新增qwt源码版本
This commit is contained in:
feiyangqingyun
541
qwtdemo/qwt/qwt_picker_machine.cpp
Normal file
541
qwtdemo/qwt/qwt_picker_machine.cpp
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@@ -0,0 +1,541 @@
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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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* Qwt Widget Library
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 Uwe Rathmann
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the Qwt License, Version 1.0
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*****************************************************************************/
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#include "qwt_picker_machine.h"
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#include "qwt_event_pattern.h"
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#include <qevent.h>
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//! Constructor
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QwtPickerMachine::QwtPickerMachine( SelectionType type ):
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d_selectionType( type ),
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d_state( 0 )
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{
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}
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//! Destructor
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QwtPickerMachine::~QwtPickerMachine()
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{
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}
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//! Return the selection type
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QwtPickerMachine::SelectionType QwtPickerMachine::selectionType() const
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{
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return d_selectionType;
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}
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//! Return the current state
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int QwtPickerMachine::state() const
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{
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return d_state;
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}
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//! Change the current state
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void QwtPickerMachine::setState( int state )
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{
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d_state = state;
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}
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//! Set the current state to 0.
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void QwtPickerMachine::reset()
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{
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setState( 0 );
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}
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//! Constructor
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QwtPickerTrackerMachine::QwtPickerTrackerMachine():
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QwtPickerMachine( NoSelection )
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{
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}
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//! Transition
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QList<QwtPickerMachine::Command> QwtPickerTrackerMachine::transition(
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const QwtEventPattern &, const QEvent *e )
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{
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QList<QwtPickerMachine::Command> cmdList;
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switch ( e->type() )
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{
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case QEvent::Enter:
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case QEvent::MouseMove:
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{
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if ( state() == 0 )
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{
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cmdList += Begin;
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cmdList += Append;
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setState( 1 );
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}
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else
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{
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cmdList += Move;
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}
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break;
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}
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case QEvent::Leave:
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{
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cmdList += Remove;
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cmdList += End;
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setState( 0 );
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}
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default:
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break;
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}
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return cmdList;
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}
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//! Constructor
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QwtPickerClickPointMachine::QwtPickerClickPointMachine():
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QwtPickerMachine( PointSelection )
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{
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}
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//! Transition
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QList<QwtPickerMachine::Command> QwtPickerClickPointMachine::transition(
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const QwtEventPattern &eventPattern, const QEvent *event )
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{
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QList<QwtPickerMachine::Command> cmdList;
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switch ( event->type() )
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{
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case QEvent::MouseButtonPress:
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{
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if ( eventPattern.mouseMatch( QwtEventPattern::MouseSelect1,
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static_cast<const QMouseEvent *>( event ) ) )
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{
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cmdList += Begin;
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cmdList += Append;
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cmdList += End;
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}
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break;
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}
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case QEvent::KeyPress:
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{
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const QKeyEvent *keyEvent = static_cast<const QKeyEvent *> ( event );
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if ( eventPattern.keyMatch( QwtEventPattern::KeySelect1, keyEvent ) )
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{
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if ( !keyEvent->isAutoRepeat() )
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{
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cmdList += Begin;
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cmdList += Append;
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cmdList += End;
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}
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}
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break;
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}
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default:
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break;
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}
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return cmdList;
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}
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//! Constructor
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QwtPickerDragPointMachine::QwtPickerDragPointMachine():
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QwtPickerMachine( PointSelection )
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{
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}
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//! Transition
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QList<QwtPickerMachine::Command> QwtPickerDragPointMachine::transition(
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const QwtEventPattern &eventPattern, const QEvent *event )
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{
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QList<QwtPickerMachine::Command> cmdList;
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switch ( event->type() )
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{
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case QEvent::MouseButtonPress:
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{
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if ( eventPattern.mouseMatch( QwtEventPattern::MouseSelect1,
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static_cast<const QMouseEvent *>( event ) ) )
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{
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if ( state() == 0 )
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{
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cmdList += Begin;
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cmdList += Append;
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setState( 1 );
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}
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}
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break;
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}
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case QEvent::MouseMove:
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case QEvent::Wheel:
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{
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if ( state() != 0 )
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cmdList += Move;
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break;
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}
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case QEvent::MouseButtonRelease:
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{
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if ( state() != 0 )
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{
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cmdList += End;
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setState( 0 );
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}
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break;
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}
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case QEvent::KeyPress:
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{
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const QKeyEvent *keyEvent = static_cast<const QKeyEvent *> ( event );
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if ( eventPattern.keyMatch( QwtEventPattern::KeySelect1, keyEvent ) )
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{
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if ( !keyEvent->isAutoRepeat() )
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{
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if ( state() == 0 )
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{
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cmdList += Begin;
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cmdList += Append;
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setState( 1 );
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}
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else
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{
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cmdList += End;
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setState( 0 );
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}
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}
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}
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break;
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}
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default:
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break;
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}
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return cmdList;
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}
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//! Constructor
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QwtPickerClickRectMachine::QwtPickerClickRectMachine():
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QwtPickerMachine( RectSelection )
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{
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}
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//! Transition
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QList<QwtPickerMachine::Command> QwtPickerClickRectMachine::transition(
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const QwtEventPattern &eventPattern, const QEvent *event )
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{
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QList<QwtPickerMachine::Command> cmdList;
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switch ( event->type() )
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{
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case QEvent::MouseButtonPress:
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{
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if ( eventPattern.mouseMatch( QwtEventPattern::MouseSelect1,
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static_cast<const QMouseEvent *>( event ) ) )
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{
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switch ( state() )
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{
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case 0:
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{
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cmdList += Begin;
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cmdList += Append;
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setState( 1 );
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break;
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}
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case 1:
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{
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// Uh, strange we missed the MouseButtonRelease
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break;
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}
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default:
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{
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cmdList += End;
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setState( 0 );
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}
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}
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}
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break;
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}
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case QEvent::MouseMove:
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case QEvent::Wheel:
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{
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if ( state() != 0 )
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cmdList += Move;
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break;
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}
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case QEvent::MouseButtonRelease:
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{
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if ( eventPattern.mouseMatch( QwtEventPattern::MouseSelect1,
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static_cast<const QMouseEvent *>( event ) ) )
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{
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if ( state() == 1 )
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{
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cmdList += Append;
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setState( 2 );
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}
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}
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break;
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}
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case QEvent::KeyPress:
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{
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const QKeyEvent *keyEvent = static_cast<const QKeyEvent *> ( event );
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if ( eventPattern.keyMatch( QwtEventPattern::KeySelect1, keyEvent ) )
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{
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if ( !keyEvent->isAutoRepeat() )
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{
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if ( state() == 0 )
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{
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cmdList += Begin;
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cmdList += Append;
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setState( 1 );
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}
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else
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{
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if ( state() == 1 )
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{
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cmdList += Append;
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setState( 2 );
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}
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else if ( state() == 2 )
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{
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cmdList += End;
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setState( 0 );
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}
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}
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}
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}
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break;
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}
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default:
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break;
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}
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return cmdList;
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}
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//! Constructor
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QwtPickerDragRectMachine::QwtPickerDragRectMachine():
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QwtPickerMachine( RectSelection )
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{
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}
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//! Transition
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QList<QwtPickerMachine::Command> QwtPickerDragRectMachine::transition(
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const QwtEventPattern &eventPattern, const QEvent *event )
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{
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QList<QwtPickerMachine::Command> cmdList;
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switch ( event->type() )
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{
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case QEvent::MouseButtonPress:
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{
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if ( eventPattern.mouseMatch( QwtEventPattern::MouseSelect1,
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static_cast<const QMouseEvent *>( event ) ) )
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{
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if ( state() == 0 )
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{
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cmdList += Begin;
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cmdList += Append;
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cmdList += Append;
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setState( 2 );
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}
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}
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break;
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}
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case QEvent::MouseMove:
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case QEvent::Wheel:
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{
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if ( state() != 0 )
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cmdList += Move;
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break;
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}
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case QEvent::MouseButtonRelease:
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{
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if ( state() == 2 )
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{
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cmdList += End;
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setState( 0 );
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}
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break;
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}
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case QEvent::KeyPress:
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{
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if ( eventPattern.keyMatch( QwtEventPattern::KeySelect1,
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static_cast<const QKeyEvent *> ( event ) ) )
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{
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if ( state() == 0 )
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{
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cmdList += Begin;
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cmdList += Append;
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cmdList += Append;
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setState( 2 );
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}
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else
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{
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cmdList += End;
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setState( 0 );
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}
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}
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break;
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}
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default:
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break;
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}
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return cmdList;
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}
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//! Constructor
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QwtPickerPolygonMachine::QwtPickerPolygonMachine():
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QwtPickerMachine( PolygonSelection )
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{
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}
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//! Transition
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QList<QwtPickerMachine::Command> QwtPickerPolygonMachine::transition(
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const QwtEventPattern &eventPattern, const QEvent *event )
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{
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QList<QwtPickerMachine::Command> cmdList;
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switch ( event->type() )
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{
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case QEvent::MouseButtonPress:
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{
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if ( eventPattern.mouseMatch( QwtEventPattern::MouseSelect1,
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static_cast<const QMouseEvent *>( event ) ) )
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{
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if ( state() == 0 )
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{
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cmdList += Begin;
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cmdList += Append;
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cmdList += Append;
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setState( 1 );
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}
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else
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{
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cmdList += Append;
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}
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}
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if ( eventPattern.mouseMatch( QwtEventPattern::MouseSelect2,
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static_cast<const QMouseEvent *>( event ) ) )
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{
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if ( state() == 1 )
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{
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cmdList += End;
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setState( 0 );
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}
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}
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break;
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}
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case QEvent::MouseMove:
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case QEvent::Wheel:
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{
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if ( state() != 0 )
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cmdList += Move;
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break;
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}
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case QEvent::KeyPress:
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{
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const QKeyEvent *keyEvent = static_cast<const QKeyEvent *> ( event );
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if ( eventPattern.keyMatch( QwtEventPattern::KeySelect1, keyEvent ) )
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{
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if ( !keyEvent->isAutoRepeat() )
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{
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if ( state() == 0 )
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{
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cmdList += Begin;
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cmdList += Append;
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cmdList += Append;
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setState( 1 );
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}
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else
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{
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cmdList += Append;
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}
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}
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}
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else if ( eventPattern.keyMatch( QwtEventPattern::KeySelect2, keyEvent ) )
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{
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if ( !keyEvent->isAutoRepeat() )
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{
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if ( state() == 1 )
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{
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cmdList += End;
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setState( 0 );
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}
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}
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}
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break;
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}
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default:
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break;
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}
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return cmdList;
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}
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//! Constructor
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QwtPickerDragLineMachine::QwtPickerDragLineMachine():
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QwtPickerMachine( PolygonSelection )
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{
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}
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//! Transition
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QList<QwtPickerMachine::Command> QwtPickerDragLineMachine::transition(
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const QwtEventPattern &eventPattern, const QEvent *event )
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{
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QList<QwtPickerMachine::Command> cmdList;
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switch( event->type() )
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{
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case QEvent::MouseButtonPress:
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{
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if ( eventPattern.mouseMatch( QwtEventPattern::MouseSelect1,
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static_cast<const QMouseEvent *>( event ) ) )
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{
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if ( state() == 0 )
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{
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cmdList += Begin;
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cmdList += Append;
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cmdList += Append;
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setState( 1 );
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}
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}
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break;
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}
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case QEvent::KeyPress:
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{
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if ( eventPattern.keyMatch( QwtEventPattern::KeySelect1,
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static_cast<const QKeyEvent *> ( event ) ) )
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{
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if ( state() == 0 )
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{
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cmdList += Begin;
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cmdList += Append;
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cmdList += Append;
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setState( 1 );
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}
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else
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{
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cmdList += End;
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setState( 0 );
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}
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}
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break;
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}
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case QEvent::MouseMove:
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case QEvent::Wheel:
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{
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if ( state() != 0 )
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cmdList += Move;
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break;
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}
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case QEvent::MouseButtonRelease:
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{
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if ( state() != 0 )
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{
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cmdList += End;
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setState( 0 );
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}
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}
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default:
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break;
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}
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return cmdList;
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}
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