📄 ebedit.c
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// $Id: ebedit.c,v 1.3 2005/07/26 02:28:32 tangjb Exp $
//
// edit.c: the Single Line Edit Control module.
//
// Copyright (C) 1999, 2000, 2001, 2002 Wei Yongming.
//
// Current maintainer: Wei Yongming.
//
/*
** 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
//
//
// TODO:
// * Selection.
// * Undo.
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <minigui/common.h>
#include <minigui/minigui.h>
#include <minigui/gdi.h>
#include <minigui/window.h>
#include <minigui/control.h>
#include "ebedit.h"
#include "ctrlmisc.h"
#include "ebcontrol.h"
static int EBEditCtrlProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam);
BOOL RegisterEBEditControl (void)
{
// This control class has two names: "edit" and "sledit"
WNDCLASS WndClass;
WndClass.spClassName = CTRL_EBEDIT;
WndClass.dwStyle = WS_NONE;
WndClass.dwExStyle = WS_EX_NONE;
WndClass.hCursor = GetSystemCursor (IDC_IBEAM);
WndClass.iBkColor = PIXEL_lightwhite;
WndClass.WinProc = EBEditCtrlProc;
return RegisterWindowClass (&WndClass);
}
void EBEditControlCleanup (void)
{
UnregisterWindowClass (CTRL_EBEDIT);
return;
}
static inline int edtGetOutWidth (HWND hWnd,PEBEDITDATA2 pEBEditData)
{
RECT rect;
GetClientRect(hWnd,&rect);
return rect.right-rect.left-pEBEditData->leftMargin-pEBEditData->rightMargin;
}
static int edtGetStartDispPosAtEnd (HWND hWnd,
PEBEDITDATA2 pEBEditData)
{
int nOutWidth = edtGetOutWidth (hWnd,pEBEditData);
int endPos = pEBEditData->dataEnd;
int newStartPos = pEBEditData->startPos;
const char* buffer = pEBEditData->buffer;
/*int fontsize = GetSysCharWidth();
PLOGFONT pfont = GetWindowFont(hWnd);
if(pfont)
fontsize = GetFontCharWidth(pfont);
*/
while (TRUE) {
if(New_GetStrDispWidth(hWnd,&buffer[newStartPos],endPos-newStartPos) < nOutWidth)
break;
//if ((endPos - newStartPos) * fontsize < nOutWidth)
// break;
if ((BYTE)buffer [newStartPos] > 0xA0) {
newStartPos ++;
if (newStartPos < pEBEditData->dataEnd) {
if ((BYTE)buffer [newStartPos] > 0xA0)
newStartPos ++;
}
}
else
newStartPos ++;
}
return newStartPos;
}
static int edtGetOffset (HWND hWnd,const PEBEDITDATA2 pEBEditData, int x)
{
#if 0
int i,cx = 0;
int len_first_char = 0;
const char* buffer = pEBEditData->buffer;
PLOGFONT pfont = GetWindowFont(hWnd);
for (i = pEBEditData->startPos; i < pEBEditData->dataEnd; )
{
len_first_char = my_get_First_extent(pfont,(char*)&buffer[i],
pEBEditData->dataEnd-i,&cx);
if(!len_first_char)
i++;
else
i += len_first_char;
if(cx > x)
return i-len_first_char;
else if(cx == x)
return i;
}
return i;
#else
int i;
int newOff = 0;
int nTextWidth = 0;
const char* buffer = pEBEditData->buffer;
int fontsize = GetSysCCharWidth();
PLOGFONT pfont = GetWindowFont(hWnd);
if(pfont)
fontsize = GetFontCCharWidth(pfont);
x -= pEBEditData->leftMargin;
for (i = pEBEditData->startPos; i < pEBEditData->dataEnd; i++) {
if ((nTextWidth + (fontsize >> 1)) >= x)
break;
if ((BYTE)buffer [i] > 0xA0) {
i++;
if (i < pEBEditData->dataEnd) {
if ((BYTE)buffer [i] > 0xA0) {
nTextWidth += fontsize;
newOff += 2;
}
else
i --;
}
else {
nTextWidth += GetFontSingleCharWidth(pfont,(char*)&buffer[i],1);
newOff ++;
}
}
else {
nTextWidth += GetFontSingleCharWidth(pfont,(char*)&buffer[i],1);
newOff ++;
}
}
return newOff;
#endif
}
static int edtGetDispLen (HWND hWnd)
{
#if 0
PEBEDITDATA2 pEBEditData = (PEBEDITDATA2)GetWindowAdditionalData2 (hWnd);
int nOutWidth = edtGetOutWidth (hWnd,pEBEditData);
return edtGetOffset (hWnd,pEBEditData, nOutWidth);
#else
int i, n = 0;
int nTextWidth = 0;
PEBEDITDATA2 pEBEditData = (PEBEDITDATA2)GetWindowAdditionalData2 (hWnd);
int nOutWidth = edtGetOutWidth (hWnd,pEBEditData);
const char* buffer = pEBEditData->buffer;
int fontsize = GetSysCCharWidth();
PLOGFONT pfont = GetWindowFont(hWnd);
if(pfont)
fontsize = GetFontCCharWidth(pfont);
for (i = pEBEditData->startPos; i < pEBEditData->dataEnd; i++)
{
if ((BYTE)buffer [i] > 0xA0)
{
i++;
if (i < pEBEditData->dataEnd)
{
if ((BYTE)buffer [i] > 0xA0)
{
nTextWidth += fontsize;
n += 2;
}
else
i--;
}
else
{
nTextWidth += GetFontSingleCharWidth(pfont,(char*)&buffer[i],1);
n++;
}
}
else
{
nTextWidth += GetFontSingleCharWidth(pfont,(char*)&buffer[i],1);
n++;
}
if (nTextWidth > nOutWidth)
break;
}
return n;
#endif
}
static BOOL edtIsACCharBeforePosition (const char* string, int pos)
{
if (pos < 2)
return FALSE;
if ((BYTE)string [pos - 2] > 0xA0 && (BYTE)string [pos - 1] > 0xA0)
return TRUE;
return FALSE;
}
static BOOL edtIsACCharAtPosition (const char* string, int len, int pos)
{
if (pos > (len - 2))
return FALSE;
if ((BYTE)string [pos] > 0xA0 && (BYTE)string [pos + 1] > 0xA0)
return TRUE;
return FALSE;
}
static void edtOnEraseBackground (HWND hWnd, DWORD dwStyle, HDC hdc, const RECT* pClipRect)
{
RECT rcTemp;
BOOL fGetDC = FALSE;
PEBEDITDATA2 pEBEditData = (PEBEDITDATA2) GetWindowAdditionalData2(hWnd);
if (hdc == 0)
{
hdc = BeginPaint(hWnd);//GetClientDC (hWnd)
fGetDC = TRUE;
}
if(dwStyle & EES_BKIMAGEMASK)
{
BITMAP bmp;
memset(&bmp,0,sizeof(BITMAP));
if(pEBEditData && pEBEditData->data)
{
if (pClipRect)
ClipRectIntersect (hdc, pClipRect);
switch(dwStyle & EES_BKIMAGEMASK)
{
case EES_BKBITMAP:
FillBoxWithBitmap(hdc, 0, 0, 0, 0,(PBITMAP)(pEBEditData->data));
break;
case EES_BKBMPFILE:
{
char * szimage = (char *)(pEBEditData->data);
if(!LoadBitmap( HDC_SCREEN, &bmp, szimage))
{
if(dwStyle &EES_BKALPHA)
{
unsigned char r,g,b,a;
Pixel2RGBA(HDC_SCREEN,GetWindowBkColor (hWnd),&r,&g,&b,&a);
bmp.bmType |= BMP_TYPE_ALPHACHANNEL;
bmp.bmAlpha = a;
FillBoxWithBitmap(hdc, 0, 0, 0, 0,&bmp);
}
else
{
FillBoxWithBitmap(hdc, 0, 0, 0, 0,&bmp);
}
UnloadBitmap(&bmp);
}
}
break;
case EES_BKICON:
DrawIcon (hdc, 0, 0, 0, 0, (HICON)(pEBEditData->data));
break;
default:
break;
}
}
}
else
{
int fheight = GetSysCharHeight();
PLOGFONT pfont = GetWindowFont(hWnd);
if(pfont)
fheight = pfont->size;
GetClientRect (hWnd, &rcTemp);
if (pClipRect)
ClipRectIntersect (hdc, pClipRect);
if (dwStyle & WS_DISABLED)
SetBrushColor (hdc, PIXEL_lightgray);
else
{
SetBrushColor (hdc, GetWindowBkColor(hWnd));
SetBkColor (hdc, GetWindowBkColor(hWnd));
}
//edit by tjb 2004-4-4
//修改原因:背景需要透明时，应做相关处理
if (dwStyle & EES_BKTRANSPARENT)
{
// SetBrushColor(hdc, RGBA2Pixel(hdc, 1, 1, 1, 0));
SetBkMode(hdc, BM_TRANSPARENT);
FillBox (hdc, rcTemp.left, rcTemp.top, RECTW (rcTemp), RECTH (rcTemp));
}
else
FillBox (hdc, rcTemp.left, rcTemp.top, RECTW (rcTemp), RECTH (rcTemp));
if ((dwStyle & EES_STYLESMASK) == EES_BASELINE)
{
SetPenColor (hdc, pEBEditData->textcolor);
DrawHDotLine (hdc, pEBEditData->leftMargin,
pEBEditData->topMargin + fheight + 1,
RECTW (rcTemp) - pEBEditData->leftMargin - pEBEditData->rightMargin);
}
}
if ((dwStyle & EES_STYLESMASK) == EES_USEBORDER)
{
// gal_pixel oldcolor;
RECT rect;
GetClientRect(hWnd, &rect);
if (pEBEditData->bordercolor != PIXEL_invalid)
{
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