chromium/third_party/skia/src/text/gpu/TextBlob.h

/*
 * Copyright 2015 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */

#ifndef sktext_gpu_TextBlob_DEFINED
#define sktext_gpu_TextBlob_DEFINED

#include "include/core/SkColor.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSurfaceProps.h"
#include "include/private/base/SkTo.h"
#include "src/base/SkTInternalLList.h"
#include "src/core/SkMaskFilterBase.h"
#include "src/text/gpu/SubRunAllocator.h"
#include "src/text/gpu/SubRunContainer.h"

#include <cstddef>
#include <cstdint>
#include <tuple>

class SkCanvas;
struct SkPoint;
struct SkStrikeDeviceInfo;

namespace sktext {
class GlyphRunList;
class StrikeForGPUCacheInterface;
}

namespace sktext::gpu {
class Slug;

// -- TextBlob -----------------------------------------------------------------------------------
// A TextBlob contains a fully processed SkTextBlob, suitable for nearly immediate drawing
// on the GPU.  These are initially created with valid positions and colors, but with invalid
// texture coordinates.
//
// A TextBlob contains a number of SubRuns that are created in the blob's arena. Each SubRun
// tracks its own glyph and position data.
//
// In these classes, I'm trying to follow the convention about matrices and origins.
// * drawMatrix and drawOrigin - describes transformations for the current draw command.
// * positionMatrix - is equal to drawMatrix * [drawOrigin-as-translation-matrix]
// * initial Matrix - describes the combined initial matrix and origin the TextBlob was created
//                    with.
//
//
class TextBlob final : public SkRefCnt { … };

sk_sp<sktext::gpu::Slug> MakeSlug(const SkMatrix& drawMatrix,
                                  const sktext::GlyphRunList& glyphRunList,
                                  const SkPaint& paint,
                                  SkStrikeDeviceInfo strikeDeviceInfo,
                                  sktext::StrikeForGPUCacheInterface* strikeCache);
}  // namespace sktext::gpu
#endif  // sktext_gpu_TextBlob_DEFINED