/* emf.c - Support for Microsoft Enhanced Metafile Format libzint - the open source barcode library Copyright (C) 2016 - 2020 Robin Stuart 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 #include #include #ifdef _MSC_VER #include #endif #include "common.h" #include "emf.h" int colour_to_red(int colour) { int return_val = 0; switch(colour) { case 0: // White case 3: // Magenta case 4: // Red case 5: // Yellow return_val = 255; break; } return return_val; } int colour_to_green(int colour) { int return_val = 0; switch(colour) { case 0: // White case 1: // Cyan case 5: // Yellow case 6: // Green return_val = 255; break; } return return_val; } int colour_to_blue(int colour) { int return_val = 0; switch(colour) { case 0: // White case 1: // Cyan case 2: // Blue case 3: // Magenta return_val = 255; break; } return return_val; } 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) { int strings = 0; struct zint_vector_string *str; str = symbol->vector->strings; while (str) { 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 % 2) == 1) { input++; } return input; } INTERNAL int emf_plot(struct zint_symbol *symbol) { int i,j; 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 radius; int colours_used = 0; int rectangle_count_bycolour[8]; unsigned char *this_string[6]; uint32_t spacing; float ax, ay, bx, by, cx, cy, dx, dy, ex, ey, fx, fy; struct zint_vector_rect *rect; struct zint_vector_circle *circ; struct zint_vector_hexagon *hex; struct zint_vector_string *str; emr_header_t emr_header; emr_eof_t emr_eof; emr_createbrushindirect_t emr_createbrushindirect_fg; emr_createbrushindirect_t emr_createbrushindirect_bg; emr_createbrushindirect_t emr_createbrushindirect_colour[8]; // Used for colour symbols only emr_selectobject_t emr_selectobject_fgbrush; emr_selectobject_t emr_selectobject_bgbrush; emr_selectobject_t emr_selectobject_colour[8]; // Used for colour symbols only emr_createpen_t emr_createpen; emr_selectobject_t emr_selectobject_pen; emr_rectangle_t background; emr_extcreatefontindirectw_t emr_extcreatefontindirectw; emr_selectobject_t emr_selectobject_font; //emr_extcreatefontindirectw_t emr_extcreatefontindirectw_big; //emr_selectobject_t emr_selectobject_font_big; #ifdef _MSC_VER emr_rectangle_t *rectangle; emr_ellipse_t *circle; emr_polygon_t *hexagon; emr_exttextoutw_t *text; #endif 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]); rectangle_count = count_rectangles(symbol); circle_count = count_circles(symbol); hexagon_count = count_hexagons(symbol); string_count = count_strings(symbol); #ifndef _MSC_VER emr_rectangle_t rectangle[rectangle_count ? rectangle_count : 1]; // Avoid sanitize runtime error by making always non-zero emr_ellipse_t circle[circle_count ? circle_count : 1]; emr_polygon_t hexagon[hexagon_count ? hexagon_count : 1]; emr_exttextoutw_t text[string_count ? string_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)); text = (emr_exttextoutw_t*) _alloca(string_count * sizeof (emr_exttextoutw_t)); #endif //Calculate how many coloured rectangles if (symbol->symbology == BARCODE_ULTRA) { for (i = 0; i < 8; i++) { rectangle_count_bycolour[i] = 0; } rect = symbol->vector->rectangles; while (rect) { if (rectangle_count_bycolour[rect->colour] == 0) { colours_used++; } rectangle_count_bycolour[rect->colour]++; rect = rect->next; } } /* 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 = ceil(symbol->vector->width); emr_header.emf_header.bounds.bottom = ceil(symbol->vector->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; emr_header.emf_header.handles = 4; // Number of graphics objects 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; /* 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 < 8; 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 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 < 8; 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 = 10; 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 = 10; bytecount += 12; recordcount++; /* 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 = rect->y; rectangle[this_rectangle].box.bottom = rect->y + rect->height; rectangle[this_rectangle].box.left = rect->x; rectangle[this_rectangle].box.right = rect->x + rect->width; this_rectangle++; bytecount += 24; recordcount++; rect = rect->next; } //Circles circ = symbol->vector->circles; this_circle = 0; while (circ) { radius = circ->diameter / 2.0; circle[this_circle].type = 0x0000002a; // EMR_ELLIPSE circle[this_circle].size = 24; circle[this_circle].box.top = circ->y - radius; circle[this_circle].box.bottom = circ->y + radius; circle[this_circle].box.left = circ->x - radius; circle[this_circle].box.right = circ->x + radius; this_circle++; bytecount += 24; recordcount++; circ = circ->next; } //Hexagons 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; radius = hex->diameter / 2.0; ay = hex->y + (1.0 * radius); by = hex->y + (0.5 * radius); cy = hex->y - (0.5 * radius); dy = hex->y - (1.0 * radius); ey = hex->y - (0.5 * radius); fy = hex->y + (0.5 * radius); ax = hex->x; bx = hex->x + (0.86 * radius); cx = hex->x + (0.86 * radius); dx = hex->x; ex = hex->x - (0.86 * radius); fx = hex->x - (0.86 * radius); hexagon[this_hexagon].a_points_a.x = ax; hexagon[this_hexagon].a_points_a.y = ay; hexagon[this_hexagon].a_points_b.x = bx; hexagon[this_hexagon].a_points_b.y = by; hexagon[this_hexagon].a_points_c.x = cx; hexagon[this_hexagon].a_points_c.y = cy; hexagon[this_hexagon].a_points_d.x = dx; hexagon[this_hexagon].a_points_d.y = dy; hexagon[this_hexagon].a_points_e.x = ex; hexagon[this_hexagon].a_points_e.y = ey; hexagon[this_hexagon].a_points_f.x = fx; hexagon[this_hexagon].a_points_f.y = fy; 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 */ if (symbol->vector->strings) { emr_extcreatefontindirectw.type = 0x00000052; // EMR_EXTCREATEFONTINDIRECTW emr_extcreatefontindirectw.size = 104; emr_extcreatefontindirectw.ih_fonts = 4; emr_extcreatefontindirectw.elw.height = 16 * symbol->scale; emr_extcreatefontindirectw.elw.width = 0; // automatic emr_extcreatefontindirectw.elw.escapement = 0; emr_extcreatefontindirectw.elw.orientation = 0; emr_extcreatefontindirectw.elw.weight = 400; emr_extcreatefontindirectw.elw.italic = 0x00; emr_extcreatefontindirectw.elw.underline = 0x00; emr_extcreatefontindirectw.elw.strike_out = 0x00; emr_extcreatefontindirectw.elw.char_set = 0x01; emr_extcreatefontindirectw.elw.out_precision = 0x00; // OUT_DEFAULT_PRECIS emr_extcreatefontindirectw.elw.clip_precision = 0x00; // CLIP_DEFAULT_PRECIS emr_extcreatefontindirectw.elw.quality = 0x00; emr_extcreatefontindirectw.elw.pitch_and_family = 0x00; for (i = 0; i < 64; i++) { emr_extcreatefontindirectw.elw.facename[i] = '\0'; } 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 = 4; bytecount += 12; recordcount++; } //Text str = symbol->vector->strings; this_text = 0; while (str) { this_string[this_text] = (unsigned char *) malloc(bump_up(str->length + 1) * 2); text[this_text].type = 0x00000054; // EMR_EXTTEXTOUTW text[this_text].size = 76 + (6 * bump_up(str->length + 1)); 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 = 0x00000001; // GM_COMPATIBLE text[this_text].ex_scale = 1.0; text[this_text].ey_scale = 1.0; text[this_text].w_emr_text.reference.x = str->x - (4 * str->length * symbol->scale); // text left text[this_text].w_emr_text.reference.y = str->y - (16 * symbol->scale); // text top text[this_text].w_emr_text.chars = str->length; 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 = 76 + (2 * bump_up(str->length + 1)); for (i = 0; i < bump_up(str->length + 1) * 2; i++) { this_string[this_text][i] = '\0'; } utfle_copy(this_string[this_text], str->text, str->length); bytecount += 76 + (6 * bump_up(str->length + 1)); recordcount++; this_text++; str = str->next; } /* 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 (symbol->output_options & BARCODE_STDOUT) { emf_file = stdout; } else { emf_file = fopen(symbol->outfile, "wb"); } if (emf_file == NULL) { strcpy(symbol->errtxt, "640: Could not open output file"); return ZINT_ERROR_FILE_ACCESS; } fwrite(&emr_header, sizeof (emr_header_t), 1, emf_file); fwrite(&emr_createbrushindirect_bg, sizeof (emr_createbrushindirect_t), 1, emf_file); if (symbol->symbology == BARCODE_ULTRA) { for (i = 0; i < 8; i++) { if (rectangle_count_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); } fwrite(&emr_selectobject_bgbrush, sizeof (emr_selectobject_t), 1, emf_file); fwrite(&emr_selectobject_pen, sizeof (emr_selectobject_t), 1, emf_file); fwrite(&background, sizeof (emr_rectangle_t), 1, emf_file); if (symbol->symbology == BARCODE_ULTRA) { for(i = 0; i < 8; i++) { if (rectangle_count_bycolour[i]) { fwrite(&emr_selectobject_colour[i], sizeof (emr_selectobject_t), 1, emf_file); rect = symbol->vector->rectangles; this_rectangle = 0; while (rect) { if (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); } /* Suppresses clang-tidy clang-analyzer-core.UndefinedBinaryOperatorResult warning */ assert((symbol->vector->strings == NULL && string_count == 0) || (symbol->vector->strings != NULL && string_count > 0)); for (i = 0; i < string_count; i++) { spacing = 8 * symbol->scale; fwrite(&text[i], sizeof (emr_exttextoutw_t), 1, emf_file); fwrite(this_string[i], bump_up(text[i].w_emr_text.chars + 1) * 2, 1, emf_file); free(this_string[i]); for (j = 0; j < bump_up(text[i].w_emr_text.chars + 1); j++) { fwrite(&spacing, 4, 1, emf_file); } } fwrite(&emr_eof, sizeof (emr_eof_t), 1, emf_file); if (symbol->output_options & BARCODE_STDOUT) { fflush(emf_file); } else { fclose(emf_file); } return error_number; }