1 /* 2 * Copyright 2003-2009, Haiku. 3 * Distributed under the terms of the MIT License. 4 * 5 * Authors: 6 * Michael Phipps 7 * Jérôme Duval, jerome.duval@free.fr 8 * Ryan Leavengood, leavengood@gmail.com 9 */ 10 11 12 #include "ScreenBlanker.h" 13 #include "ScreenSaverWindow.h" 14 15 #include <Application.h> 16 #include <View.h> 17 18 #include <WindowPrivate.h> 19 20 #include <syslog.h> 21 22 23 /* This message filter is what will close the screensaver upon user activity. */ 24 filter_result 25 ScreenSaverFilter::Filter(BMessage* message, BHandler** target) 26 { 27 // This guard is used to avoid sending multiple B_QUIT_REQUESTED messages 28 if (fEnabled) { 29 switch (message->what) { 30 case B_KEY_DOWN: 31 { 32 // we ignore the Print-Screen key to make screen shots of 33 // screen savers possible 34 int32 key; 35 if (message->FindInt32("key", &key) == B_OK && key == 0xe) 36 return B_DISPATCH_MESSAGE; 37 38 // Fall through 39 } 40 case B_MOUSE_MOVED: 41 { 42 // ignore the initial B_MOUSE_MOVED sent by the app_server 43 bool transitOnly = false; 44 if (message->FindBool("be:transit_only", &transitOnly) == B_OK 45 && transitOnly) 46 return B_DISPATCH_MESSAGE; 47 48 // Fall through 49 } 50 case B_MODIFIERS_CHANGED: 51 case B_UNMAPPED_KEY_DOWN: 52 case B_MOUSE_DOWN: 53 fEnabled = false; 54 be_app->PostMessage(B_QUIT_REQUESTED); 55 break; 56 } 57 } else if (message->what == B_KEY_DOWN) { 58 // Handle the escape key when the password window is showing 59 const char *string = NULL; 60 if (message->FindString("bytes", &string) == B_OK && string[0] == B_ESCAPE) 61 be_app->PostMessage(kMsgResumeSaver); 62 } 63 64 return B_DISPATCH_MESSAGE; 65 } 66 67 68 void 69 ScreenSaverFilter::SetEnabled(bool enabled) 70 { 71 fEnabled = enabled; 72 } 73 74 75 /*! 76 This is the BDirectWindow subclass that rendering occurs in. 77 A view is added to it so that BView based screensavers will work. 78 */ 79 ScreenSaverWindow::ScreenSaverWindow(BRect frame) 80 : BDirectWindow(frame, "ScreenSaver Window", 81 B_NO_BORDER_WINDOW_LOOK, kWindowScreenFeel, 82 B_NOT_RESIZABLE | B_NOT_ZOOMABLE, B_ALL_WORKSPACES), 83 fSaver(NULL) 84 { 85 frame.OffsetTo(0, 0); 86 fTopView = new BView(frame, "ScreenSaver View", B_FOLLOW_ALL, B_WILL_DRAW); 87 fTopView->SetViewColor(B_TRANSPARENT_COLOR); 88 89 fFilter = new ScreenSaverFilter(); 90 fTopView->AddFilter(fFilter); 91 92 AddChild(fTopView); 93 94 // Ensure that this view receives keyboard input 95 fTopView->MakeFocus(true); 96 fTopView->SetEventMask(B_KEYBOARD_EVENTS, 0); 97 } 98 99 100 ScreenSaverWindow::~ScreenSaverWindow() 101 { 102 Hide(); 103 } 104 105 106 void 107 ScreenSaverWindow::SetSaver(BScreenSaver *saver) 108 { 109 fSaver = saver; 110 } 111 112 113 void 114 ScreenSaverWindow::MessageReceived(BMessage *message) 115 { 116 switch (message->what) { 117 case kMsgEnableFilter: 118 fFilter->SetEnabled(true); 119 break; 120 121 default: 122 BWindow::MessageReceived(message); 123 break; 124 } 125 } 126 127 128 bool 129 ScreenSaverWindow::QuitRequested() 130 { 131 be_app->PostMessage(B_QUIT_REQUESTED); 132 return true; 133 } 134 135 136 void 137 ScreenSaverWindow::DirectConnected(direct_buffer_info *info) 138 { 139 if (fSaver) 140 fSaver->DirectConnected(info); 141 } 142 143