1 /*
2 * Xinerama support
3 *
4 * Copyright 2006 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
19 */
20
21 #include "config.h"
22 #include "wine/port.h"
23
24 #include <stdarg.h>
25 #include <stdlib.h>
26 #include <X11/Xlib.h>
27 #ifdef HAVE_X11_EXTENSIONS_XINERAMA_H
28 #include <X11/extensions/Xinerama.h>
29 #endif
30 #include "wine/library.h"
31 #include "x11drv.h"
32 #include "wine/debug.h"
33
34 WINE_DEFAULT_DEBUG_CHANNEL(x11drv);
35
36 static MONITORINFOEXW default_monitor =
37 {
38 sizeof(default_monitor), /* cbSize */
39 { 0, 0, 0, 0 }, /* rcMonitor */
40 { 0, 0, 0, 0 }, /* rcWork */
41 MONITORINFOF_PRIMARY, /* dwFlags */
42 { '\\','\\','.','\\','D','I','S','P','L','A','Y','1',0 } /* szDevice */
43 };
44
45 static MONITORINFOEXW *monitors;
46 static int nb_monitors;
47
48 static inline MONITORINFOEXW *get_primary(void)
49 {
50 /* default to 0 if specified primary is invalid */
51 int idx = primary_monitor;
52 if (idx >= nb_monitors) idx = 0;
53 return &monitors[idx];
54 }
55
56 static inline HMONITOR index_to_monitor( int index )
57 {
58 return (HMONITOR)(UINT_PTR)(index + 1);
59 }
60
61 static inline int monitor_to_index( HMONITOR handle )
62 {
63 UINT_PTR index = (UINT_PTR)handle;
64 if (index < 1 || index > nb_monitors) return -1;
65 return index - 1;
66 }
67
68 static void query_work_area( RECT *rc_work )
69 {
70 Atom type;
71 int format;
72 unsigned long count, remaining;
73 long *work_area;
74
75 if (!XGetWindowProperty( gdi_display, DefaultRootWindow(gdi_display), x11drv_atom(_NET_WORKAREA), 0,
76 ~0, False, XA_CARDINAL, &type, &format, &count,
77 &remaining, (unsigned char **)&work_area ))
78 {
79 if (type == XA_CARDINAL && format == 32 && count >= 4)
80 {
81 SetRect( rc_work, work_area[0], work_area[1],
82 work_area[0] + work_area[2], work_area[1] + work_area[3] );
83 }
84 XFree( work_area );
85 }
86 }
87
88 #ifdef SONAME_LIBXINERAMA
89
90 #define MAKE_FUNCPTR(f) static typeof(f) * p##f
91
92 MAKE_FUNCPTR(XineramaQueryExtension);
93 MAKE_FUNCPTR(XineramaQueryScreens);
94
95 static void load_xinerama(void)
96 {
97 void *handle;
98
99 if (!(handle = wine_dlopen(SONAME_LIBXINERAMA, RTLD_NOW, NULL, 0)))
100 {
101 WARN( "failed to open %s\n", SONAME_LIBXINERAMA );
102 return;
103 }
104 pXineramaQueryExtension = wine_dlsym( handle, "XineramaQueryExtension", NULL, 0 );
105 if (!pXineramaQueryExtension) WARN( "XineramaQueryScreens not found\n" );
106 pXineramaQueryScreens = wine_dlsym( handle, "XineramaQueryScreens", NULL, 0 );
107 if (!pXineramaQueryScreens) WARN( "XineramaQueryScreens not found\n" );
108 }
109
110 static int query_screens(void)
111 {
112 int i, count, event_base, error_base;
113 XineramaScreenInfo *screens;
114 RECT rc_work = {0, 0, 0, 0};
115
116 if (!monitors) /* first time around */
117 load_xinerama();
118
119 query_work_area( &rc_work );
120
121 if (!pXineramaQueryExtension || !pXineramaQueryScreens ||
122 !pXineramaQueryExtension( gdi_display, &event_base, &error_base ) ||
123 !(screens = pXineramaQueryScreens( gdi_display, &count ))) return 0;
124
125 if (monitors != &default_monitor) HeapFree( GetProcessHeap(), 0, monitors );
126 if ((monitors = HeapAlloc( GetProcessHeap(), 0, count * sizeof(*monitors) )))
127 {
128 nb_monitors = count;
129 for (i = 0; i < nb_monitors; i++)
130 {
131 monitors[i].cbSize = sizeof( monitors[i] );
132 monitors[i].rcMonitor.left = screens[i].x_org;
133 monitors[i].rcMonitor.top = screens[i].y_org;
134 monitors[i].rcMonitor.right = screens[i].x_org + screens[i].width;
135 monitors[i].rcMonitor.bottom = screens[i].y_org + screens[i].height;
136 monitors[i].dwFlags = 0;
137 if (!IntersectRect( &monitors[i].rcWork, &rc_work, &monitors[i].rcMonitor ))
138 monitors[i].rcWork = monitors[i].rcMonitor;
139 /* FIXME: using the same device name for all monitors for now */
140 lstrcpyW( monitors[i].szDevice, default_monitor.szDevice );
141 }
142
143 get_primary()->dwFlags |= MONITORINFOF_PRIMARY;
144 }
145 else count = 0;
146
147 XFree( screens );
148 return count;
149 }
150
151 #else /* SONAME_LIBXINERAMA */
152
153 static inline int query_screens(void)
154 {
155 return 0;
156 }
157
158 #endif /* SONAME_LIBXINERAMA */
159
160 void xinerama_init( unsigned int width, unsigned int height )
161 {
162 MONITORINFOEXW *primary;
163 int i;
164 RECT rect;
165
166 wine_tsx11_lock();
167
168 SetRect( &rect, 0, 0, width, height );
169
170 if (root_window != DefaultRootWindow( gdi_display ) || !query_screens())
171 {
172 default_monitor.rcWork = default_monitor.rcMonitor = rect;
173 if (root_window == DefaultRootWindow( gdi_display ))
174 query_work_area( &default_monitor.rcWork );
175 nb_monitors = 1;
176 monitors = &default_monitor;
177 }
178
179 primary = get_primary();
180
181 /* coordinates (0,0) have to point to the primary monitor origin */
182 OffsetRect( &rect, -primary->rcMonitor.left, -primary->rcMonitor.top );
183 for (i = 0; i < nb_monitors; i++)
184 {
185 OffsetRect( &monitors[i].rcMonitor, rect.left, rect.top );
186 OffsetRect( &monitors[i].rcWork, rect.left, rect.top );
187 TRACE( "monitor %p: %s work %s%s\n",
188 index_to_monitor(i), wine_dbgstr_rect(&monitors[i].rcMonitor),
189 wine_dbgstr_rect(&monitors[i].rcWork),
190 (monitors[i].dwFlags & MONITORINFOF_PRIMARY) ? " (primary)" : "" );
191 }
192
193 virtual_screen_rect = rect;
194 screen_width = primary->rcMonitor.right - primary->rcMonitor.left;
195 screen_height = primary->rcMonitor.bottom - primary->rcMonitor.top;
196 TRACE( "virtual size: %s primary size: %dx%d\n",
197 wine_dbgstr_rect(&rect), screen_width, screen_height );
198
199 wine_tsx11_unlock();
200 ClipCursor( NULL ); /* reset the cursor clip rectangle */
201 }
202
203
204 /***********************************************************************
205 * X11DRV_GetMonitorInfo (X11DRV.@)
206 */
207 BOOL CDECL X11DRV_GetMonitorInfo( HMONITOR handle, LPMONITORINFO info )
208 {
209 int i = monitor_to_index( handle );
210
211 if (i == -1)
212 {
213 SetLastError( ERROR_INVALID_HANDLE );
214 return FALSE;
215 }
216 info->rcMonitor = monitors[i].rcMonitor;
217 info->rcWork = monitors[i].rcWork;
218 info->dwFlags = monitors[i].dwFlags;
219 if (info->cbSize >= sizeof(MONITORINFOEXW))
220 lstrcpyW( ((MONITORINFOEXW *)info)->szDevice, monitors[i].szDevice );
221 return TRUE;
222 }
223
224
225 /***********************************************************************
226 * X11DRV_EnumDisplayMonitors (X11DRV.@)
227 */
228 BOOL CDECL X11DRV_EnumDisplayMonitors( HDC hdc, LPRECT rect, MONITORENUMPROC proc, LPARAM lp )
229 {
230 int i;
231
232 if (hdc)
233 {
234 POINT origin;
235 RECT limit;
236
237 if (!GetDCOrgEx( hdc, &origin )) return FALSE;
238 if (GetClipBox( hdc, &limit ) == ERROR) return FALSE;
239
240 if (rect && !IntersectRect( &limit, &limit, rect )) return TRUE;
241
242 for (i = 0; i < nb_monitors; i++)
243 {
244 RECT monrect = monitors[i].rcMonitor;
245 OffsetRect( &monrect, -origin.x, -origin.y );
246 if (IntersectRect( &monrect, &monrect, &limit ))
247 if (!proc( index_to_monitor(i), hdc, &monrect, lp ))
248 return FALSE;
249 }
250 }
251 else
252 {
253 for (i = 0; i < nb_monitors; i++)
254 {
255 RECT unused;
256 if (!rect || IntersectRect( &unused, &monitors[i].rcMonitor, rect ))
257 if (!proc( index_to_monitor(i), 0, &monitors[i].rcMonitor, lp ))
258 return FALSE;
259 }
260 }
261 return TRUE;
262 }
263
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