Use gamma_method_spec_t struct to control and iterate through different

 gamma adjustment methods.

8 files changed, 276 insertions, 296 deletions

diff --git a/po/da.po b/po/da.po
index bb1b10e..e7505f1 100644
--- a/po/da.po
+++ b/po/da.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: redshift\n"
 "Report-Msgid-Bugs-To: https://bugs.launchpad.net/redshift\n"
-"POT-Creation-Date: 2010-05-05 23:28+0200\n"
+"POT-Creation-Date: 2010-05-24 18:10+0200\n"
 "PO-Revision-Date: 2010-05-05 22:20+0000\n"
 "Last-Translator: Jon Lund Steffensen <Unknown>\n"
 "Language-Team: Danish <da@li.org>\n"
@@ -17,17 +17,17 @@ msgstr ""
 "X-Launchpad-Export-Date: 2010-05-06 04:09+0000\n"
 "X-Generator: Launchpad (build Unknown)\n"
 
-#: src/redshift.c:172
+#: src/redshift.c:197
 #, c-format
 msgid "Period: Night\n"
 msgstr "Periode: Nat\n"
 
-#: src/redshift.c:179
+#: src/redshift.c:204
 #, c-format
 msgid "Period: Transition (%.2f%% day)\n"
 msgstr "Periode: Overgang (%.2f%% dag)\n"
 
-#: src/redshift.c:183
+#: src/redshift.c:208
 #, c-format
 msgid "Period: Daytime\n"
 msgstr "Periode: Dag\n"
@@ -37,20 +37,20 @@ msgstr "Periode: Dag\n"
 #. DAY is temperature at daytime,
 #. NIGHT is temperature at night
 #. no-wrap
-#: src/redshift.c:198
+#: src/redshift.c:223
 #, c-format
 msgid "Usage: %s -l LAT:LON -t DAY:NIGHT [OPTIONS...]\n"
 msgstr "Brug: %s -l BRED:LÆNG -t DAG:NAT [TILVALG...]\n"
 
 #. TRANSLATORS: help output 2
 #. no-wrap
-#: src/redshift.c:204
+#: src/redshift.c:229
 msgid "Set color temperature of display according to time of day.\n"
 msgstr "Indstil skærmens farvetemperatur ud fra klokkeslæt.\n"
 
 #. TRANSLATORS: help output 3
 #. no-wrap
-#: src/redshift.c:210
+#: src/redshift.c:235
 msgid ""
 "  -h\t\tDisplay this help message\n"
 "  -v\t\tVerbose output\n"
@@ -60,12 +60,13 @@ msgstr ""
 
 #. TRANSLATORS: help output 4
 #. no-wrap
-#: src/redshift.c:216
+#: src/redshift.c:241
 #, fuzzy
 msgid ""
 "  -g R:G:B\tAdditional gamma correction to apply\n"
 "  -l LAT:LON\tYour current location\n"
-"  -m METHOD\tMethod to use to set color temperature (RANDR or VidMode)\n"
+"  -m METHOD\tMethod to use to set color temperature\n"
+"  \t\t(Type `list' to see available methods)\n"
 "  -o\t\tOne shot mode (do not continously adjust color temperature)\n"
 "  -r\t\tDisable temperature transitions\n"
 "  -s SCREEN\tX screen to apply adjustments to\n"
@@ -83,7 +84,7 @@ msgstr ""
 "  -t DAG:NAT\tFarvetemperatur som sættes hhv. dag og nat\n"
 
 #. TRANSLATORS: help output 5
-#: src/redshift.c:230
+#: src/redshift.c:255
 #, c-format
 msgid ""
 "Default values:\n"
@@ -96,102 +97,104 @@ msgstr ""
 "  Dagtemperatur: %uK\n"
 "  Nattemperatur: %uK\n"
 
-#: src/redshift.c:291
+#: src/redshift.c:269
+msgid "Available adjustment methods:\n"
+msgstr ""
+
+#: src/redshift.c:327
 msgid "Malformed gamma argument.\n"
 msgstr "Fejl i gamma-argument.\n"
 
-#: src/redshift.c:293 src/redshift.c:312 src/redshift.c:363 src/redshift.c:375
-#: src/redshift.c:384
+#: src/redshift.c:329 src/redshift.c:348 src/redshift.c:394 src/redshift.c:406
+#: src/redshift.c:415
 msgid "Try `-h' for more information.\n"
 msgstr "Prøv `-h' for mere information.\n"
 
-#: src/redshift.c:310
+#: src/redshift.c:346
 msgid "Malformed location argument.\n"
 msgstr "Fejl i placeringsargument.\n"
 
-#: src/redshift.c:326
-msgid "RANDR method was not enabled at compile time.\n"
-msgstr "RANDR metode blev ikke slået til under kompilering.\n"
-
-#: src/redshift.c:336
-msgid "VidMode method was not enabled at compile time.\n"
-msgstr "VidMode metode blev ikke slået til under kompilering.\n"
-
 #. TRANSLATORS: This refers to the method
 #. used to adjust colors e.g VidMode
-#: src/redshift.c:344
+#: src/redshift.c:375
 #, c-format
 msgid "Unknown method `%s'.\n"
 msgstr "Ukendt metode `%s'.\n"
 
-#: src/redshift.c:361
+#: src/redshift.c:392
 msgid "Malformed temperature argument.\n"
 msgstr "Fejl i temperaturargument.\n"
 
-#: src/redshift.c:383
+#: src/redshift.c:414
 msgid "Latitude and longitude must be set.\n"
 msgstr "Breddegrad og længdegrad skal angives.\n"
 
 #. TRANSLATORS: Append degree symbols if possible.
-#: src/redshift.c:390
+#: src/redshift.c:421
 #, c-format
 msgid "Location: %f, %f\n"
 msgstr "Placering: %f°, %f°\n"
 
-#: src/redshift.c:397
+#: src/redshift.c:428
 #, c-format
 msgid "Latitude must be between %.1f and %.1f.\n"
 msgstr "Breddegrad skal være mellem %.1f° og %.1f°.\n"
 
-#: src/redshift.c:406
+#: src/redshift.c:437
 #, c-format
 msgid "Longitude must be between %.1f and %.1f.\n"
 msgstr "Længdegrad skal være mellem %.1f° og %.1f°.\n"
 
-#: src/redshift.c:414 src/redshift.c:422
+#: src/redshift.c:445 src/redshift.c:453
 #, c-format
 msgid "Temperature must be between %uK and %uK.\n"
 msgstr "Temperatur skal være mellem %uK og %uK.\n"
 
-#: src/redshift.c:432
+#: src/redshift.c:463
 #, c-format
 msgid "Gamma value must be between %.1f and %.1f.\n"
 msgstr "Gamma-værdi skal være mellem %.1f og %.1f.\n"
 
-#: src/redshift.c:438
+#: src/redshift.c:469
 #, c-format
 msgid "Gamma: %.3f, %.3f, %.3f\n"
 msgstr "Gamma: %.3f, %.3f, %.3f\n"
 
-#: src/redshift.c:444
+#: src/redshift.c:475
 #, c-format
 msgid "CRTC can only be selected with the RANDR method.\n"
 msgstr "CRTC kan kun vælges med RANDR metoden.\n"
 
-#: src/redshift.c:457
-msgid "Initialization of RANDR failed.\n"
+#: src/redshift.c:488 src/redshift.c:498
+#, fuzzy, c-format
+msgid "Initialization of %s failed.\n"
 msgstr "Fejl under klargøring af RANDR.\n"
 
-#: src/redshift.c:459
+#: src/redshift.c:500
 msgid "Trying other method...\n"
 msgstr "Prøver anden metode...\n"
 
-#: src/redshift.c:474
-msgid "Initialization of VidMode failed.\n"
-msgstr "Fejl under klargøring af VidMode.\n"
+#: src/redshift.c:509
+msgid "No more methods to try.\n"
+msgstr ""
+
+#: src/redshift.c:519 src/redshift.c:626
+#, fuzzy
+msgid "Unable to read system time.\n"
+msgstr "Kan ikke genskabe CRTC %i\n"
 
 #. TRANSLATORS: Append degree symbol if possible.
-#: src/redshift.c:497
+#: src/redshift.c:528
 #, c-format
 msgid "Solar elevation: %f\n"
 msgstr "Solhøjde: %f°\n"
 
-#: src/redshift.c:504 src/redshift.c:666
+#: src/redshift.c:535 src/redshift.c:693
 #, c-format
 msgid "Color temperature: %uK\n"
 msgstr "Farvetemperatur: %uK\n"
 
-#: src/redshift.c:510 src/redshift.c:675
+#: src/redshift.c:540 src/redshift.c:701
 msgid "Temperature adjustment failed.\n"
 msgstr "Fejl ved justering af temperatur.\n"
 
@@ -245,3 +248,20 @@ msgstr "Fejl ved X forespørgsel: %s\n"
 #: src/gtk-redshift/statusicon.py:61
 msgid "Toggle"
 msgstr "Slå til/fra"
+
+#~ msgid "RANDR method was not enabled at compile time.\n"
+#~ msgstr "RANDR metode blev ikke slået til under kompilering.\n"
+
+#~ msgid "VidMode method was not enabled at compile time.\n"
+#~ msgstr "VidMode metode blev ikke slået til under kompilering.\n"
+
+#, fuzzy
+#~ msgid "WinGDI method was not enabled at compile time.\n"
+#~ msgstr "RANDR metode blev ikke slået til under kompilering.\n"
+
+#~ msgid "Initialization of VidMode failed.\n"
+#~ msgstr "Fejl under klargøring af VidMode.\n"
+
+#, fuzzy
+#~ msgid "Initialization of WinGDI failed.\n"
+#~ msgstr "Fejl under klargøring af RANDR.\n"
diff --git a/po/redshift.pot b/po/redshift.pot
index 6981406..498409b 100644
--- a/po/redshift.pot
+++ b/po/redshift.pot
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: redshift 1.3\n"
 "Report-Msgid-Bugs-To: https://bugs.launchpad.net/redshift\n"
-"POT-Creation-Date: 2010-05-05 23:28+0200\n"
+"POT-Creation-Date: 2010-05-24 18:10+0200\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -16,17 +16,17 @@ msgstr ""
 "Content-Type: text/plain; charset=CHARSET\n"
 "Content-Transfer-Encoding: 8bit\n"
 
-#: src/redshift.c:172
+#: src/redshift.c:197
 #, c-format
 msgid "Period: Night\n"
 msgstr ""
 
-#: src/redshift.c:179
+#: src/redshift.c:204
 #, c-format
 msgid "Period: Transition (%.2f%% day)\n"
 msgstr ""
 
-#: src/redshift.c:183
+#: src/redshift.c:208
 #, c-format
 msgid "Period: Daytime\n"
 msgstr ""
@@ -36,20 +36,20 @@ msgstr ""
 #. DAY is temperature at daytime,
 #. NIGHT is temperature at night
 #. no-wrap
-#: src/redshift.c:198
+#: src/redshift.c:223
 #, c-format
 msgid "Usage: %s -l LAT:LON -t DAY:NIGHT [OPTIONS...]\n"
 msgstr ""
 
 #. TRANSLATORS: help output 2
 #. no-wrap
-#: src/redshift.c:204
+#: src/redshift.c:229
 msgid "Set color temperature of display according to time of day.\n"
 msgstr ""
 
 #. TRANSLATORS: help output 3
 #. no-wrap
-#: src/redshift.c:210
+#: src/redshift.c:235
 msgid ""
 "  -h\t\tDisplay this help message\n"
 "  -v\t\tVerbose output\n"
@@ -57,11 +57,12 @@ msgstr ""
 
 #. TRANSLATORS: help output 4
 #. no-wrap
-#: src/redshift.c:216
+#: src/redshift.c:241
 msgid ""
 "  -g R:G:B\tAdditional gamma correction to apply\n"
 "  -l LAT:LON\tYour current location\n"
-"  -m METHOD\tMethod to use to set color temperature (RANDR or VidMode)\n"
+"  -m METHOD\tMethod to use to set color temperature\n"
+"  \t\t(Type `list' to see available methods)\n"
 "  -o\t\tOne shot mode (do not continously adjust color temperature)\n"
 "  -r\t\tDisable temperature transitions\n"
 "  -s SCREEN\tX screen to apply adjustments to\n"
@@ -70,7 +71,7 @@ msgid ""
 msgstr ""
 
 #. TRANSLATORS: help output 5
-#: src/redshift.c:230
+#: src/redshift.c:255
 #, c-format
 msgid ""
 "Default values:\n"
@@ -79,102 +80,103 @@ msgid ""
 "  Night temperature: %uK\n"
 msgstr ""
 
-#: src/redshift.c:291
+#: src/redshift.c:269
+msgid "Available adjustment methods:\n"
+msgstr ""
+
+#: src/redshift.c:327
 msgid "Malformed gamma argument.\n"
 msgstr ""
 
-#: src/redshift.c:293 src/redshift.c:312 src/redshift.c:363 src/redshift.c:375
-#: src/redshift.c:384
+#: src/redshift.c:329 src/redshift.c:348 src/redshift.c:394 src/redshift.c:406
+#: src/redshift.c:415
 msgid "Try `-h' for more information.\n"
 msgstr ""
 
-#: src/redshift.c:310
+#: src/redshift.c:346
 msgid "Malformed location argument.\n"
 msgstr ""
 
-#: src/redshift.c:326
-msgid "RANDR method was not enabled at compile time.\n"
-msgstr ""
-
-#: src/redshift.c:336
-msgid "VidMode method was not enabled at compile time.\n"
-msgstr ""
-
 #. TRANSLATORS: This refers to the method
 #. used to adjust colors e.g VidMode
-#: src/redshift.c:344
+#: src/redshift.c:375
 #, c-format
 msgid "Unknown method `%s'.\n"
 msgstr ""
 
-#: src/redshift.c:361
+#: src/redshift.c:392
 msgid "Malformed temperature argument.\n"
 msgstr ""
 
-#: src/redshift.c:383
+#: src/redshift.c:414
 msgid "Latitude and longitude must be set.\n"
 msgstr ""
 
 #. TRANSLATORS: Append degree symbols if possible.
-#: src/redshift.c:390
+#: src/redshift.c:421
 #, c-format
 msgid "Location: %f, %f\n"
 msgstr ""
 
-#: src/redshift.c:397
+#: src/redshift.c:428
 #, c-format
 msgid "Latitude must be between %.1f and %.1f.\n"
 msgstr ""
 
-#: src/redshift.c:406
+#: src/redshift.c:437
 #, c-format
 msgid "Longitude must be between %.1f and %.1f.\n"
 msgstr ""
 
-#: src/redshift.c:414 src/redshift.c:422
+#: src/redshift.c:445 src/redshift.c:453
 #, c-format
 msgid "Temperature must be between %uK and %uK.\n"
 msgstr ""
 
-#: src/redshift.c:432
+#: src/redshift.c:463
 #, c-format
 msgid "Gamma value must be between %.1f and %.1f.\n"
 msgstr ""
 
-#: src/redshift.c:438
+#: src/redshift.c:469
 #, c-format
 msgid "Gamma: %.3f, %.3f, %.3f\n"
 msgstr ""
 
-#: src/redshift.c:444
+#: src/redshift.c:475
 #, c-format
 msgid "CRTC can only be selected with the RANDR method.\n"
 msgstr ""
 
-#: src/redshift.c:457
-msgid "Initialization of RANDR failed.\n"
+#: src/redshift.c:488 src/redshift.c:498
+#, c-format
+msgid "Initialization of %s failed.\n"
 msgstr ""
 
-#: src/redshift.c:459
+#: src/redshift.c:500
 msgid "Trying other method...\n"
 msgstr ""
 
-#: src/redshift.c:474
-msgid "Initialization of VidMode failed.\n"
+#: src/redshift.c:509
+msgid "No more methods to try.\n"
+msgstr ""
+
+#: src/redshift.c:519 src/redshift.c:626
+msgid "Unable to read system time.\n"
 msgstr ""
 
 #. TRANSLATORS: Append degree symbol if possible.
-#: src/redshift.c:497
+#: src/redshift.c:528
 #, c-format
 msgid "Solar elevation: %f\n"
 msgstr ""
 
-#: src/redshift.c:504 src/redshift.c:666
+#: src/redshift.c:535 src/redshift.c:693
 #, c-format
 msgid "Color temperature: %uK\n"
 msgstr ""
 
-#: src/redshift.c:510 src/redshift.c:675
+#: src/redshift.c:540 src/redshift.c:701
 msgid "Temperature adjustment failed.\n"
 msgstr ""
 
diff --git a/po/ru.po b/po/ru.po
index dcd4beb..2a75ad3 100644
--- a/po/ru.po
+++ b/po/ru.po
@@ -7,7 +7,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: redshift\n"
 "Report-Msgid-Bugs-To: https://bugs.launchpad.net/redshift\n"
-"POT-Creation-Date: 2010-05-05 23:28+0200\n"
+"POT-Creation-Date: 2010-05-24 18:10+0200\n"
 "PO-Revision-Date: 2010-02-02 09:20+0000\n"
 "Last-Translator: Gregory Petrosyan <gregory.petrosyan@gmail.com>\n"
 "Language-Team: Russian <ru@li.org>\n"
@@ -17,17 +17,17 @@ msgstr ""
 "X-Launchpad-Export-Date: 2010-02-13 05:02+0000\n"
 "X-Generator: Launchpad (build Unknown)\n"
 
-#: src/redshift.c:172
+#: src/redshift.c:197
 #, c-format
 msgid "Period: Night\n"
 msgstr "Период: Ночь\n"
 
-#: src/redshift.c:179
+#: src/redshift.c:204
 #, c-format
 msgid "Period: Transition (%.2f%% day)\n"
 msgstr "Период: Переходный (%.2f%% дневной)\n"
 
-#: src/redshift.c:183
+#: src/redshift.c:208
 #, c-format
 msgid "Period: Daytime\n"
 msgstr "Период: День\n"
@@ -37,20 +37,20 @@ msgstr "Период: День\n"
 #. DAY is temperature at daytime,
 #. NIGHT is temperature at night
 #. no-wrap
-#: src/redshift.c:198
+#: src/redshift.c:223
 #, c-format
 msgid "Usage: %s -l LAT:LON -t DAY:NIGHT [OPTIONS...]\n"
 msgstr "Использование: %s -l ШИР:ДОЛ -t ДЕНЬ:НОЧЬ [ОПЦИИ...]\n"
 
 #. TRANSLATORS: help output 2
 #. no-wrap
-#: src/redshift.c:204
+#: src/redshift.c:229
 msgid "Set color temperature of display according to time of day.\n"
 msgstr "Установить цветовую температуру в соответствии со временем суток.\n"
 
 #. TRANSLATORS: help output 3
 #. no-wrap
-#: src/redshift.c:210
+#: src/redshift.c:235
 msgid ""
 "  -h\t\tDisplay this help message\n"
 "  -v\t\tVerbose output\n"
@@ -60,12 +60,13 @@ msgstr ""
 
 #. TRANSLATORS: help output 4
 #. no-wrap
-#: src/redshift.c:216
+#: src/redshift.c:241
 #, fuzzy
 msgid ""
 "  -g R:G:B\tAdditional gamma correction to apply\n"
 "  -l LAT:LON\tYour current location\n"
-"  -m METHOD\tMethod to use to set color temperature (RANDR or VidMode)\n"
+"  -m METHOD\tMethod to use to set color temperature\n"
+"  \t\t(Type `list' to see available methods)\n"
 "  -o\t\tOne shot mode (do not continously adjust color temperature)\n"
 "  -r\t\tDisable temperature transitions\n"
 "  -s SCREEN\tX screen to apply adjustments to\n"
@@ -81,7 +82,7 @@ msgstr ""
 "  -t ДЕНЬ:НОЧЬ\tЦветовая температура для ночного/дневного времени\n"
 
 #. TRANSLATORS: help output 5
-#: src/redshift.c:230
+#: src/redshift.c:255
 #, c-format
 msgid ""
 "Default values:\n"
@@ -90,102 +91,104 @@ msgid ""
 "  Night temperature: %uK\n"
 msgstr ""
 
-#: src/redshift.c:291
+#: src/redshift.c:269
+msgid "Available adjustment methods:\n"
+msgstr ""
+
+#: src/redshift.c:327
 msgid "Malformed gamma argument.\n"
 msgstr "Некорректная величина гаммы.\n"
 
-#: src/redshift.c:293 src/redshift.c:312 src/redshift.c:363 src/redshift.c:375
-#: src/redshift.c:384
+#: src/redshift.c:329 src/redshift.c:348 src/redshift.c:394 src/redshift.c:406
+#: src/redshift.c:415
 msgid "Try `-h' for more information.\n"
 msgstr "Воспользуйтесь «-h» для получения дополнительной информации.\n"
 
-#: src/redshift.c:310
+#: src/redshift.c:346
 msgid "Malformed location argument.\n"
 msgstr "Некорректное значение местоположения.\n"
 
-#: src/redshift.c:326
-msgid "RANDR method was not enabled at compile time.\n"
-msgstr "Метод RANDR был выключен во время компиляции.\n"
-
-#: src/redshift.c:336
-msgid "VidMode method was not enabled at compile time.\n"
-msgstr "Метод VidMode был выключен во время компиляции.\n"
-
 #. TRANSLATORS: This refers to the method
 #. used to adjust colors e.g VidMode
-#: src/redshift.c:344
+#: src/redshift.c:375
 #, c-format
 msgid "Unknown method `%s'.\n"
 msgstr "Неизвестный метод «%s».\n"
 
-#: src/redshift.c:361
+#: src/redshift.c:392
 msgid "Malformed temperature argument.\n"
 msgstr "Некорректное значение температуры.\n"
 
-#: src/redshift.c:383
+#: src/redshift.c:414
 msgid "Latitude and longitude must be set.\n"
 msgstr "Широта и долгота должны быть указаны.\n"
 
 #. TRANSLATORS: Append degree symbols if possible.
-#: src/redshift.c:390
+#: src/redshift.c:421
 #, c-format
 msgid "Location: %f, %f\n"
 msgstr "Местоположение: %f°, %f°\n"
 
-#: src/redshift.c:397
+#: src/redshift.c:428
 #, c-format
 msgid "Latitude must be between %.1f and %.1f.\n"
 msgstr "Широта должна быть между %.1f и %.1f.\n"
 
-#: src/redshift.c:406
+#: src/redshift.c:437
 #, c-format
 msgid "Longitude must be between %.1f and %.1f.\n"
 msgstr "Долгота должна быть между %.1f и %.1f.\n"
 
-#: src/redshift.c:414 src/redshift.c:422
+#: src/redshift.c:445 src/redshift.c:453
 #, c-format
 msgid "Temperature must be between %uK and %uK.\n"
 msgstr "Температура должна быть между %uK и %uK.\n"
 
-#: src/redshift.c:432
+#: src/redshift.c:463
 #, c-format
 msgid "Gamma value must be between %.1f and %.1f.\n"
 msgstr "Гамма должна быть между %.1f и %.1f.\n"
 
-#: src/redshift.c:438
+#: src/redshift.c:469
 #, c-format
 msgid "Gamma: %.3f, %.3f, %.3f\n"
 msgstr "Гамма: %.3f, %.3f, %.3f\n"
 
-#: src/redshift.c:444
+#: src/redshift.c:475
 #, c-format
 msgid "CRTC can only be selected with the RANDR method.\n"
 msgstr ""
 
-#: src/redshift.c:457
-msgid "Initialization of RANDR failed.\n"
+#: src/redshift.c:488 src/redshift.c:498
+#, fuzzy, c-format
+msgid "Initialization of %s failed.\n"
 msgstr "Инициализация RANDR не удалась.\n"
 
-#: src/redshift.c:459
+#: src/redshift.c:500
 msgid "Trying other method...\n"
 msgstr "Пробую другой метод...\n"
 
-#: src/redshift.c:474
-msgid "Initialization of VidMode failed.\n"
-msgstr "Инициализация VidMode не удалась.\n"
+#: src/redshift.c:509
+msgid "No more methods to try.\n"
+msgstr ""
+
+#: src/redshift.c:519 src/redshift.c:626
+#, fuzzy
+msgid "Unable to read system time.\n"
+msgstr "Не удается восстановить CRTC %i\n"
 
 #. TRANSLATORS: Append degree symbol if possible.
-#: src/redshift.c:497
+#: src/redshift.c:528
 #, c-format
 msgid "Solar elevation: %f\n"
 msgstr "Высота Солнца над горизонтом: %f°\n"
 
-#: src/redshift.c:504 src/redshift.c:666
+#: src/redshift.c:535 src/redshift.c:693
 #, c-format
 msgid "Color temperature: %uK\n"
 msgstr "Цветовая температура: %uK\n"
 
-#: src/redshift.c:510 src/redshift.c:675
+#: src/redshift.c:540 src/redshift.c:701
 msgid "Temperature adjustment failed.\n"
 msgstr "Корректировка цветовой температуры не удалась.\n"
 
@@ -239,3 +242,20 @@ msgstr "Запрос X не удался: %s\n"
 #: src/gtk-redshift/statusicon.py:61
 msgid "Toggle"
 msgstr "Включить / Выключить"
+
+#~ msgid "RANDR method was not enabled at compile time.\n"
+#~ msgstr "Метод RANDR был выключен во время компиляции.\n"
+
+#~ msgid "VidMode method was not enabled at compile time.\n"
+#~ msgstr "Метод VidMode был выключен во время компиляции.\n"
+
+#, fuzzy
+#~ msgid "WinGDI method was not enabled at compile time.\n"
+#~ msgstr "Метод RANDR был выключен во время компиляции.\n"
+
+#~ msgid "Initialization of VidMode failed.\n"
+#~ msgstr "Инициализация VidMode не удалась.\n"
+
+#, fuzzy
+#~ msgid "Initialization of WinGDI failed.\n"
+#~ msgstr "Инициализация RANDR не удалась.\n"
diff --git a/src/redshift.c b/src/redshift.c
index 59f7482..ad151ce 100644
--- a/src/redshift.c
+++ b/src/redshift.c
@@ -88,6 +88,53 @@ typedef enum {
 	GAMMA_METHOD_MAX
 } gamma_method_t;
 
+typedef int gamma_method_init_func(void *state, int screen_num, int crtc_num);
+typedef void gamma_method_free_func(void *state);
+typedef void gamma_method_restore_func(void *state);
+typedef int gamma_method_set_temperature_func(void *state, int temp,
+					      float gamma[3]);
+
+typedef struct {
+	char *name;
+	gamma_method_init_func *init;
+	gamma_method_free_func *free;
+	gamma_method_restore_func *restore;
+	gamma_method_set_temperature_func *set_temperature;
+} gamma_method_spec_t;
+
+
+/* Gamma adjustment method structs */
+static const gamma_method_spec_t gamma_methods[] = {
+#ifdef ENABLE_RANDR
+	{
+		"RANDR",
+		(gamma_method_init_func *)randr_init,
+		(gamma_method_free_func *)randr_free,
+		(gamma_method_restore_func *)randr_restore,
+		(gamma_method_set_temperature_func *)randr_set_temperature
+	},
+#endif
+#ifdef ENABLE_VIDMODE
+	{
+		"VidMode",
+		(gamma_method_init_func *)vidmode_init,
+		(gamma_method_free_func *)vidmode_free,
+		(gamma_method_restore_func *)vidmode_restore,
+		(gamma_method_set_temperature_func *)vidmode_set_temperature
+	},
+#endif
+#ifdef ENABLE_WINGDI
+	{
+		"WinGDI",
+		(gamma_method_init_func *)w32gdi_init,
+		(gamma_method_free_func *)w32gdi_free,
+		(gamma_method_restore_func *)w32gdi_restore,
+		(gamma_method_set_temperature_func *)w32gdi_set_temperature
+	},
+#endif
+	{ NULL, NULL, NULL, NULL, NULL }
+};
+
 
 /* Bounds for parameters. */
 #define MIN_LAT   -90.0
@@ -139,82 +186,6 @@ static int disable = 0;
 #endif /* ! HAVE_SYS_SIGNAL_H */
 
 
-/* Restore saved gamma ramps with the appropriate adjustment method. */
-static void
-gamma_state_restore(gamma_state_t *state, gamma_method_t method)
-{
-	switch (method) {
-#ifdef ENABLE_RANDR
-	case GAMMA_METHOD_RANDR:
-		randr_restore(&state->randr);
-		break;
-#endif
-#ifdef ENABLE_VIDMODE
-	case GAMMA_METHOD_VIDMODE:
-		vidmode_restore(&state->vidmode);
-		break;
-#endif
-#ifdef ENABLE_WINGDI
-	case GAMMA_METHOD_WINGDI:
-		w32gdi_restore(&state->w32gdi);
-		break;
-#endif
-	default:
-		break;
-	}
-}
-
-/* Free the state associated with the appropriate adjustment method. */
-static void
-gamma_state_free(gamma_state_t *state, gamma_method_t method)
-{
-	switch (method) {
-#ifdef ENABLE_RANDR
-	case GAMMA_METHOD_RANDR:
-		randr_free(&state->randr);
-		break;
-#endif
-#ifdef ENABLE_VIDMODE
-	case GAMMA_METHOD_VIDMODE:
-		vidmode_free(&state->vidmode);
-		break;
-#endif
-#ifdef ENABLE_WINGDI
-	case GAMMA_METHOD_WINGDI:
-		w32gdi_free(&state->w32gdi);
-		break;
-#endif
-	default:
-		break;
-	}
-}
-
-/* Set temperature with the appropriate adjustment method. */
-static int
-gamma_state_set_temperature(gamma_state_t *state, gamma_method_t method,
-			    int temp, float gamma[3])
-{
-	switch (method) {
-#ifdef ENABLE_RANDR
-	case GAMMA_METHOD_RANDR:
-		return randr_set_temperature(&state->randr, temp, gamma);
-#endif
-#ifdef ENABLE_VIDMODE
-	case GAMMA_METHOD_VIDMODE:
-		return vidmode_set_temperature(&state->vidmode, temp, gamma);
-#endif
-#ifdef ENABLE_WINGDI
-	case GAMMA_METHOD_WINGDI:
-		return w32gdi_set_temperature(&state->w32gdi, temp, gamma);
-#endif
-	default:
-		break;
-	}
-
-	return -1;
-}
-
-
 /* Calculate color temperature for the specified solar elevation. */
 static int
 calculate_temp(double elevation, int temp_day, int temp_night,
@@ -269,8 +240,8 @@ print_help(const char *program_name)
 	   no-wrap */
 	fputs(_("  -g R:G:B\tAdditional gamma correction to apply\n"
 		"  -l LAT:LON\tYour current location\n"
-		"  -m METHOD\tMethod to use to set color temperature"
-		" (RANDR, VidMode or WinGDI)\n"
+		"  -m METHOD\tMethod to use to set color temperature\n"
+		"  \t\t(Type `list' to see available methods)\n"
 		"  -o\t\tOne shot mode (do not continously adjust"
 		" color temperature)\n"
 		"  -r\t\tDisable temperature transitions\n"
@@ -292,6 +263,15 @@ print_help(const char *program_name)
 	printf("Please report bugs to <%s>\n", PACKAGE_BUGREPORT);
 }
 
+static void
+print_method_list()
+{
+	fputs(_("Available adjustment methods:\n"), stdout);
+	for (int i = 0; gamma_methods[i].name != NULL; i++) {
+		printf("  %s\n", gamma_methods[i].name);
+	}
+}
+
 
 int
 main(int argc, char *argv[])
@@ -314,7 +294,9 @@ main(int argc, char *argv[])
 	int temp_day = DEFAULT_DAY_TEMP;
 	int temp_night = DEFAULT_NIGHT_TEMP;
 	float gamma[3] = { DEFAULT_GAMMA, DEFAULT_GAMMA, DEFAULT_GAMMA };
-	int method = -1;
+
+	const gamma_method_spec_t *method = NULL;
+
 	int screen_num = -1;
 	int crtc_num = -1;
 	int transition = 1;
@@ -372,37 +354,22 @@ main(int argc, char *argv[])
 			lon = atof(s);
 			break;
 		case 'm':
-			if (strcmp(optarg, "randr") == 0 ||
-			    strcmp(optarg, "RANDR") == 0) {
-#ifdef ENABLE_RANDR
-				method = GAMMA_METHOD_RANDR;
-#else
-				fputs(_("RANDR method was not"
-					" enabled at compile time.\n"),
-				      stderr);
-				exit(EXIT_FAILURE);
-#endif
-			} else if (strcmp(optarg, "vidmode") == 0 ||
-				   strcmp(optarg, "VidMode") == 0) {
-#ifdef ENABLE_VIDMODE
-			        method = GAMMA_METHOD_VIDMODE;
-#else
-				fputs(_("VidMode method was not"
-					" enabled at compile time.\n"),
-				      stderr);
-				exit(EXIT_FAILURE);
-#endif
-			} else if (strcmp(optarg, "wingdi") == 0 ||
-				   strcmp(optarg, "WinGDI") == 0) {
-#ifdef ENABLE_WINGDI
-				method = GAMMA_METHOD_WINGDI;
-#else
-				fputs(_("WinGDI method was not"
-					" enabled at compile time.\n"),
-				      stderr);
-				exit(EXIT_FAILURE);
-#endif
-			} else {
+			/* Print list of methods if argument is `list' */
+			if (strcasecmp(optarg, "list") == 0) {
+				print_method_list();
+				exit(EXIT_SUCCESS);
+			}
+
+			/* Lookup argument in gamma methods table */
+			for (int i = 0; gamma_methods[i].name != NULL; i++) {
+				const gamma_method_spec_t *m =
+					&gamma_methods[i];
+				if (strcasecmp(optarg, m->name) == 0) {
+					method = m;
+				}
+			}
+
+			if (method == NULL) {
 				/* TRANSLATORS: This refers to the method
 				   used to adjust colors e.g VidMode */
 				fprintf(stderr, _("Unknown method `%s'.\n"),
@@ -513,63 +480,35 @@ main(int argc, char *argv[])
 	/* Initialize gamma adjustment method. If method is negative
 	   try all methods until one that works is found. */
 	gamma_state_t state;
-#ifdef ENABLE_RANDR
-	if (method < 0 || method == GAMMA_METHOD_RANDR) {
-		/* Initialize RANDR state */
-		r = randr_init(&state.randr, screen_num, crtc_num);
-		if (r < 0) {
-			fputs(_("Initialization of RANDR failed.\n"), stderr);
-			if (method < 0) {
-				fputs(_("Trying other method...\n"), stderr);
-			} else {
-				exit(EXIT_FAILURE);
-			}
-		} else {
-			method = GAMMA_METHOD_RANDR;
-		}
-	}
-#endif
 
-#ifdef ENABLE_VIDMODE
-	if (method < 0 || method == GAMMA_METHOD_VIDMODE) {
-		/* Initialize VidMode state */
-		r = vidmode_init(&state.vidmode, screen_num);
+	if (method != NULL) {
+		/* Use method specified on command line */
+		r = method->init(&state, screen_num, crtc_num);
 		if (r < 0) {
-			fputs(_("Initialization of VidMode failed.\n"),
-			      stderr);
-			if (method < 0) {
-				fputs(_("Trying other method...\n"), stderr);
-			} else {
-				exit(EXIT_FAILURE);
-			}
-		} else {
-			method = GAMMA_METHOD_VIDMODE;
+			fprintf(stderr, _("Initialization of %s failed.\n"),
+				method->name);
+			exit(EXIT_FAILURE);
 		}
-	}
-#endif
-
-#ifdef ENABLE_WINGDI
-	if (method < 0 || method == GAMMA_METHOD_WINGDI) {
-		/* Initialize WinGDI state */
-		r = w32gdi_init(&state.w32gdi);
-		if (r < 0) {
-			fputs(_("Initialization of WinGDI failed.\n"),
-			      stderr);
-			if (method < 0) {
+	} else {
+		/* Try all methods, use the first that works */
+		for (int i = 0; gamma_methods[i].name != NULL; i++) {
+			const gamma_method_spec_t *m = &gamma_methods[i];
+			r = m->init(&state, screen_num, crtc_num);
+			if (r < 0) {
+				fprintf(stderr, _("Initialization of %s"
+						  " failed.\n"), m->name);
 				fputs(_("Trying other method...\n"), stderr);
 			} else {
-				exit(EXIT_FAILURE);
+				method = m;
+				break;
 			}
-		} else {
-			method = GAMMA_METHOD_WINGDI;
 		}
-	}
-#endif
 
-	/* Failure if no methods were successful at this point. */
-	if (method < 0) {
-		fputs(_("No more methods to try.\n"), stderr);
-		exit(EXIT_FAILURE);
+		/* Failure if no methods were successful at this point. */
+		if (method == NULL) {
+			fputs(_("No more methods to try.\n"), stderr);
+			exit(EXIT_FAILURE);
+		}
 	}
 
 	if (one_shot) {
@@ -578,7 +517,7 @@ main(int argc, char *argv[])
 		r = systemtime_get_time(&now);
 		if (r < 0) {
 			fputs(_("Unable to read system time.\n"), stderr);
-			gamma_state_free(&state, method);
+			method->free(&state);
 			exit(EXIT_FAILURE);
 		}
 
@@ -596,10 +535,10 @@ main(int argc, char *argv[])
 		if (verbose) printf(_("Color temperature: %uK\n"), temp);
 
 		/* Adjust temperature */
-		r = gamma_state_set_temperature(&state, method, temp, gamma);
+		r = method->set_temperature(&state, temp, gamma);
 		if (r < 0) {
 			fputs(_("Temperature adjustment failed.\n"), stderr);
-			gamma_state_free(&state, method);
+			method->free(&state);
 			exit(EXIT_FAILURE);
 		}
 	} else {
@@ -686,7 +625,7 @@ main(int argc, char *argv[])
 			if (r < 0) {
 				fputs(_("Unable to read system time.\n"),
 				      stderr);
-				gamma_state_free(&state, method);
+				method->free(&state);
 				exit(EXIT_FAILURE);
 			}
 
@@ -737,7 +676,7 @@ main(int argc, char *argv[])
 			if (short_trans_done) {
 				if (disabled) {
 					/* Restore saved gamma ramps */
-					gamma_state_restore(&state, method);
+					method->restore(&state);
 				}
 				short_trans_done = 0;
 			}
@@ -756,13 +695,12 @@ main(int argc, char *argv[])
 
 			/* Adjust temperature */
 			if (!disabled || short_trans) {
-				r = gamma_state_set_temperature(&state,
-								method,
-								temp, gamma);
+				r = method->set_temperature(&state,
+							    temp, gamma);
 				if (r < 0) {
 					fputs(_("Temperature adjustment"
 						" failed.\n"), stderr);
-					gamma_state_free(&state, method);
+					method->free(&state);
 					exit(EXIT_FAILURE);
 				}
 			}
@@ -778,11 +716,11 @@ main(int argc, char *argv[])
 		}
 
 		/* Restore saved gamma ramps */
-		gamma_state_restore(&state, method);
+		method->restore(&state);
 	}
 
 	/* Clean up gamma adjustment state */
-	gamma_state_free(&state, method);
+	method->free(&state);
 
 	return EXIT_SUCCESS;
 }
diff --git a/src/vidmode.c b/src/vidmode.c
index 4da1831..10da7d1 100644
--- a/src/vidmode.c
+++ b/src/vidmode.c
@@ -32,7 +32,7 @@
 
 
 int
-vidmode_init(vidmode_state_t *state, int screen_num)
+vidmode_init(vidmode_state_t *state, int screen_num, int crtc_num)
 {
 	int r;
 
diff --git a/src/vidmode.h b/src/vidmode.h
index 9503441..7a11099 100644
--- a/src/vidmode.h
+++ b/src/vidmode.h
@@ -31,7 +31,7 @@ typedef struct {
 	uint16_t *saved_ramps;
 } vidmode_state_t;
 
-int vidmode_init(vidmode_state_t *state, int screen_num);
+int vidmode_init(vidmode_state_t *state, int screen_num, int crtc_num);
 void vidmode_free(vidmode_state_t *state);
 void vidmode_restore(vidmode_state_t *state);
 int vidmode_set_temperature(vidmode_state_t *state, int temp, float gamma[3]);
diff --git a/src/w32gdi.c b/src/w32gdi.c
index 9d1f143..e130d03 100644
--- a/src/w32gdi.c
+++ b/src/w32gdi.c
@@ -38,7 +38,7 @@
 
 
 int
-w32gdi_init(w32gdi_state_t *state)
+w32gdi_init(w32gdi_state_t *state, int screen_num, int crtc_num)
 {
 	BOOL r;
 
diff --git a/src/w32gdi.h b/src/w32gdi.h
index e658699..785807b 100644
--- a/src/w32gdi.h
+++ b/src/w32gdi.h
@@ -29,7 +29,7 @@ typedef struct {
 	WORD *saved_ramps;
 } w32gdi_state_t;
 
-int w32gdi_init(w32gdi_state_t *state);
+int w32gdi_init(w32gdi_state_t *state, int screen_num, int crtc_num);
 void w32gdi_free(w32gdi_state_t *state);
 void w32gdi_restore(w32gdi_state_t *state);
 int w32gdi_set_temperature(w32gdi_state_t *state, int temp, float gamma[3]);