VariablePill.hh

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/*
 * Copyright (C) 2016 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 GAZEBO_GUI_PLOT_VARIABLE_PILL_HH_
#define GAZEBO_GUI_PLOT_VARIABLE_PILL_HH_

#include <map>
#include <memory>
#include <string>

#include <ignition/math/Helpers.hh>
#include <ignition/math/Vector2.hh>

#include "gazebo/gui/qt.h"
#include "gazebo/util/system.hh"

namespace gazebo
{
  namespace gui
  {
    // Forward declare private data class
    class VariablePillPrivate;

    class VariablePillContainer;

    class GZ_GUI_VISIBLE VariablePill : public QWidget
    {
      Q_OBJECT

      public: explicit VariablePill(QWidget *_parent = nullptr);

      public: virtual ~VariablePill();

      public: unsigned int Id() const;

      public: void SetName(const std::string &_name);

      public: std::string Name() const;

      public: void SetText(const std::string &_text);

      public: std::string Text() const;

      public: void SetParent(VariablePill *_parent);

      public: VariablePill *Parent() const;

      public: void SetContainer(VariablePillContainer *_container);

      public: VariablePillContainer *Container() const;

      public: void AddVariablePill(VariablePill *_variable);

      public: void RemoveVariablePill(VariablePill *_variable);

      public: VariablePill *VariablePillByName(const std::string &_name);

      public: unsigned int VariablePillCount() const;

      public: std::map<unsigned int, VariablePill *> &VariablePills() const;

      public: void SetSelected(const bool _selected);

      public: bool IsSelected() const;

      public: bool ContainsPoint(const ignition::math::Vector2i &_pt) const;

      protected: void dragEnterEvent(QDragEnterEvent *_evt);

      protected: void dropEvent(QDropEvent *_evt);

      protected: void mouseMoveEvent(QMouseEvent *_event);

      protected: void mousePressEvent(QMouseEvent *_event);

      private: void SetMultiVariableMode(const bool _enable);

      private: void UpdateStyleSheet();

      private: bool IsDragValid(QDropEvent *_evt);

      Q_SIGNALS: void VariableAdded(const unsigned int _id,
          const std::string &_name);

      Q_SIGNALS: void VariableRemoved(const unsigned int _id);

      Q_SIGNALS: void VariableMoved(const unsigned int _id);

      Q_SIGNALS: void VariableLabelChanged(const std::string &_label);

      public: static const unsigned int EmptyVariable;

      private: std::unique_ptr<VariablePillPrivate> dataPtr;
    };
  }
}
#endif