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linearView: Cancel workspace scrolling when the user stops dragging

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Currently there is no way for the user to cancel a workspace drag action,
which means the user has to complete the drag action before and move back
to the other workspace manually afterwards.
So cancel the drag action when the user stops.

https://bugzilla.gnome.org/show_bug.cgi?id=618062
This commit is contained in:
Adel Gadllah 2010-05-10 21:28:26 +02:00
parent a90c81b2c7
commit 44c2027b40
1 changed files with 17 additions and 6 deletions
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23
js/ui/workspacesView.js
View File

@ -653,7 +653,7 @@ SingleView.prototype = {
this._scrolling = false; // dragging scroll bar or desktop this._scrolling = false; // dragging scroll bar or desktop
this._animatingScroll = false; // programatically move the scroll bar this._animatingScroll = false; // programatically move the scroll bar
this._inDrag = false; // dragging a window this._inDrag = false; // dragging a window
this._lastMotionTime = -1; // used to track "stopping" while dragging workspaces
let primary = global.get_primary_monitor(); let primary = global.get_primary_monitor();
this._dropGroup = new Clutter.Group({ x: 0, y: 0, this._dropGroup = new Clutter.Group({ x: 0, y: 0,
width: primary.width, width: primary.width,
@ -833,11 +833,21 @@ SingleView.prototype = {
let activate = this._dragIndex; let activate = this._dragIndex;
let last = global.screen.n_workspaces - 1; let last = global.screen.n_workspaces - 1;
// switch workspaces according to the drag direction // If the user has moved more than half a workspace, we want to "settle"
if (stageX > this._dragStartX && activate > 0) // to the new workspace even if the user stops dragging rather "throws"
activate--; // by releasing during the drag.
else if (stageX < this._dragStartX && activate < last) let noStop = Math.abs(activate - this._scroll.adjustment.value) > 0.5;
activate++;
// We detect if the user is stopped by comparing the timestamp of the button
// release with the timestamp of the last motion. Experimentally, a difference
// of 0 or 1 millisecond indicates that the mouse is in motion, a larger
// difference indicates that the mouse is stopped.
if ((this._lastMotionTime > 0 && this._lastMotionTime > event.get_time() - 2) || noStop) {
if (stageX > this._dragStartX && activate > 0)
activate--;
else if (stageX < this._dragStartX && activate < last)
activate++;
}
if (activate != active) { if (activate != active) {
let workspace = this._workspaces[activate].metaWorkspace; let workspace = this._workspaces[activate].metaWorkspace;
@ -859,6 +869,7 @@ SingleView.prototype = {
this._scroll.adjustment.value += (dx / primary.width); this._scroll.adjustment.value += (dx / primary.width);
this._dragX = stageX; this._dragX = stageX;
this._lastMotionTime = event.get_time();
return true; return true;
} }