OLD | NEW |
(Empty) | |
| 1 // Copyright (c) 2012 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 CHROME_BROWSER_UI_METRO_DRIVER_PRINT_HANDLER_H_ |
| 6 #define CHROME_BROWSER_UI_METRO_DRIVER_PRINT_HANDLER_H_ |
| 7 |
| 8 #include <windows.media.playto.h> |
| 9 #include <windows.graphics.printing.h> |
| 10 #include <windows.ui.core.h> |
| 11 |
| 12 #include "base/synchronization/lock.h" |
| 13 #include "base/threading/thread.h" |
| 14 #include "win8/metro_driver/print_document_source.h" |
| 15 #include "win8/metro_driver/winrt_utils.h" |
| 16 |
| 17 namespace base { |
| 18 |
| 19 class Lock; |
| 20 |
| 21 } // namespace base |
| 22 |
| 23 namespace metro_driver { |
| 24 |
| 25 // This class handles the print aspect of the devices charm. |
| 26 class PrintHandler { |
| 27 public: |
| 28 PrintHandler(); |
| 29 ~PrintHandler(); |
| 30 |
| 31 HRESULT Initialize(winui::Core::ICoreWindow* window); |
| 32 |
| 33 // Called by the exported C functions. |
| 34 static void EnablePrinting(bool printing_enabled); |
| 35 static void SetPageCount(size_t page_count); |
| 36 static void AddPage(size_t page_number, IStream* metafile_stream); |
| 37 static void ShowPrintUI(); |
| 38 |
| 39 private: |
| 40 // Callbacks from Metro. |
| 41 HRESULT OnPrintRequested( |
| 42 wingfx::Printing::IPrintManager* print_mgr, |
| 43 wingfx::Printing::IPrintTaskRequestedEventArgs* event_args); |
| 44 |
| 45 HRESULT OnPrintTaskSourceRequest( |
| 46 wingfx::Printing::IPrintTaskSourceRequestedArgs* args); |
| 47 |
| 48 HRESULT OnCompleted(wingfx::Printing::IPrintTask* task, |
| 49 wingfx::Printing::IPrintTaskCompletedEventArgs* args); |
| 50 // Utility methods. |
| 51 void ClearPrintTask(); |
| 52 float GetLogicalDpi(); |
| 53 |
| 54 // Callback from Metro and entry point called on lockable thread. |
| 55 HRESULT LogicalDpiChanged(IInspectable *sender); |
| 56 static void OnLogicalDpiChanged(float dpi); |
| 57 |
| 58 // Called on the lockable thread to set/release the doc. |
| 59 static void SetPrintDocumentSource( |
| 60 const mswr::ComPtr<PrintDocumentSource>& print_document_source); |
| 61 static void ReleasePrintDocumentSource(); |
| 62 |
| 63 // Called on the lockable thread for the exported C functions. |
| 64 static void OnEnablePrinting(bool printing_enabled); |
| 65 static void OnSetPageCount(size_t page_count); |
| 66 static void OnAddPage(size_t page_number, |
| 67 mswr::ComPtr<IStream> metafile_stream); |
| 68 |
| 69 // Opens the prit device charm. Must be called from the metro thread. |
| 70 static void OnShowPrintUI(); |
| 71 |
| 72 mswr::ComPtr<wingfx::Printing::IPrintTask> print_task_; |
| 73 EventRegistrationToken print_requested_token_; |
| 74 EventRegistrationToken print_completed_token_; |
| 75 EventRegistrationToken dpi_change_token_; |
| 76 |
| 77 mswr::ComPtr<wingfx::Printing::IPrintManager> print_manager_; |
| 78 PrintDocumentSource::DirectXContext directx_context_; |
| 79 |
| 80 // Hack to give access to the Print Document from the C style entry points. |
| 81 // This will go away once we can pass a pointer to this interface down to |
| 82 // the Chrome Browser as we send the command to print. |
| 83 static mswr::ComPtr<PrintDocumentSource> current_document_source_; |
| 84 |
| 85 // Another hack to enable/disable printing from an exported C function. |
| 86 // TODO(mad): Find a better way to do this... |
| 87 static bool printing_enabled_; |
| 88 |
| 89 // This is also a temporary hack until we can pass down the print document |
| 90 // to Chrome so it can call directly into it. We need to lock the access to |
| 91 // current_document_source_. |
| 92 static base::Lock* lock_; |
| 93 |
| 94 // This thread is used to send blocking jobs |
| 95 // out of threads we don't want to block. |
| 96 static base::Thread* thread_; |
| 97 }; |
| 98 |
| 99 } // namespace metro_driver |
| 100 |
| 101 // Exported C functions for Chrome to call into the Metro module. |
| 102 extern "C" __declspec(dllexport) |
| 103 void MetroEnablePrinting(BOOL printing_enabled); |
| 104 |
| 105 extern "C" __declspec(dllexport) |
| 106 void MetroSetPrintPageCount(size_t page_count); |
| 107 |
| 108 extern "C" __declspec(dllexport) |
| 109 void MetroSetPrintPageContent(size_t current_page, |
| 110 void* data, |
| 111 size_t data_size); |
| 112 |
| 113 extern "C" __declspec(dllexport) |
| 114 void MetroShowPrintUI(); |
| 115 |
| 116 #endif // CHROME_BROWSER_UI_METRO_DRIVER_PRINT_HANDLER_H_ |
OLD | NEW |