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 <ocidl.h> 9 #include <commdlg.h> 10 11 #include <string> 12 13 #include "base/memory/scoped_ptr.h" 14 #include "build/build_config.h" 15 #include "printing/printing_context.h" 16 #include "ui/gfx/native_widget_types.h" 17 #include "ui/shell_dialogs/print_settings_dialog_win.h" 18 19 namespace printing { 20 21 class PRINTING_EXPORT PrintingContextWin 22 : public PrintingContext, 23 public ui::PrintSettingsDialogWin::Observer { 24 public: 25 explicit PrintingContextWin(const std::string& app_locale); 26 ~PrintingContextWin(); 27 28 // PrintingContext implementation. 29 virtual void AskUserForSettings( 30 gfx::NativeView parent_view, 31 int max_pages, 32 bool has_selection, 33 const PrintSettingsCallback& callback) OVERRIDE; 34 virtual Result UseDefaultSettings() OVERRIDE; 35 virtual gfx::Size GetPdfPaperSizeDeviceUnits() OVERRIDE; 36 virtual Result UpdatePrinterSettings(bool external_preview) OVERRIDE; 37 virtual Result InitWithSettings(const PrintSettings& settings) OVERRIDE; 38 virtual Result NewDocument(const base::string16& document_name) OVERRIDE; 39 virtual Result NewPage() OVERRIDE; 40 virtual Result PageDone() OVERRIDE; 41 virtual Result DocumentDone() OVERRIDE; 42 virtual void Cancel() OVERRIDE; 43 virtual void ReleaseContext() OVERRIDE; 44 virtual gfx::NativeDrawingContext context() const OVERRIDE; 45 46 // PrintSettingsDialogWin::Observer implementation: 47 virtual void PrintSettingsConfirmed(PRINTDLGEX* dialog_options) OVERRIDE; 48 virtual void PrintSettingsCancelled(PRINTDLGEX* dialog_options) OVERRIDE; 49 50 #if defined(UNIT_TEST) || defined(PRINTING_IMPLEMENTATION) 51 // Sets a fake PrintDlgEx function pointer in tests. SetPrintDialog(HRESULT (__stdcall * print_dialog_func)(LPPRINTDLGEX))52 void SetPrintDialog(HRESULT (__stdcall *print_dialog_func)(LPPRINTDLGEX)) { 53 print_dialog_func_ = print_dialog_func; 54 } 55 #endif // defined(UNIT_TEST) 56 57 // Allocates the HDC for a specific DEVMODE. 58 static bool AllocateContext(const std::wstring& printer_name, 59 const DEVMODE* dev_mode, 60 gfx::NativeDrawingContext* context); 61 62 private: 63 // Class that manages the PrintDlgEx() callbacks. This is meant to be a 64 // temporary object used during the Print... dialog display. 65 class CallbackHandler; 66 67 // Used in response to the user canceling the printing. 68 static BOOL CALLBACK AbortProc(HDC hdc, int nCode); 69 70 // Reads the settings from the selected device context. Updates settings_ and 71 // its margins. 72 bool InitializeSettings(const DEVMODE& dev_mode, 73 const std::wstring& new_device_name, 74 const PRINTPAGERANGE* ranges, 75 int number_ranges, 76 bool selection_only); 77 78 // Retrieves the printer's default low-level settings. On Windows, context_ is 79 // allocated with this call. 80 bool GetPrinterSettings(HANDLE printer, 81 const std::wstring& device_name); 82 83 // Parses the result of a PRINTDLGEX result. 84 Result ParseDialogResultEx(const PRINTDLGEX& dialog_options); 85 Result ParseDialogResult(const PRINTDLG& dialog_options); 86 87 // The selected printer context. 88 HDC context_; 89 90 // The dialog box for the time it is shown. 91 volatile HWND dialog_box_; 92 93 // Function pointer that defaults to PrintDlgEx. It can be changed using 94 // SetPrintDialog() in tests. 95 HRESULT (__stdcall *print_dialog_func_)(LPPRINTDLGEX); 96 97 // Where to notify when the dialog is closed. 98 PrintSettingsCallback callback_; 99 100 // Wrapper around native print dialog that runs it on a background thread. 101 scoped_refptr<ui::PrintSettingsDialogWin> print_settings_dialog_; 102 103 DISALLOW_COPY_AND_ASSIGN(PrintingContextWin); 104 }; 105 106 } // namespace printing 107 108 #endif // PRINTING_PRINTING_CONTEXT_WIN_H_ 109