I'm playing a bit with AMI Medical Imaging (AMI) JS ToolKit. Is there a way to move the windowing to a mouse event like right click & move?
I know that it's possible to change window/level with the menus on the examples, but I would like to change the controller to do it moving the mouse.
Thanks!
To control the window/level by moving the mouse you will have to listen to the mousemouve
event then update the stackHelper -> slice -> windowWidth/Center
as you wish.
You could enable window/level if the user press shift
:
var drag = {
x: null,
y: null
}
var shiftDown = false;
function onKeyPressed(event){
shiftDown = event.shiftKey;
if(!shiftDown){
drag.x = null;
drag.y = null;
}
}
container.addEventListener('keydown', onKeyPressed);
container.addEventListener('keyup', onKeyPressed);
Then update the window/level on mouse move:
function onMouseMove(event){
if(!shiftDown || !stack || !stackHelper){
return;
}
if(drag.x === null){
drag.x = event.offsetX;
drag.y = event.offsetY;
}
var threshold = 15;
var dynamicRange = stack.minMax[1] - stack.minMax[0];
dynamicRange /= container.clientWidth;
if(Math.abs(event.offsetX - drag.x) > threshold){
// window width
stackHelper.slice.windowWidth += dynamicRange * (event.offsetX - drag.x);
drag.x = event.offsetX;
}
if(Math.abs(event.offsetY - drag.y) > threshold){
// window center
stackHelper.slice.windowCenter -= dynamicRange * (event.offsetY - drag.y);
drag.y = event.offsetY;
}
}
container.addEventListener('mousemove', onMouseMove);
See a live demo at (shift + mouse move to control the window level): http://jsfiddle.net/vabL3qo0/41/