blob: dc922bf31c67d261e0884587bed35a4a37f42d23 [file] [log] [blame]
// Copyright 2014 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 "ui/gtk/printing/printing_gtk_util.h"
#include <gtk/gtk.h>
#include <gtk/gtkunixprint.h>
#include "base/strings/string16.h"
#include "base/strings/utf_string_conversions.h"
#include "printing/print_settings.h"
#include "printing/printing_context_linux.h"
#include "printing/units.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/geometry/size_f.h"
namespace {
const double kTopMarginInInch = 0.25;
const double kBottomMarginInInch = 0.56;
const double kLeftMarginInInch = 0.25;
const double kRightMarginInInch = 0.25;
} // namespace
gfx::Size GetPdfPaperSizeDeviceUnitsGtk(
printing::PrintingContextLinux* context) {
GtkPageSetup* page_setup = gtk_page_setup_new();
gfx::SizeF paper_size(
gtk_page_setup_get_paper_width(page_setup, GTK_UNIT_INCH),
gtk_page_setup_get_paper_height(page_setup, GTK_UNIT_INCH));
g_object_unref(page_setup);
const printing::PrintSettings& settings = context->settings();
return gfx::Size(paper_size.width() * settings.device_units_per_inch(),
paper_size.height() * settings.device_units_per_inch());
}
void InitPrintSettingsGtk(GtkPrintSettings* settings,
GtkPageSetup* page_setup,
printing::PrintSettings* print_settings) {
DCHECK(settings);
DCHECK(page_setup);
DCHECK(print_settings);
const char* printer_name = gtk_print_settings_get_printer(settings);
base::string16 name =
printer_name ? base::UTF8ToUTF16(printer_name) : base::string16();
print_settings->set_device_name(name);
gfx::Size physical_size_device_units;
gfx::Rect printable_area_device_units;
int dpi = gtk_print_settings_get_resolution(settings);
if (dpi) {
// Initialize page_setup_device_units_.
physical_size_device_units.SetSize(
gtk_page_setup_get_paper_width(page_setup, GTK_UNIT_INCH) * dpi,
gtk_page_setup_get_paper_height(page_setup, GTK_UNIT_INCH) * dpi);
printable_area_device_units.SetRect(
gtk_page_setup_get_left_margin(page_setup, GTK_UNIT_INCH) * dpi,
gtk_page_setup_get_top_margin(page_setup, GTK_UNIT_INCH) * dpi,
gtk_page_setup_get_page_width(page_setup, GTK_UNIT_INCH) * dpi,
gtk_page_setup_get_page_height(page_setup, GTK_UNIT_INCH) * dpi);
} else {
// Use default values if we cannot get valid values from the print dialog.
dpi = printing::kPixelsPerInch;
double page_width_in_pixel = printing::kLetterWidthInch * dpi;
double page_height_in_pixel = printing::kLetterHeightInch * dpi;
physical_size_device_units.SetSize(static_cast<int>(page_width_in_pixel),
static_cast<int>(page_height_in_pixel));
printable_area_device_units.SetRect(
static_cast<int>(kLeftMarginInInch * dpi),
static_cast<int>(kTopMarginInInch * dpi),
page_width_in_pixel - (kLeftMarginInInch + kRightMarginInInch) * dpi,
page_height_in_pixel - (kTopMarginInInch + kBottomMarginInInch) * dpi);
}
print_settings->set_dpi(dpi);
// Note: With the normal GTK print dialog, when the user selects the landscape
// orientation, all that does is change the paper size. Which seems to be
// enough to render the right output and send it to the printer.
// The orientation value stays as portrait and does not actually affect
// printing.
// Thus this is only useful in print preview mode, where we manually set the
// orientation and change the paper size ourselves.
GtkPageOrientation orientation = gtk_print_settings_get_orientation(settings);
// Set before SetPrinterPrintableArea to make it flip area if necessary.
print_settings->SetOrientation(orientation == GTK_PAGE_ORIENTATION_LANDSCAPE);
DCHECK_EQ(print_settings->device_units_per_inch(), dpi);
print_settings->SetPrinterPrintableArea(physical_size_device_units,
printable_area_device_units, true);
}