Adding upstream version 4.9.0.upstream/4.9.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 163 insertions, 0 deletions

diff --git a/layer.h b/layer.h
new file mode 100644
index 0000000..ca18bea
--- /dev/null
+++ b/layer.h
@@ -0,0 +1,163 @@
+/* Copyright (c) 2008, 2009
+ *      Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
+ *      Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
+ *      Micah Cowan (micah@cowan.name)
+ *      Sadrul Habib Chowdhury (sadrul@users.sourceforge.net)
+ * Copyright (c) 1993-2002, 2003, 2005, 2006, 2007
+ *      Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
+ *      Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
+ * Copyright (c) 1987 Oliver Laumann
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program (see the file COPYING); if not, see
+ * https://www.gnu.org/licenses/, or contact Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
+ *
+ ****************************************************************
+ * $Id$ GNU
+ */
+
+#ifndef SCREEN_LAYER_H
+#define SCREEN_LAYER_H
+
+/*
+ * This is the overlay structure. It is used to create a seperate
+ * layer over the current windows.
+ */
+
+struct mchar;	/* forward declaration */
+
+struct LayFuncs
+{
+  void	(*lf_LayProcess) __P((char **, int *));
+  void	(*lf_LayAbort) __P((void));
+  void	(*lf_LayRedisplayLine) __P((int, int, int, int));
+  void	(*lf_LayClearLine) __P((int, int, int, int));
+  int	(*lf_LayRewrite) __P((int, int, int, struct mchar *, int));
+  int	(*lf_LayResize) __P((int, int));
+  void	(*lf_LayRestore) __P((void));
+  void  (*lf_LayFree) __P((void *));	/* Should only free any data kept in
+					   flayer->l_data (but not flayer->l_data itself). */
+};
+
+struct layer
+{
+  struct canvas *l_cvlist;	/* list of canvases displaying layer */
+  int	 l_width;
+  int	 l_height;
+  int    l_x;			/* cursor position */
+  int    l_y;
+  int    l_encoding;
+  struct LayFuncs *l_layfn;
+  void	*l_data;
+
+  struct layer *l_next;		/* layer stack, should be in data? */
+  struct layer *l_bottom;	/* bottom element of layer stack */
+  int	 l_blocking;
+  int	 l_mode;		/* non-zero == edit mode */
+
+  struct {
+    unsigned char buffer[3];	/* [0]: the button
+				   [1]: x
+				   [2]: y
+				*/
+    int len;
+    int start;
+  } l_mouseevent;
+
+  struct {
+    int d : 1;		/* Is the output for the layer blocked? */
+
+    /* After unpausing, what region should we refresh? */
+    int *left, *right;
+    int top, bottom;
+    int lines;
+  } l_pause;
+};
+
+#define LayProcess		(*flayer->l_layfn->lf_LayProcess)
+#define LayAbort		(*flayer->l_layfn->lf_LayAbort)
+#define LayRedisplayLine	(*flayer->l_layfn->lf_LayRedisplayLine)
+#define LayClearLine		(*flayer->l_layfn->lf_LayClearLine)
+#define LayRewrite		(*flayer->l_layfn->lf_LayRewrite)
+#define LayResize		(*flayer->l_layfn->lf_LayResize)
+#define LayRestore		(*flayer->l_layfn->lf_LayRestore)
+#define LayFree		(*flayer->l_layfn->lf_LayFree)
+
+#define LaySetCursor()	LGotoPos(flayer, flayer->l_x, flayer->l_y)
+#define LayCanResize(l)	(l->l_layfn->LayResize != DefResize)
+
+/* XXX: AArgh! think again! */
+
+#define LAY_CALL_UP(fn) do				\
+	{ 						\
+	  struct layer *oldlay = flayer; 		\
+	  struct canvas *oldcvlist, *cv;		\
+	  debug("LayCallUp\n");				\
+	  flayer = flayer->l_next;			\
+	  oldcvlist = flayer->l_cvlist;			\
+	  debug1("oldcvlist: %x\n", oldcvlist);		\
+	  flayer->l_cvlist = oldlay->l_cvlist;		\
+	  for (cv = flayer->l_cvlist; cv; cv = cv->c_lnext)	\
+		cv->c_layer = flayer;			\
+	  fn;						\
+	  flayer = oldlay;				\
+	  for (cv = flayer->l_cvlist; cv; cv = cv->c_lnext)	\
+		cv->c_layer = flayer;			\
+	  flayer->l_next->l_cvlist = oldcvlist;		\
+	} while(0)
+
+#define LAY_DISPLAYS(l, fn) do				\
+	{ 						\
+	  struct display *olddisplay = display;		\
+	  struct canvas *cv;				\
+	  for (display = displays; display; display = display->d_next) \
+	    {						\
+	      for (cv = D_cvlist; cv; cv = cv->c_next)	\
+		if (cv->c_layer == l)			\
+		  break;				\
+	      if (cv == 0)				\
+		continue;				\
+	      fn;					\
+	    }						\
+	  display = olddisplay;				\
+	} while(0)
+
+#endif /* SCREEN_LAYER_H */
+
+/**
+ * (Un)Pauses a layer.
+ *
+ * @param layer The layer that should be (un)paused.
+ * @param pause Should we pause the layer?
+ */
+void LayPause __P((struct layer *layer, int pause));
+
+/**
+ * Update the region to refresh after a layer is unpaused.
+ *
+ * @param layer The layer.
+ * @param xs	The left-end of the region.
+ * @param xe	The right-end of the region.
+ * @param ys	The top-end of the region.
+ * @param ye	The bottom-end of the region.
+ */
+void LayPauseUpdateRegion __P((struct layer *layer, int xs, int xe, int ys, int ye));
+
+/**
+ * Free any internal memory for the layer.
+ *
+ * @param layer The layer.
+ */
+void LayerCleanupMemory __P((struct layer *layer));
+