318 lines
9.2 KiB
C++
318 lines
9.2 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2012 Torsten Hueter, torstenhtr <at> gmx.de
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* Copyright (C) 2013 CERN
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* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (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 for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <wx/wx.h>
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#include <view/view.h>
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#include <view/wx_view_controls.h>
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#include <gal/graphics_abstraction_layer.h>
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#include <tool/tool_dispatcher.h>
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using namespace KIGFX;
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const wxEventType WX_VIEW_CONTROLS::EVT_REFRESH_MOUSE = wxNewEventType();
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WX_VIEW_CONTROLS::WX_VIEW_CONTROLS( VIEW* aView, wxWindow* aParentPanel ) :
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VIEW_CONTROLS( aView ),
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m_state( IDLE ),
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m_parentPanel( aParentPanel )
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{
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m_parentPanel->Connect( wxEVT_MOTION,
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wxMouseEventHandler( WX_VIEW_CONTROLS::onMotion ), NULL, this );
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m_parentPanel->Connect( wxEVT_MOUSEWHEEL,
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wxMouseEventHandler( WX_VIEW_CONTROLS::onWheel ), NULL, this );
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m_parentPanel->Connect( wxEVT_MIDDLE_UP,
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wxMouseEventHandler( WX_VIEW_CONTROLS::onButton ), NULL, this );
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m_parentPanel->Connect( wxEVT_MIDDLE_DOWN,
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wxMouseEventHandler( WX_VIEW_CONTROLS::onButton ), NULL, this );
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m_parentPanel->Connect( wxEVT_LEFT_UP,
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wxMouseEventHandler( WX_VIEW_CONTROLS::onButton ), NULL, this );
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m_parentPanel->Connect( wxEVT_LEFT_DOWN,
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wxMouseEventHandler( WX_VIEW_CONTROLS::onButton ), NULL, this );
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#if defined _WIN32 || defined _WIN64
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m_parentPanel->Connect( wxEVT_ENTER_WINDOW,
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wxMouseEventHandler( WX_VIEW_CONTROLS::onEnter ), NULL, this );
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#endif
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m_panTimer.SetOwner( this );
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this->Connect( wxEVT_TIMER,
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wxTimerEventHandler( WX_VIEW_CONTROLS::onTimer ), NULL, this );
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}
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void VIEW_CONTROLS::ShowCursor( bool aEnabled )
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{
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m_view->GetGAL()->SetCursorEnabled( aEnabled );
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}
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void WX_VIEW_CONTROLS::onMotion( wxMouseEvent& aEvent )
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{
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m_mousePosition.x = aEvent.GetX();
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m_mousePosition.y = aEvent.GetY();
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updateCursor();
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bool isAutoPanning = false;
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if( m_autoPanEnabled )
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isAutoPanning = handleAutoPanning( aEvent );
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if( !isAutoPanning && aEvent.Dragging() )
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{
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if( m_state == DRAG_PANNING )
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{
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VECTOR2D d = m_dragStartPoint - m_mousePosition;
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VECTOR2D delta = m_view->ToWorld( d, false );
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m_view->SetCenter( m_lookStartPoint + delta );
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aEvent.StopPropagation();
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}
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else
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{
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aEvent.Skip();
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}
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}
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}
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void WX_VIEW_CONTROLS::onWheel( wxMouseEvent& aEvent )
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{
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const double wheelPanSpeed = 0.001;
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if( aEvent.ControlDown() || aEvent.ShiftDown() )
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{
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// Scrolling
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VECTOR2D scrollVec = m_view->ToWorld( m_view->GetScreenPixelSize() *
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( (double) aEvent.GetWheelRotation() * wheelPanSpeed ), false );
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double scrollSpeed;
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if( abs( scrollVec.x ) > abs( scrollVec.y ) )
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scrollSpeed = scrollVec.x;
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else
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scrollSpeed = scrollVec.y;
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VECTOR2D delta( aEvent.ControlDown() ? -scrollSpeed : 0.0,
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aEvent.ShiftDown() ? -scrollSpeed : 0.0 );
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m_view->SetCenter( m_view->GetCenter() + delta );
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}
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else
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{
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// Zooming
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wxLongLong timeStamp = wxGetLocalTimeMillis();
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double timeDiff = timeStamp.ToDouble() - m_timeStamp.ToDouble();
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m_timeStamp = timeStamp;
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double zoomScale;
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// Set scaling speed depending on scroll wheel event interval
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if( timeDiff < 500 && timeDiff > 0 )
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{
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zoomScale = ( aEvent.GetWheelRotation() > 0.0 ) ? 2.05 - timeDiff / 500 :
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1.0 / ( 2.05 - timeDiff / 500 );
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}
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else
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{
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zoomScale = ( aEvent.GetWheelRotation() > 0.0 ) ? 1.05 : 0.95;
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}
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VECTOR2D anchor = m_view->ToWorld( VECTOR2D( aEvent.GetX(), aEvent.GetY() ) );
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m_view->SetScale( m_view->GetScale() * zoomScale, anchor );
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}
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aEvent.Skip();
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}
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void WX_VIEW_CONTROLS::onButton( wxMouseEvent& aEvent )
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{
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switch( m_state )
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{
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case IDLE:
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case AUTO_PANNING:
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if( aEvent.MiddleDown() )
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{
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m_dragStartPoint = VECTOR2D( aEvent.GetX(), aEvent.GetY() );
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m_lookStartPoint = m_view->GetCenter();
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m_state = DRAG_PANNING;
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}
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if( aEvent.LeftUp() )
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m_state = IDLE; // Stop autopanning when user release left mouse button
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break;
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case DRAG_PANNING:
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if( aEvent.MiddleUp() )
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m_state = IDLE;
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break;
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}
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aEvent.Skip();
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}
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void WX_VIEW_CONTROLS::onEnter( wxMouseEvent& aEvent )
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{
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m_parentPanel->SetFocus();
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}
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void WX_VIEW_CONTROLS::onTimer( wxTimerEvent& aEvent )
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{
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switch( m_state )
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{
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case AUTO_PANNING:
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{
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double borderSize = std::min( m_autoPanMargin * m_view->GetScreenPixelSize().x,
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m_autoPanMargin * m_view->GetScreenPixelSize().y );
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VECTOR2D dir( m_panDirection );
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if( dir.EuclideanNorm() > borderSize )
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dir = dir.Resize( borderSize );
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dir = m_view->ToWorld( dir, false );
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m_view->SetCenter( m_view->GetCenter() + dir * m_autoPanSpeed );
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updateCursor();
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// Notify tools that the cursor position has changed in the world coordinates
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wxMouseEvent moveEvent( EVT_REFRESH_MOUSE );
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// Set the modifiers state
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#if wxCHECK_VERSION( 3, 0, 0 )
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moveEvent.SetControlDown( wxGetKeyState( WXK_CONTROL ) );
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moveEvent.SetShiftDown( wxGetKeyState( WXK_SHIFT ) );
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moveEvent.SetAltDown( wxGetKeyState( WXK_ALT) );
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#else
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// wx <3.0 do not have accessors, but the fields are exposed
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moveEvent.m_controlDown = wxGetKeyState( WXK_CONTROL );
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moveEvent.m_shiftDown = wxGetKeyState( WXK_SHIFT );
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moveEvent.m_altDown = wxGetKeyState( WXK_ALT );
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#endif
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wxPostEvent( m_parentPanel, moveEvent );
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}
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break;
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case IDLE: // Just remove unnecessary warnings
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case DRAG_PANNING:
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break;
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}
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}
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void WX_VIEW_CONTROLS::SetGrabMouse( bool aEnabled )
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{
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m_grabMouse = aEnabled;
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if( aEnabled )
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m_parentPanel->CaptureMouse();
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else
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m_parentPanel->ReleaseMouse();
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}
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const VECTOR2D WX_VIEW_CONTROLS::GetMousePosition() const
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{
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wxPoint msp = wxGetMousePosition();
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wxPoint winp = m_parentPanel->GetScreenPosition();
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return VECTOR2D( msp.x - winp.x, msp.y - winp.y );
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}
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bool WX_VIEW_CONTROLS::handleAutoPanning( const wxMouseEvent& aEvent )
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{
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VECTOR2D p( aEvent.GetX(), aEvent.GetY() );
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// Compute areas where autopanning is active
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double borderStart = std::min( m_autoPanMargin * m_view->GetScreenPixelSize().x,
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m_autoPanMargin * m_view->GetScreenPixelSize().y );
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double borderEndX = m_view->GetScreenPixelSize().x - borderStart;
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double borderEndY = m_view->GetScreenPixelSize().y - borderStart;
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m_panDirection = VECTOR2D();
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if( p.x < borderStart )
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m_panDirection.x = -( borderStart - p.x );
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else if( p.x > borderEndX )
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m_panDirection.x = ( p.x - borderEndX );
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if( p.y < borderStart )
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m_panDirection.y = -( borderStart - p.y );
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else if( p.y > borderEndY )
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m_panDirection.y = ( p.y - borderEndY );
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bool borderHit = ( m_panDirection.x != 0 || m_panDirection.y != 0 );
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switch( m_state )
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{
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case AUTO_PANNING:
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if( !borderHit )
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{
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m_panTimer.Stop();
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m_state = IDLE;
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return false;
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}
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return true;
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break;
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case IDLE:
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if( borderHit )
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{
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m_state = AUTO_PANNING;
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m_panTimer.Start( (int) ( 1000.0 / 60.0 ) );
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return true;
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}
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return false;
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break;
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case DRAG_PANNING:
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return false;
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}
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wxASSERT_MSG( false, wxT( "This line should never be reached" ) );
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return false; // Should not be reached, just avoid the compiler warnings..
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}
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void WX_VIEW_CONTROLS::updateCursor()
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{
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if( m_forceCursorPosition )
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m_cursorPosition = m_view->ToScreen( m_forcedPosition );
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else if( m_snappingEnabled )
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m_cursorPosition = m_view->GetGAL()->GetGridPoint( m_mousePosition );
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else
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m_cursorPosition = m_mousePosition;
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}
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