Re: [fltk.development] [RFE] STR #2951: DoubleSlider for selecting low and high values within min/max range
On 14 Apr 2013, at 13:57, Duncan Gibson wrote: I have an application with a colour bar type legend which does not give the required resolution, so I needed to be able to adjust the low and high values in an intuitive but minimally invasive way on screen. I hacked together the following demonstrator, drawing some inspiration from Fl_Slider. The features I required were: - a vertical slider - possibility of setting min and max values of continuous range (no step) - possibility to move low and high sliders (min = low high = max) I then hacked it further to fit directly with the rest of my application. Questions: 1. Does anybody know of a similar widget out there? 2. Is it worth factoring out a separate DoubleValuator base class? 3. Apart from vertical/horizontal what other features are needed? 4. Does it require min/low/high/max fields? 5. Would a floating tooltip with feedback be enough? (eg Greg's TipWin) I'd be willing to have a go a this, but can't provide any timeframes. Coming to this party late, but I just remembered that Jason Bryan's FLU widgets have a double-slider widget. His pages at OSC.edu appear to be gone but the mirror here still seems to be working: http://src.gnu-darwin.org/ports/x11-toolkits/flu/work/FLU_2.14/ His FLU_Dual_Slider might be relevant, to see how what he did compares. He derived a pile of new fltk based widgets, so there may be clues in that work for a template for future derivations? ___ fltk-dev mailing list fltk-dev@easysw.com http://lists.easysw.com/mailman/listinfo/fltk-dev
Re: [fltk.development] [RFE] STR #2951: DoubleSlider for selectinglow and high values within min/max range
Coming to this party late, but I just remembered that Jason Bryan's FLU widgets have a double-slider widget. His pages at OSC.edu appear to be gone but the mirror here still seems to be working: http://src.gnu-darwin.org/ports/x11-toolkits/flu/work/FLU_2.14/=20 His FLU_Dual_Slider might be relevant, to see how what he did compares. He derived a pile of new fltk based widgets, so there may be clues in that work for a template for future derivations? I was going to say that the above link didn't work for me either until I remembered to remove the =20 at the end. This will work: http://src.gnu-darwin.org/ports/x11-toolkits/flu/work/FLU_2.14/ It also reminded me that I had trawled through all of the Links pages a while ago, and weeded out the dead links to come up with: Article #884: What third party widgets are available for FLTK? http://fltk.org/articles.php?L884 So why I hadn't remembered and checked there first I don't know :-( If you go to the Flu_Dual_Slider doxygen page from the link above, the list of public methods is quite limited, so the interface looks to be quite simple. He does allow overlap where low == high. He has derived it from Fl_Valuator, which is interesting, because that only supports a single value so I would be curious how he has implemented it. However, although he appears to be using the FLTK licence, I don't think we should just base our code on hiswithout understanding our own vision / requirements. Cheers D. PS. I shall update the article to include the link above [Done] ___ fltk-dev mailing list fltk-dev@easysw.com http://lists.easysw.com/mailman/listinfo/fltk-dev
