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/* 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_CANVAS_H
#define SCREEN_CANVAS_H
#define SLICE_UNKN 0
#define SLICE_VERT (1 << 0)
#define SLICE_HORI (1 << 1)
#define SLICE_THIS (1 << 2) /* used in equal test */
#define SLICE_GLOBAL (1 << 3)
struct canvas
{
struct canvas *c_next; /* next canvas on display */
struct display *c_display; /* back pointer to display */
struct canvas *c_slnext; /* next canvas in display slice */
struct canvas *c_slprev; /* prev canvas in display slice */
struct canvas *c_slperp; /* perpendicular slice */
struct canvas *c_slback; /* perpendicular slice back pointer */
int c_slorient; /* our slice orientation */
int c_slweight; /* size ratio */
struct viewport *c_vplist;
struct layer *c_layer; /* layer on this canvas */
struct canvas *c_lnext; /* next canvas that displays layer */
struct layer c_blank; /* bottom layer, always blank */
int c_xoff; /* canvas x offset on display */
int c_yoff; /* canvas y offset on display */
int c_xs;
int c_xe;
int c_ys;
int c_ye;
struct event c_captev; /* caption changed event */
};
struct win; /* forward declaration */
extern void SetCanvasWindow __P((struct canvas *, struct win *));
extern void SetForeCanvas __P((struct display *, struct canvas *));
extern struct canvas *FindCanvas __P((int, int));
extern int MakeDefaultCanvas __P((void));
extern int AddCanvas __P((int));
extern void RemCanvas __P((void));
extern void OneCanvas __P((void));
extern void FreeCanvas __P((struct canvas *));
extern void ResizeCanvas __P((struct canvas *));
extern void RecreateCanvasChain __P((void));
extern void RethinkViewportOffsets __P((struct canvas *));
extern int CountCanvasPerp __P((struct canvas *));
extern void EqualizeCanvas __P((struct canvas *, int));
extern void DupLayoutCv __P((struct canvas *, struct canvas *, int));
extern void PutWindowCv __P((struct canvas *));
#define CV_CALL(cv, cmd) \
{ \
struct display *olddisplay = display; \
struct layer *oldflayer = flayer; \
struct layer *l = cv->c_layer; \
struct canvas *cvlist = l->l_cvlist; \
struct canvas *cvlnext = cv->c_lnext; \
flayer = l; \
l->l_cvlist = cv; \
cv->c_lnext = 0; \
cmd; \
flayer = oldflayer; \
l->l_cvlist = cvlist; \
cv->c_lnext = cvlnext; \
display = olddisplay; \
}
#endif /* SCREEN_CANVAS_H */
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