161 lines
4.9 KiB
C++
161 lines
4.9 KiB
C++
/* -*- Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 8 -*- */
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/* vim: set sw=4 ts=8 et tw=80 ft=cpp : */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_plugins_NPEventWindows_h
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#define mozilla_dom_plugins_NPEventWindows_h 1
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#ifndef WM_MOUSEHWHEEL
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#define WM_MOUSEHWHEEL (0x020E)
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#endif
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#include "npapi.h"
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namespace mozilla {
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namespace plugins {
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// We use an NPRemoteEvent struct so that we can store the extra data on
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// the stack so that we don't need to worry about managing the memory.
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struct NPRemoteEvent
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{
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NPEvent event;
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union {
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RECT rect;
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WINDOWPOS windowpos;
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} lParamData;
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double contentsScaleFactor;
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};
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}
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}
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namespace IPC {
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template <>
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struct ParamTraits<mozilla::plugins::NPRemoteEvent>
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{
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typedef mozilla::plugins::NPRemoteEvent paramType;
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static void Write(Message* aMsg, const paramType& aParam)
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{
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// Make a non-const copy of aParam so that we can muck with
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// its insides for tranport
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paramType paramCopy;
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paramCopy.event = aParam.event;
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// We can't blindly ipc events because they may sometimes contain
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// pointers to memory in the sending process. For example, the
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// WM_IME_CONTROL with the IMC_GETCOMPOSITIONFONT message has lParam
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// set to a pointer to a LOGFONT structure.
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switch (paramCopy.event.event) {
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case WM_WINDOWPOSCHANGED:
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// The lParam parameter of WM_WINDOWPOSCHANGED holds a pointer to
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// a WINDOWPOS structure that contains information about the
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// window's new size and position
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paramCopy.lParamData.windowpos = *(reinterpret_cast<WINDOWPOS*>(paramCopy.event.lParam));
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break;
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case WM_PAINT:
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// The lParam parameter of WM_PAINT holds a pointer to an RECT
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// structure specifying the bounding box of the update area.
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paramCopy.lParamData.rect = *(reinterpret_cast<RECT*>(paramCopy.event.lParam));
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break;
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// the white list of events that we will ipc to the client
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case WM_CHAR:
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case WM_SYSCHAR:
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case WM_KEYUP:
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case WM_SYSKEYUP:
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case WM_KEYDOWN:
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case WM_SYSKEYDOWN:
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case WM_DEADCHAR:
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case WM_SYSDEADCHAR:
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case WM_CONTEXTMENU:
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case WM_CUT:
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case WM_COPY:
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case WM_PASTE:
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case WM_CLEAR:
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case WM_UNDO:
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case WM_MOUSELEAVE:
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case WM_MOUSEMOVE:
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case WM_LBUTTONDOWN:
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case WM_MBUTTONDOWN:
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case WM_RBUTTONDOWN:
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case WM_LBUTTONUP:
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case WM_MBUTTONUP:
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case WM_RBUTTONUP:
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case WM_LBUTTONDBLCLK:
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case WM_MBUTTONDBLCLK:
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case WM_RBUTTONDBLCLK:
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case WM_MOUSEWHEEL:
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case WM_MOUSEHWHEEL:
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case WM_SETFOCUS:
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case WM_KILLFOCUS:
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case WM_IME_STARTCOMPOSITION:
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case WM_IME_COMPOSITION:
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case WM_IME_ENDCOMPOSITION:
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case WM_IME_CHAR:
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case WM_IME_SETCONTEXT:
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case WM_IME_COMPOSITIONFULL:
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case WM_IME_KEYDOWN:
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case WM_IME_KEYUP:
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case WM_IME_SELECT:
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case WM_INPUTLANGCHANGEREQUEST:
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case WM_INPUTLANGCHANGE:
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break;
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default:
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// RegisterWindowMessage events should be passed.
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if (paramCopy.event.event >= 0xC000)
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break;
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// FIXME/bug 567465: temporarily work around unhandled
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// events by forwarding a "dummy event". The eventual
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// fix will be to stop trying to send these events
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// entirely.
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paramCopy.event.event = WM_NULL;
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break;
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}
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aMsg->WriteBytes(¶mCopy, sizeof(paramType));
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}
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static bool Read(const Message* aMsg, PickleIterator* aIter, paramType* aResult)
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{
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if (!aMsg->ReadBytesInto(aIter, aResult, sizeof(paramType))) {
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return false;
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}
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if (aResult->event.event == WM_PAINT) {
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// restore the lParam to point at the RECT
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aResult->event.lParam = reinterpret_cast<LPARAM>(&aResult->lParamData.rect);
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} else if (aResult->event.event == WM_WINDOWPOSCHANGED) {
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// restore the lParam to point at the WINDOWPOS
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aResult->event.lParam = reinterpret_cast<LPARAM>(&aResult->lParamData.windowpos);
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}
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return true;
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}
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static void Log(const paramType& aParam, std::wstring* aLog)
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{
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aLog->append(L"(WINEvent)");
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}
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};
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} // namespace IPC
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#endif // ifndef mozilla_dom_plugins_NPEventWindows_h
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