File indexing completed on 2024-05-19 04:36:38

 /* This file is part of the TikZKit project.
  *
  * Copyright (C) 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_GRID_H
 #define TIKZ_UI_GRID_H
 
 #include <QObject>
 #include <QVarLengthArray>
 #include <QRectF>
 #include <QLineF>
 
 #include <tikz/core/Value.h>
 #include <tikz/core/Pos.h>
 
 class QPainter;
 
 namespace tikz {
 namespace ui {
 
 class GridPrivate;
 
 /**
  * A Grid for a QGraphicsView.
  *
  * The grid is painted in the background and consists of major and minor lines.
  * Major lines are drawn at each full unit (e.g. 0cm, 1cm, 2cm, etc.).
  * Minor lines are drawn between the major lines as an additional help.
  * The amout of the minor lines varies depending on the zoom of the QGraphicsView.
  */
 class Grid : public QObject
 {
     Q_OBJECT
     Q_PROPERTY(Unit unit READ unit WRITE setUnit)
     Q_PROPERTY(qreal zoom READ zoom WRITE setZoom)
 
 public:
     /**
      * Constructor with required @p view.
      */
     explicit Grid(QObject * parent = nullptr);
 
     /**
      * Destructor.
      */
     ~Grid();
 
     /**
      * Draw the grid using the painter @p p.
      */
     void draw(QPainter * p, const QRectF & rect);
 
     /**
      * Returns this Grid's unit.
      */
     tikz::Unit unit() const noexcept;
 
     /**
      * Returns this Grid's zoom factor.
      */
     qreal zoom() const noexcept;
 
 public Q_SLOTS:
     /**
      * Set the unit of this Grid to @p unit.
      */
     void setUnit(tikz::Unit unit) noexcept;
 
     /**
      * Set this Grid's zoom factor to @p zoomFactor.
      */
     void setZoom(qreal zoomFactor) noexcept;
 
 public:
     /**
      * 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;
 
 private:
     GridPrivate * const d;
 };
 
 }
 }
 
 #endif // TIKZ_UI_GRID_H
 
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