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some incomplete xinerama stuff
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kojima
241
src/xinerama.c
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241
src/xinerama.c
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/*
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* Window Maker window manager
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*
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* Copyright (c) 1997-2001 Alfredo K. Kojima
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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 2 of the License, or
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* (at your option) 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; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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#include "wconfig.h"
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#ifdef XINERAMA
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#include "xinerama.h"
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#include "screen.h"
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#include "window.h"
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#include "framewin.h"
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#include "wcore.h"
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#include <X11/extensions/Xinerama.h>
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void wInitXinerama(WScreen *scr)
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{
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scr->xine_screens = XineramaQueryScreens(dpy, &scr->xine_count);
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scr->xine_primary_head = 0;
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}
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/*
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* intersect_rectangles-
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* Calculate the rectangle that results from the intersection of
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* 2 rectangles.
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*
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* Returns:
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* 0 if the rectangles do not intersect, 1 otherwise.
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*/
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typedef struct {
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int x1, y1, x2, y2;
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} _Rectangle;
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int intersect_rectangles(_Rectangle *rect1,
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_Rectangle *rect2,
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_Rectangle *result)
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{
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if (rect1->x1 < rect2->x1)
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result->x1 = rect2->x1;
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else
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result->x1 = rect1->x1;
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if (rect1->x2 > rect2->x2)
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result->x2 = rect2->x2;
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else
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result->x2 = rect1->x2;
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if (rect1->y1 < rect2->y1)
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result->y1 = rect2->y1;
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else
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result->y1 = rect1->y1;
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if (rect1->y2 > rect2->y2)
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result->y2 = rect2->y2;
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else
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result->y2 = rect1->y2;
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if (result->x2 < result->x1)
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return 0;
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if (result->y2 < result->y1)
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return 0;
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return 1;
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}
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static int intersectArea(int x1, int y1, int w1, int h1,
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int x2, int y2, int w2, int h2)
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{
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_Rectangle rect1, rect2, result;
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rect1.x1 = x1;
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rect1.y1 = y1;
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rect1.x2 = x1+w1;
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rect1.x2 = y1+w1;
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rect2.x1 = x2;
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rect2.y1 = y2;
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rect2.x2 = x2+w2;
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rect2.x2 = y2+w2;
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if (intersect_rectangles(&rect1, &rect2, &result))
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return (result.x2-result.x1)*(result.y2-result.y1);
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else
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return 0;
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}
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/* get the head that covers most of the rectangle */
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int wGetHeadForRect(WScreen *scr, WMRect rect)
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{
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int best;
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unsigned long area;
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int i;
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int rx = rect.pos.x;
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int ry = rect.pos.y;
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int rw = rect.size.width;
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int rh = rect.size.height;
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best = -1;
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area = 0;
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for (i = 0; i < scr->xine_count; i++) {
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unsigned long a;
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a = intersectArea(rx, ry, rw, rh,
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scr->xine_screens[i].x_org,
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scr->xine_screens[i].y_org,
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scr->xine_screens[i].width,
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scr->xine_screens[i].height);
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if (a > area) {
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area = a;
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best = i;
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}
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}
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return best;
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}
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int wGetHeadForWindow(WWindow *wwin)
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{
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WMRect rect;
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rect.pos.x = wwin->frame_x;
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rect.pos.y = wwin->frame_y;
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rect.size.width = wwin->frame->core->width;
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rect.size.height = wwin->frame->core->height;
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return wGetHeadForRect(wwin->screen_ptr, rect);
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}
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int wGetHeadForPoint(WScreen *scr, WMPoint point)
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{
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int i;
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for (i = 0; i < scr->xine_count; i++) {
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int yy, xx;
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xx = scr->xine_screens[i].x_org + scr->xine_screens[i].width;
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yy = scr->xine_screens[i].y_org + scr->xine_screens[i].height;
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if (point.x >= scr->xine_screens[i].x_org &&
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point.y >= scr->xine_screens[i].y_org &&
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point.x < xx && point.y < yy) {
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return i;
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}
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}
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return scr->xine_primary_head;
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}
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int wGetHeadForPointerLocation(WScreen *scr)
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{
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WMPoint point;
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Window bla;
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int ble;
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unsigned int blo;
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if (!XQueryPointer(dpy, scr->root_win, &bla, &bla,
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&point.x, &point.y,
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&ble, &ble,
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&blo))
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return scr->xine_primary_head;
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return wGetHeadForPoint(scr, point);
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}
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/* get the dimensions of the head */
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WMRect wGetRectForHead(WScreen *scr, int head)
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{
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WMRect rect;
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if (head < scr->xine_count) {
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rect.pos.x = scr->xine_screens[head].x_org;
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rect.pos.y = scr->xine_screens[head].y_org;
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rect.size.width = scr->xine_screens[head].width;
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rect.size.height = scr->xine_screens[head].height;
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return rect;
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} else {
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rect.pos.x = 0;
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rect.pos.y = 0;
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rect.size.width = scr->scr_width;
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rect.size.height = scr->scr_height;
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return rect;
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}
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}
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WMRect wGetUsableRectForHead(WScreen *scr, int head)
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{
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if (head < scr->xine_count) {
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rect.pos.x = scr->xine_screens[head].x_org;
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rect.pos.y = scr->xine_screens[head].y_org;
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rect.size.width = scr->xine_screens[head].width;
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rect.size.height = scr->xine_screens[head].height;
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return rect;
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} else {
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rect.pos.x = 0;
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rect.pos.y = 0;
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rect.size.width = scr->scr_width;
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rect.size.height = scr->scr_height;
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return rect;
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}
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}
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#endif
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47
src/xinerama.h
Normal file
47
src/xinerama.h
Normal file
@@ -0,0 +1,47 @@
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/*
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* Window Maker window manager
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*
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* Copyright (c) 1997-2001 Alfredo K. Kojima
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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 2 of the License, or
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* (at your option) 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; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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* USA.
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*/
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#ifndef _XINERAMA_H_
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#define _XINERAMA_H_
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#include "screen.h"
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#include "window.h"
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#include <WINGs/WINGs.h>
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void wInitXinerama(WScreen *scr);
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int wGetHeadForRect(WScreen *scr, WMRect rect);
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int wGetHeadForWindow(WWindow *wwin);
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int wGetHeadForPoint(WScreen *scr, WMPoint point);
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int wGetHeadForPointerLocation(WScreen *scr);
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WMRect wGetRectForHead(WScreen *scr, int head);
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WMRect wGetUsableRectForHead(WScreen *scr, int head);
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#endif
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