mirror of
https://github.com/libretro/RetroArch.git
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135 lines
3.4 KiB
C
135 lines
3.4 KiB
C
/* RetroArch - A frontend for libretro.
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* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
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* Copyright (C) 2011-2017 - Daniel De Matteis
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*
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* RetroArch is free software: you can redistribute it and/or modify it under the terms
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* of the GNU General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the 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 along with RetroArch.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <string.h>
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#ifdef HAVE_CONFIG_H
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#include "../../config.h"
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#endif
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#include <retro_miscellaneous.h>
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#ifdef HAVE_XINERAMA
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#include <X11/extensions/Xinerama.h>
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#include "xinerama_common.h"
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#include "../../verbosity.h"
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static XineramaScreenInfo *xinerama_query_screens(Display *dpy, int *num_screens)
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{
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int major, minor;
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if (!XineramaQueryExtension(dpy, &major, &minor))
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return NULL;
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XineramaQueryVersion(dpy, &major, &minor);
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RARCH_LOG("[XINERAMA]: Xinerama version: %d.%d.\n", major, minor);
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if (XineramaIsActive(dpy))
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return XineramaQueryScreens(dpy, num_screens);
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return NULL;
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}
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bool xinerama_get_coord(Display *dpy, int screen,
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int *x, int *y, unsigned *w, unsigned *h)
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{
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int i, num_screens = 0;
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XineramaScreenInfo *info = xinerama_query_screens(dpy, &num_screens);
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RARCH_LOG("[XINERAMA]: Xinerama screens: %d.\n", num_screens);
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for (i = 0; i < num_screens; i++)
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{
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if (info[i].screen_number != screen)
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continue;
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*x = info[i].x_org;
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*y = info[i].y_org;
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*w = info[i].width;
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*h = info[i].height;
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XFree(info);
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return true;
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}
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XFree(info);
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return false;
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}
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unsigned xinerama_get_monitor(Display *dpy, int x, int y,
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int w, int h)
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{
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int i, num_screens = 0;
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unsigned monitor = 0;
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int largest_area = 0;
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XineramaScreenInfo *info = xinerama_query_screens(dpy, &num_screens);
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RARCH_LOG("[XINERAMA]: Xinerama screens: %d.\n", num_screens);
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for (i = 0; i < num_screens; i++)
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{
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int area;
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int max_lx = MAX(x, info[i].x_org);
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int min_rx = MIN(x + w, info[i].x_org + info[i].width);
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int max_ty = MAX(y, info[i].y_org);
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int min_by = MIN(y + h, info[i].y_org + info[i].height);
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int len_x = min_rx - max_lx;
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int len_y = min_by - max_ty;
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/* The whole window is outside the screen. */
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if (len_x < 0 || len_y < 0)
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continue;
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area = len_x * len_y;
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if (area > largest_area)
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{
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monitor = i;
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largest_area = area;
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}
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}
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XFree(info);
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if (monitor > 0)
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return monitor;
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return 0;
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}
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void xinerama_save_last_used_monitor(Window win)
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{
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XWindowAttributes target;
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Window child;
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int x = 0, y = 0;
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XGetWindowAttributes(g_x11_dpy, g_x11_win, &target);
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XTranslateCoordinates(g_x11_dpy, g_x11_win,
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DefaultRootWindow(g_x11_dpy),
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target.x, target.y, &x, &y, &child);
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g_x11_screen = xinerama_get_monitor(g_x11_dpy, x, y,
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target.width, target.height);
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RARCH_LOG("[XINERAMA]: Saved monitor #%u.\n", g_x11_screen);
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}
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#endif
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