/*** $Id: message.c,v 1.22.6.1 2005/02/15 08:27:56 weiym Exp $**** message.c: The Messaging module.**** Copyright (C) 2003 Feynman Software.** Copyright (C) 2000 ~ 2002 Wei Yongming.**** Current maintainer: Wei Yongming.**** Create date: 2000/11/05*//*** This program is free software; you can redistribute it and/or modify** it under the terms of the GNU General Public License as published by** the Free Software Foundation; either version 2 of the License, or** (at your option) any later version.**** This program is distributed in the hope that it will be useful,** but WITHOUT ANY WARRANTY; without even the implied warranty of** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the** GNU General Public License for more details.**** You should have received a copy of the GNU General Public License** along with this program; if not, write to the Free Software** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA*//*** TODO:*/#include <stdio.h>#include <stdlib.h>#include <string.h>#include "common.h"#include "minigui.h"#include "gdi.h"#include "window.h"#include "blockheap.h"#include "cliprect.h"#include "gal.h"#include "internals.h"#include "ctrlclass.h"#include "timer.h"/****************************** Message support ******************************/static BLOCKHEAP QMSGHeap;/* QMSG allocation */BOOL InitFreeQMSGList (void){    InitBlockDataHeap (&QMSGHeap, sizeof (QMSG), SIZE_QMSG_HEAP);    return TRUE;}void DestroyFreeQMSGList (void){    DestroyBlockDataHeap (&QMSGHeap);}inline static PQMSG QMSGAlloc (void){    return (PQMSG) BlockDataAlloc (&QMSGHeap);}inline static void FreeQMSG (PQMSG pqmsg){    BlockDataFree (&QMSGHeap, pqmsg);}BOOL InitMsgQueue (PMSGQUEUE pMsgQueue, int iBufferLen){    int i;        pMsgQueue->dwState = QS_EMPTY;#ifndef _LITE_VERSION    pthread_mutex_init (&pMsgQueue->lock, NULL);    sem_init (&pMsgQueue->wait, 0, 0);#endif    pMsgQueue->pFirstNotifyMsg = NULL;    pMsgQueue->pLastNotifyMsg = NULL;    pMsgQueue->readpos = 0;    pMsgQueue->writepos = 0;#ifndef _LITE_VERSION    pMsgQueue->pFirstSyncMsg = NULL;    pMsgQueue->pLastSyncMsg = NULL;#endif    if (iBufferLen <= 0)        iBufferLen = DEF_MSGQUEUE_LEN;            pMsgQueue->msg = malloc (sizeof (MSG) * iBufferLen);    pMsgQueue->len = iBufferLen;#ifndef _LITE_VERSION    pMsgQueue->TimerMask = 0xFF;#else    pMsgQueue->TimerMask = 0xFFFF;#endif    for (i = 0; i < DEF_NR_TIMERS; i++) {        pMsgQueue->TimerOwner [i] = HWND_DESKTOP;        pMsgQueue->TimerID [i] = 0;    }    return pMsgQueue->msg != NULL;}void DestroyMsgQueue (PMSGQUEUE pMsgQueue){    PQMSG head;    PQMSG next;    head = next = pMsgQueue->pFirstNotifyMsg;    while (head) {        next = head->next;        FreeQMSG (head);        head = next;    }#ifndef _LITE_VERSION    pthread_mutex_destroy (&pMsgQueue->lock);    sem_destroy (&pMsgQueue->wait);#endif    free (pMsgQueue->msg);    pMsgQueue->msg = NULL;}#ifdef _LITE_VERSIONBOOL InitDskMsgQueue (void){    return InitMsgQueue (&__mg_dsk_msgs, 0);}void DestroyDskMsgQueue (void){    DestroyMsgQueue (&__mg_dsk_msgs);}#endifPMAINWIN CheckAndGetMainWindowPtr (HWND hWnd){    PMAINWIN pWin;    pWin = (PMAINWIN)hWnd;    if(pWin->DataType != TYPE_HWND)        return NULL;    if (pWin->WinType == TYPE_MAINWIN)        return pWin;    return NULL; }PMAINWIN GetMainWindowPtrOfControl (HWND hWnd){    PMAINWIN pWin;    if (hWnd == HWND_DESKTOP || hWnd == HWND_INVALID)        return NULL;    pWin = (PMAINWIN)hWnd;    if(pWin->DataType != TYPE_HWND)        return NULL;    if (pWin->WinType == TYPE_MAINWIN)        return pWin;    return ((PCONTROL)hWnd)->pMainWin;}PMSGQUEUE GetMsgQueue (HWND hWnd){    if (hWnd == HWND_DESKTOP) return &__mg_dsk_msgs;    return GetMainWindowPtrOfControl (hWnd)->pMessages;}static inline WNDPROC GetWndProc (HWND hWnd){     PMAINWIN  pMainWin = (PMAINWIN)hWnd;     if (hWnd == HWND_DESKTOP)         return DesktopWinProc;     return pMainWin->MainWindowProc;}static HWND msgCheckInvalidRegion (PMAINWIN pWin){    PCONTROL pCtrl = (PCONTROL)pWin;    HWND hwnd;    if (pCtrl->InvRgn.rgn.head)        return (HWND)pCtrl;    pCtrl = pCtrl->children;    while (pCtrl) {        if ((hwnd = msgCheckInvalidRegion ((PMAINWIN) pCtrl)))            return hwnd;        pCtrl = pCtrl->next;    }    return 0;}static PMAINWIN msgGetHostingRoot (PMAINWIN pHosted){    PMAINWIN pHosting;        pHosting = pHosted->pHosting;    if (pHosting)        return msgGetHostingRoot (pHosting);    return pHosted;}static HWND msgCheckHostedTree (PMAINWIN pHosting){    HWND hNeedPaint;    PMAINWIN pHosted;    if ( (hNeedPaint = msgCheckInvalidRegion (pHosting)) )        return hNeedPaint;    pHosted = pHosting->pFirstHosted;    while (pHosted) {        if ( (hNeedPaint = msgCheckHostedTree (pHosted)) )            return hNeedPaint;        pHosted = pHosted->pNextHosted;    }    return 0;}static void CheckCapturedMouseMessage (PMSG pMsg){    if (pMsg->message >= MSG_FIRSTMOUSEMSG             && pMsg->message <= MSG_LASTMOUSEMSG) {#ifndef _LITE_VERSION        if (__mg_capture_wnd && (__mg_capture_wnd != HWND_INVALID)                && (GetMsgQueue (__mg_capture_wnd) == GetMsgQueue (pMsg->hwnd))) {#else        if (__mg_capture_wnd && (__mg_capture_wnd != HWND_INVALID)                 && pMsg->hwnd != HWND_DESKTOP) {#endif            if (!(pMsg->wParam | KS_CAPTURED)) {                int x, y;                x = LOSWORD (pMsg->lParam);                y = HISWORD (pMsg->lParam);                ClientToScreen (pMsg->hwnd, &x, &y);                pMsg->lParam = MAKELONG (x, y);                pMsg->wParam |= KS_CAPTURED;            }            pMsg->hwnd = __mg_capture_wnd;        }    }}BOOL GUIAPI HavePendingMessage (HWND hWnd){    PMSGQUEUE pMsgQueue;    if( !(pMsgQueue = GetMsgQueue(hWnd)) ) return FALSE;        if (pMsgQueue->dwState & QS_NOTIFYMSG) {        if (pMsgQueue->pFirstNotifyMsg)            return TRUE;    }#ifndef _LITE_VERSION    if (pMsgQueue->dwState & QS_SYNCMSG) {        if (pMsgQueue->pFirstSyncMsg)            return TRUE;    }#endif    if (pMsgQueue->dwState & QS_POSTMSG) {        if (pMsgQueue->readpos != pMsgQueue->writepos)            return TRUE;    }#ifndef _LITE_VERSION    if (pMsgQueue->dwState & (QS_QUIT | QS_PAINT | QS_TIMER))#else    if (pMsgQueue->dwState & (QS_QUIT | QS_PAINT | QS_TIMER | QS_DESKTIMER))#endif        return TRUE;#ifdef _LITE_VERSION    return pMsgQueue->OnIdle (NULL);#else    return FALSE;#endif}int GUIAPI BroadcastMessage (int iMsg, WPARAM wParam, LPARAM lParam){    MSG msg;        msg.message = iMsg;    msg.wParam = wParam;    msg.lParam = lParam;    return SendMessage (HWND_DESKTOP, MSG_BROADCASTMSG, 0, (LPARAM)(&msg));}#ifdef _MSG_STRING#include "msgstr.h"const char* GUIAPI Message2Str (int message){    if (message >= 0x0000 && message <= 0x006F)        return msgstr1 [message];    else if (message >= 0x00A0 && message <= 0x010F)        return msgstr2 [message - 0x00A0];    else if (message >= 0x0120 && message <= 0x017F)        return msgstr3 [message - 0x0120];    else if (message >= 0xF000)        return "Control Messages";    else        return "MSG_USER";}void GUIAPI PrintMessage (FILE* fp, HWND hWnd, int iMsg, WPARAM wParam, LPARAM lParam){    fprintf (fp, "Message %s: hWnd: %#x, wP: %x, lP: %lx.\n",        Message2Str (iMsg), hWnd, wParam, lParam);}#endif#ifdef _LITE_VERSIONint GUIAPI GetMessage (PMSG pMsg, HWND hWnd){    PMSGQUEUE pMsgQueue;    PQMSG phead;    int slot;    if( !(pMsgQueue = GetMsgQueue(hWnd)) ) return ERR_INV_HWND;    memset (pMsg, 0, sizeof(MSG));checkagain:    if (pMsgQueue->dwState & QS_QUIT) {        pMsg->hwnd = hWnd;        pMsg->message = MSG_QUIT;        pMsg->wParam = 0;        pMsg->lParam = 0;        pMsgQueue->dwState &= ~QS_QUIT;                return 0;    }    if (pMsgQueue->dwState & QS_NOTIFYMSG) {               if (pMsgQueue->pFirstNotifyMsg) {            phead = pMsgQueue->pFirstNotifyMsg;            pMsgQueue->pFirstNotifyMsg = phead->next;                        *pMsg = phead->Msg;            FreeQMSG (phead);            return 1;        }        else            pMsgQueue->dwState &= ~QS_NOTIFYMSG;            }    if (pMsgQueue->dwState & QS_POSTMSG) {            if (pMsgQueue->readpos != pMsgQueue->writepos) {            *pMsg = pMsgQueue->msg[pMsgQueue->readpos];            CheckCapturedMouseMessage (pMsg);            pMsgQueue->readpos++;            if (pMsgQueue->readpos >= pMsgQueue->len) pMsgQueue->readpos = 0;            return 1;        }        else            pMsgQueue->dwState &= ~QS_POSTMSG;    }    if (pMsgQueue->dwState & QS_PAINT) {        PMAINWIN pHostingRoot;        HWND hNeedPaint;        PMAINWIN pWin;                if (hWnd == HWND_DESKTOP) {            pMsg->hwnd = hWnd;            pMsg->message = MSG_PAINT;            pMsg->wParam = 0;            pMsg->lParam = 0;            pMsgQueue->dwState &= ~QS_PAINT;            return 1;        }        pMsg->message = MSG_PAINT;        pMsg->wParam = 0;        pMsg->lParam = 0;        pWin = GetMainWindowPtrOfControl (hWnd);        pHostingRoot = msgGetHostingRoot (pWin);        if ( (hNeedPaint = msgCheckHostedTree (pHostingRoot)) ) {