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/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8 -*- */
/* 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 mozilla_dom_plugins_NPEventWindows_h
#define mozilla_dom_plugins_NPEventWindows_h 1
#ifndef WM_MOUSEHWHEEL
#define WM_MOUSEHWHEEL (0x020E)
#endif
#include "npapi.h"
namespace mozilla {
namespace plugins {
// We use an NPRemoteEvent struct so that we can store the extra data on
// the stack so that we don't need to worry about managing the memory.
struct NPRemoteEvent
{
NPEvent event;
union {
RECT rect;
WINDOWPOS windowpos;
} lParamData;
double contentsScaleFactor;
};
}
}
namespace IPC {
template <>
struct ParamTraits<mozilla::plugins::NPRemoteEvent>
{
typedef mozilla::plugins::NPRemoteEvent paramType;
static void Write(Message* aMsg, const paramType& aParam)
{
// Make a non-const copy of aParam so that we can muck with
// its insides for tranport
paramType paramCopy;
paramCopy.event = aParam.event;
// We can't blindly ipc events because they may sometimes contain
// pointers to memory in the sending process. For example, the
// WM_IME_CONTROL with the IMC_GETCOMPOSITIONFONT message has lParam
// set to a pointer to a LOGFONT structure.
switch (paramCopy.event.event) {
case WM_WINDOWPOSCHANGED:
// The lParam parameter of WM_WINDOWPOSCHANGED holds a pointer to
// a WINDOWPOS structure that contains information about the
// window's new size and position
paramCopy.lParamData.windowpos = *(reinterpret_cast<WINDOWPOS*>(paramCopy.event.lParam));
break;
case WM_PAINT:
// The lParam parameter of WM_PAINT holds a pointer to an RECT
// structure specifying the bounding box of the update area.
paramCopy.lParamData.rect = *(reinterpret_cast<RECT*>(paramCopy.event.lParam));
break;
// the white list of events that we will ipc to the client
case WM_CHAR:
case WM_SYSCHAR:
case WM_KEYUP:
case WM_SYSKEYUP:
case WM_KEYDOWN:
case WM_SYSKEYDOWN:
case WM_DEADCHAR:
case WM_SYSDEADCHAR:
case WM_CONTEXTMENU:
case WM_CUT:
case WM_COPY:
case WM_PASTE:
case WM_CLEAR:
case WM_UNDO:
case WM_MOUSELEAVE:
case WM_MOUSEMOVE:
case WM_LBUTTONDOWN:
case WM_MBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_LBUTTONUP:
case WM_MBUTTONUP:
case WM_RBUTTONUP:
case WM_LBUTTONDBLCLK:
case WM_MBUTTONDBLCLK:
case WM_RBUTTONDBLCLK:
case WM_MOUSEWHEEL:
case WM_MOUSEHWHEEL:
case WM_SETFOCUS:
case WM_KILLFOCUS:
case WM_IME_STARTCOMPOSITION:
case WM_IME_COMPOSITION:
case WM_IME_ENDCOMPOSITION:
case WM_IME_CHAR:
case WM_IME_SETCONTEXT:
case WM_IME_COMPOSITIONFULL:
case WM_IME_KEYDOWN:
case WM_IME_KEYUP:
case WM_IME_SELECT:
case WM_INPUTLANGCHANGEREQUEST:
case WM_INPUTLANGCHANGE:
break;
default:
// RegisterWindowMessage events should be passed.
if (paramCopy.event.event >= 0xC000)
break;
// FIXME/bug 567465: temporarily work around unhandled
// events by forwarding a "dummy event". The eventual
// fix will be to stop trying to send these events
// entirely.
paramCopy.event.event = WM_NULL;
break;
}
aMsg->WriteBytes(¶mCopy, sizeof(paramType));
}
static bool Read(const Message* aMsg, PickleIterator* aIter, paramType* aResult)
{
if (!aMsg->ReadBytesInto(aIter, aResult, sizeof(paramType))) {
return false;
}
if (aResult->event.event == WM_PAINT) {
// restore the lParam to point at the RECT
aResult->event.lParam = reinterpret_cast<LPARAM>(&aResult->lParamData.rect);
} else if (aResult->event.event == WM_WINDOWPOSCHANGED) {
// restore the lParam to point at the WINDOWPOS
aResult->event.lParam = reinterpret_cast<LPARAM>(&aResult->lParamData.windowpos);
}
return true;
}
static void Log(const paramType& aParam, std::wstring* aLog)
{
aLog->append(L"(WINEvent)");
}
};
} // namespace IPC
#endif // ifndef mozilla_dom_plugins_NPEventWindows_h
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