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FreeRDP/client/X11/xf_monitor.c

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/**
* FreeRDP: A Remote Desktop Protocol Implementation
* X11 Monitor Handling
*
* Copyright 2011 Marc-Andre Moreau <marcandre.moreau@gmail.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <winpr/crt.h>
#include <freerdp/log.h>
#define TAG CLIENT_TAG("x11")
#ifdef WITH_XINERAMA
#include <X11/extensions/Xinerama.h>
#endif
#include "xf_monitor.h"
/* See MSDN Section on Multiple Display Monitors: http://msdn.microsoft.com/en-us/library/dd145071 */
int xf_list_monitors(xfContext* xfc)
{
#ifdef WITH_XINERAMA
Display* display;
int major, minor;
int i, nmonitors = 0;
XineramaScreenInfo* screen = NULL;
display = XOpenDisplay(NULL);
if (!display)
{
WLog_ERR(TAG, "failed to open X display");
return -1;
}
if (XineramaQueryExtension(display, &major, &minor))
{
if (XineramaIsActive(display))
{
screen = XineramaQueryScreens(display, &nmonitors);
for (i = 0; i < nmonitors; i++)
{
printf(" %s [%d] %dx%d\t+%d+%d\n",
(i == 0) ? "*" : " ", i,
screen[i].width, screen[i].height,
screen[i].x_org, screen[i].y_org);
}
XFree(screen);
}
}
XCloseDisplay(display);
#else
Screen* screen;
Display* display;
display = XOpenDisplay(NULL);
if (!display)
{
WLog_ERR(TAG, "failed to open X display");
return -1;
}
screen = ScreenOfDisplay(display, DefaultScreen(display));
printf(" * [0] %dx%d\t+%d+%d\n", WidthOfScreen(screen), HeightOfScreen(screen), 0, 0);
XCloseDisplay(display);
#endif
return 0;
}
BOOL xf_is_monitor_id_active(xfContext* xfc, UINT32 id)
{
int index;
rdpSettings* settings = xfc->settings;
if (!settings->NumMonitorIds)
return TRUE;
for (index = 0; index < settings->NumMonitorIds; index++)
{
if (settings->MonitorIds[index] == id)
return TRUE;
}
return FALSE;
}
BOOL xf_detect_monitors(xfContext* xfc, UINT32* pMaxWidth, UINT32* pMaxHeight)
{
int i;
int nmonitors = 0;
int primaryMonitorFound = FALSE;
int vX, vY, vWidth, vHeight;
VIRTUAL_SCREEN* vscreen;
rdpSettings* settings = xfc->settings;
int mouse_x, mouse_y, _dummy_i;
Window _dummy_w;
int current_monitor = 0;
#ifdef WITH_XINERAMA
int major, minor;
XineramaScreenInfo* screenInfo = NULL;
#endif
vscreen = &xfc->vscreen;
*pMaxWidth = settings->DesktopWidth;
*pMaxHeight = settings->DesktopHeight;
/* get mouse location */
if (!XQueryPointer(xfc->display, DefaultRootWindow(xfc->display),
&_dummy_w, &_dummy_w, &mouse_x, &mouse_y,
&_dummy_i, &_dummy_i, (void *) &_dummy_i))
mouse_x = mouse_y = 0;
#ifdef WITH_XINERAMA
if (XineramaQueryExtension(xfc->display, &major, &minor))
{
if (XineramaIsActive(xfc->display))
{
screenInfo = XineramaQueryScreens(xfc->display, &vscreen->nmonitors);
if (vscreen->nmonitors > 16)
vscreen->nmonitors = 0;
if (vscreen->nmonitors)
{
for (i = 0; i < vscreen->nmonitors; i++)
{
vscreen->monitors[i].area.left = screenInfo[i].x_org;
vscreen->monitors[i].area.top = screenInfo[i].y_org;
vscreen->monitors[i].area.right = screenInfo[i].x_org + screenInfo[i].width - 1;
vscreen->monitors[i].area.bottom = screenInfo[i].y_org + screenInfo[i].height - 1;
/* Determine which monitor that the mouse cursor is on */
if ((mouse_x >= vscreen->monitors[i].area.left) &&
(mouse_x <= vscreen->monitors[i].area.right) &&
(mouse_y >= vscreen->monitors[i].area.top) &&
(mouse_y <= vscreen->monitors[i].area.bottom))
current_monitor = i;
}
}
XFree(screenInfo);
}
}
#endif
xfc->fullscreenMonitors.top = xfc->fullscreenMonitors.bottom =
xfc->fullscreenMonitors.left = xfc->fullscreenMonitors.right = 0;
/* WORKAROUND: With Remote Application Mode - using NET_WM_WORKAREA
* causes issues with the ability to fully size the window vertically
* (the bottom of the window area is never updated). So, we just set
* the workArea to match the full Screen width/height.
*/
if (settings->RemoteApplicationMode || !xf_GetWorkArea(xfc))
{
xfc->workArea.x = 0;
xfc->workArea.y = 0;
xfc->workArea.width = WidthOfScreen(xfc->screen);
xfc->workArea.height = HeightOfScreen(xfc->screen);
}
if (settings->Fullscreen)
{
*pMaxWidth = WidthOfScreen(xfc->screen);
*pMaxHeight = HeightOfScreen(xfc->screen);
}
else if (settings->Workarea)
{
*pMaxWidth = xfc->workArea.width;
*pMaxHeight = xfc->workArea.height;
}
else if (settings->PercentScreen)
{
*pMaxWidth = (xfc->workArea.width * settings->PercentScreen) / 100;
*pMaxHeight = (xfc->workArea.height * settings->PercentScreen) / 100;
/* If we have specific monitor information then limit the PercentScreen value
* to only affect the current monitor vs. the entire desktop
*/
if (vscreen->nmonitors > 0)
{
*pMaxWidth = ((vscreen->monitors[current_monitor].area.right - vscreen->monitors[current_monitor].area.left + 1) * settings->PercentScreen) / 100;
*pMaxHeight = ((vscreen->monitors[current_monitor].area.bottom - vscreen->monitors[current_monitor].area.top + 1) * settings->PercentScreen) / 100;
}
}
if (!settings->Fullscreen && !settings->Workarea && !settings->UseMultimon)
return TRUE;
/* If single monitor fullscreen OR workarea without remote app */
if ((settings->Fullscreen && !settings->UseMultimon && !settings->SpanMonitors) ||
(settings->Workarea && !settings->RemoteApplicationMode))
{
/* If no monitors were specified on the command-line then set the current monitor as active */
if (!settings->NumMonitorIds)
{
settings->MonitorIds[0] = current_monitor;
}
/* Always sets number of monitors from command-line to just 1.
* If the monitor is invalid then we will default back to current monitor
* later as a fallback. So, there is no need to validate command-line entry here.
*/
settings->NumMonitorIds = 1;
}
/* Create array of all active monitors by taking into account monitors requested on the command-line */
for (i = 0; i < vscreen->nmonitors; i++)
{
if (!xf_is_monitor_id_active(xfc, i))
continue;
settings->MonitorDefArray[nmonitors].x = vscreen->monitors[i].area.left;
settings->MonitorDefArray[nmonitors].y = vscreen->monitors[i].area.top;
settings->MonitorDefArray[nmonitors].width = MIN(vscreen->monitors[i].area.right - vscreen->monitors[i].area.left + 1, *pMaxWidth);
settings->MonitorDefArray[nmonitors].height = MIN(vscreen->monitors[i].area.bottom - vscreen->monitors[i].area.top + 1, *pMaxHeight);
settings->MonitorDefArray[nmonitors].orig_screen = i;
nmonitors++;
}
/* If no monitor is active(bogus command-line monitor specification) - then lets try to fallback to go fullscreen on the current monitor only */
if (nmonitors == 0 && vscreen->nmonitors > 0)
{
settings->MonitorDefArray[0].x = vscreen->monitors[current_monitor].area.left;
settings->MonitorDefArray[0].y = vscreen->monitors[current_monitor].area.top;
settings->MonitorDefArray[0].width = MIN(vscreen->monitors[current_monitor].area.right - vscreen->monitors[current_monitor].area.left + 1, *pMaxWidth);
settings->MonitorDefArray[0].height = MIN(vscreen->monitors[current_monitor].area.bottom - vscreen->monitors[current_monitor].area.top + 1, *pMaxHeight);
settings->MonitorDefArray[0].orig_screen = current_monitor;
nmonitors = 1;
}
settings->MonitorCount = nmonitors;
/* If we have specific monitor information */
if (settings->MonitorCount)
{
/* Initialize bounding rectangle for all monitors */
vWidth = settings->MonitorDefArray[0].width;
vHeight = settings->MonitorDefArray[0].height;
vX = settings->MonitorDefArray[0].x;
vY = settings->MonitorDefArray[0].y;
xfc->fullscreenMonitors.top = xfc->fullscreenMonitors.bottom =
xfc->fullscreenMonitors.left = xfc->fullscreenMonitors.right = settings->MonitorDefArray[0].orig_screen;
/* Calculate bounding rectangle around all monitors to be used AND
* also set the Xinerama indices which define left/top/right/bottom monitors.
*/
for (i = 1; i < settings->MonitorCount; i++)
{
/* does the same as gdk_rectangle_union */
int destX = MIN(vX, settings->MonitorDefArray[i].x);
int destY = MIN(vY, settings->MonitorDefArray[i].y);
int destWidth = MAX(vX + vWidth, settings->MonitorDefArray[i].x + settings->MonitorDefArray[i].width) - destX;
int destHeight = MAX(vY + vHeight, settings->MonitorDefArray[i].y + settings->MonitorDefArray[i].height) - destY;
if (vX != destX)
xfc->fullscreenMonitors.left = settings->MonitorDefArray[i].orig_screen;
if (vY != destY)
xfc->fullscreenMonitors.top = settings->MonitorDefArray[i].orig_screen;
if (vWidth != destWidth)
xfc->fullscreenMonitors.right = settings->MonitorDefArray[i].orig_screen;
if (vHeight != destHeight)
xfc->fullscreenMonitors.bottom = settings->MonitorDefArray[i].orig_screen;
vX = destX;
vY = destY;
vWidth = destWidth;
vHeight = destHeight;
}
settings->DesktopPosX = vX;
settings->DesktopPosY = vY;
vscreen->area.left = 0;
vscreen->area.right = vWidth - 1;
vscreen->area.top = 0;
vscreen->area.bottom = vHeight - 1;
if (settings->Workarea)
{
vscreen->area.top = xfc->workArea.y;
vscreen->area.bottom = (vHeight - (vHeight - (xfc->workArea.height + xfc->workArea.y))) - 1;
}
/* If there are multiple monitors and we have not selected a primary */
if (!primaryMonitorFound)
{
/* First lets try to see if there is a monitor with a 0,0 coordinate */
for (i=0; i<settings->MonitorCount; i++)
{
if (!primaryMonitorFound && settings->MonitorDefArray[i].x == 0 && settings->MonitorDefArray[i].y == 0)
{
settings->MonitorDefArray[i].is_primary = TRUE;
settings->MonitorLocalShiftX = settings->MonitorDefArray[i].x;
settings->MonitorLocalShiftY = settings->MonitorDefArray[i].y;
primaryMonitorFound = TRUE;
}
}
/* If we still do not have a primary monitor then just arbitrarily choose first monitor */
if (!primaryMonitorFound)
{
settings->MonitorDefArray[0].is_primary = TRUE;
settings->MonitorLocalShiftX = settings->MonitorDefArray[0].x;
settings->MonitorLocalShiftY = settings->MonitorDefArray[0].y;
primaryMonitorFound = TRUE;
}
}
/* Subtract monitor shift from monitor variables for server-side use.
* We maintain monitor shift value as Window requires the primary monitor to have a coordinate of 0,0
* In some X configurations, no monitor may have a coordinate of 0,0. This can also be happen if the user
* requests specific monitors from the command-line as well. So, we make sure to translate our primary monitor's
* upper-left corner to 0,0 on the server.
*/
for (i=0; i < settings->MonitorCount; i++)
{
settings->MonitorDefArray[i].x = settings->MonitorDefArray[i].x - settings->MonitorLocalShiftX;
settings->MonitorDefArray[i].y = settings->MonitorDefArray[i].y - settings->MonitorLocalShiftY;
}
/* Set the desktop width and height according to the bounding rectangle around the active monitors */
*pMaxWidth = vscreen->area.right - vscreen->area.left + 1;
*pMaxHeight = vscreen->area.bottom - vscreen->area.top + 1;
}
return TRUE;
}
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