/*
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
*/

#ifndef _CAMWINDOW_H_
#define _CAMWINDOW_H_

class XYWnd;

#include "glwindow.h"

class rectangle_t
{
public:
  rectangle_t()
    : x(0), y(0), w(0), h(0)
  {}
  rectangle_t(float _x, float _y, float _w, float _h)
    : x(_x), y(_y), w(_w), h(_h)
  {}
  float x;
  float y;
  float w;
  float h;
};

class XORRectangle
{
public:
  XORRectangle(GtkWidget* widget)
    : m_widget(widget), m_gc(NULL)
  {}
  ~XORRectangle()
  {
    if(initialised())
      gdk_gc_unref(m_gc);
  }
  void set(rectangle_t rectangle)
  {
    lazy_init();
    draw();
    m_rectangle = rectangle;
    draw();
  }
private:
  bool initialised() const
  {
    return m_gc != NULL;
  }
  void lazy_init()
  {
    if(!initialised())
    {
      m_gc = gdk_gc_new(m_widget->window);

      GdkColor color = { 0, 0xffff, 0xffff, 0xffff, };
      GdkColormap* colormap = gdk_window_get_colormap(m_widget->window);
      gdk_colormap_alloc_color (colormap, &color, FALSE, TRUE);
      gdk_gc_copy(m_gc, m_widget->style->white_gc);
      gdk_gc_set_foreground(m_gc, &color);
      gdk_gc_set_background(m_gc, &color);

      gdk_gc_set_function(m_gc, GDK_XOR);
    }
  }
  void draw() const
  {
    const int x = (int)m_rectangle.x;
    const int y = (int)m_rectangle.y;
    const int w = (int)m_rectangle.w;
    const int h = (int)m_rectangle.h;
    gdk_draw_rectangle(m_widget->window, m_gc, TRUE, x, -(h) - (y - m_widget->allocation.height), w, h);
  }

  rectangle_t m_rectangle;

  GtkWidget* m_widget;
  GdkGC* m_gc;
};

class CamWnd : public GLWindow
{
public:
  void MatchViewAxes(const vec3_t P, const vec3_t vec, int &axis, float &sgn);
  void ReInitGL();
  void BenchMark();
  CamWnd();
  virtual ~CamWnd();
  camera_t *Camera(){return &m_Camera;};
  void Cam_MouseControl(float dtime);
  void Cam_ChangeFloor(qboolean up);
  void ToggleFreeMove();
  bool m_bFreeMove;

protected:
  void Cam_Init();
  void Cam_BuildMatrix();
  void Cam_PositionDrag();
  void Cam_KeyControl(float dtime);
  void Cam_MouseDown(int x, int y, int buttons);
  void Cam_MouseUp (int x, int y, int buttons);
  void Cam_MouseMoved (int x, int y, int buttons);
  void InitCull();
  qboolean CullBrush (brush_t *b);
  void Cam_Draw();
  void Cam_DrawStuff();
  void Cam_DrawBrushes(int mode);
  void Cam_DrawBrush(brush_t *b, int mode);

  brush_t* m_TransBrushes[MAX_MAP_BRUSHES];
  int m_nNumTransBrushes;
  camera_t m_Camera;
  int	m_nCambuttonstate;
  int m_ptButtonX;
  int m_ptCursorX;
  int m_ptLastCursorX;
  int m_ptLastCamCursorX;
  int m_ptButtonY;
  int m_ptCursorY;
  int m_ptLastCursorY;
  int m_ptLastCamCursorY;
  face_t* m_pSide_select;
  vec3_t m_vCull1;
  vec3_t m_vCull2;
  int m_nCullv1[3];
  int m_nCullv2[3];
  bool m_bClipMode;
  guint m_FocusOutHandler_id;

  void OnCreate ();
  void OnExpose ();
  void OnLButtonDown (guint32 flags, int x, int y);
  void OnRButtonDown (guint32 flags, int x, int y);
  void OnMButtonDown (guint32 flags, int x, int y);
  void OnLButtonUp (guint32 flags, int pointx, int pointy);
  void OnRButtonUp (guint32 flags, int pointx, int pointy);
  void OnMButtonUp (guint32 flags, int pointx, int pointy);
  void OnMouseMove (guint32 flags, int pointx, int pointy);
  void OnMouseWheel(bool bUp);
  void OnSize(int cx, int cy);

protected:
  void OriginalMouseDown (guint32 nFlags, int pointX, int pointY);
  void OriginalMouseUp (guint32 nFlags, int pointX, int pointY);

private:
  XORRectangle m_XORRectangle;

  // project a point in geometric space into camera space
  void ProjectCamera(const vec3_t A, vec_t B[2]);
};


#endif // _CAMWINDOW_H_