The Tor Browser: widget/xpwidgets/ContentHelper.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef __mozilla_widget_ContentHelper_h__

     7 #define __mozilla_widget_ContentHelper_h__

     9 #include "nsIFrame.h"

    10 #include "nsIWidget.h"

    11 #include "mozilla/layers/APZCTreeManager.h"

    13 namespace mozilla {

    14 namespace widget {

    16 /*

    17  * Allow different platform widgets to access Content/DOM stuff.

    18  */

    19 class ContentHelper

    20 {

    21   typedef mozilla::layers::AllowedTouchBehavior AllowedTouchBehavior;

    22   typedef uint32_t TouchBehaviorFlags;

    24 private:

    25   static uint32_t GetTouchActionFromFrame(nsIFrame* aFrame);

    26   static void UpdateAllowedBehavior(uint32_t aTouchActionValue, bool aConsiderPanning, TouchBehaviorFlags& aOutBehavior);

    28 public:

    29   /*

    30    * Performs hit testing on content, finds frame that corresponds to the aPoint and retrieves

    31    * touch-action css property value from it according the rules specified in the spec:

    32    * http://www.w3.org/TR/pointerevents/#the-touch-action-css-property.

    33    */

    34   static TouchBehaviorFlags GetAllowedTouchBehavior(nsIWidget* aWidget, const nsIntPoint& aPoint);

    35 };

    37 }

    38 }

    40 #endif /*__mozilla_widget_ContentHelper_h__ */

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