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 /* This file is part of the TikZKit project.
  *
  * Copyright (C) 2013-2014 Dominik Haumann <dhaumann@kde.org>
  *
  * This library is free software; you can redistribute it and/or modify
  * it under the terms of the GNU Library General Public License as published
  * by the Free Software Foundation, either version 2 of the License, or
  * (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, see
  * <http://www.gnu.org/licenses/>.
  */
 
 #ifndef TIKZ_UI_RENDERER_H
 #define TIKZ_UI_RENDERER_H
 
 #include <QGraphicsView>
 
 #include "tikzui_export.h"
 
 #include <tikz/core/Value.h>
 #include <tikz/core/Pos.h>
 
 namespace tikz {
 namespace ui {
 
 class DocumentPrivate;
 class Ruler;
 class Grid;
 class ZoomController;
 
 class Renderer : public QGraphicsView
 {
     Q_OBJECT
 
     public:
         /**
          * Constructor.
          */
         Renderer(DocumentPrivate * document = nullptr, QWidget * parent = nullptr);
 
         /**
          * Destructor.
          */
         virtual ~Renderer();
 
         /**
          * Returns the associated tikz Document.
          */
         DocumentPrivate * document() const;
 
         /**
          * Snap @p value to the grid.
          */
         tikz::Value snapValue(const tikz::Value & value) const;
 
         /**
          * Snap x/y components of @p pos to the grid.
          */
         tikz::Pos snapPos(const tikz::Pos & pos) const;
 
         /**
          * Snap @p angle in degrees to a 15° raster.
          */
         qreal snapAngle(qreal angle) const;
 
         /**
          * Returns the ZoomController object that handles the zoom operations.
          */
         ZoomController * zoomController() const;
 
     public Q_SLOTS:
         /**
          * Sets the zoom factor. 1.0 maps to 100%.
          */
         void setZoom(qreal zoomFactor);
 
     Q_SIGNALS:
         /**
          * This signal is emitted whenever the mouse moved on the view.
          */
         void mousePositionChanged(const tikz::Pos & pos);
 
     protected:
         void mousePressEvent(QMouseEvent* event) override;
         void mouseMoveEvent(QMouseEvent* event) override;
         void mouseReleaseEvent(QMouseEvent* event) override;
         void wheelEvent(QWheelEvent* event) override;
         bool viewportEvent(QEvent * event) override;
 
         void drawBackground(QPainter * painter, const QRectF & rect) override;
         void drawForeground(QPainter * painter, const QRectF & rect) override;
 
     private:
         DocumentPrivate * m_doc = nullptr;
         tikz::ui::Grid * m_grid = nullptr;
         tikz::ui::Ruler * m_hRuler = nullptr;
         tikz::ui::Ruler * m_vRuler = nullptr;
         tikz::ui::ZoomController * m_zoomController = nullptr;
         QPointF m_lastMousePos;
         bool m_handTool = false;
 };
 
 }
 }
 
 #endif // TIKZ_UI_RENDERER_H
 
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