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a09e091a JB |
1 | /* |
2 | * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina. | |
3 | * | |
4 | * All Rights Reserved. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining | |
7 | * a copy of this software and associated documentation files (the | |
8 | * "Software"), to deal in the Software without restriction, including | |
9 | * without limitation on the rights to use, copy, modify, merge, | |
10 | * publish, distribute, sublicense, and/or sell copies of the Software, | |
11 | * and to permit persons to whom the Software is furnished to do so, | |
12 | * subject to the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial | |
16 | * portions of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
19 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
21 | * NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS | |
22 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
23 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
25 | * SOFTWARE. | |
26 | */ | |
27 | ||
28 | /* | |
29 | * Author: | |
30 | * Rickard E. (Rik) Faith <faith@redhat.com> | |
31 | * | |
32 | */ | |
33 | ||
34 | /** \file | |
35 | * Provides DPMS support and unifies all DPMS and other screen-saver | |
36 | * support in one file. If -dpms is given on the command line, or the | |
37 | * Xdmx server is not compiled with DPMS support, then the DPMS extension | |
38 | * does not work for clients, but DPMS on the backends is still disables | |
39 | * (and restored at Xdmx server shutdown time). | |
40 | */ | |
41 | ||
42 | #ifdef HAVE_DMX_CONFIG_H | |
43 | #include <dmx-config.h> | |
44 | #endif | |
45 | ||
46 | #include "dmx.h" | |
47 | #include "dmxdpms.h" | |
48 | #include "dmxlog.h" | |
49 | #include "dmxsync.h" | |
50 | #ifdef DPMSExtension | |
51 | #include "dpmsproc.h" | |
52 | #endif | |
53 | #include "windowstr.h" /* For screenIsSaved */ | |
54 | #include <X11/extensions/dpms.h> | |
55 | ||
56 | static unsigned long dpmsGeneration = 0; | |
57 | static Bool dpmsSupported = TRUE; | |
58 | ||
59 | static void | |
60 | _dmxDPMSInit(DMXScreenInfo * dmxScreen) | |
61 | { | |
62 | int event_base, error_base; | |
63 | int major, minor; | |
64 | CARD16 level, standby, suspend, off; | |
65 | BOOL state; | |
66 | const char *monitor; | |
67 | ||
68 | if (dpmsGeneration != serverGeneration) { | |
69 | dpmsSupported = TRUE; /* On unless a backend doesn't support it */ | |
70 | dpmsGeneration = serverGeneration; | |
71 | } | |
72 | ||
73 | #ifdef DPMSExtension | |
74 | if (DPMSDisabledSwitch) | |
75 | dpmsSupported = FALSE; /* -dpms turns off */ | |
76 | #endif | |
77 | ||
78 | dmxScreen->dpmsCapable = 0; | |
79 | ||
80 | if (!dmxScreen->beDisplay) { | |
81 | dmxLogOutput(dmxScreen, | |
82 | "Cannot determine if DPMS supported (detached screen)\n"); | |
83 | dpmsSupported = FALSE; | |
84 | return; | |
85 | } | |
86 | ||
87 | if (!DPMSQueryExtension(dmxScreen->beDisplay, &event_base, &error_base)) { | |
88 | dmxLogOutput(dmxScreen, "DPMS not supported\n"); | |
89 | dpmsSupported = FALSE; | |
90 | return; | |
91 | } | |
92 | if (!DPMSGetVersion(dmxScreen->beDisplay, &major, &minor)) { | |
93 | dmxLogOutput(dmxScreen, "DPMS not supported\n"); | |
94 | dpmsSupported = FALSE; | |
95 | return; | |
96 | } | |
97 | if (!DPMSCapable(dmxScreen->beDisplay)) { | |
98 | dmxLogOutput(dmxScreen, "DPMS %d.%d (not DPMS capable)\n", | |
99 | major, minor); | |
100 | dpmsSupported = FALSE; | |
101 | return; | |
102 | } | |
103 | ||
104 | DPMSInfo(dmxScreen->beDisplay, &level, &state); | |
105 | DPMSGetTimeouts(dmxScreen->beDisplay, &standby, &suspend, &off); | |
106 | DPMSSetTimeouts(dmxScreen->beDisplay, 0, 0, 0); | |
107 | DPMSEnable(dmxScreen->beDisplay); | |
108 | DPMSForceLevel(dmxScreen->beDisplay, DPMSModeOn); | |
109 | dmxScreen->dpmsCapable = 1; | |
110 | dmxScreen->dpmsEnabled = ! !state; | |
111 | dmxScreen->dpmsStandby = standby; | |
112 | dmxScreen->dpmsSuspend = suspend; | |
113 | dmxScreen->dpmsOff = off; | |
114 | ||
115 | switch (level) { | |
116 | case DPMSModeOn: | |
117 | monitor = "on"; | |
118 | break; | |
119 | case DPMSModeStandby: | |
120 | monitor = "standby"; | |
121 | break; | |
122 | case DPMSModeSuspend: | |
123 | monitor = "suspend"; | |
124 | break; | |
125 | case DPMSModeOff: | |
126 | monitor = "off"; | |
127 | break; | |
128 | default: | |
129 | monitor = "unknown"; | |
130 | break; | |
131 | } | |
132 | ||
133 | dmxLogOutput(dmxScreen, | |
134 | "DPMS %d.%d (%s, %s, %d %d %d)\n", | |
135 | major, minor, monitor, state ? "enabled" : "disabled", | |
136 | standby, suspend, off); | |
137 | } | |
138 | ||
139 | /** Initialize DPMS support. We save the current settings and turn off | |
140 | * DPMS. The settings are restored in #dmxDPMSTerm. */ | |
141 | void | |
142 | dmxDPMSInit(DMXScreenInfo * dmxScreen) | |
143 | { | |
144 | int interval, preferBlanking, allowExposures; | |
145 | ||
146 | /* Turn off DPMS */ | |
147 | _dmxDPMSInit(dmxScreen); | |
148 | ||
149 | if (!dmxScreen->beDisplay) | |
150 | return; | |
151 | ||
152 | /* Turn off screen saver */ | |
153 | XGetScreenSaver(dmxScreen->beDisplay, &dmxScreen->savedTimeout, &interval, | |
154 | &preferBlanking, &allowExposures); | |
155 | XSetScreenSaver(dmxScreen->beDisplay, 0, interval, | |
156 | preferBlanking, allowExposures); | |
157 | XResetScreenSaver(dmxScreen->beDisplay); | |
158 | dmxSync(dmxScreen, FALSE); | |
159 | } | |
160 | ||
161 | /** Terminate DPMS support on \a dmxScreen. We restore the settings | |
162 | * saved in #dmxDPMSInit. */ | |
163 | void | |
164 | dmxDPMSTerm(DMXScreenInfo * dmxScreen) | |
165 | { | |
166 | int timeout, interval, preferBlanking, allowExposures; | |
167 | ||
168 | if (!dmxScreen->beDisplay) | |
169 | return; | |
170 | ||
171 | XGetScreenSaver(dmxScreen->beDisplay, &timeout, &interval, | |
172 | &preferBlanking, &allowExposures); | |
173 | XSetScreenSaver(dmxScreen->beDisplay, dmxScreen->savedTimeout, interval, | |
174 | preferBlanking, allowExposures); | |
175 | if (dmxScreen->dpmsCapable) { | |
176 | /* Restore saved state */ | |
177 | DPMSForceLevel(dmxScreen->beDisplay, DPMSModeOn); | |
178 | DPMSSetTimeouts(dmxScreen->beDisplay, dmxScreen->dpmsStandby, | |
179 | dmxScreen->dpmsSuspend, dmxScreen->dpmsOff); | |
180 | if (dmxScreen->dpmsEnabled) | |
181 | DPMSEnable(dmxScreen->beDisplay); | |
182 | else | |
183 | DPMSDisable(dmxScreen->beDisplay); | |
184 | } | |
185 | dmxSync(dmxScreen, FALSE); | |
186 | } | |
187 | ||
188 | /** Called when activity is detected so that DPMS power-saving mode can | |
189 | * be deactivated. */ | |
190 | void | |
191 | dmxDPMSWakeup(void) | |
192 | { | |
193 | if (screenIsSaved == SCREEN_SAVER_ON) | |
194 | dixSaveScreens(serverClient, SCREEN_SAVER_OFF, ScreenSaverReset); | |
195 | #ifdef DPMSExtension | |
196 | if (DPMSPowerLevel) | |
197 | DPMSSet(serverClient, 0); | |
198 | #endif | |
199 | } | |
200 | ||
201 | #ifdef DPMSExtension | |
202 | /** This is called on each server generation. It should determine if | |
203 | * DPMS is supported on all of the backends and, if so, return TRUE. */ | |
204 | Bool | |
205 | DPMSSupported(void) | |
206 | { | |
207 | return dpmsSupported; | |
208 | } | |
209 | ||
210 | /** This is used by clients (e.g., xset) to set the DPMS level. */ | |
211 | int | |
212 | DPMSSet(ClientPtr client, int level) | |
213 | { | |
214 | int i; | |
215 | ||
216 | if (!dpmsSupported) | |
217 | return Success; | |
218 | ||
219 | if (level < 0) | |
220 | level = DPMSModeOn; | |
221 | if (level > 3) | |
222 | level = DPMSModeOff; | |
223 | ||
224 | DPMSPowerLevel = level; | |
225 | ||
226 | for (i = 0; i < dmxNumScreens; i++) { | |
227 | DMXScreenInfo *dmxScreen = &dmxScreens[i]; | |
228 | ||
229 | if (dmxScreen->beDisplay) { | |
230 | DPMSForceLevel(dmxScreen->beDisplay, level); | |
231 | dmxSync(dmxScreen, FALSE); | |
232 | } | |
233 | } | |
234 | return Success; | |
235 | } | |
236 | #endif |