/*

* Copyright 2024 Google Inc.

*

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

* found in the LICENSE file.

*/

#ifndef SKFONTSCANNER_H_

#define SKFONTSCANNER_H_

#include "include/core/SkFontArguments.h"

#include "include/core/SkTypes.h"

#include "include/private/base/SkFixed.h"

#include "include/private/base/SkNoncopyable.h"

#include "include/private/base/SkTArray.h"

class SkFontStyle;

class SkStreamAsset;

class SkString;

class SkFontScanner : public SkNoncopyable {

public:

    virtual ~SkFontScanner() = default;

    struct AxisDefinition {

        SkFourByteTag fTag;

        SkScalar fMinimum;

        SkScalar fDefault;

        SkScalar fMaximum;

    };

    typedef skia_private::STArray<4, AxisDefinition, true> AxisDefinitions;

    virtual bool scanFile(SkStreamAsset* stream, int* numFaces) const = 0;

    virtual bool scanFace(SkStreamAsset* stream, int faceIndex, int* numInstances) const = 0;

    /* instanceIndex 0 is the default instance, 1 to numInstances are the named instances. */

    virtual bool scanInstance(SkStreamAsset* stream,

                              int faceIndex,

                              int instanceIndex,

                              SkString* name,

                              SkFontStyle* style,

                              bool* isFixedPitch,

                              AxisDefinitions* axes) const = 0;

};

#endif // SKFONTSCANNER_H_