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wails/v3/pkg/application/systemtray_windows.go
2023-07-12 20:31:13 +10:00

338 lines
7.4 KiB
Go

//go:build windows
package application
import (
"fmt"
"github.com/wailsapp/wails/v3/pkg/icons"
"syscall"
"unsafe"
"github.com/samber/lo"
"github.com/wailsapp/wails/v3/pkg/events"
"github.com/wailsapp/wails/v3/pkg/w32"
)
const (
WM_USER_SYSTRAY = w32.WM_USER + 1
)
type windowsSystemTray struct {
parent *SystemTray
menu *Win32Menu
// Platform specific implementation
uid uint32
hwnd w32.HWND
lightModeIcon w32.HICON
darkModeIcon w32.HICON
currentIcon w32.HICON
}
func (s *windowsSystemTray) positionWindow(window *WebviewWindow, offset int) error {
// Get the trayBounds of this system tray
trayBounds, err := s.bounds()
if err != nil {
return err
}
// Get the current screen trayBounds
currentScreen, err := s.getScreen()
if err != nil {
return err
}
screenBounds := currentScreen.WorkArea
newX := screenBounds.Width - window.Width()
newY := screenBounds.Height - window.Height()
taskbarBounds := w32.GetTaskbarPosition()
switch taskbarBounds.UEdge {
case w32.ABE_LEFT:
if trayBounds != nil && trayBounds.Y-(window.Height()/2) >= 0 {
newY = trayBounds.Y - (window.Height() / 2)
}
window.SetRelativePosition(offset, newY)
case w32.ABE_TOP:
if trayBounds != nil && trayBounds.X-(window.Width()/2) <= newX {
newX = trayBounds.X - (window.Width() / 2)
}
window.SetRelativePosition(newX, offset)
case w32.ABE_RIGHT:
if trayBounds != nil && trayBounds.Y-(window.Height()/2) <= newY {
newY = trayBounds.Y - (window.Height() / 2)
}
window.SetRelativePosition(screenBounds.Width-window.Width()-offset, newY)
case w32.ABE_BOTTOM:
if trayBounds != nil && trayBounds.X-(window.Width()/2) <= newX {
newX = trayBounds.X - (window.Width() / 2)
}
window.SetRelativePosition(newX, screenBounds.Height-window.Height()-offset)
}
return nil
}
func (s *windowsSystemTray) bounds() (*Rect, error) {
bounds, err := w32.GetSystrayBounds(s.hwnd, s.uid)
if err != nil {
return nil, err
}
monitor := w32.MonitorFromWindow(s.hwnd, w32.MONITOR_DEFAULTTONEAREST)
if monitor == 0 {
return nil, fmt.Errorf("failed to get monitor")
}
// Get the taskbar rect
taskbarRect := w32.GetTaskbarPosition()
flyoutOpen := !w32.RectInRect(bounds, &taskbarRect.Rc)
if flyoutOpen {
return nil, nil
}
return &Rect{
X: int(bounds.Left),
Y: int(bounds.Top),
Width: int(bounds.Right - bounds.Left),
Height: int(bounds.Bottom - bounds.Top),
}, nil
}
func (s *windowsSystemTray) getScreen() (*Screen, error) {
// Get the screen for this systray
return getScreen(s.hwnd)
}
func (s *windowsSystemTray) setMenu(menu *Menu) {
s.updateMenu(menu)
}
func (s *windowsSystemTray) run() {
s.hwnd = w32.CreateWindowEx(
0,
windowClassName,
nil,
0,
0,
0,
0,
0,
w32.HWND_MESSAGE,
0,
0,
nil)
if s.hwnd == 0 {
panic(syscall.GetLastError())
}
nid := w32.NOTIFYICONDATA{
HWnd: s.hwnd,
UID: uint32(s.parent.id),
UFlags: w32.NIF_ICON | w32.NIF_MESSAGE,
HIcon: s.currentIcon,
UCallbackMessage: WM_USER_SYSTRAY,
}
nid.CbSize = uint32(unsafe.Sizeof(nid))
if !w32.ShellNotifyIcon(w32.NIM_ADD, &nid) {
panic(syscall.GetLastError())
}
nid.UVersion = w32.NOTIFYICON_VERSION
if !w32.ShellNotifyIcon(w32.NIM_SETVERSION, &nid) {
panic(syscall.GetLastError())
}
if s.parent.icon != nil {
s.lightModeIcon = lo.Must(w32.CreateSmallHIconFromImage(s.parent.icon))
} else {
s.lightModeIcon = lo.Must(w32.CreateSmallHIconFromImage(icons.SystrayLight))
}
if s.parent.darkModeIcon != nil {
s.darkModeIcon = lo.Must(w32.CreateSmallHIconFromImage(s.parent.darkModeIcon))
} else {
s.darkModeIcon = lo.Must(w32.CreateSmallHIconFromImage(icons.SystrayDark))
}
s.uid = nid.UID
if s.parent.menu != nil {
s.updateMenu(s.parent.menu)
}
// Set Default Callbacks
if s.parent.clickHandler == nil {
s.parent.clickHandler = func() {
println("Left Button Clicked")
}
}
if s.parent.rightClickHandler == nil {
s.parent.rightClickHandler = func() {
if s.menu != nil {
s.menu.ShowAtCursor()
}
}
}
// Update the icon
s.updateIcon()
// Listen for dark mode changes
globalApplication.On(events.Windows.SystemThemeChanged, func(event *Event) {
s.updateIcon()
})
// Register the system tray
getNativeApplication().registerSystemTray(s)
}
func (s *windowsSystemTray) updateIcon() {
var newIcon w32.HICON
if w32.IsCurrentlyDarkMode() {
newIcon = s.darkModeIcon
} else {
newIcon = s.lightModeIcon
}
if s.currentIcon == newIcon {
return
}
s.currentIcon = newIcon
nid := s.newNotifyIconData()
nid.UFlags = w32.NIF_ICON
if s.currentIcon != 0 {
nid.HIcon = s.currentIcon
}
if !w32.ShellNotifyIcon(w32.NIM_MODIFY, &nid) {
panic(syscall.GetLastError())
}
return
}
func (s *windowsSystemTray) newNotifyIconData() w32.NOTIFYICONDATA {
nid := w32.NOTIFYICONDATA{
UID: s.uid,
HWnd: s.hwnd,
}
nid.CbSize = uint32(unsafe.Sizeof(nid))
return nid
}
func (s *windowsSystemTray) setIcon(icon []byte) {
var err error
s.lightModeIcon, err = w32.CreateSmallHIconFromImage(icon)
if err != nil {
panic(syscall.GetLastError())
}
if s.darkModeIcon == 0 {
s.darkModeIcon = s.lightModeIcon
}
// Update the icon
s.updateIcon()
}
func (s *windowsSystemTray) setDarkModeIcon(icon []byte) {
var err error
s.darkModeIcon, err = w32.CreateSmallHIconFromImage(icon)
if err != nil {
panic(syscall.GetLastError())
}
if s.lightModeIcon == 0 {
s.lightModeIcon = s.darkModeIcon
}
// Update the icon
s.updateIcon()
}
func newSystemTrayImpl(parent *SystemTray) systemTrayImpl {
return &windowsSystemTray{
parent: parent,
}
}
func (s *windowsSystemTray) wndProc(msg uint32, wParam, lParam uintptr) uintptr {
switch msg {
case WM_USER_SYSTRAY:
msg := lParam & 0xffff
switch msg {
case w32.WM_LBUTTONUP:
if s.parent.clickHandler != nil {
s.parent.clickHandler()
}
case w32.WM_RBUTTONUP:
if s.parent.rightClickHandler != nil {
s.parent.rightClickHandler()
}
case w32.WM_LBUTTONDBLCLK:
if s.parent.doubleClickHandler != nil {
s.parent.doubleClickHandler()
}
case w32.WM_RBUTTONDBLCLK:
if s.parent.rightDoubleClickHandler != nil {
s.parent.rightDoubleClickHandler()
}
case 0x0406:
if s.parent.mouseEnterHandler != nil {
s.parent.mouseEnterHandler()
}
case 0x0407:
if s.parent.mouseLeaveHandler != nil {
s.parent.mouseLeaveHandler()
}
}
//println(w32.WMMessageToString(msg))
// Menu processing
case w32.WM_COMMAND:
cmdMsgID := int(wParam & 0xffff)
switch cmdMsgID {
default:
s.menu.ProcessCommand(cmdMsgID)
}
default:
//msg := int(wParam & 0xffff)
//println(w32.WMMessageToString(uintptr(msg)))
}
return w32.DefWindowProc(s.hwnd, msg, wParam, lParam)
}
func (s *windowsSystemTray) updateMenu(menu *Menu) {
s.menu = NewPopupMenu(s.hwnd, menu)
s.menu.onMenuOpen = s.parent.onMenuOpen
s.menu.onMenuClose = s.parent.onMenuClose
s.menu.Update()
}
// ---- Unsupported ----
func (s *windowsSystemTray) setLabel(_ string) {
// Unsupported - do nothing
}
func (s *windowsSystemTray) setTemplateIcon(_ []byte) {
// Unsupported - do nothing
}
func (s *windowsSystemTray) setIconPosition(position int) {
// Unsupported - do nothing
}
func (s *windowsSystemTray) destroy() {
// Remove and delete the system tray
getNativeApplication().unregisterSystemTray(s)
s.menu.Destroy()
w32.DestroyWindow(s.hwnd)
// Destroy the notification icon
nid := s.newNotifyIconData()
if !w32.ShellNotifyIcon(w32.NIM_DELETE, &nid) {
globalApplication.info(syscall.GetLastError().Error())
}
}