зеркало из https://github.com/mozilla/gecko-dev.git
134 строки
4.5 KiB
C++
134 строки
4.5 KiB
C++
/* -*- Mode: c++; tab-width: 2; indent-tabs-mode: nil; -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* IBM Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2003
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Michael Lowe <michael.lowe@bigfoot.com>
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* John Fairhurst <john_fairhurst@iname.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsAppShell.h"
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#include "nsThreadUtils.h"
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static UINT sMsgId;
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//-------------------------------------------------------------------------
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MRESULT EXPENTRY EventWindowProc(HWND hwnd, ULONG msg, MPARAM mp1, MPARAM mp2)
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{
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if (msg == sMsgId) {
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nsAppShell *as = reinterpret_cast<nsAppShell *>(mp2);
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as->NativeEventCallback();
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NS_RELEASE(as);
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return (MRESULT)TRUE;
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}
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return WinDefWindowProc(hwnd, msg, mp1, mp2);
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}
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nsAppShell::~nsAppShell()
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{
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if (mEventWnd) {
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// DestroyWindow doesn't do anything when called from a non UI thread.
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// Since mEventWnd was created on the UI thread, it must be destroyed on
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// the UI thread.
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WinSendMsg(mEventWnd, WM_CLOSE, 0, 0);
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}
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}
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nsresult
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nsAppShell::Init()
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{
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// a message queue is required to create a window but
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// it is not necessarily created yet
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if (WinQueryQueueInfo(HMQ_CURRENT, NULL, 0) == FALSE) {
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// Set our app to be a PM app before attempting Win calls
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PPIB ppib;
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PTIB ptib;
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DosGetInfoBlocks(&ptib, &ppib);
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ppib->pib_ultype = 3;
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HAB hab = WinInitialize(0);
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WinCreateMsgQueue(hab, 0);
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}
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if (!sMsgId) {
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sMsgId = WinAddAtom( WinQuerySystemAtomTable(), "nsAppShell:EventID");
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WinRegisterClass((HAB)0, "nsAppShell:EventWindowClass", EventWindowProc, NULL, 0);
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}
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mEventWnd = ::WinCreateWindow(HWND_DESKTOP,
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"nsAppShell:EventWindowClass",
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"nsAppShell:EventWindow",
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0,
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0, 0,
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10, 10,
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HWND_DESKTOP,
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HWND_BOTTOM,
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0, 0, 0);
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NS_ENSURE_STATE(mEventWnd);
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return nsBaseAppShell::Init();
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}
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void
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nsAppShell::ScheduleNativeEventCallback()
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{
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// post a message to the native event queue...
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NS_ADDREF_THIS();
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WinPostMsg(mEventWnd, sMsgId, 0, reinterpret_cast<MPARAM>(this));
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}
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bool
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nsAppShell::ProcessNextNativeEvent(bool mayWait)
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{
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bool gotMessage = false;
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do {
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QMSG qmsg;
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// Give priority to system messages (in particular keyboard, mouse, timer,
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// and paint messages).
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if (WinPeekMsg((HAB)0, &qmsg, NULL, WM_CHAR, WM_VIOCHAR, PM_REMOVE) ||
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WinPeekMsg((HAB)0, &qmsg, NULL, WM_MOUSEFIRST, WM_MOUSELAST, PM_REMOVE) ||
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WinPeekMsg((HAB)0, &qmsg, NULL, 0, WM_USER-1, PM_REMOVE) ||
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WinPeekMsg((HAB)0, &qmsg, NULL, 0, 0, PM_REMOVE)) {
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gotMessage = true;
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::WinDispatchMsg((HAB)0, &qmsg);
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} else if (mayWait) {
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// Block and wait for any posted application message
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::WinWaitMsg((HAB)0, 0, 0);
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}
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} while (!gotMessage && mayWait);
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return gotMessage;
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}
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