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/*
* Copyright 2011 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <limits.h>
#include <algorithm>
#include <functional>
#include "sfntly/data/font_data.h"
namespace sfntly {
const int32_t DataSize::kBYTE = 1;
const int32_t DataSize::kCHAR = 1;
const int32_t DataSize::kUSHORT = 2;
const int32_t DataSize::kSHORT = 2;
const int32_t DataSize::kUINT24 = 3;
const int32_t DataSize::kULONG = 4;
const int32_t DataSize::kLONG = 4;
const int32_t DataSize::kFixed = 4;
const int32_t DataSize::kFUNIT = 4;
const int32_t DataSize::kFWORD = 2;
const int32_t DataSize::kUFWORD = 2;
const int32_t DataSize::kF2DOT14 = 2;
const int32_t DataSize::kLONGDATETIME = 8;
const int32_t DataSize::kTag = 4;
const int32_t DataSize::kGlyphID = 2;
const int32_t DataSize::kOffset = 2;
FontData::~FontData() {}
void FontData::init(ByteArray* ba) {
array_ = ba;
bound_offset_ = 0;
bound_length_ = INT_MAX;
}
FontData::FontData(ByteArray* ba) {
init(ba);
}
FontData::FontData(FontData* data, int32_t offset, int32_t length) {
init(data->array_);
bound(data->bound_offset_ + offset, length);
}
FontData::FontData(FontData* data, int32_t offset) {
init(data->array_);
bound(offset);
}
bool FontData::bound(int32_t offset, int32_t length) {
if (offset + length > size() || offset < 0 || length < 0)
return false;
bound_offset_ += offset;
bound_length_ = length;
return true;
}
bool FontData::bound(int32_t offset) {
if (offset > size() || offset < 0)
return false;
bound_offset_ += offset;
return true;
}
int32_t FontData::length() const {
return std::min<int32_t>(array_->length() - bound_offset_, bound_length_);
}
int32_t FontData::size() const {
return std::min<int32_t>(array_->size() - bound_offset_, bound_length_);
}
int32_t FontData::boundOffset(int32_t offset) {
return offset + bound_offset_;
}
int32_t FontData::boundLength(int32_t offset, int32_t length) {
return std::min<int32_t>(length, bound_length_ - offset);
}
} // namespace sfntly
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