mousemove

问题 I'm trying to use a mousemove event on a canvas, inspired from Wayne's answer here, and the corresponding fiddle. The problem is, I'm working with a code which creates "layered" canvas in the following way: // canvas data layers ["marks", "foreground", "brushed", "highlight", "clickable_colors"].forEach(function(layer, i) { canvas[layer] = selection .append("canvas") .attr({ id: layer, //added an id for easier selecting for mouse event class: layer, style: "z-index: " + i +10000000 })[0][0];

问题 I have a list of elements so i want to write a function to drag those elements into a container that builds up an object. At the moment in my protractor tests I have found the element. The element is present and is displayed. The only place I'm running into problems is when I try to translate or drag and drop its position on the screen. At the moment i'm using browser.actions().dragAndDrop(element1.getWebElement(), { x: -500, y: 20 }).perform(); In order to try drag it -500px to the left and

问题 I am trying to create a neat way to stop an AJAX called based upon if the browser is in focus, and if the mouse moves.. So here's what I want it to do: If the user goes to a different tab in their browser, minimized the window, or goes somewhere else other than the web app, I want it to kill the AJAX calls in 1 minute. If the user moves the mouse anywhere in the web app, it should consider the user "focused" on the app, and thus continue the ajax calls. I put a timeout called "st" in there to

问题 In my Qt application, I need to track mouse movement. For that, I created an eventfilter and I installed it correctly as this: bool iArmMainWindow::eventFilter(QObject *obj, QEvent *event) { if (event->type() == QEvent::MouseMove)//not working { iarm->printStatus("hi"); //this is for debugging } if (event->type() == QEvent::MouseButtonPress){ //Here some staff working correctly } //other staff } The problem is that the event type MouseMove does not work. Any idea? 回答1: You should say to Qt,

问题 I'm attempting to get a square shape to follow my mouse around on the canvas using "mousemove". function start(){ var canvastmp = document.getElementById("myCanvas") var canvas = canvastmp.getContext("2d"); window.addEventListener('mousemove', trevor, false); } function trevor(pos){ canvas.clearRect(0,0,600,400); var x = pos.clientX; var y = pos.clientY; canvas.fillRect(x-25,y-25,100,100); } window.addEventListener('load',start,false); When I run it, nothing at all shows up. I've been

问题 Whenever I run a mouseMove command for a robot, the mouse doesn't always go to the same location. For example, I have the following code: import java.awt.Robot; import java.util.concurrent.TimeUnit; public class MainBot { public static void main(String[] args){ try { Robot screenWin = new Robot(); TimeUnit.SECONDS.sleep(2); screenWin.mouseMove(100, 300); } catch (Exception e) { e.printStackTrace(); } } } The code usually makes the mouse end up at the X: First, I hit run (I am using eclipse)

问题 I'm running a relatively simple function (update a span 's innerHTML ) on mousemove . The application is a Leaflet map. When the mouse is moving, there is palpable lag when zooming, panning and loading tiles. I only need to update the span about 10-20 times per second at most. (See here for the page in question; the update is for the X/Z indicator in the upper-right corner.) What's the best way to delay and/or defer mousemove event calls? Is it good enough to skip updating innerHTML ? Can I

问题 I have an iframe inside of a parent window, with both the iframe src and the parent located in the same domain. In order to keep the iframe document clear of javascript I want to be able to use a function in the parent window to get the the mouse position inside the iframe. My attempts at this so far have included: <iframe id="iframe1" src="test.html" style="position:relative; width:500px; height:500px"></iframe> <div id="result" style="border:1px solid black"></div> <script> $(document).bind

问题 I'm using WM_MOUSEMOVE to get changes in mouse position. When simulating "knobs" for example it's desired to let the user go up/down with mouse without any limits. In this cases I hide cursor and use SetCursorPos to change its position every time user moves with it and detect just the difference from the original position. Unfortunately it doesn't seem to work - if I set the mouse position, it sometimes works, but sometimes is one or more pixels away, which is just wrong. And even bigger

问题 If a WPF ListBox gets a MouseMove event while the mouse button is held down, it will change the listbox's selection. That is, if you click the mouse on item #1, and then drag over item #2, it will deselect item #1 and select item #2 instead. How can I prevent this? That's the short version. The slightly longer version is this: When the user double-clicks an item in my ListBox, I make other changes to my layout, which includes showing other controls above the ListBox. This moves the ListBox