The Tor Browser: widget/windows/nsWindowBase.h@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 4; 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 nsWindowBase_h_

     7 #define nsWindowBase_h_

     9 #include "mozilla/EventForwards.h"

    10 #include "nsBaseWidget.h"

    11 #include "nsClassHashtable.h"

    13 #include <windows.h>

    14 #include "touchinjection_sdk80.h"

    16 /*

    17  * nsWindowBase - Base class of common methods other classes need to access

    18  * in both win32 and winrt window classes.

    19  */

    20 class nsWindowBase : public nsBaseWidget

    21 {

    22 public:

    23   /*

    24    * Return the HWND or null for this widget.

    25    */

    26   virtual HWND GetWindowHandle() MOZ_FINAL {

    27     return static_cast<HWND>(GetNativeData(NS_NATIVE_WINDOW));

    28   }

    30   /*

    31    * Return the parent window, if it exists.

    32    */

    33   virtual nsWindowBase* GetParentWindowBase(bool aIncludeOwner) = 0;

    35   /*

    36    * Return true if this is a top level widget.

    37    */

    38   virtual bool IsTopLevelWidget() = 0;

    40   /*

    41    * Init a standard gecko event for this widget.

    42    * @param aEvent the event to initialize.

    43    * @param aPoint message position in physical coordinates.

    44    */

    45   virtual void InitEvent(mozilla::WidgetGUIEvent& aEvent,

    46                          nsIntPoint* aPoint = nullptr) = 0;

    48   /*

    49    * Dispatch a gecko event for this widget.

    50    * Returns true if it's consumed.  Otherwise, false.

    51    */

    52   virtual bool DispatchWindowEvent(mozilla::WidgetGUIEvent* aEvent) = 0;

    54   /*

    55    * Dispatch a gecko keyboard event for this widget. This

    56    * is called by KeyboardLayout to dispatch gecko events.

    57    * Returns true if it's consumed.  Otherwise, false.

    58    */

    59   virtual bool DispatchKeyboardEvent(mozilla::WidgetGUIEvent* aEvent) = 0;

    61   /*

    62    * Dispatch a gecko scroll event for this widget. This

    63    * is called by ScrollHandler to dispatch gecko events.

    64    * Returns true if it's consumed.  Otherwise, false.

    65    */

    66   virtual bool DispatchScrollEvent(mozilla::WidgetGUIEvent* aEvent) = 0;

    68   /*

    69    * Default dispatch of a plugin event.

    70    */

    71   virtual bool DispatchPluginEvent(const MSG& aMsg);

    73   /*

    74    * Returns true if a plugin has focus on this widget.  Otherwise, false.

    75    */

    76   virtual bool PluginHasFocus() const MOZ_FINAL

    77   {

    78     return (mInputContext.mIMEState.mEnabled == IMEState::PLUGIN);

    79   }

    81   /*

    82    * Touch input injection apis

    83    */

    84   virtual nsresult SynthesizeNativeTouchPoint(uint32_t aPointerId,

    85                                               TouchPointerState aPointerState,

    86                                               nsIntPoint aPointerScreenPoint,

    87                                               double aPointerPressure,

    88                                               uint32_t aPointerOrientation);

    89   virtual nsresult ClearNativeTouchSequence();

    91   /*

    92    * WM_APPCOMMAND common handler. Sends events via DispatchWindowEvent.

    93    */

    94   virtual bool HandleAppCommandMsg(WPARAM aWParam,

    95                                    LPARAM aLParam,

    96                                    LRESULT *aRetValue);

    98 protected:

    99   bool DispatchCommandEvent(uint32_t aEventCommand);

   100   static bool InitTouchInjection();

   101   bool InjectTouchPoint(uint32_t aId, nsIntPoint& aPointerScreenPoint,

   102                         POINTER_FLAGS aFlags, uint32_t aPressure = 1024,

   103                         uint32_t aOrientation = 90);

   105   class PointerInfo

   106   {

   107   public:

   108     PointerInfo(int32_t aPointerId, nsIntPoint& aPoint) :

   109       mPointerId(aPointerId),

   110       mPosition(aPoint)

   111     {

   112     }

   114     int32_t mPointerId;

   115     nsIntPoint mPosition;

   116   };

   118   static PLDHashOperator CancelTouchPoints(const unsigned int& aPointerId, nsAutoPtr<PointerInfo>& aInfo, void* aUserArg);

   120   nsClassHashtable<nsUint32HashKey, PointerInfo> mActivePointers;

   121   static bool sTouchInjectInitialized;

   122   static InjectTouchInputPtr sInjectTouchFuncPtr;

   124 protected:

   125   InputContext mInputContext;

   126 };

   128 #endif // nsWindowBase_h_

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