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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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36
backend/zint.h
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@ -37,25 +37,12 @@
extern "C" {
#endif /* __cplusplus */
struct zint_render_line {
float x, y, length, width;
struct zint_render_line *next; /* Pointer to next line */
};
struct zint_vector_rect {
float x, y, height, width;
int colour;
struct zint_vector_rect *next;
};
struct zint_render_string {
float x, y, fsize;
float width; /* Suggested string width, may be 0 if none recommended */
int length;
unsigned char *text;
struct zint_render_string *next; /* Pointer to next character */
};
struct zint_vector_string {
float x, y, fsize;
float width; /* Suggested string width, may be 0 if none recommended */
@ -64,35 +51,17 @@ extern "C" {
struct zint_vector_string *next; /* Pointer to next character */
};
struct zint_render_ring {
float x, y, radius, line_width;
struct zint_render_ring *next; /* Pointer to next ring */
};
struct zint_vector_circle {
float x, y, diameter;
int colour;
struct zint_vector_circle *next; /* Pointer to next circle */
};
struct zint_render_hexagon {
float x, y, height;
struct zint_render_hexagon *next; /* Pointer to next hexagon */
};
struct zint_vector_hexagon {
float x, y, diameter;
struct zint_vector_hexagon *next; /* Pointer to next hexagon */
};
struct zint_render {
float width, height;
struct zint_render_line *lines; /* Pointer to first line */
struct zint_render_string *strings; /* Pointer to first string */
struct zint_render_ring *rings; /* Pointer to first ring */
struct zint_render_hexagon *hexagons; /* Pointer to first hexagon */
};
struct zint_vector {
float width, height;
struct zint_vector_rect *rectangles; /* Pointer to first rectangle */
@ -108,7 +77,9 @@ extern "C" {
int border_width;
int output_options;
char fgcolour[10];
char *fgcolor; // pointer to fgcolour
char bgcolour[10];
char *bgcolor; // pointer to bgcolour
char outfile[256];
float scale;
int option_1;
@ -128,6 +99,7 @@ extern "C" {
unsigned char *bitmap;
int bitmap_width;
int bitmap_height;
unsigned char *alphamap;
unsigned int bitmap_byte_length;
float dot_size;
struct zint_vector *vector;