492 lines
15 KiB
C++
492 lines
15 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) 2013-2015 CERN
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* Copyright (C) 2012-2016 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
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* @author Maciej Suminski <maciej.suminski@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, wxScrolledCanvas* aParentPanel ) :
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VIEW_CONTROLS( aView ), m_state( IDLE ), m_parentPanel( aParentPanel ), m_scrollScale( 1.0, 1.0 )
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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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#if wxCHECK_VERSION( 3, 1, 0 ) || defined( USE_OSX_MAGNIFY_EVENT )
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m_parentPanel->Connect( wxEVT_MAGNIFY,
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wxMouseEventHandler( WX_VIEW_CONTROLS::onMagnify ), NULL, this );
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#endif
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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_parentPanel->Connect( wxEVT_LEAVE_WINDOW,
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wxMouseEventHandler( WX_VIEW_CONTROLS::onLeave ), NULL, this );
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m_parentPanel->Connect( wxEVT_SCROLLWIN_THUMBTRACK,
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wxScrollWinEventHandler( WX_VIEW_CONTROLS::onScroll ), NULL, this );
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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 WX_VIEW_CONTROLS::onMotion( wxMouseEvent& aEvent )
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{
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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 - VECTOR2D( aEvent.GetX(), aEvent.GetY() );
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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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}
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aEvent.Skip();
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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() || m_enableMousewheelPan )
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{
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// Scrolling
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VECTOR2D scrollVec = m_view->ToWorld( m_view->GetScreenPixelSize(), false ) *
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( (double) aEvent.GetWheelRotation() * wheelPanSpeed );
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int axis = aEvent.GetWheelAxis();
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double scrollX = 0.0;
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double scrollY = 0.0;
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if ( m_enableMousewheelPan )
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{
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if ( axis == wxMOUSE_WHEEL_HORIZONTAL )
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scrollX = scrollVec.x;
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else
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scrollY = -scrollVec.y;
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}
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else
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{
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if ( aEvent.ControlDown() )
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scrollX = -scrollVec.x;
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else
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scrollY = -scrollVec.y;
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}
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VECTOR2D delta( scrollX, scrollY );
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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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int rotation = aEvent.GetWheelRotation();
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double zoomScale;
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#ifdef __WXMAC__
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// The following is to support Apple pointer devices (MagicMouse &
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// Macbook touchpad), which send events more frequently, but with smaller
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// wheel rotation.
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//
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// It should not break other platforms, but I prefer to be safe than
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// sorry. If you find a device that behaves in the same way on another
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// platform, feel free to remove #ifdef directives.
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if( timeDiff > 0 && timeDiff < 100 && std::abs( rotation ) < 20 )
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{
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aEvent.Skip();
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return;
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}
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#endif
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m_timeStamp = timeStamp;
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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 = 2.05 - timeDiff / 500;
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if( rotation < 0 )
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zoomScale = 1.0 / zoomScale;
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}
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else
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{
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zoomScale = ( rotation > 0 ) ? 1.05 : 0.95;
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}
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if( IsCursorWarpingEnabled() )
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{
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CenterOnCursor();
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m_view->SetScale( m_view->GetScale() * zoomScale );
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}
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else
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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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}
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aEvent.Skip();
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}
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#if wxCHECK_VERSION( 3, 1, 0 ) || defined( USE_OSX_MAGNIFY_EVENT )
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void WX_VIEW_CONTROLS::onMagnify( wxMouseEvent& aEvent )
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{
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// Scale based on the magnification from our underlying magnification event.
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VECTOR2D anchor = m_view->ToWorld( VECTOR2D( aEvent.GetX(), aEvent.GetY() ) );
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m_view->SetScale( m_view->GetScale() * ( aEvent.GetMagnification() + 1.0f ), anchor );
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aEvent.Skip();
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}
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#endif
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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::onLeave( wxMouseEvent& aEvent )
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{
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if( m_cursorCaptured )
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{
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bool warp = false;
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int x = aEvent.GetX();
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int y = aEvent.GetY();
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wxSize parentSize = m_parentPanel->GetClientSize();
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if( x < 0 )
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{
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x = 0;
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warp = true;
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}
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else if( x >= parentSize.x )
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{
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x = parentSize.x - 1;
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warp = true;
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}
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if( y < 0 )
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{
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y = 0;
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warp = true;
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}
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else if( y >= parentSize.y )
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{
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y = parentSize.y - 1;
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warp = true;
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}
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if( warp )
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m_parentPanel->WarpPointer( x, y );
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}
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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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#if wxCHECK_VERSION( 3, 0, 0 )
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if( !m_parentPanel->HasFocus() )
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break;
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#endif
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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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// 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::onScroll( wxScrollWinEvent& aEvent )
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{
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VECTOR2D center = m_view->GetCenter();
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const BOX2I& boundary = m_view->GetBoundary();
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if( aEvent.GetOrientation() == wxHORIZONTAL )
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center.x = (double) aEvent.GetPosition() * boundary.GetWidth() / m_scrollScale.x + boundary.GetLeft();
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else if( aEvent.GetOrientation() == wxVERTICAL )
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center.y = (double) aEvent.GetPosition() * boundary.GetHeight() / m_scrollScale.y + boundary.GetTop();
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m_view->SetCenter( center );
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m_parentPanel->Refresh();
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}
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void WX_VIEW_CONTROLS::SetGrabMouse( bool aEnabled )
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{
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if( aEnabled && !m_grabMouse )
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m_parentPanel->CaptureMouse();
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else if( !aEnabled && m_grabMouse )
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m_parentPanel->ReleaseMouse();
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VIEW_CONTROLS::SetGrabMouse( aEnabled );
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}
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VECTOR2I 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 VECTOR2I( msp.x - winp.x, msp.y - winp.y );
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}
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VECTOR2D WX_VIEW_CONTROLS::GetCursorPosition() const
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{
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if( m_forceCursorPosition )
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{
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return m_forcedPosition;
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}
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else
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{
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VECTOR2D mousePosition = GetMousePosition();
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if( m_snappingEnabled )
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return m_view->GetGAL()->GetGridPoint( m_view->ToWorld( mousePosition ) );
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else
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return m_view->ToWorld( mousePosition );
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}
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}
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void WX_VIEW_CONTROLS::WarpCursor( const VECTOR2D& aPosition, bool aWorldCoordinates,
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bool aWarpView ) const
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{
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if( aWorldCoordinates )
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{
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const VECTOR2I& screenSize = m_view->GetGAL()->GetScreenPixelSize();
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BOX2I screen( VECTOR2I( 0, 0 ), screenSize );
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VECTOR2D screenPos = m_view->ToScreen( aPosition );
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if( !screen.Contains( screenPos ) )
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{
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if( aWarpView )
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{
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m_view->SetCenter( aPosition );
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m_parentPanel->WarpPointer( screenSize.x / 2, screenSize.y / 2 );
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}
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}
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else
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{
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m_parentPanel->WarpPointer( screenPos.x, screenPos.y );
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}
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}
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else
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{
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m_parentPanel->WarpPointer( aPosition.x, aPosition.y );
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}
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}
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void WX_VIEW_CONTROLS::CenterOnCursor() const
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{
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const VECTOR2I& screenSize = m_view->GetGAL()->GetScreenPixelSize();
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VECTOR2I screenCenter( screenSize / 2 );
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if( GetMousePosition() != screenCenter )
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{
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m_view->SetCenter( GetCursorPosition() );
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m_parentPanel->WarpPointer( KiROUND( screenSize.x / 2 ), KiROUND( screenSize.y / 2 ) );
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}
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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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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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else
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m_panDirection.x = 0;
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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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else
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m_panDirection.y = 0;
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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) ( 250.0 / 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::UpdateScrollbars()
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{
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const BOX2D viewport = m_view->GetViewport();
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const BOX2I& boundary = m_view->GetBoundary();
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m_scrollScale.x = 2e3 * boundary.GetWidth() / viewport.GetWidth();
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m_scrollScale.y = 2e3 * boundary.GetHeight() / viewport.GetHeight();
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// Another example of wxWidgets being broken by design: scroll position is determined by the
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// left (or top, if vertical) edge of the slider. Fortunately, slider size seems to be constant
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// (at least for wxGTK 3.0), so we have to add its size to allow user to scroll the workspace
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// till the end.
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m_parentPanel->SetScrollbars( 1, 1,
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#ifdef __LINUX__
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m_scrollScale.x + 1623, m_scrollScale.y + 1623,
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#else
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m_scrollScale.x, m_scrollScale.y,
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#endif
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( viewport.Centre().x - boundary.GetLeft() ) / boundary.GetWidth() * m_scrollScale.x,
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( viewport.Centre().y - boundary.GetTop() ) / boundary.GetHeight() * m_scrollScale.y );
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}
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