1 files changed, 77 insertions, 0 deletions
diff --git a/base/gxstate.h b/base/gxstate.h
new file mode 100644
index 00000000..68ed3bb3
--- /dev/null
+++ b/base/gxstate.h
@@ -0,0 +1,77 @@
+/* Copyright (C) 2001-2019 Artifex Software, Inc.
+   All Rights Reserved.
+
+   This software is provided AS-IS with no warranty, either express or
+   implied.
+
+   This software is distributed under license and may not be copied,
+   modified or distributed except as expressly authorized under the terms
+   of the license contained in the file LICENSE in this distribution.
+
+   Refer to licensing information at http://www.artifex.com or contact
+   Artifex Software, Inc.,  1305 Grant Avenue - Suite 200, Novato,
+   CA 94945, U.S.A., +1(415)492-9861, for further information.
+*/
+
+
+/* Internal graphics state API */
+
+#ifndef gxstate_INCLUDED
+#  define gxstate_INCLUDED
+
+#include "gsgstate.h"
+#include "gscspace.h"
+
+/*
+ * The interfaces in this file are for internal use only, primarily by the
+ * interpreter.  They are not guaranteed to remain stable from one release
+ * to another.
+ */
+
+/* Memory and save/restore management */
+gs_memory_t *gs_gstate_memory(const gs_gstate *);
+gs_gstate *gs_gstate_saved(const gs_gstate *);
+gs_gstate *gs_gstate_swap_saved(gs_gstate *, gs_gstate *);
+gs_memory_t *gs_gstate_swap_memory(gs_gstate *, gs_memory_t *);
+
+/*
+ * "Client data" interface for graphics states.
+ *
+ * As of release 4.36, the copy procedure is superseded by copy_for
+ * (although it will still be called if there is no copy_for procedure).
+ */
+typedef void *(*gs_gstate_alloc_proc_t) (gs_memory_t * mem);
+typedef int (*gs_gstate_copy_proc_t) (void *to, const void *from);
+typedef void (*gs_gstate_free_proc_t) (void *old, gs_memory_t * mem);
+
+typedef enum {
+    copy_for_gsave,		/* from = current, to = new(saved) */
+    copy_for_grestore,		/* from = saved, to = current */
+    copy_for_gstate,		/* from = current, to = new(copy) */
+    copy_for_setgstate,		/* from = stored, to = current */
+    copy_for_copygstate,	/* from & to are specified explicitly */
+    copy_for_currentgstate	/* from = current, to = stored */
+} gs_gstate_copy_reason_t;
+
+/* Note that the 'from' argument of copy_for is not const. */
+/* This is deliberate -- some clients need this. */
+typedef int (*gs_gstate_copy_for_proc_t) (void *to, void *from,
+                                         gs_gstate_copy_reason_t reason);
+typedef struct gs_gstate_client_procs_s {
+    gs_gstate_alloc_proc_t alloc;
+    gs_gstate_copy_proc_t copy;
+    gs_gstate_free_proc_t free;
+    gs_gstate_copy_for_proc_t copy_for;
+} gs_gstate_client_procs;
+void gs_gstate_set_client(gs_gstate *, void *, const gs_gstate_client_procs *,
+                            bool client_has_pattern_streams);
+
+/* gzstate.h redefines the following: */
+#ifndef gs_gstate_client_data
+void *gs_gstate_client_data(const gs_gstate *);
+#endif
+
+/* Accessories. */
+gs_id gx_get_clip_path_id(gs_gstate *);
+
+#endif /* gxstate_INCLUDED */