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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "chrome/browser/printing/page_number.h"
#include "base/logging.h"
#include "chrome/browser/printing/print_settings.h"
namespace printing {
PageNumber::PageNumber(const PrintSettings& settings, int document_page_count) {
Init(settings, document_page_count);
}
PageNumber::PageNumber()
: ranges_(NULL),
page_number_(-1),
page_range_index_(-1),
document_page_count_(0) {
}
void PageNumber::operator=(const PageNumber& other) {
ranges_ = other.ranges_;
page_number_ = other.page_number_;
page_range_index_ = other.page_range_index_;
document_page_count_ = other.document_page_count_;
}
void PageNumber::Init(const PrintSettings& settings, int document_page_count) {
DCHECK(document_page_count);
ranges_ = settings.ranges.empty() ? NULL : &settings.ranges;
document_page_count_ = document_page_count;
if (ranges_) {
page_range_index_ = 0;
page_number_ = (*ranges_)[0].from;
} else {
if (document_page_count) {
page_number_ = 0;
} else {
page_number_ = -1;
}
page_range_index_ = -1;
}
}
int PageNumber::operator++() {
if (!ranges_) {
// Switch to next page.
if (++page_number_ == document_page_count_) {
// Finished.
*this = npos();
}
} else {
// Switch to next page.
++page_number_;
// Page ranges are inclusive.
if (page_number_ > (*ranges_)[page_range_index_].to) {
if (++page_range_index_ == ranges_->size()) {
// Finished.
*this = npos();
} else {
page_number_ = (*ranges_)[page_range_index_].from;
}
}
}
return ToInt();
}
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_;
}
} // namespace printing
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