use-capture | 🎥 Record react-three-fiber scenes with ccapture.js | Frontend Framework library
kandi X-RAY | use-capture Summary
kandi X-RAY | use-capture Summary
Record react-three-fiber scenes with ccapture.js
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QUESTION
I now read many threads and tried and so on. I don't get it.
Question When using MouseCapture any other control isn't motioned. Cannot click something. No Highlightings happens on mouse over. MouseCaption is blocking that. Clicking Twice is necessary. How to avoid that?
Basically I created a custom autocompletebox which consists of a textbox for free input and a dropdown as textblock containing suggested result-element by the given input. This is pretty like a standard ComboBox.
From Combobox we know, when it is expanded and one clicks somewhere else the dropdown is collapsed.
I want exactly the same behavior like the combobox uses.
Because I am not the first one asking that, I tried several things but didn't get them fully working.
What I still tried and I failed with.
- Adding
OnLostFocus
event to the textbox does not recognize any mouse clicks to non-focusable Elements. - Using
Mous.Caption(this)
withPreviewMouseLeftButtonDown
to receive any mouse clicks on any place on the window.- Yeah that works! I can collapse my dropdown, Un-Capture the mouse again.
- But: The mouse caption prevents me from clicking to other UIElement. Checkboxes and RadioBoxes wont be toggled. Just hovering the mouse over a Checkbox or anything else is not highlighting that element any more. Instead I now need to click twice to check a textbox.
- I can't figure out, how to solve that.
- Also what did not work was that when the mouse-capture event was fired, I cannot figure out where the click has been made.
source
as well ase.OriginalSource
are equal to my custom control- Getting the Mouse-Position may be an option. But did not find to get the position of my control related to the mouse-position. any properties on the control return NaN.
- At first I was not able to recognize any difference between
PreviewMouseLeftButtonDown
andMouseLeftButtonDown
.- I thought the first one, when directly releasing mouse-capture, would fire the mouseclick event to its original destination without the mouse capture any more. It doesn't.
- I got it by using the Hittest. Is it that way to do so?
Some Code
XAML of AutoCompleteBox
...ANSWER
Answered 2020-Mar-15 at 11:13I did not give up and made some steps forward.
Answers to:
1) Either make the Window Focusable or even don't do it that way.
2)
Using the right CaptureMode by Mouse.Capture(this, CaptureMode.SubTree);
at least solves that the DropDown keeps being interactive with mouse-over etc. (ofcourse, because it's a child of the capturing-control).
The rest of the Window keeps beeing blocked by mouse-capture. One may just realizes, that this is also normal behavior for a standard ComboBox. So one could live with that.
3)
Getting the inbound-click-check via the mouse position can be handled with the following code. Notice that the mouse-position is given relative to the given element. In this case the AutoCompleteBox is given itself via this
. So the upper left corner will be {0.0, 0.0}
.
QUESTION
d3.js gives inheritance to the child element if they are selected with select
from the parent selection with its data bound. How can I do the same way with multiple children -- ie use selectAll
on parent, and have the data propagated to that child selection? I tried to use datum(function(d) {return d;})
on the children selection, however that seems to only work once, and when trying to update it returns old data for some reason.
I can solve this by using select
in a loop for each child, however I'd be happy to find a more elegant approach.
In this fiddle on the left is not working but desired solution, on the right -- working but uglier solution. Press the button to see the different behavior
...ANSWER
Answered 2019-May-10 at 14:01Unfortunately what you want is not possible, unless one changes d3-selection
source code.
As you know, selectAll
, unlike select
, does not propagates the data. For the other readers to understand this issue as well, here is table I made that summarises the differences between select
and selectAll
:
QUESTION
I am using Windows.Media.Capture.MediaCapture
to get a video stream from a Surface webcam, and display it on-screen.
ANSWER
Answered 2018-Jul-25 at 21:21In my case it was valuable to track the number of failures in sequence, and if it reached some threshold then dispose the camera and reset controls that depended on the camera.
- Call
StopAsync()
on theCapturePreview
object - Call
Dispose()
on theMediaCapture
object
I found that having my camera preview Image
control in a view that was frequently torn down and rebuilt was much less stable than having it my "MainView" and keeping it alive constantly (if it started spamming errors like above, that same Image
was used for reconstruction of the camera).
Other things to keep in mind:
- Mind which threads are handling various things. Naturally you'll need the UI thread for managing your
Image
control(s) - Use of a SemaphoreSlim object was quite useful in making sure that the camera was never being built, disposed, or captured from simultaneously.
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