summaryrefslogtreecommitdiffstats
path: root/layer.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--layer.h163
1 files changed, 163 insertions, 0 deletions
diff --git a/layer.h b/layer.h
new file mode 100644
index 0000000..d2f5d80
--- /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: %lx\n", (long)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));
+