mirrors/zint-barcode-generator
1
0
Fork 0
mirror of https://git.code.sf.net/p/zint/code synced 2025-05-12 22:25:59 -04:00
Code Issues Projects Releases Packages Wiki Activity

Add alpha channel support and --nobackground option

Browse source 
Alpha channel for PNG and SVG and option to remove background from EMF
This commit is contained in:
Robin Stuart 2020-08-02 22:26:39 +01:00
parent 18e3b41e0f
commit 47cac63e7f
9 changed files with 195 additions and 72 deletions
Download patch file Download diff file Expand all files Collapse all files

31
backend/emf.c
View file

@ -186,6 +186,7 @@ INTERNAL int emf_plot(struct zint_symbol *symbol) {
int rectangle_count_bycolour[8];
unsigned char *this_string[6];
uint32_t spacing;
int draw_background = 1;
float ax, ay, bx, by, cx, cy, dx, dy, ex, ey, fx, fy;
@ -223,6 +224,12 @@ INTERNAL int emf_plot(struct zint_symbol *symbol) {
bgred = (16 * ctoi(symbol->bgcolour[0])) + ctoi(symbol->bgcolour[1]);
bggrn = (16 * ctoi(symbol->bgcolour[2])) + ctoi(symbol->bgcolour[3]);
bgblu = (16 * ctoi(symbol->bgcolour[4])) + ctoi(symbol->bgcolour[5]);
if (strlen(symbol->bgcolour) > 6) {
if ((ctoi(symbol->bgcolour[6]) == 0) && (ctoi(symbol->bgcolour[7]) == 0)) {
draw_background = 0;
}
}
rectangle_count = count_rectangles(symbol);
circle_count = count_circles(symbol);
@ -372,15 +379,17 @@ INTERNAL int emf_plot(struct zint_symbol *symbol) {
bytecount += 12;
recordcount++;
/* Make background from a rectangle */
background.type = 0x0000002b; // EMR_RECTANGLE;
background.size = 24;
background.box.top = 0;
background.box.left = 0;
background.box.right = emr_header.emf_header.bounds.right;
background.box.bottom = emr_header.emf_header.bounds.bottom;
bytecount += 24;
recordcount++;
if (draw_background) {
/* Make background from a rectangle */
background.type = 0x0000002b; // EMR_RECTANGLE;
background.size = 24;
background.box.top = 0;
background.box.left = 0;
background.box.right = emr_header.emf_header.bounds.right;
background.box.bottom = emr_header.emf_header.bounds.bottom;
bytecount += 24;
recordcount++;
}
//Rectangles
rect = symbol->vector->rectangles;
@ -578,7 +587,9 @@ INTERNAL int emf_plot(struct zint_symbol *symbol) {
fwrite(&emr_selectobject_bgbrush, sizeof (emr_selectobject_t), 1, emf_file);
fwrite(&emr_selectobject_pen, sizeof (emr_selectobject_t), 1, emf_file);
fwrite(&background, sizeof (emr_rectangle_t), 1, emf_file);
if (draw_background) {
fwrite(&background, sizeof (emr_rectangle_t), 1, emf_file);
}
if (symbol->symbology == BARCODE_ULTRA) {
for(i = 0; i < 8; i++) {