blob: 484911a4135785439bd0dd9ee4be388515b3ac5a [file] [log] [blame]
/*
* Copyright 2023 Google LLC
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "src/core/SkFontMetricsPriv.h"
#include "src/core/SkReadBuffer.h"
#include "src/core/SkWriteBuffer.h"
#include <optional>
void SkFontMetricsPriv::Flatten(SkWriteBuffer& buffer, const SkFontMetrics& metrics) {
buffer.writeUInt(metrics.fFlags);
buffer.writeScalar(metrics.fTop);
buffer.writeScalar(metrics.fAscent);
buffer.writeScalar(metrics.fDescent);
buffer.writeScalar(metrics.fBottom);
buffer.writeScalar(metrics.fLeading);
buffer.writeScalar(metrics.fAvgCharWidth);
buffer.writeScalar(metrics.fMaxCharWidth);
buffer.writeScalar(metrics.fXMin);
buffer.writeScalar(metrics.fXMax);
buffer.writeScalar(metrics.fXHeight);
buffer.writeScalar(metrics.fCapHeight);
buffer.writeScalar(metrics.fUnderlineThickness);
buffer.writeScalar(metrics.fUnderlinePosition);
buffer.writeScalar(metrics.fStrikeoutThickness);
buffer.writeScalar(metrics.fStrikeoutPosition);
}
std::optional<SkFontMetrics> SkFontMetricsPriv::MakeFromBuffer(SkReadBuffer& buffer) {
SkASSERT(buffer.isValid());
SkFontMetrics metrics;
metrics.fFlags = buffer.readUInt();
metrics.fTop = buffer.readScalar();
metrics.fAscent = buffer.readScalar();
metrics.fDescent = buffer.readScalar();
metrics.fBottom = buffer.readScalar();
metrics.fLeading = buffer.readScalar();
metrics.fAvgCharWidth = buffer.readScalar();
metrics.fMaxCharWidth = buffer.readScalar();
metrics.fXMin = buffer.readScalar();
metrics.fXMax = buffer.readScalar();
metrics.fXHeight = buffer.readScalar();
metrics.fCapHeight = buffer.readScalar();
metrics.fUnderlineThickness = buffer.readScalar();
metrics.fUnderlinePosition = buffer.readScalar();
metrics.fStrikeoutThickness = buffer.readScalar();
metrics.fStrikeoutPosition = buffer.readScalar();
// All the reads above were valid, so return the metrics.
if (buffer.isValid()) {
return metrics;
}
return std::nullopt;
}