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authorMattias Andrée [mˈa.tːiː.ˌas ˈanː.drˌeː] <maandree@operamail.com>2014-03-11 20:21:54 +0000
committerMattias Andrée [mˈa.tːiː.ˌas ˈanː.drˌeː] <maandree@operamail.com>2014-03-11 20:21:54 +0000
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-Request for contribution:
+**Request for contribution:**
- If anyone have a monitor with backlight
- supported by xbacklight. src/blueshift_randr_c.c
- needs to be extended to be able to read and set
- backlight settings. src/blueshift_idcrtc.c can
- be used as a starting point of the implementation.
+If anyone have a monitor with backlight
+supported by xbacklight. src/blueshift_randr_c.c
+needs to be extended to be able to read and set
+backlight settings. src/blueshift_idcrtc.c can
+be used as a starting point of the implementation.
+---
+Blueshift
+---------
-Blueshift adjusts the colour temperature of your
-monitor according to brightness outside to reduce
-eye strain and make it easier to fall asleep when
-going to bed. It can also be used to increase the
-colour temperature and make the monitor bluer,
-this helps you focus on your work.
+Inspired by Redshift, Blueshift adjusts the colour
+temperature of your monitor according to brightness
+outside to reduce eye strain and make it easier to
+fall asleep when going to bed. It can also be used
+to increase the colour temperature and make the
+monitor bluer, this helps you focus on your work.
-Blueshift is inspired by Redshift but is vastly
-more flexible and solves some problems with Redshift:
+Blueshift is not user friendly and it is not meant
+to be, although its user friendlyness is increasing.
+Blueshift does offer limited use of command line
+options to apply settings, but it is really meant
+for you to have configuration files (written in
+Python 3) where all the policies are implemented,
+Blueshift is only meant to provide the mechanism for
+modifying the colour curves.
- - Decreases the colour temperature too early
- during the winter which can make you tired
- during daytime.
-
- - Limited support for settings such as
- brightness and contrast. Technologies like
- Blueshift and Redshift needs to remove all
- settings made by other programs, to be
- portable and to have get accuracy, which
- means that you cannot any use other program
- at the same time. Redshift supports only
- gamman and a limited brightness range.
- Blueshift can be extended by the user to
- do anything and have built in support for
- unlimited brightness, contrast, gamma
- correction and S-curve correction.
- Brightness and contrast are normally not
- important because you should configure
- that on the monitors control panel. But
- one may want to temporarly so a change
- to contrast to increase the brightness
- beyond 100 %. Blueshift is to might
- knowledge the first program to support
- S-curve correction which is important
- for LCD monitors which suffers the effects
- of S-curves.
-
- - No support of ICC profiles.
-
-Blueshift is not user friendly and it is not
-meant too be. Blueshift does offer limited
-use of command line options to apply settings,
-but it is really meant for you to have configuration
-files (written in Python 3) where all the policies
-are implemented, Blueshift is only meant to provide
-the mechanism for modifying the colour curves.
Blueshift neither provides any means of automatically
-getting your geographical position; the intention is
+getting your geographical location; the intention is
that you should implement that in the policy yourself
-using library which can do that. Additionally
-Blueshift provides not safe guards from making your
-screen unreadable or otherwise miscoloured; and
-Blueshift will never, officially, add support
-specifically for any proprietary operating system.
-Blueshift is fully extensible so it is possible to
-make extensions that make it usable under unsupported
-systems, the base code is written in Python 3 without
-calls to any system dependent functions.
+using library which can do that. Additionally Blueshift
+provides not safe guards from making your screen
+unreadable or otherwise miscoloured; and Blueshift will
+never, officially, add support specifically for any
+proprietary operating system. Blueshift is fully
+extensible so it is possible to make extensions that
+make it usable under unsupported systems, the base code
+is written in Python 3 without calls to any system
+dependent functions (with exception for fallbacks.)
+This is not necessarily true for configuration script
+examples and optional features.
+
If Blueshift does not work for you for any of these
-reasons, you should take a look at Redshift.
+reasons, you should take a look at Redshift. The mean
+reason for using Blueshift over Redshift is to add
+adjustments that they implemented in Redshift or
+using very customised behaviour, such as the example
+configurations scripts sleepmode, xmobar and xmonad.
+
+Installing
+----------
+
+#### Manually
+
+ make PREFIX=/usr/local LIBEXEC=/libexec/blueshift
+ sudo make PREFIX=/usr/local LIBEXEC=/libexec/blueshift install
+ sudo install-info /usr/local/share/info/{blueshift.info,dir}
+
+See `DEPENDENCIES` for dependencies, and `Makefile` for
+additional installation options.
+
+On error make sure you do not have `--as-needed` in `LDFLAGS`.
+
+#### Arch Linux
+Blueshift is available in the Arch User Repository,
+under the name `blueshift`.