forked from github_mirror/framelesshelper
129 lines
4.5 KiB
C++
129 lines
4.5 KiB
C++
/*
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* MIT License
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*
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* Copyright (C) 2022 by wangwenx190 (Yuhang Zhao)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "framelesswindowsmanager.h"
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#include "framelesswindowsmanager_p.h"
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#include <QtCore/qvariant.h>
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#include <QtGui/qscreen.h>
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#include "framelesshelper.h"
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#include "utilities.h"
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#ifdef Q_OS_WINDOWS
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# include "framelesshelper_win32.h"
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#endif
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FRAMELESSHELPER_BEGIN_NAMESPACE
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#ifdef Q_OS_WINDOWS
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static const bool g_usePureQtImplementation = (qEnvironmentVariableIntValue("FRAMELESSHELPER_PURE_QT_IMPL") != 0);
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#else
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static constexpr const bool g_usePureQtImplementation = true;
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#endif
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namespace Private
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{
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Q_GLOBAL_STATIC(FramelessManager, g_manager)
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FramelessManager::FramelessManager() = default;
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FramelessManager::~FramelessManager() = default;
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FramelessManager *FramelessManager::instance()
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{
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return g_manager();
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}
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}
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void FramelessWindowsManager::addWindow(QWindow *window)
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{
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Q_ASSERT(window);
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if (!window) {
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return;
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}
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QMutexLocker locker(&Private::g_manager()->mutex);
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if (Private::g_manager()->qwindow.contains(window)) {
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return;
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}
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QVariantHash data = {};
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data.insert(kWindow, QVariant::fromValue(window));
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if (g_usePureQtImplementation) {
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const auto qtFramelessHelper = new FramelessHelper(window);
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qtFramelessHelper->addWindow(window);
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data.insert(kFramelessHelper, QVariant::fromValue(qtFramelessHelper));
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}
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#ifdef Q_OS_WINDOWS
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else {
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FramelessHelperWin::addWindow(window);
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}
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// Work-around Win32 multi-monitor artifacts.
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QObject::connect(window, &QWindow::screenChanged, window, [window](QScreen *screen){
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Q_UNUSED(screen);
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// Force a WM_NCCALCSIZE event to inform Windows about our custom window frame,
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// this is only necessary when the window is being moved cross monitors.
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Utilities::triggerFrameChange(window->winId());
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// For some reason the window is not repainted correctly when moving cross monitors,
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// we workaround this issue by force a re-paint and re-layout of the window by triggering
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// a resize event manually. Although the actual size does not change, the issue we
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// observed disappeared indeed, amazingly.
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window->resize(window->size());
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});
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#endif
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const QUuid uuid = QUuid::createUuid();
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Private::g_manager()->qwindow.insert(window, uuid);
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Private::g_manager()->winId.insert(window->winId(), uuid);
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Private::g_manager()->data.insert(uuid, data);
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}
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void FramelessWindowsManager::removeWindow(QWindow *window)
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{
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Q_ASSERT(window);
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if (!window) {
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return;
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}
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QMutexLocker locker(&Private::g_manager()->mutex);
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if (!Private::g_manager()->qwindow.contains(window)) {
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return;
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}
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const QUuid uuid = Private::g_manager()->qwindow.value(window);
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Q_ASSERT(Private::g_manager()->data.contains(uuid));
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if (!Private::g_manager()->data.contains(uuid)) {
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return;
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}
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const QVariantHash data = Private::g_manager()->data.value(uuid);
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if (data.contains(kFramelessHelper)) {
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const auto qtFramelessHelper = qvariant_cast<FramelessHelper *>(data.value(kFramelessHelper));
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Q_ASSERT(qtFramelessHelper);
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if (qtFramelessHelper) {
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qtFramelessHelper->removeWindow(window);
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delete qtFramelessHelper;
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}
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}
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Private::g_manager()->qwindow.remove(window);
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Private::g_manager()->winId.remove(window->winId());
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Private::g_manager()->data.remove(uuid);
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}
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FRAMELESSHELPER_END_NAMESPACE
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