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