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function TopWindow::Maximize does not work in linux. [message #6105]

Mon, 30 October 2006 20:41

nicomesas
Messages: 104
Registered: September 2006
Location: Barcelona, Spain

Experienced Member

One first approach to solve this failure could be this.

void TopWindow::Maximize(bool effect)
{
  state = MAXIMIZED;
  // new lines added
  Rect r = Ctrl::GetWorkArea() ;
  SetFrameRect(r) ;
}

The problem to use this is that the window occupies all the screen available but its state is not maximized.

In order to be able to put the window in maximized way it is necessary to use a code like this

static void net_wm_state(const Ctrl* w, bool set, Atom one, Atom two = 0)
{

  XEvent e;
  e.xclient.type = ClientMessage;
  e.xclient.message_type = XAtom("_NET_WM_STATE");
  e.xclient.display = Xdisplay;
  e.xclient.window = w->GetWindow();
  e.xclient.format = 32;
  e.xclient.data.l[0] = set ? 1 : 0;
  e.xclient.data.l[1] = one;
  e.xclient.data.l[2] = two;
  e.xclient.data.l[3] = 0;
  e.xclient.data.l[4] = 0;
  XSendEvent(Xdisplay, Xroot, false, (SubstructureNotifyMask | SubstructureRedirectMask), &e);
}
void TopWindow::Maximize(bool effect)
{
  state = MAXIMIZED;
  net_wm_state(this, effect,
     XAtom("_NET_WM_STATE_MAXIMIZED_HORZ"),
     XAtom("_NET_WM_STATE_MAXIMIZED_VERT") ) ;
}

The bad thing of this code is that it requires that the X11 window exists... Good this is what I deduce nevertheless, because if I call this code in the constructor of my TopWindow does not do anything, but if I call it when the window already is, if that works well.

I had thought that in X11 something like the Windows WM_CREATE message would. I belivied there was a ok place to do the maximize operation, but believe that my little knowledge of X11 do not give for more. Confused

[Updated on: Mon, 30 October 2006 21:45] by Moderator

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Re: function TopWindow::Maximize does not work in linux. [message #6107 is a reply to message #6105]

Mon, 30 October 2006 22:18

guido
Messages: 169
Registered: April 2006

Experienced Member

Hi Nico!

In TopWindow::SyncCaption() please add:

if (state == MAXIMIZED) {
			wina[n++] = XAtom("_NET_WM_STATE_MAXIMIZED_HORZ");
			wina[n++] = XAtom("_NET_WM_STATE_MAXIMIZED_VERT");
		}

above or below this line:

if(topmost)
	wina[n++] = XAtom("_NET_WM_STATE_ABOVE");

and report if that works.

That would be my guess.

Guido

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Re: function TopWindow::Maximize does not work in linux. [message #6112 is a reply to message #6107]

Tue, 31 October 2006 09:26

nicomesas
Messages: 104
Registered: September 2006
Location: Barcelona, Spain

Experienced Member

It works perfectly!

Could be added this functionality in the next one release?

Now I do not understand why the Maximize function has a not-used parameter �?

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Re: function TopWindow::Maximize does not work in linux. [message #6115 is a reply to message #6112]

Tue, 31 October 2006 11:39

mirek
Messages: 14258
Registered: November 2005

Ultimate Member

Added.

Thanks Guido, without you U++/X11 would not exist...

Mirek

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