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

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

     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 nsToolkit_h__

     7 #define nsToolkit_h__

     9 #include "nsdefs.h"

    11 #include "nsITimer.h"

    12 #include "nsCOMPtr.h"

    13 #include <windows.h>

    15 // Avoid including windowsx.h to prevent macro pollution

    16 #ifndef GET_X_LPARAM

    17 #define GET_X_LPARAM(pt) (short(LOWORD(pt)))

    18 #endif

    19 #ifndef GET_Y_LPARAM

    20 #define GET_Y_LPARAM(pt) (short(HIWORD(pt)))

    21 #endif

    23 /**

    24  * Makes sure exit/enter mouse messages are always dispatched.

    25  * In the case where the mouse has exited the outer most window the

    26  * only way to tell if it has exited is to set a timer and look at the

    27  * mouse pointer to see if it is within the outer most window.

    28  */

    30 class MouseTrailer

    31 {

    32 public:

    33     HWND                  GetMouseTrailerWindow() { return mMouseTrailerWindow; }

    34     HWND                  GetCaptureWindow() { return mCaptureWindow; }

    36     void                  SetMouseTrailerWindow(HWND aWnd);

    37     void                  SetCaptureWindow(HWND aWnd);

    38     void                  Disable() { mEnabled = false; DestroyTimer(); }

    39     void                  Enable() { mEnabled = true; CreateTimer(); }

    40     void                  DestroyTimer();

    42                           MouseTrailer();

    43                           ~MouseTrailer();

    44 private:

    46     nsresult              CreateTimer();

    48     static void           TimerProc(nsITimer* aTimer, void* aClosure);

    50     // Information for mouse enter/exit events

    51     HWND                  mMouseTrailerWindow;

    52     HWND                  mCaptureWindow;

    53     bool                  mIsInCaptureMode;

    54     bool                  mEnabled;

    55     nsCOMPtr<nsITimer>    mTimer;

    56 };

    58 /**

    59  * Wrapper around the thread running the message pump.

    60  * The toolkit abstraction is necessary because the message pump must

    61  * execute within the same thread that created the widget under Win32.

    62  */

    64 class nsToolkit

    65 {

    66 public:

    67     nsToolkit();

    69 private:

    70     ~nsToolkit();

    72 public:

    73     static nsToolkit* GetToolkit();

    75     static HINSTANCE mDllInstance;

    76     static MouseTrailer *gMouseTrailer;

    78     static void Startup(HMODULE hModule);

    79     static void Shutdown();

    80     static void StartAllowingD3D9();

    82 protected:

    83     static nsToolkit* gToolkit;

    85     nsCOMPtr<nsITimer> mD3D9Timer;

    86     MouseTrailer mMouseTrailer;

    87 };

    89 #endif  // TOOLKIT_H

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