+ // normally we want to hide the window immediately so that it doesn't get
+ // stuck on the screen while it's being destroyed, however we shouldn't
+ // hide the last visible window as then we might not get any idle events
+ // any more as no events will be sent to the hidden window and without idle
+ // events we won't prune wxPendingDelete list and the application won't
+ // terminate
+ for ( wxWindowList::const_iterator i = wxTopLevelWindows.begin(),
+ end = wxTopLevelWindows.end();
+ i != end;
+ ++i )
+ {
+ wxTopLevelWindow * const win = static_cast<wxTopLevelWindow *>(*i);
+ if ( win != this && win->IsShown() )
+ {
+ // there remains at least one other visible TLW, we can hide this
+ // one
+ Hide();
+
+ break;
+ }
+ }
+
+ return true;
+}
+
+bool wxTopLevelWindowBase::IsLastBeforeExit() const
+{
+ // first of all, automatically exiting the app on last window close can be
+ // completely disabled at wxTheApp level
+ if ( !wxTheApp || !wxTheApp->GetExitOnFrameDelete() )
+ return false;
+
+ wxWindowList::const_iterator i;
+ const wxWindowList::const_iterator end = wxTopLevelWindows.end();
+
+ // then decide whether we should exit at all
+ for ( i = wxTopLevelWindows.begin(); i != end; ++i )
+ {
+ wxTopLevelWindow * const win = static_cast<wxTopLevelWindow *>(*i);
+ if ( win->ShouldPreventAppExit() )
+ {
+ // there remains at least one important TLW, don't exit
+ return false;
+ }
+ }
+
+ // if yes, close all the other windows: this could still fail
+ for ( i = wxTopLevelWindows.begin(); i != end; ++i )
+ {
+ // don't close twice the windows which are already marked for deletion
+ wxTopLevelWindow * const win = static_cast<wxTopLevelWindow *>(*i);
+ if ( !wxPendingDelete.Member(win) && !win->Close() )
+ {
+ // one of the windows refused to close, don't exit
+ //
+ // NB: of course, by now some other windows could have been already
+ // closed but there is really nothing we can do about it as we
+ // have no way just to ask the window if it can close without
+ // forcing it to do it
+ return false;
+ }
+ }
+
+ return true;
+}
+
+// ----------------------------------------------------------------------------
+// wxTopLevelWindow geometry
+// ----------------------------------------------------------------------------
+
+void wxTopLevelWindowBase::SetMinSize(const wxSize& minSize)
+{
+ SetSizeHints(minSize, GetMaxSize());
+}
+
+void wxTopLevelWindowBase::SetMaxSize(const wxSize& maxSize)
+{
+ SetSizeHints(GetMinSize(), maxSize);
+}
+
+void wxTopLevelWindowBase::GetRectForTopLevelChildren(int *x, int *y, int *w, int *h)
+{
+ GetPosition(x,y);
+ GetSize(w,h);
+}
+
+/* static */
+wxSize wxTopLevelWindowBase::GetDefaultSize()
+{
+ wxSize size = wxGetClientDisplayRect().GetSize();
+
+ // create proportionally bigger windows on small screens
+ if ( size.x >= 1024 )
+ size.x = 400;
+ else if ( size.x >= 800 )
+ size.x = 300;
+ else if ( size.x >= 320 )
+ size.x = 240;
+
+ if ( size.y >= 768 )
+ size.y = 250;
+ else if ( size.y > 200 )
+ {
+ size.y *= 2;
+ size.y /= 3;
+ }
+
+ return size;
+}
+
+void wxTopLevelWindowBase::DoCentre(int dir)
+{
+ // on some platforms centering top level windows is impossible
+ // because they are always maximized by guidelines or limitations
+ if(IsAlwaysMaximized())
+ return;
+
+ // we need the display rect anyhow so store it first: notice that we should
+ // be centered on the same display as our parent window, the display of
+ // this window itself is not really defined yet
+ int nDisplay = wxDisplay::GetFromWindow(GetParent() ? GetParent() : this);
+ wxDisplay dpy(nDisplay == wxNOT_FOUND ? 0 : nDisplay);
+ const wxRect rectDisplay(dpy.GetClientArea());
+
+ // what should we centre this window on?
+ wxRect rectParent;
+ if ( !(dir & wxCENTRE_ON_SCREEN) && GetParent() )
+ {
+ // centre on parent window: notice that we need screen coordinates for
+ // positioning this TLW
+ rectParent = GetParent()->GetScreenRect();
+
+ // if the parent is entirely off screen (happens at least with MDI
+ // parent frame under Mac but could happen elsewhere too if the frame
+ // was hidden/moved away for some reason), don't use it as otherwise
+ // this window wouldn't be visible at all
+ if ( !rectDisplay.Contains(rectParent.GetTopLeft()) &&
+ !rectParent.Contains(rectParent.GetBottomRight()) )
+ {
+ // this is enough to make IsEmpty() test below pass
+ rectParent.width = 0;
+ }
+ }
+
+ if ( rectParent.IsEmpty() )
+ {
+ // we were explicitly asked to centre this window on the entire screen
+ // or if we have no parent anyhow and so can't centre on it
+ rectParent = rectDisplay;
+ }
+
+ // centering maximized window on screen is no-op
+ if((rectParent == rectDisplay) && IsMaximized())
+ return;
+
+ if ( !(dir & wxBOTH) )
+ dir |= wxBOTH; // if neither is specified, center in both directions
+
+ // the new window rect candidate
+ wxRect rect = GetRect().CentreIn(rectParent, dir & ~wxCENTRE_ON_SCREEN);
+
+ // we don't want to place the window off screen if Centre() is called as
+ // this is (almost?) never wanted and it would be very difficult to prevent
+ // it from happening from the user code if we didn't check for it here
+ if ( !rectDisplay.Contains(rect.GetTopLeft()) )
+ {
+ // move the window just enough to make the corner visible
+ int dx = rectDisplay.GetLeft() - rect.GetLeft();
+ int dy = rectDisplay.GetTop() - rect.GetTop();
+ rect.Offset(dx > 0 ? dx : 0, dy > 0 ? dy : 0);
+ }
+
+ if ( !rectDisplay.Contains(rect.GetBottomRight()) )
+ {
+ // do the same for this corner too
+ int dx = rectDisplay.GetRight() - rect.GetRight();
+ int dy = rectDisplay.GetBottom() - rect.GetBottom();
+ rect.Offset(dx < 0 ? dx : 0, dy < 0 ? dy : 0);
+ }
+
+ // the window top left and bottom right corner are both visible now and
+ // although the window might still be not entirely on screen (with 2
+ // staggered displays for example) we wouldn't be able to improve the
+ // layout much in such case, so we stop here
+
+ // -1 could be valid coordinate here if there are several displays
+ SetSize(rect, wxSIZE_ALLOW_MINUS_ONE);
projects / wxWidgets.git / blobdiff