114 lines
3.2 KiB
C++
114 lines
3.2 KiB
C++
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// -*- C++ -*-
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//
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// This file is part of the Coriolis Software.
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// Copyright (c) UPMC/LIP6 2008-2009, All Rights Reserved
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//
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// ===================================================================
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//
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// $Id$
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//
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// x-----------------------------------------------------------------x
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// | |
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// | H U R R I C A N E |
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// | V L S I B a c k e n d D a t a - B a s e |
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// | |
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// | Author : Jean-Paul CHAPUT |
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// | E-mail : Jean-Paul.Chaput@asim.lip6.fr |
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// | =============================================================== |
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// | C++ Module : "./ZoomCommand.cpp" |
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// | *************************************************************** |
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// | U p d a t e s |
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// | |
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// x-----------------------------------------------------------------x
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# include <QMouseEvent>
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# include <QKeyEvent>
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# include <hurricane/Warning.h>
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# include <hurricane/viewer/CellWidget.h>
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# include <hurricane/viewer/ZoomCommand.h>
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namespace Hurricane {
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// -------------------------------------------------------------------
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// Class : "ZoomCommand".
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ZoomCommand::ZoomCommand ()
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: AreaCommand()
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{ }
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ZoomCommand::~ZoomCommand ()
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{ }
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bool ZoomCommand::wheelEvent ( CellWidget* widget, QWheelEvent* event )
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{
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if ( event->delta() > 0 ) widget->setScale ( widget->getScale()/1.2 );
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else if ( event->delta() < 0 ) widget->setScale ( widget->getScale()*1.2 );
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event->accept ();
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return true;
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}
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bool ZoomCommand::keyPressEvent ( CellWidget* widget, QKeyEvent* event )
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{
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bool control = (event->modifiers() & Qt::ControlModifier);
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switch ( event->key() ) {
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case Qt::Key_Z:
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if ( control ) widget->scaleHistoryDown();
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else widget->setScale ( widget->getScale()*2.0 );
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return true;
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case Qt::Key_M:
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if ( control ) widget->scaleHistoryUp ();
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else widget->setScale ( widget->getScale()/2.0 );
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return true;
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}
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return false;
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}
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bool ZoomCommand::mousePressEvent ( CellWidget* widget, QMouseEvent* event )
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{
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if ( isActive() ) return true;
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if ( ( event->button() == Qt::LeftButton ) && !event->modifiers() ) {
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setActive ( true );
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setStartPoint ( event->pos() );
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setDrawingEnabled ( true );
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}
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return isActive();
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}
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bool ZoomCommand::mouseReleaseEvent ( CellWidget* widget, QMouseEvent* event )
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{
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if ( !isActive() ) return false;
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setActive ( false );
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setDrawingEnabled ( false );
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QRect zoomArea = QRect ( _startPoint, _stopPoint );
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if ( ( abs(zoomArea.width ()) > getDrawingThreshold() )
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&& ( abs(zoomArea.height()) > getDrawingThreshold() ) ) {
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widget->reframe ( widget->screenToDbuBox(zoomArea) );
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return true;
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} // else {
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// cerr << Warning("Rejecting too small zoom request.") << endl;
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// widget->update ();
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//}
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return false;
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}
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} // End of Hurricane namespace.
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