medit.c

miniucgui1.30版本的源码

                    }
                    else
                    {    
                        if (pMLEditData->veditPos == pMLEditData->vdispPos){
                            pMLEditData->veditPos--;
                            if (edtGetNewvPos (hWnd,
                                                GetLineData(pMLEditData,pMLEditData->editLine),
                                                pMLEditData->dx_chars[pMLEditData->veditPos] 
                                                - edtGetOutWidth (hWnd)/4) == -1)
                                pMLEditData->vdispPos = 0;
                            else {
                                pMLEditData->vdispPos = edtGetNewvPos (hWnd,
                                                GetLineData(pMLEditData,pMLEditData->editLine),
                                                pMLEditData->dx_chars[pMLEditData->veditPos] 
                                                - edtGetOutWidth (hWnd)/4);
                            }
                            bScroll = TRUE;
                        }else {
                            pMLEditData->veditPos--;
                        }
                            
                    }    
                    pMLEditData->dispPos = pMLEditData->dx_chars[pMLEditData->vdispPos];
                    edtSetCaretPos (hWnd);
                    if (bScroll)
                        InvalidateRect (hWnd, NULL, TRUE);
                    edtSetScrollInfo (hWnd, pMLEditData, TRUE);
                    if (pMLEditData->bSCROLL)
                        InvalidateRect (hWnd, NULL, TRUE);
                }
                return 0;
                
                case SCANCODE_CURSORBLOCKRIGHT:
                {
                    BOOL         bScroll = FALSE;
                    int          line, wrapline;
                    PLINEDATA     temp;

                    if (dwStyle & ES_AUTOWRAP)
                    {
                        edtGetLineNums (pMLEditData, pMLEditData->editLine, &line, &wrapline);
                        pLineData = GetLineData(pMLEditData, line);
                    }
                    else
                        pLineData = GetLineData(pMLEditData,pMLEditData->editLine);

                    if (dwStyle & ES_AUTOWRAP)
                    {
                        if (!(temp = pLineData->next) 
                                    && pMLEditData->veditPos == pMLEditData->fit_chars) return 0;
                        edtGetLineInfo (hWnd, pLineData);
                        if (pMLEditData->veditPos == pMLEditData->fit_chars)
                        {
                            if (pMLEditData->editLine == pMLEditData->EndlineDisp) {
                                bScroll = TRUE;
                                pMLEditData->StartlineDisp++;
                                pMLEditData->EndlineDisp++;
                            }
                            edtGetLineInfo (hWnd, temp);
                            pMLEditData->editLine++;
                            pMLEditData->veditPos = 0;
                        }else if (pMLEditData->veditPos == pLineData->wrapStartPos[wrapline+1]-1)
                        {
                            if (pMLEditData->veditPos < 
                                            pLineData->wrapStartPos[pLineData->nwrapline]-1)
                            {
                                if (pMLEditData->editLine == pMLEditData->EndlineDisp) {
                                    bScroll = TRUE;
                                    pMLEditData->StartlineDisp++;
                                    pMLEditData->EndlineDisp++;
                                }
                                pMLEditData->editLine++;
                            }
                            pMLEditData->veditPos++;
                        }
                        else
                            pMLEditData->veditPos++;

                        pMLEditData->linesDisp = pMLEditData->EndlineDisp 
                                                - pMLEditData->StartlineDisp + 1;

                        edtSetCaretPos (hWnd);
                        if (bScroll)
                        {
                            InvalidateRect(hWnd,NULL,TRUE);    
                            edtSetScrollInfo (hWnd, pMLEditData, TRUE);
                        }
                        if (pMLEditData->bSCROLL)
                            InvalidateRect (hWnd, NULL, TRUE);
                        return 0;
                    }
                            
                    if (pMLEditData->veditPos == pMLEditData->fit_chars) 
                    {
                        temp = pLineData->next;
                        if (temp && pMLEditData->editLine == pMLEditData->EndlineDisp) {
                            bScroll = TRUE;
                            pMLEditData->StartlineDisp++;
                            pMLEditData->EndlineDisp++;
                        }
                        if(temp)
                        {
                            pMLEditData->editLine++;
                            edtGetLineInfo (hWnd, GetLineData (pMLEditData, pMLEditData->editLine));
                            pMLEditData->veditPos  = 0;
                            if(pMLEditData->vdispPos !=0)
                            {
                                pMLEditData->vdispPos  = 0;
                                bScroll = TRUE;
                            }
                        } else
                            return 0;
                    } else {    
                        // caret is at the end of the display rect
                        if ((pMLEditData->dx_chars[pMLEditData->veditPos] 
                                    - pMLEditData->dx_chars[pMLEditData->vdispPos] 
                                    < edtGetOutWidth (hWnd)) 
                                && (pMLEditData->dx_chars[pMLEditData->veditPos + 1] 
                                    - pMLEditData->dx_chars[pMLEditData->vdispPos] 
                                    > edtGetOutWidth (hWnd))) {
                            bScroll = TRUE;
                            pMLEditData->veditPos++;
                            if (edtGetNewvPos (hWnd,
                                                GetLineData(pMLEditData,pMLEditData->editLine),
                                                pMLEditData->dx_chars[pMLEditData->veditPos] 
                                                - edtGetOutWidth (hWnd)/4) == -1)
                                pMLEditData->vdispPos = 0;
                            else
                                pMLEditData->vdispPos = edtGetNewvPos (hWnd,
                                                GetLineData(pMLEditData,pMLEditData->editLine),
                                                pMLEditData->dx_chars[pMLEditData->veditPos] 
                                                - edtGetOutWidth (hWnd)/4);

                            if (pMLEditData->dx_chars[pMLEditData->vdispPos] 
                                        + edtGetOutWidth (hWnd) 
                                    > pMLEditData->sz.cx) 
                                pMLEditData->vdispPos = 
                                            edtGetStartDispPosAtEnd (hWnd, pLineData);
                        }else 
                            pMLEditData->veditPos++;
                    }
                    pMLEditData->dispPos = pMLEditData->dx_chars[pMLEditData->vdispPos];
                    edtSetCaretPos (hWnd);
                    if (bScroll)
                        InvalidateRect (hWnd, NULL, TRUE);
                        edtSetScrollInfo (hWnd, pMLEditData, TRUE);
                    if (pMLEditData->bSCROLL)
                        InvalidateRect (hWnd, NULL, TRUE);
                }
                return 0;
                   
                case SCANCODE_CURSORBLOCKUP:
                {
                    BOOL bScroll = FALSE;
                    int  newStartPos, olddispPos, oldeditPos, line, wrapline;
                    PLINEDATA temp;

                       edtPosProc (hWnd); 
                    olddispPos = pMLEditData->dx_chars[pMLEditData->vdispPos];
                    oldeditPos = pMLEditData->dx_chars[pMLEditData->veditPos];
                    if (dwStyle & ES_AUTOWRAP)
                    {
                        edtGetLineNums (pMLEditData, pMLEditData->editLine, &line, &wrapline);
                        pLineData = GetLineData(pMLEditData, line);
                    }
                    else
                        pLineData = GetLineData(pMLEditData,pMLEditData->editLine);

                    temp = pLineData->previous; 
                    if(pMLEditData->editLine == 0) return 0;
                    if (pMLEditData->editLine == pMLEditData->StartlineDisp)
                    {
                        bScroll = TRUE;
                        pMLEditData->StartlineDisp--;
                        if (dwStyle & ES_AUTOWRAP)
                            pMLEditData->EndlineDisp = MIN (pMLEditData->wraplines - 1,
                                                pMLEditData->StartlineDisp + 
                                                pMLEditData->MaxlinesDisp - 1);
                        else
                            pMLEditData->EndlineDisp--;    
                    }
                    pMLEditData->editLine--;

                    if (dwStyle & ES_AUTOWRAP)
                    {
                        oldeditPos = pMLEditData->dx_chars[pMLEditData->veditPos] 
                                        - pMLEditData->dx_chars[pLineData->wrapStartPos[wrapline]];
                        edtGetCaretValid (hWnd, pMLEditData->editLine,
                                                           olddispPos, oldeditPos);

                        pMLEditData->linesDisp = pMLEditData->EndlineDisp 
                                                - pMLEditData->StartlineDisp + 1;
                        edtSetCaretPos (hWnd);
                        if (bScroll)
                            InvalidateRect(hWnd,NULL,TRUE);    
                        edtSetScrollInfo (hWnd, pMLEditData, TRUE);
                        if (pMLEditData->bSCROLL)
                            InvalidateRect (hWnd, NULL, TRUE);
                        return 0;
                    }    
                    
                    edtGetLineInfo (hWnd, temp);

                    if( olddispPos > pMLEditData->sz.cx ) 
                    {
                        pMLEditData->veditPos = pMLEditData->fit_chars;
                           newStartPos = edtGetStartDispPosAtEnd (hWnd, temp);
                           pMLEditData->vdispPos =  newStartPos;
                        bScroll = TRUE;
                    }                
                    else 
                    {
                        pMLEditData->veditPos = edtGetNewvPos (hWnd, temp, oldeditPos);
                        if (pMLEditData->veditPos == -2)
                            pMLEditData->veditPos = pMLEditData->fit_chars;
                        pMLEditData->vdispPos = edtGetNewvPos (hWnd, temp, olddispPos);
                        if (olddispPos != pMLEditData->dx_chars[pMLEditData->vdispPos])
                            bScroll = TRUE;
                    }
                    
                    pMLEditData->dispPos = pMLEditData->dx_chars[pMLEditData->vdispPos];
                    SetCaretPos (hWnd, 
                        pMLEditData->dx_chars[pMLEditData->veditPos] 
                            - pMLEditData->dx_chars[pMLEditData->vdispPos] 
                            + pMLEditData->leftMargin, 
                        (pMLEditData->editLine - pMLEditData->StartlineDisp) * pMLEditData->lineHeight
                            + pMLEditData->topMargin);
                    if (bScroll)
                        InvalidateRect(hWnd,NULL,TRUE);    
                    edtSetScrollInfo (hWnd, pMLEditData, TRUE);
                    if (pMLEditData->bSCROLL)
                        InvalidateRect (hWnd, NULL, TRUE);
                }
                break;
                case SCANCODE_CURSORBLOCKDOWN:
                {
                    BOOL bScroll = FALSE;
                    int  newStartPos, olddispPos, oldeditPos, line, wrapline;
                    PLINEDATA temp;

                       edtPosProc (hWnd); 
                    oldeditPos = pMLEditData->dx_chars[pMLEditData->veditPos];
                    olddispPos = pMLEditData->dx_chars[pMLEditData->vdispPos];
                    if (dwStyle & ES_AUTOWRAP)
                    {
                        edtGetLineNums (pMLEditData, pMLEditData->editLine, &line, &wrapline);
                        pLineData = GetLineData(pMLEditData, line);
                    }
                    else
                        pLineData = GetLineData(pMLEditData,pMLEditData->editLine);

                    temp = pLineData->next; 
                    if (dwStyle & ES_AUTOWRAP) {
                        if(pMLEditData->editLine == pMLEditData->wraplines-1) return 0;
                    }else {
                        if(pMLEditData->editLine == pMLEditData->lines-1) return 0;
                    }
                    if (pMLEditData->editLine == pMLEditData->EndlineDisp)
                    {
                        bScroll = TRUE;
                        pMLEditData->StartlineDisp++;
                        pMLEditData->EndlineDisp++;    
                    }
                    pMLEditData->editLine++;

                    if (dwStyle & ES_AUTOWRAP)
                    {
                        oldeditPos = pMLEditData->dx_chars[pMLEditData->veditPos] 
                                        - pMLEditData->dx_chars[pLineData->wrapStartPos[wrapline]];
                        edtGetCaretValid (hWnd, pMLEditData->editLine,
                                                           olddispPos, oldeditPos);

                        edtSetCaretPos (hWnd);
                        if (bScroll)
                            InvalidateRect(hWnd,NULL,TRUE);    
                        edtSetScrollInfo (hWnd, pMLEditData, TRUE);
                        if (pMLEditData->bSCROLL)
                            InvalidateRect (hWnd, NULL, TRUE);
                        return 0;
                    }    

                    edtGetLineInfo (hWnd, temp);

                    if( olddispPos > pMLEditData->sz.cx ) 
                    {
                        pMLEditData->veditPos = pMLEditData->fit_chars;
                           newStartPos = edtGetStartDispPosAtEnd (hWnd, temp);
                           pMLEditData->vdispPos =  newStartPos;
                        bScroll = TRUE;
                    }                
                    else 
                    {
                        pMLEditData->veditPos = edtGetNewvPos (hWnd, temp, oldeditPos);
                        if (pMLEditData->veditPos == -2)
                            pMLEditData->veditPos = pMLEditData->fit_chars;
                        pMLEditData->vdispPos = edtGetNewvPos (hWnd, temp, olddispPos);
                        if (olddispPos != pMLEditData->dx_chars[pMLEditData->vdispPos])
                            bScroll = TRUE;
                    }
                    
                    pMLEditData->dispPos = pMLEditData->dx_chars[pMLEditData->vdispPos];
                    edtSetCaretPos (hWnd);
                    if (bScroll)
                        InvalidateRect(hWnd,NULL,TRUE);    
                    edtSetScrollInfo (hWnd, pMLEditData, TRUE);
                    if (pMLEditData->bSCROLL)
                        InvalidateRect (hWnd, NULL, TRUE);
                }
                break;
                case SCANCODE_INSERT:
                    pMLEditData->status ^= EST_REPLACE;
                break;

                case SCANCODE_REMOVE:
                {
                    PLINEDATA temp;
                    int leftLen;
                    int line, wrapline;
                    int oldnwrapline;
                    BOOL bScroll=FALSE;

                    if (dwStyle & ES_READONLY) {
                        Ping();
                        return 0;
                    }
                       edtPosProc (hWnd); 
                    if (dwStyle