kicad/include/view/wx_view_controls.h

206 lines
6.8 KiB
C++

/*
* 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
* Copyright (C) 2020 KiCad Developers, see AUTHORS.txt for contributors.
*
* @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 <view/view_controls.h>
#include <memory>
namespace KIGFX
{
class ZOOM_CONTROLLER;
/**
* An 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 );
virtual ~WX_VIEW_CONTROLS();
/// Handler functions
void onWheel( wxMouseEvent& aEvent );
void onMotion( wxMouseEvent& aEvent );
#if wxCHECK_VERSION( 3, 1, 0 ) || defined( 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 );
void onCaptureLost( wxMouseEvent& WXUNUSED( aEvent ) );
/**
* Force the cursor to stay within the drawing panel area.
*
* @param aEnabled determines if the cursor should be captured.
*/
void CaptureCursor( bool aEnabled ) override;
///< @copydoc VIEW_CONTROLS::GetMousePosition()
VECTOR2D GetMousePosition( bool aWorldCoordinates = true ) const override;
using VIEW_CONTROLS::GetCursorPosition;
///< @copydoc VIEW_CONTROLS::GetCursorPosition()
VECTOR2D GetCursorPosition( bool aSnappingEnabled ) const override;
///< @copydoc VIEW_CONTROLS::GetRawCursorPosition()
VECTOR2D GetRawCursorPosition( bool aSnappingEnabled = true ) const override;
void SetCursorPosition( const VECTOR2D& aPosition, bool warpView,
bool aTriggeredByArrows, long aArrowCommand ) override;
///< @copydoc VIEW_CONTROLS::SetCrossHairCursorPosition()
void SetCrossHairCursorPosition( const VECTOR2D& aPosition, bool aWarpView ) override;
///< @copydoc VIEW_CONTROLS::CursorWarp()
void WarpCursor( const VECTOR2D& aPosition, bool aWorldCoordinates = false,
bool aWarpView = false ) override;
///< @copydoc VIEW_CONTROLS::CenterOnCursor()
void CenterOnCursor() const override;
///< Adjusts the scrollbars position to match the current viewport.
void UpdateScrollbars();
///< End any mouse drag action still in progress
void CancelDrag();
void ForceCursorPosition( bool aEnabled,
const VECTOR2D& aPosition = VECTOR2D( 0, 0 ) ) override;
///< Applies VIEW_CONTROLS settings from the program COMMON_SETTINGS
void LoadSettings() override;
///< 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.
DRAG_ZOOMING, ///< Zooming with mouse button pressed.
};
/**
* Compute 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 );
/**
* Limit the cursor position to within the canvas by warping it
*
* @param x Mouse position
* @param y Mouse position
*/
void handleCursorCapture( int x, int y );
/**
* Send an event to refresh mouse position.
*
* It is mostly used for notifying the tools that the cursor position in the world
* coordinates has changed, whereas the screen coordinates remained the same (e.g.
* frame edge autopanning).
*/
void refreshMouse();
/**
* Get the cursor position in the screen coordinates.
*/
wxPoint getMouseScreenPosition() const;
///< Current state of VIEW_CONTROLS.
STATE m_state;
///< Panel that is affected by VIEW_CONTROLS.
wxScrolledCanvas* m_parentPanel;
///< Store 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;
///< Timer responsible for handling autopanning.
wxTimer m_panTimer;
///< Ratio used for scaling world coordinates to scrollbar position.
VECTOR2D m_scrollScale;
///< Current scrollbar position.
VECTOR2I m_scrollPos;
///< The zoom scale when a drag zoom started.
double m_initialZoomScale;
///< The mouse position when a drag zoom started.
VECTOR2D m_zoomStartPoint;
#ifdef __WXGTK3__
///< Last event timestamp used to de-bounce mouse wheel.
long int m_lastTimestamp;
#endif
///< Current cursor position (world coordinates).
VECTOR2D m_cursorPos;
///< Flag deciding whether the cursor position should be calculated using the mouse position.
bool m_updateCursor;
///< A #ZOOM_CONTROLLER that determines zoom steps. This is platform-specific.
std::unique_ptr<ZOOM_CONTROLLER> m_zoomController;
};
} // namespace KIGFX
#endif