86 lines
2.2 KiB
C++
86 lines
2.2 KiB
C++
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "precompiled_libcef.h"
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#include "page_number.h"
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#include "print_settings.h"
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#include <limits>
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#include "base/logging.h"
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namespace printing {
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PageNumber::PageNumber(const PrintSettings& settings, int document_page_count) {
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Init(settings, document_page_count);
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}
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PageNumber::PageNumber()
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: ranges_(NULL),
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page_number_(-1),
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page_range_index_(-1),
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document_page_count_(0) {
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}
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void PageNumber::operator=(const PageNumber& other) {
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ranges_ = other.ranges_;
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page_number_ = other.page_number_;
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page_range_index_ = other.page_range_index_;
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document_page_count_ = other.document_page_count_;
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}
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void PageNumber::Init(const PrintSettings& settings, int document_page_count) {
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DCHECK(document_page_count);
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ranges_ = settings.ranges.empty() ? NULL : &settings.ranges;
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document_page_count_ = document_page_count;
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if (ranges_) {
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page_range_index_ = 0;
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page_number_ = (*ranges_)[0].from;
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} else {
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if (document_page_count) {
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page_number_ = 0;
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} else {
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page_number_ = -1;
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}
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page_range_index_ = -1;
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}
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}
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int PageNumber::operator++() {
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if (!ranges_) {
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// Switch to next page.
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if (++page_number_ == document_page_count_) {
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// Finished.
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*this = npos();
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}
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} else {
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// Switch to next page.
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++page_number_;
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// Page ranges are inclusive.
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if (page_number_ > (*ranges_)[page_range_index_].to) {
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DCHECK(ranges_->size() <= static_cast<size_t>(
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std::numeric_limits<int>::max()));
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if (++page_range_index_ == static_cast<int>(ranges_->size())) {
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// Finished.
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*this = npos();
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} else {
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page_number_ = (*ranges_)[page_range_index_].from;
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}
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}
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}
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return ToInt();
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}
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bool PageNumber::operator==(const PageNumber& other) const {
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return page_number_ == other.page_number_ &&
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page_range_index_ == other.page_range_index_;
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}
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bool PageNumber::operator!=(const PageNumber& other) const {
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return page_number_ != other.page_number_ ||
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page_range_index_ != other.page_range_index_;
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}
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} // namespace printing
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