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| 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 <stddef.h> | |
| 10 #include <windows.graphics.printing.h> | |
| 11 #include <windows.ui.core.h> | |
| 12 | |
| 13 #include "base/synchronization/lock.h" | |
| 14 #include "base/threading/thread.h" | |
| 15 #include "win8/metro_driver/print_document_source.h" | |
| 16 #include "win8/metro_driver/winrt_utils.h" | |
| 17 | |
| 18 namespace base { | |
| 19 | |
| 20 class Lock; | |
| 21 | |
| 22 } // namespace base | |
| 23 | |
| 24 namespace metro_driver { | |
| 25 | |
| 26 // This class handles the print aspect of the devices charm. | |
| 27 class PrintHandler { | |
| 28 public: | |
| 29 PrintHandler(); | |
| 30 ~PrintHandler(); | |
| 31 | |
| 32 HRESULT Initialize(winui::Core::ICoreWindow* window); | |
| 33 | |
| 34 // Called by the exported C functions. | |
| 35 static void EnablePrinting(bool printing_enabled); | |
| 36 static void SetPageCount(size_t page_count); | |
| 37 static void AddPage(size_t page_number, IStream* metafile_stream); | |
| 38 static void ShowPrintUI(); | |
| 39 | |
| 40 private: | |
| 41 // Callbacks from Metro. | |
| 42 HRESULT OnPrintRequested( | |
| 43 wingfx::Printing::IPrintManager* print_mgr, | |
| 44 wingfx::Printing::IPrintTaskRequestedEventArgs* event_args); | |
| 45 | |
| 46 HRESULT OnPrintTaskSourceRequest( | |
| 47 wingfx::Printing::IPrintTaskSourceRequestedArgs* args); | |
| 48 | |
| 49 HRESULT OnCompleted(wingfx::Printing::IPrintTask* task, | |
| 50 wingfx::Printing::IPrintTaskCompletedEventArgs* args); | |
| 51 // Utility methods. | |
| 52 void ClearPrintTask(); | |
| 53 float GetLogicalDpi(); | |
| 54 | |
| 55 // Callback from Metro and entry point called on lockable thread. | |
| 56 HRESULT LogicalDpiChanged(IInspectable *sender); | |
| 57 static void OnLogicalDpiChanged(float dpi); | |
| 58 | |
| 59 // Called on the lockable thread to set/release the doc. | |
| 60 static void SetPrintDocumentSource( | |
| 61 const mswr::ComPtr<PrintDocumentSource>& print_document_source); | |
| 62 static void ReleasePrintDocumentSource(); | |
| 63 | |
| 64 // Called on the lockable thread for the exported C functions. | |
| 65 static void OnEnablePrinting(bool printing_enabled); | |
| 66 static void OnSetPageCount(size_t page_count); | |
| 67 static void OnAddPage(size_t page_number, | |
| 68 mswr::ComPtr<IStream> metafile_stream); | |
| 69 | |
| 70 // Opens the prit device charm. Must be called from the metro thread. | |
| 71 static void OnShowPrintUI(); | |
| 72 | |
| 73 mswr::ComPtr<wingfx::Printing::IPrintTask> print_task_; | |
| 74 EventRegistrationToken print_requested_token_; | |
| 75 EventRegistrationToken print_completed_token_; | |
| 76 EventRegistrationToken dpi_change_token_; | |
| 77 | |
| 78 mswr::ComPtr<wingfx::Printing::IPrintManager> print_manager_; | |
| 79 PrintDocumentSource::DirectXContext directx_context_; | |
| 80 | |
| 81 // Hack to give access to the Print Document from the C style entry points. | |
| 82 // This will go away once we can pass a pointer to this interface down to | |
| 83 // the Chrome Browser as we send the command to print. | |
| 84 static mswr::ComPtr<PrintDocumentSource> current_document_source_; | |
| 85 | |
| 86 // Another hack to enable/disable printing from an exported C function. | |
| 87 // TODO(mad): Find a better way to do this... | |
| 88 static bool printing_enabled_; | |
| 89 | |
| 90 // This is also a temporary hack until we can pass down the print document | |
| 91 // to Chrome so it can call directly into it. We need to lock the access to | |
| 92 // current_document_source_. | |
| 93 static base::Lock* lock_; | |
| 94 | |
| 95 // This thread is used to send blocking jobs | |
| 96 // out of threads we don't want to block. | |
| 97 static base::Thread* thread_; | |
| 98 }; | |
| 99 | |
| 100 } // namespace metro_driver | |
| 101 | |
| 102 // Exported C functions for Chrome to call into the Metro module. | |
| 103 extern "C" __declspec(dllexport) | |
| 104 void MetroEnablePrinting(BOOL printing_enabled); | |
| 105 | |
| 106 extern "C" __declspec(dllexport) | |
| 107 void MetroSetPrintPageCount(size_t page_count); | |
| 108 | |
| 109 extern "C" __declspec(dllexport) | |
| 110 void MetroSetPrintPageContent(size_t current_page, | |
| 111 void* data, | |
| 112 size_t data_size); | |
| 113 | |
| 114 extern "C" __declspec(dllexport) | |
| 115 void MetroShowPrintUI(); | |
| 116 | |
| 117 #endif // CHROME_BROWSER_UI_METRO_DRIVER_PRINT_HANDLER_H_ | |
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Chromium Code Reviews
Issue 1815463002:
Remove win8/metro_driver (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master