worldview_component.hxx

   1 //  $Id: worldview_component.hxx,v 1.21 2003/07/28 22:46:48 grumbel Exp $
   2 //
   3 //  Construo - A wire-frame construction game
   4 //  Copyright (C) 2002 Ingo Ruhnke <grumbel@gmx.de>
   5 //
   6 //  This program is free software; you can redistribute it and/or
   7 //  modify it under the terms of the GNU General Public License
   8 //  as published by the Free Software Foundation; either version 2
   9 //  of the License, or (at your option) any later version.
  10 //
  11 //  This program is distributed in the hope that it will be useful,
  12 //  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 //  GNU General Public License for more details.
  15 //
  16 //  You should have received a copy of the GNU General Public License
  17 //  along with this program; if not, write to the Free Software
  18 //  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19
  20 #ifndef HEADER_WORLDVIEW_COMPONENT_HXX
  21 #define HEADER_WORLDVIEW_COMPONENT_HXX
  22
  23 #include "input_context.hxx"
  24 #include "zoom_graphic_context.hxx"
  25 #include "gui_component.hxx"
  26
  27 class Particle;
  28 class WorldViewTool;
  29 class WorldViewInsertTool;
  30 class WorldViewSelectTool;
  31 class WorldViewZoomTool;
  32 class WorldViewColliderTool;
  33
  34 /** GUI Component that manages the view and the editing of the
  35     world, this is the main component of Construo */
  36 class WorldViewComponent : public GUIComponent
  37 {
  38 public:
  39   enum Mode { INSERT_MODE, SELECT_MODE, ZOOM_MODE, COLLIDER_MODE };
  40
  41 private:
  42   Mode mode;
  43
  44   ZoomGraphicContext gc;
  45
  46   /** If set to true, display a grid and align dots to it */
  47   bool use_grid;
  48
  49   /** True if the third button is currently pressed and we are in
  50       scroll mode */
  51   bool scrolling;
  52
  53   float scroll_pos_x;
  54   float scroll_pos_y;
  55
  56   float x_offset;
  57   float y_offset;
  58
  59   /** If the user clicks in this component, the tool decides what to
  60       do */
  61   WorldViewTool*       current_tool;
  62   WorldViewSelectTool* select_tool;
  63   WorldViewInsertTool* insert_tool;
  64   WorldViewZoomTool*   zoom_tool;
  65   WorldViewColliderTool*   collider_tool;
  66
  67   static WorldViewComponent* instance_;
  68
  69   /** Draw the background grid to which new dots align */
  70   void draw_grid();
  71
  72   /** Draw ground, aka the all overspanning collider at the bottem */
  73   void draw_ground();
  74 public:
  75   void set_mode (Mode m);
  76   Mode get_mode () { return mode; }
  77
  78   WorldViewComponent ();
  79   ~WorldViewComponent ();
  80
  81   static inline WorldViewComponent* instance() { return instance_; }
  82
  83   WorldViewInsertTool* get_insert_tool() { return insert_tool; }
  84
  85   ZoomGraphicContext* get_gc () { return &gc; }
  86   void draw (GraphicContext* parent_gc);
  87
  88   bool uses_grid() const { return  use_grid; }
  89
  90   void on_primary_button_press (int x, int y);
  91   void on_primary_button_release (int x, int y);
  92
  93   void on_secondary_button_press (int x, int y);
  94   void on_secondary_button_release (int x, int y);
  95
  96   void on_tertiary_button_press (int x, int y);
  97   void on_tertiary_button_release (int x, int y);
  98
  99   void on_mouse_move (int x, int y, int of_x, int of_y);
 100
 101   void on_scale_press(int x, int y);
 102   void on_grid_press(int x, int y);
 103   void on_duplicate_press (int x, int y);
 104   void on_delete_press (int x, int y);
 105   void on_fix_press (int x, int y);
 106   void on_join_press (int x, int y);
 107
 108   void on_button_press (int button_id, int x, int y);
 109
 110   void wheel_up (int x, int y);
 111   void wheel_down (int x, int y);
 112
 113   void scroll_left ();
 114   void scroll_right ();
 115   void scroll_up ();
 116   void scroll_down ();
 117
 118   float get_zoom ();
 119
 120   /** Called once the world has changed, aka a new world got loaded */
 121   void on_world_change();
 122
 123   /** */
 124   bool is_at (int x, int y) { return true; }
 125 };
 126
 127 #endif
 128
 129 /* EOF */