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   ~PrintingContextWin() override;
  22
  23   // PrintingContext implementation.
  24   void AskUserForSettings(
  25       int max_pages,
  26       bool has_selection,
  27       bool is_scripted,
  28       const PrintSettingsCallback& callback) override;
  29   Result UseDefaultSettings() override;
  30   gfx::Size GetPdfPaperSizeDeviceUnits() override;
  31   Result UpdatePrinterSettings(bool external_preview,
  32                                bool show_system_dialog) override;
  33   Result InitWithSettings(const PrintSettings& settings) override;
  34   Result NewDocument(const base::string16& document_name) override;
  35   Result NewPage() override;
  36   Result PageDone() override;
  37   Result DocumentDone() override;
  38   void Cancel() override;
  39   void ReleaseContext() override;
  40   gfx::NativeDrawingContext context() const override;
  41
  42  protected:
  43   static HWND GetRootWindow(gfx::NativeView view);
  44
  45   // Reads the settings from the selected device context. Updates settings_ and
  46   // its margins.
  47   virtual Result InitializeSettings(const base::string16& device_name,
  48                                     DEVMODE* dev_mode);
  49
  50   HDC contest() const { return context_; }
  51
  52   void set_context(HDC context) { context_ = context; }
  53
  54  private:
  55   virtual scoped_ptr<DEVMODE, base::FreeDeleter> ShowPrintDialog(
  56       HANDLE printer,
  57       gfx::NativeView parent_view,
  58       DEVMODE* dev_mode);
  59
  60   // Used in response to the user canceling the printing.
  61   static BOOL CALLBACK AbortProc(HDC hdc, int nCode);
  62
  63   // The selected printer context.
  64   HDC context_;
  65
  66   DISALLOW_COPY_AND_ASSIGN(PrintingContextWin);
  67 };
  68
  69 }  // namespace printing
  70
  71 #endif  // PRINTING_PRINTING_CONTEXT_WIN_H_