I run computationally expensive code when the cursor changes and this becomes obvious when the user is selecting a lot of text.
I'd like to know if the mouse is down or up so I can ignore the cursor change events if the user is dragging. When they let go of the mouse down button I can run my code on mouse up or on cursor change events when the mouse is up.
Is there a way to tell if the mouse is down in ace editor?
You can use event listeners on ace editor. The mousedown event should help you in this case.
editor.on("mousedown", function () {
console.log("mouse down");
});
There is editor.$mouseHandler.isMousePressed property.
Related
It took me a while to figure out the problem with Unity UI Button Transition:
Problem:
I hover on the button object, it goes to highlighted state, that's Fine. If I press mouse on button and it goes to pressed state then I move mouse outside of button so its no longer over button. The button goes to highlighted state instead of normal state. I need to click in empty space to get the normal state of button.
TLDR:
To retain keyboard automatic navigation, you probably want to inherit from IPointerExitHandler and deselect on exit:
public void OnPointerExit(PointerEventData data)
{
EventSystem.current.SetSelectedGameObject(null);
}
You could add checks to only deselect gameObject if already selected.
This is the default behaviour for a Button element in Unity - it retains focus after the initial interaction, causing it to show the Highlighted Color. Clicking away clears the focus, so it no longer becomes highlighted then.
To change this behaviour, you can switch the Navigation setting.
Currently, it's set to Automatic. According to the documentation, the option you want to use instead is None, which results in:
No keyboard navigation. Also ensures that it does not receive focus from clicking/tapping on it.
Hope this helps! Let me know if you have any questions.
If you want to use keyboard navigation and also get rid of this problem you can add this function to update:
void Update()
{
if (Input.GetMouseButtonUp(0))
{
EventSystem.current.SetSelectedGameObject(null);
}
}
I would like to start a slider action programmatically. So pressing on some text in a NSTextView that displays a slider also automatically starts the mousedown event on the slider so you can drag immediately instead of pressing twice. What approach should i take on this? Should i listen for global mouse events and then manually update the slider position, or can i somehow imitate the systems mouseDown / mouseMoved calls on the NSSlider?
How to detect a mouse click (or mousedown) event on a simple dropdown combo (combobox with style=1)?
I am unable to see mouseclick or mousedown event handlers for combobox in my vb6 IDE.
My aim is to detect right click.
Thanks in advance.
If the events aren't exposed, you may need to subclass the control and handle the WM_RBUTTONDOWN message.
When you push down the left mouse button mouse down event fires. If you then move the mouse over a label (while holding the mouse button down) mouse over event does not fire.
Is there any way to enable this events or fire them manualy or simulate them?
What you are actually doing is two separate events, one is a mouse down event as you have described and the other is a mouse drag.
If you want to simulate them, that you might have to consider using a mouse click to track the user's (x,y) location. Subsequently, if you want to "simulate" it you could do some computation and decide for yourself if it is indeed a mouse click or mouse drag event that has occurred.
Hope it helps :) Cheers!
Obviously you dont have a mouse over effect on a touchscreen, but I would like some effect, maybe onclick? Does anybody have any suggestions?
On the touchscreen I'm working with right now, the mouse over is a persistent effect of clicks. In other words, it's as if after clicking an item with an actual mouse and releasing the button, one never moved the mouse pointer afterwards.