mirror of
https://github.com/zint/zint
synced 2024-11-16 20:57:25 +13:00
Add support for rendering UPC
Extended bars and text formatting for UPC barcodes now included in render.c
This commit is contained in:
Robin Stuart
parent
95e51cf96d
commit
807d9460d1
162
backend/render.c
162
backend/render.c
@ -51,7 +51,7 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text, float width,
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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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float w, h;
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float w, h;
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const char *locale = NULL;
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// Allocate memory for the rendered version
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@ -140,25 +140,23 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text, float width,
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xoffset = symbol->border_width + symbol->whitespace_width;
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// Calculate the initial scale factor if width provided
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w = main_width + (xoffset * 2);
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if (width) {
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scaler = width / w;
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}
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// Calculate the initial scale factor if width provided
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w = main_width + (xoffset * 2);
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if (width) {
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scaler = width / w;
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}
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/*
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* Calculate the height
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*/
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if (height) {
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symbol->height = height / scaler; // starting height
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} else if (symbol->height == 0) {
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// Calculate the height
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if (height) {
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symbol->height = height / scaler; // starting height
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} else if (symbol->height == 0) {
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symbol->height = 50;
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}
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}
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// Update height for texts
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symbol->height -= textheight + textoffset;
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// Determine if height should be overridden
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// Determine if height should be overridden
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large_bar_count = 0;
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preset_height = 0.0;
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for(i = 0; i < symbol->rows; i++) {
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@ -174,15 +172,15 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text, float width,
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}
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yoffset = symbol->border_width;
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// Calculate the scale factor from the height, incase it needs to be lowered for width
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// Calculate the scale factor from the height, incase it needs to be lowered for width
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h = (symbol->height + textheight + textoffset + (yoffset * 2));
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if ((h * scaler) > height) {
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scaler = height / h;
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}
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if ((h * scaler) > height) {
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scaler = height / h;
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}
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// Set initial render dimensions
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render->width = w * scaler;
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render->height = h * scaler;
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// Set initial render dimensions
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render->width = w * scaler;
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render->height = h * scaler;
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if(((symbol->output_options & BARCODE_BOX) != 0) || ((symbol->output_options & BARCODE_BIND) != 0)) {
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@ -295,7 +293,7 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text, float width,
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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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textwidth = 28.0;
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render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * 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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@ -307,12 +305,12 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text, float width,
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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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textwidth = 2.0 * 7.0;
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render_plot_add_string(symbol, addon, textpos * scaler, addon_text_posn * scaler, 9.0 * 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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textwidth = 5.0 * 7.0;
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render_plot_add_string(symbol, addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, textwidth * scaler, &last_string);
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break;
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}
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@ -337,7 +335,7 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text, float width,
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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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textwidth = 7.0;
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render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
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for(i = 0; i < 6; i++) {
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@ -345,7 +343,7 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text, float width,
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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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textwidth = 6.0 * 7.0;
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render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * 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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@ -357,12 +355,12 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text, float width,
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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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textwidth = 2.0 * 7.0;
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render_plot_add_string(symbol, addon, textpos * scaler, addon_text_posn * scaler, 9.0 * 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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textwidth = 5.0 * 7.0;
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render_plot_add_string(symbol, addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, textwidth * scaler, &last_string);
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break;
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}
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@ -370,10 +368,90 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text, float width,
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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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/* guard bar extensions and text formatting for UPCA */
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latch = 1;
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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, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * 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, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * 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, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * 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, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * 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, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
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break;
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case 5:
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textpos = xoffset + 130;
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textwidth = 5.0 * 7.0;
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render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, textwidth * scaler, &last_string);
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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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render_plot_add_string(symbol, (char *) symbol->text, (symbol->width / 2.0) * scaler, default_text_posn, 9.0 * scaler, 0.0, &last_string);
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render_plot_add_string(symbol, (char *) symbol->text, (symbol->width / 2.0) * scaler, default_text_posn, 9.0 * scaler, 0.0, &last_string);
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}
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}
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@ -429,20 +507,20 @@ int render_plot_add_string(struct zint_symbol *symbol,
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{
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struct zint_render_string *string;
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string = malloc(sizeof(struct zint_render_string));
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string->next = NULL;
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string->x = x;
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string->y = y;
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string->width = width;
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string->fsize = fsize;
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string->text = malloc(sizeof(char) * (ustrlen((unsigned char *) text) + 1));
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strcpy(string->text, text);
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string = malloc(sizeof(struct zint_render_string));
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string->next = NULL;
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string->x = x;
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string->y = y;
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string->width = width;
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string->fsize = fsize;
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string->text = malloc(sizeof(char) * (ustrlen((unsigned char *) text) + 1));
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strcpy(string->text, text);
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if (*last_string)
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(*last_string)->next = string;
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else
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symbol->rendered->strings = string; // First character
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*last_string = string;
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if (*last_string)
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(*last_string)->next = string;
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else
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symbol->rendered->strings = string; // First character
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*last_string = string;
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return 1;
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}
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