Home » Community » Newbie corner » Changing the slider thumb
| Changing the slider thumb [message #39379] |
Thu, 14 March 2013 23:45  |
ManfredHerr
Messages: 67
Registered: February 2013
Location: Germany
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I want to have a slider below a rectangle. But the horizontal slider points down by default, not up (to my liking). I searched and found the hthumb in Ctrllib/Ctrl.iml. To my surprise the thumbs look different than in my application (and in theide/layout designer). Where can I find the used image?
Or how can I go back to the thumbs in Ctrl.iml?
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 Re: Changing the slider thumb [message #39443 is a reply to message #39379] |
Sat, 16 March 2013 15:25  |
ManfredHerr
Messages: 67
Registered: February 2013
Location: Germany
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Member |
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This effect is on Linux (Ubuntu 12.04) only. The sliders look different on Windows with MSVC 10 as base for Build.
Within theide I get different sliders when I change Setup->Environment->IDE.GUI_Theme to Classic or Standard.
For my application I didn`t find a selector for GUI theme. But if I check NO_GTK in the configuration flags then the sliders change as well.
The question remaining is: Where does the GUI theme "Host Platform" get the slider thumbs from?
Answer: As GTK theming is applied (the only use of GTK I think) the thumb is retrieved from a gtk_theming_engine residing somewhere in a shared library.
NB.: As theming is based on GTK-2 --what I deduce from the names of the engines handled in the code -- but most applications on my machine use GTK-3 I stopped searching any further. The consequence is NO_GTK (better name NO_GTK_THEMES) or not using standard sliders but those within Controls4u.
[Updated on: Wed, 20 March 2013 15:27] Report message to a moderator |
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| Re: Changing the slider thumb [message #39478 is a reply to message #39379] |
Wed, 20 March 2013 16:23 |
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jibe
Messages: 294
Registered: February 2007
Location: France
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Experienced Member |
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Hi,
Did you have a look to SliderCtrlX in bazaar (Controls4U) ? This control can have various thumbs, and it's quite easy to add more if you want !
As far as I remember, I think that I had the same question about the origin of the image of the thumb. But as anyway I wanted to have my owns, I did not look for the answer.
SliderCtrlX is a widget that allows entering an integer value by dragging a thumb. Compared to SliderCtrl, it has several enhanced capabilities :
- Has an adjustable scale with adjustable major and minor ticks,
- The value can be set continuously or step by step with adjustable value of steps,
- Can be used as indicator, with not draggable thumb,
- Colored value bar, with adjustable color and width,
- Several thumb shapes and possibility to have a customized thumb,
- The scale can be inverted,
- Possibility to position directly the thumb by a mouse click,
- Multiple units for scale, like hours/mn/s alowing it to be used as video progress counter.
Use it or not, I'd be happy to have your opinion.
[Updated on: Wed, 20 March 2013 16:28] Report message to a moderator |
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