diff options
Diffstat (limited to 'gs/src/gdevbbox.h')
| -rw-r--r-- | gs/src/gdevbbox.h | 48 |
1 files changed, 43 insertions, 5 deletions
diff --git a/gs/src/gdevbbox.h b/gs/src/gdevbbox.h index 79c61be15..35cffa706 100644 --- a/gs/src/gdevbbox.h +++ b/gs/src/gdevbbox.h @@ -70,17 +70,51 @@ * calls to their target. By default, they do propagate these calls: * use gx_device_bbox_fwd_open_close to change this if you want. */ +/* + * Define virtual procedures for managing the accumulated bounding box. + * These may be redefined by subclasses, and are also used for compositors. + */ +typedef struct gx_device_bbox_procs_s { + +#define dev_bbox_proc_init_box(proc)\ + bool proc(P1(void *proc_data)) + dev_bbox_proc_init_box((*init_box)); + +#define dev_bbox_proc_get_box(proc)\ + void proc(P2(const void *proc_data, gs_fixed_rect *pbox)) + dev_bbox_proc_get_box((*get_box)); + +#define dev_bbox_proc_add_rect(proc)\ + void proc(P5(void *proc_data, fixed x0, fixed y0, fixed x1, fixed y1)) + dev_bbox_proc_add_rect((*add_rect)); + +#define dev_bbox_proc_in_rect(proc)\ + bool proc(P2(const void *proc_data, const gs_fixed_rect *pbox)) + dev_bbox_proc_in_rect((*in_rect)); + +} gx_device_bbox_procs_t; +/* Default implementations */ +dev_bbox_proc_init_box(bbox_default_init_box); +dev_bbox_proc_get_box(bbox_default_get_box); +dev_bbox_proc_add_rect(bbox_default_add_rect); +dev_bbox_proc_in_rect(bbox_default_in_rect); + #define gx_device_bbox_common\ gx_device_forward_common;\ bool free_standing;\ bool forward_open_close;\ - /* In order to handle compositors, we provide a separate pointer */\ - /* to the bbox device instance that holds the actual box. */\ - gx_device_bbox *box_device;\ + gx_device_bbox_procs_t box_procs;\ + void *box_proc_data;\ + bool white_is_opaque;\ /* The following are updated dynamically. */\ gs_fixed_rect bbox;\ - gx_color_index black, white + gx_color_index black, white;\ + gx_color_index transparent /* white or gx_no_color_index */ typedef struct gx_device_bbox_s gx_device_bbox; +#define gx_device_bbox_common_initial(fs, foc, wio)\ + 0 /* target */,\ + fs, foc, {0}, 0, wio,\ + {{0, 0}, {0, 0}}, gx_no_color_index, gx_no_color_index, gx_no_color_index struct gx_device_bbox_s { gx_device_bbox_common; }; @@ -89,7 +123,7 @@ extern_st(st_device_bbox); #define public_st_device_bbox() /* in gdevbbox.c */\ gs_public_st_suffix_add1_final(st_device_bbox, gx_device_bbox,\ "gx_device_bbox", device_bbox_enum_ptrs, device_bbox_reloc_ptrs,\ - gx_device_finalize, st_device_forward, box_device) + gx_device_finalize, st_device_forward, box_proc_data) /* Initialize a bounding box device. */ void gx_device_bbox_init(P2(gx_device_bbox * dev, gx_device * target)); @@ -98,6 +132,10 @@ void gx_device_bbox_init(P2(gx_device_bbox * dev, gx_device * target)); void gx_device_bbox_fwd_open_close(P2(gx_device_bbox * dev, bool forward_open_close)); +/* Set whether a bounding box device considers white to be opaque. */ +void gx_device_bbox_set_white_opaque(P2(gx_device_bbox *dev, + bool white_is_opaque)); + /* Read back the bounding box in 1/72" units. */ void gx_device_bbox_bbox(P2(gx_device_bbox * dev, gs_rect * pbbox)); |