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// Copyright (c) 2011 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_context_cairo.h"
#include "base/logging.h"
#include "base/values.h"
#include "printing/print_settings_initializer_gtk.h"
#include "printing/units.h"
#if defined(OS_CHROMEOS)
#include <unicode/ulocdata.h>
#else
#include <gtk/gtk.h>
#include <gtk/gtkprintunixdialog.h>
#endif // defined(OS_CHROMEOS)
#if !defined(OS_CHROMEOS)
namespace {
// Function pointer for creating print dialogs.
static void* (*create_dialog_func_)(
printing::PrintingContext::PrintSettingsCallback* callback,
printing::PrintingContextCairo* context) = NULL;
// Function pointer for printing documents.
static void (*print_document_func_)(
void* print_dialog,
const printing::NativeMetafile* metafile,
const string16& document_name) = NULL;
} // namespace
#endif // !defined(OS_CHROMEOS)
namespace printing {
// static
PrintingContext* PrintingContext::Create(const std::string& app_locale) {
return static_cast<PrintingContext*>(new PrintingContextCairo(app_locale));
}
PrintingContextCairo::PrintingContextCairo(const std::string& app_locale)
#if defined(OS_CHROMEOS)
: PrintingContext(app_locale) {
#else
: PrintingContext(app_locale),
print_dialog_(NULL) {
#endif
}
PrintingContextCairo::~PrintingContextCairo() {
ReleaseContext();
}
#if !defined(OS_CHROMEOS)
// static
void PrintingContextCairo::SetPrintingFunctions(
void* (*create_dialog_func)(PrintSettingsCallback* callback,
PrintingContextCairo* context),
void (*print_document_func)(void* print_dialog,
const NativeMetafile* metafile,
const string16& document_name)) {
DCHECK(create_dialog_func);
DCHECK(print_document_func);
DCHECK(!create_dialog_func_);
DCHECK(!print_document_func_);
create_dialog_func_ = create_dialog_func;
print_document_func_ = print_document_func;
}
void PrintingContextCairo::PrintDocument(const NativeMetafile* metafile) {
DCHECK(print_dialog_);
DCHECK(metafile);
print_document_func_(print_dialog_, metafile, document_name_);
}
#endif // !defined(OS_CHROMEOS)
void PrintingContextCairo::AskUserForSettings(
gfx::NativeView parent_view,
int max_pages,
bool has_selection,
PrintSettingsCallback* callback) {
#if defined(OS_CHROMEOS)
callback->Run(OK);
#else
print_dialog_ = create_dialog_func_(callback, this);
#endif // defined(OS_CHROMEOS)
}
PrintingContext::Result PrintingContextCairo::UseDefaultSettings() {
DCHECK(!in_print_job_);
ResetSettings();
#if defined(OS_CHROMEOS)
// For Chrome OS use default values based on the app locale rather than rely
// on GTK. Note that relying on the app locale does not work well if it is
// different from the system locale, e.g. a user using Chinese ChromeOS in the
// US. Eventually we need to get the defaults from the printer.
// TODO(sanjeevr): We need a better feedback loop between the cloud print
// dialog and this code.
int dpi = 300;
gfx::Size physical_size_device_units;
gfx::Rect printable_area_device_units;
int32_t width = 0;
int32_t height = 0;
UErrorCode error = U_ZERO_ERROR;
ulocdata_getPaperSize(app_locale_.c_str(), &height, &width, &error);
if (error != U_ZERO_ERROR) {
// If the call failed, assume a paper size of 8.5 x 11 inches.
LOG(WARNING) << "ulocdata_getPaperSize failed, using 8.5 x 11, error: "
<< error;
width = static_cast<int>(8.5 * dpi);
height = static_cast<int>(11 * dpi);
} else {
// ulocdata_getPaperSize returns the width and height in mm.
// Convert this to pixels based on the dpi.
width = static_cast<int>(ConvertUnitDouble(width, 25.4, 1.0) * dpi);
height = static_cast<int>(ConvertUnitDouble(height, 25.4, 1.0) * dpi);
}
physical_size_device_units.SetSize(width, height);
printable_area_device_units.SetRect(
static_cast<int>(PrintSettingsInitializerGtk::kLeftMarginInInch * dpi),
static_cast<int>(PrintSettingsInitializerGtk::kTopMarginInInch * dpi),
width - (PrintSettingsInitializerGtk::kLeftMarginInInch +
PrintSettingsInitializerGtk::kRightMarginInInch) * dpi,
height - (PrintSettingsInitializerGtk::kTopMarginInInch +
PrintSettingsInitializerGtk::kBottomMarginInInch) * dpi);
settings_.set_dpi(dpi);
settings_.SetPrinterPrintableArea(physical_size_device_units,
printable_area_device_units,
dpi);
#else // defined(OS_CHROMEOS)
GtkWidget* dialog = gtk_print_unix_dialog_new(NULL, NULL);
GtkPrintSettings* settings =
gtk_print_unix_dialog_get_settings(GTK_PRINT_UNIX_DIALOG(dialog));
GtkPageSetup* page_setup =
gtk_print_unix_dialog_get_page_setup(GTK_PRINT_UNIX_DIALOG(dialog));
PageRanges ranges_vector; // Nothing to initialize for default settings.
PrintSettingsInitializerGtk::InitPrintSettings(
settings, page_setup, ranges_vector, false, &settings_);
g_object_unref(settings);
// |page_setup| is owned by dialog, so it does not need to be unref'ed.
gtk_widget_destroy(dialog);
#endif // defined(OS_CHROMEOS)
return OK;
}
PrintingContext::Result PrintingContextCairo::UpdatePrintSettings(
const DictionaryValue& job_settings, const PageRanges& ranges) {
DCHECK(!in_print_job_);
bool landscape;
if (!GetSettingsFromDict(job_settings, &landscape, NULL))
return OnError();
settings_.SetOrientation(landscape);
settings_.ranges = ranges;
// TODO(kmadhusu): Update other print settings such as number of copies,
// collate, duplex printing, etc.,
return OK;
}
PrintingContext::Result PrintingContextCairo::InitWithSettings(
const PrintSettings& settings) {
DCHECK(!in_print_job_);
settings_ = settings;
return OK;
}
PrintingContext::Result PrintingContextCairo::NewDocument(
const string16& document_name) {
DCHECK(!in_print_job_);
in_print_job_ = true;
#if !defined(OS_CHROMEOS)
document_name_ = document_name;
#endif // !defined(OS_CHROMEOS)
return OK;
}
PrintingContext::Result PrintingContextCairo::NewPage() {
if (abort_printing_)
return CANCEL;
DCHECK(in_print_job_);
// Intentional No-op.
return OK;
}
PrintingContext::Result PrintingContextCairo::PageDone() {
if (abort_printing_)
return CANCEL;
DCHECK(in_print_job_);
// Intentional No-op.
return OK;
}
PrintingContext::Result PrintingContextCairo::DocumentDone() {
if (abort_printing_)
return CANCEL;
DCHECK(in_print_job_);
ResetSettings();
return OK;
}
void PrintingContextCairo::Cancel() {
abort_printing_ = true;
in_print_job_ = false;
}
void PrintingContextCairo::ReleaseContext() {
// Intentional No-op.
}
gfx::NativeDrawingContext PrintingContextCairo::context() const {
// Intentional No-op.
return NULL;
}
} // namespace printing
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