Initial commit

1 files changed, 46 insertions, 0 deletions

diff --git a/sys/gio/gim/gimqras.x b/sys/gio/gim/gimqras.x
new file mode 100644
index 00000000..fa8f5909
--- /dev/null
+++ b/sys/gio/gim/gimqras.x
@@ -0,0 +1,46 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<syserr.h>
+include	<gescape.h>
+include	<fset.h>
+include	<gio.h>
+
+# GIM_QUERYRASTER -- Query a raster.  The function value (YES/NO) indicates
+# whether or not the raster exists.  If the raster exists, the raster type
+# and size are returned as output arguments.
+
+int procedure gim_queryraster (gp, raster, type, width, height, depth)
+
+pointer	gp			#I graphics descriptor
+int	raster			#I raster number (0 is display window)
+int	type			#O raster type (ximage,pixmap)
+int	width			#O raster width in pixels
+int	height			#O raster height in pixels
+int	depth			#O raster depth, bits per pixel
+
+int	nchars, nread
+short	gim[GIM_QUERYRASTER_LEN]
+short	retval[GIM_RET_QRAS_LEN]
+errchk	gescape, flush, read, syserrs
+int	read()
+
+begin
+	call gpl_flush()
+	gim[GIM_QUERYRASTER_RN] = raster
+	call gescape (gp, GIM_QUERYRASTER, gim, GIM_QUERYRASTER_LEN)
+	call flush (GP_FD(gp))
+
+	# This assumes a normal stream type GKI connection.
+	nchars = GIM_RET_QRAS_LEN * SZ_SHORT
+	nread = read (GP_FD(gp), retval, nchars)
+	call fseti (GP_FD(gp), F_CANCEL, OK)
+	if (nread != nchars)
+	    call syserrs (SYS_FREAD, "gim_queryraster")
+
+	type   = retval[GIM_RET_QRAS_RT]
+	width  = retval[GIM_RET_QRAS_NX]
+	height = retval[GIM_RET_QRAS_NY]
+	depth  = retval[GIM_RET_QRAS_BP]
+
+	return (retval[GIM_RET_QRAS_EX])
+end