source: orxonox.OLD/branches/gui/src/lib/gui/gl_gui/glgui_handler.cc @ 7892

/*
   orxonox - the future of 3D-vertical-scrollers

   Copyright (C) 2004 orx

   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, or (at your option)
   any later version.

   ### File Specific:
   main-programmer: Benjamin Grauer
   co-programmer: ...
*/

#define DEBUG_SPECIAL_MODULE DEBUG_MODULE_GUI

#include "glgui_handler.h"
#include "event_handler.h"

#include "glgui_mainwidget.h"
#include "glgui_cursor.h"

#include "class_list.h"


namespace OrxGui
{

  /**
   * standard constructor
   */
  GLGuiHandler::GLGuiHandler ()
  {
    this->setClassID(CL_GLGUI_HANDLER, "GLGuiHandler");
    this->setName("GLGuiHandler");


    this->cursor = NULL;
    for (unsigned int i = 0; i < EV_NUMBER; i++)
    {
      this->subscribeEvent(ES_MENU, i);
    }

  }

  /**
   *  the singleton reference to this class
   */
  GLGuiHandler* GLGuiHandler::singletonRef = NULL;

  /**
     @brief standard deconstructor
   */
  GLGuiHandler::~GLGuiHandler ()
  {
    GLGuiHandler::singletonRef = NULL;
  }

  void GLGuiHandler::activateCursor()
  {
    this->cursor = new GLGuiCursor();
    this->cursor->show();
  }

  void GLGuiHandler::deactivateCursor(bool deleteCursor)
  {
    if (this->cursor)
    {
      if (deleteCursor)
        delete this->cursor;
      this->cursor = NULL;
    }
  }


  void GLGuiHandler::activate()
  {
    EventHandler::getInstance()->pushState(ES_MENU);

  }

  void GLGuiHandler::deactivate()
  {
    EventHandler::getInstance()->popState();

  }


  void GLGuiHandler::process(const Event &event)
  {
    if (event.type == EV_MOUSE_BUTTON_LEFT)
    {

      if (GLGuiWidget::focused() != NULL)
      {
        if (event.bPressed)
        {
          GLGuiWidget::focused()->click();
        }
        else
          GLGuiWidget::focused()->release();
      }
    }

  }

  void GLGuiHandler::draw()
  {
//    GLGuiMainWidget::getInstance()->draw2D(E2D_LAYER_TOP);
  }


  void GLGuiHandler::tick(float dt)
  {

    // CHECK THE COLLISIONS.
    const std::list<BaseObject*>* objects = ClassList::getList(CL_GLGUI_WIDGET);

    if (objects != NULL && this->cursor != NULL)
    {
      for (std::list<BaseObject*>::const_iterator it = objects->begin(); it != objects->end(); it++)
      {
        GLGuiWidget* widget = dynamic_cast<GLGuiWidget*>(*it);

        if (widget->isVisible() &&
            widget->focusable() &&
            widget->focusOverWidget(this->cursor))
        {
          // receiving Focus
          if (GLGuiWidget::focused() != widget)
          {
            widget->giveFocus();
          }
          return ;
        }
      }
      if (GLGuiWidget::focused() != NULL)
        GLGuiWidget::focused()->breakFocus();
    }
  }
}