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Add bold text option for PNG

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Fixes #26
Code patch by Christoph Scharenberg
This commit is contained in:
Robin Stuart 2016-06-19 12:32:49 +01:00
parent d2774af120
commit e0240c8e2e
3 changed files with 137 additions and 45 deletions
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150
backend/png.c
View File

@ -549,19 +549,24 @@ void draw_hexagon(char *pixelbuf, int image_width, int xposn, int yposn) {
} }
} }
void draw_letter(char *pixelbuf, unsigned char letter, int xposn, int yposn, int smalltext, int image_width, int image_height) { void draw_letter(char *pixelbuf, unsigned char letter, int xposn, int yposn, int textflags, int image_width, int image_height) {
/* Put a letter into a position */ /* Put a letter into a position */
int skip, x, y, glyph_no; int skip, x, y, glyph_no, max_x, max_y;
skip = 0; skip = 0;
if (letter < 33) { if (letter < 33) {
skip = 1; skip = 1;
} }
if ((letter > 127) && (letter < 161)) { if ((letter > 127) && (letter < 161)) {
skip = 1; skip = 1;
} }
if (xposn < 0 || yposn < 0) {
skip = 1;
}
if (skip == 0) { if (skip == 0) {
if (letter > 128) { if (letter > 128) {
glyph_no = letter - 66; glyph_no = letter - 66;
@ -570,38 +575,116 @@ void draw_letter(char *pixelbuf, unsigned char letter, int xposn, int yposn, int
} }
if (smalltext) { switch (textflags) {
for (y = 0; y < 9; y++) { case 1: // small font 5x9
for (x = 0; x < 5; x++) { max_x = 5;
max_y = 9;
if (xposn + max_x >= image_width) {
max_x = image_width - xposn - 1;
}
if (yposn + max_y >= image_height) {
max_y = image_height - yposn - 1;
}
for (y = 0; y < max_y; y++) {
for (x = 0; x < max_x; x++) {
if (small_font[(glyph_no * 9) + y] & (0x10 >> x)) { if (small_font[(glyph_no * 9) + y] & (0x10 >> x)) {
*(pixelbuf + (y * image_width) + (yposn * image_width) + xposn + x) = '1'; *(pixelbuf + (y * image_width) + (yposn * image_width) + xposn + x) = '1';
} }
} }
} }
break;
case 2: // bold font -> twice the regular font
{
max_x = 7;
max_y = 14;
if (xposn + max_x + 1 >= image_width) {
max_x = image_width - xposn - 2;
}
if (yposn + max_y >= image_height) {
max_y = image_height - yposn - 1;
}
char * linePtr = pixelbuf + (yposn * image_width) + xposn + 1;
for (y = 0; y < max_y; y++) {
char * pixelPtr = linePtr;
int extra_dot = 0;
for (x = 0; x < 7; x++) {
if (ascii_font[(glyph_no * 14) + y] & (0x40 >> x)) {
*pixelPtr = '1';
extra_dot = 1;
} else { } else {
for (y = 0; y < 14; y++) { if (extra_dot) {
*pixelPtr = '1';
}
extra_dot = 0;
}
++pixelPtr;
}
if (extra_dot) {
*pixelPtr = '1';
}
linePtr += image_width;
}
}
break;
default: // regular font 7x15
max_x = 7;
max_y = 14;
if (xposn + max_x >= image_width) {
max_x = image_width - xposn - 1;
}
if (yposn + max_y >= image_height) {
max_y = image_height - yposn - 1;
}
for (y = 0; y < max_y; y++) {
for (x = 0; x < 7; x++) { for (x = 0; x < 7; x++) {
if (ascii_font[(glyph_no * 14) + y] & (0x40 >> x)) { if (ascii_font[(glyph_no * 14) + y] & (0x40 >> x)) {
*(pixelbuf + (y * image_width) + (yposn * image_width) + xposn + x) = '1'; *(pixelbuf + (y * image_width) + (yposn * image_width) + xposn + x) = '1';
} }
} }
} }
break;
} }
} }
} }
/* Plot a string into the pixel buffer */ /* Plot a string into the pixel buffer */
void draw_string(char *pixbuf, char input_string[], int xposn, int yposn, int smalltext, int image_width, int image_height) { void draw_string(char *pixbuf, char input_string[], int xposn, int yposn, int textflags, int image_width, int image_height) {
int i, string_length, string_left_hand, letter_width = 7; int i, string_length, string_left_hand, letter_width = 7;
if (smalltext != 0) { switch (textflags) {
case 1: // small font 5x9
letter_width = 5; letter_width = 5;
break;
case 2: // bold font -> width of the regular font + 1 extra dot + 1 extra space
letter_width = 9;
break;
default: // regular font 7x15
letter_width = 7;
break;
} }
string_length = strlen(input_string); string_length = strlen(input_string);
string_left_hand = xposn - ((letter_width * string_length) / 2); string_left_hand = xposn - ((letter_width * string_length) / 2);
for (i = 0; i < string_length; i++) { for (i = 0; i < string_length; i++) {
draw_letter(pixbuf, input_string[i], string_left_hand + (i * letter_width), yposn, smalltext, image_width, image_height); draw_letter(pixbuf, input_string[i], string_left_hand + (i * letter_width), yposn, textflags, image_width, image_height);
} }
} }
@ -708,7 +791,7 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle, int data_type) {
float addon_text_posn, preset_height, large_bar_height; float addon_text_posn, preset_height, large_bar_height;
int i, r, textoffset, yoffset, xoffset, latch, image_width, image_height; int i, r, textoffset, yoffset, xoffset, latch, image_width, image_height;
char *pixelbuf; char *pixelbuf;
int addon_latch = 0, smalltext = 0; int addon_latch = 0, textflags = 0;
int this_row, block_width, plot_height, plot_yposn, textpos; int this_row, block_width, plot_height, plot_yposn, textpos;
float row_height, row_posn; float row_height, row_posn;
int error_number; int error_number;
@ -758,7 +841,10 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle, int data_type) {
addon_text_posn = 0.0; addon_text_posn = 0.0;
row_height = 0; row_height = 0;
if (symbol->output_options & SMALL_TEXT) { if (symbol->output_options & SMALL_TEXT) {
smalltext = 1; textflags = 1;
}
else if (symbol->output_options & BOLD_TEXT) {
textflags = 2;
} }
if (symbol->height == 0) { if (symbol->height == 0) {
@ -926,22 +1012,22 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle, int data_type) {
textpart[4] = '\0'; textpart[4] = '\0';
textpos = 2 * (17 + xoffset); textpos = 2 * (17 + xoffset);
draw_string(pixelbuf, textpart, textpos, default_text_posn, smalltext, image_width, image_height); draw_string(pixelbuf, textpart, textpos, default_text_posn, textflags, image_width, image_height);
for (i = 0; i < 4; i++) { for (i = 0; i < 4; i++) {
textpart[i] = local_text[i + 4]; textpart[i] = local_text[i + 4];
} }
textpart[4] = '\0'; textpart[4] = '\0';
textpos = 2 * (50 + xoffset); textpos = 2 * (50 + xoffset);
draw_string(pixelbuf, textpart, textpos, default_text_posn, smalltext, image_width, image_height); draw_string(pixelbuf, textpart, textpos, default_text_posn, textflags, image_width, image_height);
textdone = 1; textdone = 1;
switch (strlen(addon)) { switch (strlen(addon)) {
case 2: case 2:
textpos = 2 * (xoffset + 86); textpos = 2 * (xoffset + 86);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, smalltext, image_width, image_height); draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, textflags, image_width, image_height);
break; break;
case 5: case 5:
textpos = 2 * (xoffset + 100); textpos = 2 * (xoffset + 100);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, smalltext, image_width, image_height); draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, textflags, image_width, image_height);
break; break;
} }
@ -959,28 +1045,28 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle, int data_type) {
textpart[0] = local_text[0]; textpart[0] = local_text[0];
textpart[1] = '\0'; textpart[1] = '\0';
textpos = 2 * (-7 + xoffset); textpos = 2 * (-7 + xoffset);
draw_string(pixelbuf, textpart, textpos, default_text_posn, smalltext, image_width, image_height); draw_string(pixelbuf, textpart, textpos, default_text_posn, textflags, image_width, image_height);
for (i = 0; i < 6; i++) { for (i = 0; i < 6; i++) {
textpart[i] = local_text[i + 1]; textpart[i] = local_text[i + 1];
} }
textpart[6] = '\0'; textpart[6] = '\0';
textpos = 2 * (24 + xoffset); textpos = 2 * (24 + xoffset);
draw_string(pixelbuf, textpart, textpos, default_text_posn, smalltext, image_width, image_height); draw_string(pixelbuf, textpart, textpos, default_text_posn, textflags, image_width, image_height);
for (i = 0; i < 6; i++) { for (i = 0; i < 6; i++) {
textpart[i] = local_text[i + 7]; textpart[i] = local_text[i + 7];
} }
textpart[6] = '\0'; textpart[6] = '\0';
textpos = 2 * (71 + xoffset); textpos = 2 * (71 + xoffset);
draw_string(pixelbuf, textpart, textpos, default_text_posn, smalltext, image_width, image_height); draw_string(pixelbuf, textpart, textpos, default_text_posn, textflags, image_width, image_height);
textdone = 1; textdone = 1;
switch (strlen(addon)) { switch (strlen(addon)) {
case 2: case 2:
textpos = 2 * (xoffset + 114); textpos = 2 * (xoffset + 114);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, smalltext, image_width, image_height); draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, textflags, image_width, image_height);
break; break;
case 5: case 5:
textpos = 2 * (xoffset + 128); textpos = 2 * (xoffset + 128);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, smalltext, image_width, image_height); draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, textflags, image_width, image_height);
break; break;
} }
break; break;
@ -1030,32 +1116,32 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle, int data_type) {
textpart[0] = local_text[0]; textpart[0] = local_text[0];
textpart[1] = '\0'; textpart[1] = '\0';
textpos = 2 * (-5 + xoffset); textpos = 2 * (-5 + xoffset);
draw_string(pixelbuf, textpart, textpos, default_text_posn, smalltext, image_width, image_height); draw_string(pixelbuf, textpart, textpos, default_text_posn, textflags, image_width, image_height);
for (i = 0; i < 5; i++) { for (i = 0; i < 5; i++) {
textpart[i] = local_text[i + 1]; textpart[i] = local_text[i + 1];
} }
textpart[5] = '\0'; textpart[5] = '\0';
textpos = 2 * (27 + xoffset); textpos = 2 * (27 + xoffset);
draw_string(pixelbuf, textpart, textpos, default_text_posn, smalltext, image_width, image_height); draw_string(pixelbuf, textpart, textpos, default_text_posn, textflags, image_width, image_height);
for (i = 0; i < 5; i++) { for (i = 0; i < 5; i++) {
textpart[i] = local_text[i + 6]; textpart[i] = local_text[i + 6];
} }
textpart[6] = '\0'; textpart[6] = '\0';
textpos = 2 * (68 + xoffset); textpos = 2 * (68 + xoffset);
draw_string(pixelbuf, textpart, textpos, default_text_posn, smalltext, image_width, image_height); draw_string(pixelbuf, textpart, textpos, default_text_posn, textflags, image_width, image_height);
textpart[0] = local_text[11]; textpart[0] = local_text[11];
textpart[1] = '\0'; textpart[1] = '\0';
textpos = 2 * (100 + xoffset); textpos = 2 * (100 + xoffset);
draw_string(pixelbuf, textpart, textpos, default_text_posn, smalltext, image_width, image_height); draw_string(pixelbuf, textpart, textpos, default_text_posn, textflags, image_width, image_height);
textdone = 1; textdone = 1;
switch (strlen(addon)) { switch (strlen(addon)) {
case 2: case 2:
textpos = 2 * (xoffset + 116); textpos = 2 * (xoffset + 116);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, smalltext, image_width, image_height); draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, textflags, image_width, image_height);
break; break;
case 5: case 5:
textpos = 2 * (xoffset + 130); textpos = 2 * (xoffset + 130);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, smalltext, image_width, image_height); draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, textflags, image_width, image_height);
break; break;
} }
@ -1072,26 +1158,26 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle, int data_type) {
textpart[0] = local_text[0]; textpart[0] = local_text[0];
textpart[1] = '\0'; textpart[1] = '\0';
textpos = 2 * (-5 + xoffset); textpos = 2 * (-5 + xoffset);
draw_string(pixelbuf, textpart, textpos, default_text_posn, smalltext, image_width, image_height); draw_string(pixelbuf, textpart, textpos, default_text_posn, textflags, image_width, image_height);
for (i = 0; i < 6; i++) { for (i = 0; i < 6; i++) {
textpart[i] = local_text[i + 1]; textpart[i] = local_text[i + 1];
} }
textpart[6] = '\0'; textpart[6] = '\0';
textpos = 2 * (24 + xoffset); textpos = 2 * (24 + xoffset);
draw_string(pixelbuf, textpart, textpos, default_text_posn, smalltext, image_width, image_height); draw_string(pixelbuf, textpart, textpos, default_text_posn, textflags, image_width, image_height);
textpart[0] = local_text[7]; textpart[0] = local_text[7];
textpart[1] = '\0'; textpart[1] = '\0';
textpos = 2 * (55 + xoffset); textpos = 2 * (55 + xoffset);
draw_string(pixelbuf, textpart, textpos, default_text_posn, smalltext, image_width, image_height); draw_string(pixelbuf, textpart, textpos, default_text_posn, textflags, image_width, image_height);
textdone = 1; textdone = 1;
switch (strlen(addon)) { switch (strlen(addon)) {
case 2: case 2:
textpos = 2 * (xoffset + 70); textpos = 2 * (xoffset + 70);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, smalltext, image_width, image_height); draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, textflags, image_width, image_height);
break; break;
case 5: case 5:
textpos = 2 * (xoffset + 84); textpos = 2 * (xoffset + 84);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, smalltext, image_width, image_height); draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, textflags, image_width, image_height);
break; break;
} }
@ -1123,7 +1209,7 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle, int data_type) {
/* Put the human readable text at the bottom */ /* Put the human readable text at the bottom */
if ((textdone == 0) && (ustrlen(local_text) != 0)) { if ((textdone == 0) && (ustrlen(local_text) != 0)) {
textpos = (image_width / 2); textpos = (image_width / 2);
draw_string(pixelbuf, (char*) local_text, textpos, default_text_posn, smalltext, image_width, image_height); draw_string(pixelbuf, (char*) local_text, textpos, default_text_posn, textflags, image_width, image_height);
} }
error_number = png_to_file(symbol, image_height, image_width, pixelbuf, rotate_angle, data_type); error_number = png_to_file(symbol, image_height, image_width, pixelbuf, rotate_angle, data_type);

1
backend/zint.h
View File

@ -198,6 +198,7 @@ extern "C" {
#define BARCODE_STDOUT 8 #define BARCODE_STDOUT 8
#define READER_INIT 16 #define READER_INIT 16
#define SMALL_TEXT 32 #define SMALL_TEXT 32
#define BOLD_TEXT 64
#define DATA_MODE 0 #define DATA_MODE 0
#define UNICODE_MODE 1 #define UNICODE_MODE 1

5
frontend/main.c
View File

@ -104,6 +104,7 @@ void usage(void) {
" --dmre Allow Data Matrix Rectangular Extended\n" " --dmre Allow Data Matrix Rectangular Extended\n"
" --init Create reader initialisation symbol (Code 128)\n" " --init Create reader initialisation symbol (Code 128)\n"
" --smalltext Use half-size text in PNG images\n" " --smalltext Use half-size text in PNG images\n"
" --boldtext Use bold text in PNG images\n"
" --batch Treat each line of input as a separate data set\n" " --batch Treat each line of input as a separate data set\n"
, ZINT_VERSION); , ZINT_VERSION);
} }
@ -413,6 +414,7 @@ int main(int argc, char **argv) {
{"dmre", 0, 0, 0}, {"dmre", 0, 0, 0},
{"init", 0, 0, 0}, {"init", 0, 0, 0},
{"smalltext", 0, 0, 0}, {"smalltext", 0, 0, 0},
{"boldtext", 0, 0, 0},
{"batch", 0, 0, 0}, {"batch", 0, 0, 0},
{0, 0, 0, 0} {0, 0, 0, 0}
}; };
@ -433,6 +435,9 @@ int main(int argc, char **argv) {
if (!strcmp(long_options[option_index].name, "smalltext")) { if (!strcmp(long_options[option_index].name, "smalltext")) {
my_symbol->output_options += SMALL_TEXT; my_symbol->output_options += SMALL_TEXT;
} }
if (!strcmp(long_options[option_index].name, "boldtext")) {
my_symbol->output_options += BOLD_TEXT;
}
if (!strcmp(long_options[option_index].name, "directeps")) { if (!strcmp(long_options[option_index].name, "directeps")) {
my_symbol->output_options += BARCODE_STDOUT; my_symbol->output_options += BARCODE_STDOUT;
strncpy(my_symbol->outfile, "dummy.eps", 10); strncpy(my_symbol->outfile, "dummy.eps", 10);