#define __gfxfilter_h__
#include "gfxdevice.h"
+#include "types.h"
#ifdef __cplusplus
extern "C" {
#endif
+typedef enum {gfxfilter_none, gfxfilter_onepass, gfxfilter_twopass} gfxfiltertype_t;
+
+typedef struct _gfxfilterbase
+{
+ gfxfiltertype_t type;
+} gfxfilterbase_t;
+
typedef struct _gfxfilter
{
+ gfxfiltertype_t type;
int num_passes;
const char*name;
+
int pass;
int (*setparameter)(struct _gfxfilter*in, const char*key, const char*value, struct _gfxdevice*out);
void (*drawlink)(struct _gfxfilter*in, gfxline_t*line, const char*action, struct _gfxdevice*out);
void (*endpage)(struct _gfxfilter*in, struct _gfxdevice*out);
gfxresult_t* (*finish)(struct _gfxfilter*in, struct _gfxdevice*out);
+
+ void (*dealloc)(struct _gfxfilter*f);
+
void* internal;
} gfxfilter_t;
typedef struct _gfxtwopassfilter
{
+ gfxfiltertype_t type;
gfxfilter_t pass1;
gfxfilter_t pass2;
} gfxtwopassfilter_t;
gfxdevice_t*gfxfilter_apply(gfxfilter_t*filter, gfxdevice_t*dev);
gfxdevice_t*gfxtwopassfilter_apply(gfxtwopassfilter_t*filter, gfxdevice_t*dev);
+typedef struct _gfxfilterchain {
+ gfxfilterbase_t*filter;
+ struct _gfxfilterchain*next;
+} gfxfilterchain_t;
+
+gfxfilterchain_t* gfxfilterchain_parse(const char*filterexpr);
+gfxdevice_t* gfxfilterchain_apply(gfxfilterchain_t*chain, gfxdevice_t*dev);
+void gfxfilterchain_destroy(gfxfilterchain_t*chain);
+
+#define wrap_filter(dev, name, args...) \
+ {gfxfilter_t f_##name; \
+ gfxfilter_##name##_init(&f_##name, ## args); \
+ dev = gfxfilter_apply(&f_##name, dev); \
+ }
+
+#define wrap_filter2(dev, name, args...) \
+ {gfxtwopassfilter_t f_##name; \
+ gfxtwopassfilter_##name##_init(&f_##name, ## args); \
+ dev = gfxtwopassfilter_apply(&f_##name, dev); \
+ }
+
+/* known filters */
+void gfxfilter_maketransparent_init(gfxfilter_t*f, U8 alpha);
+void gfxtwopassfilter_remove_font_transforms_init(gfxtwopassfilter_t*f);
+void gfxtwopassfilter_one_big_font_init(gfxtwopassfilter_t*f);
+void gfxtwopassfilter_vectors_to_glyphs_init(gfxtwopassfilter_t*f);
+
+
#ifdef __cplusplus
}
#endif