root/printing/printing_context_linux.cc

DEFINITIONS

1. Create
2. print_dialog_
3. SetCreatePrintDialogFunction
4. SetPdfPaperSizeFunction
5. PrintDocument
6. AskUserForSettings
7. UseDefaultSettings
8. GetPdfPaperSizeDeviceUnits
9. UpdatePrinterSettings
10. InitWithSettings
11. NewDocument
12. NewPage
13. PageDone
14. DocumentDone
15. Cancel
16. ReleaseContext
17. context

// Copyright 2014 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_linux.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.
printing::PrintDialogGtkInterface* (*create_dialog_func_)(
    printing::PrintingContextLinux* context) = NULL;

// Function pointer for determining paper size.
gfx::Size (*get_pdf_paper_size_)(
    printing::PrintingContextLinux* context) = NULL;

}  // namespace

namespace printing {

// static
PrintingContext* PrintingContext::Create(const std::string& app_locale) {
  return static_cast<PrintingContext*>(new PrintingContextLinux(app_locale));
}

PrintingContextLinux::PrintingContextLinux(const std::string& app_locale)
    : PrintingContext(app_locale),
      print_dialog_(NULL) {
}

PrintingContextLinux::~PrintingContextLinux() {
  ReleaseContext();

  if (print_dialog_)
    print_dialog_->ReleaseDialog();
}

// static
void PrintingContextLinux::SetCreatePrintDialogFunction(
    PrintDialogGtkInterface* (*create_dialog_func)(
        PrintingContextLinux* context)) {
  DCHECK(create_dialog_func);
  DCHECK(!create_dialog_func_);
  create_dialog_func_ = create_dialog_func;
}

// static
void PrintingContextLinux::SetPdfPaperSizeFunction(
    gfx::Size (*get_pdf_paper_size)(PrintingContextLinux* context)) {
  DCHECK(get_pdf_paper_size);
  DCHECK(!get_pdf_paper_size_);
  get_pdf_paper_size_ = get_pdf_paper_size;
}

void PrintingContextLinux::PrintDocument(const Metafile* metafile) {
  DCHECK(print_dialog_);
  DCHECK(metafile);
  print_dialog_->PrintDocument(metafile, document_name_);
}

void PrintingContextLinux::AskUserForSettings(
    gfx::NativeView parent_view,
    int max_pages,
    bool has_selection,
    const PrintSettingsCallback& callback) {
  if (!print_dialog_) {
    // Can only get here if the renderer is sending bad messages.
    // http://crbug.com/341777
    NOTREACHED();
    callback.Run(FAILED);
    return;
  }

  print_dialog_->ShowDialog(parent_view, has_selection, callback);
}

PrintingContext::Result PrintingContextLinux::UseDefaultSettings() {
  DCHECK(!in_print_job_);

  ResetSettings();

  if (!create_dialog_func_)
    return OK;

  if (!print_dialog_) {
    print_dialog_ = create_dialog_func_(this);
    print_dialog_->AddRefToDialog();
  }
  print_dialog_->UseDefaultSettings();

  return OK;
}

gfx::Size PrintingContextLinux::GetPdfPaperSizeDeviceUnits() {
  if (get_pdf_paper_size_)
    return get_pdf_paper_size_(this);

  return gfx::Size();
}

PrintingContext::Result PrintingContextLinux::UpdatePrinterSettings(
    bool external_preview) {
  DCHECK(!in_print_job_);
  DCHECK(!external_preview) << "Not implemented";

  if (!create_dialog_func_)
    return OK;

  if (!print_dialog_) {
    print_dialog_ = create_dialog_func_(this);
    print_dialog_->AddRefToDialog();
  }

  if (!print_dialog_->UpdateSettings(&settings_))
    return OnError();

  return OK;
}

PrintingContext::Result PrintingContextLinux::InitWithSettings(
    const PrintSettings& settings) {
  DCHECK(!in_print_job_);

  settings_ = settings;

  return OK;
}

PrintingContext::Result PrintingContextLinux::NewDocument(
    const base::string16& document_name) {
  DCHECK(!in_print_job_);
  in_print_job_ = true;

  document_name_ = document_name;

  return OK;
}

PrintingContext::Result PrintingContextLinux::NewPage() {
  if (abort_printing_)
    return CANCEL;
  DCHECK(in_print_job_);

  // Intentional No-op.

  return OK;
}

PrintingContext::Result PrintingContextLinux::PageDone() {
  if (abort_printing_)
    return CANCEL;
  DCHECK(in_print_job_);

  // Intentional No-op.

  return OK;
}

PrintingContext::Result PrintingContextLinux::DocumentDone() {
  if (abort_printing_)
    return CANCEL;
  DCHECK(in_print_job_);

  ResetSettings();
  return OK;
}

void PrintingContextLinux::Cancel() {
  abort_printing_ = true;
  in_print_job_ = false;
}

void PrintingContextLinux::ReleaseContext() {
  // Intentional No-op.
}

gfx::NativeDrawingContext PrintingContextLinux::context() const {
  // Intentional No-op.
  return NULL;
}

}  // namespace printing