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authorMattias Andrée <maandree@operamail.com>2014-02-24 19:34:33 +0100
committerMattias Andrée <maandree@operamail.com>2014-02-24 19:34:33 +0100
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treeacd622b5e783a508054dae7860a2b10f83f98fd7 /info/blueshift.texinfo
parentand twilight solar elevation constants (diff)
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split Configuration API chapter into 7 sections
Signed-off-by: Mattias Andrée <maandree@operamail.com>
Diffstat (limited to '')
-rw-r--r--info/blueshift.texinfo94
1 files changed, 66 insertions, 28 deletions
diff --git a/info/blueshift.texinfo b/info/blueshift.texinfo
index b61d28e..0851413 100644
--- a/info/blueshift.texinfo
+++ b/info/blueshift.texinfo
@@ -278,6 +278,20 @@ Disables or enables Blueshift.
@node Configuration API
@chapter Configuration API
+@menu
+* Configuration variables:: Configuration variables
+* Colour curve manipulators:: Configuration functions colour adjustments
+* Custom colour curve manipulators:: Creating custom colour adjustment functions
+* Preexisting adjustments:: Using preexisting adjustment, in use and ICC
+* Applying colour curves:: Appying colour adjustments to the video drivers
+* Continuous mode:: Creating continuous mode configurations
+* Solar time:: Solar functions, such as elevation calcuation
+@end menu
+
+
+@node Configuration variables
+@section Configuration variables
+
Blueshift has three colour curves:
@table @code
@@ -300,6 +314,18 @@ When applied these values are automatically
translated to appropriate integer values:
[0, @code{o_size} - 1].
+Additionally if the variable @code{panicgate}
+is @code{True}, there is no fading when the program
+starts. And @code{conf_opts} is a list of command line
+arguments passed onto the configuration script; and
+@code{conf_storage} is a dictionary can be used to
+store information is required to survive a
+configuration reload, such as replaced functions.
+
+
+@node Colour curve manipulators
+@section Colour curve manipulators
+
Blueshift provides a set of functions to
manipulate these curves:
@@ -531,25 +557,6 @@ and @code{gy} for green, and @code{bx} and @code{by}
for blue.
@end table
-If you have an ICC profile for calibration (applied last)
-or want to use one for as a video filter (applied first),
-the function @code{load_icc} can be used to load an ICC
-profile file. @code{load_icc} takes one argument, the
-pathname of the ICC profile file; the function returns
-a fuction that can be invoked to apply the profile.
-
-If you want to apply your adjustments on top of the
-current colour adjustments, you can use the functions
-@code{randr_get} or @code{vidmode_get}. @code{randr_get}
-and @code{vidmode_get} have optional two parameters,
-@code{crtc} and @code{screen}, which are the CRTC of
-the monitor to read from, and the screen to which the
-monitor belongs, respectively. The functions return
-a parameterless function that applies adjustsments
-that were applied at the time of invokation of
-@code{randr_get} or @code{vidmode_get} to the current
-working curves.
-
Keep in mind that the order your call the
function matters. For example, adjusting
the gamma before the brightness does not
@@ -562,6 +569,10 @@ the very first time) reset the curves by invoking
@code{start_over} (no parameters.) Otherwise the
adjustments will accumulate.
+
+@node Custom colour curve manipulators
+@section Custom colour curve manipulators
+
If you want to write your own functions
@code{curves(r, g, b)} returns a tuple
containing the tuples @code{(r_curve, r)},
@@ -599,6 +610,33 @@ All these functions return lists with
the three colour components, not tuples.
Input and output is one colour instance.
+
+@node Preexisting adjustments
+@section Preexisting adjustments
+
+If you have an ICC profile for calibration (applied last)
+or want to use one for as a video filter (applied first),
+the function @code{load_icc} can be used to load an ICC
+profile file. @code{load_icc} takes one argument, the
+pathname of the ICC profile file; the function returns
+a fuction that can be invoked to apply the profile.
+
+If you want to apply your adjustments on top of the
+current colour adjustments, you can use the functions
+@code{randr_get} or @code{vidmode_get}. @code{randr_get}
+and @code{vidmode_get} have optional two parameters,
+@code{crtc} and @code{screen}, which are the CRTC of
+the monitor to read from, and the screen to which the
+monitor belongs, respectively. The functions return
+a parameterless function that applies adjustsments
+that were applied at the time of invokation of
+@code{randr_get} or @code{vidmode_get} to the current
+working curves.
+
+
+@node Applying colour curves
+@section Applying colour curves
+
To apply a colour curve to the display
server, invoke the @code{randr} function, or
@code{vidmode}@footnote{@code{vidmode} has
@@ -640,6 +678,10 @@ the desired monitors to the display server.
This is only done if Blueshift runs in
continuous mode.
+
+@node Continuous mode
+@section Continuous mode
+
In continuous mode, there are some interesting
variables you can adjust at any time:
@@ -680,14 +722,6 @@ the second time a SIGTERM signal has been received.
(Or if both has happend.)
@end table
-Additionally if the variable @code{panicgate}
-is @code{True}, there is no fading when the program
-starts. And @code{conf_opts} is a list of command line
-arguments passed onto the configuration script; and
-@code{conf_storage} is a dictionary can be used to
-store information is required to survive a
-configuration reload, such as replaced functions.
-
The parameterless function @code{continuous_run},
may replace if you want to do something very special,
is invoked to run the continuous mode, it the program
@@ -774,10 +808,14 @@ seconds, minutes, hours, or even days, months or
years, the delay between Blueshift's timestamp
and yours could overlap an increase in the second.
+
+@node Solar time
+@section Solar time
+
Blueshift includes a simple way to get the Sun's
position. The function @code{sun(latitude, longitude)}
returns the visibility of the Sun as an [0, 1] floating
-point. It has three optional parameters:
+point. It has three optional, additional, parameters:
@table @code
@item t = None