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FileManager: Listen for changes to Desktop wallpaper in config

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Since there's no global API for being able to just assign a callback
function to config changes, I've made an inline struct in desktop
mode with the sole purpose of checking to see if the Wallpaper
entry has changed, and then updates GUI::Desktop.

It's pretty neat seeing the wallpaper change as soon as you edit the
config file :^)
This commit is contained in:
Mustafa Quraish 2021-08-27 10:55:27 -04:00 • committed by Brian Gianforcaro
parent 4bf88436cb
commit fdfc0d1bac
1 changed files with 11 additions and 0 deletions
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11
Userland/Applications/FileManager/main.cpp
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@ -1,6 +1,7 @@
/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
* Copyright (c) 2021, Mustafa Quraish <mustafa@cs.toronto.edu>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -14,6 +15,7 @@
#include <AK/URL.h>
#include <Applications/FileManager/FileManagerWindowGML.h>
#include <LibConfig/Client.h>
#include <LibConfig/Listener.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <LibCore/StandardPaths.h>
@ -93,6 +95,7 @@ int main(int argc, char** argv)
Config::pledge_domains({ "FileManager", "WindowManager" });
Config::monitor_domain("FileManager");
Config::monitor_domain("WindowManager");
if (is_desktop_mode)
return run_in_desktop_mode();
@ -439,6 +442,14 @@ int run_in_desktop_mode()
}
};
struct BackgroundWallpaperListener : Config::Listener {
virtual void config_string_did_change(String const& domain, String const& group, String const& key, String const& value) override
{
if (domain == "WindowManager" && group == "Background" && key == "Wallpaper")
GUI::Desktop::the().set_wallpaper(value, false);
}
} wallpaper_listener;
auto selected_wallpaper = Config::read_string("WindowManager", "Background", "Wallpaper", "");
if (!selected_wallpaper.is_empty()) {
GUI::Desktop::the().set_wallpaper(selected_wallpaper, false);