> > hello, > > > > I have a set of image thumbnails that I want to scroll along horizontally > > as well as expand when the window is resized. When I use a Fl_Scroll I can > > scroll them nicely but they do not resize when the scroll resizes. If I > > place the images in a Fl_Pack they do resize, but then of course I lose the > > scroll functionality. > > So how can I combine these 2 functionalies? > > > > Do I need to manually detect a window resize and respond? > > If so how should I detect this event? I didn't see an event for it so > > currently I check the window size during draw() to see if it has changed, > > which feels awkward. > > > > thanks, Richard > > You can inherit Fl_Scroll and override resize(X,Y,W,H) method. Each time > window (and thus your scroll group widget) resizes, resize() will be > called with new values. > > I would advise calling Fl_Scroll's resize too (in overriden method) so > scrollbars > can be nicely updated. > > -- > Sanel
overriding resize() is working well - thanks for the advice. For the resize I use: pack->resize( x(), y(), pack->w(), h() - 17 ); I found that 17 is the offset required to leave room for the scroll bar. Is this value defined somewhere? Ian: > You do have to watch out though - depending on how the window manager > handles resizing (e.g. if it shows the content changing while resizing) > you might do an awful lot of work scaling the images during the drag - > sometimes it is betetr to wait until the drag has stopped and just do > all the rescaling once at the final size... for now it is responsive enough with a few thumbnails, but I will keep this in mind. Duncan: > Does this example from Greg's Cheat Sheet meet your needs? > http://seriss.com/people/erco/fltk/#ScrollableWidgetBrowser ah I forgot about this excellent resource Richard _______________________________________________ fltk mailing list [email protected] http://lists.easysw.com/mailman/listinfo/fltk
