Toggle mouse coordinates update#
Toggle mouse coordinates code#

All thats needed to get the useful coordinates is.

The very simplest approach was already posted here. The last line makes things convenient for getting the mouse coordinates relative to a canvas element. (from MDN) The amount of scrolling that has been done of the viewport area (orĪny other scrollable element) is taken into account when computing the Please note that the main menu does NOT support a mouse and the app you are running must have mouse support. Works just like a regular mouse that can click, long click, wheel up, wheel down, and drag. This includes scrolling, so stuff like scrollTop is not needed: Add a mouse mode to your stock Amazon Fire TV remote control. The HTMLElement.getBoundingClientRect method is designed to to handle actual screen position of any element. I'm not sure what's the point of all these answers that loop through parent elements and do all kinds of weird stuff. function relMouseCoords(event)%)` Ĭanvas deliberately has differnt CSS size vs drawingbuffer size

Toggle mouse coordinates code#

This code works perfectly for me, tested in Firefox and Safari but should work for all. To account for this you need to loop through the chain of offsetParents, beginning with the canvas element itself. Absolute : Displays coordinates relative to the current UCS. This option is available only when you are specifying multiple points, distances or angles. The menu options are: Relative : Displays coordinates relative to the point you most recently specified. It will return the number of pixels it is offset relative to its offsetParent element, which can be something like a div element containing the canvas with a position: relative style applied. The coordinates of the mouse whenever a click takes place can be found by detecting the click event with an event listener and finding the event’s x and y position. Find Right-click the button to chose the type of coordinates to display. Since the canvas isn't always styled relative to the entire page, the canvas.offsetLeft/Top doesn't always return what you need. It Works Perfectly though, I would give it a 5 star review, if only there was an option that allowed you to look at the coordinates in a corner of the screen.

Toggle mouse coordinates update#

Update (5/5/16): patriques' answer should be used instead, as it's both simpler and more reliable.