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 "printing/printing_context.h"
  12 #include "ui/gfx/native_widget_types.h"
  13
  14 namespace printing {
  15
  16 class MetafileSkia;
  17 class PrintSettings;
  18
  19 class COMPONENT_EXPORT(PRINTING) PrintingContextWin : public PrintingContext {
  20  public:
  21   explicit PrintingContextWin(Delegate* delegate);
  22   PrintingContextWin(const PrintingContextWin&) = delete;
  23   PrintingContextWin& operator=(const PrintingContextWin&) = delete;
  24   ~PrintingContextWin() override;
  25
  26   // Prints the document contained in `metafile`.
  27   void PrintDocument(const std::wstring& device_name,
  28                      const MetafileSkia& metafile);
  29
  30   // Initializes with predefined settings.
  31   Result InitWithSettingsForTest(std::unique_ptr<PrintSettings> settings);
  32
  33   // PrintingContext implementation.
  34   void AskUserForSettings(int max_pages,
  35                           bool has_selection,
  36                           bool is_scripted,
  37                           PrintSettingsCallback callback) override;
  38   Result UseDefaultSettings() override;
  39   gfx::Size GetPdfPaperSizeDeviceUnits() override;
  40   Result UpdatePrinterSettings(bool external_preview,
  41                                bool show_system_dialog,
  42                                int page_count) override;
  43   Result NewDocument(const std::u16string& document_name) override;
  44   Result NewPage() override;
  45   Result PageDone() override;
  46   Result DocumentDone() override;
  47   void Cancel() override;
  48   void ReleaseContext() override;
  49   printing::NativeDrawingContext context() const override;
  50
  51  protected:
  52   static HWND GetRootWindow(gfx::NativeView view);
  53
  54   // Reads the settings from the selected device context. Updates settings_ and
  55   // its margins.
  56   virtual Result InitializeSettings(const std::wstring& device_name,
  57                                     DEVMODE* dev_mode);
  58
  59   void set_context(HDC context) { context_ = context; }
  60
  61  private:
  62   // Used in response to the user canceling the printing.
  63   static BOOL CALLBACK AbortProc(HDC hdc, int nCode);
  64
  65   // The selected printer context.
  66   HDC context_;
  67 };
  68
  69 }  // namespace printing
  70
  71 #endif  // PRINTING_PRINTING_CONTEXT_WIN_H_