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// SPDX-License-Identifier: GPL-3.0-only
// SPDX-FileCopyrightText: 2026 Project Tick
// SPDX-FileContributor: Project Tick Team
/*
* ProjT Launcher - Minecraft Launcher
* Copyright (C) 2026 Project Tick
*
* 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, version 3.
*
* 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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* === Upstream License Block (Do Not Modify) ==============================
*
*
*
* Prism Launcher - Minecraft Launcher
* Copyright (C) 2025 Kenneth Chew <79120643+kthchew@users.noreply.github.com>
*
* 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, version 3.
*
* 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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ======================================================================== */
#include "ThemeManager.h"
#include <AppKit/AppKit.h>
void ThemeManager::setTitlebarColorOnMac(WId windowId, QColor color) {
if (windowId == 0) {
return;
}
NSView* view = (NSView*)windowId;
NSWindow* window = [view window];
window.titlebarAppearsTransparent = YES;
window.backgroundColor = [NSColor colorWithRed:color.redF()
green:color.greenF()
blue:color.blueF()
alpha:color.alphaF()];
// Unfortunately there seems to be no easy way to set the titlebar text color.
// The closest we can do without dubious hacks is set the dark/light mode state based on the brightness of the
// background color, which should at least make the text readable even if we can't use the theme's text color.
// It's a good idea to set this anyway since it also affects some other UI elements like text shadows
// (PrismLauncher#3825).
if (color.lightnessF() < 0.5) {
window.appearance = [NSAppearance appearanceNamed:NSAppearanceNameDarkAqua];
} else {
window.appearance = [NSAppearance appearanceNamed:NSAppearanceNameAqua];
}
}
void ThemeManager::setTitlebarColorOfAllWindowsOnMac(QColor color) {
NSArray<NSWindow*>* windows = [NSApp windows];
for (NSWindow* window : windows) {
setTitlebarColorOnMac((WId)window.contentView, color);
}
// We want to change the titlebar color of newly opened windows as well.
// There's no notification for when a new window is opened, but we can set the color when a window switches
// from occluded to visible, which also fires on open.
NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
stopSettingNewWindowColorsOnMac();
m_windowTitlebarObserver = [center addObserverForName:NSWindowDidChangeOcclusionStateNotification
object:nil
queue:[NSOperationQueue mainQueue]
usingBlock:^(NSNotification* notification) {
NSWindow* window = notification.object;
setTitlebarColorOnMac((WId)window.contentView, color);
}];
}
void ThemeManager::stopSettingNewWindowColorsOnMac() {
if (m_windowTitlebarObserver) {
NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
[center removeObserver:m_windowTitlebarObserver];
m_windowTitlebarObserver = nil;
}
}
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