src/chrome/browser/ui/libgtk2ui/print_dialog_gtk2.h

   1 // Copyright 2014 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_UI_LIBGTK2UI_PRINT_DIALOG_GTK2_H_
   6 #define CHROME_BROWSER_UI_LIBGTK2UI_PRINT_DIALOG_GTK2_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 "chrome/browser/ui/libgtk2ui/gtk2_signal.h"
  16 #include "content/public/browser/browser_thread.h"
  17 #include "printing/print_dialog_gtk_interface.h"
  18 #include "printing/printing_context_linux.h"
  19 #include "ui/aura/window_observer.h"
  20
  21 namespace printing {
  22 class Metafile;
  23 class PrintSettings;
  24 }
  25
  26 using printing::PrintingContextLinux;
  27
  28 // Needs to be freed on the UI thread to clean up its GTK members variables.
  29 class PrintDialogGtk2
  30     : public printing::PrintDialogGtkInterface,
  31       public base::RefCountedThreadSafe<
  32           PrintDialogGtk2, content::BrowserThread::DeleteOnUIThread>,
  33       public aura::WindowObserver {
  34  public:
  35   // Creates and returns a print dialog.
  36   static printing::PrintDialogGtkInterface* CreatePrintDialog(
  37       PrintingContextLinux* context);
  38
  39   // printing::PrintDialogGtkInterface implementation.
  40   virtual void UseDefaultSettings() OVERRIDE;
  41   virtual bool UpdateSettings(printing::PrintSettings* settings) OVERRIDE;
  42   virtual void ShowDialog(
  43       gfx::NativeView parent_view,
  44       bool has_selection,
  45       const PrintingContextLinux::PrintSettingsCallback& callback) OVERRIDE;
  46   virtual void PrintDocument(const printing::Metafile* metafile,
  47                              const base::string16& document_name) OVERRIDE;
  48   virtual void AddRefToDialog() OVERRIDE;
  49   virtual void ReleaseDialog() OVERRIDE;
  50
  51  private:
  52   friend struct content::BrowserThread::DeleteOnThread<
  53       content::BrowserThread::UI>;
  54   friend class base::DeleteHelper<PrintDialogGtk2>;
  55
  56   explicit PrintDialogGtk2(PrintingContextLinux* context);
  57   virtual ~PrintDialogGtk2();
  58
  59   // Handles dialog response.
  60   CHROMEGTK_CALLBACK_1(PrintDialogGtk2, void, OnResponse, int);
  61
  62   // Prints document named |document_name|.
  63   void SendDocumentToPrinter(const base::string16& document_name);
  64
  65   // Handles print job response.
  66   static void OnJobCompletedThunk(GtkPrintJob* print_job,
  67                                   gpointer user_data,
  68                                   GError* error);
  69   void OnJobCompleted(GtkPrintJob* print_job, GError* error);
  70
  71   // Helper function for initializing |context_|'s PrintSettings with a given
  72   // |settings|.
  73   void InitPrintSettings(printing::PrintSettings* settings);
  74
  75   // aura::WindowObserver implementation.
  76   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
  77
  78   // Printing dialog callback.
  79   PrintingContextLinux::PrintSettingsCallback callback_;
  80   PrintingContextLinux* context_;
  81
  82   // Print dialog settings. PrintDialogGtk2 owns |dialog_| and holds references
  83   // to the other objects.
  84   GtkWidget* dialog_;
  85   GtkPrintSettings* gtk_settings_;
  86   GtkPageSetup* page_setup_;
  87   GtkPrinter* printer_;
  88
  89   base::FilePath path_to_pdf_;
  90
  91   DISALLOW_COPY_AND_ASSIGN(PrintDialogGtk2);
  92 };
  93
  94 #endif  // CHROME_BROWSER_UI_LIBGTK2UI_PRINT_DIALOG_GTK2_H_