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https://github.com/lucaspalomodevelop/meshlab.git
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126 lines
4.6 KiB
C++
126 lines
4.6 KiB
C++
/****************************************************************************
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* MeshLab o o *
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* A versatile mesh processing toolbox o o *
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* _ O _ *
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* Copyright(C) 2005 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program 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 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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/****************************************************************************
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History
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Revision 1.0 2008/02/20 Alessandro Maione, Federico Bellucci
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FIRST RELEASE
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****************************************************************************/
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#include "tfhandle.h"
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//declaration of static member of TFHandle class
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TransferFunction* TFHandle::_tf = 0;
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//TFHandle::TFHandle(int channel_code, int junction, CHART_INFO *environment_info) : _channelCode(channel_code), _junction_side(junction)
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TFHandle::TFHandle(CHART_INFO *environment_info, QColor color, QPointF position, TF_KEY *myKey, int zOrder, int size )
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: Handle(environment_info, color, position, zOrder, size )
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{
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COLOR_2_TYPE(color, _channelCode);
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_myKey = myKey;
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_currentlySelected = false;
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this->setZValue( zOrder );
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//updating the position at logical state of the handle
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this->updateTfHandlesState(position);
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}
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TFHandle::~TFHandle(void)
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{
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}
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//paint callback
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void TFHandle::paint ( QPainter * painter, const QStyleOptionGraphicsItem * option, QWidget * widget /*= 0*/ )
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{
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Q_UNUSED(option);
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Q_UNUSED(widget);
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//if the handle is the currently selected one a darker color is used to draw it
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if (_currentlySelected)
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{
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painter->setPen(_color.darker());
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painter->setBrush(_color.darker());
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}
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else
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{
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//else, simply use normal channel color
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painter->setPen(_color);
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painter->setBrush(_color);
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}
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painter->drawRect(((qreal)-_size)/2.0f, -((qreal)_size)/2.0f, _size, _size);
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}
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QRectF TFHandle::boundingRect () const
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{
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return QRectF(((qreal)-_size)/2.0f, ((qreal)-_size)/2.0f, _size, _size);
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}
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//callback to manage the mouse move
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void TFHandle::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
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{
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setCursor(Qt::OpenHandCursor);
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//fetching new position in the scene
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QPointF newPos = event->scenePos();
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newPos.setX(newPos.x()-(_size/2.0f));
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newPos.setY(newPos.y()-(_size/2.0f));
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//the handle can be moved only INSIDE the TF scene
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if (( newPos.x() >= _chartInfo->leftBorder() ) && ( newPos.x() <= _chartInfo->rightBorder() ) &&
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( newPos.y() >= _chartInfo->upperBorder() ) && ( newPos.y() <= _chartInfo->lowerBorder() ))
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{
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//updating new position in the scene
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this->setPos(newPos);
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//updating the position at logical state of the handle
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this->updateTfHandlesState(newPos);
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emit positionChanged(this);
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}
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}
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//updates the position at logical state of the handle
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void TFHandle::updateTfHandlesState(QPointF newPos)
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{
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assert(_tf != 0);
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//updating the position at logical state
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_myKey->x = absolute2RelativeValf( newPos.x()-_chartInfo->leftBorder(), _chartInfo->chartWidth() );
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_myKey->y = 1.0f-absolute2RelativeValf( newPos.y()-_chartInfo->upperBorder(), _chartInfo->chartHeight() );
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//key changed... restoring correct order
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(*_tf)[this->getChannel()].updateKeysOrder();
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}
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void TFHandle::mousePressEvent(QGraphicsSceneMouseEvent *)
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{
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emit clicked(this);
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}
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void TFHandle::mouseDoubleClickEvent (QGraphicsSceneMouseEvent *event)
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{
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Q_UNUSED(event);
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emit doubleClicked(this);
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} |