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Added scale value to change size of output image

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This commit is contained in:
hooper114
2008-12-20 15:21:04 +00:00
parent 909394478f
commit 960d46981a
4 changed files with 153 additions and 148 deletions
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128
backend/png.c
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@@ -114,6 +114,7 @@ int png_to_file(struct zint_symbol *symbol, int image_height, int image_width, c
strcpy(symbol->errtxt, "Can't open output file [B5]");
return ERROR_FILE_ACCESS;
}
/* graphic->outfile = stdout; */
/* Set up error handling routine as proc() above */
png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, graphic,
@@ -276,12 +277,12 @@ void draw_bar(char *pixelbuf, int xpos, int xlen, int ypos, int ylen, int image_
/* Draw a rectangle */
int i, j, png_ypos;
png_ypos = (image_height / 2) - ypos - ylen;
png_ypos = image_height - ypos - ylen;
/* This fudge is needed because EPS measures height from the bottom up but
PNG measures y position from the top down */
for(i = (xpos * 2); i < (2 * (xpos + xlen)); i++) {
for( j = (png_ypos * 2); j < (2 * (png_ypos + ylen)); j++) {
for(i = (xpos); i < (xpos + xlen); i++) {
for( j = (png_ypos); j < (png_ypos + ylen); j++) {
*(pixelbuf + (image_width * j) + i) = '1';
}
}
@@ -418,6 +419,7 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle)
int this_row, block_width, plot_height, plot_yposn, textpos;
float row_height, row_posn;
int error_number;
int scaler = (int)(2 * symbol->scale);
textdone = 0;
main_width = symbol->width;
@@ -499,8 +501,8 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle)
}
xoffset = symbol->border_width + symbol->whitespace_width;
yoffset = symbol->border_width;
image_width = 2 * (symbol->width + xoffset + xoffset);
image_height = 2 * (symbol->height + textoffset + yoffset + yoffset);
image_width = scaler * (symbol->width + xoffset + xoffset);
image_height = scaler * (symbol->height + textoffset + yoffset + yoffset);
if (!(pixelbuf = (char *) malloc(image_width * image_height))) {
printf("Insifficient memory for pixel buffer [BA]");
@@ -552,7 +554,7 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle)
}
if(latch == 1) {
/* a bar */
draw_bar(pixelbuf, (i + xoffset), block_width, plot_yposn, plot_height, image_width, image_height);
draw_bar(pixelbuf, (i + xoffset) * scaler, block_width * scaler, plot_yposn * scaler, plot_height * scaler, image_width, image_height);
latch = 0;
} else {
/* a space */
@@ -571,33 +573,33 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle)
case 8: /* EAN-8 */
case 11:
case 14:
draw_bar(pixelbuf, (0 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (2 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (32 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (34 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (64 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (66 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (0 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (2 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (32 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (34 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (64 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (66 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
for(i = 0; i < 4; i++) {
textpart[i] = symbol->text[i];
}
textpart[4] = '\0';
textpos = 2 * (17 + xoffset);
textpos = scaler * (17 + xoffset);
draw_string(pixelbuf, textpart, textpos, (image_height - 17), image_width, image_height);
for(i = 0; i < 4; i++) {
textpart[i] = symbol->text[i + 4];
}
textpart[4] = '\0';
textpos = 2 * (50 + xoffset);
textpos = scaler * (50 + xoffset);
draw_string(pixelbuf, textpart, textpos, (image_height - 17), image_width, image_height);
textdone = 1;
switch(strlen(addon)) {
case 2:
textpos = 2 * (symbol->width + xoffset - 10);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, image_width, image_height);
textpos = scaler * (symbol->width + xoffset - 10);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * scaler) - 13, image_width, image_height);
break;
case 5:
textpos = 2 * (symbol->width + xoffset - 23);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, image_width, image_height);
textpos = scaler * (symbol->width + xoffset - 23);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * scaler) - 13, image_width, image_height);
break;
}
@@ -605,38 +607,38 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle)
case 13: /* EAN 13 */
case 16:
case 19:
draw_bar(pixelbuf, (0 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (2 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (46 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (48 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (92 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (94 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (0 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (2 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (46 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (48 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (92 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (94 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
textpart[0] = symbol->text[0];
textpart[1] = '\0';
textpos = 2 * (-7 + xoffset);
textpos = scaler * (-7 + xoffset);
draw_string(pixelbuf, textpart, textpos, (image_height - 17), image_width, image_height);
for(i = 0; i < 6; i++) {
textpart[i] = symbol->text[i + 1];
}
textpart[6] = '\0';
textpos = 2 * (24 + xoffset);
textpos = scaler * (24 + xoffset);
draw_string(pixelbuf, textpart, textpos, (image_height - 17), image_width, image_height);
for(i = 0; i < 6; i++) {
textpart[i] = symbol->text[i + 7];
}
textpart[6] = '\0';
textpos = 2 * (71 + xoffset);
textpos = scaler * (71 + xoffset);
draw_string(pixelbuf, textpart, textpos, (image_height - 17), image_width, image_height);
textdone = 1;
switch(strlen(addon)) {
case 2:
textpos = 2 * (symbol->width + xoffset - 10);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, image_width, image_height);
textpos = scaler * (symbol->width + xoffset - 10);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * scaler) - 13, image_width, image_height);
break;
case 5:
textpos = 2 * (symbol->width + xoffset - 23);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, image_width, image_height);
textpos = scaler * (symbol->width + xoffset - 23);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * scaler) - 13, image_width, image_height);
break;
}
break;
@@ -656,7 +658,7 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle)
} while (symbol->encoded_data[symbol->rows - 1][i + block_width] == symbol->encoded_data[symbol->rows - 1][i]);
if(latch == 1) {
/* a bar */
draw_bar(pixelbuf, (i + xoffset - comp_offset), block_width, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (i + xoffset - comp_offset) * scaler, block_width * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
latch = 0;
} else {
/* a space */
@@ -664,8 +666,8 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle)
}
i += block_width;
} while (i < 11 + comp_offset);
draw_bar(pixelbuf, (46 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (48 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (46 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (48 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
latch = 1;
i = 85 + comp_offset;
do {
@@ -675,7 +677,7 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle)
} while (symbol->encoded_data[symbol->rows - 1][i + block_width] == symbol->encoded_data[symbol->rows - 1][i]);
if(latch == 1) {
/* a bar */
draw_bar(pixelbuf, (i + xoffset - comp_offset), block_width, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (i + xoffset - comp_offset) * scaler, block_width * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
latch = 0;
} else {
/* a space */
@@ -685,33 +687,33 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle)
} while (i < 96 + comp_offset);
textpart[0] = symbol->text[0];
textpart[1] = '\0';
textpos = 2 * (-5 + xoffset);
textpos = scaler * (-5 + xoffset);
draw_string(pixelbuf, textpart, textpos, (image_height - 17), image_width, image_height);
for(i = 0; i < 5; i++) {
textpart[i] = symbol->text[i + 1];
}
textpart[5] = '\0';
textpos = 2 * (27 + xoffset);
textpos = scaler * (27 + xoffset);
draw_string(pixelbuf, textpart, textpos, (image_height - 17), image_width, image_height);
for(i = 0; i < 5; i++) {
textpart[i] = symbol->text[i + 6];
}
textpart[6] = '\0';
textpos = 2 * (68 + xoffset);
textpos = scaler * (68 + xoffset);
draw_string(pixelbuf, textpart, textpos, (image_height - 17), image_width, image_height);
textpart[0] = symbol->text[11];
textpart[1] = '\0';
textpos = 2 * (100 + xoffset);
textpos = scaler * (100 + xoffset);
draw_string(pixelbuf, textpart, textpos, (image_height - 17), image_width, image_height);
textdone = 1;
switch(strlen(addon)) {
case 2:
textpos = 2 * (symbol->width + xoffset - 10);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, image_width, image_height);
textpos = scaler * (symbol->width + xoffset - 10);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * scaler) - 13, image_width, image_height);
break;
case 5:
textpos = 2 * (symbol->width + xoffset - 23);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, image_width, image_height);
textpos = scaler * (symbol->width + xoffset - 23);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * scaler) - 13, image_width, image_height);
break;
}
@@ -719,35 +721,35 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle)
if (((symbol->symbology == BARCODE_UPCE) && (symbol->rows == 1)) || (symbol->symbology == BARCODE_UPCE_CC)) {
/* guard bar extensions and text formatting for UPCE */
draw_bar(pixelbuf, (0 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (2 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (46 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (48 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (50 + xoffset), 1, (4 + (int)yoffset), 5, image_width, image_height);
draw_bar(pixelbuf, (0 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (2 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (46 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (48 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
draw_bar(pixelbuf, (50 + xoffset) * scaler, 1 * scaler, (4 + (int)yoffset) * scaler, 5 * scaler, image_width, image_height);
textpart[0] = symbol->text[0];
textpart[1] = '\0';
textpos = 2 * (-5 + xoffset);
textpos = scaler * (-5 + xoffset);
draw_string(pixelbuf, textpart, textpos, (image_height - 17), image_width, image_height);
for(i = 0; i < 6; i++) {
textpart[i] = symbol->text[i + 1];
}
textpart[6] = '\0';
textpos = 2 * (24 + xoffset);
textpos = scaler * (24 + xoffset);
draw_string(pixelbuf, textpart, textpos, (image_height - 17), image_width, image_height);
textpart[0] = symbol->text[7];
textpart[1] = '\0';
textpos = 2 * (55 + xoffset);
textpos = scaler * (55 + xoffset);
draw_string(pixelbuf, textpart, textpos, (image_height - 17), image_width, image_height);
textdone = 1;
switch(strlen(addon)) {
case 2:
textpos = 2 * (symbol->width + xoffset - 10);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, image_width, image_height);
textpos = scaler * (symbol->width + xoffset - 10);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * scaler) - 13, image_width, image_height);
break;
case 5:
textpos = 2 * (symbol->width + xoffset - 23);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * 2) - 13, image_width, image_height);
textpos = scaler * (symbol->width + xoffset - 23);
draw_string(pixelbuf, addon, textpos, image_height - (addon_text_posn * scaler) - 13, image_width, image_height);
break;
}
@@ -759,22 +761,22 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle)
if ((symbol->output_options == BARCODE_BOX) || (symbol->output_options == BARCODE_BIND)) {
if(symbol->symbology != BARCODE_CODABLOCKF) {
/* boundary bars */
draw_bar(pixelbuf, 0, (symbol->width + xoffset + xoffset), textoffset, symbol->border_width, image_width, image_height);
draw_bar(pixelbuf, 0, (symbol->width + xoffset + xoffset), (textoffset + symbol->height + symbol->border_width), symbol->border_width, image_width, image_height);
draw_bar(pixelbuf, 0, (symbol->width + xoffset + xoffset) * scaler, textoffset * scaler, symbol->border_width * scaler, image_width, image_height);
draw_bar(pixelbuf, 0, (symbol->width + xoffset + xoffset) * scaler, (textoffset + symbol->height + symbol->border_width) * scaler, symbol->border_width * scaler, image_width, image_height);
if(symbol->rows > 1) {
/* row binding */
for(r = 1; r < symbol->rows; r++) {
draw_bar(pixelbuf, xoffset, symbol->width, ((r * row_height) + textoffset + yoffset - 1), 2, image_width, image_height);
draw_bar(pixelbuf, xoffset * scaler, symbol->width * scaler, ((r * row_height) + textoffset + yoffset - 1) * scaler, 2 * scaler, image_width, image_height);
}
}
} else {
/* boundary bars */
draw_bar(pixelbuf, xoffset, symbol->width, textoffset, symbol->border_width, image_width, image_height);
draw_bar(pixelbuf, xoffset, symbol->width, (textoffset + symbol->height + symbol->border_width), symbol->border_width, image_width, image_height);
draw_bar(pixelbuf, xoffset * scaler, symbol->width * scaler, textoffset * scaler, symbol->border_width * scaler, image_width, image_height);
draw_bar(pixelbuf, xoffset * scaler, symbol->width * scaler, (textoffset + symbol->height + symbol->border_width) * scaler, symbol->border_width * scaler, image_width, image_height);
if(symbol->rows > 1) {
/* row binding */
for(r = 1; r < symbol->rows; r++) {
draw_bar(pixelbuf, (xoffset + 11), (symbol->width - 24), ((r * row_height) + textoffset + yoffset - 1), 2, image_width, image_height);
draw_bar(pixelbuf, (xoffset + 11) * scaler, (symbol->width - 24) * scaler, ((r * row_height) + textoffset + yoffset - 1) * scaler, 2 * scaler, image_width, image_height);
}
}
}
@@ -782,8 +784,8 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle)
if (symbol->output_options == BARCODE_BOX) {
/* side bars */
draw_bar(pixelbuf, 0, symbol->border_width, textoffset, symbol->height + (2 * symbol->border_width), image_width, image_height);
draw_bar(pixelbuf, (symbol->width + xoffset + xoffset - symbol->border_width), symbol->border_width, textoffset, symbol->height + (2 * symbol->border_width), image_width, image_height);
draw_bar(pixelbuf, 0, symbol->border_width * scaler, textoffset * scaler, (symbol->height + (2 * symbol->border_width)) * scaler, image_width, image_height);
draw_bar(pixelbuf, (symbol->width + xoffset + xoffset - symbol->border_width) * scaler, symbol->border_width * scaler, textoffset * scaler, (symbol->height + (2 * symbol->border_width)) * scaler, image_width, image_height);
}
/* Put the human readable text at the bottom */