cef/libcef/printing/print_settings.cc

267 lines
9.8 KiB
C++

// 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 "libcef/printing/print_settings.h"
#include "base/atomic_sequence_num.h"
#include "base/logging.h"
#include "printing/units.h"
namespace printing {
// Global SequenceNumber used for generating unique cookie values.
static base::AtomicSequenceNumber cookie_seq(base::LINKER_INITIALIZED);
PageMeasurements::PageMeasurements()
: page_type(PT_LETTER),
page_length(0.0f),
page_width(0.0f) {
}
void PageMeasurements::Clear() {
page_type = PT_LETTER;
page_length = 0.0f;
page_width = 0.0f;
}
bool PageMeasurements::Equals(const PageMeasurements& rhs) const {
return page_type == rhs.page_type &&
page_length == rhs.page_length &&
page_width == rhs.page_width;
}
PrintSettings::PrintSettings()
: min_shrink(1.25),
max_shrink(2.0),
desired_dpi(72),
selection_only(false),
to_file(false),
dpi_(0),
landscape(false) {
ResetRequestedPageMargins();
}
void PrintSettings::Clear() {
ranges.clear();
min_shrink = 1.25;
max_shrink = 2.;
desired_dpi = 72;
selection_only = false;
to_file = false;
printer_name_.clear();
device_name_.clear();
page_setup_pixels_.Clear();
dpi_ = 0;
landscape = false;
page_measurements.Clear();
ResetRequestedPageMargins();
}
void PrintSettings::ResetRequestedPageMargins() {
// Initial requested margins to = 1.0cm = ~2/5 of inch
const int margin_printer_units =
ConvertUnit(1000, kHundrethsMMPerInch, desired_dpi);
// Initial requested header/footer margins to = 0.5cm = ~1/5 of inch
const int header_footer_margins =
ConvertUnit(500, kHundrethsMMPerInch, desired_dpi);
requested_margins.header = header_footer_margins;
requested_margins.footer = header_footer_margins;
requested_margins.left = margin_printer_units;
requested_margins.top = margin_printer_units;
requested_margins.right = margin_printer_units;
requested_margins.bottom = margin_printer_units;
}
#ifdef WIN32
void PrintSettings::Init(HDC hdc,
const DEVMODE& dev_mode,
const PageRanges& new_ranges,
const CefString& new_device_name,
bool print_selection_only,
bool print_to_file) {
DCHECK(hdc);
printer_name_ = std::wstring(dev_mode.dmDeviceName);
device_name_ = new_device_name;
ranges = new_ranges;
landscape = dev_mode.dmOrientation == DMORIENT_LANDSCAPE;
selection_only = print_selection_only;
to_file = print_to_file;
bool is_custom_paper = true;
if (dev_mode.dmFields & DM_PAPERSIZE) {
switch (dev_mode.dmPaperSize) {
case DMPAPER_LETTER:
page_measurements.page_type = PT_LETTER;
is_custom_paper = false;
break;
case DMPAPER_LEGAL:
page_measurements.page_type = PT_LEGAL;
is_custom_paper = false;
break;
case DMPAPER_EXECUTIVE:
page_measurements.page_type = PT_EXECUTIVE;
is_custom_paper = false;
break;
case DMPAPER_A3:
page_measurements.page_type = PT_A3;
is_custom_paper = false;
break;
case DMPAPER_A4:
page_measurements.page_type = PT_A4;
is_custom_paper = false;
break;
default:
// We'll translate it as a custom paper size.
break;
}
}
dpi_ = GetDeviceCaps(hdc, LOGPIXELSX);
// No printer device is known to advertise different dpi in X and Y axis; even
// the fax device using the 200x100 dpi setting. It's ought to break so many
// applications that it's not even needed to care about. WebKit doesn't
// support different dpi settings in X and Y axis.
DCHECK_EQ(dpi_, GetDeviceCaps(hdc, LOGPIXELSY));
DCHECK_EQ(GetDeviceCaps(hdc, SCALINGFACTORX), 0);
DCHECK_EQ(GetDeviceCaps(hdc, SCALINGFACTORY), 0);
// Initialize page_setup_pixels_.
gfx::Size physical_size_pixels(GetDeviceCaps(hdc, PHYSICALWIDTH),
GetDeviceCaps(hdc, PHYSICALHEIGHT));
gfx::Rect printable_area_pixels(GetDeviceCaps(hdc, PHYSICALOFFSETX),
GetDeviceCaps(hdc, PHYSICALOFFSETY),
GetDeviceCaps(hdc, HORZRES),
GetDeviceCaps(hdc, VERTRES));
if (is_custom_paper) {
page_measurements.page_length = ConvertUnitDouble(
static_cast<double>(physical_size_pixels.height()),
static_cast<double>(dpi_),
static_cast<double>(desired_dpi));
page_measurements.page_width = ConvertUnitDouble(
static_cast<double>(physical_size_pixels.width()),
static_cast<double>(dpi_),
static_cast<double>(desired_dpi));
if (landscape) {
double temp = page_measurements.page_length;
page_measurements.page_length = page_measurements.page_width;
page_measurements.page_width = temp;
}
}
SetPrinterPrintableArea(physical_size_pixels, printable_area_pixels);
}
#endif
void PrintSettings::SetPrinterPrintableArea(
gfx::Size const& physical_size_pixels,
gfx::Rect const& printable_area_pixels) {
// Hard-code text_height = 0.5cm = ~1/5 of inch
const int text_height = ConvertUnit(500, kHundrethsMMPerInch, dpi_);
// Start by setting the user configuration
page_setup_pixels_.Init(physical_size_pixels,
printable_area_pixels,
text_height);
// Now adjust requested margins to the appropriate dpi.
PageMargins margins;
margins.header = ConvertUnit(requested_margins.header, desired_dpi, dpi_);
margins.footer = ConvertUnit(requested_margins.footer, desired_dpi, dpi_);
margins.left = ConvertUnit(requested_margins.left, desired_dpi, dpi_);
margins.top = ConvertUnit(requested_margins.top, desired_dpi, dpi_);
margins.right = ConvertUnit(requested_margins.right, desired_dpi, dpi_);
margins.bottom = ConvertUnit(requested_margins.bottom, desired_dpi, dpi_);
page_setup_pixels_.SetRequestedMargins(margins);
}
void PrintSettings::RenderParams(PrintParams* params) const {
DCHECK(params);
params->printable_size.SetSize(page_setup_pixels_.content_area().width(),
page_setup_pixels_.content_area().height());
params->dpi = dpi_;
// Currently hardcoded at 1.25. See PrintSettings' constructor.
params->min_shrink = min_shrink;
// Currently hardcoded at 2.0. See PrintSettings' constructor.
params->max_shrink = max_shrink;
// Currently hardcoded at 72dpi. See PrintSettings' constructor.
params->desired_dpi = desired_dpi;
// Always use an invalid cookie.
params->document_cookie = 0;
params->selection_only = selection_only;
params->to_file = to_file;
}
bool PrintSettings::Equals(const PrintSettings& rhs) const {
// Do not test the display device name (printer_name_) for equality since it
// may sometimes be chopped off at 30 chars. As long as device_name is the
// same, that's fine.
return ranges == rhs.ranges &&
min_shrink == rhs.min_shrink &&
max_shrink == rhs.max_shrink &&
desired_dpi == rhs.desired_dpi &&
device_name_ == rhs.device_name_ &&
page_setup_pixels_.Equals(rhs.page_setup_pixels_) &&
dpi_ == rhs.dpi_ &&
landscape == rhs.landscape &&
page_measurements.Equals(rhs.page_measurements) &&
requested_margins.Equals(rhs.requested_margins);
}
int PrintSettings::NewCookie() {
// A cookie of 0 is used to mark a document as unassigned, count from 1.
return cookie_seq.GetNext() + 1;
}
void PrintSettings::UpdatePrintOptions(cef_print_options_t& print_options) {
print_options.page_orientation = (landscape) ? LANDSCAPE : PORTRAIT;
print_options.paper_metrics.paper_type = page_measurements.page_type;
if (page_measurements.page_type == PT_CUSTOM) {
print_options.paper_metrics.length = ConvertUnitDouble(
page_measurements.page_length, desired_dpi, 1);
print_options.paper_metrics.width = ConvertUnitDouble(
page_measurements.page_width, desired_dpi, 1);
}
print_options.paper_margins.left = ConvertUnitDouble(
requested_margins.left, desired_dpi, 1);
print_options.paper_margins.top = ConvertUnitDouble(
requested_margins.top, desired_dpi, 1);
print_options.paper_margins.right = ConvertUnitDouble(
requested_margins.right, desired_dpi, 1);
print_options.paper_margins.bottom = ConvertUnitDouble(
requested_margins.bottom, desired_dpi, 1);
print_options.paper_margins.header = ConvertUnitDouble(
requested_margins.header, desired_dpi, 1);
print_options.paper_margins.footer = ConvertUnitDouble(
requested_margins.footer, desired_dpi, 1);
}
void PrintSettings::UpdateFromPrintOptions(
const cef_print_options_t& print_options) {
landscape = print_options.page_orientation == LANDSCAPE;
page_measurements.page_type = print_options.paper_metrics.paper_type;
if (page_measurements.page_type == PT_CUSTOM) {
page_measurements.page_length = ConvertUnitDouble(
print_options.paper_metrics.length, 1, desired_dpi);
page_measurements.page_width = ConvertUnitDouble(
print_options.paper_metrics.width, 1, desired_dpi);
}
requested_margins.left = static_cast<int>(ConvertUnitDouble(
print_options.paper_margins.left, 1, desired_dpi));
requested_margins.top = static_cast<int>(ConvertUnitDouble(
print_options.paper_margins.top, 1, desired_dpi));
requested_margins.right = static_cast<int>(ConvertUnitDouble(
print_options.paper_margins.right, 1, desired_dpi));
requested_margins.bottom = static_cast<int>(ConvertUnitDouble(
print_options.paper_margins.bottom, 1, desired_dpi));
requested_margins.header = static_cast<int>(ConvertUnitDouble(
print_options.paper_margins.header, 1, desired_dpi));
requested_margins.footer = static_cast<int>(ConvertUnitDouble(
print_options.paper_margins.footer, 1, desired_dpi));
}
} // namespace printing