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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/paint_preview/common/glyph_usage.h"
#include "base/functional/callback.h"
namespace paint_preview {
GlyphUsage::GlyphUsage() : first_(0), last_(0) {}
GlyphUsage::GlyphUsage(uint16_t first, uint16_t last)
: first_(first), last_(last) {
DCHECK_EQ(first, 1U);
DCHECK_LE(first, last);
}
GlyphUsage::~GlyphUsage() = default;
DenseGlyphUsage::DenseGlyphUsage() : GlyphUsage(), bitset_(0, false) {}
DenseGlyphUsage::DenseGlyphUsage(uint16_t num_glyphs)
: GlyphUsage(1, num_glyphs), bitset_(num_glyphs + 1, false) {}
DenseGlyphUsage::~DenseGlyphUsage() = default;
void DenseGlyphUsage::Set(uint16_t glyph_id) {
if (!ShouldSubset() ||
(glyph_id != 0 && (glyph_id < First() || glyph_id > Last())))
return;
bitset_[glyph_id] = true;
}
bool DenseGlyphUsage::IsSet(uint16_t glyph_id) const {
if (!ShouldSubset() ||
(glyph_id != 0 && (glyph_id < First() || glyph_id > Last())))
return false;
return bitset_[glyph_id];
}
void DenseGlyphUsage::ForEach(
const base::RepeatingCallback<void(uint16_t)>& callback) const {
for (uint16_t i = 0; i < bitset_.size(); ++i) {
if (bitset_[i])
callback.Run(i);
}
}
SparseGlyphUsage::SparseGlyphUsage() : GlyphUsage() {}
SparseGlyphUsage::SparseGlyphUsage(uint16_t num_glyphs)
: GlyphUsage(1, num_glyphs) {}
SparseGlyphUsage::~SparseGlyphUsage() = default;
void SparseGlyphUsage::Set(uint16_t glyph_id) {
if (!ShouldSubset() ||
(glyph_id != 0 && (glyph_id < First() || glyph_id > Last())))
return;
glyph_ids_.insert(glyph_id);
}
bool SparseGlyphUsage::IsSet(uint16_t glyph_id) const {
return glyph_ids_.count(glyph_id);
}
void SparseGlyphUsage::ForEach(
const base::RepeatingCallback<void(uint16_t)>& callback) const {
for (const auto& key : glyph_ids_)
callback.Run(key);
}
} // namespace paint_preview
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