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https://github.com/zint/zint
synced 2024-11-16 20:57:25 +13:00
Height / width adjustment for certain symbologies with fixed requirements must be done before calculating the scaler
This commit is contained in:
Jojakim Stahl
parent
2b79940d33
commit
aa64c55787
165
backend/render.c
165
backend/render.c
@ -57,7 +57,7 @@ int render_plot_add_hexagon(struct zint_symbol *symbol, struct zint_render_hexag
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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);
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void render_free(struct zint_symbol *symbol);
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int render_plot(struct zint_symbol *symbol, const float width, const float height) {
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int render_plot(struct zint_symbol *symbol, float width, float height) {
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struct zint_render *render;
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struct zint_render_line *line, *last_line = NULL;
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struct zint_render_string *last_string = NULL;
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@ -219,6 +219,7 @@ int render_plot(struct zint_symbol *symbol, const float width, const float heigh
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xoffset = symbol->border_width + symbol->whitespace_width;
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yoffset = symbol->border_width;
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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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@ -229,6 +230,93 @@ int render_plot(struct zint_symbol *symbol, const float width, const float heigh
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}
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}
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/* Set minimum size of symbol */
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/* Barcode must be at least 2mm high by 2mm across */
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if (width < (2.0 * GL_CONST)) {
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width = (2.0 * GL_CONST);
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}
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x_dimension = width / total_area_width_x / GL_CONST;
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if (height < ((x_dimension * ((2 * symbol->border_width) + text_offset + text_height)) + 2.0) * GL_CONST) {
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height = ((x_dimension * ((2 * symbol->border_width) + text_offset + text_height)) + 2.0) * GL_CONST;
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}
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if (symbol->symbology == BARCODE_CODABAR) {
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/* The minimum X-dimension of Codabar is 0.191mm. The minimum bar height is 5mm */
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if (x_dimension < 0.191) {
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x_dimension = 0.191;
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width = 0.191 * GL_CONST * total_area_width_x;
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}
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if (height < ((x_dimension * ((2 * symbol->border_width) + text_offset + text_height)) + 5.0) * GL_CONST) {
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height = ((x_dimension * ((2 * symbol->border_width) + text_offset + text_height)) + 5.0) * GL_CONST;
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}
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}
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else if (symbol->symbology == BARCODE_CODE49) {
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/* The minimum X-dimension of Code 49 is 0.191mm */
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if (x_dimension < 0.191) {
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x_dimension = 0.191;
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width = 0.191 * GL_CONST * total_area_width_x;
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float encoded_symbol_aspect = total_area_width_x;
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encoded_symbol_aspect /= (preset_height + (2 * yoffset) + text_offset + text_height);
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height = width / encoded_symbol_aspect;
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}
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}
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if (upceanflag != 0) {
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/* The X-dimension of UPC/EAN symbols is fixed at 0.330mm */
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/* The phrase before is questionable. It may scale in certain percentages (80% - 200%).
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see https://internationalbarcodes.com/ean-13-specifications/ */
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/* NOTE: This code will need adjustment before it correctly deals with composite symbols */
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x_dimension = 0.330;
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width = 0.330 * GL_CONST * total_area_width_x;
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/* The height is also fixed */
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switch (upceanflag) {
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case 6:
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case 12:
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case 13:
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/* UPC-A, UPC-E and EAN-13 */
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/* Height of bars should be 22.85mm */
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height = ((0.330 * ((2 * symbol->border_width) + text_offset + text_height)) + 22.85) * GL_CONST;
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break;
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case 8:
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/* EAN-8 */
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/* Height of bars should be 18.23mm */
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height = ((0.330 * ((2 * symbol->border_width) + text_offset + text_height)) + 18.23) * GL_CONST;
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break;
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default:
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/* EAN-2 and EAN-5 */
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/* Height of bars should be 21.10mm */
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height = ((0.330 * ((2 * symbol->border_width) + text_offset + text_height)) + 21.10) * GL_CONST;
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}
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}
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if (symbol->symbology == BARCODE_ONECODE) {
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/* The size of USPS Intelligent Mail barcode is fixed */
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x_dimension = 0.508;
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width = 0.508 * GL_CONST * total_area_width_x;
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height = 4.064 * GL_CONST;
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}
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else if ((symbol->symbology == BARCODE_POSTNET) || (symbol->symbology == BARCODE_PLANET)) {
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/* The size of PostNet and PLANET are fized */
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x_dimension = 0.508;
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width = 0.508 * GL_CONST * total_area_width_x;
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height = 2.921 * GL_CONST;
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}
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else if (((symbol->symbology == BARCODE_AUSPOST) || (symbol->symbology == BARCODE_AUSREPLY)) ||
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((symbol->symbology == BARCODE_AUSROUTE) || (symbol->symbology == BARCODE_AUSREDIRECT))) {
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/* Australia Post use the same sizes as USPS */
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x_dimension = 0.508;
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width = 0.508 * GL_CONST * total_area_width_x;
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height = 4.064 * GL_CONST;
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}
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else if ((symbol->symbology == BARCODE_RM4SCC) || (symbol->symbology == BARCODE_KIX)) {
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/* Royal Mail and KIX Code uses 22 bars per inch */
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x_dimension = 0.577;
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width = 0.577 * GL_CONST * total_area_width_x;
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height = 5.22 * GL_CONST;
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}
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if (large_bar_count == 0) {
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float required_aspect = width / height;
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symbol_aspect = (total_symbol_width_x + (2 * xoffset)) / (preset_height + (2 * yoffset) + text_offset + text_height);
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@ -259,81 +347,6 @@ int render_plot(struct zint_symbol *symbol, const float width, const float heigh
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default_text_posn = (symbol->height + text_offset + symbol->border_width) * scaler;
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}
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x_dimension = render->width / total_area_width_x;
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x_dimension /= GL_CONST;
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/* Set minimum size of symbol */
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/* Barcode must be at least 2mm high by 2mm across */
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if (render->height < ((x_dimension * ((2 * symbol->border_width) + text_offset + text_height)) + 2.0) * GL_CONST) {
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render->height = ((x_dimension * ((2 * symbol->border_width) + text_offset + text_height)) + 2.0) * GL_CONST;
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}
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if (render->width < (2.0 * GL_CONST)) {
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render->width = (2.0 * GL_CONST);
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}
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if (symbol->symbology == BARCODE_CODABAR) {
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/* The minimum X-dimension of Codabar is 0.191mm. The minimum bar height is 5mm */
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if (x_dimension < 0.191) {
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render->width = 0.191 * GL_CONST * total_area_width_x;
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}
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if (render->height < ((x_dimension * ((2 * symbol->border_width) + text_offset + text_height)) + 5.0) * GL_CONST) {
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render->height = ((x_dimension * ((2 * symbol->border_width) + text_offset + text_height)) + 5.0) * GL_CONST;
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}
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}
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else if (symbol->symbology == BARCODE_CODE49) {
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/* The minimum X-dimension of Code 49 is 0.191mm */
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if (x_dimension < 0.191) {
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render->width = 0.191 * GL_CONST * total_area_width_x;
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render->height = render->width / symbol_aspect;
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}
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}
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if (upceanflag != 0) {
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/* The X-dimension of UPC/EAN symbols is fixed at 0.330mm */
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/* NOTE: This code will need adjustment before it correctly deals with composite symbols */
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render->width = 0.330 * GL_CONST * total_area_width_x;
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/* The height is also fixed */
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switch (upceanflag) {
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case 6:
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case 12:
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case 13:
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/* UPC-A, UPC-E and EAN-13 */
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/* Height of bars should be 22.85mm */
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render->height = ((0.330 * ((2 * symbol->border_width) + text_offset + text_height)) + 22.85) * GL_CONST;
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break;
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case 8:
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/* EAN-8 */
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/* Height of bars should be 18.23mm */
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render->height = ((0.330 * ((2 * symbol->border_width) + text_offset + text_height)) + 18.23) * GL_CONST;
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break;
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default:
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/* EAN-2 and EAN-5 */
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/* Height of bars should be 21.10mm */
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render->height = ((0.330 * ((2 * symbol->border_width) + text_offset + text_height)) + 21.10) * GL_CONST;
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}
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}
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if (symbol->symbology == BARCODE_ONECODE) {
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/* The size of USPS Intelligent Mail barcode is fixed */
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render->width = 0.508 * GL_CONST * total_area_width_x;
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render->height = 4.064 * GL_CONST;
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}
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else if ((symbol->symbology == BARCODE_POSTNET) || (symbol->symbology == BARCODE_PLANET)) {
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/* The size of PostNet and PLANET are fized */
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render->width = 0.508 * GL_CONST * total_area_width_x;
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render->height = 2.921 * GL_CONST;
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}
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else if (((symbol->symbology == BARCODE_AUSPOST) || (symbol->symbology == BARCODE_AUSREPLY)) ||
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((symbol->symbology == BARCODE_AUSROUTE) || (symbol->symbology == BARCODE_AUSREDIRECT))) {
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/* Australia Post use the same sizes as USPS */
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render->width = 0.508 * GL_CONST * total_area_width_x;
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render->height = 4.064 * GL_CONST;
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}
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else if ((symbol->symbology == BARCODE_RM4SCC) || (symbol->symbology == BARCODE_KIX)) {
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/* Royal Mail and KIX Code uses 22 bars per inch */
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render->width = 0.577 * GL_CONST * total_area_width_x;
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render->height = 5.22 * GL_CONST;
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}
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if (symbol->symbology == BARCODE_MAXICODE) {
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struct zint_render_ring *ring;
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