mirror of
https://github.com/zint/zint
synced 2024-11-16 20:57:25 +13:00
Enhancing support for more layouts with refinements
This commit is contained in:
Sam Lown
parent
d50c2c51a3
commit
e79076a218
272
backend/render.c
272
backend/render.c
@ -31,6 +31,11 @@
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#include <stdio.h>
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#include "common.h"
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struct zint_render_line *render_plot_create_line(float x, float y, float width, float length);
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int render_plot_add_line(struct zint_symbol *symbol, struct zint_render_line *line, struct zint_render_line **last_line);
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int render_plot_add_string(struct zint_symbol *symbol, char *text, float x, float y, float fsize, float scaler, struct zint_render_char **last_bchar);
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int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
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{
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struct zint_render *render;
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@ -41,18 +46,21 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
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float textpos, large_bar_height, preset_height, row_height, row_posn = 0.0;
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// int error_number = 0;
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int textoffset, textheight, xoffset, yoffset, textdone, main_width;
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char addon[6]; //, textpart[10];
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char addon[6], textpart[10];
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int large_bar_count, comp_offset;
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float addon_text_posn;
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float default_text_posn;
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float scaler = symbol->scale;
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unsigned char *p;
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const char *locale = NULL;
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// Allocate memory for the rendered version
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render = symbol->rendered = malloc(sizeof(struct zint_render));
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render->lines = NULL;
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render->chars = NULL;
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locale = setlocale(LC_ALL, "C");
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row_height = 0;
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textdone = 0;
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textpos = 0.0;
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@ -66,7 +74,7 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
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}
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// symbol->height = 50;
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if(!hide_text && strlen((char *) symbol->text)) {
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if(!hide_text && ustrlen(symbol->text)) {
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textheight = 9.0;
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textoffset = 2.0;
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} else {
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@ -93,15 +101,89 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
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comp_offset++;
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}
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/* Certain symbols need whitespace otherwise characters get chopped off the sides */
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if ((((symbol->symbology == BARCODE_EANX) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_EANX_CC))
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|| (symbol->symbology == BARCODE_ISBNX)) {
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switch(ustrlen(symbol->text)) {
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case 13: /* EAN 13 */
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case 16:
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case 19:
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if(symbol->whitespace_width == 0) {
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symbol->whitespace_width = 10;
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}
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main_width = 96 + comp_offset;
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break;
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default:
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main_width = 68 + comp_offset;
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}
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}
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if (((symbol->symbology == BARCODE_UPCA) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_UPCA_CC)) {
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if(symbol->whitespace_width == 0) {
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symbol->whitespace_width = 10;
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main_width = 96 + comp_offset;
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}
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}
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if (((symbol->symbology == BARCODE_UPCE) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_UPCE_CC)) {
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if(symbol->whitespace_width == 0) {
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symbol->whitespace_width = 10;
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main_width = 51 + comp_offset;
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}
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}
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latch = 0;
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r = 0;
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/* Isolate add-on text */
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if(is_extendable(symbol->symbology)) {
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for(i = 0; i < ustrlen(symbol->text); i++) {
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if (latch == 1) {
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addon[r] = symbol->text[i];
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r++;
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}
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if (symbol->text[i] == '+') {
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latch = 1;
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}
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}
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}
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addon[r] = '\0';
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if((symbol->show_hrt == 0) || (ustrlen(symbol->text) != 0)) {
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hide_text = 0;
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}
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if(hide_text) {
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textoffset = 0;
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} else {
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textoffset = 3.0;
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}
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xoffset = symbol->border_width + symbol->whitespace_width;
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yoffset = symbol->border_width;
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render->width = (symbol->width + xoffset + xoffset) * scaler;
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/*
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* If main_width is bigger than symbol->width we need to recalculate the
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* scaler so the barcode fits in the same area!
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*/
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if (main_width != symbol->width) {
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scaler = scaler / ((symbol->width + (xoffset * 2.0)) / symbol->width);
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}
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render->width = (symbol->width + (xoffset * 2)) * scaler;
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render->height = (symbol->height + textheight + textoffset + yoffset + yoffset) * scaler;
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if(((symbol->output_options & BARCODE_BOX) != 0) || ((symbol->output_options & BARCODE_BIND) != 0)) {
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default_text_posn = (symbol->height + textoffset + symbol->border_width + symbol->border_width) * scaler;
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} else {
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default_text_posn = (symbol->height + textoffset + symbol->border_width) * scaler;
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}
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// SAMS ORIGINAL // default_text_posn = (symbol->height + textoffset + symbol->border_width) * scaler;
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if(symbol->symbology != BARCODE_MAXICODE) {
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if(symbol->symbology == BARCODE_MAXICODE) {
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/*
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* TODO INSERT BARCODE_MAXICODE HERE!
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*/
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} else {
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/* everything else uses rectangles (or squares) */
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/* Works from the bottom of the symbol up */
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int addon_latch = 0;
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@ -156,11 +238,7 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
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}
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latch = 0;
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if (last_line)
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last_line->next = line;
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else
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render->lines = line; // first line
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last_line = line;
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render_plot_add_line(symbol, line, &last_line);
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} else {
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/* a space */
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latch = 1;
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@ -175,8 +253,104 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
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/* Add the text */
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xoffset -= comp_offset;
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row_posn = (row_posn + large_bar_height) * scaler;
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if (!hide_text) {
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if ((((symbol->symbology == BARCODE_EANX) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_EANX_CC)) ||
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(symbol->symbology == BARCODE_ISBNX)) {
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/* guard bar extensions and text formatting for EAN8 and EAN13 */
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switch(ustrlen(symbol->text)) {
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case 8: /* EAN-8 */
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case 11:
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case 14:
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line = render_plot_create_line((0 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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line = render_plot_create_line((2 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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line = render_plot_create_line((32 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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line = render_plot_create_line((34 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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line = render_plot_create_line((64 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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line = render_plot_create_line((66 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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for(i = 0; i < 4; i++) {
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textpart[i] = symbol->text[i];
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}
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textpart[4] = '\0';
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textpos = 17;
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render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, scaler, &last_bchar);
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for(i = 0; i < 4; i++) {
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textpart[i] = symbol->text[i + 4];
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}
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textpart[4] = '\0';
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textpos = 50;
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render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, scaler, &last_bchar);
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textdone = 1;
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switch(strlen(addon)) {
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case 2:
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textpos = xoffset + 86;
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render_plot_add_string(symbol, addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, scaler, &last_bchar);
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break;
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case 5:
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textpos = xoffset + 100;
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render_plot_add_string(symbol, addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, scaler, &last_bchar);
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break;
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}
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break;
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case 13: /* EAN 13 */
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case 16:
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case 19:
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line = render_plot_create_line((0 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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line = render_plot_create_line((2 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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line = render_plot_create_line((46 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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line = render_plot_create_line((48 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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line = render_plot_create_line((92 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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line = render_plot_create_line((94 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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textpart[0] = symbol->text[0];
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textpart[1] = '\0';
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textpos = -5; // 7
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render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, scaler, &last_bchar);
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for(i = 0; i < 6; i++) {
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textpart[i] = symbol->text[i + 1];
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}
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textpart[6] = '\0';
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textpos = 27;
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render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, scaler, &last_bchar);
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for(i = 0; i < 6; i++) {
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textpart[i] = symbol->text[i + 7];
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}
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textpart[6] = '\0';
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textpos = 74;
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render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, scaler, &last_bchar);
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textdone = 1;
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switch(strlen(addon)) {
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case 2:
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textpos = xoffset + 114;
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render_plot_add_string(symbol, addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, scaler, &last_bchar);
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break;
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case 5:
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textpos = xoffset + 128;
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render_plot_add_string(symbol, addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, scaler, &last_bchar);
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break;
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}
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break;
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}
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}
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/* Put normal human readable text at the bottom (and centered) */
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if (textdone == 0) {
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// caculate start xoffset to center text
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xoffset = symbol->width / 2.0;
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xoffset -= (strlen((char *) symbol->text) / 2) * 5.0;
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@ -188,7 +362,7 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
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bchar->next = NULL;
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bchar->x = (textpos + xoffset) * scaler;
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bchar->y = default_text_posn;
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bchar->fsize = 8.0 * scaler;
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bchar->fsize = 9.0 * scaler;
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bchar->c = (char) *p;
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if (last_bchar)
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@ -207,6 +381,84 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
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}
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}
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}
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}
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if (locale)
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setlocale(LC_ALL, locale);
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return 1;
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}
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/*
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* Create a new line with its memory allocated ready for adding to the
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* rendered structure.
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*
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* This is much quicker than writing out each line manually (in some cases!)
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*/
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struct zint_render_line *render_plot_create_line(float x, float y, float width, float length)
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{
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struct zint_render_line *line;
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line = malloc(sizeof(struct zint_render_line));
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line->next = NULL;
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line->x = x;
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line->y = y;
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line->width = width;
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line->length = length;
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return line;
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}
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/*
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* Add the line to the current rendering and update the last line's
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* next value.
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*/
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int render_plot_add_line(struct zint_symbol *symbol, struct zint_render_line *line, struct zint_render_line **last_line)
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{
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if (*last_line)
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(*last_line)->next = line;
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else
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symbol->rendered->lines = line; // first line
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*last_line = line;
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return 1;
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}
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/*
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* Add the provided string by spliting it into substrings and adding
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* at the provided coordinates.
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* This will center the string at the provided location.
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*/
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int render_plot_add_string(struct zint_symbol *symbol,
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char *text, float x, float y, float fsize, float scaler,
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struct zint_render_char **last_bchar)
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{
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struct zint_render_char *bchar;
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char *p;
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int xoffset = x;
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float width = 0.0;
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float char_width = 7.0 * scaler;
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width = ustrlen((unsigned char *) text) * char_width;
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xoffset -= (width / 2.0); // Center
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for (p = text; *p != 0; p++) {
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bchar = malloc(sizeof(struct zint_render_char));
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bchar->next = NULL;
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bchar->x = xoffset;
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bchar->y = y;
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bchar->fsize = fsize;
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bchar->c = (char) *p;
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if (*last_bchar)
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(*last_bchar)->next = bchar;
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else
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symbol->rendered->chars = bchar; // First character
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*last_bchar = bchar;
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xoffset += char_width;
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}
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return 1;
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}
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