mfw_edt.c

是一个手机功能的模拟程序

        return(0xFF);            /* not an editor            */

    edit = ((MfwHdr *) e)->data;


    chPos = offset + edit->cp;
    if( (chPos < 0) || (chPos > strlen(edit->attr->text)) )
        return(0x00);
    else
        return(edit->attr->text[chPos]);
}
int isAWordChar( char chr)
{
    if( ((chr >='A') && (chr <='Z')) || 
        ((chr >='a') && (chr <='z')) )
        return(TRUE);
    else
        return(FALSE);
}

MfwRes edtSymbol (MfwHnd e, int c)
{
    MfwEdt *edit; 
    unsigned char firstChar; 
    U16 bs;    // buffer size
    char *tbString; 
    char tmpBuffer[256];
    unsigned int tmpLen;


    TRACE_EVENT("edtSymbol()");
    if( !e )
        return MfwResIllHnd;

    if( ((MfwHdr *)e)->type != MfwTypEdt )
        return MfwResIllHnd;            /* not an editor            */

    edit = ((MfwHdr *) e)->data;
    firstChar = (unsigned char)edit->attr->text[0];
    tbString = &(edit->attr->text[0]);

    if( (firstChar != 0x80) && (c <= 0xff) )  //All text in buffer is ascii or No symbol in buffer, and the input symbol c is ascii or control code;  control code is less than 0
        return edtChar (e, c);
    else if( (firstChar != 0x80) && (c > 0xff) ) //All text in buffer is ascii or No symbol in buffer, and the input symbol c is unicode
    {
        if( firstChar != 0 )  // there are symbol in buffer, and all is ascii
        {
            //把当前已输入的ascii字符全部转为unicode
            //Note:  如果当前的ascii码转为双字节后超出空间，此时应不作转换，返回异常值，mmi层应该出现提示信息
            strcpy(tmpBuffer, tbString);
            AscEx_To_Unicode(tmpBuffer, tbString); //AscEx_To_Unicode(tmpBuffer, strlen(tmpBuffer), tbString);  //首字符已置为0x80
            return edtCharUnicode (e, c);
        }
        else                    // firstChar is zero; for the first time, No symbol in buffer. 
        {
            edit->attr->text[0] = 0x80;  // Set the first Flag Byte to 0x80
            return edtCharUnicode (e, c);
        }
    }
    else if( (firstChar == 0x80) && (c > 0) && (c <= 0xff) ) //All text in buffer is unicode, and the input symbol c is ascii;  
    {
        if( ecDel_uniFlag )
        {
            ecDel_uniFlag = 0;
            //TRACE_EVENT("zgz,ecDel_uniFlag  is reset to 0");
            // 上一次调用过unicode的删除控制，应判断当前的字符串是否可以全部转为ascii
            //step1: 如果可以全部转为ascii，转换后，插入一个ascii字符； 
            //step2: 否则把ascii 码c转为unicode, 输入到buffer 中
            tmpLen = strlenUnicode((U16 *)( tbString + 1));
            if( All_Is_AscEx(tbString, tmpLen) )  //if (All_Is_AscEx(tbString, tmpLen))
            {
                memset(tmpBuffer, 0, sizeof(tmpBuffer));
                Unicode_To_AscEx(tbString, &tmpBuffer[0]); //Unicode_To_AscEx(tbString, tmpLen, &tmpBuffer[0]);
                strcpy(tbString, tmpBuffer);
                return edtChar(e, c);
            }
            else
            {
                return edtCharUnicode(e, ConvertToUni(c));
            }
        }
        else    //把ascii 码c转为unicode, 输入到buffer 中
        {
            return edtCharUnicode(e, ConvertToUni(c));
        }
    }
    else if( (firstChar == 0x80) && ((c < 0) || (c > 0xff)) ) //All text in buffer is unicode, and the input symbol c is also unicode or control code
    {
        if( (c == ecBack) || (c == ecDel) )
        {
            ecDel_uniFlag = 1;

            //note: 判断当前还可以输入的字符数；是否可以全部转为ascii, 计算出txtLen 的值
            // 这一步计算可以放到一个合适的地方统一执行，然后供显示给用户
        }
        return edtCharUnicode (e, c);
    }

    return MfwResOk;
}

MfwRes edtChar (MfwHnd e, int c)
{
    int warn99;
    MfwEdt *edit; 
    U16 bs; 
    int dy; //Change in cursor y position when moving up/down lines.
    char *tbString; 
    int found;
    U16 pre_offs;
    char Trace_data[10]="";

    TRACE_EVENT("edtChar()");

    if( !e )
        return MfwResIllHnd;

    if( ((MfwHdr *)e)->type != MfwTypEdt )
        return MfwResIllHnd;            /* not an editor            */

    edit = ((MfwHdr *) e)->data;

    tbString = &edit->attr->text[0];

    if( (unsigned char)tbString[0] == 0x80 )  //zgz change, 2002.9.6
    {
        return(edtCharUnicode(e,c));
    }
    if( wstrlen(edit->attr->text)==0 )
        edit->cp=0;
    curCP = edit->cp;
    if( edit->attr->e_size==0 )
        bs = edit->attr->size;
    else
        bs=edit->attr->e_size;
    curMode = edit->attr->mode;
    dy = 0;
    switch( c )
    {
    
    case ecEscape:                  //* quit editor              
        return MfwResDone;
    case ecLeft:                    //* cursor left     
        if( edit->cp == 0 )
            edit->cp = strlen(tbString);  // zgz, change it
        else
        {
            edit->cp = edit->cp-1;
        }
        pre_offs=edit->curOffs;
        updateWindow( edit, 0);
        if( edit->curOffs==pre_offs )
            redrawcursor(preCX,preCY, preCSize,curCX,curCY,curCSize,0,edit->attr->fgColor);
        else
        {
            display=1;
            edtUpdate(edit,1);
        }
        break;
    case ecRight:                   //* cursor right 
        edit->cp = edit->cp+1;


        if( edit->cp > (strlen(tbString)) )
        {
            edit->cp = 0;
        }
        pre_offs=edit->curOffs;
        updateWindow( edit, 0);

        if( edit->curOffs==pre_offs )
            redrawcursor(preCX,preCY, preCSize,curCX,curCY,curCSize,0,edit->attr->fgColor);
        else
        {
            display=1;
            edtUpdate(edit,1);
        }
        //	redrawcursor(cp_pre_x, cp_pre_y, cp_pre_w,edit->cp_curr_x,edit->cp_curr_y, edit->cp_curr_width,0,edit->attr->fgColor);
        break;
    case ecUp:                      //* cursor up      
        dy =  -1;
        pre_offs=edit->curOffs;
        TRACE_EVENT("press the up in ascii");
        updateWindow( edit, dy);

        if( edit->curOffs==pre_offs )
            redrawcursor(preCX,preCY, preCSize,curCX,curCY,curCSize,0,edit->attr->fgColor);
        else
        {
            display=1;
            edtUpdate(edit,1);
        }

        break;
    case ecDown:                    //* cursor down           
        dy = 1;
        pre_offs=edit->curOffs;
        TRACE_EVENT("press the down in ascii");

        updateWindow( edit, dy);
        Sprintf(Trace_data,"%d",edit->cp);
        TRACE_EVENT(Trace_data);
        if( edit->curOffs==pre_offs )
            redrawcursor(preCX,preCY, preCSize,curCX,curCY,curCSize,0,edit->attr->fgColor);
        else
        {
            display=1;
            edtUpdate(edit,1);
        }
        break;
    case ecTop:                     //* cursor to start of text  
        edit->cp = 0;
        updateWindow(edit,0);
        display=1;
        edtUpdate(edit,1);
        break;
    case ecBottom:                  //* cursor to end of text   
        edit->cp = strlen(tbString);
        updateWindow(edit,0);
        display=1;
        edtUpdate(edit,1);
        break;
    case ecBack:                    //* backspace                *
        if( (edit->cp != 0) && (strlen(tbString)+1 > edit->cp) )
        {
            moveLeft(&tbString[edit->cp-1],1);
            //				edit->cp = edit->cp-1;
        }
        pre_offs=edit->curOffs;
        if( edit->cp == 0 )
            edit->cp = strlen(tbString);  // zgz, change it
        else
        {
            edit->cp = edit->cp-1;
        }
        updateWindow( edit, dy);
        display=1;
        if( pre_offs==edit->curOffs )
            edtUpdate(edit,0);
        else
            edtUpdate(edit,1);

        break;
    case ecDel:                     //* delete                   *
        if( strlen(tbString) > edit->cp )
        {
            moveLeft(&tbString[edit->cp],1);
        }
        break;
    case ecEnter:                   //* cr/lf                    
        c = UNICODE_LINEFEED;
        edtInsert(c,tbString,bs);
        return(edtChar(e,ecRight));
        break;
    default:                        //* normal char     
        if( edtInsert(c,tbString,bs) )   //zgz,2002.5.15 ,if the buffer is full, don't make the cursor right
        {
            updateWindow( edit, 0);
            display=1;
            edtUpdate(edit,0);
            return(edtChar(e,ecRight));
        }
        else
            return MfwResDone;
        break;
    }
    return MfwResOk;
}


/////zgz,2002.0621 this function update the screen by disp. if disp is 1, update the screen . or not do it, just intert c to editor.
MfwRes edtCharf (MfwHnd e, int c, int disp)
{
    int warn99;
    MfwEdt *edit; 
    U16 bs; 
    int dy; //Change in cursor y position when moving up/down lines.
    char *tbString; 
    int found;

    if( !e )
        return MfwResIllHnd;

    if( ((MfwHdr *)e)->type != MfwTypEdt )
        return MfwResIllHnd;            /* not an editor            */

    edit = ((MfwHdr *) e)->data;
    curCP = edit->cp;
    tbString = &edit->attr->text[0];

    if( (unsigned char)tbString[0] == 0x80 )  //zgz change, 2002.9.6
    {
        return(edtCharUnicode(e,c));
    }
    if( edit->attr->e_size==0 )
        bs = edit->attr->size;
    else