectobject_font.ih_object = 12;
        bytecount += 12;
        recordcount++;

        if (fsize2) {
            memcpy(&emr_extcreatefontindirectw2, &emr_extcreatefontindirectw, sizeof(emr_extcreatefontindirectw));
            emr_extcreatefontindirectw2.ih_fonts = 13;
            emr_extcreatefontindirectw2.elw.height = (int32_t) fsize2;
            bytecount += 104;
            recordcount++;

            emr_selectobject_font2.type = 0x00000025; // EMR_SELECTOBJECT
            emr_selectobject_font2.size = 12;
            emr_selectobject_font2.ih_object = 13;
            bytecount += 12;
            recordcount++;
        }

        /* Note select aligns counted below in strings loop */

        emr_settextalign.type = 0x00000016; // EMR_SETTEXTALIGN
        emr_settextalign.size = 12;
        emr_settextalign.text_alignment_mode = 0x0006 | 0x0018; // TA_CENTER | TA_BASELINE
        if (halign1) {
            emr_settextalign1.type = 0x00000016; // EMR_SETTEXTALIGN
            emr_settextalign1.size = 12;
            emr_settextalign1.text_alignment_mode = 0x0000 | 0x0018; // TA_LEFT | TA_BASELINE
        }
        if (halign2) {
            emr_settextalign2.type = 0x00000016; // EMR_SETTEXTALIGN
            emr_settextalign2.size = 12;
            emr_settextalign2.text_alignment_mode = 0x0002 | 0x0018; // TA_RIGHT | TA_BASELINE
        }

        emr_settextcolor.type = 0x0000018; // EMR_SETTEXTCOLOR
        emr_settextcolor.size = 12;
        emr_settextcolor.color.red = fgred;
        emr_settextcolor.color.green = fggrn;
        emr_settextcolor.color.blue = fgblu;
        emr_settextcolor.color.reserved = 0;
        bytecount += 12;
        recordcount++;
    }

    // Text
    this_text = 0;
    // Loop over font sizes so that they're grouped together, so only have to select font twice at most
    for (i = 0, current_fsize = fsize; i < 2 && current_fsize; i++, current_fsize = fsize2) {
        str = symbol->vector->strings;
        current_halign = -1;
        while (str) {
            int utfle_len;
            int bumped_len;
            if (str->fsize != current_fsize) {
                str = str->next;
                continue;
            }
            text_fsizes[this_text] = str->fsize;
            text_haligns[this_text] = str->halign;
            if (text_haligns[this_text] != current_halign) {
                current_halign = text_haligns[this_text];
                bytecount += 12;
                recordcount++;
            }
            assert(str->length > 0);
            utfle_len = utfle_length(str->text, str->length);
            bumped_len = bump_up(utfle_len) * 2;
            if (!(this_string[this_text] = (unsigned char *) malloc(bumped_len))) {
                for (i = 0; i < this_text; i++) {
                    free(this_string[i]);
                }
                strcpy(symbol->errtxt, "641: Insufficient memory for EMF string buffer");
                return ZINT_ERROR_MEMORY;
            }
            memset(this_string[this_text], 0, bumped_len);
            text[this_text].type = 0x00000054; // EMR_EXTTEXTOUTW
            text[this_text].size = 76 + bumped_len;
            text[this_text].bounds.top = 0; // ignored
            text[this_text].bounds.left = 0; // ignored
            text[this_text].bounds.right = 0xffffffff; // ignored
            text[this_text].bounds.bottom = 0xffffffff; // ignored
            text[this_text].i_graphics_mode = 0x00000002; // GM_ADVANCED
            text[this_text].ex_scale = 1.0f;
            text[this_text].ey_scale = 1.0f;
            text[this_text].w_emr_text.reference.x = (int32_t) str->x;
            text[this_text].w_emr_text.reference.y = (int32_t) str->y;
            text[this_text].w_emr_text.chars = utfle_len;
            text[this_text].w_emr_text.off_string = 76;
            text[this_text].w_emr_text.options = 0;
            text[this_text].w_emr_text.rectangle.top = 0;
            text[this_text].w_emr_text.rectangle.left = 0;
            text[this_text].w_emr_text.rectangle.right = 0xffffffff;
            text[this_text].w_emr_text.rectangle.bottom = 0xffffffff;
            text[this_text].w_emr_text.off_dx = 0;
            utfle_copy(this_string[this_text], str->text, str->length);
            bytecount += 76 + bumped_len;
            recordcount++;

            this_text++;
            str = str->next;
        }
    }
    /* Suppress clang-tidy clang-analyzer-core.UndefinedBinaryOperatorResult warning */
    assert(this_text == string_count);

    /* Create EOF record */
    emr_eof.type = 0x0000000e; // EMR_EOF
    emr_eof.size = 20; // Assuming no palette entries
    emr_eof.n_pal_entries = 0;
    emr_eof.off_pal_entries = 0;
    emr_eof.size_last = emr_eof.size;
    bytecount += 20;
    recordcount++;

    if (symbol->symbology == BARCODE_MAXICODE) {
        bytecount += 5 * sizeof(emr_selectobject_t);
        recordcount += 5;
    }

    /* Put final counts in header */
    emr_header.emf_header.bytes = bytecount;
    emr_header.emf_header.records = recordcount;

    /* Send EMF data to file */
    if (output_to_stdout) {
#ifdef _MSC_VER
        if (-1 == _setmode(_fileno(stdout), _O_BINARY)) {
            sprintf(symbol->errtxt, "642: Could not set stdout to binary (%d: %.30s)", errno, strerror(errno));
            return ZINT_ERROR_FILE_ACCESS;
        }
#endif
        emf_file = stdout;
    } else {
        if (!(emf_file = fopen(symbol->outfile, "wb"))) {
            sprintf(symbol->errtxt, "640: Could not open output file (%d: %.30s)", errno, strerror(errno));
            return ZINT_ERROR_FILE_ACCESS;
        }
    }

    fwrite(&emr_header, sizeof(emr_header_t), 1, emf_file);

    fwrite(&emr_mapmode, sizeof(emr_mapmode_t), 1, emf_file);

    if (rotate_angle) {
        fwrite(&emr_setworldtransform, sizeof(emr_setworldtransform_t), 1, emf_file);
    }

    fwrite(&emr_createbrushindirect_bg, sizeof(emr_createbrushindirect_t), 1, emf_file);

    if (symbol->symbology == BARCODE_ULTRA) {
        for (i = 0; i < 9; i++) {
            if (rectangle_bycolour[i]) {
                fwrite(&emr_createbrushindirect_colour[i], sizeof(emr_createbrushindirect_t), 1, emf_file);
            }
        }
    } else {
        fwrite(&emr_createbrushindirect_fg, sizeof(emr_createbrushindirect_t), 1, emf_file);
    }

    fwrite(&emr_createpen, sizeof(emr_createpen_t), 1, emf_file);

    if (symbol->vector->strings) {
        fwrite(&emr_extcreatefontindirectw, sizeof(emr_extcreatefontindirectw_t), 1, emf_file);
        if (fsize2) {
            fwrite(&emr_extcreatefontindirectw2, sizeof(emr_extcreatefontindirectw_t), 1, emf_file);
        }
    }

    fwrite(&emr_selectobject_bgbrush, sizeof(emr_selectobject_t), 1, emf_file);
    fwrite(&emr_selectobject_pen, sizeof(emr_selectobject_t), 1, emf_file);
    if (draw_background) {
        fwrite(&background, sizeof(emr_rectangle_t), 1, emf_file);
    }

    if (symbol->symbology == BARCODE_ULTRA) {
        for (i = 0; i < 9; i++) {
            if (rectangle_bycolour[i]) {
                fwrite(&emr_selectobject_colour[i], sizeof(emr_selectobject_t), 1, emf_file);

                rect = symbol->vector->rectangles;
                this_rectangle = 0;
                while (rect) {
                    if ((i == 0 && rect->colour == -1) || rect->colour == i) {
                        fwrite(&rectangle[this_rectangle], sizeof(emr_rectangle_t), 1, emf_file);
                    }
                    this_rectangle++;
                    rect = rect->next;
                }
            }
        }
    } else {
        fwrite(&emr_selectobject_fgbrush, sizeof(emr_selectobject_t), 1, emf_file);

        // Rectangles
        for (i = 0; i < rectangle_count; i++) {
            fwrite(&rectangle[i], sizeof(emr_rectangle_t), 1, emf_file);
        }
    }

    // Hexagons
    for (i = 0; i < hexagon_count; i++) {
        fwrite(&hexagon[i], sizeof(emr_polygon_t), 1, emf_file);
    }

    // Circles
    if (symbol->symbology == BARCODE_MAXICODE) {
        // Bullseye needed
        for (i = 0; i < circle_count; i++) {
            fwrite(&circle[i], sizeof(emr_ellipse_t), 1, emf_file);
            if (i < circle_count - 1) {
                if (i % 2) {
                    fwrite(&emr_selectobject_fgbrush, sizeof(emr_selectobject_t), 1, emf_file);
                } else {
                    fwrite(&emr_selectobject_bgbrush, sizeof(emr_selectobject_t), 1, emf_file);
                }
            }
        }
    } else {
        for (i = 0; i < circle_count; i++) {
            fwrite(&circle[i], sizeof(emr_ellipse_t), 1, emf_file);
        }
    }

    // Text
    if (string_count > 0) {
        fwrite(&emr_selectobject_font, sizeof(emr_selectobject_t), 1, emf_file);
        fwrite(&emr_settextcolor, sizeof(emr_settextcolor_t), 1, emf_file);
    }

    current_fsize = fsize;
    current_halign = -1;
    for (i = 0; i < string_count; i++) {
        if (text_fsizes[i] != current_fsize) {
            current_fsize = text_fsizes[i];
            fwrite(&emr_selectobject_font2, sizeof(emr_selectobject_t), 1, emf_file);
        }
        if (text_haligns[i] != current_halign) {
            current_halign = text_haligns[i];
            if (current_halign == 0) {
                fwrite(&emr_settextalign, sizeof(emr_settextalign_t), 1, emf_file);
            } else if (current_halign == 1) {
                fwrite(&emr_settextalign1, sizeof(emr_settextalign_t), 1, emf_file);
            } else {
                fwrite(&emr_settextalign2, sizeof(emr_settextalign_t), 1, emf_file);
            }
        }
        fwrite(&text[i], sizeof(emr_exttextoutw_t), 1, emf_file);
        fwrite(this_string[i], bump_up(text[i].w_emr_text.chars) * 2, 1, emf_file);
        free(this_string[i]);
    }

    fwrite(&emr_eof, sizeof(emr_eof_t), 1, emf_file);

    if (output_to_stdout) {
        fflush(emf_file);
    } else {
        fclose(emf_file);
    }
    return error_number;
}