1 /* 2 * Copyright 2005-2013, 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 } 127 128 if (status != B_OK) { 129 // We found no configuration or it wasn't valid, try to fallback to 130 // sane values 131 status = screen->SetPreferredMode(); 132 if (status != B_OK) 133 status = screen->SetBestMode(1024, 768, B_RGB32, 60.f); 134 if (status != B_OK) 135 status = screen->SetBestMode(800, 600, B_RGB32, 60.f, false); 136 if (status != B_OK) { 137 debug_printf("app_server: Failed to set mode: %s\n", 138 strerror(status)); 139 140 delete item; 141 return status; 142 } 143 } 144 145 // TODO: this works only for single screen configurations 146 fDrawingEngine = screen->GetDrawingEngine(); 147 fHWInterface = screen->HWInterface(); 148 fFrame = screen->Frame(); 149 item->frame = fFrame; 150 151 fScreenList.AddItem(item); 152 153 return B_OK; 154 } 155 156 157 status_t 158 VirtualScreen::RemoveScreen(Screen* screen) 159 { 160 // not implemented yet (config changes when running) 161 return B_ERROR; 162 } 163 164 165 void 166 VirtualScreen::UpdateFrame() 167 { 168 int32 virtualWidth = 0, virtualHeight = 0; 169 170 for (int32 i = 0; i < fScreenList.CountItems(); i++) { 171 Screen* screen = fScreenList.ItemAt(i)->screen; 172 173 uint16 width, height; 174 uint32 colorSpace; 175 float frequency; 176 screen->GetMode(width, height, colorSpace, frequency); 177 178 // TODO: compute virtual size depending on the actual screen position! 179 virtualWidth += width; 180 virtualHeight = max_c(virtualHeight, height); 181 } 182 183 fFrame.Set(0, 0, virtualWidth - 1, virtualHeight - 1); 184 } 185 186 187 /*! Returns the smallest frame that spans over all screens 188 */ 189 BRect 190 VirtualScreen::Frame() const 191 { 192 return fFrame; 193 } 194 195 196 Screen* 197 VirtualScreen::ScreenAt(int32 index) const 198 { 199 screen_item* item = fScreenList.ItemAt(index); 200 if (item != NULL) 201 return item->screen; 202 203 return NULL; 204 } 205 206 207 Screen* 208 VirtualScreen::ScreenByID(int32 id) const 209 { 210 for (int32 i = fScreenList.CountItems(); i-- > 0;) { 211 screen_item* item = fScreenList.ItemAt(i); 212 213 if (item->screen->ID() == id || id == B_MAIN_SCREEN_ID.id) 214 return item->screen; 215 } 216 217 return NULL; 218 } 219 220 221 BRect 222 VirtualScreen::ScreenFrameAt(int32 index) const 223 { 224 screen_item* item = fScreenList.ItemAt(index); 225 if (item != NULL) 226 return item->frame; 227 228 return BRect(0, 0, 0, 0); 229 } 230 231 232 int32 233 VirtualScreen::CountScreens() const 234 { 235 return fScreenList.CountItems(); 236 } 237 238 239 status_t 240 VirtualScreen::_GetMode(Screen* screen, ScreenConfigurations& configurations, 241 display_mode& mode) const 242 { 243 monitor_info info; 244 bool hasInfo = screen->GetMonitorInfo(info) == B_OK; 245 246 screen_configuration* configuration = configurations.BestFit(screen->ID(), 247 hasInfo ? &info : NULL); 248 if (configuration == NULL) 249 return B_NAME_NOT_FOUND; 250 251 mode = configuration->mode; 252 configuration->is_current = true; 253 254 return B_OK; 255 } 256 257