mirror of
https://github.com/OPM/ResInsight.git
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129 lines
5.1 KiB
C++
129 lines
5.1 KiB
C++
/////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2018- Equinor ASA
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//
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// ResInsight is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
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// for more details.
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//
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/////////////////////////////////////////////////////////////////////////////////
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#include "RiuWidgetDragger.h"
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#include <QEvent>
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#include <QWidget>
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#include <QMouseEvent>
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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RiuWidgetDragger::RiuWidgetDragger(QWidget* widgetToMove, QWidget* widgetToSnapTo /*= nullptr*/, int snapMargins /*= 5*/)
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: QObject(widgetToMove)
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, m_widgetToMove(widgetToMove)
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, m_widgetToSnapTo(widgetToSnapTo)
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, m_snapMargins(snapMargins)
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, m_startPos(0,0)
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{
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addWidget(m_widgetToMove);
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuWidgetDragger::addWidget(QWidget* widget)
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{
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widget->installEventFilter(this);
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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bool RiuWidgetDragger::eventFilter(QObject * watched, QEvent * event)
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{
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if (event->type() == QEvent::MouseMove)
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{
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QMouseEvent* mMoveEv = static_cast<QMouseEvent*>(event);
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if (mMoveEv->buttons() & Qt::LeftButton)
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{
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QPoint relativeMove = mMoveEv->pos() - m_startPos;
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QRect newFrameRect = m_widgetToMove->frameGeometry().translated(relativeMove);
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if (m_widgetToSnapTo)
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{
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QRect snapToRect = m_widgetToSnapTo->frameGeometry();
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{
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QPoint snapToTopLeft = snapToRect.topLeft();
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QPoint widgetTopLeft = newFrameRect.topLeft();
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QPoint diff = snapToTopLeft - widgetTopLeft;
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if (std::abs(diff.x()) < 4 * m_snapMargins)
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{
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newFrameRect.moveLeft(snapToTopLeft.x() + m_snapMargins);
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}
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if (std::abs(diff.y()) < 4 * m_snapMargins)
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{
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newFrameRect.moveTop(snapToTopLeft.y() + m_snapMargins);
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}
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}
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{
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QPoint snapToBottomLeft = snapToRect.bottomLeft();
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QPoint widgetBottomLeft = newFrameRect.bottomLeft();
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QPoint diff = snapToBottomLeft - widgetBottomLeft;
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if (std::abs(diff.x()) < 4 * m_snapMargins)
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{
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newFrameRect.moveLeft(snapToBottomLeft.x() + m_snapMargins);
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}
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if (std::abs(diff.y()) < 4 * m_snapMargins)
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{
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newFrameRect.moveBottom(snapToBottomLeft.y() - m_snapMargins);
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}
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}
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{
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QPoint snapToTopRight = snapToRect.topRight();
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QPoint widgetTopRight = newFrameRect.topRight();
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QPoint diff = snapToTopRight - widgetTopRight;
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if (std::abs(diff.x()) < 4 * m_snapMargins)
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{
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newFrameRect.moveRight(snapToTopRight.x() - m_snapMargins);
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}
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if (std::abs(diff.y()) < 4 * m_snapMargins)
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{
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newFrameRect.moveTop(snapToTopRight.y() + m_snapMargins);
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}
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}
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{
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QPoint snapToBottomRight = snapToRect.bottomRight();
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QPoint widgetBottomRight = newFrameRect.bottomRight();
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QPoint diff = snapToBottomRight - widgetBottomRight;
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if (std::abs(diff.x()) < 4 * m_snapMargins)
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{
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newFrameRect.moveRight(snapToBottomRight.x() - m_snapMargins);
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}
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if (std::abs(diff.y()) < 4 * m_snapMargins)
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{
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newFrameRect.moveBottom(snapToBottomRight.y() - m_snapMargins);
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}
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}
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}
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m_widgetToMove->move(newFrameRect.topLeft());
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return true;
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}
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}
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else if (event->type() == QEvent::MouseButtonPress)
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{
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QMouseEvent* mEv = static_cast<QMouseEvent*>(event);
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m_startPos = mEv->pos();
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return true;
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}
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return false;
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}
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