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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SKIA_EXT_SKIA_UTILS_BASE_H_
#define SKIA_EXT_SKIA_UTILS_BASE_H_
#include "base/compiler_specific.h"
#include "base/containers/span.h"
#include "third_party/skia/include/core/SkColor.h"
#include "third_party/skia/include/core/SkFlattenable.h"
#include "third_party/skia/include/ports/SkFontConfigInterface.h"
namespace base {
class Pickle;
class PickleIterator;
}
class SkBitmap;
class SkFlattenable;
class SkColorSpace;
struct skcms_Matrix3x3;
struct skcms_TransferFunction;
namespace skia {
// Return true if the pickle/iterator contains a string. If so, and if str
// is not null, copy that string into str.
SK_API bool ReadSkString(base::PickleIterator* iter, SkString* str);
// Return true if the pickle/iterator contains a FontIdentity. If so, and if
// identity is not null, copy it into identity.
SK_API bool ReadSkFontIdentity(base::PickleIterator* iter,
SkFontConfigInterface::FontIdentity* identity);
// Return true if the pickle/iterator contains a SkFontStyle. If so, and if
// style is not null, copy it into style.
SK_API bool ReadSkFontStyle(base::PickleIterator* iter, SkFontStyle* style);
// Writes str into the request pickle.
SK_API void WriteSkString(base::Pickle* pickle, const SkString& str);
// Writes identity into the request pickle.
SK_API void WriteSkFontIdentity(
base::Pickle* pickle,
const SkFontConfigInterface::FontIdentity& identity);
// Writes style into the request pickle.
SK_API void WriteSkFontStyle(base::Pickle* pickle, SkFontStyle style);
// Converts an SkBitmap to an Opaque or Premul N32 SkBitmap with stride matching
// the width of each row. If the input is has the right format (N32 Opaque or
// Premul) without stride padding already, this assigns `in` to `out`, sharing
// the backing pixels. `out` may or may not be GPU-backed.
//
// If unsuccessful, returns false, but |out| may be modified.
//
// This should be called as early as possible at IPC endpoints from
// less-privileged contexts (e.g. on a message from the renderer process) if the
// code handling the SkBitmap wants to work with an N32 type, rather than
// delaying this conversion until a later time.
SK_API bool SkBitmapToN32OpaqueOrPremul(const SkBitmap& in, SkBitmap* out);
// Returns hex string representation for the |color| in "#FFFFFF" format.
SK_API std::string SkColorToHexString(SkColor color);
// Return a string representation of an SkColorSpace. Accepts nullptr.
SK_API std::string SkColorSpaceToString(const SkColorSpace* cs);
// Return string representation of skcms matrix and transfer functions.
SK_API std::string SkcmsMatrix3x3ToString(const skcms_Matrix3x3& m);
SK_API std::string SkcmsTransferFunctionToString(
const skcms_TransferFunction& f);
// Helper for converting a `SkData` into a `base::span<const uint8_t>` (the
// generic `base::as_byte_span` won't accept an `SkData` as input because it
// returns `void*` from `SkData::data` accessor).
SK_API base::span<const uint8_t> as_byte_span(
const SkData& sk_data LIFETIME_BOUND);
} // namespace skia
#endif // SKIA_EXT_SKIA_UTILS_BASE_H_
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