Fullscreen mode

[bdh...@gmail.com]

Hello all,

Is there a way to make a CEFPython app run full-screen (without titlebar or anything) in Windows? I did some poking around and saw some discussion about adding it to CEF, but didn't see anything conclusive about wether or not it is actually there. I did see the enable_fullscreen flag for BrowserSettings, but couldn't determine what, if any, effect it had.
-Benjamin

[Czarek Tomczak]

Hello Benjamin,

First you need to create a fullscreen window, see this question on stackoverflow:

http://stackoverflow.com/questions/2382464/win32-full-screen-and-hiding-taskbar/5299718#5299718

The easiest way is to just call SetWindowPos() after creating window, use the pywin32 extension to call win32 api functions.

Next pass that window handle to cefpython.CreateBrowser(), set the fullscreen_enabled to true in BrowserSettings.

Czarek.

[bdh...@gmail.com]

Thanks for the response.

I was about to report that I had achieved my desired result using PyGTK, using the example in your package, adding

self.mainWindow.fullscreen()

and that worked pretty well, too.

Thanks for your contributions; I'll be keeping an eye on your CEF3 port as well.

[ric...@gmail.com]

Can you explain further how to get Full screen.
My situation is a bit different. I'll be running 3 apps, each on a different screen, and each needs to be full screen. By default, full screen goes to the 'Main' monitor, while I need to move the app prior to making it full screen so it occupies the correct screen.

[ric...@gmail.com]

I figured it out, and am posting how for others.
Post these 2 lines where you want. I got them assigned to a hotkey.
win32gui.SetWindowLong(windowID, win32con.GWL_STYLE, win32con.WS_POPUP)
win32gui.ShowWindow(windowID, win32con.SW_MAXIMIZE)

[ric...@gmail.com]

If you want to return back to normal after going full-screen, you'll need these 2 lines:
win32gui.SetWindowLong(windowID, win32con.GWL_STYLE, win32con.WS_TILEDWINDOW)
win32gui.ShowWindow(windowID, win32con.SW_SHOWNORMAL)

Note that position and size is not restored, so you'll have to record that info and restore it.
You can use cefwindow.MoveWindow() or a win32 line like this:
win32gui.SetWindowPos(windowID, win32con.HWND_TOPMOST, 0, 0, 800, 600, 0)

[Czarek Tomczak]

I've added an example of going fullscreen to cefadvanced.py, this code emulates chromium's behavior, though I'm not sure about the "for_metro" variable, it probably should tell whether this is metro snap mode in Windows 8, it is hardcoded to False as of the moment.

# Bind F11 to go fullscreen.

if keyCode == cefpython.VK_F11 and cefpython.IsKeyModifier(cefpython.KEY_NONE, modifiers):

if platform.system() == "Windows":

for_metro = False

hwnd = browser.GetWindowID()

# Logic copied from chromium > fullscreen_handler.cc > FullscreenHandler::SetFullscreenImpl:

# http://src.chromium.org/viewvc/chrome/trunk/src/ui/views/win/fullscreen_handler.cc

if not browser.GetUserData("is_fullscreen"):

browser.SetUserData("SavedWindowInfo_maximized", ctypes.windll.user32.IsZoomed(hwnd))

if browser.GetUserData("SavedWindowInfo_maximized"):

win32api.SendMessage(hwnd, win32con.WM_SYSCOMMAND, win32con.SC_RESTORE, 0)

browser.SetUserData("SavedWindowInfo_gwl_style", win32api.GetWindowLong(hwnd, win32con.GWL_STYLE))

browser.SetUserData("SavedWindowInfo_gwl_exstyle", win32api.GetWindowLong(hwnd, win32con.GWL_EXSTYLE))

browser.SetUserData("SavedWindowInfo_window_rect", win32gui.GetWindowRect(hwnd)) 

if not browser.GetUserData("is_fullscreen"):

gwl_style = browser.GetUserData("SavedWindowInfo_gwl_style")

gwl_exstyle = browser.GetUserData("SavedWindowInfo_gwl_exstyle")

remove_style = win32con.WS_CAPTION | win32con.WS_THICKFRAME

remove_exstyle = win32con.WS_EX_DLGMODALFRAME | win32con.WS_EX_WINDOWEDGE

remove_exstyle += win32con.WS_EX_CLIENTEDGE | win32con.WS_EX_STATICEDGE

win32api.SetWindowLong(hwnd, win32con.GWL_STYLE, gwl_style & ~(remove_style))

win32api.SetWindowLong(hwnd, win32con.GWL_EXSTYLE, gwl_exstyle & ~(remove_exstyle))

if not for_metro:

# MONITOR_DEFAULTTONULL, MONITOR_DEFAULTTOPRIMARY, MONITOR_DEFAULTTONEAREST

monitor = win32api.MonitorFromWindow(hwnd, win32con.MONITOR_DEFAULTTONEAREST)

monitorInfo = win32api.GetMonitorInfo(monitor) # keys: Device, Work, Monitor

(left, top, right, bottom) = monitorInfo["Monitor"]

win32gui.SetWindowPos(hwnd, None, left, top, right-left, bottom-top,

win32con.SWP_NOZORDER | win32con.SWP_NOACTIVATE | win32con.SWP_FRAMECHANGED)

else:

gwl_style = browser.GetUserData("SavedWindowInfo_gwl_style")

gwl_exstyle = browser.GetUserData("SavedWindowInfo_gwl_exstyle")

win32api.SetWindowLong(hwnd, win32con.GWL_STYLE, gwl_style)

win32api.SetWindowLong(hwnd, win32con.GWL_EXSTYLE, gwl_exstyle)

if not for_metro:

(left, top, right, bottom) = browser.GetUserData("SavedWindowInfo_window_rect")

win32gui.SetWindowPos(hwnd, None, left, top, right-left, bottom-top,

win32con.SWP_NOZORDER | win32con.SWP_NOACTIVATE | win32con.SWP_FRAMECHANGED)

if browser.GetUserData("SavedWindowInfo_maximized"):

win32api.SendMessage(hwnd, win32con.WM_SYSCOMMAND, win32con.SC_MAXIMIZE, 0)

browser.SetUserData("is_fullscreen", not bool(browser.GetUserData("is_fullscreen")))

return True

Czarek.

[Czarek Tomczak]

Switching to fullscreen will be built-in in next 0.42 release, there will be new methods in Browser object: IsFullscreen(), ToggleFullscreen().

[or...@icx-il.com]

Hi,
Is there a similar way we can achieve full-screen in Linux too?

[Czarek Tomczak]

It depends on the GUI framework you use. If using wxPython call window.ShowFullScreen() on a top-level window. If using PyGTK call window.fullscreen().

[or...@icx-il.com]

What about without any framework, like in the cefpython tutorial? (https://github.com/cztomczak/cefpython/blob/master/examples/tutorial.py)
We only want to show web content, no other GUI components involved.

[Czarek Tomczak]

Please ask your questions in a separate topic.