mirror of
https://github.com/zint/zint
synced 2024-11-16 20:57:25 +13:00
Correct UPC and EAN rendering
Made corrections to the rendering of UPC and EAN symbols in render.c including taking account of EAN-2 and EAN-5 addon codes, correct text sizing and simplified guard bar extension.
This commit is contained in:
Robin Stuart
parent
75067959b4
commit
6702e7a005
@ -33,7 +33,7 @@
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struct zint_symbol *ZBarcode_Create()
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{
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struct zint_symbol *symbol;
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int i, j;
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int i;
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symbol = (struct zint_symbol*)malloc(sizeof(*symbol));
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if (!symbol) return NULL;
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263
backend/render.c
263
backend/render.c
@ -51,7 +51,7 @@ int render_plot(struct zint_symbol *symbol, float width, float height)
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int i, r, block_width, latch, this_row;
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float textpos, textwidth, 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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int textoffset, textheight, xoffset, yoffset, textdone, main_width, addon_width;
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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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@ -79,6 +79,7 @@ int render_plot(struct zint_symbol *symbol, float width, float height)
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strcpy(addon, "");
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comp_offset = 0;
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addon_text_posn = 0.0;
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addon_width = 0;
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/*
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* Determine if there will be any addon texts and text height
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@ -129,9 +130,27 @@ int render_plot(struct zint_symbol *symbol, float width, float height)
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}
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main_width = 96 + comp_offset;
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break;
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case 2:
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main_width = 22 + comp_offset;
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break;
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case 5:
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main_width = 49 + 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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switch(ustrlen(symbol->text)) {
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case 11:
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case 16:
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/* EAN-2 add-on */
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addon_width = 31;
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break;
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case 14:
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case 19:
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/* EAN-5 add-on */
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addon_width = 58;
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break;
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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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@ -139,6 +158,16 @@ int render_plot(struct zint_symbol *symbol, float width, float height)
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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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switch(ustrlen(symbol->text)) {
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case 15:
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/* EAN-2 add-on */
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addon_width = 31;
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break;
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case 18:
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/* EAN-5 add-on */
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addon_width = 58;
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break;
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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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@ -146,6 +175,16 @@ int render_plot(struct zint_symbol *symbol, float width, float height)
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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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switch(ustrlen(symbol->text)) {
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case 11:
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/* EAN-2 add-on */
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addon_width = 31;
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break;
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case 14:
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/* EAN-5 add-on */
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addon_width = 58;
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break;
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}
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}
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xoffset = symbol->border_width + symbol->whitespace_width;
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@ -163,21 +202,21 @@ int render_plot(struct zint_symbol *symbol, float width, float height)
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if (large_bar_count == 0) {
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required_aspect = width / height;
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symbol_aspect = (main_width + (2 * xoffset)) / (preset_height + (2 * yoffset) + textoffset + textheight);
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symbol_aspect = (main_width + addon_width + (2 * xoffset)) / (preset_height + (2 * yoffset) + textoffset + textheight);
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symbol->height = preset_height;
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if (required_aspect > symbol_aspect) {
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/* horizontal padding is required */
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scaler = height / (preset_height + (2 * yoffset) + textoffset + textheight);
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x_spacer = ((width / scaler) - (main_width + (2 * xoffset))) / 2;
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x_spacer = ((width / scaler) - (main_width + addon_width + (2 * xoffset))) / 2;
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y_spacer = 0.0;
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} else {
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/* vertical padding is required */
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scaler = width / (main_width + (2 * xoffset));
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scaler = width / (main_width + addon_width + (2 * xoffset));
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y_spacer = ((height / scaler) - (preset_height + (2 * yoffset) + textoffset + textheight)) / 2;
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x_spacer = 0.0;
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}
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} else {
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scaler = width / (main_width + (2 * xoffset));
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scaler = width / (main_width + addon_width + (2 * xoffset));
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symbol->height = (height / scaler) - ((2 * yoffset) + textoffset + textheight);
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x_spacer = 0.0;
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@ -259,7 +298,7 @@ int render_plot(struct zint_symbol *symbol, float width, float height)
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block_width++;
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} while (module_is_set(symbol, this_row, i + block_width) == module_is_set(symbol, this_row, i));
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if((addon_latch == 0) && (r == (symbol->rows - 1)) && (i > main_width)) {
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addon_text_posn = (row_posn + 8.0) * scaler;
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addon_text_posn = row_posn * scaler;
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addon_latch = 1;
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}
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if(latch == 1) {
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@ -296,43 +335,45 @@ int render_plot(struct zint_symbol *symbol, float width, float height)
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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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i = 0;
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for (line = symbol->rendered->lines; line != NULL; line = line->next) {
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switch(i) {
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case 0:
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case 1:
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case 10:
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case 11:
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case 20:
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case 21:
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line->length += (5.0 * scaler);
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break;
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}
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i++;
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}
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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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textwidth = 28.0;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
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textwidth = 4.0 * 8.5;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
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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, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
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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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textwidth = 2.0 * 7.0;
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render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, textwidth * scaler, &last_string);
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textwidth = 2.0 * 8.5;
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render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 11.0 * scaler, textwidth * scaler, &last_string);
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break;
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case 5:
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textpos = xoffset + 100;
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textwidth = 5.0 * 7.0;
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render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, textwidth * scaler, &last_string);
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textwidth = 5.0 * 8.5;
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render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 11.0 * scaler, textwidth * scaler, &last_string);
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break;
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}
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@ -340,49 +381,51 @@ int render_plot(struct zint_symbol *symbol, float width, float height)
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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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i = 0;
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for (line = symbol->rendered->lines; line != NULL; line = line->next) {
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switch(i) {
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case 0:
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case 1:
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case 14:
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case 15:
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case 28:
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case 29:
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line->length += (5.0 * scaler);
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break;
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}
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i++;
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}
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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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textwidth = 7.0;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
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textwidth = 8.5;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
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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 = 25;
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textwidth = 6.0 * 7.0;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
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textwidth = 6.0 * 8.5;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
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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 = 72;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
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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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textwidth = 2.0 * 7.0;
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render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, textwidth * scaler, &last_string);
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textwidth = 2.0 * 8.5;
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render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 11.0 * scaler, textwidth * scaler, &last_string);
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break;
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case 5:
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textpos = xoffset + 128;
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textwidth = 5.0 * 7.0;
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render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, textwidth * scaler, &last_string);
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textwidth = 5.0 * 8.5;
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render_plot_add_string(symbol, (unsigned char *) addon, textpos * scaler, addon_text_posn * scaler, 11.0 * scaler, textwidth * scaler, &last_string);
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break;
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}
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break;
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@ -391,80 +434,106 @@ int render_plot(struct zint_symbol *symbol, float width, float height)
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if (((symbol->symbology == BARCODE_UPCA) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_UPCA_CC)) {
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/* guard bar extensions and text formatting for UPCA */
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latch = 1;
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i = 0;
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for (line = symbol->rendered->lines; line != NULL; line = line->next) {
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switch(i) {
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case 0:
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case 1:
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case 2:
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case 3:
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case 14:
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case 15:
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case 26:
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case 27:
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case 28:
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case 29:
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line->length += (5.0 * scaler);
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break;
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}
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i++;
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}
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i = 0 + comp_offset;
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do {
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block_width = 0;
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do {
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block_width++;
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} while (module_is_set(symbol, symbol->rows - 1, i + block_width) == module_is_set(symbol, symbol->rows - 1, i));
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if(latch == 1) {
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/* a bar */
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line = render_plot_create_line((i + xoffset - comp_offset) * scaler, row_posn, block_width * scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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latch = 0;
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} else {
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/* a space */
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latch = 1;
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}
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i += block_width;
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} while (i < 11 + comp_offset);
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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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latch = 1;
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i = 85 + comp_offset;
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do {
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block_width = 0;
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do {
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block_width++;
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} while (module_is_set(symbol, symbol->rows - 1, i + block_width) == module_is_set(symbol, symbol->rows - 1, i));
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if(latch == 1) {
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/* a bar */
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line = render_plot_create_line((i + xoffset - comp_offset) * scaler, row_posn, block_width * scaler, 5.0 * scaler);
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render_plot_add_line(symbol, line, &last_line);
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latch = 0;
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} else {
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/* a space */
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latch = 1;
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}
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i += block_width;
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} while (i < 96 + comp_offset);
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textpart[0] = symbol->text[0];
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textpart[1] = '\0';
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textpos = -5;
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textwidth = 7.0;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
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textwidth = 6.2;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn + (2.0 * scaler), 8.0 * scaler, textwidth * scaler, &last_string);
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for(i = 0; i < 5; i++) {
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textpart[i] = symbol->text[i + 1];
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}
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textpart[5] = '\0';
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textpos = 27;
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textwidth = 4.0 * 7.0;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
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textwidth = 5.0 * 8.5;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
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for(i = 0; i < 5; i++) {
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textpart[i] = symbol->text[i + 6];
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}
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textpos = 68;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 11.0 * scaler, textwidth * scaler, &last_string);
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textpart[0] = symbol->text[11];
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textpart[1] = '\0';
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textpos = 100;
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textwidth = 7.0;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
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textwidth = 6.2;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn + (2.0 * scaler), 8.0 * scaler, textwidth * scaler, &last_string);
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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 + 116;
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textwidth = 2.0 * 7.0;
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render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
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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 * 7.0;
|
||||
render_plot_add_string(symbol, (unsigned char *) textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
|
||||
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 (((symbol->symbology == BARCODE_UPCE) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_UPCE_CC)) {
|
||||
/* 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;
|
||||
}
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user