worldview_zoom_tool.cxx

   1 //  $Id: worldview_zoom_tool.cxx,v 1.6 2003/07/24 10:10:02 grumbel Exp $
   2 //
   3 //  Construo - A wire-frame construction gamee
   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 #include "colors.hxx"
  21 #include "construo.hxx"
  22 #include "input_context.hxx"
  23 #include "math.hxx"
  24 #include "worldview_component.hxx"
  25 #include "worldview_zoom_tool.hxx"
  26
  27 WorldViewZoomTool::WorldViewZoomTool ()
  28 {
  29   creating_zoom_rectangle = false;
  30 }
  31
  32 WorldViewZoomTool::~WorldViewZoomTool ()
  33 {
  34 }
  35
  36 void
  37 WorldViewZoomTool::activate ()
  38 {
  39   creating_zoom_rectangle = false;
  40 }
  41
  42 void
  43 WorldViewZoomTool::draw_foreground (ZoomGraphicContext* gc)
  44 {
  45   if (creating_zoom_rectangle)
  46     {
  47       float x = WorldViewComponent::instance()->get_gc()->screen_to_world_x (input_context->get_mouse_x ());
  48       float y = WorldViewComponent::instance()->get_gc()->screen_to_world_y (input_context->get_mouse_y ());
  49
  50       gc->draw_rect (Math::min(x, click_pos.x),
  51                      Math::min(y, click_pos.y),
  52                      Math::max(x, click_pos.x),
  53                      Math::max(y, click_pos.y),
  54                      Colors::new_spring);
  55     }
  56 }
  57
  58 void
  59 WorldViewZoomTool::on_primary_button_press (int screen_x, int screen_y)
  60 {
  61   creating_zoom_rectangle = true;
  62   click_pos.x = WorldViewComponent::instance()->get_gc()->screen_to_world_x (screen_x);
  63   click_pos.y = WorldViewComponent::instance()->get_gc()->screen_to_world_y (screen_y);
  64 }
  65
  66 void
  67 WorldViewZoomTool::on_primary_button_release (int screen_x, int screen_y)
  68 {
  69   creating_zoom_rectangle = false;
  70
  71   float x = WorldViewComponent::instance()->get_gc()->screen_to_world_x (screen_x);
  72   float y = WorldViewComponent::instance()->get_gc()->screen_to_world_y (screen_y);
  73
  74   WorldViewComponent::instance()->get_gc()->zoom_to((int)Math::min(x, click_pos.x),
  75                                                     (int)Math::min(y, click_pos.y),
  76                                                     (int)Math::max(x, click_pos.x),
  77                                                     (int)Math::max(y, click_pos.y));
  78 }
  79
  80 void
  81 WorldViewZoomTool::on_secondary_button_press (int x, int y)
  82 {
  83   WorldViewComponent::instance()->get_gc()->zoom_out(x, y);
  84 }
  85
  86 void
  87 WorldViewZoomTool::on_secondary_button_release (int x, int y)
  88 {
  89
  90 }
  91
  92 /* EOF */