/*

 * Copyright 2018 Google Inc.

 *

 * Use of this source code is governed by a BSD-style license that can be

 * found in the LICENSE file.

 */

#ifndef SkFontParameters_DEFINED

#define SkFontParameters_DEFINED

#include "include/core/SkScalar.h"

#include "include/core/SkTypes.h"

struct SkFontParameters {

    struct Variation {

        // Parameters in a variation font axis.

        struct Axis {

            constexpr Axis() : tag(0), min(0), def(0), max(0), flags(0) {}

            constexpr Axis(SkFourByteTag tag, float min, float def, float max, bool hidden) :

                tag(tag), min(min), def(def), max(max), flags(hidden ? HIDDEN : 0) {}

            // Four character identifier of the font axis (weight, width, slant, italic...).

            SkFourByteTag tag;

            // Minimum value supported by this axis.

            float min;

            // Default value set by this axis.

            float def;

            // Maximum value supported by this axis. The maximum can equal the minimum.

            float max;

            // Return whether this axis is recommended to be remain hidden in user interfaces.

            bool isHidden() const { return flags & HIDDEN; }

            // Set this axis to be remain hidden in user interfaces.

            void setHidden(bool hidden) { flags = hidden ? (flags | HIDDEN) : (flags & ~HIDDEN); }

        private:

            static constexpr uint16_t HIDDEN = 0x0001;

            // Attributes for a font axis.

            uint16_t flags;

        };

    };

};

#endif