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Fix various small documentation errors
19 months ago, Elliott Sales de Andrade
316c1207f787
Fix various small documentation errors
Fix missing transfer annotations, remove old syntax from gtk-doc, correct an `element-type` annotation, and fix a typo.
Testing Done:
Compiled with docs on, and got fewer warnings. Also functions with added transfer annotations are no longer unavailable to bindings.
Reviewed at https://reviews.imfreedom.org/r/1855/
/*
* Pidgin - Internet Messenger
* Copyright (C) Pidgin Developers <devel@pidgin.im>
*
* Pidgin is the legal property of its developers, whose names are too numerous
* to list here. Please refer to the COPYRIGHT file distributed with this
* source distribution.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this library; if not, see <https://www.gnu.org/licenses/>.
*/
#include
"pidgincolor.h"
/******************************************************************************
* Public API
*****************************************************************************/
void
pidgin_color_calculate_for_text
(
const
gchar
*
text
,
GdkRGBA
*
color
)
{
GdkRGBA
background
;
GChecksum
*
checksum
=
NULL
;
guchar
digest
[
20
];
gsize
digest_len
=
sizeof
(
digest
);
gfloat
hue
=
0
,
red
=
0
,
green
=
0
,
blue
=
0
;
g_return_if_fail
(
color
!=
NULL
);
#warning figure out how to get the background color
gdk_rgba_parse
(
&
background
,
"#FFFFFFFF"
);
/* hash the string and get the first 2 bytes of the digest */
checksum
=
g_checksum_new
(
G_CHECKSUM_SHA1
);
if
(
text
!=
NULL
)
{
g_checksum_update
(
checksum
,
(
const
guchar
*
)
text
,
-1
);
}
g_checksum_get_digest
(
checksum
,
digest
,
&
digest_len
);
g_checksum_free
(
checksum
);
/* Calculate the hue based on the digest. We need a value between 0 and 1
* so we divide the value by 65535 which is the maximum value for 2 bytes.
*/
hue
=
(
digest
[
0
]
<<
8
|
digest
[
1
])
/
65535.0f
;
/* Get the rgb values for the hue at full saturation and value. */
gtk_hsv_to_rgb
(
hue
,
1.0f
,
1.0f
,
&
red
,
&
green
,
&
blue
);
/* Finally calculate the color summing 20% of the inverted background color
* with 80% of the color.
*/
color
->
red
=
(
0.2f
*
(
1
-
background
.
red
))
+
(
0.8f
*
red
);
color
->
green
=
(
0.2f
*
(
1
-
background
.
green
))
+
(
0.8f
*
green
);
color
->
blue
=
(
0.2f
*
(
1
-
background
.
blue
))
+
(
0.8f
*
blue
);
color
->
alpha
=
1.0f
;
}