// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "printing/page_number.h" #include #include #include "base/check_op.h" #include "printing/print_job_constants.h" namespace printing { PageNumber::PageNumber(const PageRanges& ranges, uint32_t document_page_count) { Init(ranges, document_page_count); } PageNumber::PageNumber() : ranges_(nullptr), page_number_(kInvalidPageIndex), page_range_index_(kInvalidPageIndex), document_page_count_(0) {} PageNumber::PageNumber(const PageNumber& other) = default; PageNumber& PageNumber::operator=(const PageNumber& other) = default; void PageNumber::Init(const PageRanges& ranges, uint32_t document_page_count) { DCHECK(document_page_count); ranges_ = ranges.empty() ? nullptr : &ranges; document_page_count_ = document_page_count; if (ranges_) { uint32_t first_page = (*ranges_)[0].from; if (first_page < document_page_count) { page_range_index_ = 0; page_number_ = (*ranges_)[0].from; } else { page_range_index_ = kInvalidPageIndex; page_number_ = kInvalidPageIndex; } } else { page_range_index_ = kInvalidPageIndex; page_number_ = 0; } } uint32_t PageNumber::operator++() { ++page_number_; if (page_number_ >= document_page_count_) { // Finished. *this = npos(); } else if (ranges_ && page_number_ > (*ranges_)[page_range_index_].to) { DCHECK_LE(ranges_->size(), static_cast(std::numeric_limits::max())); if (++page_range_index_ == ranges_->size()) { // Finished. *this = npos(); } else { page_number_ = (*ranges_)[page_range_index_].from; } } return ToUint(); } bool PageNumber::operator==(const PageNumber& other) const { return page_number_ == other.page_number_ && page_range_index_ == other.page_range_index_; } bool PageNumber::operator!=(const PageNumber& other) const { return page_number_ != other.page_number_ || page_range_index_ != other.page_range_index_; } // static std::vector PageNumber::GetPages(PageRanges ranges, uint32_t page_count) { PageRange::Normalize(ranges); std::vector printed_pages; static constexpr uint32_t kMaxNumberOfPages = 100000; printed_pages.reserve(std::min(page_count, kMaxNumberOfPages)); for (PageNumber page_number(ranges, std::min(page_count, kMaxNumberOfPages)); page_number != PageNumber::npos(); ++page_number) { printed_pages.push_back(page_number.ToUint()); } return printed_pages; } } // namespace printing