chrome/browser/printing/print_dialog_gtk.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_PRINTING_PRINT_DIALOG_GTK_H_
   6 #define CHROME_BROWSER_PRINTING_PRINT_DIALOG_GTK_H_
   7
   8 #include <gtk/gtk.h>
   9 #include <gtk/gtkunixprint.h>
  10
  11 #include "base/compiler_specific.h"
  12 #include "base/files/file_path.h"
  13 #include "base/memory/ref_counted.h"
  14 #include "base/sequenced_task_runner_helpers.h"
  15 #include "content/public/browser/browser_thread.h"
  16 #include "printing/print_dialog_gtk_interface.h"
  17 #include "printing/printing_context_linux.h"
  18 #include "ui/base/gtk/gtk_signal.h"
  19
  20 namespace printing {
  21 class Metafile;
  22 class PrintSettings;
  23 }
  24
  25 using printing::PrintingContextLinux;
  26
  27 // Needs to be freed on the UI thread to clean up its GTK members variables.
  28 class PrintDialogGtk
  29     : public printing::PrintDialogGtkInterface,
  30       public base::RefCountedThreadSafe<
  31           PrintDialogGtk, content::BrowserThread::DeleteOnUIThread> {
  32  public:
  33   // Creates and returns a print dialog.
  34   static printing::PrintDialogGtkInterface* CreatePrintDialog(
  35       PrintingContextLinux* context);
  36
  37   // printing::PrintDialogGtkInterface implementation.
  38   virtual void UseDefaultSettings() OVERRIDE;
  39   virtual bool UpdateSettings(printing::PrintSettings* settings) OVERRIDE;
  40   virtual void ShowDialog(
  41       gfx::NativeView parent_view,
  42       bool has_selection,
  43       const PrintingContextLinux::PrintSettingsCallback& callback) OVERRIDE;
  44   virtual void PrintDocument(const printing::Metafile* metafile,
  45                              const base::string16& document_name) OVERRIDE;
  46   virtual void AddRefToDialog() OVERRIDE;
  47   virtual void ReleaseDialog() OVERRIDE;
  48
  49  private:
  50   friend struct content::BrowserThread::DeleteOnThread<
  51       content::BrowserThread::UI>;
  52   friend class base::DeleteHelper<PrintDialogGtk>;
  53
  54   explicit PrintDialogGtk(PrintingContextLinux* context);
  55   virtual ~PrintDialogGtk();
  56
  57   // Handles dialog response.
  58   CHROMEGTK_CALLBACK_1(PrintDialogGtk, void, OnResponse, int);
  59
  60   // Prints document named |document_name|.
  61   void SendDocumentToPrinter(const base::string16& document_name);
  62
  63   // Handles print job response.
  64   static void OnJobCompletedThunk(GtkPrintJob* print_job,
  65                                   gpointer user_data,
  66                                   GError* error);
  67   void OnJobCompleted(GtkPrintJob* print_job, GError* error);
  68
  69   // Helper function for initializing |context_|'s PrintSettings with a given
  70   // |settings|.
  71   void InitPrintSettings(printing::PrintSettings* settings);
  72
  73   // Printing dialog callback.
  74   PrintingContextLinux::PrintSettingsCallback callback_;
  75   PrintingContextLinux* context_;
  76
  77   // Print dialog settings. PrintDialogGtk owns |dialog_| and holds references
  78   // to the other objects.
  79   GtkWidget* dialog_;
  80   GtkPrintSettings* gtk_settings_;
  81   GtkPageSetup* page_setup_;
  82   GtkPrinter* printer_;
  83
  84   base::FilePath path_to_pdf_;
  85
  86   DISALLOW_COPY_AND_ASSIGN(PrintDialogGtk);
  87 };
  88
  89 #endif  // CHROME_BROWSER_PRINTING_PRINT_DIALOG_GTK_H_