Get printing working in Aura.

printing/printing_context_gtk.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_gtk.h"
+
+#include <gtk/gtk.h>
+#include <gtk/gtkprintunixdialog.h>
+
+#include "base/logging.h"
+#include "base/values.h"
+#include "printing/metafile.h"
+#include "printing/print_dialog_gtk_interface.h"
+#include "printing/print_job_constants.h"
+#include "printing/units.h"
+
+namespace {
+  // Function pointer for creating print dialogs. |callback| is only used when
+  // |show_dialog| is true.
+  static printing::PrintDialogGtkInterface* (*create_dialog_func_)(
+      printing::PrintingContextGtk* context) = NULL;
+}  // namespace
+
+namespace printing {
+
+// static
+PrintingContext* PrintingContext::Create(const std::string& app_locale) {
+  return static_cast<PrintingContext*>(new PrintingContextGtk(app_locale));
+}
+
+PrintingContextGtk::PrintingContextGtk(const std::string& app_locale)
+    : PrintingContext(app_locale),
+      print_dialog_(NULL) {
+}
+
+PrintingContextGtk::~PrintingContextGtk() {
+  ReleaseContext();
+
+  if (print_dialog_)
+    print_dialog_->ReleaseDialog();
+}
+
+// static
+void PrintingContextGtk::SetCreatePrintDialogFunction(
+    PrintDialogGtkInterface* (*create_dialog_func)(
+        PrintingContextGtk* context)) {
+  DCHECK(create_dialog_func);
+  DCHECK(!create_dialog_func_);
+  create_dialog_func_ = create_dialog_func;
+}
+
+void PrintingContextGtk::PrintDocument(const Metafile* metafile) {
+  DCHECK(print_dialog_);
+  DCHECK(metafile);
+  print_dialog_->PrintDocument(metafile, document_name_);
+}
+
+void PrintingContextGtk::AskUserForSettings(
+    gfx::NativeView parent_view,
+    int max_pages,
+    bool has_selection,
+    PrintSettingsCallback* callback) {
+  print_dialog_->ShowDialog(callback);
+}
+
+PrintingContext::Result PrintingContextGtk::UseDefaultSettings() {
+  DCHECK(!in_print_job_);
+
+  ResetSettings();
+  if (!print_dialog_) {
+    print_dialog_ = create_dialog_func_(this);
+    print_dialog_->AddRefToDialog();
+  }
+  print_dialog_->UseDefaultSettings();
+
+  return OK;
+}
+
+PrintingContext::Result PrintingContextGtk::UpdatePrinterSettings(
+    const DictionaryValue& job_settings, const PageRanges& ranges) {
+  DCHECK(!in_print_job_);
+
+  if (!print_dialog_) {
+    print_dialog_ = create_dialog_func_(this);
+    print_dialog_->AddRefToDialog();
+  }
+
+  if (!print_dialog_->UpdateSettings(job_settings, ranges, &settings_))
+    return OnError();
+
+  return OK;
+}
+
+PrintingContext::Result PrintingContextGtk::InitWithSettings(
+    const PrintSettings& settings) {
+  DCHECK(!in_print_job_);
+
+  settings_ = settings;
+
+  return OK;
+}
+
+PrintingContext::Result PrintingContextGtk::NewDocument(
+    const string16& document_name) {
+  DCHECK(!in_print_job_);
+  in_print_job_ = true;
+
+  document_name_ = document_name;
+
+  return OK;
+}
+
+PrintingContext::Result PrintingContextGtk::NewPage() {
+  if (abort_printing_)
+    return CANCEL;
+  DCHECK(in_print_job_);
+
+  // Intentional No-op.
+
+  return OK;
+}
+
+PrintingContext::Result PrintingContextGtk::PageDone() {
+  if (abort_printing_)
+    return CANCEL;
+  DCHECK(in_print_job_);
+
+  // Intentional No-op.
+
+  return OK;
+}
+
+PrintingContext::Result PrintingContextGtk::DocumentDone() {
+  if (abort_printing_)
+    return CANCEL;
+  DCHECK(in_print_job_);
+
+  ResetSettings();
+  return OK;
+}
+
+void PrintingContextGtk::Cancel() {
+  abort_printing_ = true;
+  in_print_job_ = false;
+}
+
+void PrintingContextGtk::ReleaseContext() {
+  // Intentional No-op.
+}
+
+gfx::NativeDrawingContext PrintingContextGtk::context() const {
+  // Intentional No-op.
+  return NULL;
+}
+
+}  // namespace printing
+