gecko-dev/widget/windows/nsToolkit.h
2012-05-21 12:12:37 +01:00

90 lines
2.4 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsToolkit_h__
#define nsToolkit_h__
#include "nsdefs.h"
#include "nsITimer.h"
#include "nsCOMPtr.h"
#include <windows.h>
// Avoid including windowsx.h to prevent macro pollution
#ifndef GET_X_LPARAM
#define GET_X_LPARAM(pt) (short(LOWORD(pt)))
#endif
#ifndef GET_Y_LPARAM
#define GET_Y_LPARAM(pt) (short(HIWORD(pt)))
#endif
/**
* Makes sure exit/enter mouse messages are always dispatched.
* In the case where the mouse has exited the outer most window the
* only way to tell if it has exited is to set a timer and look at the
* mouse pointer to see if it is within the outer most window.
*/
class MouseTrailer
{
public:
HWND GetMouseTrailerWindow() { return mMouseTrailerWindow; }
HWND GetCaptureWindow() { return mCaptureWindow; }
void SetMouseTrailerWindow(HWND aWnd);
void SetCaptureWindow(HWND aWnd);
void Disable() { mEnabled = false; DestroyTimer(); }
void Enable() { mEnabled = true; CreateTimer(); }
void DestroyTimer();
MouseTrailer();
~MouseTrailer();
private:
nsresult CreateTimer();
static void TimerProc(nsITimer* aTimer, void* aClosure);
// Information for mouse enter/exit events
HWND mMouseTrailerWindow;
HWND mCaptureWindow;
bool mIsInCaptureMode;
bool mEnabled;
nsCOMPtr<nsITimer> mTimer;
};
/**
* Wrapper around the thread running the message pump.
* The toolkit abstraction is necessary because the message pump must
* execute within the same thread that created the widget under Win32.
*/
class nsToolkit
{
public:
nsToolkit();
private:
~nsToolkit();
public:
static nsToolkit* GetToolkit();
static HINSTANCE mDllInstance;
static MouseTrailer *gMouseTrailer;
static void Startup(HMODULE hModule);
static void Shutdown();
static void StartAllowingD3D9();
protected:
static nsToolkit* gToolkit;
nsCOMPtr<nsITimer> mD3D9Timer;
MouseTrailer mMouseTrailer;
};
#endif // TOOLKIT_H