1 /* 2 * Copyright 2005-2009, Haiku. 3 * Distributed under the terms of the MIT License. 4 * 5 * Authors: 6 * Axel Dörfler, axeld@pinc-software.de 7 */ 8 9 10 #include "VirtualScreen.h" 11 12 #include "HWInterface.h" 13 #include "Desktop.h" 14 15 #include <new> 16 17 18 VirtualScreen::VirtualScreen() 19 : 20 fScreenList(4, true), 21 fDrawingEngine(NULL), 22 fHWInterface(NULL) 23 { 24 } 25 26 27 VirtualScreen::~VirtualScreen() 28 { 29 _Reset(); 30 } 31 32 33 void 34 VirtualScreen::_Reset() 35 { 36 ScreenList list; 37 for (int32 i = 0; i < fScreenList.CountItems(); i++) { 38 screen_item* item = fScreenList.ItemAt(i); 39 40 list.AddItem(item->screen); 41 } 42 43 gScreenManager->ReleaseScreens(list); 44 fScreenList.MakeEmpty(); 45 46 fFrame.Set(0, 0, 0, 0); 47 fDrawingEngine = NULL; 48 fHWInterface = NULL; 49 } 50 51 52 status_t 53 VirtualScreen::SetConfiguration(Desktop& desktop, 54 ScreenConfigurations& configurations, uint32* _changedScreens) 55 { 56 // Remember previous screen modes 57 58 typedef std::map<Screen*, display_mode> ScreenModeMap; 59 ScreenModeMap previousModes; 60 bool previousModesFailed = false; 61 62 if (_changedScreens != NULL) { 63 *_changedScreens = 0; 64 65 try { 66 for (int32 i = 0; i < fScreenList.CountItems(); i++) { 67 Screen* screen = fScreenList.ItemAt(i)->screen; 68 69 display_mode mode; 70 screen->GetMode(mode); 71 72 previousModes.insert(std::make_pair(screen, mode)); 73 } 74 } catch (...) { 75 previousModesFailed = true; 76 *_changedScreens = ~0L; 77 } 78 } 79 80 _Reset(); 81 82 ScreenList list; 83 status_t status = gScreenManager->AcquireScreens(&desktop, NULL, 0, 84 desktop.TargetScreen(), false, list); 85 if (status != B_OK) { 86 // TODO: we would try again here with force == true 87 return status; 88 } 89 90 for (int32 i = 0; i < list.CountItems(); i++) { 91 Screen* screen = list.ItemAt(i); 92 93 AddScreen(screen, configurations); 94 95 if (!previousModesFailed && _changedScreens != NULL) { 96 // Figure out which screens have changed their mode 97 display_mode mode; 98 screen->GetMode(mode); 99 100 ScreenModeMap::const_iterator found = previousModes.find(screen); 101 if (found != previousModes.end() 102 && memcmp(&mode, &found->second, sizeof(display_mode))) 103 *_changedScreens |= 1 << i; 104 } 105 } 106 107 UpdateFrame(); 108 return B_OK; 109 } 110 111 112 status_t 113 VirtualScreen::AddScreen(Screen* screen, ScreenConfigurations& configurations) 114 { 115 screen_item* item = new(std::nothrow) screen_item; 116 if (item == NULL) 117 return B_NO_MEMORY; 118 119 item->screen = screen; 120 121 status_t status = B_ERROR; 122 display_mode mode; 123 if (_GetMode(screen, configurations, mode) == B_OK) { 124 // we found settings for this screen, and try to apply them now 125 status = screen->SetMode(mode); 126 } 127 if (status != B_OK) { 128 status_t status = screen->SetPreferredMode(); 129 if (status != B_OK) 130 status = screen->SetBestMode(1024, 768, B_RGB32, 60.f); 131 if (status != B_OK) 132 screen->SetBestMode(800, 600, B_RGB32, 60.f, false); 133 } 134 135 // TODO: this works only for single screen configurations 136 fDrawingEngine = screen->GetDrawingEngine(); 137 fHWInterface = screen->HWInterface(); 138 fFrame = screen->Frame(); 139 item->frame = fFrame; 140 141 fScreenList.AddItem(item); 142 143 return B_OK; 144 } 145 146 147 status_t 148 VirtualScreen::RemoveScreen(Screen* screen) 149 { 150 // not implemented yet (config changes when running) 151 return B_ERROR; 152 } 153 154 155 void 156 VirtualScreen::UpdateFrame() 157 { 158 int32 virtualWidth = 0, virtualHeight = 0; 159 160 for (int32 i = 0; i < fScreenList.CountItems(); i++) { 161 Screen* screen = fScreenList.ItemAt(i)->screen; 162 163 uint16 width, height; 164 uint32 colorSpace; 165 float frequency; 166 screen->GetMode(width, height, colorSpace, frequency); 167 168 // TODO: compute virtual size depending on the actual screen position! 169 virtualWidth += width; 170 virtualHeight = max_c(virtualHeight, height); 171 } 172 173 fFrame.Set(0, 0, virtualWidth - 1, virtualHeight - 1); 174 } 175 176 177 /*! Returns the smallest frame that spans over all screens 178 */ 179 BRect 180 VirtualScreen::Frame() const 181 { 182 return fFrame; 183 } 184 185 186 Screen* 187 VirtualScreen::ScreenAt(int32 index) const 188 { 189 screen_item* item = fScreenList.ItemAt(index); 190 if (item != NULL) 191 return item->screen; 192 193 return NULL; 194 } 195 196 197 Screen* 198 VirtualScreen::ScreenByID(int32 id) const 199 { 200 for (int32 i = fScreenList.CountItems(); i-- > 0;) { 201 screen_item* item = fScreenList.ItemAt(i); 202 203 if (item->screen->ID() == id || id == B_MAIN_SCREEN_ID.id) 204 return item->screen; 205 } 206 207 return NULL; 208 } 209 210 211 BRect 212 VirtualScreen::ScreenFrameAt(int32 index) const 213 { 214 screen_item* item = fScreenList.ItemAt(index); 215 if (item != NULL) 216 return item->frame; 217 218 return BRect(0, 0, 0, 0); 219 } 220 221 222 int32 223 VirtualScreen::CountScreens() const 224 { 225 return fScreenList.CountItems(); 226 } 227 228 229 status_t 230 VirtualScreen::_GetMode(Screen* screen, ScreenConfigurations& configurations, 231 display_mode& mode) const 232 { 233 monitor_info info; 234 bool hasInfo = screen->GetMonitorInfo(info) == B_OK; 235 236 screen_configuration* configuration = configurations.BestFit(screen->ID(), 237 hasInfo ? &info : NULL); 238 if (configuration == NULL) 239 return B_NAME_NOT_FOUND; 240 241 mode = configuration->mode; 242 configuration->is_current = true; 243 244 return B_OK; 245 } 246 247