forked from github_mirror/framelesshelper
96 lines
3.1 KiB
C++
96 lines
3.1 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 "framelesshelper.h"
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#include <QtGui/qevent.h>
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#include <QtGui/qwindow.h>
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#include "utilities.h"
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FRAMELESSHELPER_BEGIN_NAMESPACE
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FramelessHelper::FramelessHelper(QObject *parent) : QObject(parent) {}
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FramelessHelper::~FramelessHelper() = default;
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void FramelessHelper::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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window->setFlags(window->flags() | Qt::FramelessWindowHint);
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window->installEventFilter(this);
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}
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void FramelessHelper::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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window->removeEventFilter(this);
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window->setFlags(window->flags() & ~Qt::FramelessWindowHint);
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}
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bool FramelessHelper::eventFilter(QObject *object, QEvent *event)
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{
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Q_ASSERT(object);
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Q_ASSERT(event);
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if (!object || !event) {
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return false;
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}
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// Only monitor window events.
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if (!object->isWindowType()) {
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return false;
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}
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const QEvent::Type type = event->type();
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// We are only interested in mouse events.
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if ((type != QEvent::MouseButtonPress) && (type != QEvent::MouseMove)) {
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return false;
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}
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const auto window = qobject_cast<QWindow *>(object);
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const auto mouseEvent = static_cast<QMouseEvent *>(event);
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#if (QT_VERSION >= QT_VERSION_CHECK(6, 0, 0))
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const QPointF localPos = mouseEvent->position();
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#else
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const QPointF localPos = mouseEvent->windowPos();
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#endif
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if (type == QEvent::MouseMove) {
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const Qt::CursorShape cs = Utilities::calculateCursorShape(window, localPos);
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if (cs == Qt::ArrowCursor) {
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window->unsetCursor();
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} else {
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window->setCursor(cs);
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}
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} else if (type == QEvent::MouseButtonPress) {
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const Qt::Edges edges = Utilities::calculateWindowEdges(window, localPos);
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if (edges != Qt::Edges{}) {
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Utilities::startSystemResize(window, edges);
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}
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}
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return false;
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}
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FRAMELESSHELPER_END_NAMESPACE
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