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GUAC-1244: Replace timeout with better line/page constants. Reset scroll_delta so the delta doesn't have to evenly divide into scrollThreshold.

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This commit is contained in:
Michael Jumper
2015-07-07 20:33:02 -07:00
parent 198951a3d9
commit 3d3149246a
1 changed files with 44 additions and 50 deletions
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38
guacamole-common-js/src/main/webapp/modules/Mouse.js
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@@ -39,12 +39,6 @@ Guacamole.Mouse = function(element) {
*/ */
var guac_mouse = this; var guac_mouse = this;
/**
* Timeout before a single mouse scroll happens.
* @type Number
*/
var mouse_scroll_timeout = null;
/** /**
* The number of mousemove events to require before re-enabling mouse * The number of mousemove events to require before re-enabling mouse
* event handling after receiving a touch event. * event handling after receiving a touch event.
@@ -55,17 +49,17 @@ Guacamole.Mouse = function(element) {
* The minimum amount of pixels scrolled required for a single scroll button * The minimum amount of pixels scrolled required for a single scroll button
* click. * click.
*/ */
this.scrollThreshold = 120; this.scrollThreshold = 53;
/** /**
* The number of pixels to scroll per line. * The number of pixels to scroll per line.
*/ */
this.PIXELS_PER_LINE = 40; this.PIXELS_PER_LINE = 18;
/** /**
* The number of pixels to scroll per page. * The number of pixels to scroll per page.
*/ */
this.PIXELS_PER_PAGE = 640; this.PIXELS_PER_PAGE = this.PIXELS_PER_LINE * 16;
/** /**
* The current mouse state. The properties of this state are updated when * The current mouse state. The properties of this state are updated when
@@ -279,13 +273,10 @@ Guacamole.Mouse = function(element) {
// Update overall delta // Update overall delta
scroll_delta += delta; scroll_delta += delta;
if (mouse_scroll_timeout === null) {
// Send actual mouse scroll event after a threshold
mouse_scroll_timeout = window.setTimeout(function () {
// Up // Up
if (scroll_delta < 0) { if (scroll_delta <= -guac_mouse.scrollThreshold) {
// Repeatedly click the up button until insufficient delta remains
do { do {
if (guac_mouse.onmousedown) { if (guac_mouse.onmousedown) {
@@ -300,11 +291,17 @@ Guacamole.Mouse = function(element) {
scroll_delta += guac_mouse.scrollThreshold; scroll_delta += guac_mouse.scrollThreshold;
} while (scroll_delta < 0); } while (scroll_delta <= -guac_mouse.scrollThreshold);
// Reset delta
scroll_delta = 0;
} }
// Down // Down
else if (scroll_delta > 0) { if (scroll_delta >= guac_mouse.scrollThreshold) {
// Repeatedly click the down button until insufficient delta remains
do { do {
if (guac_mouse.onmousedown) { if (guac_mouse.onmousedown) {
@@ -319,14 +316,11 @@ Guacamole.Mouse = function(element) {
scroll_delta -= guac_mouse.scrollThreshold; scroll_delta -= guac_mouse.scrollThreshold;
} while (scroll_delta > 0); } while (scroll_delta >= guac_mouse.scrollThreshold);
}
// Reset delta
scroll_delta = 0; scroll_delta = 0;
window.clearTimeout(mouse_scroll_timeout);
mouse_scroll_timeout = null;
}, 100);
} }
cancelEvent(e); cancelEvent(e);