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 CHANGELOG.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 <wx/window.h>

class COMMON_SETTINGS;

class DPI_SCALING
{
public:
    DPI_SCALING( COMMON_SETTINGS* aConfig, const wxWindow* aWindow );

    double GetScaleFactor() const;

    bool GetCanvasIsAutoScaled() const;

    void SetDpiConfig( bool aAuto, double aValue );

    /*
     * 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();

private:
    COMMON_SETTINGS* m_config;

    const wxWindow* m_window;
};

#endif // DPI_SCALING__H