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Enhancing support for more layouts with refinements

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This commit is contained in:
Sam Lown 2010-05-31 14:52:19 +02:00
parent d50c2c51a3
commit e79076a218
1 changed files with 285 additions and 33 deletions
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318
backend/render.c
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@ -31,6 +31,11 @@
#include <stdio.h> #include <stdio.h>
#include "common.h" #include "common.h"
struct zint_render_line *render_plot_create_line(float x, float y, float width, float length);
int render_plot_add_line(struct zint_symbol *symbol, struct zint_render_line *line, struct zint_render_line **last_line);
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);
int render_plot(struct zint_symbol *symbol, unsigned int hide_text) int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
{ {
struct zint_render *render; struct zint_render *render;
@ -41,18 +46,21 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
float textpos, large_bar_height, preset_height, row_height, row_posn = 0.0; float textpos, large_bar_height, preset_height, row_height, row_posn = 0.0;
// int error_number = 0; // int error_number = 0;
int textoffset, textheight, xoffset, yoffset, textdone, main_width; int textoffset, textheight, xoffset, yoffset, textdone, main_width;
char addon[6]; //, textpart[10]; char addon[6], textpart[10];
int large_bar_count, comp_offset; int large_bar_count, comp_offset;
float addon_text_posn; float addon_text_posn;
float default_text_posn; float default_text_posn;
float scaler = symbol->scale; float scaler = symbol->scale;
unsigned char *p; unsigned char *p;
const char *locale = NULL;
// Allocate memory for the rendered version // Allocate memory for the rendered version
render = symbol->rendered = malloc(sizeof(struct zint_render)); render = symbol->rendered = malloc(sizeof(struct zint_render));
render->lines = NULL; render->lines = NULL;
render->chars = NULL; render->chars = NULL;
locale = setlocale(LC_ALL, "C");
row_height = 0; row_height = 0;
textdone = 0; textdone = 0;
textpos = 0.0; textpos = 0.0;
@ -66,7 +74,7 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
} }
// symbol->height = 50; // symbol->height = 50;
if(!hide_text && strlen((char *) symbol->text)) { if(!hide_text && ustrlen(symbol->text)) {
textheight = 9.0; textheight = 9.0;
textoffset = 2.0; textoffset = 2.0;
} else { } else {
@ -93,15 +101,89 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
comp_offset++; comp_offset++;
} }
/* Certain symbols need whitespace otherwise characters get chopped off the sides */
if ((((symbol->symbology == BARCODE_EANX) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_EANX_CC))
|| (symbol->symbology == BARCODE_ISBNX)) {
switch(ustrlen(symbol->text)) {
case 13: /* EAN 13 */
case 16:
case 19:
if(symbol->whitespace_width == 0) {
symbol->whitespace_width = 10;
}
main_width = 96 + comp_offset;
break;
default:
main_width = 68 + comp_offset;
}
}
if (((symbol->symbology == BARCODE_UPCA) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_UPCA_CC)) {
if(symbol->whitespace_width == 0) {
symbol->whitespace_width = 10;
main_width = 96 + comp_offset;
}
}
if (((symbol->symbology == BARCODE_UPCE) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_UPCE_CC)) {
if(symbol->whitespace_width == 0) {
symbol->whitespace_width = 10;
main_width = 51 + comp_offset;
}
}
latch = 0;
r = 0;
/* Isolate add-on text */
if(is_extendable(symbol->symbology)) {
for(i = 0; i < ustrlen(symbol->text); i++) {
if (latch == 1) {
addon[r] = symbol->text[i];
r++;
}
if (symbol->text[i] == '+') {
latch = 1;
}
}
}
addon[r] = '\0';
if((symbol->show_hrt == 0) || (ustrlen(symbol->text) != 0)) {
hide_text = 0;
}
if(hide_text) {
textoffset = 0;
} else {
textoffset = 3.0;
}
xoffset = symbol->border_width + symbol->whitespace_width; xoffset = symbol->border_width + symbol->whitespace_width;
yoffset = symbol->border_width; yoffset = symbol->border_width;
render->width = (symbol->width + xoffset + xoffset) * scaler; /*
* If main_width is bigger than symbol->width we need to recalculate the
* scaler so the barcode fits in the same area!
*/
if (main_width != symbol->width) {
scaler = scaler / ((symbol->width + (xoffset * 2.0)) / symbol->width);
}
render->width = (symbol->width + (xoffset * 2)) * scaler;
render->height = (symbol->height + textheight + textoffset + yoffset + yoffset) * scaler; render->height = (symbol->height + textheight + textoffset + yoffset + yoffset) * scaler;
default_text_posn = (symbol->height + textoffset + symbol->border_width) * scaler; if(((symbol->output_options & BARCODE_BOX) != 0) || ((symbol->output_options & BARCODE_BIND) != 0)) {
default_text_posn = (symbol->height + textoffset + symbol->border_width + symbol->border_width) * scaler;
} else {
default_text_posn = (symbol->height + textoffset + symbol->border_width) * scaler;
}
// SAMS ORIGINAL // default_text_posn = (symbol->height + textoffset + symbol->border_width) * scaler;
if(symbol->symbology != BARCODE_MAXICODE) { if(symbol->symbology == BARCODE_MAXICODE) {
/*
* TODO INSERT BARCODE_MAXICODE HERE!
*/
} else {
/* everything else uses rectangles (or squares) */ /* everything else uses rectangles (or squares) */
/* Works from the bottom of the symbol up */ /* Works from the bottom of the symbol up */
int addon_latch = 0; int addon_latch = 0;
@ -156,11 +238,7 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
} }
latch = 0; latch = 0;
if (last_line) render_plot_add_line(symbol, line, &last_line);
last_line->next = line;
else
render->lines = line; // first line
last_line = line;
} else { } else {
/* a space */ /* a space */
latch = 1; latch = 1;
@ -175,38 +253,212 @@ int render_plot(struct zint_symbol *symbol, unsigned int hide_text)
/* Add the text */ /* Add the text */
xoffset -= comp_offset; xoffset -= comp_offset;
row_posn = (row_posn + large_bar_height) * scaler;
if (!hide_text) { if (!hide_text) {
// caculate start xoffset to center text if ((((symbol->symbology == BARCODE_EANX) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_EANX_CC)) ||
xoffset = symbol->width / 2.0; (symbol->symbology == BARCODE_ISBNX)) {
xoffset -= (strlen((char *) symbol->text) / 2) * 5.0; /* guard bar extensions and text formatting for EAN8 and EAN13 */
switch(ustrlen(symbol->text)) {
case 8: /* EAN-8 */
case 11:
case 14:
line = render_plot_create_line((0 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
render_plot_add_line(symbol, line, &last_line);
line = render_plot_create_line((2 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
render_plot_add_line(symbol, line, &last_line);
line = render_plot_create_line((32 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
render_plot_add_line(symbol, line, &last_line);
line = render_plot_create_line((34 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
render_plot_add_line(symbol, line, &last_line);
line = render_plot_create_line((64 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
render_plot_add_line(symbol, line, &last_line);
line = render_plot_create_line((66 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
render_plot_add_line(symbol, line, &last_line);
for (p = symbol->text; *p != 0; p++) { for(i = 0; i < 4; i++) {
if (p != symbol->text && *p == '(') xoffset += 3.0; textpart[i] = symbol->text[i];
}
textpart[4] = '\0';
textpos = 17;
render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, scaler, &last_bchar);
for(i = 0; i < 4; i++) {
textpart[i] = symbol->text[i + 4];
}
textpart[4] = '\0';
textpos = 50;
render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, scaler, &last_bchar);
textdone = 1;
switch(strlen(addon)) {
case 2:
textpos = xoffset + 86;
render_plot_add_string(symbol, addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, scaler, &last_bchar);
break;
case 5:
textpos = xoffset + 100;
render_plot_add_string(symbol, addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, scaler, &last_bchar);
break;
}
bchar = malloc(sizeof(struct zint_render_char)); break;
bchar->next = NULL; case 13: /* EAN 13 */
bchar->x = (textpos + xoffset) * scaler; case 16:
bchar->y = default_text_posn; case 19:
bchar->fsize = 8.0 * scaler; line = render_plot_create_line((0 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
bchar->c = (char) *p; render_plot_add_line(symbol, line, &last_line);
line = render_plot_create_line((2 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
render_plot_add_line(symbol, line, &last_line);
line = render_plot_create_line((46 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
render_plot_add_line(symbol, line, &last_line);
line = render_plot_create_line((48 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
render_plot_add_line(symbol, line, &last_line);
line = render_plot_create_line((92 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
render_plot_add_line(symbol, line, &last_line);
line = render_plot_create_line((94 + xoffset) * scaler, row_posn, scaler, 5.0 * scaler);
render_plot_add_line(symbol, line, &last_line);
if (last_bchar) textpart[0] = symbol->text[0];
last_bchar->next = bchar; textpart[1] = '\0';
else textpos = -5; // 7
render->chars = bchar; // First character render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, scaler, &last_bchar);
last_bchar = bchar;
// Poor mans kerning for next character for(i = 0; i < 6; i++) {
if (*p == '(') { textpart[i] = symbol->text[i + 1];
xoffset += 3.0; }
} else if (*p == ')') { textpart[6] = '\0';
xoffset += 3.0; textpos = 27;
} else { render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, scaler, &last_bchar);
xoffset += 5.0; for(i = 0; i < 6; i++) {
textpart[i] = symbol->text[i + 7];
}
textpart[6] = '\0';
textpos = 74;
render_plot_add_string(symbol, textpart, (textpos + xoffset) * scaler, default_text_posn, 9.0 * scaler, scaler, &last_bchar);
textdone = 1;
switch(strlen(addon)) {
case 2:
textpos = xoffset + 114;
render_plot_add_string(symbol, addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, scaler, &last_bchar);
break;
case 5:
textpos = xoffset + 128;
render_plot_add_string(symbol, addon, textpos * scaler, addon_text_posn * scaler, 9.0 * scaler, scaler, &last_bchar);
break;
}
break;
}
}
/* Put normal human readable text at the bottom (and centered) */
if (textdone == 0) {
// caculate start xoffset to center text
xoffset = symbol->width / 2.0;
xoffset -= (strlen((char *) symbol->text) / 2) * 5.0;
for (p = symbol->text; *p != 0; p++) {
if (p != symbol->text && *p == '(') xoffset += 3.0;
bchar = malloc(sizeof(struct zint_render_char));
bchar->next = NULL;
bchar->x = (textpos + xoffset) * scaler;
bchar->y = default_text_posn;
bchar->fsize = 9.0 * scaler;
bchar->c = (char) *p;
if (last_bchar)
last_bchar->next = bchar;
else
render->chars = bchar; // First character
last_bchar = bchar;
// Poor mans kerning for next character
if (*p == '(') {
xoffset += 3.0;
} else if (*p == ')') {
xoffset += 3.0;
} else {
xoffset += 5.0;
}
} }
} }
} }
if (locale)
setlocale(LC_ALL, locale);
return 1;
}
/*
* Create a new line with its memory allocated ready for adding to the
* rendered structure.
*
* This is much quicker than writing out each line manually (in some cases!)
*/
struct zint_render_line *render_plot_create_line(float x, float y, float width, float length)
{
struct zint_render_line *line;
line = malloc(sizeof(struct zint_render_line));
line->next = NULL;
line->x = x;
line->y = y;
line->width = width;
line->length = length;
return line;
}
/*
* Add the line to the current rendering and update the last line's
* next value.
*/
int render_plot_add_line(struct zint_symbol *symbol, struct zint_render_line *line, struct zint_render_line **last_line)
{
if (*last_line)
(*last_line)->next = line;
else
symbol->rendered->lines = line; // first line
*last_line = line;
return 1;
}
/*
* Add the provided string by spliting it into substrings and adding
* at the provided coordinates.
* This will center the string at the provided location.
*/
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)
{
struct zint_render_char *bchar;
char *p;
int xoffset = x;
float width = 0.0;
float char_width = 7.0 * scaler;
width = ustrlen((unsigned char *) text) * char_width;
xoffset -= (width / 2.0); // Center
for (p = text; *p != 0; p++) {
bchar = malloc(sizeof(struct zint_render_char));
bchar->next = NULL;
bchar->x = xoffset;
bchar->y = y;
bchar->fsize = fsize;
bchar->c = (char) *p;
if (*last_bchar)
(*last_bchar)->next = bchar;
else
symbol->rendered->chars = bchar; // First character
*last_bchar = bchar;
xoffset += char_width;
}
return 1; return 1;
} }