reverts broken commit which destroyes multimonitor-support. refs https://bugs.archlinux.org/task/50497?project=0 https://github.com/FreeRDP/FreeRDP/issues/2707

0001-Revert-commit-which-destroyes-multi-monitor-support-.patch

From 0a89047e105431ddca682f9ea7ce62d0f869f052 Mon Sep 17 00:00:00 2001
From: RubenKelevra <ruben@vfn-nrw.de>
Date: Wed, 21 Sep 2016 11:05:50 +0200
Subject: [PATCH] fix multi-monitor-support

---
 client/X11/xf_window.c | 139 +++++++++++++++++++------------------------------
 1 file changed, 55 insertions(+), 84 deletions(-)

diff --git a/client/X11/xf_window.c b/client/X11/xf_window.c
index 95c29a0..ee45c23 100644
--- a/client/X11/xf_window.c
+++ b/client/X11/xf_window.c
@@ -36,7 +36,6 @@
 
 #include <winpr/thread.h>
 #include <winpr/crt.h>
-#include <winpr/string.h>
 
 #include <freerdp/rail.h>
 #include <freerdp/log.h>
@@ -141,33 +140,14 @@ void xf_SendClientEvent(xfContext* xfc, Window window, Atom atom, unsigned int n
 void xf_SetWindowFullscreen(xfContext* xfc, xfWindow* window, BOOL fullscreen)
 {
 	int i;
-	rdpSettings* settings = xfc->settings;
-	int startX, startY;
-	UINT32 width = window->width;
-	UINT32 height = window->height;
+	int startX = xfc->instance->settings->DesktopPosX;
+	int startY = xfc->instance->settings->DesktopPosY;
 
 	window->decorations = xfc->decorations;
 	xf_SetWindowDecorations(xfc, window->handle, window->decorations);
 
-	if (fullscreen)
-	{
-		xfc->savedWidth = xfc->window->width;
-		xfc->savedHeight = xfc->window->height;
-		xfc->savedPosX = xfc->window->left;
-		xfc->savedPosY = xfc->window->top;
-		startX = settings->DesktopPosX;
-		startY = settings->DesktopPosY;
-	}
-	else
-	{
-		width = xfc->savedWidth;
-		height = xfc->savedHeight;
-		startX = xfc->savedPosX;
-		startY = xfc->savedPosY;
-	}
-
 	/* Determine the x,y starting location for the fullscreen window */
-	if (fullscreen && xfc->instance->settings->MonitorCount)
+	if (xfc->instance->settings->MonitorCount)
 	{
 		/* Initialize startX and startY with reasonable values */
 		startX = xfc->instance->settings->MonitorDefArray[0].x;
@@ -185,36 +165,27 @@ void xf_SetWindowFullscreen(xfContext* xfc, xfWindow* window, BOOL fullscreen)
 		 */
 		startX = startX + xfc->instance->settings->MonitorLocalShiftX;
 		startY = startY + xfc->instance->settings->MonitorLocalShiftY;
-
-		/* Set monitor bounds */
-		if (settings->MonitorCount > 1)
-		{
-			xf_SendClientEvent(xfc, window->handle, xfc->_NET_WM_FULLSCREEN_MONITORS, 5,
-				xfc->fullscreenMonitors.top,
-				xfc->fullscreenMonitors.bottom,
-				xfc->fullscreenMonitors.left,
-				xfc->fullscreenMonitors.right,
-				1);
-		}
 	}
 
-	xf_ResizeDesktopWindow(xfc, window, width, height);
-
-	if (fullscreen)
-	{
-		/* enter full screen: move the window before adding NET_WM_STATE_FULLSCREEN */
-		XMoveWindow(xfc->display, window->handle, startX, startY);
-	}
+	XMoveResizeWindow(xfc->display, window->handle, startX, startY, window->width, window->height);
 
 	/* Set the fullscreen state */
 	xf_SendClientEvent(xfc, window->handle, xfc->_NET_WM_STATE, 4,
 				fullscreen ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE,
 				xfc->_NET_WM_STATE_FULLSCREEN, 0, 0);
 
-	if (!fullscreen)
+	/* Only send monitor bounds if they are valid */
+	if ((xfc->fullscreenMonitors.top >= 0) &&
+			(xfc->fullscreenMonitors.bottom >= 0) &&
+			(xfc->fullscreenMonitors.left >= 0) &&
+			(xfc->fullscreenMonitors.right >= 0))
 	{
-		/* leave full screen: move the window after removing NET_WM_STATE_FULLSCREEN */
-		XMoveWindow(xfc->display, window->handle, startX, startY);
+		xf_SendClientEvent(xfc, window->handle, xfc->_NET_WM_FULLSCREEN_MONITORS, 5,
+				xfc->fullscreenMonitors.top,
+				xfc->fullscreenMonitors.bottom,
+				xfc->fullscreenMonitors.left,
+				xfc->fullscreenMonitors.right,
+				1);
 	}
 }
 
@@ -239,7 +210,7 @@ BOOL xf_GetWindowProperty(xfContext* xfc, Window window, Atom property, int leng
 
 	if (actual_type == None)
 	{
-		WLog_INFO(TAG, "Property %lu does not exist", property);
+		WLog_ERR(TAG, "Property %lu does not exist", property);
 		return FALSE;
 	}
 
@@ -334,7 +305,7 @@ static void xf_SetWindowPID(xfContext* xfc, Window window, pid_t pid)
 	if (!pid)
 		pid = getpid();
 
-	am_wm_pid = xfc->_NET_WM_PID;
+	am_wm_pid = XInternAtom(xfc->display, "_NET_WM_PID", False);
 
 	XChangeProperty(xfc->display, window, am_wm_pid, XA_CARDINAL,
 				32, PropModeReplace, (BYTE*) &pid, 1);
@@ -343,7 +314,7 @@ static void xf_SetWindowPID(xfContext* xfc, Window window, pid_t pid)
 static const char* get_shm_id()
 {
 	static char shm_id[64];
-	sprintf_s(shm_id, sizeof(shm_id), "/com.freerdp.xfreerdp.tsmf_%016X", GetCurrentProcessId());
+	snprintf(shm_id, sizeof(shm_id), "com.freerdp.xfreerdp.tsmf_%016X", GetCurrentProcessId());
 	return shm_id;
 }
 
@@ -376,7 +347,7 @@ xfWindow* xf_CreateDesktopWindow(xfContext* xfc, char* name, int width, int heig
 			CWBackPixel | CWBackingStore | CWOverrideRedirect | CWColormap |
 			CWBorderPixel | CWWinGravity | CWBitGravity, &xfc->attribs);
 
-	window->shmid = shm_open(get_shm_id(), (O_CREAT | O_RDWR), (S_IREAD | S_IWRITE));
+	window->shmid = shm_open(get_shm_id(), O_CREAT | O_EXCL | O_RDWR, S_IREAD | S_IWRITE);
 
 	if (window->shmid < 0)
 	{
@@ -390,7 +361,7 @@ xfWindow* xf_CreateDesktopWindow(xfContext* xfc, char* name, int width, int heig
 
 		mem = mmap(0, sizeof(window->handle), PROT_READ | PROT_WRITE, MAP_SHARED, window->shmid, 0);
 
-		if (mem == MAP_FAILED)
+		if (mem == ((int*) -1))
 		{
 			DEBUG_X11("xf_CreateDesktopWindow: failed to assign pointer to the memory address - shmat()\n");
 		}
@@ -492,14 +463,11 @@ void xf_ResizeDesktopWindow(xfContext* xfc, xfWindow* window, int width, int hei
 	if (!xfc->settings->SmartSizing)
 #endif
 	{
-		if (!xfc->fullscreen)
-		{
-			size_hints->min_width = size_hints->max_width = width;
-			size_hints->min_height = size_hints->max_height = height;
-			XSetWMNormalHints(xfc->display, window->handle, size_hints);
-		}
+		size_hints->min_width = size_hints->max_width = width;
+		size_hints->min_height = size_hints->max_height = height;
 	}
 
+	XSetWMNormalHints(xfc->display, window->handle, size_hints);
 	XFree(size_hints);
 }
 
@@ -574,20 +542,19 @@ void xf_SetWindowStyle(xfContext* xfc, xfAppWindow* appWindow, UINT32 style, UIN
 	}
 	else
 	{
-		window_type = xfc->_NET_WM_WINDOW_TYPE_NORMAL;
+		XChangeProperty(xfc->display, appWindow->handle, xfc->_NET_WM_WINDOW_TYPE,
+				XA_ATOM, 32, PropModeReplace, (BYTE*) &window_type, 1);
 	}
-
-	XChangeProperty(xfc->display, appWindow->handle, xfc->_NET_WM_WINDOW_TYPE,
-			XA_ATOM, 32, PropModeReplace, (BYTE*) &window_type, 1);
 }
 
 void xf_SetWindowText(xfContext* xfc, xfAppWindow* appWindow, char* name)
 {
+	XStoreName(xfc->display, appWindow->handle, name);
 	const size_t i = strlen(name);
 	XStoreName(xfc->display, appWindow->handle, name);
 
-	Atom wm_Name = xfc->_NET_WM_NAME;
-	Atom utf8Str = xfc->UTF8_STRING;
+	Atom wm_Name = XInternAtom(xfc->display, "_NET_WM_NAME", FALSE);
+	Atom utf8Str = XInternAtom(xfc->display, "UTF8_STRING", FALSE);
 
 	XChangeProperty(xfc->display, appWindow->handle, wm_Name, utf8Str, 8,
 	                PropModeReplace, (unsigned char *)name, i);
@@ -668,7 +635,7 @@ int xf_AppWindowInit(xfContext* xfc, xfAppWindow* appWindow)
 		else
 		{
 			class = malloc(sizeof("RAIL:00000000"));
-			sprintf_s(class, sizeof("RAIL:00000000"), "RAIL:%08X", appWindow->windowId);
+			snprintf(class, sizeof("RAIL:00000000"), "RAIL:%08X", appWindow->windowId);
 			class_hints->res_class = class;
 		}
 
@@ -676,7 +643,8 @@ int xf_AppWindowInit(xfContext* xfc, xfAppWindow* appWindow)
 		XSetClassHint(xfc->display, appWindow->handle, class_hints);
 		XFree(class_hints);
 
-		free(class);
+		if (class)
+			free(class);
 	}
 
 	/* Set the input mode hint for the WM */
@@ -711,8 +679,6 @@ int xf_AppWindowInit(xfContext* xfc, xfAppWindow* appWindow)
 	/* Move doesn't seem to work until window is mapped. */
 	xf_MoveWindow(xfc, appWindow, appWindow->x, appWindow->y, appWindow->width, appWindow->height);
 
-	xf_SetWindowText(xfc, appWindow, appWindow->title);
-
 	return 1;
 }
 
@@ -830,10 +796,9 @@ void xf_ShowWindow(xfContext* xfc, xfAppWindow* appWindow, BYTE state)
 
 		case WINDOW_SHOW_MAXIMIZED:
 			/* Set the window as maximized */
-			xf_SendClientEvent(xfc, appWindow->handle, xfc->_NET_WM_STATE, 4,
-					_NET_WM_STATE_ADD,
-					xfc->_NET_WM_STATE_MAXIMIZED_VERT,
-					xfc->_NET_WM_STATE_MAXIMIZED_HORZ, 0);
+			xf_SendClientEvent(xfc, appWindow->handle, xfc->_NET_WM_STATE, 4, 1,
+					XInternAtom(xfc->display, "_NET_WM_STATE_MAXIMIZED_VERT", False),
+					XInternAtom(xfc->display, "_NET_WM_STATE_MAXIMIZED_HORZ", False), 0);
 			/*
 			 * This is a workaround for the case where the window is maximized locally before the rail server is told to maximize
 			 * the window, this appears to be a race condition where the local window with incomplete data and once the window is
@@ -848,10 +813,9 @@ void xf_ShowWindow(xfContext* xfc, xfAppWindow* appWindow, BYTE state)
 
 		case WINDOW_SHOW:
 			/* Ensure the window is not maximized */
-			xf_SendClientEvent(xfc, appWindow->handle, xfc->_NET_WM_STATE, 4,
-					_NET_WM_STATE_REMOVE,
-					xfc->_NET_WM_STATE_MAXIMIZED_VERT,
-					xfc->_NET_WM_STATE_MAXIMIZED_HORZ, 0);
+			xf_SendClientEvent(xfc, appWindow->handle, xfc->_NET_WM_STATE, 4, 0,
+					XInternAtom(xfc->display, "_NET_WM_STATE_MAXIMIZED_VERT", False),
+					XInternAtom(xfc->display, "_NET_WM_STATE_MAXIMIZED_HORZ", False), 0);
 			/*
 			 * Ignore configure requests until both the Maximized properties have been processed
 			 * to prevent condition where WM overrides size of request due to one or both of these properties
@@ -917,7 +881,6 @@ void xf_SetWindowRects(xfContext* xfc, xfAppWindow* appWindow, RECTANGLE_16* rec
 	if (nrects < 1)
 		return;
 
-#ifdef WITH_XEXT
 	xrects = (XRectangle*) calloc(nrects, sizeof(XRectangle));
 
 	for (i = 0; i < nrects; i++)
@@ -928,12 +891,14 @@ void xf_SetWindowRects(xfContext* xfc, xfAppWindow* appWindow, RECTANGLE_16* rec
 		xrects[i].height = rects[i].bottom - rects[i].top;
 	}
 
+#ifdef WITH_XEXT
 	XShapeCombineRectangles(xfc->display, appWindow->handle, ShapeBounding, 0, 0, xrects, nrects, ShapeSet, 0);
-	free(xrects);
 #endif
 
+	free(xrects);
 }
 
+//void xf_SetWindowVisibilityRects(xfContext* xfc, xfAppWindow* appWindow, RECTANGLE_16* rects, int nrects)
 void xf_SetWindowVisibilityRects(xfContext* xfc, xfAppWindow* appWindow, UINT32 rectsOffsetX, UINT32 rectsOffsetY, RECTANGLE_16* rects, int nrects)
 {
 	int i;
@@ -942,7 +907,6 @@ void xf_SetWindowVisibilityRects(xfContext* xfc, xfAppWindow* appWindow, UINT32
 	if (nrects < 1)
 		return;
 
-#ifdef WITH_XEXT
 	xrects = (XRectangle*) calloc(nrects, sizeof(XRectangle));
 
 	for (i = 0; i < nrects; i++)
@@ -953,23 +917,30 @@ void xf_SetWindowVisibilityRects(xfContext* xfc, xfAppWindow* appWindow, UINT32
 		xrects[i].height = rects[i].bottom - rects[i].top;
 	}
 
-	XShapeCombineRectangles(xfc->display, appWindow->handle, ShapeBounding, rectsOffsetX, rectsOffsetY, xrects, nrects, ShapeSet, 0);
-	free(xrects);
+#ifdef WITH_XEXT
+	XShapeCombineRectangles(xfc->display, appWindow->handle, ShapeBounding, 0, 0, xrects, nrects, ShapeSet, 0);
 #endif
 
+	free(xrects);
 }
 
 void xf_UpdateWindowArea(xfContext* xfc, xfAppWindow* appWindow, int x, int y, int width, int height)
 {
 	int ax, ay;
+	UINT32 translatedWindowOffsetX;
+	UINT32 translatedWindowOffsetY;
+
+	/* Translate the server rail window offset to a local offset */
+	translatedWindowOffsetX = (appWindow->windowOffsetX - appWindow->localWindowOffsetCorrX);
+	translatedWindowOffsetY = (appWindow->windowOffsetY - appWindow->localWindowOffsetCorrY);
 
-	ax = x + appWindow->windowOffsetX;
-	ay = y + appWindow->windowOffsetY;
+	ax = x + translatedWindowOffsetX;
+	ay = y + translatedWindowOffsetY;
 
-	if (ax + width > appWindow->windowOffsetX + appWindow->width)
-		width = (appWindow->windowOffsetX + appWindow->width - 1) - ax;
-	if (ay + height > appWindow->windowOffsetY + appWindow->height)
-		height = (appWindow->windowOffsetY + appWindow->height - 1) - ay;
+	if (ax + width > translatedWindowOffsetX + appWindow->width)
+		width = (translatedWindowOffsetX + appWindow->width - 1) - ax;
+	if (ay + height > translatedWindowOffsetY + appWindow->height)
+		height = (translatedWindowOffsetY + appWindow->height - 1) - ay;
 
 	xf_lock_x11(xfc, TRUE);
 
-- 
2.9.3