printing/printing_context_linux.cc

   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 #include "printing/printing_context_linux.h"
   6
   7 #include "base/logging.h"
   8 #include "base/values.h"
   9 #include "printing/metafile.h"
  10 #include "printing/print_dialog_gtk_interface.h"
  11 #include "printing/print_job_constants.h"
  12 #include "printing/units.h"
  13
  14 namespace {
  15
  16 // Function pointer for creating print dialogs. |callback| is only used when
  17 // |show_dialog| is true.
  18 printing::PrintDialogGtkInterface* (*create_dialog_func_)(
  19     printing::PrintingContextLinux* context) = NULL;
  20
  21 // Function pointer for determining paper size.
  22 gfx::Size (*get_pdf_paper_size_)(
  23     printing::PrintingContextLinux* context) = NULL;
  24
  25 }  // namespace
  26
  27 namespace printing {
  28
  29 // static
  30 scoped_ptr<PrintingContext> PrintingContext::Create(Delegate* delegate) {
  31   return make_scoped_ptr<PrintingContext>(new PrintingContextLinux(delegate));
  32 }
  33
  34 PrintingContextLinux::PrintingContextLinux(Delegate* delegate)
  35     : PrintingContext(delegate), print_dialog_(NULL) {
  36 }
  37
  38 PrintingContextLinux::~PrintingContextLinux() {
  39   ReleaseContext();
  40
  41   if (print_dialog_)
  42     print_dialog_->ReleaseDialog();
  43 }
  44
  45 // static
  46 void PrintingContextLinux::SetCreatePrintDialogFunction(
  47     PrintDialogGtkInterface* (*create_dialog_func)(
  48         PrintingContextLinux* context)) {
  49   DCHECK(create_dialog_func);
  50   DCHECK(!create_dialog_func_);
  51   create_dialog_func_ = create_dialog_func;
  52 }
  53
  54 // static
  55 void PrintingContextLinux::SetPdfPaperSizeFunction(
  56     gfx::Size (*get_pdf_paper_size)(PrintingContextLinux* context)) {
  57   DCHECK(get_pdf_paper_size);
  58   DCHECK(!get_pdf_paper_size_);
  59   get_pdf_paper_size_ = get_pdf_paper_size;
  60 }
  61
  62 void PrintingContextLinux::PrintDocument(const MetafilePlayer& metafile) {
  63   DCHECK(print_dialog_);
  64   print_dialog_->PrintDocument(metafile, document_name_);
  65 }
  66
  67 void PrintingContextLinux::AskUserForSettings(
  68     int max_pages,
  69     bool has_selection,
  70     const PrintSettingsCallback& callback) {
  71   if (!print_dialog_) {
  72     // Can only get here if the renderer is sending bad messages.
  73     // http://crbug.com/341777
  74     NOTREACHED();
  75     callback.Run(FAILED);
  76     return;
  77   }
  78
  79   print_dialog_->ShowDialog(
  80       delegate_->GetParentView(), has_selection, callback);
  81 }
  82
  83 PrintingContext::Result PrintingContextLinux::UseDefaultSettings() {
  84   DCHECK(!in_print_job_);
  85
  86   ResetSettings();
  87
  88   if (!create_dialog_func_)
  89     return OK;
  90
  91   if (!print_dialog_) {
  92     print_dialog_ = create_dialog_func_(this);
  93     print_dialog_->AddRefToDialog();
  94   }
  95   print_dialog_->UseDefaultSettings();
  96
  97   return OK;
  98 }
  99
 100 gfx::Size PrintingContextLinux::GetPdfPaperSizeDeviceUnits() {
 101   if (get_pdf_paper_size_)
 102     return get_pdf_paper_size_(this);
 103
 104   return gfx::Size();
 105 }
 106
 107 PrintingContext::Result PrintingContextLinux::UpdatePrinterSettings(
 108     bool external_preview,
 109     bool show_system_dialog) {
 110   DCHECK(!show_system_dialog);
 111   DCHECK(!in_print_job_);
 112   DCHECK(!external_preview) << "Not implemented";
 113
 114   if (!create_dialog_func_)
 115     return OK;
 116
 117   if (!print_dialog_) {
 118     print_dialog_ = create_dialog_func_(this);
 119     print_dialog_->AddRefToDialog();
 120   }
 121
 122   if (!print_dialog_->UpdateSettings(&settings_))
 123     return OnError();
 124
 125   return OK;
 126 }
 127
 128 PrintingContext::Result PrintingContextLinux::InitWithSettings(
 129     const PrintSettings& settings) {
 130   DCHECK(!in_print_job_);
 131
 132   settings_ = settings;
 133
 134   return OK;
 135 }
 136
 137 PrintingContext::Result PrintingContextLinux::NewDocument(
 138     const base::string16& document_name) {
 139   DCHECK(!in_print_job_);
 140   in_print_job_ = true;
 141
 142   document_name_ = document_name;
 143
 144   return OK;
 145 }
 146
 147 PrintingContext::Result PrintingContextLinux::NewPage() {
 148   if (abort_printing_)
 149     return CANCEL;
 150   DCHECK(in_print_job_);
 151
 152   // Intentional No-op.
 153
 154   return OK;
 155 }
 156
 157 PrintingContext::Result PrintingContextLinux::PageDone() {
 158   if (abort_printing_)
 159     return CANCEL;
 160   DCHECK(in_print_job_);
 161
 162   // Intentional No-op.
 163
 164   return OK;
 165 }
 166
 167 PrintingContext::Result PrintingContextLinux::DocumentDone() {
 168   if (abort_printing_)
 169     return CANCEL;
 170   DCHECK(in_print_job_);
 171
 172   ResetSettings();
 173   return OK;
 174 }
 175
 176 void PrintingContextLinux::Cancel() {
 177   abort_printing_ = true;
 178   in_print_job_ = false;
 179 }
 180
 181 void PrintingContextLinux::ReleaseContext() {
 182   // Intentional No-op.
 183 }
 184
 185 gfx::NativeDrawingContext PrintingContextLinux::context() const {
 186   // Intentional No-op.
 187   return NULL;
 188 }
 189
 190 }  // namespace printing