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      1 /*
      2  * Copyright (C) 2006, 2007 Apple Inc.  All rights reserved.
      3  * Copyright (C) 2007-2008 Torch Mobile Inc.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #include "config.h"
     28 #include "PlatformMouseEvent.h"
     29 
     30 #include <wtf/Assertions.h>
     31 #include <windows.h>
     32 #include <windowsx.h>
     33 
     34 namespace WebCore {
     35 
     36 #define HIGH_BIT_MASK_SHORT 0x8000
     37 
     38 static IntPoint positionForEvent(HWND hWnd, LPARAM lParam)
     39 {
     40     POINT point = {GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)};
     41     return point;
     42 }
     43 
     44 static IntPoint globalPositionForEvent(HWND hWnd, LPARAM lParam)
     45 {
     46     POINT point = {GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam)};
     47     ClientToScreen(hWnd, &point);
     48     return point;
     49 }
     50 
     51 static MouseEventType messageToEventType(UINT message)
     52 {
     53     switch (message) {
     54         case WM_LBUTTONDBLCLK:
     55         case WM_RBUTTONDBLCLK:
     56         case WM_MBUTTONDBLCLK:
     57             //MSDN docs say double click is sent on mouse down
     58         case WM_LBUTTONDOWN:
     59         case WM_RBUTTONDOWN:
     60         case WM_MBUTTONDOWN:
     61             return MouseEventPressed;
     62 
     63         case WM_LBUTTONUP:
     64         case WM_RBUTTONUP:
     65         case WM_MBUTTONUP:
     66             return MouseEventReleased;
     67 
     68 #if !OS(WINCE)
     69         case WM_MOUSELEAVE:
     70 #endif
     71         case WM_MOUSEMOVE:
     72             return MouseEventMoved;
     73 
     74         default:
     75             ASSERT_NOT_REACHED();
     76             //Move is relatively harmless
     77             return MouseEventMoved;
     78     }
     79 }
     80 PlatformMouseEvent::PlatformMouseEvent(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam, bool didActivateWebView)
     81     : m_position(positionForEvent(hWnd, lParam))
     82     , m_globalPosition(globalPositionForEvent(hWnd, lParam))
     83     , m_clickCount(0)
     84     , m_shiftKey(wParam & MK_SHIFT)
     85     , m_ctrlKey(wParam & MK_CONTROL)
     86     , m_altKey(GetKeyState(VK_MENU) & HIGH_BIT_MASK_SHORT)
     87     , m_metaKey(m_altKey) // FIXME: We'll have to test other browsers
     88     , m_didActivateWebView(didActivateWebView)
     89     , m_eventType(messageToEventType(message))
     90     , m_modifierFlags(wParam)
     91 {
     92     m_timestamp = ::GetTickCount()*0.001; // GetTickCount returns milliseconds
     93 
     94     switch (message) {
     95         case WM_LBUTTONDOWN:
     96         case WM_LBUTTONUP:
     97         case WM_LBUTTONDBLCLK:
     98             m_button = LeftButton;
     99             break;
    100         case WM_RBUTTONDOWN:
    101         case WM_RBUTTONUP:
    102         case WM_RBUTTONDBLCLK:
    103             m_button = RightButton;
    104             break;
    105         case WM_MBUTTONDOWN:
    106         case WM_MBUTTONUP:
    107         case WM_MBUTTONDBLCLK:
    108             m_button = MiddleButton;
    109             break;
    110         case WM_MOUSEMOVE:
    111 #if !OS(WINCE)
    112         case WM_MOUSELEAVE:
    113 #endif
    114             if (wParam & MK_LBUTTON)
    115                 m_button = LeftButton;
    116             else if (wParam & MK_MBUTTON)
    117                 m_button = MiddleButton;
    118             else if (wParam & MK_RBUTTON)
    119                 m_button = RightButton;
    120             else
    121                 m_button = NoButton;
    122             break;
    123         default:
    124             ASSERT_NOT_REACHED();
    125     }
    126 }
    127 
    128 } // namespace WebCore
    129