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// Copyright 2013 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/printing_utils.h"
#include <unicode/ulocdata.h>
#include <algorithm>
#include <cmath>
#include <string>
#include "base/logging.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "printing/units.h"
#include "third_party/icu/source/common/unicode/uchar.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/text_elider.h"
namespace printing {
namespace {
constexpr size_t kMaxDocumentTitleLength = 80;
constexpr gfx::Size kIsoA4Microns = gfx::Size(210000, 297000);
} // namespace
base::string16 SimplifyDocumentTitleWithLength(const base::string16& title,
size_t length) {
base::string16 no_controls(title);
no_controls.erase(
std::remove_if(no_controls.begin(), no_controls.end(), &u_iscntrl),
no_controls.end());
static constexpr const char* kCharsToReplace[] = {
"\\", "/", "<", ">", ":", "\"", "'", "|", "?", "*", "~",
};
for (const char* c : kCharsToReplace) {
base::ReplaceChars(no_controls, base::ASCIIToUTF16(c),
base::ASCIIToUTF16("_"), &no_controls);
}
base::string16 result;
gfx::ElideString(no_controls, length, &result);
return result;
}
base::string16 FormatDocumentTitleWithOwnerAndLength(
const base::string16& owner,
const base::string16& title,
size_t length) {
const base::string16 separator = base::ASCIIToUTF16(": ");
DCHECK_LT(separator.size(), length);
base::string16 short_title =
SimplifyDocumentTitleWithLength(owner, length - separator.size());
short_title += separator;
if (short_title.size() < length) {
short_title +=
SimplifyDocumentTitleWithLength(title, length - short_title.size());
}
return short_title;
}
base::string16 SimplifyDocumentTitle(const base::string16& title) {
return SimplifyDocumentTitleWithLength(title, kMaxDocumentTitleLength);
}
base::string16 FormatDocumentTitleWithOwner(const base::string16& owner,
const base::string16& title) {
return FormatDocumentTitleWithOwnerAndLength(owner, title,
kMaxDocumentTitleLength);
}
gfx::Size GetDefaultPaperSizeFromLocaleMicrons(base::StringPiece locale) {
if (locale.empty())
return kIsoA4Microns;
int32_t width = 0;
int32_t height = 0;
UErrorCode error = U_ZERO_ERROR;
ulocdata_getPaperSize(locale.as_string().c_str(), &height, &width, &error);
if (error > U_ZERO_ERROR) {
// If the call failed, assume Letter paper size.
LOG(WARNING) << "ulocdata_getPaperSize failed, using ISO A4 Paper, error: "
<< error;
return kIsoA4Microns;
}
// Convert millis to microns
return gfx::Size(width * 1000, height * 1000);
}
bool SizesEqualWithinEpsilon(const gfx::Size& lhs,
const gfx::Size& rhs,
int epsilon) {
DCHECK_GE(epsilon, 0);
if (lhs.IsEmpty() && rhs.IsEmpty())
return true;
return std::abs(lhs.width() - rhs.width()) <= epsilon &&
std::abs(lhs.height() - rhs.height()) <= epsilon;
}
} // namespace printing
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