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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2012 Torsten Hueter, torstenhtr <at> gmx.de
* Copyright (C) 2013 CERN
* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/**
* @file wx_view_controls.h
* @brief WX_VIEW_CONTROLS class definition.
*/
#ifndef __WX_VIEW_CONTROLS_H
#define __WX_VIEW_CONTROLS_H
#include <wx/wx.h>
#include <wx/event.h>
#include <view/view_controls.h>
class EDA_DRAW_PANEL_GAL;
namespace KIGFX
{
/**
* Class WX_VIEW_CONTROLS
* is a specific implementation of class VIEW_CONTROLS for wxWidgets library.
*/
class WX_VIEW_CONTROLS : public VIEW_CONTROLS, public wxEvtHandler
{
public:
WX_VIEW_CONTROLS( VIEW* aView, wxScrolledCanvas* aParentPanel );
~WX_VIEW_CONTROLS()
{}
/// Handler functions
void onWheel( wxMouseEvent& aEvent );
void onMotion( wxMouseEvent& aEvent );
#ifdef USE_OSX_MAGNIFY_EVENT
void onMagnify( wxMouseEvent& aEvent );
#endif
void onButton( wxMouseEvent& aEvent );
void onEnter( wxMouseEvent& WXUNUSED( aEvent ) );
void onLeave( wxMouseEvent& WXUNUSED( aEvent ) );
void onTimer( wxTimerEvent& WXUNUSED( aEvent ) );
void onScroll( wxScrollWinEvent& aEvent );
/**
* Function SetGrabMouse()
* Enables/disables mouse cursor grabbing (limits the movement field only to the panel area).
*
* @param aEnabled says whether the option should be enabled or disabled.
*/
void SetGrabMouse( bool aEnabled );
/**
* Function SetAutoPan()
* Enables/disables autopanning (panning when mouse cursor reaches the panel border).
*
* @param aEnabled says whether the option should enabled or disabled.
*/
void SetAutoPan( bool aEnabled )
{
m_autoPanEnabled = aEnabled;
if( m_state == AUTO_PANNING )
m_state = IDLE;
}
/// @copydoc VIEW_CONTROLS::GetMousePosition()
VECTOR2I GetMousePosition() const;
/// @copydoc VIEW_CONTROLS::GetCursorPosition()
VECTOR2D GetCursorPosition() const;
/// @copydoc VIEW_CONTROLS::CursorWarp()
void WarpCursor( const VECTOR2D& aPosition, bool aWorldCoordinates = false,
bool aWarpView = false ) const;
/// @copydoc VIEW_CONTROLS::CenterOnCursor()
void CenterOnCursor() const;
/// Adjusts the scrollbars position to match the current viewport.
void UpdateScrollbars();
/// Event that forces mouse move event in the dispatcher (eg. used in autopanning, when mouse
/// cursor does not move in screen coordinates, but does in world coordinates)
static const wxEventType EVT_REFRESH_MOUSE;
private:
/// Possible states for WX_VIEW_CONTROLS
enum STATE
{
IDLE = 1, /// Nothing is happening
DRAG_PANNING, /// Panning with mouse button pressed
AUTO_PANNING, /// Panning on approaching borders of the frame
};
/**
* Function handleAutoPanning()
* Computes new viewport settings while in autopanning mode.
*
* @param aEvent is an event to be processed and decide if autopanning should happen.
* @return true if it is currently autopanning (ie. autopanning is active and mouse cursor
* is in the area that causes autopanning to happen).
*/
bool handleAutoPanning( const wxMouseEvent& aEvent );
/// Current state of VIEW_CONTROLS
STATE m_state;
/// Panel that is affected by VIEW_CONTROLS
wxScrolledCanvas* m_parentPanel;
/// Stores information about point where dragging has started
VECTOR2D m_dragStartPoint;
/// Stores information about the center of viewport when dragging has started
VECTOR2D m_lookStartPoint;
/// Current direction of panning (only autopanning mode)
VECTOR2D m_panDirection;
/// Used for determining time intervals between scroll & zoom events
wxLongLong m_timeStamp;
/// Timer repsonsible for handling autopanning
wxTimer m_panTimer;
/// Ratio used for scaling world coordinates to scrollbar position.
VECTOR2D m_scrollScale;
};
} // namespace KIGFX
#endif
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