I have some questions about sliders,
Im using a slider and i want a marker to be present on it like:
http://1.bp.blogspot.com/-HDNFnyRU2Cw/TcuMbBaL70I/AAAAAAAAAGc/7eWN1qnZbAw/s1600/seek.JPG
it draws the image at the bottom of the slider, not on top of it, searched for a setThumbImagePosition or something like that ,but didnt find it, is there a way to use sliders with markers on the top of them?(like the image shown)
Is there a way to show divisions on the slider?(for example this)
https://raw.githubusercontent.com/channguyen/range-slider-view/master/screenshots/sc.png
Whats the best practice to create thicker sliders?
Check out this post notice that in order to create the stars effect properly we wrap the slider in a flow layout to prevent it from growing. You can use background images just like we do in the stars slider but you need to place the slider in a flow layout of similar layout that doesn't let it grow beyond its preferred size.
Related
I really want to create circular slider. I've been searching, but I can't find any information. So any tutorial, guide or if someone already created like this. Please post their XML code.
Instead of making a circular slider (which as #auburg points out) would be a little unintutive to use (think the old telephone dials), consider making it a dial like a thermostat:
It's functionally very similar, but has a much larger hit-test area and is therefore less easy to mess-up for the user.
Try this guide: https://blogs.msdn.microsoft.com/jerrynixon/2012/12/06/walkthrough-building-a-sweet-dial-in-xaml-for-windows-8/
A circular slider can be implemented just like a normal horizontal or vertical slider. The only difference would be that in the MouseMove event handler of the thumb during the drag operation you cannot just handle the horizontal or vertical position. Instead you have to calculate the angle relative to the center of the slider and map that to the value of the slider.
I've been searching for awhile, but haven't been able to find anything. I'd like to be able to add kind of a glimmer or sparkly animation on an image element in wpf.
Essentially the effect here I'm after here is the same that you get with trading cards that are "foil's".
I'd like to have an image, and then be able to add this animation to it at will. I'm thinking maybe some kind of user control, or template possibly. Hopefully generic enough that I can just toss an image at it and it will just overlay the image and run.
Any ideas?
A simple construction that easily can be turned into a control is by nesting the image in a Grid and adding a second Grid (on top) as a sibling.
De second grid can be given a linear gradient brush that is primarily transparent but does contain a white glimmer.
This brush can be animated; you could move it and change the opacity of the grid/brush.
This way you do not change the image.
I need to display many markers on a WPF image. The markers can be lines, circles, squares, etc. and there can be several hundreds of them.
Both the image source and the markers data are updated every few seconds. The markers are associated with specific pixels on the image and their size should be absolute in relation to the screen (i.e. when I move the image the markers should move along with it, but if i zoom in, they should take the same space of the screen as before).
Currently, I've implemented this using the AdornerLayer. This solution has several problems but the most significant one is that the UI doesn't fare well under the load even for 120 such markers.
I wanted to ask what would be the best way to go about implementing this? I thought of two solutions:
Inherit from Canvas and make sure it is invalidated not for every
added marker but for a range of markers at once
Create a control that holds an image and change its OnDraw to draw all the markers
I would appreciate some pointers from someone with experience with a similar problem.
Your use case looks quite specialized, so a specialized solution seems in order. I'd try a variant of your second option — extend Image, overriding its OnRender method.
My aim is to have 3 images shrink, grow, and move along a horizontal axis depending on selection. Using Auto Layout seems to make the images jump about as they try to fulfil the Top space to superview / Bottom space to superview constraints.
So to combat this I have put all the images inside their own UIView. The UIView is set to the maximum size the images can grow to, it is centred on the horizontal axis. So now all the images must do is stay centred inside their corresponding UIView. This has fixed my problem as the UIViews perform the horizontal translation, while the images shrink/grow inside while remaining centred. My question is - is this the correct way to do this? It seems very long and like I am perhaps misusing the ability of Auto Layout. I have to perform similar tasks with more images and so any advice is welcome! Thanks.
I've just written a little essay on this topic here:
How do I adjust the anchor point of a CALayer, when Auto Layout is being used?
Basically autolayout does not play at all well with any kind of view transform. The easiest solution is to take your view out of autolayout's control altogether, but alternatively you can give it only constraints that won't fight back against the particular kind of transform you intend to apply. That second solution sounds like just the sort of thing you're doing.
How would you guys go about creating a slider where the thumb stays centered, but the image or background of the slider slides with a slide gesture.
The only real example I could find is here, in the second screenshot:
http://www.windowsphone.com/en-US/apps/5ffe35e4-8e43-e011-854c-00237de2db9e
Basically the slider "thumb" would stay in place, but the numbers on the scale move with a finger swipe.
Just looking for some direction here on how you would approach this. What control would you recommend I start with? Or would it be easier to create a custom control?
I haven't tried it but a slider might be too hard because of the way it is constructed; the area/scale that you want to slide consists of two repeat buttons and those do not easily slide. So it might be best to NOT use the slider because the code of the Slider class expects these template parts to be present.
I'd try with plain, templated control. The thumb is pure decoration. I'd add the 'scale' in a scrollview without scrollbars.