dpi_scaling.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2019 KiCad Developers, see AUTHORS.TXT for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */
 
#ifndef DPI_SCALING__H
#define DPI_SCALING__H
 
#include <gal/gal.h>
#include <wx/window.h>
 
class GAL_API DPI_SCALING
{
public:
 DPI_SCALING(){};
 
 virtual ~DPI_SCALING() {}
 
 virtual double GetScaleFactor() const = 0;
 
 virtual double GetContentScaleFactor() const = 0;
 
 virtual bool GetCanvasIsAutoScaled() const = 0;
 
 virtual void SetDpiConfig( bool aAuto, double aValue ) = 0;
 
 /*
 * Get the maximum scaling factor that should be presented to the user.
 * This is only advisory, it has no real technical use other than for validation.
 */
 static double GetMaxScaleFactor();
 
 /*
 * Get the minimum scaling factor that should be presented to the user.
 * This is only advisory, it has no real technical use other than for validation.
 */
 static double GetMinScaleFactor();
 
 static double GetDefaultScaleFactor();
};
 
#endif // DPI_SCALING__H