GUIOverlay.hh

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/*
 * Copyright (C) 2012-2014 Open Source Robotics Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
*/

#ifndef _GUI_OVERLAY_HH_
#define _GUI_OVERLAY_HH_

#include <string>
#include <map>

#include "gazebo/common/MouseEvent.hh"

#include "gazebo/math/Vector2d.hh"

#include "gazebo/rendering/cegui.h"
#include "gazebo/rendering/RenderTypes.hh"

namespace Ogre
{
  class RenderTarget;
}

#ifdef HAVE_CEGUI
namespace CEGUI
{
  class OgreRenderer;
  class Window;
}
#endif

namespace gazebo
{
  namespace rendering
  {
    class GUIOverlayPrivate;


    class GUIOverlay
    {
      public: GUIOverlay();

      public: virtual ~GUIOverlay();

      public: void Init(Ogre::RenderTarget *_renderTarget);

      public: void Hide();

      public: void Show();

      public: void Update();

      public: bool IsInitialized();

      public: void CreateWindow(const std::string &_type,
                                const std::string &_name,
                                const std::string &_parent,
                                const math::Vector2d &_position,
                                const math::Vector2d &_size,
                                const std::string &_text);

      public: bool HandleMouseEvent(const common::MouseEvent &_evt);

      public: bool HandleKeyPressEvent(const std::string &_key);

      public: bool HandleKeyReleaseEvent(const std::string &_key);

      public: void LoadLayout(const std::string &_filename);

      public: bool AttachCameraToImage(CameraPtr &_camera,
                                       const std::string &_windowName);

      public: bool AttachCameraToImage(DepthCameraPtr &_camera,
                                       const std::string &_windowName);

      public: void Resize(unsigned int _width, unsigned int _height);

      private: void PreRender();

      private: int GetKeyCode(const std::string  &_unicode);

#ifdef HAVE_CEGUI
      public: CEGUI::Window *GetWindow(const std::string &_name);

      private: CEGUI::Window *LoadLayoutImpl(const std::string &_filename);

      private: bool OnButtonClicked(const CEGUI::EventArgs &_e);
#endif

      public: template<typename T>
              void ButtonCallback(const std::string &_buttonName,
                                   void (T::*_fp)(), T *_obj)
              {
#ifdef HAVE_CEGUI
                CEGUI::Window *buttonWindow;
                buttonWindow =
                  CEGUI::WindowManager::getSingletonPtr()->getWindow(
                      _buttonName);
                buttonWindow->subscribeEvent(CEGUI::PushButton::EventClicked,
                  CEGUI::Event::Subscriber(&GUIOverlay::OnButtonClicked, this));

                this->callbacks[_buttonName] = boost::bind(_fp, _obj);
#else
                if (_buttonName && _fp && _obj)
                {
                  gzerr << "CEGUI not installed." << std::endl;
                }
#endif
              }

      public: std::map<std::string, boost::function<void()> > callbacks;

      private: GUIOverlayPrivate *dataPtr;
    };
  }
}
#endif