Get printing working in Aura.

printing/printing_context_no_system_dialog.cc

+// 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_no_system_dialog.h"
+
+#include <unicode/ulocdata.h>
+
+#include "base/logging.h"
+#include "base/values.h"
+#include "printing/metafile.h"
+#include "printing/print_job_constants.h"
+#include "printing/units.h"
+
+namespace printing {
+
+// static
+PrintingContext* PrintingContext::Create(const std::string& app_locale) {
+  return static_cast<PrintingContext*>(
+      new PrintingContextNoSystemDialog(app_locale));
+}
+
+PrintingContextNoSystemDialog::PrintingContextNoSystemDialog(
+    const std::string& app_locale) : PrintingContext(app_locale) {
+}
+
+PrintingContextNoSystemDialog::~PrintingContextNoSystemDialog() {
+  ReleaseContext();
+}
+
+void PrintingContextNoSystemDialog::AskUserForSettings(
+    gfx::NativeView parent_view,
+    int max_pages,
+    bool has_selection,
+    PrintSettingsCallback* callback) {
+  // We don't want to bring up a dialog here.  Ever.  Just signal the callback.
+  callback->Run(OK);
+}
+
+PrintingContext::Result PrintingContextNoSystemDialog::UseDefaultSettings() {
+  DCHECK(!in_print_job_);
+
+  ResetSettings();
+  // TODO(abodenha): Fetch these settings from the OS where possible.  See
+  // bug 102583.
+  // 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);
+
+  // Assume full page is printable for now.
+  printable_area_device_units.SetRect(0, 0, width, height);
+
+  settings_.set_dpi(dpi);
+  settings_.SetPrinterPrintableArea(physical_size_device_units,
+                                    printable_area_device_units,
+                                    dpi);
+
+  return OK;
+}
+
+PrintingContext::Result PrintingContextNoSystemDialog::UpdatePrinterSettings(
+    const DictionaryValue& job_settings, const PageRanges& ranges) {
+  bool landscape = false;
+
+  if (!job_settings.GetBoolean(kSettingLandscape, &landscape))
+    return OnError();
+
+  if (settings_.dpi() == 0)
+    UseDefaultSettings();
+
+  settings_.SetOrientation(landscape);
+  settings_.ranges = ranges;
+
+  return OK;
+}
+
+PrintingContext::Result PrintingContextNoSystemDialog::InitWithSettings(
+    const PrintSettings& settings) {
+  DCHECK(!in_print_job_);
+
+  settings_ = settings;
+
+  return OK;
+}
+
+PrintingContext::Result PrintingContextNoSystemDialog::NewDocument(
+    const string16& document_name) {
+  DCHECK(!in_print_job_);
+  in_print_job_ = true;
+
+  return OK;
+}
+
+PrintingContext::Result PrintingContextNoSystemDialog::NewPage() {
+  if (abort_printing_)
+    return CANCEL;
+  DCHECK(in_print_job_);
+
+  // Intentional No-op.
+
+  return OK;
+}
+
+PrintingContext::Result PrintingContextNoSystemDialog::PageDone() {
+  if (abort_printing_)
+    return CANCEL;
+  DCHECK(in_print_job_);
+
+  // Intentional No-op.
+
+  return OK;
+}
+
+PrintingContext::Result PrintingContextNoSystemDialog::DocumentDone() {
+  if (abort_printing_)
+    return CANCEL;
+  DCHECK(in_print_job_);
+
+  ResetSettings();
+  return OK;
+}
+
+void PrintingContextNoSystemDialog::Cancel() {
+  abort_printing_ = true;
+  in_print_job_ = false;
+}
+
+void PrintingContextNoSystemDialog::ReleaseContext() {
+  // Intentional No-op.
+}
+
+gfx::NativeDrawingContext PrintingContextNoSystemDialog::context() const {
+  // Intentional No-op.
+  return NULL;
+}
+
+}  // namespace printing
+