lohacms.blogg.se - Get mouse coordinates of svg group object javascript

#Get mouse coordinates of svg group object javascript how to#
#Get mouse coordinates of svg group object javascript update#
#Get mouse coordinates of svg group object javascript code#

This will fire if the clicked element matches the selector or has a parent that does. With this technique, you change matches() to closest() in your event listener.

You can disable clicking on SVGs so that the event fires on the parent button instead of the SVG and it’s child elements.

Instead of checking if the clicked event matches a specific selector (with the matches() method), you can check if it occurred within a selector using the closest() method. By default when you use mouse wheel or pinch to zoom, panzoom uses mouse coordinates to determine the central point of the zooming operation.

#Get mouse coordinates of svg group object javascript how to#

How to fix itįortunately, there are two easy ways to fix this. As a result, ('.click-me') fails and the function stops running.

When you click on the SVG, the event.target is no longer the button.click-me element, but the path inside the SVG or the svg element itself. What’s happening here?Īn SVG is an HTML object, with nested items inside it. Var mp = webMercatorUtils.webMercatorToGeographic(evt.mapPoint) ĭom.byId("info").innerHTML = mp.x.toFixed(3) + ", " + mp.y.Our event listener stops working.

the map is in web mercator but display coordinates in geographic (lat, long) after map loads, connect to listen to mouse move & drag events

SVG with Groups with movement using Blazor Introduction The idea is to have an SVG Canvas

"esri/map", "esri/geometry/webMercatorUtils", "dojo/dom", I want to release in the future a web app that requires moving elements inside a canvas. Using a simple logging function the coordinates I receive (plus or minus 5 for mouse imprecision) are (98, 473), (487, 470), (969, 471), (969, 190).

#Get mouse coordinates of svg group object javascript code#

Var mp = (evt.mapPoint) ĭojo.byId("info").innerHTML = mp.x + ", " + mp.y Code To test this in a simple manner, I put three rectangles in global svg space at (100, 500), (500, 500), (1000, 500), and (1000, 200). Following is how the function gets the coordinates and writes them to the "info" tag: To display the coordinates in geographic, use the utility object to perform the conversion. The first (var map) is the name of the object, the second ( esri.Map) is the name of the class, and the third ('map') is the. The following line creates the map: var map new esri.Map('map') 'Map' appears three times in the above line. Of course, it was a bit more complicated, but this is the code i want to share with you.

#Get mouse coordinates of svg group object javascript update#

Since the map data is in Web Mercator the resulting coordinates will display in Web Mercator. This is made possible by event listeners that update the the x and y coordinates whenever the mouse moves. I had to display several photos where the user can click over an interesting point and have its coordinates passed through a form. These events both pass map point coordinates to the showCoordinates function. One listens for onMouseMove and the other listens for onMouseDrag, but they both call the function showCoordinates:ĭojo.connect(map, "onMouseMove", showCoordinates) ĭojo.connect(map, "onMouseDrag", showCoordinates) Positions are then measured in pixels from the top left corner, with the positive x. That is, the top left corner of the document is considered to be the point (0,0), or point of origin. These two lines add event listeners to the map. For all elements, SVG uses a coordinate system or grid system similar to the one used by canvas (and by a whole lot of other computer drawing routines). The first (var map) is the name of the object, the second ( esri.Map) is the name of the class, and the third ("map") is the name of the div which will contain the map. "Map" appears three times in the above line. This is made possible by event listeners that update the the x and y coordinates while the mouse moves. This sample reports the coordinates of the mouse pointer as the user hovers or drags the mouse across the map.