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gimppixelrgn — Functions for operating on pixel regions.
struct GimpPixelRgn; void gimp_pixel_rgn_init (GimpPixelRgn *pr, GimpDrawable *drawable, gint x, gint y, gint width, gint height, gint dirty, gint shadow); void gimp_pixel_rgn_resize (GimpPixelRgn *pr, gint x, gint y, gint width, gint height); void gimp_pixel_rgn_get_pixel (GimpPixelRgn *pr, guchar *buf, gint x, gint y); void gimp_pixel_rgn_get_row (GimpPixelRgn *pr, guchar *buf, gint x, gint y, gint width); void gimp_pixel_rgn_get_col (GimpPixelRgn *pr, guchar *buf, gint x, gint y, gint height); void gimp_pixel_rgn_get_rect (GimpPixelRgn *pr, guchar *buf, gint x, gint y, gint width, gint height); void gimp_pixel_rgn_set_pixel (GimpPixelRgn *pr, const guchar *buf, gint x, gint y); void gimp_pixel_rgn_set_row (GimpPixelRgn *pr, const guchar *buf, gint x, gint y, gint width); void gimp_pixel_rgn_set_col (GimpPixelRgn *pr, const guchar *buf, gint x, gint y, gint height); void gimp_pixel_rgn_set_rect (GimpPixelRgn *pr, const guchar *buf, gint x, gint y, gint width, gint height); gpointer gimp_pixel_rgns_register (gint nrgns, ...); gpointer gimp_pixel_rgns_register2 (gint nrgns, GimpPixelRgn **prs); gpointer gimp_pixel_rgns_process (gpointer pri_ptr);
Functions for operating on pixel regions. These functions provide fast ways of accessing and modifying portions of a drawable.
struct GimpPixelRgn { guchar *data; /* pointer to region data */ GimpDrawable *drawable; /* pointer to drawable */ guint bpp; /* bytes per pixel */ guint rowstride; /* bytes per pixel row */ guint x, y; /* origin */ guint w, h; /* width and height of region */ guint dirty : 1; /* will this region be dirtied? */ guint shadow : 1; /* will this region use the shadow or normal tiles */ guint process_count; /* used internally */ };
void gimp_pixel_rgn_init (GimpPixelRgn *pr, GimpDrawable *drawable, gint x, gint y, gint width, gint height, gint dirty, gint shadow);
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void gimp_pixel_rgn_resize (GimpPixelRgn *pr, gint x, gint y, gint width, gint height);
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void gimp_pixel_rgn_get_pixel (GimpPixelRgn *pr, guchar *buf, gint x, gint y);
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void gimp_pixel_rgn_get_row (GimpPixelRgn *pr, guchar *buf, gint x, gint y, gint width);
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void gimp_pixel_rgn_get_col (GimpPixelRgn *pr, guchar *buf, gint x, gint y, gint height);
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void gimp_pixel_rgn_get_rect (GimpPixelRgn *pr, guchar *buf, gint x, gint y, gint width, gint height);
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void gimp_pixel_rgn_set_pixel (GimpPixelRgn *pr, const guchar *buf, gint x, gint y);
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void gimp_pixel_rgn_set_row (GimpPixelRgn *pr, const guchar *buf, gint x, gint y, gint width);
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void gimp_pixel_rgn_set_col (GimpPixelRgn *pr, const guchar *buf, gint x, gint y, gint height);
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void gimp_pixel_rgn_set_rect (GimpPixelRgn *pr, const guchar *buf, gint x, gint y, gint width, gint height);
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gpointer gimp_pixel_rgns_register (gint nrgns, ...);
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gpointer gimp_pixel_rgns_register2 (gint nrgns, GimpPixelRgn **prs);
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