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// Copyright 2013 The Chromium Authors
// 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 <algorithm>
#include <cstring>
#include <string>
#include "base/logging.h"
#include "base/strings/string_util.h"
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
#include "build/chromeos_buildflags.h"
#include "third_party/icu/source/common/unicode/uchar.h"
#include "ui/gfx/text_elider.h"
#if BUILDFLAG(USE_CUPS) && !BUILDFLAG(IS_CHROMEOS_ASH)
#include <unicode/ulocdata.h>
#include <cmath>
#include "base/strings/string_piece.h"
#include "printing/units.h"
#include "ui/gfx/geometry/size.h"
#endif
#if BUILDFLAG(IS_WIN)
#include <windows.h>
#endif
namespace printing {
namespace {
constexpr size_t kMaxDocumentTitleLength = 80;
#if BUILDFLAG(USE_CUPS) && !BUILDFLAG(IS_CHROMEOS_ASH)
constexpr gfx::Size kIsoA4Microns = gfx::Size(210000, 297000);
#endif
} // namespace
std::u16string SimplifyDocumentTitleWithLength(const std::u16string& title,
size_t length) {
std::u16string 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), u"_", &no_controls);
}
std::u16string result;
gfx::ElideString(no_controls, length, &result);
return result;
}
std::u16string FormatDocumentTitleWithOwnerAndLength(
const std::u16string& owner,
const std::u16string& title,
size_t length) {
const std::u16string separator = u": ";
DCHECK_LT(separator.size(), length);
std::u16string 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;
}
std::u16string SimplifyDocumentTitle(const std::u16string& title) {
return SimplifyDocumentTitleWithLength(title, kMaxDocumentTitleLength);
}
std::u16string FormatDocumentTitleWithOwner(const std::u16string& owner,
const std::u16string& title) {
return FormatDocumentTitleWithOwnerAndLength(owner, title,
kMaxDocumentTitleLength);
}
#if BUILDFLAG(USE_CUPS) && !BUILDFLAG(IS_CHROMEOS_ASH)
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(std::string(locale).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 * kMicronsPerMm, height * kMicronsPerMm);
}
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;
}
#endif // BUILDFLAG(USE_CUPS) && !BUILDFLAG(IS_CHROMEOS_ASH)
#if BUILDFLAG(IS_WIN)
gfx::Rect GetCenteredPageContentRect(const gfx::Size& paper_size,
const gfx::Size& page_size,
const gfx::Rect& page_content_rect) {
gfx::Rect content_rect = page_content_rect;
if (paper_size.width() > page_size.width()) {
int diff = paper_size.width() - page_size.width();
content_rect.set_x(content_rect.x() + diff / 2);
}
if (paper_size.height() > page_size.height()) {
int diff = paper_size.height() - page_size.height();
content_rect.set_y(content_rect.y() + diff / 2);
}
return content_rect;
}
gfx::Rect GetPrintableAreaDeviceUnits(HDC hdc) {
DCHECK(hdc);
gfx::Size physical_size_device_units(GetDeviceCaps(hdc, PHYSICALWIDTH),
GetDeviceCaps(hdc, PHYSICALHEIGHT));
gfx::Rect printable_area_device_units(
GetDeviceCaps(hdc, PHYSICALOFFSETX), GetDeviceCaps(hdc, PHYSICALOFFSETY),
GetDeviceCaps(hdc, HORZRES), GetDeviceCaps(hdc, VERTRES));
// Sanity check the printable_area: we've seen crashes caused by a printable
// area rect of 0, 0, 0, 0, so it seems some drivers don't set it.
if (printable_area_device_units.IsEmpty() ||
!gfx::Rect(physical_size_device_units)
.Contains(printable_area_device_units)) {
printable_area_device_units = gfx::Rect(physical_size_device_units);
}
return printable_area_device_units;
}
#endif // BUILDFLAG(IS_WIN)
bool LooksLikePdf(base::span<const char> maybe_pdf_data) {
return maybe_pdf_data.size() >= 50u &&
std::memcmp(maybe_pdf_data.data(), "%PDF-", 5) == 0;
}
} // namespace printing
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