pidgin/pidgin

Greatly simplify the nick color generation and properly detect dark themes.

2021-01-18, Gary Kramlich
766bbe6061ec
Greatly simplify the nick color generation and properly detect dark themes.

Instead of randomly adjusting colors based on some seed colors we now hash a user's name and use the first 2 bytes of the digest to determine the hue to color their nick. We then adjust it according to the background color.

This isn't perfect as you can see in the screen shot, but there are some tweaks we can do later to account for that. I skipped them for now as this gets us 90% of the way there with like 50% of the work.

Testing Done:
Compiled and ran locally with Adwaita, Adwaita-Dark, and Arc-Dark themes.

Bugs closed: PIDGIN-17463

Reviewed at https://reviews.imfreedom.org/r/423/
/*
* purple
*
* Purple 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 program; if not, see <https://www.gnu.org/licenses/>.
*/
#ifndef PURPLE_BUDDY_PRESENCE_H
#define PURPLE_BUDDY_PRESENCE_H
/**
* SECTION:purplebuddypresence
* @section_id: libpurple-purplebuddypresence
* @title: Buddy Presence API
*
* A #PurpleBuddyPresence represent the #PurplePresence for a specific
* #PurpleBuddy.
*/
#include "buddylist.h"
#include "purplepresence.h"
G_BEGIN_DECLS
/**
* PurpleBuddyPresence:
*
* A presence for a buddy
*/
/**
* PURPLE_TYPE_BUDDY_PRESENCE:
*
* The standard _get_type macro for #PurpleBuddyPresence.
*/
#define PURPLE_TYPE_BUDDY_PRESENCE (purple_buddy_presence_get_type())
/**
* purple_buddy_presence_get_type:
*
* Returns: The #GType for the #PurpleBuddyPresence object.
*/
G_DECLARE_FINAL_TYPE(PurpleBuddyPresence, purple_buddy_presence, PURPLE,
BUDDY_PRESENCE, PurplePresence)
/**
* purple_buddy_presence_new:
* @buddy: The buddy to associate with the presence.
*
* Creates a presence for a buddy.
*
* Returns: The new presence.
*
* Since: 3.0.0
*/
PurpleBuddyPresence *purple_buddy_presence_new(PurpleBuddy *buddy);
/**
* purple_buddy_presence_get_buddy:
* @presence: The presence.
*
* Returns the buddy presence's buddy.
*
* Returns: (transfer none): The presence's buddy.
*/
PurpleBuddy *purple_buddy_presence_get_buddy(PurpleBuddyPresence *presence);
/**
* purple_buddy_presence_compare:
* @buddy_presence1: The first presence.
* @buddy_presence2: The second presence.
*
* Compares two buddy presences for availability.
*
* Returns: -1 if @buddy_presence1 is more available than @buddy_presence2.
* 0 if @buddy_presence1 is equal to @buddy_presence2.
* 1 if @buddy_presence1 is less available than @buddy_presence2.
*/
gint purple_buddy_presence_compare(PurpleBuddyPresence *buddy_presence1,
PurpleBuddyPresence *buddy_presence2);
G_END_DECLS
#endif /* PURPLE_BUDDY_PRESENCE_H */