I want to highlight(fill) the dots of UIPageControl when I scroll not to move dot to the next one.
Is there any way to do that.
Expected VS Reality
Thanks,
Related
In LO/OO Writer vertical scrolling can be done e.g. by moving the text cursor up/down, using the mouse wheel, clicking the up/down arrows on the vertical scrolling bar, etc.
Touch scrolling (on touch screens) is not supported, unfortunately. Therefore I wrote a tool (in Autohotkey) which enables touch scrolling. It is working fine, but the scrolling is not as smooth as in other programs supporting touch scrolling: the content of the window is moved in steps of approx. one line.
In my tool I am using the best 'control' for scrolling I could find: touch point movements are remapped to clicks on the up/down arrows on the vertical scrolling bar.
MY QUESTION: Is there (could there be) another 'control' in LO/OO Writer which would allow smoother (pixelwise) scrolling of the displayed content?
Thank you very much in advance for your answers! (Please only answers referring to LO/OO Writer.)
Clicking and dragging the scrollbar allows higher granularity than the up/down arrows. The scroll amount adjusts if the document is zoomed in.
On the downside, using the scrollbar is much more difficult than a simple click on the arrows. There is a discussion at https://autohotkey.com/board/topic/51041-click-drag-scrollbars/.
If it is a touch screen, perhaps you could require the user to touch the scrollbar, so the touch location would give the vertical position of the scrollbar. Then use MouseClickDrag starting from that position.
I'm trying to build a custom, reusable UIScrollView that can be added to multiple views. The scroll view is going to be a weight picker. For the life of me, I can't find a decent example for how to implement this neatly or cleanly.
I would love for someone to point me to an existing library or tutorial that shows me how to do this. I've hacked apart a few examples, but so far, nothing is very good or reusable. Please help!!
For what it's worth, I have an image that individual ticks for the weight. So I can select to the tenth of the number (e.g. 160.4). The image has the first tick bold and larger than the remaining 9. I'd like to have the weight/number centered over the large tick. I'll update the points to my label/datasource after scrolling stops.
UPDATE
I need to make this. I have the custom font, background, and ticker image.
I would not do this through an UIScrollView. I think it would be more complex and you would certainly end up having issues when trying to add you custom picker into another scroll view.
What I would do is:
building the picker view by means of a series of CALayers, each one representing a "building block" of your picker view; see attached image:
each building block would represent a specific value by mixing a UILabel (the text) and an image;
use a pan gesture recognizer, or alternatively define touchesBegin/Moved/Ended method to deal with panning;
when a pan is done, you displace the view content to the left or right according to the panning;
when panning, you also add new building blocks to the left or right end of the picker to account for empty areas that would be revealed by the displacement done at point 4.
I think that having a look at another kind of custom control source code would be of great help to you. You would not possibly find your custom picker already implemented, but could get some guidance. Have a look then at cocoa controls.
Hope this helps.
If I were going to implement this, I would create a really wide image that had every weight on it I'd ever need - I would probably create this in code when the app started up. This image is then used as the contentView of your picker. You get all the scrolling features "for free", and you could even update the values shown in the other parts of the view during scrolling (or dragging.
The scrollView is just the area with the tick marks and weight numbers, and resides in a subview above the background, but below the centered vertical line that shows the actual weight.
EDIT: on second thought, forget the image. If you have the code to draw the image, you can do the drawing in a custom UIView. So you get the draw rect, you know the contentOffset, so you can draw just what you need.
I've been searching and searching on how apple makes the dragging motion on the lock screen to open the camera so clean. I'm trying to do a similar thing with an app where you drag from the bottom up to reveal a menu, but i cant quite get it right. Anyone know how to, or of any tutorials that show how to do this? Thanks in advance!
To follow up what's been mentioned by Hejazi I believe you can achieve this in 3 steps:
create a background rectangle with some corner radius (this is a property of CGRect).
create a top view, corresponding to the part you want to be able to slide. Attach a pan gesture to this view so you will be able to handle the animation for this view.
for the text part being highlighted I think you need another two views: I will apply a mask corresponding to the text to a view so you get some transparency only for the letters of your text and animate a white round view behind it.
As you can probably tell from my last few questions, I am working on a screen that allows users to edit labels. Pages and all the other lovely apps have glorious resizing handles to show what label is currently being edited.
I am trying to get some feedback on the best way to do this. Is it possible to add an 'dot' image to the centre of all the edges of the label? Is it possible to change the background colour only in sections of a label?
Or should I add an image on top of the label and disable it? The most important feature is for only the uilabel to respond to touches. If I overlay an image, I want it to ignore the touch and hand it off to the label.
Any feedback appreciated!
Cheers Guys!
You will find as many opinions on this as there are programmers. There is not built-in decoration for a view that shows the dot in the middle of each side. But you can add that easily enough. One way is instantiate four instances of an image with the dot and add them as subviews of the view you are decorating. you can then set the center of each dot on the center of each edge in the parent view. As long as clipping is turned off in the parent view, these will show up (if they are not hidden) even if they extend outside the frame of the parent view.
I don't understand what you want to accomplish by changing the background color in sections of the label view, but I this probably has some moderate complexity to it.
You can also to this with core graphics. I'll stop there, though. There are literally many ways to do what you are trying to do.
I have an image that is 320x480 and upon orientation change this image obviously hangs out of view. There are some images where the focal point of it sits with it's bottom cut off (which isn't undesirable). My issue however is when the user pans vertically to see the full image, the view appears to snap to the bottom meaning the top of the focal point is cutoff. What I wish to happen is that the users can "free-scroll" through the image and perhaps move the images so the focal point is centre screen, instead of cutting off the top and bottom. I understand this is a difficult concept to describe in words so I've attached some images below.
This is how it starts:
This is where it snaps to the bottom:
This is the kind of view I wish to have but cannot:
Is there a way to control this "snapping" or perhaps a method I could use to override it when dealing specifically with this kind of orientation? My issue is that i WANT it to snap when panning left/right onto the other images in the ScrollView, just not up/down.
EDIT:
pagingEnabled is the property that controls this snapping, but is there anyway to detect if the movement is Up/Down or Left/Right and disable or enable this property in each occasion?
Cheers for any help you can offer
You can try using two nested scroll views; one is limited to scrolling horizontally with paging enabled, and one (or one for each page if you're displaying several images?) limited to scrolling vertically with paging disabled. By default this will work like you said, paging/snapping horizontally but free scroll vertically. However, it will only let you scroll in one direction at a time (either horizontally or vertically, not diagonally).
If you want to use nested scroll views like this but you'd like to allow scrolling/dragging in both directions simultaneously, take a look at my solution for this: Nested UIScrollViews scrolling simultaneously