129 lines
3.9 KiB
C
129 lines
3.9 KiB
C
/* Copyright (c) 2008, 2009
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* Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
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* Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
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* Micah Cowan (micah@cowan.name)
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* Sadrul Habib Chowdhury (sadrul@users.sourceforge.net)
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* Copyright (c) 1993-2002, 2003, 2005, 2006, 2007
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* Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
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* Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
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* Copyright (c) 1987 Oliver Laumann
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program (see the file COPYING); if not, see
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* https://www.gnu.org/licenses/, or contact Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
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*
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****************************************************************
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*/
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#include "config.h"
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#include "screen.h"
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#include "extern.h"
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#include "viewport.h"
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extern struct display *display;
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int RethinkDisplayViewports() {
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struct canvas *cv;
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struct viewport *vp, *vpn;
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/* free old viewports */
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for (cv = display->d_cvlist; cv; cv = cv->c_next) {
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for (vp = cv->c_vplist; vp; vp = vpn) {
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vp->v_canvas = 0;
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vpn = vp->v_next;
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bzero((char *)vp, sizeof(*vp));
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free(vp);
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}
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cv->c_vplist = 0;
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}
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display->d_vpxmin = -1;
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display->d_vpxmax = -1;
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for (cv = display->d_cvlist; cv; cv = cv->c_next) {
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if ((vp = (struct viewport *)malloc(sizeof *vp)) == 0)
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return -1;
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#ifdef HOLE
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vp->v_canvas = cv;
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vp->v_xs = cv->c_xs;
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vp->v_ys = (cv->c_ys + cv->c_ye) / 2;
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vp->v_xe = cv->c_xe;
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vp->v_ye = cv->c_ye;
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vp->v_xoff = cv->c_xoff;
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vp->v_yoff = cv->c_yoff;
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vp->v_next = cv->c_vplist;
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cv->c_vplist = vp;
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if ((vp = (struct viewport *)malloc(sizeof *vp)) == 0)
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return -1;
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vp->v_canvas = cv;
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vp->v_xs = (cv->c_xs + cv->c_xe) / 2;
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vp->v_ys = (3 * cv->c_ys + cv->c_ye) / 4;
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vp->v_xe = cv->c_xe;
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vp->v_ye = (cv->c_ys + cv->c_ye) / 2 - 1;
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vp->v_xoff = cv->c_xoff;
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vp->v_yoff = cv->c_yoff;
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vp->v_next = cv->c_vplist;
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cv->c_vplist = vp;
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if ((vp = (struct viewport *)malloc(sizeof *vp)) == 0)
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return -1;
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vp->v_canvas = cv;
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vp->v_xs = cv->c_xs;
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vp->v_ys = (3 * cv->c_ys + cv->c_ye) / 4;
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vp->v_xe = (3 * cv->c_xs + cv->c_xe) / 4 - 1;
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vp->v_ye = (cv->c_ys + cv->c_ye) / 2 - 1;
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vp->v_xoff = cv->c_xoff;
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vp->v_yoff = cv->c_yoff;
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vp->v_next = cv->c_vplist;
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cv->c_vplist = vp;
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if ((vp = (struct viewport *)malloc(sizeof *vp)) == 0)
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return -1;
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vp->v_canvas = cv;
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vp->v_xs = cv->c_xs;
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vp->v_ys = cv->c_ys;
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vp->v_xe = cv->c_xe;
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vp->v_ye = (3 * cv->c_ys + cv->c_ye) / 4 - 1;
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vp->v_xoff = cv->c_xoff;
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vp->v_yoff = cv->c_yoff;
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vp->v_next = cv->c_vplist;
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cv->c_vplist = vp;
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#else
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vp->v_canvas = cv;
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vp->v_xs = cv->c_xs;
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vp->v_ys = cv->c_ys;
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vp->v_xe = cv->c_xe;
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vp->v_ye = cv->c_ye;
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vp->v_xoff = cv->c_xoff;
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vp->v_yoff = cv->c_yoff;
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vp->v_next = cv->c_vplist;
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cv->c_vplist = vp;
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#endif
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if (cv->c_xs < display->d_vpxmin || display->d_vpxmin == -1)
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display->d_vpxmin = cv->c_xs;
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if (cv->c_xe > display->d_vpxmax || display->d_vpxmax == -1)
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display->d_vpxmax = cv->c_xe;
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}
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return 0;
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}
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void RethinkViewportOffsets(struct canvas *cv)
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{
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struct viewport *vp;
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for (vp = cv->c_vplist; vp; vp = vp->v_next) {
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vp->v_xoff = cv->c_xoff;
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vp->v_yoff = cv->c_yoff;
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}
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}
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