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 - Internet Messaging Library
* Copyright (C) Pidgin Developers <devel@pidgin.im>
*
* 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/>.
*/
#if !defined(PURPLE_GLOBAL_HEADER_INSIDE) && !defined(PURPLE_COMPILATION)
# error "only <pidgin.h> may be included directly"
#endif
#ifndef PURPLE_WHITEBOARD_OPS_H
#define PURPLE_WHITEBOARD_OPS_H
/**
* SECTION:purplewhiteboardops
* @section_id: libpurple-purplewhiteboardops
* @short_description: Whiteboard Protocol Operations
* @title: Whiteboard Protocol Operations
*
* #PurpleWhiteboardOps contains the protocol operations for whiteboards.
*/
#include <glib.h>
typedef struct _PurpleWhiteboardOps PurpleWhiteboardOps;
#include "purplewhiteboard.h"
G_BEGIN_DECLS
/**
* PurpleWhiteboardOps:
* @start: start function
* @end: end function
* @get_dimensions: get whiteboard dimensions
* @set_dimensions: set whiteboard dimensions
* @get_brush: get the brush size and color
* @set_brush: set the brush size and color
* @send_draw_list: send_draw_list function
* @clear: clear whiteboard
*
* Whiteboard protocol operations
*/
struct _PurpleWhiteboardOps
{
void (*start)(PurpleWhiteboard *wb);
void (*end)(PurpleWhiteboard *wb);
void (*get_dimensions)(const PurpleWhiteboard *wb, int *width, int *height);
void (*set_dimensions)(PurpleWhiteboard *wb, int width, int height);
void (*get_brush) (const PurpleWhiteboard *wb, int *size, int *color);
void (*set_brush) (PurpleWhiteboard *wb, int size, int color);
void (*send_draw_list)(PurpleWhiteboard *wb, GList *draw_list);
void (*clear)(PurpleWhiteboard *wb);
/*< private >*/
gpointer reserved[4];
};
G_END_DECLS
#endif /* PURPLE_WHITEBOARD_OPS_H */