client/X11/xf_monitor.c

   1 /**
   2  * FreeRDP: A Remote Desktop Protocol Client
   3  * X11 Monitor Handling
   4  *
   5  * Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *     http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  */
  19
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <X11/Xlib.h>
  24 #include <X11/Xutil.h>
  25
  26 #ifdef WITH_XINERAMA
  27 #include <X11/extensions/Xinerama.h>
  28 #endif
  29
  30 #include "xf_monitor.h"
  31
  32 /* See MSDN Section on Multiple Display Monitors: http://msdn.microsoft.com/en-us/library/dd145071 */
  33
  34 boolean xf_detect_monitors(xfInfo* xfi, rdpSettings* settings)
  35 {
  36         int i;
  37         VIRTUAL_SCREEN* vscreen;
  38
  39 #ifdef WITH_XINERAMA
  40         int ignored, ignored2;
  41         XineramaScreenInfo* screen_info = NULL;
  42 #endif
  43
  44         vscreen = &xfi->vscreen;
  45
  46         if (xf_GetWorkArea(xfi) != true)
  47         {
  48                 xfi->workArea.x = 0;
  49                 xfi->workArea.y = 0;
  50                 xfi->workArea.width = WidthOfScreen(xfi->screen);
  51                 xfi->workArea.height = HeightOfScreen(xfi->screen);
  52         }
  53
  54         if (settings->fullscreen)
  55         {
  56                 settings->width = WidthOfScreen(xfi->screen);
  57                 settings->height = HeightOfScreen(xfi->screen);
  58         }
  59         else if (settings->workarea)
  60         {
  61                 settings->width = xfi->workArea.width;
  62                 settings->height = xfi->workArea.height;
  63         }
  64         else if (settings->percent_screen)
  65         {
  66                 settings->width = (xfi->workArea.width * settings->percent_screen) / 100;
  67                 settings->height = (xfi->workArea.height * settings->percent_screen) / 100;
  68         }
  69
  70         if (settings->fullscreen != true && settings->workarea != true)
  71                 return true;
  72
  73 #ifdef WITH_XINERAMA
  74         if (XineramaQueryExtension(xfi->display, &ignored, &ignored2))
  75         {
  76                 if (XineramaIsActive(xfi->display))
  77                 {
  78                         screen_info = XineramaQueryScreens(xfi->display, &vscreen->nmonitors);
  79
  80                         if (vscreen->nmonitors > 16)
  81                                 vscreen->nmonitors = 0;
  82
  83                         vscreen->monitors = xzalloc(sizeof(MONITOR_INFO) * vscreen->nmonitors);
  84
  85                         if (vscreen->nmonitors)
  86                         {
  87                                 for (i = 0; i < vscreen->nmonitors; i++)
  88                                 {
  89                                         vscreen->monitors[i].area.left = screen_info[i].x_org;
  90                                         vscreen->monitors[i].area.top = screen_info[i].y_org;
  91                                         vscreen->monitors[i].area.right = screen_info[i].x_org + screen_info[i].width - 1;
  92                                         vscreen->monitors[i].area.bottom = screen_info[i].y_org + screen_info[i].height - 1;
  93
  94                                         if ((screen_info[i].x_org == 0) && (screen_info[i].y_org == 0))
  95                                                 vscreen->monitors[i].primary = true;
  96                                 }
  97                         }
  98
  99                         XFree(screen_info);
 100                 }
 101         }
 102 #endif
 103
 104         settings->num_monitors = vscreen->nmonitors;
 105
 106         for (i = 0; i < vscreen->nmonitors; i++)
 107         {
 108                 settings->monitors[i].x = vscreen->monitors[i].area.left;
 109                 settings->monitors[i].y = vscreen->monitors[i].area.top;
 110                 settings->monitors[i].width = vscreen->monitors[i].area.right - vscreen->monitors[i].area.left + 1;
 111                 settings->monitors[i].height = vscreen->monitors[i].area.bottom - vscreen->monitors[i].area.top + 1;
 112                 settings->monitors[i].is_primary = vscreen->monitors[i].primary;
 113
 114                 vscreen->area.left = MIN(vscreen->monitors[i].area.left, vscreen->area.left);
 115                 vscreen->area.right = MAX(vscreen->monitors[i].area.right, vscreen->area.right);
 116                 vscreen->area.top = MIN(vscreen->monitors[i].area.top, vscreen->area.top);
 117                 vscreen->area.bottom = MAX(vscreen->monitors[i].area.bottom, vscreen->area.bottom);
 118         }
 119
 120         if (settings->num_monitors)
 121         {
 122                 settings->width = vscreen->area.right - vscreen->area.left + 1;
 123                 settings->height = vscreen->area.bottom - vscreen->area.top + 1;
 124         }
 125
 126         return true;
 127 }