chromium/third_party/skia/src/text/gpu/SubRunControl.cpp

/*
 * Copyright 2020 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#include "src/text/gpu/SubRunControl.h"

#include "include/core/SkFont.h"
#include "include/core/SkFontTypes.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkScalar.h"
#include "src/core/SkFontPriv.h"
#include "src/core/SkGlyph.h"
#include "src/core/SkReadBuffer.h"
#include "src/core/SkWriteBuffer.h"

#include <tuple>

struct SkPoint;

namespace sktext::gpu {

#if !defined(SK_DISABLE_SDF_TEXT)
// DF sizes and thresholds for usage of the small and medium sizes. For example, above
// kSmallDFFontLimit we will use the medium size. The large size is used up until the size at
// which we switch over to drawing as paths as controlled by Control.
static const int kSmallDFFontLimit = …;
static const int kMediumDFFontLimit = …;
static const int kLargeDFFontLimit = …;
#ifdef SK_BUILD_FOR_MAC
static const int kExtraLargeDFFontLimit = 256;
#endif

SkScalar SubRunControl::MinSDFTRange(bool useSDFTForSmallText, SkScalar min) { … }

SubRunControl::SubRunControl(
        bool ableToUseSDFT, bool useSDFTForSmallText, bool useSDFTForPerspectiveText,
        SkScalar min, SkScalar max,
        bool forcePathAA)
        : … { … }
#endif // !defined(SK_DISABLE_SDF_TEXT)

bool SubRunControl::isDirect(SkScalar approximateDeviceTextSize, const SkPaint& paint,
                           const SkMatrix& matrix) const { … }

#if !defined(SK_DISABLE_SDF_TEXT)
bool SubRunControl::isSDFT(SkScalar approximateDeviceTextSize, const SkPaint& paint,
                           const SkMatrix& matrix) const { … }

std::tuple<SkFont, SkScalar, SDFTMatrixRange>
SubRunControl::getSDFFont(const SkFont& font, const SkMatrix& viewMatrix,
                        const SkPoint& textLoc) const { … }

bool SDFTMatrixRange::matrixInRange(const SkMatrix& matrix) const { … }

void SDFTMatrixRange::flatten(SkWriteBuffer& buffer) const { … }

SDFTMatrixRange SDFTMatrixRange::MakeFromBuffer(SkReadBuffer& buffer) { … }
#endif // !defined(SK_DISABLE_SDF_TEXT)

}  // namespace sktext::gpu