1 /* 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_X11_SHARED_X_DISPLAY_H_ 12 #define WEBRTC_MODULES_DESKTOP_CAPTURE_X11_SHARED_X_DISPLAY_H_ 13 14 #include <map> 15 #include <vector> 16 17 #include <assert.h> 18 #include <X11/Xlib.h> 19 20 #include <string> 21 22 #include "webrtc/base/scoped_ref_ptr.h" 23 #include "webrtc/system_wrappers/include/atomic32.h" 24 25 namespace webrtc { 26 27 // A ref-counted object to store XDisplay connection. 28 class SharedXDisplay { 29 public: 30 class XEventHandler { 31 public: 32 virtual ~XEventHandler() {} 33 34 // Processes XEvent. Returns true if the event has been handled. 35 virtual bool HandleXEvent(const XEvent& event) = 0; 36 }; 37 38 // Takes ownership of |display|. 39 explicit SharedXDisplay(Display* display); 40 41 // Creates a new X11 Display for the |display_name|. NULL is returned if X11 42 // connection failed. Equivalent to CreateDefault() when |display_name| is 43 // empty. 44 static rtc::scoped_refptr<SharedXDisplay> Create( 45 const std::string& display_name); 46 47 // Creates X11 Display connection for the default display (e.g. specified in 48 // DISPLAY). NULL is returned if X11 connection failed. 49 static rtc::scoped_refptr<SharedXDisplay> CreateDefault(); 50 51 void AddRef() { ++ref_count_; } 52 void Release() { 53 if (--ref_count_ == 0) 54 delete this; 55 } 56 57 Display* display() { return display_; } 58 59 // Adds a new event |handler| for XEvent's of |type|. 60 void AddEventHandler(int type, XEventHandler* handler); 61 62 // Removes event |handler| added using |AddEventHandler|. Doesn't do anything 63 // if |handler| is not registered. 64 void RemoveEventHandler(int type, XEventHandler* handler); 65 66 // Processes pending XEvents, calling corresponding event handlers. 67 void ProcessPendingXEvents(); 68 69 private: 70 typedef std::map<int, std::vector<XEventHandler*> > EventHandlersMap; 71 72 ~SharedXDisplay(); 73 74 Atomic32 ref_count_; 75 Display* display_; 76 77 EventHandlersMap event_handlers_; 78 79 RTC_DISALLOW_COPY_AND_ASSIGN(SharedXDisplay); 80 }; 81 82 } // namespace webrtc 83 84 #endif // WEBRTC_MODULES_DESKTOP_CAPTURE_X11_SHARED_X_DISPLAY_H_ 85
