printing/printing_context_gtk.cc

   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 #include "printing/printing_context_gtk.h"
   6
   7 #include <gtk/gtk.h>
   8 #include <gtk/gtkunixprint.h>
   9
  10 #include "base/logging.h"
  11 #include "base/values.h"
  12 #include "printing/metafile.h"
  13 #include "printing/print_dialog_gtk_interface.h"
  14 #include "printing/print_job_constants.h"
  15 #include "printing/units.h"
  16
  17 namespace {
  18
  19 // Function pointer for creating print dialogs. |callback| is only used when
  20 // |show_dialog| is true.
  21 printing::PrintDialogGtkInterface* (*create_dialog_func_)(
  22     printing::PrintingContextGtk* context) = NULL;
  23
  24 }  // namespace
  25
  26 namespace printing {
  27
  28 // static
  29 PrintingContext* PrintingContext::Create(const std::string& app_locale) {
  30   return static_cast<PrintingContext*>(new PrintingContextGtk(app_locale));
  31 }
  32
  33 PrintingContextGtk::PrintingContextGtk(const std::string& app_locale)
  34     : PrintingContext(app_locale),
  35       print_dialog_(NULL) {
  36 }
  37
  38 PrintingContextGtk::~PrintingContextGtk() {
  39   ReleaseContext();
  40
  41   if (print_dialog_)
  42     print_dialog_->ReleaseDialog();
  43 }
  44
  45 // static
  46 void PrintingContextGtk::SetCreatePrintDialogFunction(
  47     PrintDialogGtkInterface* (*create_dialog_func)(
  48         PrintingContextGtk* context)) {
  49   DCHECK(create_dialog_func);
  50   DCHECK(!create_dialog_func_);
  51   create_dialog_func_ = create_dialog_func;
  52 }
  53
  54 void PrintingContextGtk::PrintDocument(const Metafile* metafile) {
  55   DCHECK(print_dialog_);
  56   DCHECK(metafile);
  57   print_dialog_->PrintDocument(metafile, document_name_);
  58 }
  59
  60 void PrintingContextGtk::AskUserForSettings(
  61     gfx::NativeView parent_view,
  62     int max_pages,
  63     bool has_selection,
  64     const PrintSettingsCallback& callback) {
  65   print_dialog_->ShowDialog(parent_view, has_selection, callback);
  66 }
  67
  68 PrintingContext::Result PrintingContextGtk::UseDefaultSettings() {
  69   DCHECK(!in_print_job_);
  70
  71   ResetSettings();
  72   if (!print_dialog_) {
  73     print_dialog_ = create_dialog_func_(this);
  74     print_dialog_->AddRefToDialog();
  75   }
  76   print_dialog_->UseDefaultSettings();
  77
  78   return OK;
  79 }
  80
  81 gfx::Size PrintingContextGtk::GetPdfPaperSizeDeviceUnits() {
  82   GtkPageSetup* page_setup = gtk_page_setup_new();
  83
  84   gfx::SizeF paper_size(
  85       gtk_page_setup_get_paper_width(page_setup, GTK_UNIT_INCH),
  86       gtk_page_setup_get_paper_height(page_setup, GTK_UNIT_INCH));
  87
  88   g_object_unref(page_setup);
  89
  90   return gfx::Size(
  91       paper_size.width() * settings_.device_units_per_inch(),
  92       paper_size.height() * settings_.device_units_per_inch());
  93 }
  94
  95 PrintingContext::Result PrintingContextGtk::UpdatePrinterSettings(
  96     bool external_preview) {
  97   DCHECK(!in_print_job_);
  98   DCHECK(!external_preview) << "Not implemented";
  99
 100   if (!print_dialog_) {
 101     print_dialog_ = create_dialog_func_(this);
 102     print_dialog_->AddRefToDialog();
 103   }
 104
 105   if (!print_dialog_->UpdateSettings(&settings_))
 106     return OnError();
 107
 108   return OK;
 109 }
 110
 111 PrintingContext::Result PrintingContextGtk::InitWithSettings(
 112     const PrintSettings& settings) {
 113   DCHECK(!in_print_job_);
 114
 115   settings_ = settings;
 116
 117   return OK;
 118 }
 119
 120 PrintingContext::Result PrintingContextGtk::NewDocument(
 121     const base::string16& document_name) {
 122   DCHECK(!in_print_job_);
 123   in_print_job_ = true;
 124
 125   document_name_ = document_name;
 126
 127   return OK;
 128 }
 129
 130 PrintingContext::Result PrintingContextGtk::NewPage() {
 131   if (abort_printing_)
 132     return CANCEL;
 133   DCHECK(in_print_job_);
 134
 135   // Intentional No-op.
 136
 137   return OK;
 138 }
 139
 140 PrintingContext::Result PrintingContextGtk::PageDone() {
 141   if (abort_printing_)
 142     return CANCEL;
 143   DCHECK(in_print_job_);
 144
 145   // Intentional No-op.
 146
 147   return OK;
 148 }
 149
 150 PrintingContext::Result PrintingContextGtk::DocumentDone() {
 151   if (abort_printing_)
 152     return CANCEL;
 153   DCHECK(in_print_job_);
 154
 155   ResetSettings();
 156   return OK;
 157 }
 158
 159 void PrintingContextGtk::Cancel() {
 160   abort_printing_ = true;
 161   in_print_job_ = false;
 162 }
 163
 164 void PrintingContextGtk::ReleaseContext() {
 165   // Intentional No-op.
 166 }
 167
 168 gfx::NativeDrawingContext PrintingContextGtk::context() const {
 169   // Intentional No-op.
 170   return NULL;
 171 }
 172
 173 }  // namespace printing
 174