pidgin/pidgin

Create a new standalone info pane widget

2021-04-19, Gary Kramlich
2bd48c93678a
Create a new standalone info pane widget

This currently doesn't support the following options:

* protocol icons
* emblems like mobile, etc
* buddy status's
* editing topics

There is also an issue where the avatar will cause it to grow larger than an
infopane without an avatar.

Testing Done:
Ran locally, verified it works are currently intended with chats, buddies, and non-buddies.

Reviewed at https://reviews.imfreedom.org/r/614/
/*
* 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/pidginstylecontext.h"
/* Assume light mode */
static gboolean dark_mode_have_cache = FALSE;
static gboolean dark_mode_cached_value = FALSE;
/******************************************************************************
* Public API
*****************************************************************************/
void
pidgin_style_context_get_background_color(GdkRGBA *color) {
/* This value will leak, we could put a shutdown function in but right now
* that seems like a bit much for a few bytes.
*/
static GdkRGBA *background = NULL;
if(g_once_init_enter(&background)) {
GdkRGBA *bg = NULL;
GtkStyleContext *context = NULL;
GtkWidget *window = NULL;
/* We create a window to get its background color from its style
* context. This _is_ doable without creating a window, but you still
* need the window class and about four times as much code, so that's
* why we do it this way.
*/
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
context = gtk_widget_get_style_context(window);
gtk_style_context_get(context, GTK_STATE_FLAG_NORMAL,
GTK_STYLE_PROPERTY_BACKGROUND_COLOR, &bg,
NULL);
gtk_widget_destroy(window);
g_once_init_leave(&background, bg);
}
*color = *background;
}
gboolean
pidgin_style_context_is_dark(void) {
GdkRGBA bg;
gdouble luminance = 0.0;
if(dark_mode_have_cache) {
return dark_mode_cached_value;
}
pidgin_style_context_get_background_color(&bg);
/* 709 coefficients from https://en.wikipedia.org/wiki/Luma_(video) */
luminance = (0.2126 * bg.red) + (0.7152 * bg.green) + (0.0722 * bg.blue);
dark_mode_cached_value = (luminance < 0.5);
dark_mode_have_cache = TRUE;
return dark_mode_cached_value;
}