/*
Copyright (C) 1999-2007 id Software, Inc. and contributors.
For a list of contributors, see the accompanying CONTRIBUTORS file.

This file is part of GtkRadiant.

GtkRadiant 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.

GtkRadiant 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 GtkRadiant; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

//-----------------------------------------------------------------------------
//
// DESCRIPTION:
// a class to provide basic services for 2D view of a world
// window <-> local 2D space transforms
// snap to grid
// TODO: this one could be placed under an interface, and provided to the editor as a service

#ifndef _2DVIEW_H_
#define _2DVIEW_H_

class C2DView
{
  enum		E2DViewState { View_Idle, View_Move } ViewState;
  int			m_xPosMove, m_yPosMove;
  float		m_MinsMove[2], m_MaxsMove[2];
  qboolean	m_bDoGrid;
  float		m_GridStep[2];
  qboolean m_bPopup;
public:
  RECT m_rect;
  float m_Mins[2],m_Maxs[2],m_Center[2];
  C2DView()
    {
      ViewState = View_Idle; 
      m_bDoGrid = false;
      m_bPopup = false;
    }
  ~C2DView() { }
  void SetGrid( float xGridStep, float yGridStep )
    {	m_bDoGrid = true; m_GridStep[0] = xGridStep; m_GridStep[1] = yGridStep;	}

  // get window coordinates for space coordinates
  void WindowForSpace( int &x, int &y, const float c[2]);
  void SpaceForWindow( float c[2], int x, int y);
  void GridForWindow( float c[2], int x, int y);
  qboolean DoesSelect( int x, int y, float c[2] );
  void PreparePaint();

  bool OnRButtonDown (int x, int y);
  bool OnMouseMove (int x, int y);
  bool OnRButtonUp (int x, int y);
  bool OnKeyDown (char *s);

  void ZoomIn();
  void ZoomOut();
};

#endif