pidgin/pidgin

Add a wrapper around the mdns interface implementation.

2020-12-31, Elliott Sales de Andrade
6777a9b23fd0
Add a wrapper around the mdns interface implementation.

This might seem weird, but it's preparation to do more implementation work on Windows. Possibly also macOS, as it's weird that Avahi appears to be used and not Apple's version.

Testing Done:
Compile on both, and run on Linux.

Reviewed at https://reviews.imfreedom.org/r/315/
/*
* 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
* 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 "pidgin/pidginstyle.h"
/* Assume light mode */
static gboolean dark_mode_have_cache = FALSE;
static gboolean dark_mode_cached_value = FALSE;
gboolean
pidgin_style_is_dark(GtkStyle *style) {
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
GdkColor bg;
gdouble luminance = 0.0;
if(style == NULL) {
if(dark_mode_have_cache) {
return dark_mode_cached_value;
}
style = gtk_widget_get_default_style();
}
bg = style->base[GTK_STATE_NORMAL];
/* magic values are taken from https://en.wikipedia.org/wiki/Luma_(video)
* Rec._601_luma_versus_Rec._709_luma_coefficients.
*/
luminance = (0.299 * bg.red) + (0.587 * bg.green) + (0.114 * bg.blue);
G_GNUC_END_IGNORE_DEPRECATIONS
dark_mode_cached_value = (luminance < 0x7FFF);
dark_mode_have_cache = TRUE;
return dark_mode_cached_value;
}
void
pidgin_style_adjust_contrast(GtkStyle *style, GdkRGBA *rgba) {
if (pidgin_style_is_dark(style)) {
gdouble h, s, v;
gtk_rgb_to_hsv(rgba->red, rgba->green, rgba->blue, &h, &s, &v);
v += 0.3;
v = v > 1.0 ? 1.0 : v;
s = 0.7;
gtk_hsv_to_rgb(h, s, v, &rgba->red, &rgba->green, &rgba->blue);
}
}