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Clean up handling of viewport-relative coordinates. Modify absolute touch support to properly handle scrolled viewport.

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This commit is contained in:
Michael Jumper
2012-07-29 20:57:45 -07:00
parent 182f8e891a
commit 3e8d14e699
1 changed files with 49 additions and 35 deletions
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84
guacamole-common-js/src/main/resources/mouse.js
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@@ -133,36 +133,6 @@ Guacamole.Mouse = function(element) {
e.returnValue = false;
}
function moveMouse(clientX, clientY) {
guac_mouse.currentState.x = clientX - element.offsetLeft;
guac_mouse.currentState.y = clientY - element.offsetTop;
// This is all JUST so we can get the mouse position within the element
var parent = element.offsetParent;
while (parent && !(parent === document.body)) {
guac_mouse.currentState.x -= parent.offsetLeft - parent.scrollLeft;
guac_mouse.currentState.y -= parent.offsetTop - parent.scrollTop;
parent = parent.offsetParent;
}
// Offset by document scroll amount
var documentScrollLeft = document.body.scrollLeft || document.documentElement.scrollLeft;
var documentScrollTop = document.body.scrollTop || document.documentElement.scrollTop;
guac_mouse.currentState.x -= parent.offsetLeft - documentScrollLeft;
guac_mouse.currentState.y -= parent.offsetTop - documentScrollTop;
if (guac_mouse.onmousemove)
deferred_mouse_event = window.setTimeout(function() {
guac_mouse.onmousemove(guac_mouse.currentState);
deferred_mouse_event = null;
}, 0);
}
// Block context menu so right-click gets sent properly
element.addEventListener("contextmenu", function(e) {
cancelEvent(e);
@@ -179,7 +149,13 @@ Guacamole.Mouse = function(element) {
if (ignore_mouse)
return;
moveMouse(e.clientX, e.clientY);
guac_mouse.currentState.fromClientPosition(element, e.clientX, e.clientY);
if (guac_mouse.onmousemove)
deferred_mouse_event = window.setTimeout(function() {
guac_mouse.onmousemove(guac_mouse.currentState);
deferred_mouse_event = null;
}, 0);
}, false);
@@ -700,8 +676,7 @@ Guacamole.Mouse.Touchscreen = function(element) {
// Update state
guac_touchscreen.currentState.left = true;
guac_touchscreen.currentState.x = touch.clientX;
guac_touchscreen.currentState.y = touch.clientY;
guac_touchscreen.currentState.fromClientPosition(element, touch.clientX, touch.clientY);
// Fire press event, if defined
if (guac_touchscreen.onmousedown)
@@ -723,8 +698,7 @@ Guacamole.Mouse.Touchscreen = function(element) {
var touch = e.touches[0];
// Update state
guac_touchscreen.currentState.x = touch.clientX;
guac_touchscreen.currentState.y = touch.clientY;
guac_touchscreen.currentState.fromClientPosition(element, touch.clientX, touch.clientY);
// Fire movement event, if defined
if (guac_touchscreen.onmousemove)
@@ -750,6 +724,12 @@ Guacamole.Mouse.Touchscreen = function(element) {
*/
Guacamole.Mouse.State = function(x, y, left, middle, right, up, down) {
/**
* Reference to this Guacamole.Mouse.State.
* @private
*/
var guac_state = this;
/**
* The current X position of the mouse pointer.
* @type Number
@@ -795,6 +775,40 @@ Guacamole.Mouse.State = function(x, y, left, middle, right, up, down) {
* @type Boolean
*/
this.down = down;
/**
* Updates the position represented within this state object by the given
* element and clientX/clientY coordinates (commonly available within event
* objects). Position is translated from clientX/clientY (relative to
* viewport) to element-relative coordinates.
*
* @param {Element} element The element the coordinates should be relative
* to.
* @param {Number} clientX The X coordinate to translate, viewport-relative.
* @param {Number} clientY The Y coordinate to translate, viewport-relative.
*/
this.fromClientPosition = function(element, clientX, clientY) {
guac_state.x = clientX - element.offsetLeft;
guac_state.y = clientY - element.offsetTop;
// This is all JUST so we can get the mouse position within the element
var parent = element.offsetParent;
while (parent && !(parent === document.body)) {
guac_state.x -= parent.offsetLeft - parent.scrollLeft;
guac_state.y -= parent.offsetTop - parent.scrollTop;
parent = parent.offsetParent;
}
// Offset by document scroll amount
var documentScrollLeft = document.body.scrollLeft || document.documentElement.scrollLeft;
var documentScrollTop = document.body.scrollTop || document.documentElement.scrollTop;
guac_state.x -= parent.offsetLeft - documentScrollLeft;
guac_state.y -= parent.offsetTop - documentScrollTop;
};
};