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Add alpha channel support and --nobackground option

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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
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6
backend/output.c
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@@ -39,11 +39,11 @@
INTERNAL int output_check_colour_options(struct zint_symbol *symbol) {
int error_number;
if (strlen(symbol->fgcolour) != 6) {
if ((strlen(symbol->fgcolour) != 6) && (strlen(symbol->fgcolour) != 8)) {
strcpy(symbol->errtxt, "651: Malformed foreground colour target");
return ZINT_ERROR_INVALID_OPTION;
}
if (strlen(symbol->bgcolour) != 6) {
if ((strlen(symbol->bgcolour) != 6) && (strlen(symbol->bgcolour) != 8)) {
strcpy(symbol->errtxt, "652: Malformed background colour target");
return ZINT_ERROR_INVALID_OPTION;
}
@@ -57,7 +57,7 @@ INTERNAL int output_check_colour_options(struct zint_symbol *symbol) {
return ZINT_ERROR_INVALID_OPTION;
}
error_number = is_sane(SSET, (unsigned char *) symbol->bgcolour, strlen(symbol->fgcolour));
error_number = is_sane(SSET, (unsigned char *) symbol->bgcolour, strlen(symbol->bgcolour));
if (error_number == ZINT_ERROR_INVALID_DATA) {
strcpy(symbol->errtxt, "654: Malformed background colour target");
return ZINT_ERROR_INVALID_OPTION;