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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
* http://www.gnu.org/licenses/, or contact Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02111-1301 USA
*
****************************************************************
*/
#include "viewport.h"
#include "screen.h"
int RethinkDisplayViewports(void) {
Viewport *viewport, *viewport_next;
/* free old viewports */
for (Canvas *canvas = display->d_cvlist; canvas; canvas = canvas->c_next) {
for (viewport = canvas->c_vplist; viewport; viewport = viewport_next) {
viewport_next = viewport->v_next;
memset((char *)viewport, 0, sizeof(Viewport));
free(viewport);
}
canvas->c_vplist = NULL;
}
display->d_vpxmin = -1;
display->d_vpxmax = -1;
for (Canvas *canvas = display->d_cvlist; canvas; canvas = canvas->c_next) {
if ((viewport = malloc(sizeof(Viewport))) == NULL) {
return -1;
}
viewport->v_canvas = canvas;
viewport->v_xs = canvas->c_xs;
viewport->v_ys = canvas->c_ys;
viewport->v_xe = canvas->c_xe;
viewport->v_ye = canvas->c_ye;
viewport->v_xoff = canvas->c_xoff;
viewport->v_yoff = canvas->c_yoff;
viewport->v_next = canvas->c_vplist;
canvas->c_vplist = viewport;
if (canvas->c_xs < display->d_vpxmin || display->d_vpxmin == -1) {
display->d_vpxmin = canvas->c_xs;
}
if (canvas->c_xe > display->d_vpxmax || display->d_vpxmax == -1) {
display->d_vpxmax = canvas->c_xe;
}
}
return 0;
}
void RethinkViewportOffsets(Canvas *canvas) {
for (Viewport *viewport = canvas->c_vplist; viewport; viewport = viewport->v_next) {
viewport->v_xoff = canvas->c_xoff;
viewport->v_yoff = canvas->c_yoff;
}
}
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