/* * Copyright (C) 1999, 2000, Wei Yongming. * Portions Copyright (c) 2000 Greg Haerr <greg@censoft.com> * * Edit control for Microwindows win32 api. *//***  This library is free software; you can redistribute it and/or**  modify it under the terms of the GNU Library General Public**  License as published by the Free Software Foundation; either**  version 2 of the License, or (at your option) any later version.****  This library 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**  Library General Public License for more details.****  You should have received a copy of the GNU Library General Public**  License along with this library; if not, write to the Free**  Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,**  MA 02111-1307, USA*//***  Alternatively, the contents of this file may be used under the terms **  of the Mozilla Public License (the "MPL License") in which case the**  provisions of the MPL License are applicable instead of those above.*//* Note:**  Although there was a version by Zhao Jianghua, this version of**  EDIT control is written by Wei Yongming from scratch.**** Create date: 1999/8/26**** Modify records:****  Who             When        Where       For What                Status**-----------------------------------------------------------------------------**  WEI Yongming    2000/02/24  Tsinghua    Add MPL License         Finished**  Kevin Tseng     2000/05/30  gv          port to microwin        ported**  Greg Haerr      2000/06/16  Utah        3d look, bug fixes      Finished**  Kevin Tseng     2000/06/22  gv          port to mw-nanox        ported**** TODO:**    * Selection.**    * Undo.*/#include <stdio.h>#include <stdlib.h>#include <string.h>#define MWINCLUDECOLORS#include "windows.h"	/* windef.h, winuser.h */#include "wintools.h"#include "device.h" 	/* GdGetTextSize */#if HAVE_HZK_SUPPORT || HAVE_BIG5_SUPPORT#define USE_BIG5#define DEFAULT_FONT	SYSTEM_FIXED_FONT#else#define DEFAULT_FONT	DEFAULT_GUI_FONT#endif#define WIDTH_EDIT_BORDER       2#define MARGIN_EDIT_LEFT        1#define MARGIN_EDIT_TOP         1#define MARGIN_EDIT_RIGHT       2#define MARGIN_EDIT_BOTTOM      1#define LEN_SLEDIT_BUFFER       3000#define LEN_SLEDIT_UNDOBUFFER   1024#define EST_FOCUSED     0x00000001L#define EST_MODIFY      0x00000002L#define EST_READONLY    0x00000004L#define EST_REPLACE     0x00000008L#define EDIT_OP_NONE    0x00#define EDIT_OP_DELETE  0x01#define EDIT_OP_INSERT  0x02#define EDIT_OP_REPLACE 0x03typedef struct tagSLEDITDATA {    HFONT   hFont;          /* hFont used */    int     bufferLen;      /* length of buffer */    int     dataEnd;        /* data end position */    int     editPos;        /* current edit position */    int     caretOff;       /* caret offset in box */    int     startPos;       /* start display position */        int     selStart;       /* selection start position */    int     selEnd;         /* selection end position */        int     passwdChar;     /* password character */        int     leftMargin;     /* left margin */    int     topMargin;      /* top margin */    int     rightMargin;    /* right margin */    int     bottomMargin;   /* bottom margin */        int     hardLimit;      /* hard limit */    int     lastOp;         /* last operation */    int     lastPos;        /* last operation position */    int     affectedLen;    /* affected len of last operation */    int     undoBufferLen;  /* undo buffer len */    char    undoBuffer [LEN_SLEDIT_UNDOBUFFER];	/* Undo buffer; */    char    buffer [LEN_SLEDIT_BUFFER];		/* buffer */} SLEDITDATA, *PSLEDITDATA;static LRESULT CALLBACKSLEditCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);static int GetSysCharHeight (HWND hwnd) {#ifndef USE_BIG5	    	HDC 		hdc;    	int xw, xh, xb;    	hdc = GetDC(hwnd);	SelectObject(hdc, GetStockObject(DEFAULT_FONT));	GdSetFont(hdc->font->pfont);    	GdGetTextSize(hdc->font->pfont,"X",1, &xw,&xh,&xb,MWTF_ASCII);    	ReleaseDC(hwnd,hdc);	return xh;#else	return 12;#endif}static int GetSysCharWidth (HWND hwnd) {#ifndef USE_BIG5	    	HDC 		hdc;    	int xw, xh, xb;    	hdc = GetDC(hwnd);	SelectObject(hdc, GetStockObject(DEFAULT_FONT));	GdSetFont(hdc->font->pfont);    	GdGetTextSize(hdc->font->pfont,"X",1, &xw,&xh,&xb,MWTF_ASCII);    	ReleaseDC(hwnd,hdc);	return xw;#else	return 6;#endif}static int GetSysCCharWidth (HWND hwnd){	return (2*GetSysCharWidth(hwnd));}int WINAPI MwRegisterEditControl(HINSTANCE hInstance){	WNDCLASS	wc;	wc.style	= CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | CS_GLOBALCLASS;	wc.lpfnWndProc	= (WNDPROC)SLEditCtrlProc;	wc.cbClsExtra	= 0;	wc.cbWndExtra	= 0;	wc.hInstance	= hInstance;	wc.hIcon	= NULL;	wc.hCursor	= 0; /*LoadCursor(NULL, IDC_ARROW);*/	wc.hbrBackground= GetStockObject(WHITE_BRUSH);	wc.lpszMenuName	= NULL;	wc.lpszClassName= "EDIT";	return RegisterClass(&wc);}static int edtGetOutWidth (const HWND pCtrl){    return pCtrl->clirect.right - pCtrl->clirect.left             - ((PSLEDITDATA)(pCtrl->userdata2))->leftMargin            - ((PSLEDITDATA)(pCtrl->userdata2))->rightMargin;}static int edtGetStartDispPosAtEnd (const HWND pCtrl, PSLEDITDATA pSLEditData){    int         nOutWidth = edtGetOutWidth (pCtrl);    int         endPos  = pSLEditData->dataEnd;    int         newStartPos = pSLEditData->startPos;    const char* buffer = pSLEditData->buffer;    while (TRUE) {        if ((endPos - newStartPos) * GetSysCharWidth (pCtrl) < nOutWidth)            break;        	/* FIXME: #ifdef GB2312?*/        if ((BYTE)buffer [newStartPos] > 0xA0)	/* 1st:gb:a1-f7,big5:a1-f9 */	{            newStartPos ++;            if (newStartPos < pSLEditData->dataEnd) 	    {#ifndef USE_BIG5                if ((BYTE)buffer [newStartPos] > 0xA0)#else	/* 2nd:gb:a1-fe,big5:40-7e,a1-fe */                if ( ((BYTE)buffer [newStartPos] >= 0x40 && (BYTE)buffer[newStartPos] <= 0x7e) ||                     ((BYTE)buffer [newStartPos] >= 0xa1 && (BYTE)buffer[newStartPos] <= 0xfe)) #endif                    newStartPos ++;            }        }        else            newStartPos ++;    }    return newStartPos;}static int edtGetDispLen (const HWND pCtrl){    int i, n = 0;    int nOutWidth = edtGetOutWidth (pCtrl);    int nTextWidth = 0;    PSLEDITDATA pSLEditData = (PSLEDITDATA)(pCtrl->userdata2);    const char* buffer = pSLEditData->buffer;    for (i = pSLEditData->startPos; i < pSLEditData->dataEnd; i++) {	/* FIXME #ifdef GB2312?*/        if ((BYTE)buffer [i] > 0xA0)	/* st:gb:a1-f7,big5:a1-f9 */	{            i++;            if (i < pSLEditData->dataEnd) 	    {#ifndef USE_BIG5                if ((BYTE)buffer [i] > 0xA0)	/* 2nd:gb:a1-fe,big5:40-7e,a1-fe */#else	/* 2nd:gb:a1-fe,big5:40-7e,a1-fe */                if ( ((BYTE)buffer [i] >= 0x40 && (BYTE)buffer[i] <= 0x7e) ||                     ((BYTE)buffer [i] >= 0xa1 && (BYTE)buffer[i] <= 0xfe))#endif		{                    nTextWidth += GetSysCCharWidth (pCtrl);                    n += 2;                }                else                    i--;            }            else             {                nTextWidth += GetSysCharWidth (pCtrl);                n++;            }        }        else         {            nTextWidth += GetSysCharWidth (pCtrl);            n++;        }        if (nTextWidth > nOutWidth)            break;    }    return n;}static int edtGetOffset (HWND hwnd,const SLEDITDATA* pSLEditData, int x){    int i;    int newOff = 0;    int nTextWidth = 0;    const char* buffer = pSLEditData->buffer;    x -= pSLEditData->leftMargin;    for (i = pSLEditData->startPos; i < pSLEditData->dataEnd; i++) {        if ((nTextWidth + (GetSysCharWidth(hwnd) >> 1)) >= x)            break;	/* FIXME #ifdef GB2312?*/        if ((BYTE)buffer [i] > 0xA0)	/* 1st:gb:a1-f7,big5:a1-f9 */	{            i++;            if (i < pSLEditData->dataEnd) 	    {#ifndef USE_BIG5                if ((BYTE)buffer [i] > 0xA0)	/* 2nd:gb:a1-fe,big5:40-7e,a1-fe */#else	/* 2nd:gb:a1-fe,big5:40-7e,a1-fe */                if ( ((BYTE)buffer [i] >= 0x40 && (BYTE)buffer[i] <= 0x7e) ||                      ((BYTE)buffer [i] >= 0xa1 && (BYTE)buffer[i] <= 0xfe))#endif		{                    nTextWidth += GetSysCCharWidth (hwnd);                    newOff += 2;                }                else                    i --;            }            else             {                nTextWidth += GetSysCharWidth (hwnd);                newOff ++;            }        }        else         {            nTextWidth += GetSysCharWidth (hwnd);            newOff ++;        }    }    return newOff;}static BOOL edtIsACCharBeforePosition (const char* string, int pos){    if (pos < 2)        return FALSE;/* 1st:gb:a1-f7,big5:a1-f9  2nd:gb:a1-fe,big5:40-7e,a1-fe */#ifndef USE_BIG5    /* FIXME #ifdef GB2312?*/    if ((BYTE)string [pos - 2] > 0xA0 && (BYTE)string [pos - 1] > 0xA0)        return TRUE;#else    if ((BYTE)string [pos - 2] > 0xA0)    {	if ( ((BYTE)string [pos - 1] >= 0x40 && (BYTE)string[pos - 1] <= 0x7e) ||	     ((BYTE)string [pos - 1] >= 0xa1 && (BYTE)string[pos - 1] <= 0xfe))            return TRUE;    }#endif    return FALSE;}static BOOL edtIsACCharAtPosition (const char* string, int len, int pos){    if (pos > (len - 2))        return FALSE;/* 1st:gb:a1-f7,big5:a1-f9  2nd:gb:a1-fe,big5:40-7e,a1-fe */#ifndef USE_BIG5    if ((BYTE)string [pos] > 0xA0 && (BYTE)string [pos + 1] > 0xA0)        return TRUE;#else    if ((BYTE)string [pos] > 0xA0)    {	if ( ((BYTE)string [pos + 1] >= 0x40 && (BYTE)string [pos + 1] <= 0x7e) ||	     ((BYTE)string [pos + 1] >= 0xa1 && (BYTE)string [pos + 1] <= 0xfe)) {	    /*fprintf(stderr,"true\n");	    fflush(stderr);*/	    return TRUE;	}    }#endif    return FALSE;}LRESULT CALLBACKSLEditCtrlProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){       HWND	pCtrl;    DWORD       dwStyle;    HDC         hdc;    PSLEDITDATA pSLEditData;    RECT	rc;    pCtrl       = hWnd;    dwStyle     = pCtrl->style;    switch (message)    {        case WM_CREATE:            if (!(pSLEditData = malloc (sizeof (SLEDITDATA)))) {                fprintf (stderr, "EDIT: malloc error!\n");                return -1;            }            pSLEditData->hFont      	= GetStockObject(DEFAULT_FONT);            pSLEditData->bufferLen      = LEN_SLEDIT_BUFFER;            pSLEditData->editPos        = 0;            pSLEditData->caretOff       = 0;            pSLEditData->startPos       = 0;                        pSLEditData->selStart       = 0;            pSLEditData->selEnd         = 0;            pSLEditData->passwdChar     = '*';            pSLEditData->leftMargin     = MARGIN_EDIT_LEFT;            pSLEditData->topMargin      = MARGIN_EDIT_TOP;            pSLEditData->rightMargin    = MARGIN_EDIT_RIGHT;            pSLEditData->bottomMargin   = MARGIN_EDIT_BOTTOM;