Bug 1004294 - Improve explore by touch performance. r=yzen

accessible/src/jsat/AccessFu.jsm

@@ -918,10 +918,18 @@ var Input = {
   },
 
   moveToPoint: function moveToPoint(aRule, aX, aY) {
-    let mm = Utils.getMessageManager(Utils.CurrentBrowser);
-    mm.sendAsyncMessage('AccessFu:MoveToPoint', {rule: aRule,
-                                                 x: aX, y: aY,
-                                                 origin: 'top'});
+    // XXX: Bug 1013408 - There is no alignment between the chrome window's
+    // viewport size and the content viewport size in Android. This makes
+    // sending mouse events beyond its bounds impossible.
+    if (Utils.MozBuildApp === 'mobile/android') {
+      let mm = Utils.getMessageManager(Utils.CurrentBrowser);
+      mm.sendAsyncMessage('AccessFu:MoveToPoint',
+        {rule: aRule, x: aX, y: aY, origin: 'top'});
+    } else {
+      let win = Utils.win;
+      Utils.winUtils.sendMouseEvent('mousemove',
+        aX - win.mozInnerScreenX, aY - win.mozInnerScreenY, 0, 0, 0);
+    }
   },
 
   moveCursor: function moveCursor(aAction, aRule, aInputType) {
@@ -999,11 +1007,9 @@ var Input = {
     let page = aDetails.page;
     let p = AccessFu.adjustContentBounds(aDetails.bounds, Utils.CurrentBrowser,
                                          true, true).center();
-    let wu = Utils.win.QueryInterface(Ci.nsIInterfaceRequestor).
-      getInterface(Ci.nsIDOMWindowUtils);
-    wu.sendWheelEvent(p.x, p.y,
-                      horizontal ? page : 0, horizontal ? 0 : page, 0,
-                      Utils.win.WheelEvent.DOM_DELTA_PAGE, 0, 0, 0, 0);
+    Utils.winUtils.sendWheelEvent(p.x, p.y,
+      horizontal ? page : 0, horizontal ? 0 : page, 0,
+      Utils.win.WheelEvent.DOM_DELTA_PAGE, 0, 0, 0, 0);
   },
 
   get keyMap() {

accessible/src/jsat/ContentControl.jsm

@@ -45,6 +45,7 @@ this.ContentControl.prototype = {
     for (let message of this.messagesOfInterest) {
       cs.addMessageListener(message, this);
     }
+    cs.addEventListener('mousemove', this);
   },
 
   stop: function cc_stop() {
@@ -52,6 +53,7 @@ this.ContentControl.prototype = {
     for (let message of this.messagesOfInterest) {
       cs.removeMessageListener(message, this);
     }
+    cs.removeEventListener('mousemove', this);
   },
 
   get document() {
@@ -124,18 +126,22 @@ this.ContentControl.prototype = {
     }
   },
 
+  handleEvent: function cc_handleEvent(aEvent) {
+    if (aEvent.type === 'mousemove') {
+      this.handleMoveToPoint(
+        { json: { x: aEvent.screenX, y: aEvent.screenY, rule: 'Simple' } });
+    }
+    if (!Utils.getMessageManager(aEvent.target)) {
+      aEvent.preventDefault();
+    }
+  },
+
   handleMoveToPoint: function cc_handleMoveToPoint(aMessage) {
     let [x, y] = [aMessage.json.x, aMessage.json.y];
     let rule = TraversalRules[aMessage.json.rule];
-    let vc = this.vc;
-    let win = this.window;
 
-    let dpr = win.devicePixelRatio;
+    let dpr = this.window.devicePixelRatio;
     this.vc.moveToPoint(rule, x * dpr, y * dpr, true);
-
-    let delta = Utils.isContentProcess ?
-      { x: x - win.mozInnerScreenX, y: y - win.mozInnerScreenY } : {};
-    this.sendToChild(vc, aMessage, delta);
   },
 
   handleClearCursor: function cc_handleClearCursor(aMessage) {

accessible/src/jsat/PointerAdapter.jsm

@@ -110,36 +110,14 @@ let PointerRelay = { // jshint ignore:line
     }
   },
 
-  _suppressPointerMove: function PointerRelay__suppressPointerMove(aChangedTouches) {
-    if (!this.lastPointerMove) {
-      return false;
-    }
-    for (let i = 0; i < aChangedTouches.length; ++i) {
-      let touch = aChangedTouches[i];
-      let lastTouch;
-      try {
-        lastTouch = this.lastPointerMove.identifiedTouch ?
-          this.lastPointerMove.identifiedTouch(touch.identifier) :
-          this.lastPointerMove[i];
-      } catch (x) {
-        // Sometimes touch object can't be accessed after page navigation.
-      }
-      if (!lastTouch || lastTouch.target !== touch.target ||
-        Math.hypot(touch.screenX - lastTouch.screenX, touch.screenY -
-          lastTouch.screenY) / Utils.dpi >= GestureSettings.travelThreshold) {
-        return false;
-      }
-    }
-    return true;
-  },
-
   handleEvent: function PointerRelay_handleEvent(aEvent) {
     // Don't bother with chrome mouse events.
     if (Utils.MozBuildApp === 'browser' &&
       aEvent.view.top instanceof Ci.nsIDOMChromeWindow) {
       return;
     }
-    if (aEvent.mozInputSource === Ci.nsIDOMMouseEvent.MOZ_SOURCE_UNKNOWN) {
+    if (aEvent.mozInputSource === Ci.nsIDOMMouseEvent.MOZ_SOURCE_UNKNOWN ||
+        aEvent.isSynthesized) {
       // Ignore events that are scripted or clicks from the a11y API.
       return;
     }
@@ -164,13 +142,6 @@ let PointerRelay = { // jshint ignore:line
       return;
     }
     let pointerType = this._eventMap[type];
-    if (pointerType === 'pointermove') {
-      if (this._suppressPointerMove(changedTouches)) {
-        // Do not fire pointermove more than every POINTERMOVE_THROTTLE.
-        return;
-      }
-      this.lastPointerMove = changedTouches;
-    }
     this.onPointerEvent({
       type: pointerType,
       points: Array.prototype.map.call(changedTouches,

accessible/src/jsat/Utils.jsm

@@ -54,6 +54,15 @@ this.Utils = {
     return this._win.get();
   },
 
+  get winUtils() {
+    let win = this.win;
+    if (!win) {
+      return null;
+    }
+    return win.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(
+      Ci.nsIDOMWindowUtils);
+  },
+
   get AccRetrieval() {
     if (!this._AccRetrieval) {
       this._AccRetrieval = Cc['@mozilla.org/accessibleRetrieval;1'].
@@ -181,7 +190,6 @@ this.Utils = {
       return aBrowser.QueryInterface(Ci.nsIFrameLoaderOwner).
          frameLoader.messageManager;
     } catch (x) {
-      Logger.logException(x);
       return null;
     }
   },
@@ -252,8 +260,7 @@ this.Utils = {
    */
   get dpi() {
     delete this.dpi;
-    this.dpi = this.win.QueryInterface(Ci.nsIInterfaceRequestor).getInterface(
-      Ci.nsIDOMWindowUtils).displayDPI;
+    this.dpi = this.winUtils.displayDPI;
     return this.dpi;
   },