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sys_tray.py
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sys_tray.py
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# http://www.brunningonline.net/simon/blog/archives/SysTrayIcon.py.html
import os
import win32api
import win32con
import win32gui_struct
try:
import winxpgui as win32gui
except ImportError:
import win32gui
import logging
logger = logging.getLogger(__name__)
class SystemTrayApp(object):
QUIT = 'QUIT'
SPECIAL_ACTIONS = [QUIT]
FIRST_ID = 1023
def __init__(self,
icon: str,
hover_text: str,
menu_options: list,
window_class_name: str,
on_quit = None,
default_menu_index: int = None):
self.icon = icon
self.hover_text = hover_text
self.on_quit = on_quit
menu_options.append(('Quit', self.QUIT),)
self._next_action_id = self.FIRST_ID
self.menu_actions_by_id = set()
self.menu_options = self._add_ids_to_menu_options(menu_options)
self.menu_actions_by_id = dict(self.menu_actions_by_id)
del self._next_action_id
self.default_menu_index = (default_menu_index or 0)
self.window_class_name = window_class_name
message_map = {win32gui.RegisterWindowMessage('TaskbarCreated'): self.restart,
win32con.WM_DESTROY: self.destroy,
win32con.WM_COMMAND: self.command,
win32con.WM_USER+20 : self.notify,}
# Register the Window class.
window_class = win32gui.WNDCLASS()
hinst = window_class.hInstance = win32gui.GetModuleHandle(None)
window_class.lpszClassName = self.window_class_name
window_class.style = win32con.CS_VREDRAW | win32con.CS_HREDRAW;
window_class.hCursor = win32gui.LoadCursor(0, win32con.IDC_ARROW)
window_class.hbrBackground = win32con.COLOR_WINDOW
window_class.lpfnWndProc = message_map # could also specify a wndproc.
classAtom = win32gui.RegisterClass(window_class)
# Create the Window.
style = win32con.WS_OVERLAPPED | win32con.WS_SYSMENU
self.hwnd = win32gui.CreateWindow(classAtom,
self.window_class_name,
style,
0,
0,
win32con.CW_USEDEFAULT,
win32con.CW_USEDEFAULT,
0,
0,
hinst,
None)
win32gui.UpdateWindow(self.hwnd)
self.notify_id = None
self.refresh_icon()
def loop(self) -> None:
win32gui.PumpMessages()
def _add_ids_to_menu_options(self, menu_options: list) -> list:
result = []
for menu_option in menu_options:
option_text, option_action = menu_option
# option_text, option_icon, option_action = menu_option
if callable(option_action) or option_action in self.SPECIAL_ACTIONS:
self.menu_actions_by_id.add((self._next_action_id, option_action))
result.append(menu_option + (self._next_action_id,))
elif non_string_iterable(option_action):
result.append((option_text,
# option_icon,
self._add_ids_to_menu_options(option_action),
self._next_action_id))
else:
logging.warning(f'Unknown item {option_text} - {str(option_action)}')
# logging.warning(str('Unknown item', option_text, option_icon, option_action))
self._next_action_id += 1
return result
def refresh_icon(self):
# Try and find a custom icon
hinst = win32gui.GetModuleHandle(None)
if os.path.isfile(self.icon):
icon_flags = win32con.LR_LOADFROMFILE | win32con.LR_DEFAULTSIZE
self.hicon = win32gui.LoadImage(hinst,
self.icon,
win32con.IMAGE_ICON,
0,
0,
icon_flags)
else:
logging.warning('Can\'t find icon file - using default.')
self.hicon = win32gui.LoadIcon(0, win32con.IDI_APPLICATION)
if self.notify_id: message = win32gui.NIM_MODIFY
else: message = win32gui.NIM_ADD
self.notify_id = (self.hwnd,
0,
win32gui.NIF_ICON | win32gui.NIF_MESSAGE | win32gui.NIF_TIP,
win32con.WM_USER+20,
self.hicon,
self.hover_text)
win32gui.Shell_NotifyIcon(message, self.notify_id)
def restart(self, hwnd, msg: str, wparam: int, lparam: int) -> int:
self.refresh_icon()
return wparam
def destroy(self, hwnd, msg: str, wparam: int, lparam: int) -> int:
if self.on_quit: self.on_quit(self)
nid = (self.hwnd, 0)
win32gui.Shell_NotifyIcon(win32gui.NIM_DELETE, nid)
win32gui.PostQuitMessage(0) # Terminate the app.
return wparam
def notify(self, hwnd, msg: str, wparam: int, lparam: int) -> bool:
if lparam==win32con.WM_LBUTTONDBLCLK:
self.execute_menu_option(self.default_menu_index + self.FIRST_ID)
elif lparam==win32con.WM_RBUTTONUP:
self.show_menu()
elif lparam==win32con.WM_LBUTTONUP:
pass
return True
def show_menu(self) -> None:
menu = win32gui.CreatePopupMenu()
self.create_menu(menu, self.menu_options)
# win32gui.SetMenuDefaultItem(menu, 1000, 0)
pos = win32gui.GetCursorPos()
# See http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/menus_0hdi.asp
win32gui.SetForegroundWindow(self.hwnd)
win32gui.TrackPopupMenu(menu,
win32con.TPM_LEFTALIGN,
pos[0],
pos[1],
0,
self.hwnd,
None)
win32gui.PostMessage(self.hwnd, win32con.WM_NULL, 0, 0)
def create_menu(self, menu, menu_options: list) -> None:
for option_text, option_action, option_id in menu_options[::-1]:
# for option_text, option_icon, option_action, option_id in menu_options[::-1]:
# if option_icon:
# option_icon = self.prep_menu_icon(option_icon)
if option_id in self.menu_actions_by_id:
item, extras = win32gui_struct.PackMENUITEMINFO(text=option_text,
# hbmpItem=option_icon,
wID=option_id)
win32gui.InsertMenuItem(menu, 0, 1, item)
else:
submenu = win32gui.CreatePopupMenu()
self.create_menu(submenu, option_action)
item, extras = win32gui_struct.PackMENUITEMINFO(text=option_text,
# hbmpItem=option_icon,
hSubMenu=submenu)
win32gui.InsertMenuItem(menu, 0, 1, item)
def prep_menu_icon(self, icon: str): # Returns _win32typing.PyGdiHANDLE
# First load the icon.
ico_x = win32api.GetSystemMetrics(win32con.SM_CXSMICON)
ico_y = win32api.GetSystemMetrics(win32con.SM_CYSMICON)
self.hicon = win32gui.LoadImage(0, icon, win32con.IMAGE_ICON, ico_x, ico_y, win32con.LR_LOADFROMFILE)
hdcBitmap = win32gui.CreateCompatibleDC(0)
hdcScreen = win32gui.GetDC(0)
hbm = win32gui.CreateCompatibleBitmap(hdcScreen, ico_x, ico_y)
hbmOld = win32gui.SelectObject(hdcBitmap, hbm)
# Fill the background.
brush = win32gui.GetSysColorBrush(win32con.COLOR_MENU)
win32gui.FillRect(hdcBitmap, (0, 0, 16, 16), brush)
# unclear if brush needs to be feed. Best clue I can find is:
# "GetSysColorBrush returns a cached brush instead of allocating a new
# one." - implies no DeleteObject
# draw the icon
win32gui.DrawIconEx(hdcBitmap, 0, 0, self.hicon, ico_x, ico_y, 0, 0, win32con.DI_NORMAL)
win32gui.SelectObject(hdcBitmap, hbmOld)
win32gui.DeleteDC(hdcBitmap)
return hbm
def command(self, hwnd, msg: str, wparam: int, lparam: int) -> int:
id = win32gui.LOWORD(wparam)
self.execute_menu_option(id)
return wparam
def execute_menu_option(self, id: int) -> None:
menu_action = self.menu_actions_by_id[id]
if menu_action == self.QUIT:
win32gui.DestroyWindow(self.hwnd)
else:
menu_action(self)
def win_notify(self, title: str, desc: str) -> None:
win32gui.Shell_NotifyIcon(win32gui.NIM_MODIFY, \
(self.hwnd, 0, win32gui.NIF_INFO, win32con.WM_USER+20,\
self.hicon, 'Windows balloontip',desc,200,title))
def non_string_iterable(obj: any) -> bool:
try:
iter(obj)
except TypeError:
return False
else:
return not isinstance(obj, str)