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zint/backend/render.c
hooper 2300a76a07 Add size restrictions for some barcode types 
No longer allows symbols of size less than 2mm high or 2mm wide
Enforces correct sizing for Australia Post, Intelligent Mail, Royal Mail 4-State and KIX Code
Adjusts ascender/tracker/descender proportions on all 4-state codes to revised 3/2/3 standards
Enforces normative sizing for UPC and EAN
Enforces minimum sizing for Codabar and Code 49
Tidies up the code a bit so that all of the above makes some sense
2010-09-12 11:54:47 +01:00

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/*
* render.c - Generic Rendered Format
*
* Initiall written by Sam Lown for use in gLabels. Converts encoded
* data into a generic internal structure of lines and characters
* usable in external applications.
*/
/*
libzint - the open source barcode library
Copyright (C) 2009 Robin Stuart <robin@zint.org.uk>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <locale.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include "common.h"
#define GL_CONST 2.8346
struct zint_render_line *render_plot_create_line(float x, float y, float width, float length);
int render_plot_add_line(struct zint_symbol *symbol, struct zint_render_line *line, struct zint_render_line **last_line);
struct zint_render_ring *render_plot_create_ring(float x, float y, float radius, float line_width);
int render_plot_add_ring(struct zint_symbol *symbol, struct zint_render_ring *ring, struct zint_render_ring **last_ring);
struct zint_render_hexagon *render_plot_create_hexagon(float x, float y);
int render_plot_add_hexagon(struct zint_symbol *symbol, struct zint_render_hexagon *ring, struct zint_render_hexagon **last_hexagon);
int render_plot_add_string(struct zint_symbol *symbol, unsigned char *text, float x, float y, float fsize, float width, struct zint_render_string **last_string);
int render_plot(struct zint_symbol *symbol, float width, float height)
{
struct zint_render *render;
struct zint_render_line *line, *last_line = NULL;
struct zint_render_string *last_string = NULL;
struct zint_render_ring *ring, *last_ring = NULL;
struct zint_render_hexagon *hexagon, *last_hexagon = NULL;
int i, r, block_width, latch, this_row;
float textpos, textwidth, large_bar_height, preset_height, row_height, row_posn = 0.0;
// int error_number = 0;
int text_offset, text_height, xoffset, yoffset, textdone, main_symbol_width_x, addon_width_x;
char addon[6], textpart[10];
int large_bar_count, symbol_lead_in, total_symbol_width_x, total_area_width_x;
float addon_text_posn;
float default_text_posn;
float scaler;
const char *locale = NULL;
int hide_text = 0;
float required_aspect;
float symbol_aspect = 1;
float x_dimension;
int upceanflag = 0;
// Allocate memory for the rendered version
render = symbol->rendered = malloc(sizeof(struct zint_render));
render->lines = NULL;
render->strings = NULL;
render->rings = NULL;
render->hexagons = NULL;
locale = setlocale(LC_ALL, "C");
row_height = 0;
textdone = 0;
textpos = 0.0;
main_symbol_width_x = symbol->width;
strcpy(addon, "");
symbol_lead_in = 0;
addon_text_posn = 0.0;
addon_width_x = 0;
/*
* Determine if there will be any addon texts and text height
*/
latch = 0;
r = 0;
/* Isolate add-on text */
if(is_extendable(symbol->symbology)) {
for(i = 0; i < ustrlen(symbol->text); i++) {
if (latch == 1) {
addon[r] = symbol->text[i];
r++;
}
if (symbol->text[i] == '+') {
latch = 1;
}
}
}
addon[r] = '\0';
if((!symbol->show_hrt) || (ustrlen(symbol->text) == 0)) {
hide_text = 1;
text_height = text_offset = 0.0;
} else {
text_height = 9.0;
text_offset = 2.0;
}
/*
* Calculate the width of the barcode, especially if there are any extra
* borders or white space to add.
*/
while(!(module_is_set(symbol, symbol->rows - 1, symbol_lead_in))) {
symbol_lead_in++;
}
/* Certain symbols need whitespace otherwise characters get chopped off the sides */
if ((((symbol->symbology == BARCODE_EANX) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_EANX_CC))
|| (symbol->symbology == BARCODE_ISBNX)) {
switch(ustrlen(symbol->text)) {
case 13: /* EAN 13 */
case 16:
case 19:
if(symbol->whitespace_width == 0) {
symbol->whitespace_width = 10;
}
main_symbol_width_x = 96 + symbol_lead_in;
upceanflag = 13;
break;
case 2:
main_symbol_width_x = 22 + symbol_lead_in;
upceanflag = 2;
break;
case 5:
main_symbol_width_x = 49 + symbol_lead_in;
upceanflag = 5;
break;
default:
main_symbol_width_x = 68 + symbol_lead_in;
upceanflag = 8;
}
switch(ustrlen(symbol->text)) {
case 11:
case 16:
/* EAN-2 add-on */
addon_width_x = 31;
break;
case 14:
case 19:
/* EAN-5 add-on */
addon_width_x = 58;
break;
}
}
if (((symbol->symbology == BARCODE_UPCA) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_UPCA_CC)) {
upceanflag = 12;
if(symbol->whitespace_width < 10) {
symbol->whitespace_width = 10;
main_symbol_width_x = 96 + symbol_lead_in;
}
switch(ustrlen(symbol->text)) {
case 15:
/* EAN-2 add-on */
addon_width_x = 31;
break;
case 18:
/* EAN-5 add-on */
addon_width_x = 58;
break;
}
}
if (((symbol->symbology == BARCODE_UPCE) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_UPCE_CC)) {
upceanflag = 6;
if(symbol->whitespace_width == 0) {
symbol->whitespace_width = 10;
main_symbol_width_x = 51 + symbol_lead_in;
}
switch(ustrlen(symbol->text)) {
case 11:
/* EAN-2 add-on */
addon_width_x = 31;
break;
case 14:
/* EAN-5 add-on */
addon_width_x = 58;
break;
}
}
total_symbol_width_x = main_symbol_width_x + addon_width_x;
total_area_width_x = total_symbol_width_x + (2 * (symbol->border_width + symbol->whitespace_width));
xoffset = symbol->border_width + symbol->whitespace_width;
yoffset = symbol->border_width;
// Determine if height should be overridden
large_bar_count = 0;
preset_height = 0.0;
for(i = 0; i < symbol->rows; i++) {
preset_height += symbol->row_height[i];
if(symbol->row_height[i] == 0) {
large_bar_count++;
}
}
if (large_bar_count == 0) {
required_aspect = width / height;
symbol_aspect = (total_symbol_width_x + (2 * xoffset)) / (preset_height + (2 * yoffset) + text_offset + text_height);
symbol->height = preset_height;
if (required_aspect > symbol_aspect) {
/* the area is too wide */
scaler = height / (preset_height + (2 * yoffset) + text_offset + text_height);
render->width = symbol_aspect * height;
render->height = height;
} else {
/* the area is too high */
scaler = width / (total_symbol_width_x + (2 * xoffset));
render->width = width;
render->height = width / symbol_aspect;
}
} else {
scaler = width / (total_symbol_width_x + (2 * xoffset));
symbol->height = (height / scaler) - ((2 * yoffset) + text_offset + text_height);
render->width = width;
render->height = height;
}
large_bar_height = (symbol->height - preset_height) / large_bar_count;
if(((symbol->output_options & BARCODE_BOX) != 0) || ((symbol->output_options & BARCODE_BIND) != 0)) {
default_text_posn = (symbol->height + text_offset + symbol->border_width + symbol->border_width) * scaler;
} else {
default_text_posn = (symbol->height + text_offset + symbol->border_width) * scaler;
}
x_dimension = render->width / total_area_width_x;
x_dimension /= GL_CONST;
/* Set minimum size of symbol */
/* Barcode must be at least 2mm high by 2mm across */
if(render->height < ((x_dimension * ((2 * symbol->border_width) + text_offset + text_height)) + 2.0) * GL_CONST) {
render->height = ((x_dimension * ((2 * symbol->border_width) + text_offset + text_height)) + 2.0) * GL_CONST;
}
if(render->width < (2.0 * GL_CONST)) {
render->width = (2.0 * GL_CONST);
}
if(symbol->symbology == BARCODE_CODABAR) {
/* The minimum X-dimension of Codabar is 0.191mm. The minimum bar height is 5mm */
if(x_dimension < 0.191) {
render->width = 0.191 * GL_CONST * total_area_width_x;
}
if(render->height < ((x_dimension * ((2 * symbol->border_width) + text_offset + text_height)) + 5.0) * GL_CONST) {
render->height = ((x_dimension * ((2 * symbol->border_width) + text_offset + text_height)) + 5.0) * GL_CONST;
}
}
if(symbol->symbology == BARCODE_CODE49) {
/* The minimum X-dimension of Code 49 is 0.191mm */
if(x_dimension < 0.191) {
render->width = 0.191 * GL_CONST * total_area_width_x;
render->height = render->width / symbol_aspect;
}
}
if(upceanflag != 0) {
/* The X-dimension of UPC/EAN symbols is fixed at 0.330mm */
/* NOTE: This code will need adjustment before it correctly deals with composite symbols */
render->width = 0.330 * GL_CONST * total_area_width_x;
/* The height is also fixed */
switch (upceanflag) {
case 6:
case 12:
case 13:
/* UPC-A, UPC-E and EAN-13 */
/* Height of bars should be 22.85mm */
render->height = ((0.330 * ((2 * symbol->border_width) + text_offset + text_height)) + 22.85) * GL_CONST;
break;
case 8:
/* EAN-8 */
/* Height of bars should be 18.23mm */
render->height = ((0.330 * ((2 * symbol->border_width) + text_offset + text_height)) + 18.23) * GL_CONST;
break;
default:
/* EAN-2 and EAN-5 */
/* Height of bars should be 21.10mm */
render->height = ((0.330 * ((2 * symbol->border_width) + text_offset + text_height)) + 21.10) * GL_CONST;
}
}
if(symbol->symbology == BARCODE_ONECODE) {
/* The size of USPS Intelligent Mail barcode is fixed */
render->width = 0.508 * GL_CONST * total_area_width_x;
render->height = 4.064 * GL_CONST;
}
if(((symbol->symbology == BARCODE_AUSPOST) || (symbol->symbology == BARCODE_AUSREPLY)) ||
((symbol->symbology == BARCODE_AUSROUTE) || (symbol->symbology == BARCODE_AUSREDIRECT))) {
/* Australia Post use the same sizes as USPS */
render->width = 0.508 * GL_CONST * total_area_width_x;
render->height = 4.064 * GL_CONST;
}
if((symbol->symbology == BARCODE_RM4SCC) || (symbol->symbology == BARCODE_KIX)) {
/* Royal Mail and KIX Code uses 22 bars per inch */
render->width = 0.577 * GL_CONST * total_area_width_x;
render->height = 5.22 * GL_CONST;
}
if(symbol->symbology == BARCODE_MAXICODE) {
/* Maxicode is a fixed size */
scaler = GL_CONST; /* Converts from millimeters to the scale used by glabels */
render->width = 28.16 * scaler;
render->height = 26.86 * scaler;
/* Central bullseye pattern */
ring = render_plot_create_ring(13.64 * scaler, 13.43 * scaler, 0.85 * scaler, 0.67 * scaler);
render_plot_add_ring(symbol, ring, &last_ring);
ring = render_plot_create_ring(13.64 * scaler, 13.43 * scaler, 2.20 * scaler, 0.67 * scaler);
render_plot_add_ring(symbol, ring, &last_ring);
ring = render_plot_create_ring(13.64 * scaler, 13.43 * scaler, 3.54 * scaler, 0.67 * scaler);
render_plot_add_ring(symbol, ring, &last_ring);
/* Hexagons */
for(r = 0; r < symbol->rows; r++) {
for(i = 0; i < symbol->width; i++) {
if(module_is_set(symbol, r, i)) {
if(r % 2 == 1) {
hexagon = render_plot_create_hexagon(((i * 0.88) + 1.76) * scaler, ((r * 0.76) + 0.76) * scaler);
} else {
hexagon = render_plot_create_hexagon(((i * 0.88) + 1.32) * scaler, ((r * 0.76) + 0.76) * scaler);
}
render_plot_add_hexagon(symbol, hexagon, &last_hexagon);
}
}
}
} else {
/* everything else uses rectangles (or squares) */
/* Works from the bottom of the symbol up */
int addon_latch = 0;
for(r = 0; r < symbol->rows; r++) {
this_row = r;
if(symbol->row_height[this_row] == 0) {
row_height = large_bar_height;
} else {
row_height = symbol->row_height[this_row];
}
row_posn = 0;
for(i = 0; i < r; i++) {
if(symbol->row_height[i] == 0) {
row_posn += large_bar_height;
} else {
row_posn += symbol->row_height[i];
}
}
row_posn += yoffset;
i = 0;
if(module_is_set(symbol, this_row, 0)) {
latch = 1;
} else {
latch = 0;
}
do {
block_width = 0;
do {
block_width++;
} while (module_is_set(symbol, this_row, i + block_width) == module_is_set(symbol, this_row, i));
if((addon_latch == 0) && (r == (symbol->rows - 1)) && (i > main_symbol_width_x)) {
addon_text_posn = row_posn * scaler;
addon_latch = 1;
}
if(latch == 1) {
/* a bar */
if(addon_latch == 0) {
line = render_plot_create_line((i + xoffset) * scaler, (row_posn) * scaler, block_width * scaler, row_height * scaler);
} else {
line = render_plot_create_line((i + xoffset) * scaler, (row_posn + 10.0) * scaler, block_width * scaler, (row_height - 5.0) * scaler);
}
latch = 0;
render_plot_add_line(symbol, line, &last_line);
} else {
/* a space */
latch = 1;
}
i += block_width;
} while (i < symbol->width);
}
}
/* That's done the actual data area, everything else is human-friendly */
/* Add the text */
xoffset -= symbol_lead_in;
row_posn = (row_posn + large_bar_height) * scaler;
if (!hide_text) {
if(upceanflag == 8) {
/* guard bar extensions and text formatting for EAN-8 */
i = 0;
for (line = symbol->rendered->lines; line != NULL; line = line->next) {
switch(i) {
case 0:
case 1:
case 10:
case 11:
case 20:
case 21:
line->length += (5.0 * scaler);
break;
}
i++;
}
for(i = 0; i < 4; i++) {
textpart[i] = symbol->text[i];
}
textpart[4] = '\0';
textpos = 17;
textwidth = 4.0 * 8.5;
render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
for(i = 0; i < 4; i++) {
textpart[i] = symbol->text[i + 4];
}
textpart[4] = '\0';
textpos = 50;
render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
textdone = 1;
switch(strlen(addon)) {
case 2:
textpos = xoffset + 86;
textwidth = 2.0 * 8.5;
render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 11.0 * scaler, textwidth * scaler, &last_string);
break;
case 5:
textpos = xoffset + 100;
textwidth = 5.0 * 8.5;
render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 11.0 * scaler, textwidth * scaler, &last_string);
break;
}
}
if(upceanflag == 13) {
/* guard bar extensions and text formatting for EAN-13 */
i = 0;
for (line = symbol->rendered->lines; line != NULL; line = line->next) {
switch(i) {
case 0:
case 1:
case 14:
case 15:
case 28:
case 29:
line->length += (5.0 * scaler);
break;
}
i++;
}
textpart[0] = symbol->text[0];
textpart[1] = '\0';
textpos = -5; // 7
textwidth = 8.5;
render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
for(i = 0; i < 6; i++) {
textpart[i] = symbol->text[i + 1];
}
textpart[6] = '\0';
textpos = 25;
textwidth = 6.0 * 8.5;
render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
for(i = 0; i < 6; i++) {
textpart[i] = symbol->text[i + 7];
}
textpart[6] = '\0';
textpos = 72;
render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
textdone = 1;
switch(strlen(addon)) {
case 2:
textpos = xoffset + 114;
textwidth = 2.0 * 8.5;
render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 11.0 * scaler, textwidth * scaler, &last_string);
break;
case 5:
textpos = xoffset + 128;
textwidth = 5.0 * 8.5;
render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 11.0 * scaler, textwidth * scaler, &last_string);
break;
}
}
if (upceanflag == 12) {
/* guard bar extensions and text formatting for UPCA */
i = 0;
for (line = symbol->rendered->lines; line != NULL; line = line->next) {
switch(i) {
case 0:
case 1:
case 2:
case 3:
case 14:
case 15:
case 26:
case 27:
case 28:
case 29:
line->length += (5.0 * scaler);
break;
}
i++;
}
textpart[0] = symbol->text[0];
textpart[1] = '\0';
textpos = -5;
textwidth = 6.2;
render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn + (2.0 * scaler), 8.0 * scaler, textwidth * scaler, &last_string);
for(i = 0; i < 5; i++) {
textpart[i] = symbol->text[i + 1];
}
textpart[5] = '\0';
textpos = 27;
textwidth = 5.0 * 8.5;
render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
for(i = 0; i < 5; i++) {
textpart[i] = symbol->text[i + 6];
}
textpos = 68;
render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
textpart[0] = symbol->text[11];
textpart[1] = '\0';
textpos = 100;
textwidth = 6.2;
render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn + (2.0 * scaler), 8.0 * scaler, textwidth * scaler, &last_string);
textdone = 1;
switch(strlen(addon)) {
case 2:
textpos = xoffset + 116;
textwidth = 2.0 * 8.5;
render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 11.0 * scaler, textwidth * scaler, &last_string);
break;
case 5:
textpos = xoffset + 130;
textwidth = 5.0 * 8.5;
render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 11.0 * scaler, textwidth * scaler, &last_string);
break;
}
}
if (upceanflag == 6) {
/* guard bar extensions and text formatting for UPCE */
i = 0;
for (line = symbol->rendered->lines; line != NULL; line = line->next) {
switch(i) {
case 0:
case 1:
case 14:
case 15:
case 16:
line->length += (5.0 * scaler);
break;
}
i++;
}
textpart[0] = symbol->text[0];
textpart[1] = '\0';
textpos = -5;
textwidth = 6.2;
render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn + (2.0 * scaler), 8.0 * scaler, textwidth * scaler, &last_string);
for(i = 0; i < 6; i++) {
textpart[i] = symbol->text[i + 1];
}
textpart[6] = '\0';
textpos = 24;
textwidth = 6.0 * 8.5;
render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
textpart[0] = symbol->text[7];
textpart[1] = '\0';
textpos = 55;
textwidth = 6.2;
render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn + (2.0 * scaler), 8.0 * scaler, textwidth * scaler, &last_string);
textdone = 1;
switch(strlen(addon)) {
case 2:
textpos = xoffset + 70;
textwidth = 2.0 * 8.5;
render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 11.0 * scaler, textwidth * scaler, &last_string);
break;
case 5:
textpos = xoffset + 84;
textwidth = 5.0 * 8.5;
render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 11.0 * scaler, textwidth * scaler, &last_string);
break;
}
}
/* Put normal human readable text at the bottom (and centered) */
if (textdone == 0) {
// caculate start xoffset to center text
render_plot_add_string(symbol, symbol->text, ((symbol->width / 2.0) + xoffset) * scaler, default_text_posn, 9.0 * scaler, 0.0, &last_string);
}
}
switch(symbol->symbology) {
case BARCODE_MAXICODE:
/* Do nothing! */
break;
default:
if((symbol->output_options & BARCODE_BIND) != 0) {
if((symbol->rows > 1) && (is_stackable(symbol->symbology) == 1)) {
/* row binding */
for(r = 1; r < symbol->rows; r++) {
line = render_plot_create_line(xoffset * scaler, ((r * row_height) + yoffset - 1) * scaler, symbol->width * scaler, 2.0 * scaler);
render_plot_add_line(symbol, line, &last_line);
}
}
}
if (((symbol->output_options & BARCODE_BOX) != 0) || ((symbol->output_options & BARCODE_BIND) != 0)) {
line = render_plot_create_line(0, 0, (symbol->width + xoffset + xoffset) * scaler, symbol->border_width * scaler);
render_plot_add_line(symbol, line, &last_line);
line = render_plot_create_line(0, (symbol->height + symbol->border_width) * scaler, (symbol->width + xoffset + xoffset) * scaler, symbol->border_width * scaler);
render_plot_add_line(symbol, line, &last_line);
}
if((symbol->output_options & BARCODE_BOX) != 0) {
/* side bars */
line = render_plot_create_line(0, 0, symbol->border_width * scaler, (symbol->height + (2 * symbol->border_width)) * scaler);
render_plot_add_line(symbol, line, &last_line);
line = render_plot_create_line((symbol->width + xoffset + xoffset - symbol->border_width) * scaler, 0, symbol->border_width * scaler, (symbol->height + (2 * symbol->border_width)) * scaler);
render_plot_add_line(symbol, line, &last_line);
}
break;
}
if (locale)
setlocale(LC_ALL, locale);
return 1;
}
/*
* Create a new line with its memory allocated ready for adding to the
* rendered structure.
*
* This is much quicker than writing out each line manually (in some cases!)
*/
struct zint_render_line *render_plot_create_line(float x, float y, float width, float length)
{
struct zint_render_line *line;
line = malloc(sizeof(struct zint_render_line));
line->next = NULL;
line->x = x;
line->y = y;
line->width = width;
line->length = length;
return line;
}
/*
* Add the line to the current rendering and update the last line's
* next value.
*/
int render_plot_add_line(struct zint_symbol *symbol, struct zint_render_line *line, struct zint_render_line **last_line)
{
if (*last_line)
(*last_line)->next = line;
else
symbol->rendered->lines = line; // first line
*last_line = line;
return 1;
}
struct zint_render_ring *render_plot_create_ring(float x, float y, float radius, float line_width)
{
struct zint_render_ring *ring;
ring = malloc(sizeof(struct zint_render_ring));
ring->next = NULL;
ring->x = x;
ring->y = y;
ring->radius = radius;
ring->line_width = line_width;
return ring;
}
int render_plot_add_ring(struct zint_symbol *symbol, struct zint_render_ring *ring, struct zint_render_ring **last_ring)
{
if (*last_ring)
(*last_ring)->next = ring;
else
symbol->rendered->rings = ring; // first ring
*last_ring = ring;
return 1;
}
struct zint_render_hexagon *render_plot_create_hexagon(float x, float y)
{
struct zint_render_hexagon *hexagon;
hexagon = malloc(sizeof(struct zint_render_hexagon));
hexagon->next = NULL;
hexagon->x = x;
hexagon->y = y;
return hexagon;
}
int render_plot_add_hexagon(struct zint_symbol *symbol, struct zint_render_hexagon *hexagon, struct zint_render_hexagon **last_hexagon)
{
if (*last_hexagon)
(*last_hexagon)->next = hexagon;
else
symbol->rendered->hexagons = hexagon; // first hexagon
*last_hexagon = hexagon;
return 1;
}
/*
* Add a string structure to the symbol.
* Coordinates assumed to be from top-center.
*/
int render_plot_add_string(struct zint_symbol *symbol,
unsigned char *text, float x, float y, float fsize, float width,
struct zint_render_string **last_string)
{
struct zint_render_string *string;
string = malloc(sizeof(struct zint_render_string));
string->next = NULL;
string->x = x;
string->y = y;
string->width = width;
string->fsize = fsize;
string->length = ustrlen(text);
string->text = malloc(sizeof(unsigned char) * (ustrlen(text) + 1));
ustrcpy(string->text, text);
if (*last_string)
(*last_string)->next = string;
else
symbol->rendered->strings = string; // First character
*last_string = string;
return 1;
}
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