/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2004 Jean-Pierre Charras, jp.charras at wanadoo.fr
 * Copyright (C) 2011 Wayne Stambaugh <stambaughw@verizon.net>
 * Copyright (C) 1992-2011 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * 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 3d_viewer.h
 */

#ifndef __3D_VIEWER_H__
#define __3D_VIEWER_H__

#include <wxBasePcbFrame.h>         // for m_auimanager member.
#include <layers_id_colors_and_visibility.h>    // Layers id definitions
#include <PolyLine.h>                // fot CPolyPt

#if !wxUSE_GLCANVAS
#error Please set wxUSE_GLCANVAS to 1 in setup.h.
#endif

#include <wx/glcanvas.h>

#ifdef __WXMAC__
#  ifdef __DARWIN__
#    include <OpenGL/glu.h>
#  else
#    include <glu.h>
#  endif
#else
#  include <GL/glu.h>
#endif

#include <3d_struct.h>


class BOARD_DESIGN_SETTINGS;
class TRACK;
class TEXTE_PCB;
class DRAWSEGMENT;
class ZONE_CONTAINER;


#define KICAD_DEFAULT_3D_DRAWFRAME_STYLE wxDEFAULT_FRAME_STYLE | wxWANTS_CHARS

#define LIB3D_PATH wxT( "packages3d" )

class EDA_3D_FRAME;
class S3D_VERTEX;
class SEGVIA;



class EDA_3D_CANVAS : public wxGLCanvas
{
private:
    bool            m_init;
    GLuint          m_gllist;
    /// Tracks whether to use Orthographic or Perspective projection
    //  TODO: Does this belong here, or in  EDA_3D_FRAME ???
    bool            m_ortho;
    wxGLContext*    m_glRC;
    wxRealPoint     m_draw3dOffset;     // offset to draw the 3 mesh.
    double          m_ZBottom;          // position of the back layer
    double          m_ZTop;             // position of the front layer


public:
    EDA_3D_CANVAS( EDA_3D_FRAME* parent, int* attribList = 0 );
    ~EDA_3D_CANVAS();

    EDA_3D_FRAME*   Parent() { return (EDA_3D_FRAME*)GetParent(); }

    void   ClearLists();

    // Event functions:
    void   OnPaint( wxPaintEvent& event );
    void   OnEraseBackground( wxEraseEvent& event );
    void   OnChar( wxKeyEvent& event );
    void   OnMouseWheel( wxMouseEvent& event );
    void   OnMouseMove( wxMouseEvent& event );
    void   OnRightClick( wxMouseEvent& event );
    void   OnPopUpMenu( wxCommandEvent& event );
    void   TakeScreenshot( wxCommandEvent& event );
    void   OnEnterWindow( wxMouseEvent& event );

    // Display functions
    GLuint DisplayCubeforTest();        // Just a test function
    void   SetView3D( int keycode );
    void   DisplayStatus();
    void   Redraw( bool finish = false );
    void   Render();

    /**
     * Function CreateDrawGL_List
     * creates the OpenGL draw list items.
     */
    GLuint CreateDrawGL_List();
    void   InitGL();
    void   SetLights();
    void   SetOffset(double aPosX, double aPosY)
    {
        m_draw3dOffset.x = aPosX;
        m_draw3dOffset.y = aPosY;
    }

    void   DrawGrid( double aGriSizeMM );

    /**
     * Function Draw3D_Track
     * @param aTrack = the aTrack to draw
    */
    void   Draw3D_Track( TRACK* aTrack );

    /**
     * Function Draw3D_Via
     * draws 3D via as a cylinder and filled circles.
     */
    void   Draw3D_Via( SEGVIA* via );

    /**
     * Function Draw3D_DrawSegment
     * draws a 3D segment (line, arc or circle).
     */
    void   Draw3D_DrawSegment( DRAWSEGMENT* segment );

    /**
     * Function Draw3D_Zone
     * draw all solid areas in aZone
     * @param aZone = the zone to draw
    */
    void Draw3D_Zone( ZONE_CONTAINER* aZone );

    /**
     * Function Draw3D_DrawText
     * draws 3D segments to create text objects.
     * When DrawGraphicText is called to draw a text to an OpenGL DC
     * it calls Draw3dTextSegm to each segment to draw.
     * 2 parameters used by Draw3D_FilledSegment are not handled by DrawGraphicText
     * but are used in Draw3D_FilledSegment().
     * they are 2 local variables. This is an ugly, but trivial code.
     * Using DrawGraphicText to draw all texts ensure texts have the same shape
     * in all contexts
     */
    void   Draw3D_DrawText( TEXTE_PCB* text );

    /// Toggles orthographic projection on and off
    void ToggleOrtho(){ m_ortho = !m_ortho ; Refresh(true);};

    /// Returns the orthographic projection flag
    bool ModeIsOrtho() { return m_ortho ;};


    //int Get3DLayerEnable(int act_layer);

    DECLARE_EVENT_TABLE()
};


class EDA_3D_FRAME : public wxFrame
{
private:
    wxString        m_FrameName;        // name used for writing and reading setup. It is "Frame3D"
    EDA_3D_CANVAS*  m_Canvas;
    wxAuiToolBar*   m_HToolBar;
    wxAuiToolBar*   m_VToolBar;
    wxPoint         m_FramePos;
    wxSize          m_FrameSize;
    wxAuiManager    m_auimgr;
    bool            m_reloadRequest;
    wxString        m_defaultFileName;  /// Filename to propose for screenshot

public:
    EDA_3D_FRAME( PCB_BASE_FRAME* parent, const wxString& title,
                  long style = KICAD_DEFAULT_3D_DRAWFRAME_STYLE );
    ~EDA_3D_FRAME()
    {
        m_auimgr.UnInit();
    };

    PCB_BASE_FRAME* Parent() { return (PCB_BASE_FRAME*)GetParent(); }

    /**
     * Function ReloadRequest
     * must be called when reloading data from Pcbnew is needed
     * mainly after edition of the board or footprint being displayed.
     * mainly for the module editor.
     */
    void ReloadRequest( )
    {
        m_reloadRequest = true;
    }

    /**
     * Function NewDisplay
     * Rebuild the display list.
     * must be called when 3D opengl data is modified
     */
    void NewDisplay();

    void SetDefaultFileName(const wxString &aFn) { m_defaultFileName = aFn; }
    const wxString &GetDefaultFileName() const { return m_defaultFileName; }
private:
    void Exit3DFrame( wxCommandEvent& event );
    void OnCloseWindow( wxCloseEvent& Event );
    void ReCreateMenuBar();
    void ReCreateHToolbar();
    void ReCreateVToolbar();
    void SetToolbars();
    void GetSettings();
    void SaveSettings();

    void OnLeftClick( wxDC* DC, const wxPoint& MousePos );
    void OnRightClick( const wxPoint& MousePos, wxMenu* PopMenu );
    void OnKeyEvent( wxKeyEvent& event );
    double BestZoom();
    void RedrawActiveWindow( wxDC* DC, bool EraseBg );
    void Process_Special_Functions( wxCommandEvent& event );
    void On3DGridSelection( wxCommandEvent& event );
    void Process_Zoom( wxCommandEvent& event );
    void OnActivate( wxActivateEvent& event );

    void Set3DBgColor();

    DECLARE_EVENT_TABLE()
};

#endif  /*  __3D_VIEWER_H__ */
