printing/printing_context_win.h

   1 // Copyright (c) 2011 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 PRINTING_PRINTING_CONTEXT_WIN_H_
   6 #define PRINTING_PRINTING_CONTEXT_WIN_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "printing/printing_context.h"
  12 #include "ui/gfx/native_widget_types.h"
  13
  14 namespace printing {
  15
  16 class PrintSettings;
  17
  18 class PRINTING_EXPORT PrintingContextWin : public PrintingContext {
  19  public:
  20   explicit PrintingContextWin(Delegate* delegate);
  21   virtual ~PrintingContextWin();
  22
  23   // PrintingContext implementation.
  24   virtual void AskUserForSettings(
  25       int max_pages,
  26       bool has_selection,
  27       const PrintSettingsCallback& callback) OVERRIDE;
  28   virtual Result UseDefaultSettings() OVERRIDE;
  29   virtual gfx::Size GetPdfPaperSizeDeviceUnits() OVERRIDE;
  30   virtual Result UpdatePrinterSettings(bool external_preview,
  31                                        bool show_system_dialog) OVERRIDE;
  32   virtual Result InitWithSettings(const PrintSettings& settings) OVERRIDE;
  33   virtual Result NewDocument(const base::string16& document_name) OVERRIDE;
  34   virtual Result NewPage() OVERRIDE;
  35   virtual Result PageDone() OVERRIDE;
  36   virtual Result DocumentDone() OVERRIDE;
  37   virtual void Cancel() OVERRIDE;
  38   virtual void ReleaseContext() OVERRIDE;
  39   virtual gfx::NativeDrawingContext context() const OVERRIDE;
  40
  41  protected:
  42   static HWND GetRootWindow(gfx::NativeView view);
  43
  44   // Reads the settings from the selected device context. Updates settings_ and
  45   // its margins.
  46   virtual Result InitializeSettings(const base::string16& device_name,
  47                                     DEVMODE* dev_mode);
  48
  49   HDC contest() const { return context_; }
  50
  51   void set_context(HDC context) { context_ = context; }
  52
  53  private:
  54   virtual scoped_ptr<DEVMODE, base::FreeDeleter> ShowPrintDialog(
  55       HANDLE printer,
  56       gfx::NativeView parent_view,
  57       DEVMODE* dev_mode);
  58
  59   // Used in response to the user canceling the printing.
  60   static BOOL CALLBACK AbortProc(HDC hdc, int nCode);
  61
  62   // The selected printer context.
  63   HDC context_;
  64
  65   DISALLOW_COPY_AND_ASSIGN(PrintingContextWin);
  66 };
  67
  68 }  // namespace printing
  69
  70 #endif  // PRINTING_PRINTING_CONTEXT_WIN_H_