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