| 1 | //go:build windows |
| 2 | |
| 3 | package systray |
| 4 | |
| 5 | import ( |
| 6 | "crypto/md5" |
| 7 | "encoding/hex" |
| 8 | "errors" |
| 9 | "fmt" |
| 10 | "io/ioutil" |
| 11 | "log" |
| 12 | "os" |
| 13 | "path/filepath" |
| 14 | "sort" |
| 15 | "strings" |
| 16 | "sync" |
| 17 | "sync/atomic" |
| 18 | "syscall" |
| 19 | "unsafe" |
| 20 | |
| 21 | "golang.org/x/sys/windows" |
| 22 | ) |
| 23 | |
| 24 | // Helpful sources: https://github.com/golang/exp/blob/master/shiny/driver/internal/win32 |
| 25 | |
| 26 | var ( |
| 27 | g32 = windows.NewLazySystemDLL("Gdi32.dll") |
| 28 | pCreateCompatibleBitmap = g32.NewProc("CreateCompatibleBitmap") |
| 29 | pCreateCompatibleDC = g32.NewProc("CreateCompatibleDC") |
| 30 | pCreateDIBSection = g32.NewProc("CreateDIBSection") |
| 31 | pDeleteDC = g32.NewProc("DeleteDC") |
| 32 | pSelectObject = g32.NewProc("SelectObject") |
| 33 | |
| 34 | k32 = windows.NewLazySystemDLL("Kernel32.dll") |
| 35 | pGetModuleHandle = k32.NewProc("GetModuleHandleW") |
| 36 | |
| 37 | s32 = windows.NewLazySystemDLL("Shell32.dll") |
| 38 | pShellNotifyIcon = s32.NewProc("Shell_NotifyIconW") |
| 39 | |
| 40 | u32 = windows.NewLazySystemDLL("User32.dll") |
| 41 | pCreateMenu = u32.NewProc("CreateMenu") |
| 42 | pCreatePopupMenu = u32.NewProc("CreatePopupMenu") |
| 43 | pCreateWindowEx = u32.NewProc("CreateWindowExW") |
| 44 | pDefWindowProc = u32.NewProc("DefWindowProcW") |
| 45 | pDeleteMenu = u32.NewProc("DeleteMenu") |
| 46 | pDestroyMenu = u32.NewProc("DestroyMenu") |
| 47 | pRemoveMenu = u32.NewProc("RemoveMenu") |
| 48 | pDestroyWindow = u32.NewProc("DestroyWindow") |
| 49 | pDispatchMessage = u32.NewProc("DispatchMessageW") |
| 50 | pDrawIconEx = u32.NewProc("DrawIconEx") |
| 51 | pGetCursorPos = u32.NewProc("GetCursorPos") |
| 52 | pGetDC = u32.NewProc("GetDC") |
| 53 | pGetMessage = u32.NewProc("GetMessageW") |
| 54 | pGetSystemMetrics = u32.NewProc("GetSystemMetrics") |
| 55 | pInsertMenuItem = u32.NewProc("InsertMenuItemW") |
| 56 | pLoadCursor = u32.NewProc("LoadCursorW") |
| 57 | pLoadIcon = u32.NewProc("LoadIconW") |
| 58 | pLoadImage = u32.NewProc("LoadImageW") |
| 59 | pPostMessage = u32.NewProc("PostMessageW") |
| 60 | pPostQuitMessage = u32.NewProc("PostQuitMessage") |
| 61 | pRegisterClass = u32.NewProc("RegisterClassExW") |
| 62 | pRegisterWindowMessage = u32.NewProc("RegisterWindowMessageW") |
| 63 | pReleaseDC = u32.NewProc("ReleaseDC") |
| 64 | pSetForegroundWindow = u32.NewProc("SetForegroundWindow") |
| 65 | pSetMenuInfo = u32.NewProc("SetMenuInfo") |
| 66 | pSetMenuItemInfo = u32.NewProc("SetMenuItemInfoW") |
| 67 | pShowWindow = u32.NewProc("ShowWindow") |
| 68 | pTrackPopupMenu = u32.NewProc("TrackPopupMenu") |
| 69 | pTranslateMessage = u32.NewProc("TranslateMessage") |
| 70 | pUnregisterClass = u32.NewProc("UnregisterClassW") |
| 71 | pUpdateWindow = u32.NewProc("UpdateWindow") |
| 72 | |
| 73 | // ErrTrayNotReadyYet is returned by functions when they are called before the tray has been initialized. |
| 74 | ErrTrayNotReadyYet = errors.New("tray not ready yet") |
| 75 | ) |
| 76 | |
| 77 | // Contains window class information. |
| 78 | // It is used with the RegisterClassEx and GetClassInfoEx functions. |
| 79 | // https://msdn.microsoft.com/en-us/library/ms633577.aspx |
| 80 | type wndClassEx struct { |
| 81 | Size, Style uint32 |
| 82 | WndProc uintptr |
| 83 | ClsExtra, WndExtra int32 |
| 84 | Instance, Icon, Cursor, Background windows.Handle |
| 85 | MenuName, ClassName *uint16 |
| 86 | IconSm windows.Handle |
| 87 | } |
| 88 | |
| 89 | // Registers a window class for subsequent use in calls to the CreateWindow or CreateWindowEx function. |
| 90 | // https://msdn.microsoft.com/en-us/library/ms633587.aspx |
| 91 | func (w *wndClassEx) register() error { |
| 92 | w.Size = uint32(unsafe.Sizeof(*w)) |
| 93 | res, _, err := pRegisterClass.Call(uintptr(unsafe.Pointer(w))) |
| 94 | if res == 0 { |
| 95 | return err |
| 96 | } |
| 97 | return nil |
| 98 | } |
| 99 | |
| 100 | // Unregisters a window class, freeing the memory required for the class. |
| 101 | // https://msdn.microsoft.com/en-us/library/ms644899.aspx |
| 102 | func (w *wndClassEx) unregister() error { |
| 103 | res, _, err := pUnregisterClass.Call( |
| 104 | uintptr(unsafe.Pointer(w.ClassName)), |
| 105 | uintptr(w.Instance), |
| 106 | ) |
| 107 | if res == 0 { |
| 108 | return err |
| 109 | } |
| 110 | return nil |
| 111 | } |
| 112 | |
| 113 | // Contains information that the system needs to display notifications in the notification area. |
| 114 | // Used by Shell_NotifyIcon. |
| 115 | // https://msdn.microsoft.com/en-us/library/windows/desktop/bb773352(v=vs.85).aspx |
| 116 | // https://msdn.microsoft.com/en-us/library/windows/desktop/bb762159 |
| 117 | type notifyIconData struct { |
| 118 | Size uint32 |
| 119 | Wnd windows.Handle |
| 120 | ID, Flags, CallbackMessage uint32 |
| 121 | Icon windows.Handle |
| 122 | Tip [128]uint16 |
| 123 | State, StateMask uint32 |
| 124 | Info [256]uint16 |
| 125 | TimeoutOrVersion uint32 // uTimeout and uVersion share one native union. |
| 126 | InfoTitle [64]uint16 |
| 127 | InfoFlags uint32 |
| 128 | GuidItem windows.GUID |
| 129 | BalloonIcon windows.Handle |
| 130 | } |
| 131 | |
| 132 | var shellNotifyIcon = pShellNotifyIcon.Call |
| 133 | |
| 134 | func (nid *notifyIconData) add() error { |
| 135 | const NIM_ADD = 0x00000000 |
| 136 | res, _, err := shellNotifyIcon( |
| 137 | uintptr(NIM_ADD), |
| 138 | uintptr(unsafe.Pointer(nid)), |
| 139 | ) |
| 140 | if res == 0 { |
| 141 | return err |
| 142 | } |
| 143 | return nil |
| 144 | } |
| 145 | |
| 146 | func (nid *notifyIconData) modify() error { |
| 147 | const NIM_MODIFY = 0x00000001 |
| 148 | res, _, err := shellNotifyIcon( |
| 149 | uintptr(NIM_MODIFY), |
| 150 | uintptr(unsafe.Pointer(nid)), |
| 151 | ) |
| 152 | if res == 0 { |
| 153 | return err |
| 154 | } |
| 155 | return nil |
| 156 | } |
| 157 | |
| 158 | func (nid *notifyIconData) delete() error { |
| 159 | const NIM_DELETE = 0x00000002 |
| 160 | res, _, err := shellNotifyIcon( |
| 161 | uintptr(NIM_DELETE), |
| 162 | uintptr(unsafe.Pointer(nid)), |
| 163 | ) |
| 164 | if res == 0 { |
| 165 | return err |
| 166 | } |
| 167 | return nil |
| 168 | } |
| 169 | |
| 170 | // Contains information about a menu item. |
| 171 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ms647578(v=vs.85).aspx |
| 172 | type menuItemInfo struct { |
| 173 | Size, Mask, Type, State uint32 |
| 174 | ID uint32 |
| 175 | SubMenu, Checked, Unchecked windows.Handle |
| 176 | ItemData uintptr |
| 177 | TypeData *uint16 |
| 178 | Cch uint32 |
| 179 | BMPItem windows.Handle |
| 180 | } |
| 181 | |
| 182 | // The POINT structure defines the x- and y- coordinates of a point. |
| 183 | // https://msdn.microsoft.com/en-us/library/windows/desktop/dd162805(v=vs.85).aspx |
| 184 | type point struct { |
| 185 | X, Y int32 |
| 186 | } |
| 187 | |
| 188 | // The BITMAPINFO structure defines the dimensions and color information for a DIB. |
| 189 | // https://learn.microsoft.com/en-us/windows/win32/api/wingdi/ns-wingdi-bitmapinfo |
| 190 | type bitmapInfo struct { |
| 191 | BmiHeader bitmapInfoHeader |
| 192 | BmiColors windows.Handle |
| 193 | } |
| 194 | |
| 195 | // The BITMAPINFOHEADER structure contains information about the dimensions and color format of a device-independent bitmap (DIB). |
| 196 | // https://learn.microsoft.com/en-us/previous-versions/dd183376(v=vs.85) |
| 197 | // https://learn.microsoft.com/en-us/windows/win32/api/wingdi/ns-wingdi-bitmapinfoheader |
| 198 | type bitmapInfoHeader struct { |
| 199 | BiSize uint32 |
| 200 | BiWidth int32 |
| 201 | BiHeight int32 |
| 202 | BiPlanes uint16 |
| 203 | BiBitCount uint16 |
| 204 | BiCompression uint32 |
| 205 | BiSizeImage uint32 |
| 206 | BiXPelsPerMeter int32 |
| 207 | BiYPelsPerMeter int32 |
| 208 | BiClrUsed uint32 |
| 209 | BiClrImportant uint32 |
| 210 | } |
| 211 | |
| 212 | // Contains information about loaded resources |
| 213 | type winTray struct { |
| 214 | instance, |
| 215 | icon, |
| 216 | cursor, |
| 217 | window windows.Handle |
| 218 | |
| 219 | loadedImages map[string]windows.Handle |
| 220 | muLoadedImages sync.RWMutex |
| 221 | // menus keeps track of the submenus keyed by the menu item ID, plus 0 |
| 222 | // which corresponds to the main popup menu. |
| 223 | menus map[uint32]windows.Handle |
| 224 | muMenus sync.RWMutex |
| 225 | // menuOf keeps track of the menu each menu item belongs to. |
| 226 | menuOf map[uint32]windows.Handle |
| 227 | muMenuOf sync.RWMutex |
| 228 | // menuItemIcons maintains the bitmap of each menu item (if applies). It's |
| 229 | // needed to show the icon correctly when showing a previously hidden menu |
| 230 | // item again. |
| 231 | menuItemIcons map[uint32]windows.Handle |
| 232 | muMenuItemIcons sync.RWMutex |
| 233 | visibleItems map[uint32][]uint32 |
| 234 | muVisibleItems sync.RWMutex |
| 235 | |
| 236 | nid *notifyIconData |
| 237 | muNID sync.RWMutex |
| 238 | wcex *wndClassEx |
| 239 | |
| 240 | wmSystrayMessage, |
| 241 | wmTaskbarCreated uint32 |
| 242 | |
| 243 | initialized atomic.Bool |
| 244 | iconGUID windows.GUID |
| 245 | useIconGUID bool |
| 246 | } |
| 247 | |
| 248 | // isReady checks if the tray as already been initialized. It is not goroutine safe with in regard to the initialization function, but prevents a panic when functions are called too early. |
| 249 | func (t *winTray) isReady() bool { |
| 250 | return t.initialized.Load() |
| 251 | } |
| 252 | |
| 253 | // Loads an image from file and shows it in tray. |
| 254 | // Shell_NotifyIcon: https://msdn.microsoft.com/en-us/library/windows/desktop/bb762159(v=vs.85).aspx |
| 255 | func (t *winTray) setIcon(src string) error { |
| 256 | if !wt.isReady() { |
| 257 | return ErrTrayNotReadyYet |
| 258 | } |
| 259 | |
| 260 | const NIF_ICON = 0x00000002 |
| 261 | |
| 262 | h, err := t.loadIconFrom(src) |
| 263 | if err != nil { |
| 264 | return err |
| 265 | } |
| 266 | |
| 267 | t.muNID.Lock() |
| 268 | defer t.muNID.Unlock() |
| 269 | t.nid.Icon = h |
| 270 | t.nid.Flags |= NIF_ICON |
| 271 | t.nid.Size = uint32(unsafe.Sizeof(*t.nid)) |
| 272 | |
| 273 | return t.nid.modify() |
| 274 | } |
| 275 | |
| 276 | // Sets tooltip on icon. |
| 277 | // Shell_NotifyIcon: https://msdn.microsoft.com/en-us/library/windows/desktop/bb762159(v=vs.85).aspx |
| 278 | func (t *winTray) setTooltip(src string) error { |
| 279 | if !wt.isReady() { |
| 280 | return ErrTrayNotReadyYet |
| 281 | } |
| 282 | |
| 283 | const NIF_TIP = 0x00000004 |
| 284 | b, err := windows.UTF16FromString(src) |
| 285 | if err != nil { |
| 286 | return err |
| 287 | } |
| 288 | |
| 289 | t.muNID.Lock() |
| 290 | defer t.muNID.Unlock() |
| 291 | copy(t.nid.Tip[:], b[:]) |
| 292 | t.nid.Flags |= NIF_TIP |
| 293 | t.nid.Size = uint32(unsafe.Sizeof(*t.nid)) |
| 294 | |
| 295 | return t.nid.modify() |
| 296 | } |
| 297 | |
| 298 | var wt = winTray{} |
| 299 | |
| 300 | // WindowProc callback function that processes messages sent to a window. |
| 301 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ms633573(v=vs.85).aspx |
| 302 | func (t *winTray) wndProc(hWnd windows.Handle, message uint32, wParam, lParam uintptr) (lResult uintptr) { |
| 303 | const ( |
| 304 | WM_RBUTTONUP = 0x0205 |
| 305 | WM_LBUTTONUP = 0x0202 |
| 306 | WM_COMMAND = 0x0111 |
| 307 | WM_ENDSESSION = 0x0016 |
| 308 | WM_CLOSE = 0x0010 |
| 309 | WM_DESTROY = 0x0002 |
| 310 | ) |
| 311 | switch message { |
| 312 | case WM_COMMAND: |
| 313 | menuItemId := int32(wParam) |
| 314 | // https://docs.microsoft.com/en-us/windows/win32/menurc/wm-command#menus |
| 315 | if menuItemId != -1 { |
| 316 | systrayMenuItemSelected(uint32(wParam)) |
| 317 | } |
| 318 | case WM_CLOSE: |
| 319 | pDestroyWindow.Call(uintptr(t.window)) |
| 320 | t.wcex.unregister() |
| 321 | case WM_DESTROY: |
| 322 | // same as WM_ENDSESSION, but throws 0 exit code after all |
| 323 | defer pPostQuitMessage.Call(uintptr(int32(0))) |
| 324 | fallthrough |
| 325 | case WM_ENDSESSION: |
| 326 | t.muNID.Lock() |
| 327 | if t.nid != nil { |
| 328 | t.nid.delete() |
| 329 | } |
| 330 | t.muNID.Unlock() |
| 331 | runSystrayExit() |
| 332 | case t.wmSystrayMessage: |
| 333 | switch lParam { |
| 334 | case WM_LBUTTONUP: |
| 335 | systrayLeftClick() |
| 336 | case WM_RBUTTONUP: |
| 337 | systrayRightClick() |
| 338 | } |
| 339 | case t.wmTaskbarCreated: // on explorer.exe restarts |
| 340 | t.muNID.Lock() |
| 341 | t.nid.add() |
| 342 | t.muNID.Unlock() |
| 343 | default: |
| 344 | // Calls the default window procedure to provide default processing for any window messages that an application does not process. |
| 345 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ms633572(v=vs.85).aspx |
| 346 | lResult, _, _ = pDefWindowProc.Call( |
| 347 | uintptr(hWnd), |
| 348 | uintptr(message), |
| 349 | uintptr(wParam), |
| 350 | uintptr(lParam), |
| 351 | ) |
| 352 | } |
| 353 | return |
| 354 | } |
| 355 | |
| 356 | func (t *winTray) initInstance() error { |
| 357 | const IDI_APPLICATION = 32512 |
| 358 | const IDC_ARROW = 32512 // Standard arrow |
| 359 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ms633548(v=vs.85).aspx |
| 360 | const SW_HIDE = 0 |
| 361 | const CW_USEDEFAULT = 0x80000000 |
| 362 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ms632600(v=vs.85).aspx |
| 363 | const ( |
| 364 | WS_CAPTION = 0x00C00000 |
| 365 | WS_MAXIMIZEBOX = 0x00010000 |
| 366 | WS_MINIMIZEBOX = 0x00020000 |
| 367 | WS_OVERLAPPED = 0x00000000 |
| 368 | WS_SYSMENU = 0x00080000 |
| 369 | WS_THICKFRAME = 0x00040000 |
| 370 | |
| 371 | WS_OVERLAPPEDWINDOW = WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX |
| 372 | ) |
| 373 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ff729176 |
| 374 | const ( |
| 375 | CS_HREDRAW = 0x0002 |
| 376 | CS_VREDRAW = 0x0001 |
| 377 | ) |
| 378 | const ( |
| 379 | NIF_MESSAGE = 0x00000001 |
| 380 | NIF_GUID = 0x00000020 |
| 381 | ) |
| 382 | |
| 383 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ms644931(v=vs.85).aspx |
| 384 | const WM_USER = 0x0400 |
| 385 | |
| 386 | const ( |
| 387 | className = "SystrayClass" |
| 388 | windowName = "" |
| 389 | ) |
| 390 | |
| 391 | t.wmSystrayMessage = WM_USER + 1 |
| 392 | t.visibleItems = make(map[uint32][]uint32) |
| 393 | t.menus = make(map[uint32]windows.Handle) |
| 394 | t.menuOf = make(map[uint32]windows.Handle) |
| 395 | t.menuItemIcons = make(map[uint32]windows.Handle) |
| 396 | |
| 397 | taskbarEventNamePtr, _ := windows.UTF16PtrFromString("TaskbarCreated") |
| 398 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ms644947 |
| 399 | res, _, err := pRegisterWindowMessage.Call( |
| 400 | uintptr(unsafe.Pointer(taskbarEventNamePtr)), |
| 401 | ) |
| 402 | t.wmTaskbarCreated = uint32(res) |
| 403 | |
| 404 | t.loadedImages = make(map[string]windows.Handle) |
| 405 | |
| 406 | instanceHandle, _, err := pGetModuleHandle.Call(0) |
| 407 | if instanceHandle == 0 { |
| 408 | return err |
| 409 | } |
| 410 | t.instance = windows.Handle(instanceHandle) |
| 411 | |
| 412 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ms648072(v=vs.85).aspx |
| 413 | iconHandle, _, err := pLoadIcon.Call(0, uintptr(IDI_APPLICATION)) |
| 414 | if iconHandle == 0 { |
| 415 | return err |
| 416 | } |
| 417 | t.icon = windows.Handle(iconHandle) |
| 418 | |
| 419 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ms648391(v=vs.85).aspx |
| 420 | cursorHandle, _, err := pLoadCursor.Call(0, uintptr(IDC_ARROW)) |
| 421 | if cursorHandle == 0 { |
| 422 | return err |
| 423 | } |
| 424 | t.cursor = windows.Handle(cursorHandle) |
| 425 | |
| 426 | classNamePtr, err := windows.UTF16PtrFromString(className) |
| 427 | if err != nil { |
| 428 | return err |
| 429 | } |
| 430 | |
| 431 | windowNamePtr, err := windows.UTF16PtrFromString(windowName) |
| 432 | if err != nil { |
| 433 | return err |
| 434 | } |
| 435 | |
| 436 | t.wcex = &wndClassEx{ |
| 437 | Style: CS_HREDRAW | CS_VREDRAW, |
| 438 | WndProc: windows.NewCallback(t.wndProc), |
| 439 | Instance: t.instance, |
| 440 | Icon: t.icon, |
| 441 | Cursor: t.cursor, |
| 442 | Background: windows.Handle(6), // (COLOR_WINDOW + 1) |
| 443 | ClassName: classNamePtr, |
| 444 | IconSm: t.icon, |
| 445 | } |
| 446 | if err := t.wcex.register(); err != nil { |
| 447 | return err |
| 448 | } |
| 449 | |
| 450 | windowHandle, _, err := pCreateWindowEx.Call( |
| 451 | uintptr(0), |
| 452 | uintptr(unsafe.Pointer(classNamePtr)), |
| 453 | uintptr(unsafe.Pointer(windowNamePtr)), |
| 454 | uintptr(WS_OVERLAPPEDWINDOW), |
| 455 | uintptr(CW_USEDEFAULT), |
| 456 | uintptr(CW_USEDEFAULT), |
| 457 | uintptr(CW_USEDEFAULT), |
| 458 | uintptr(CW_USEDEFAULT), |
| 459 | uintptr(0), |
| 460 | uintptr(0), |
| 461 | uintptr(t.instance), |
| 462 | uintptr(0), |
| 463 | ) |
| 464 | if windowHandle == 0 { |
| 465 | return err |
| 466 | } |
| 467 | t.window = windows.Handle(windowHandle) |
| 468 | |
| 469 | pShowWindow.Call( |
| 470 | uintptr(t.window), |
| 471 | uintptr(SW_HIDE), |
| 472 | ) |
| 473 | |
| 474 | pUpdateWindow.Call( |
| 475 | uintptr(t.window), |
| 476 | ) |
| 477 | |
| 478 | t.muNID.Lock() |
| 479 | defer t.muNID.Unlock() |
| 480 | flags := uint32(NIF_MESSAGE) |
| 481 | if t.useIconGUID { |
| 482 | flags |= NIF_GUID |
| 483 | } |
| 484 | t.nid = ¬ifyIconData{ |
| 485 | Wnd: windows.Handle(t.window), |
| 486 | ID: 100, |
| 487 | Flags: flags, |
| 488 | CallbackMessage: t.wmSystrayMessage, |
| 489 | GuidItem: t.iconGUID, |
| 490 | } |
| 491 | t.nid.Size = uint32(unsafe.Sizeof(*t.nid)) |
| 492 | |
| 493 | return t.addInitialIcon() |
| 494 | } |
| 495 | |
| 496 | // addInitialIcon may fall back only before this process owns any GUID icon. |
| 497 | // Never delete the rejected GUID: another process may own it. |
| 498 | func (t *winTray) addInitialIcon() error { |
| 499 | err := t.nid.add() |
| 500 | if err == nil || !t.useIconGUID { |
| 501 | return err |
| 502 | } |
| 503 | t.useIconGUID = false |
| 504 | t.iconGUID = windows.GUID{} |
| 505 | t.nid.GuidItem = windows.GUID{} |
| 506 | t.nid.Flags &^= 0x20 // NIF_GUID |
| 507 | return t.nid.add() |
| 508 | } |
| 509 | |
| 510 | // SetIconID configures a stable Windows notification-area identity. It must be |
| 511 | // called before Run so every add, modify, delete, and Explorer restart uses the |
| 512 | // same GUID. |
| 513 | func SetIconID(id string) error { |
| 514 | guid, err := windows.GUIDFromString(id) |
| 515 | if err != nil { |
| 516 | return fmt.Errorf("invalid tray icon GUID: %w", err) |
| 517 | } |
| 518 | wt.muNID.Lock() |
| 519 | defer wt.muNID.Unlock() |
| 520 | if wt.initialized.Load() || wt.nid != nil { |
| 521 | return fmt.Errorf("tray icon GUID must be set before Run") |
| 522 | } |
| 523 | wt.iconGUID = guid |
| 524 | wt.useIconGUID = true |
| 525 | return nil |
| 526 | } |
| 527 | |
| 528 | func (t *winTray) createMenu() error { |
| 529 | const MIM_APPLYTOSUBMENUS = 0x80000000 // Settings apply to the menu and all of its submenus |
| 530 | |
| 531 | menuHandle, _, err := pCreatePopupMenu.Call() |
| 532 | if menuHandle == 0 { |
| 533 | return err |
| 534 | } |
| 535 | t.menus[0] = windows.Handle(menuHandle) |
| 536 | |
| 537 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ms647575(v=vs.85).aspx |
| 538 | mi := struct { |
| 539 | Size, Mask, Style, Max uint32 |
| 540 | Background windows.Handle |
| 541 | ContextHelpID uint32 |
| 542 | MenuData uintptr |
| 543 | }{ |
| 544 | Mask: MIM_APPLYTOSUBMENUS, |
| 545 | } |
| 546 | mi.Size = uint32(unsafe.Sizeof(mi)) |
| 547 | |
| 548 | res, _, err := pSetMenuInfo.Call( |
| 549 | uintptr(t.menus[0]), |
| 550 | uintptr(unsafe.Pointer(&mi)), |
| 551 | ) |
| 552 | if res == 0 { |
| 553 | return err |
| 554 | } |
| 555 | return nil |
| 556 | } |
| 557 | |
| 558 | func (t *winTray) convertToSubMenu(menuItemId uint32) (windows.Handle, error) { |
| 559 | const MIIM_SUBMENU = 0x00000004 |
| 560 | |
| 561 | res, _, err := pCreateMenu.Call() |
| 562 | if res == 0 { |
| 563 | return 0, err |
| 564 | } |
| 565 | menu := windows.Handle(res) |
| 566 | |
| 567 | mi := menuItemInfo{Mask: MIIM_SUBMENU, SubMenu: menu} |
| 568 | mi.Size = uint32(unsafe.Sizeof(mi)) |
| 569 | t.muMenuOf.RLock() |
| 570 | hMenu := t.menuOf[menuItemId] |
| 571 | t.muMenuOf.RUnlock() |
| 572 | res, _, err = pSetMenuItemInfo.Call( |
| 573 | uintptr(hMenu), |
| 574 | uintptr(menuItemId), |
| 575 | 0, |
| 576 | uintptr(unsafe.Pointer(&mi)), |
| 577 | ) |
| 578 | if res == 0 { |
| 579 | return 0, err |
| 580 | } |
| 581 | t.muMenus.Lock() |
| 582 | t.menus[menuItemId] = menu |
| 583 | t.muMenus.Unlock() |
| 584 | return menu, nil |
| 585 | } |
| 586 | |
| 587 | // SetRemovalAllowed sets whether a user can remove the systray icon or not. |
| 588 | // This is only supported on macOS. |
| 589 | func SetRemovalAllowed(allowed bool) { |
| 590 | } |
| 591 | |
| 592 | // winKeyNames maps the platform neutral key names used by SetShortcut to the names |
| 593 | // that are commonly presented in Windows menus. |
| 594 | var winKeyNames = map[string]string{ |
| 595 | "BackSpace": "Backspace", |
| 596 | "Delete": "Del", |
| 597 | "Enter": "Enter", |
| 598 | "Escape": "Esc", |
| 599 | "Insert": "Ins", |
| 600 | "PageDown": "PgDn", |
| 601 | "PageUp": "PgUp", |
| 602 | "Return": "Enter", |
| 603 | } |
| 604 | |
| 605 | // shortcutText returns the accelerator text presented after the item label, |
| 606 | // for example "Ctrl+Shift+S". It is empty if the item has no shortcut. |
| 607 | func (item *MenuItem) shortcutText() string { |
| 608 | if item.shortcutKey == "" { |
| 609 | return "" |
| 610 | } |
| 611 | |
| 612 | b := strings.Builder{} |
| 613 | if item.shortcutMods&KeyModifierControl != 0 { |
| 614 | b.WriteString("Ctrl+") |
| 615 | } |
| 616 | if item.shortcutMods&KeyModifierAlt != 0 { |
| 617 | b.WriteString("Alt+") |
| 618 | } |
| 619 | if item.shortcutMods&KeyModifierShift != 0 { |
| 620 | b.WriteString("Shift+") |
| 621 | } |
| 622 | if item.shortcutMods&KeyModifierSuper != 0 { |
| 623 | b.WriteString("Win+") |
| 624 | } |
| 625 | |
| 626 | if key, ok := winKeyNames[item.shortcutKey]; ok { |
| 627 | b.WriteString(key) |
| 628 | } else { |
| 629 | b.WriteString(strings.ToUpper(item.shortcutKey)) |
| 630 | } |
| 631 | return b.String() |
| 632 | } |
| 633 | |
| 634 | func (t *winTray) addOrUpdateMenuItem(menuItemId uint32, parentId uint32, title, shortcut string, disabled, checked bool) error { |
| 635 | if !wt.isReady() { |
| 636 | return ErrTrayNotReadyYet |
| 637 | } |
| 638 | |
| 639 | if shortcut != "" { |
| 640 | // Windows right aligns any text that follows a tab character in a menu item |
| 641 | title += "\t" + shortcut |
| 642 | } |
| 643 | |
| 644 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ms647578(v=vs.85).aspx |
| 645 | const ( |
| 646 | MIIM_FTYPE = 0x00000100 |
| 647 | MIIM_BITMAP = 0x00000080 |
| 648 | MIIM_STRING = 0x00000040 |
| 649 | MIIM_SUBMENU = 0x00000004 |
| 650 | MIIM_ID = 0x00000002 |
| 651 | MIIM_STATE = 0x00000001 |
| 652 | ) |
| 653 | const MFT_STRING = 0x00000000 |
| 654 | const ( |
| 655 | MFS_CHECKED = 0x00000008 |
| 656 | MFS_DISABLED = 0x00000003 |
| 657 | ) |
| 658 | titlePtr, err := windows.UTF16PtrFromString(title) |
| 659 | if err != nil { |
| 660 | return err |
| 661 | } |
| 662 | |
| 663 | mi := menuItemInfo{ |
| 664 | Mask: MIIM_FTYPE | MIIM_STRING | MIIM_ID | MIIM_STATE, |
| 665 | Type: MFT_STRING, |
| 666 | ID: uint32(menuItemId), |
| 667 | TypeData: titlePtr, |
| 668 | Cch: uint32(len(title)), |
| 669 | } |
| 670 | mi.Size = uint32(unsafe.Sizeof(mi)) |
| 671 | if disabled { |
| 672 | mi.State |= MFS_DISABLED |
| 673 | } |
| 674 | if checked { |
| 675 | mi.State |= MFS_CHECKED |
| 676 | } |
| 677 | t.muMenuItemIcons.RLock() |
| 678 | hIcon := t.menuItemIcons[menuItemId] |
| 679 | t.muMenuItemIcons.RUnlock() |
| 680 | if hIcon > 0 { |
| 681 | mi.Mask |= MIIM_BITMAP |
| 682 | mi.BMPItem = hIcon |
| 683 | } |
| 684 | |
| 685 | var res uintptr |
| 686 | t.muMenus.RLock() |
| 687 | menu, exists := t.menus[parentId] |
| 688 | t.muMenus.RUnlock() |
| 689 | if !exists { |
| 690 | menu, err = t.convertToSubMenu(parentId) |
| 691 | if err != nil { |
| 692 | return err |
| 693 | } |
| 694 | t.muMenus.Lock() |
| 695 | t.menus[parentId] = menu |
| 696 | t.muMenus.Unlock() |
| 697 | } else if t.getVisibleItemIndex(parentId, menuItemId) != -1 { |
| 698 | // We set the menu item info based on the menuID |
| 699 | res, _, err = pSetMenuItemInfo.Call( |
| 700 | uintptr(menu), |
| 701 | uintptr(menuItemId), |
| 702 | 0, |
| 703 | uintptr(unsafe.Pointer(&mi)), |
| 704 | ) |
| 705 | } |
| 706 | |
| 707 | if res == 0 { |
| 708 | // Menu item does not already exist, create it |
| 709 | t.muMenus.RLock() |
| 710 | submenu, exists := t.menus[menuItemId] |
| 711 | t.muMenus.RUnlock() |
| 712 | if exists { |
| 713 | mi.Mask |= MIIM_SUBMENU |
| 714 | mi.SubMenu = submenu |
| 715 | } |
| 716 | t.addToVisibleItems(parentId, menuItemId) |
| 717 | position := t.getVisibleItemIndex(parentId, menuItemId) |
| 718 | res, _, err = pInsertMenuItem.Call( |
| 719 | uintptr(menu), |
| 720 | uintptr(position), |
| 721 | 1, |
| 722 | uintptr(unsafe.Pointer(&mi)), |
| 723 | ) |
| 724 | if res == 0 { |
| 725 | t.delFromVisibleItems(parentId, menuItemId) |
| 726 | return err |
| 727 | } |
| 728 | t.muMenuOf.Lock() |
| 729 | t.menuOf[menuItemId] = menu |
| 730 | t.muMenuOf.Unlock() |
| 731 | } |
| 732 | |
| 733 | return nil |
| 734 | } |
| 735 | |
| 736 | func (t *winTray) addSeparatorMenuItem(menuItemId, parentId uint32) error { |
| 737 | if !wt.isReady() { |
| 738 | return ErrTrayNotReadyYet |
| 739 | } |
| 740 | |
| 741 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ms647578(v=vs.85).aspx |
| 742 | const ( |
| 743 | MIIM_FTYPE = 0x00000100 |
| 744 | MIIM_ID = 0x00000002 |
| 745 | MIIM_STATE = 0x00000001 |
| 746 | ) |
| 747 | const MFT_SEPARATOR = 0x00000800 |
| 748 | |
| 749 | mi := menuItemInfo{ |
| 750 | Mask: MIIM_FTYPE | MIIM_ID | MIIM_STATE, |
| 751 | Type: MFT_SEPARATOR, |
| 752 | ID: uint32(menuItemId), |
| 753 | } |
| 754 | |
| 755 | mi.Size = uint32(unsafe.Sizeof(mi)) |
| 756 | |
| 757 | t.addToVisibleItems(parentId, menuItemId) |
| 758 | position := t.getVisibleItemIndex(parentId, menuItemId) |
| 759 | t.muMenus.RLock() |
| 760 | menu := uintptr(t.menus[parentId]) |
| 761 | t.muMenus.RUnlock() |
| 762 | res, _, err := pInsertMenuItem.Call( |
| 763 | menu, |
| 764 | uintptr(position), |
| 765 | 1, |
| 766 | uintptr(unsafe.Pointer(&mi)), |
| 767 | ) |
| 768 | if res == 0 { |
| 769 | return err |
| 770 | } |
| 771 | |
| 772 | return nil |
| 773 | } |
| 774 | |
| 775 | func (t *winTray) removeMenuItem(menuItemId, parentId uint32) error { |
| 776 | if !wt.isReady() { |
| 777 | return ErrTrayNotReadyYet |
| 778 | } |
| 779 | |
| 780 | const MF_BYCOMMAND = 0x00000000 |
| 781 | const ERROR_SUCCESS syscall.Errno = 0 |
| 782 | |
| 783 | t.muMenus.RLock() |
| 784 | menu := uintptr(t.menus[parentId]) |
| 785 | t.muMenus.RUnlock() |
| 786 | res, _, err := pDeleteMenu.Call( |
| 787 | menu, |
| 788 | uintptr(menuItemId), |
| 789 | MF_BYCOMMAND, |
| 790 | ) |
| 791 | if res == 0 && err.(syscall.Errno) != ERROR_SUCCESS { |
| 792 | return err |
| 793 | } |
| 794 | t.delFromVisibleItems(parentId, menuItemId) |
| 795 | |
| 796 | return nil |
| 797 | } |
| 798 | |
| 799 | func (t *winTray) hideMenuItem(menuItemId, parentId uint32) error { |
| 800 | if !wt.isReady() { |
| 801 | return ErrTrayNotReadyYet |
| 802 | } |
| 803 | |
| 804 | const MF_BYCOMMAND = 0x00000000 |
| 805 | const ERROR_SUCCESS syscall.Errno = 0 |
| 806 | |
| 807 | t.muMenus.RLock() |
| 808 | menu := uintptr(t.menus[parentId]) |
| 809 | t.muMenus.RUnlock() |
| 810 | res, _, err := pRemoveMenu.Call( |
| 811 | menu, |
| 812 | uintptr(menuItemId), |
| 813 | MF_BYCOMMAND, |
| 814 | ) |
| 815 | if res == 0 && err.(syscall.Errno) != ERROR_SUCCESS { |
| 816 | return err |
| 817 | } |
| 818 | t.delFromVisibleItems(parentId, menuItemId) |
| 819 | |
| 820 | return nil |
| 821 | } |
| 822 | |
| 823 | func (t *winTray) showMenu() error { |
| 824 | if !wt.isReady() { |
| 825 | return ErrTrayNotReadyYet |
| 826 | } |
| 827 | |
| 828 | const ( |
| 829 | TPM_BOTTOMALIGN = 0x0020 |
| 830 | TPM_LEFTALIGN = 0x0000 |
| 831 | ) |
| 832 | p := point{} |
| 833 | res, _, err := pGetCursorPos.Call(uintptr(unsafe.Pointer(&p))) |
| 834 | if res == 0 { |
| 835 | return err |
| 836 | } |
| 837 | pSetForegroundWindow.Call(uintptr(t.window)) |
| 838 | |
| 839 | res, _, err = pTrackPopupMenu.Call( |
| 840 | uintptr(t.menus[0]), |
| 841 | TPM_BOTTOMALIGN|TPM_LEFTALIGN, |
| 842 | uintptr(p.X), |
| 843 | uintptr(p.Y), |
| 844 | 0, |
| 845 | uintptr(t.window), |
| 846 | 0, |
| 847 | ) |
| 848 | if res == 0 { |
| 849 | return err |
| 850 | } |
| 851 | |
| 852 | return nil |
| 853 | } |
| 854 | |
| 855 | func (t *winTray) delFromVisibleItems(parent, val uint32) { |
| 856 | t.muVisibleItems.Lock() |
| 857 | defer t.muVisibleItems.Unlock() |
| 858 | visibleItems := t.visibleItems[parent] |
| 859 | for i, itemval := range visibleItems { |
| 860 | if val == itemval { |
| 861 | t.visibleItems[parent] = append(visibleItems[:i], visibleItems[i+1:]...) |
| 862 | break |
| 863 | } |
| 864 | } |
| 865 | } |
| 866 | |
| 867 | func (t *winTray) addToVisibleItems(parent, val uint32) { |
| 868 | t.muVisibleItems.Lock() |
| 869 | defer t.muVisibleItems.Unlock() |
| 870 | if visibleItems, exists := t.visibleItems[parent]; !exists { |
| 871 | t.visibleItems[parent] = []uint32{val} |
| 872 | } else { |
| 873 | newvisible := append(visibleItems, val) |
| 874 | sort.Slice(newvisible, func(i, j int) bool { return newvisible[i] < newvisible[j] }) |
| 875 | t.visibleItems[parent] = newvisible |
| 876 | } |
| 877 | } |
| 878 | |
| 879 | func (t *winTray) getVisibleItemIndex(parent, val uint32) int { |
| 880 | t.muVisibleItems.RLock() |
| 881 | defer t.muVisibleItems.RUnlock() |
| 882 | for i, itemval := range t.visibleItems[parent] { |
| 883 | if val == itemval { |
| 884 | return i |
| 885 | } |
| 886 | } |
| 887 | return -1 |
| 888 | } |
| 889 | |
| 890 | // Loads an image from file to be shown in tray or menu item. |
| 891 | // LoadImage: https://msdn.microsoft.com/en-us/library/windows/desktop/ms648045(v=vs.85).aspx |
| 892 | func (t *winTray) loadIconFrom(src string) (windows.Handle, error) { |
| 893 | if !wt.isReady() { |
| 894 | return 0, ErrTrayNotReadyYet |
| 895 | } |
| 896 | |
| 897 | const IMAGE_ICON = 1 // Loads an icon |
| 898 | const LR_LOADFROMFILE = 0x00000010 // Loads the stand-alone image from the file |
| 899 | const LR_DEFAULTSIZE = 0x00000040 // Loads default-size icon for windows(SM_CXICON x SM_CYICON) if cx, cy are set to zero |
| 900 | |
| 901 | // Save and reuse handles of loaded images |
| 902 | t.muLoadedImages.RLock() |
| 903 | h, ok := t.loadedImages[src] |
| 904 | t.muLoadedImages.RUnlock() |
| 905 | if !ok { |
| 906 | srcPtr, err := windows.UTF16PtrFromString(src) |
| 907 | if err != nil { |
| 908 | return 0, err |
| 909 | } |
| 910 | res, _, err := pLoadImage.Call( |
| 911 | 0, |
| 912 | uintptr(unsafe.Pointer(srcPtr)), |
| 913 | IMAGE_ICON, |
| 914 | 0, |
| 915 | 0, |
| 916 | LR_LOADFROMFILE|LR_DEFAULTSIZE, |
| 917 | ) |
| 918 | if res == 0 { |
| 919 | return 0, err |
| 920 | } |
| 921 | h = windows.Handle(res) |
| 922 | t.muLoadedImages.Lock() |
| 923 | t.loadedImages[src] = h |
| 924 | t.muLoadedImages.Unlock() |
| 925 | } |
| 926 | return h, nil |
| 927 | } |
| 928 | |
| 929 | func iconToBitmap(hIcon windows.Handle) (windows.Handle, error) { |
| 930 | const SM_CXSMICON = 49 |
| 931 | const SM_CYSMICON = 50 |
| 932 | const DI_NORMAL = 0x3 |
| 933 | hDC, _, err := pGetDC.Call(uintptr(0)) |
| 934 | if hDC == 0 { |
| 935 | return 0, err |
| 936 | } |
| 937 | defer pReleaseDC.Call(uintptr(0), hDC) |
| 938 | hMemDC, _, err := pCreateCompatibleDC.Call(hDC) |
| 939 | if hMemDC == 0 { |
| 940 | return 0, err |
| 941 | } |
| 942 | defer pDeleteDC.Call(hMemDC) |
| 943 | cx, _, _ := pGetSystemMetrics.Call(SM_CXSMICON) |
| 944 | cy, _, _ := pGetSystemMetrics.Call(SM_CYSMICON) |
| 945 | hMemBmp, err := create32BitHBitmap(hMemDC, int32(cx), int32(cy)) |
| 946 | hOriginalBmp, _, _ := pSelectObject.Call(hMemDC, hMemBmp) |
| 947 | defer pSelectObject.Call(hMemDC, hOriginalBmp) |
| 948 | res, _, err := pDrawIconEx.Call(hMemDC, 0, 0, uintptr(hIcon), cx, cy, 0, uintptr(0), DI_NORMAL) |
| 949 | if res == 0 { |
| 950 | return 0, err |
| 951 | } |
| 952 | return windows.Handle(hMemBmp), nil |
| 953 | } |
| 954 | |
| 955 | // https://learn.microsoft.com/en-us/windows/win32/api/wingdi/nf-wingdi-createdibsection |
| 956 | func create32BitHBitmap(hDC uintptr, cx, cy int32) (uintptr, error) { |
| 957 | const BI_RGB uint32 = 0 |
| 958 | const DIB_RGB_COLORS = 0 |
| 959 | bmi := bitmapInfo{ |
| 960 | BmiHeader: bitmapInfoHeader{ |
| 961 | BiPlanes: 1, |
| 962 | BiCompression: BI_RGB, |
| 963 | BiWidth: cx, |
| 964 | BiHeight: cy, |
| 965 | BiBitCount: 32, |
| 966 | }, |
| 967 | } |
| 968 | bmi.BmiHeader.BiSize = uint32(unsafe.Sizeof(bmi.BmiHeader)) |
| 969 | var bits uintptr |
| 970 | hBitmap, _, err := pCreateDIBSection.Call( |
| 971 | hDC, |
| 972 | uintptr(unsafe.Pointer(&bmi)), |
| 973 | DIB_RGB_COLORS, |
| 974 | uintptr(unsafe.Pointer(&bits)), |
| 975 | uintptr(0), |
| 976 | 0, |
| 977 | ) |
| 978 | if hBitmap == 0 { |
| 979 | return 0, err |
| 980 | } |
| 981 | return hBitmap, nil |
| 982 | } |
| 983 | |
| 984 | func registerSystray() { |
| 985 | if err := wt.initInstance(); err != nil { |
| 986 | log.Printf("systray error: unable to init instance: %s\n", err) |
| 987 | return |
| 988 | } |
| 989 | |
| 990 | if err := wt.createMenu(); err != nil { |
| 991 | log.Printf("systray error: unable to create menu: %s\n", err) |
| 992 | return |
| 993 | } |
| 994 | |
| 995 | wt.initialized.Store(true) |
| 996 | systrayReady() |
| 997 | } |
| 998 | |
| 999 | var m = &struct { |
| 1000 | WindowHandle windows.Handle |
| 1001 | Message uint32 |
| 1002 | Wparam uintptr |
| 1003 | Lparam uintptr |
| 1004 | Time uint32 |
| 1005 | Pt point |
| 1006 | }{} |
| 1007 | |
| 1008 | func nativeLoop() { |
| 1009 | for doNativeTick() { |
| 1010 | } |
| 1011 | } |
| 1012 | |
| 1013 | func nativeEnd() { |
| 1014 | } |
| 1015 | |
| 1016 | func nativeStart() { |
| 1017 | go func() { |
| 1018 | for doNativeTick() { |
| 1019 | } |
| 1020 | }() |
| 1021 | } |
| 1022 | |
| 1023 | func doNativeTick() bool { |
| 1024 | ret, _, err := pGetMessage.Call(uintptr(unsafe.Pointer(m)), 0, 0, 0) |
| 1025 | |
| 1026 | // If the function retrieves a message other than WM_QUIT, the return value is nonzero. |
| 1027 | // If the function retrieves the WM_QUIT message, the return value is zero. |
| 1028 | // If there is an error, the return value is -1 |
| 1029 | // https://msdn.microsoft.com/en-us/library/windows/desktop/ms644936(v=vs.85).aspx |
| 1030 | switch int32(ret) { |
| 1031 | case -1: |
| 1032 | log.Printf("systray error: message loop failure: %s\n", err) |
| 1033 | return false |
| 1034 | case 0: |
| 1035 | return false |
| 1036 | default: |
| 1037 | pTranslateMessage.Call(uintptr(unsafe.Pointer(m))) |
| 1038 | pDispatchMessage.Call(uintptr(unsafe.Pointer(m))) |
| 1039 | } |
| 1040 | return true |
| 1041 | } |
| 1042 | |
| 1043 | func quit() { |
| 1044 | const WM_CLOSE = 0x0010 |
| 1045 | |
| 1046 | pPostMessage.Call( |
| 1047 | uintptr(wt.window), |
| 1048 | WM_CLOSE, |
| 1049 | 0, |
| 1050 | 0, |
| 1051 | ) |
| 1052 | |
| 1053 | wt.muNID.Lock() |
| 1054 | if wt.nid != nil { |
| 1055 | wt.nid.delete() |
| 1056 | } |
| 1057 | wt.muNID.Unlock() |
| 1058 | runSystrayExit() |
| 1059 | } |
| 1060 | |
| 1061 | func setInternalLoop(bool) { |
| 1062 | } |
| 1063 | |
| 1064 | func iconBytesToFilePath(iconBytes []byte) (string, error) { |
| 1065 | bh := md5.Sum(iconBytes) |
| 1066 | dataHash := hex.EncodeToString(bh[:]) |
| 1067 | iconFilePath := filepath.Join(os.TempDir(), "systray_temp_icon_"+dataHash) |
| 1068 | |
| 1069 | if _, err := os.Stat(iconFilePath); os.IsNotExist(err) { |
| 1070 | if err := ioutil.WriteFile(iconFilePath, iconBytes, 0644); err != nil { |
| 1071 | return "", err |
| 1072 | } |
| 1073 | } |
| 1074 | return iconFilePath, nil |
| 1075 | } |
| 1076 | |
| 1077 | // SetIcon sets the systray icon. |
| 1078 | // iconBytes should be the content of .ico for windows and .ico/.jpg/.png |
| 1079 | // for other platforms. |
| 1080 | func SetIcon(iconBytes []byte) { |
| 1081 | iconFilePath, err := iconBytesToFilePath(iconBytes) |
| 1082 | if err != nil { |
| 1083 | log.Printf("systray error: unable to write icon data to temp file: %s\n", err) |
| 1084 | return |
| 1085 | } |
| 1086 | if err := wt.setIcon(iconFilePath); err != nil { |
| 1087 | log.Printf("systray error: unable to set icon: %s\n", err) |
| 1088 | return |
| 1089 | } |
| 1090 | } |
| 1091 | |
| 1092 | // SetIconFromFilePath sets the systray icon from a file path. |
| 1093 | // iconFilePath should be the path to a .ico for windows and .ico/.jpg/.png for other platforms. |
| 1094 | func SetIconFromFilePath(iconFilePath string) error { |
| 1095 | err := wt.setIcon(iconFilePath) |
| 1096 | if err != nil { |
| 1097 | return fmt.Errorf("failed to set icon: %v", err) |
| 1098 | } |
| 1099 | return nil |
| 1100 | } |
| 1101 | |
| 1102 | // SetTemplateIcon sets the systray icon as a template icon (on macOS), falling back |
| 1103 | // to a regular icon on other platforms. |
| 1104 | // templateIconBytes and iconBytes should be the content of .ico for windows and |
| 1105 | // .ico/.jpg/.png for other platforms. |
| 1106 | func SetTemplateIcon(templateIconBytes []byte, regularIconBytes []byte) { |
| 1107 | SetIcon(regularIconBytes) |
| 1108 | } |
| 1109 | |
| 1110 | // SetTitle sets the systray title, only available on Mac and Linux. |
| 1111 | func SetTitle(title string) { |
| 1112 | // do nothing |
| 1113 | } |
| 1114 | |
| 1115 | func (item *MenuItem) parentId() uint32 { |
| 1116 | if item.parent != nil { |
| 1117 | return uint32(item.parent.id) |
| 1118 | } |
| 1119 | return 0 |
| 1120 | } |
| 1121 | |
| 1122 | // SetIcon sets the icon of a menu item. Only works on macOS and Windows. |
| 1123 | // iconBytes should be the content of .ico/.jpg/.png |
| 1124 | func (item *MenuItem) SetIcon(iconBytes []byte) { |
| 1125 | iconFilePath, err := iconBytesToFilePath(iconBytes) |
| 1126 | if err != nil { |
| 1127 | log.Printf("systray error: unable to write icon data to temp file: %s\n", err) |
| 1128 | return |
| 1129 | } |
| 1130 | |
| 1131 | err = item.SetIconFromFilePath(iconFilePath) |
| 1132 | if err != nil { |
| 1133 | log.Printf("systray error: %s\n", err) |
| 1134 | return |
| 1135 | } |
| 1136 | } |
| 1137 | |
| 1138 | // SetIconFromFilePath sets the icon of a menu item from a file path. |
| 1139 | // iconFilePath should be the path to a .ico for windows and .ico/.jpg/.png for other platforms. |
| 1140 | func (item *MenuItem) SetIconFromFilePath(iconFilePath string) error { |
| 1141 | h, err := wt.loadIconFrom(iconFilePath) |
| 1142 | if err != nil { |
| 1143 | return fmt.Errorf("unable to load icon from file: %s", err) |
| 1144 | } |
| 1145 | |
| 1146 | h, err = iconToBitmap(h) |
| 1147 | if err != nil { |
| 1148 | return fmt.Errorf("unable to convert icon to bitmap: %s", err) |
| 1149 | } |
| 1150 | wt.muMenuItemIcons.Lock() |
| 1151 | wt.menuItemIcons[uint32(item.id)] = h |
| 1152 | wt.muMenuItemIcons.Unlock() |
| 1153 | |
| 1154 | err = wt.addOrUpdateMenuItem(uint32(item.id), item.parentId(), item.title, item.shortcutText(), item.disabled, item.checked) |
| 1155 | if err != nil { |
| 1156 | return fmt.Errorf("unable to addOrUpdateMenuItem: %s", err) |
| 1157 | } |
| 1158 | return nil |
| 1159 | } |
| 1160 | |
| 1161 | // SetTooltip sets the systray tooltip to display on mouse hover of the tray icon, |
| 1162 | // only available on Mac and Windows. |
| 1163 | func SetTooltip(tooltip string) { |
| 1164 | if err := wt.setTooltip(tooltip); err != nil { |
| 1165 | log.Printf("systray error: unable to set tooltip: %s\n", err) |
| 1166 | return |
| 1167 | } |
| 1168 | } |
| 1169 | |
| 1170 | func addOrUpdateMenuItem(item *MenuItem) { |
| 1171 | err := wt.addOrUpdateMenuItem(uint32(item.id), item.parentId(), item.title, item.shortcutText(), item.disabled, item.checked) |
| 1172 | if err != nil { |
| 1173 | log.Printf("systray error: unable to addOrUpdateMenuItem: %s\n", err) |
| 1174 | return |
| 1175 | } |
| 1176 | } |
| 1177 | |
| 1178 | // SetTemplateIcon sets the icon of a menu item as a template icon (on macOS). On Windows, it |
| 1179 | // falls back to the regular icon bytes and on Linux it does nothing. |
| 1180 | // templateIconBytes and regularIconBytes should be the content of .ico for windows and |
| 1181 | // .ico/.jpg/.png for other platforms. |
| 1182 | func (item *MenuItem) SetTemplateIcon(templateIconBytes []byte, regularIconBytes []byte) { |
| 1183 | item.SetIcon(regularIconBytes) |
| 1184 | } |
| 1185 | |
| 1186 | func addSeparator(id uint32, parent uint32) { |
| 1187 | err := wt.addSeparatorMenuItem(id, parent) |
| 1188 | if err != nil { |
| 1189 | log.Printf("systray error: unable to addSeparator: %s\n", err) |
| 1190 | return |
| 1191 | } |
| 1192 | } |
| 1193 | |
| 1194 | func hideMenuItem(item *MenuItem) { |
| 1195 | err := wt.hideMenuItem(uint32(item.id), item.parentId()) |
| 1196 | if err != nil { |
| 1197 | log.Printf("systray error: unable to hideMenuItem: %s\n", err) |
| 1198 | return |
| 1199 | } |
| 1200 | } |
| 1201 | |
| 1202 | func removeMenuItem(item *MenuItem) { |
| 1203 | err := wt.removeMenuItem(uint32(item.id), item.parentId()) |
| 1204 | if err != nil { |
| 1205 | log.Printf("systray error: unable to removeMenuItem: %s\n", err) |
| 1206 | return |
| 1207 | } |
| 1208 | } |
| 1209 | |
| 1210 | func showMenuItem(item *MenuItem) { |
| 1211 | addOrUpdateMenuItem(item) |
| 1212 | } |
| 1213 | |
| 1214 | func resetMenu() { |
| 1215 | _, _, _ = pDestroyMenu.Call(uintptr(wt.menus[0])) |
| 1216 | wt.visibleItems = make(map[uint32][]uint32) |
| 1217 | wt.menus = make(map[uint32]windows.Handle) |
| 1218 | wt.menuOf = make(map[uint32]windows.Handle) |
| 1219 | wt.menuItemIcons = make(map[uint32]windows.Handle) |
| 1220 | wt.createMenu() |
| 1221 | } |
| 1222 | |
| 1223 | func systrayLeftClick() { |
| 1224 | if fn := tappedLeft; fn != nil { |
| 1225 | fn() |
| 1226 | return |
| 1227 | } |
| 1228 | |
| 1229 | wt.showMenu() |
| 1230 | } |
| 1231 | |
| 1232 | func systrayRightClick() { |
| 1233 | if fn := tappedRight; fn != nil { |
| 1234 | fn() |
| 1235 | return |
| 1236 | } |
| 1237 | |
| 1238 | wt.showMenu() |
| 1239 | } |
| 1240 |