LCOV - code coverage report
Current view: top level - core/layout - qgslayoutmeasurementconverter.h (source / functions) Hit Total Coverage
Test: coverage.info.cleaned Lines: 0 4 0.0 %
Date: 2021-04-10 08:29:14 Functions: 0 0 -
Branches: 0 0 -

           Branch data     Line data    Source code
       1                 :            : /***************************************************************************
       2                 :            :                          qgslayoutmeasurementconverter.h
       3                 :            :                          -------------------------------
       4                 :            :     begin                : June 2017
       5                 :            :     copyright            : (C) 2017 by Nyall Dawson
       6                 :            :     email                : nyall dot dawson at gmail dot com
       7                 :            :  ***************************************************************************/
       8                 :            : 
       9                 :            : /***************************************************************************
      10                 :            :  *                                                                         *
      11                 :            :  *   This program is free software; you can redistribute it and/or modify  *
      12                 :            :  *   it under the terms of the GNU General Public License as published by  *
      13                 :            :  *   the Free Software Foundation; either version 2 of the License, or     *
      14                 :            :  *   (at your option) any later version.                                   *
      15                 :            :  *                                                                         *
      16                 :            :  ***************************************************************************/
      17                 :            : 
      18                 :            : #ifndef QGSLAYOUTMEASUREMENTCONVERTER_H
      19                 :            : #define QGSLAYOUTMEASUREMENTCONVERTER_H
      20                 :            : 
      21                 :            : #include "qgis_core.h"
      22                 :            : #include "qgsunittypes.h"
      23                 :            : #include "qgslayoutmeasurement.h"
      24                 :            : #include "qgslayoutsize.h"
      25                 :            : #include "qgslayoutpoint.h"
      26                 :            : #include <QSizeF>
      27                 :            : #include <QPointF>
      28                 :            : 
      29                 :            : 
      30                 :            : /**
      31                 :            :  * \ingroup core
      32                 :            :  * \class QgsLayoutMeasurementConverter
      33                 :            :  * \brief This class provides a method of converting QgsLayoutMeasurements from
      34                 :            :  * one unit to another. Conversion to or from pixel units utilizes a specified
      35                 :            :  * dots per inch (DPI) property for the converter. Converters default to using
      36                 :            :  * 300 DPI.
      37                 :            :  * \see QgsLayoutMeasurement
      38                 :            :  * \since QGIS 3.0
      39                 :            :  */
      40                 :            : class CORE_EXPORT QgsLayoutMeasurementConverter
      41                 :            : {
      42                 :            :   public:
      43                 :            : 
      44                 :            :     /**
      45                 :            :      * Constructor for QgsLayoutMeasurementConverter.
      46                 :            :      */
      47                 :          0 :     QgsLayoutMeasurementConverter() = default;
      48                 :            : 
      49                 :            :     /**
      50                 :            :      * Sets the dots per inch (\a dpi) for the measurement converter. This is used
      51                 :            :      * when converting measurements to and from pixels.
      52                 :            :      * \see dpi()
      53                 :            :     */
      54                 :          0 :     void setDpi( const double dpi ) { mDpi = dpi; }
      55                 :            : 
      56                 :            :     /**
      57                 :            :      * Returns the Dots per inch (DPI) of the measurement converter. This is used
      58                 :            :      * when converting measurements to and from pixels.
      59                 :            :      * \see setDpi()
      60                 :            :     */
      61                 :          0 :     double dpi() const { return mDpi; }
      62                 :            : 
      63                 :            :     /**
      64                 :            :      * Converts a measurement from one unit to another.
      65                 :            :      * \param measurement measurement to convert
      66                 :            :      * \param targetUnits units to convert measurement into
      67                 :            :      * \returns measurement converted to target units
      68                 :            :     */
      69                 :            :     QgsLayoutMeasurement convert( QgsLayoutMeasurement measurement, QgsUnitTypes::LayoutUnit targetUnits ) const;
      70                 :            : 
      71                 :            :     /**
      72                 :            :      * Converts a layout size from one unit to another.
      73                 :            :      * \param size layout size to convert
      74                 :            :      * \param targetUnits units to convert size into
      75                 :            :      * \returns size converted to target units
      76                 :            :     */
      77                 :            :     QgsLayoutSize convert( const QgsLayoutSize &size, QgsUnitTypes::LayoutUnit targetUnits ) const;
      78                 :            : 
      79                 :            :     /**
      80                 :            :      * Converts a layout point from one unit to another.
      81                 :            :      * \param point layout point to convert
      82                 :            :      * \param targetUnits units to convert point into
      83                 :            :      * \returns point converted to target units
      84                 :            :     */
      85                 :            :     QgsLayoutPoint convert( const QgsLayoutPoint &point, QgsUnitTypes::LayoutUnit targetUnits ) const;
      86                 :            : 
      87                 :            :   private:
      88                 :            : 
      89                 :          0 :     double mDpi = 300.0;
      90                 :            : 
      91                 :            :     double convertToMillimeters( QgsLayoutMeasurement measurement ) const;
      92                 :            :     double convertToCentimeters( QgsLayoutMeasurement measurement ) const;
      93                 :            :     double convertToMeters( QgsLayoutMeasurement measurement ) const;
      94                 :            :     double convertToInches( QgsLayoutMeasurement measurement ) const;
      95                 :            :     double convertToFeet( QgsLayoutMeasurement measurement ) const;
      96                 :            :     double convertToPoints( QgsLayoutMeasurement measurement ) const;
      97                 :            :     double convertToPicas( QgsLayoutMeasurement measurement ) const;
      98                 :            :     double convertToPixels( QgsLayoutMeasurement measurement ) const;
      99                 :            : 
     100                 :            : };
     101                 :            : 
     102                 :            : #endif // QGSLAYOUTMEASUREMENTCONVERTER_H

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