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Fl::delete_widget() now hides a widget/window if it is shown (visible_r()).

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This is useful (necessary) because in old (pre 1.1.6) which  didn't have
Fl::delete_widget() users would have called 'delete window', which would
have hidden a window and destroyed it as well. Now the widget/window is
hidden immediately, whereas it is destroyed delayed, which comes much
closer to the previous behavior and is useful for better window close
detection in Mac OS X cmd-Q handling.


git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@10456 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
This commit is contained in:
Albrecht Schlosser 2014-11-15 15:23:56 +00:00
parent cc9b73d97a
commit 80bd905981
2 changed files with 21 additions and 10 deletions
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16
CHANGES
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@ -2,15 +2,17 @@ CHANGES IN FLTK 1.3.4 RELEASED: ??? ?? ????
New features and extensions
- added full support of true subwindows to the Mac OS X FLTK platform. Window
nesting to any depth is possible. An Fl_Gl_Window window or subwindow
can contain Fl_Window's as subwindows.
- added full support of true subwindows to the Mac OS X FLTK platform.
Window nesting to any depth is possible. An Fl_Gl_Window window or
subwindow can contain Fl_Window's as subwindows.
Other improvements
Other improvements
- fl_read_image() now captures all pixels within the rectangle described
by its arguments, whether they belong to a GL scene or not (STR #3142). It also
captures subwindows of GL windows.
- fl_read_image() now captures all pixels within the rectangle
described by its arguments, whether they belong to a GL scene
or not (STR #3142). It also captures subwindows of GL windows.
- Fl::delete_widget() now hides the widget or window immediately
(i.e. when called) - only destruction is delayed as before.
CHANGES IN FLTK 1.3.3 RELEASED: Nov 03 2014

15
src/Fl.cxx
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@ -1865,7 +1865,13 @@ static Fl_Widget **dwidgets = 0;
When deleting groups or windows, you must only delete the group or
window widget and not the individual child widgets.
\since FLTK 1.3 it is not necessary to remove widgets from their parent
\since FLTK 1.3.4 the widget will be hidden immediately, but the actual
destruction will be delayed until the event loop is finished. Up to
FLTK 1.3.3 windows wouldn't be hidden before the event loop was done,
hence you had to hide() a window in your window close callback if
you called Fl::delete_widget() to destroy (and hide) the window.
\since FLTK 1.3.0 it is not necessary to remove widgets from their parent
groups or windows before calling this, because it will be done in the
widget's destructor, but it is not a failure to do this nevertheless.
@ -1876,8 +1882,11 @@ static Fl_Widget **dwidgets = 0;
*/
void Fl::delete_widget(Fl_Widget *wi) {
if (!wi) return;
// don;t add the same widget twice
// if the widget is shown(), hide() it (FLTK 1.3.4)
if (wi->visible_r()) wi->hide();
// don't add the same widget twice to the widget delete list
for (int i = 0; i < num_dwidgets; i++) {
if (dwidgets[i]==wi) return;
}