1 /* 2 * Copyright 2011 Google Inc. All Rights Reserved. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include <limits.h> 18 #include <algorithm> 19 #include <functional> 20 21 #include "sfntly/data/font_data.h" 22 23 namespace sfntly { 24 25 int32_t FontData::Size() const { 26 return std::min<int32_t>(array_->Size() - bound_offset_, bound_length_); 27 } 28 29 bool FontData::Bound(int32_t offset, int32_t length) { 30 if (offset + length > Size() || offset < 0 || length < 0) 31 return false; 32 33 bound_offset_ += offset; 34 bound_length_ = length; 35 return true; 36 } 37 38 bool FontData::Bound(int32_t offset) { 39 if (offset > Size() || offset < 0) 40 return false; 41 42 bound_offset_ += offset; 43 return true; 44 } 45 46 int32_t FontData::Length() const { 47 return std::min<int32_t>(array_->Length() - bound_offset_, bound_length_); 48 } 49 50 FontData::FontData(ByteArray* ba) { 51 Init(ba); 52 } 53 54 FontData::FontData(FontData* data, int32_t offset, int32_t length) { 55 Init(data->array_); 56 Bound(data->bound_offset_ + offset, length); 57 } 58 59 FontData::FontData(FontData* data, int32_t offset) { 60 Init(data->array_); 61 Bound(data->bound_offset_ + offset, 62 (data->bound_length_ == GROWABLE_SIZE) 63 ? GROWABLE_SIZE : data->bound_length_ - offset); 64 } 65 66 FontData::~FontData() {} 67 68 void FontData::Init(ByteArray* ba) { 69 array_ = ba; 70 bound_offset_ = 0; 71 bound_length_ = GROWABLE_SIZE; 72 } 73 74 int32_t FontData::BoundOffset(int32_t offset) { 75 return offset + bound_offset_; 76 } 77 78 int32_t FontData::BoundLength(int32_t offset, int32_t length) { 79 return std::min<int32_t>(length, bound_length_ - offset); 80 } 81 82 } // namespace sfntly 83
