medit.c

在ｅｃｏｓ 下mingui 的移植开发

                gdi_tabbedtextout(hdc, 
						pMLEditData->leftMargin - pMLEditData->dx_chars[pMLEditData->vdispPos],
						GetSysCharHeight()*(pLineData->lineNO - pMLEditData->StartlineDisp) //Mneeded
							+ pMLEditData->topMargin,
						dispBuffer,
						pLineData->dataEnd);
				*/
				
                TextOut (hdc, 
						pMLEditData->leftMargin - pMLEditData->dx_chars[pMLEditData->vdispPos],
						GetSysCharHeight()*(pLineData->lineNO - pMLEditData->StartlineDisp) //Mneeded
							+ pMLEditData->topMargin,
						dispBuffer);
				
			}
            EndPaint (hWnd, hdc);
        }
        break;

        case MSG_KEYDOWN:
        {
            BOOL    bChange = FALSE;
            int     i;
            RECT    InvRect; // modified by leon
            int     deleted;
			PLINEDATA temp = NULL;
			char *  tempP = NULL;

            pMLEditData =(PMLEDITDATA) GetWindowAdditionalData2(hWnd);
			GetClientRect (hWnd, &InvRect);// added by leon to optimize display
        
            switch (LOWORD (wParam))
            {
				
                case SCANCODE_ENTER:
				{
					pLineData = GetLineData(pMLEditData,pMLEditData->editLine);
					edtGetLineInfo (hWnd, pLineData);
					if (pMLEditData->veditPos < pMLEditData->fit_chars)
						tempP = pLineData->buffer + pMLEditData->pos_chars[pMLEditData->veditPos];
			//fprintf (stderr, "temp = %s\n", tempP);
			//fprintf (stderr, "veditPos= %d\n", pMLEditData->veditPos);
			//fprintf (stderr, "buffer = %s\n", pLineData->buffer);
			//fprintf (stderr, "dataEnd = %d\n", pLineData->dataEnd);
				    temp = pLineData->next;
					pLineData->next = malloc( sizeof(LINEDATA) );
					pLineData->next->previous = pLineData;
					pLineData->next->next = temp;
					if(temp)
					{
						temp->previous = pLineData->next;
					}
					temp = pLineData->next;
					temp->lineNO  = pMLEditData->editLine + 1;
					if(tempP)
					{
						memcpy(temp->buffer,tempP,strlen(tempP));
						temp->dataEnd = strlen(tempP);
					}
					else
						temp->dataEnd = 0;
					temp->buffer[temp->dataEnd] = '\0'; 
					pLineData->dataEnd = pMLEditData->pos_chars[pMLEditData->veditPos];
					pLineData->buffer[pLineData->dataEnd]='\0';
					temp = temp->next;
					while (temp)
					{
						temp->lineNO++;
						temp = temp->next;
					}
					// added by leon to optimize display
					if ((pMLEditData->editLine - pMLEditData->StartlineDisp + 1) < pMLEditData->MaxlinesDisp) {
						if (!(pMLEditData->dx_chars[pMLEditData->veditPos] - pMLEditData->leftMargin
                	         	> edtGetOutWidth (hWnd))) {
							InvRect.left = pMLEditData->leftMargin;
							InvRect.top  = (pMLEditData->editLine - pMLEditData->StartlineDisp -1) 
												* GetSysCharHeight()//Mneeded
										      	+ pMLEditData->topMargin;
						}
								
				     }else {
						if ((pMLEditData->vdispPos == 0) 
								&& (pMLEditData->vdispPos == pMLEditData->veditPos))		 
							InvRect.bottom  -=  GetSysCharHeight(); //Mneeded
					 }
					// added by leon to optimize display
					pMLEditData->veditPos = 0;
					pMLEditData->vdispPos = 0;
				
					if(pMLEditData->linesDisp < pMLEditData->MaxlinesDisp)
					{
						pMLEditData->EndlineDisp++;
						pMLEditData->linesDisp++;
					}
					else if(pMLEditData->editLine == pMLEditData->EndlineDisp) 
					{
						pMLEditData->StartlineDisp++;
						pMLEditData->EndlineDisp++;
					}
					pMLEditData->editLine++;
					edtGetLineInfo (hWnd, GetLineData(pMLEditData,pMLEditData->editLine));	
					pMLEditData->lines++;
					
					edtSetCaretPos (hWnd);
					// added by leon for scrollbars
					edtSetScrollInfo (hWnd, pMLEditData, TRUE);
		        	// added by leon for scrollbars
    	            InvalidateRect (hWnd, &InvRect, FALSE); // modified by leon

					NotifyParent (hWnd, GetDlgCtrlID(hWnd), EN_CHANGE);
        	        return 0;
				}
                case SCANCODE_HOME:
				{
					PLINEDATA temp;
                    if (pMLEditData->veditPos == 0)
                        return 0;

					pMLEditData->veditPos = 0;

					
					edtSetCaretPos (hWnd);
					temp = GetLineData(pMLEditData,pMLEditData->editLine);	
                    if (pMLEditData->vdispPos != 0)
					{
						pMLEditData->vdispPos = 0;
					    InvalidateRect (hWnd, NULL, FALSE);
					}
					// added by leon for scrollbars
					edtSetScrollInfo (hWnd, pMLEditData, TRUE);
        			// added by leon for scrollbars
               		return 0;
            	}
                case SCANCODE_END:
                {
                    int newStartPos;
                    pLineData = GetLineData(pMLEditData,pMLEditData->editLine);
                    //if (pMLEditData->editPos == pLineData->dataEnd)
                    if (pMLEditData->veditPos == pMLEditData->fit_chars)
                        return 0;
                    newStartPos = edtGetStartDispPosAtEnd (hWnd, pLineData);
                    //pMLEditData->editPos = pLineData->dataEnd;
                    pMLEditData->veditPos = pMLEditData->fit_chars;
                    

                    if (pMLEditData->vdispPos != newStartPos) {
                    	pMLEditData->vdispPos = newStartPos;
                        InvalidateRect (hWnd, NULL, FALSE);
					}
					edtSetCaretPos (hWnd);
					// added by leon for scrollbars
					edtSetScrollInfo (hWnd, pMLEditData, TRUE);
	   		     	// added by leon for scrollbars
                }
                return 0;

                case SCANCODE_CURSORBLOCKLEFT: 
                {
                    BOOL 		bScroll = FALSE;
                    int  		newStartPos;
					PLINEDATA 	temp;
					pLineData = GetLineData(pMLEditData,pMLEditData->editLine);
                    if (pMLEditData->veditPos == 0 )
					{
						temp = pLineData->previous;
						if(temp && pMLEditData->editLine > 0 )
						{
							if (pMLEditData->editLine == pMLEditData->StartlineDisp) {
								bScroll = TRUE;
								pMLEditData->StartlineDisp--;
								if (pMLEditData->EndlineDisp >= pMLEditData->MaxlinesDisp)
									pMLEditData->EndlineDisp--;
							}
							pMLEditData->editLine --;
							edtGetLineInfo (hWnd, GetLineData (pMLEditData, pMLEditData->editLine));
							pMLEditData->veditPos = pMLEditData->fit_chars; 
		                    newStartPos = edtGetStartDispPosAtEnd (hWnd, temp);
                    		if (pMLEditData->vdispPos != newStartPos)
							{
								pMLEditData->vdispPos = newStartPos;
								bScroll = TRUE;
							}
						}
						else
	                        return 0;
					}
					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--;
						}
							
                    }    
					edtSetCaretPos (hWnd);
                    if (bScroll)
                        InvalidateRect (hWnd, NULL, FALSE);
					// added by leon for scrollbars
					edtSetScrollInfo (hWnd, pMLEditData, TRUE);
      			  	// added by leon for scrollbars
                }
                return 0;
                
				case SCANCODE_CURSORBLOCKRIGHT:
                {
                    BOOL bScroll = FALSE;
                    //int  scrollStep, moveStep;
					PLINEDATA temp;

					pLineData = GetLineData(pMLEditData,pMLEditData->editLine);
                    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->editPos  = 0;
							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);
						/*
							pMLEditData->veditPos--;
							if ((pMLEditData->dx_chars[pMLEditData->veditPos] 
										- pMLEditData->dx_chars[pMLEditData->vdispPos] )
								   >= (pMLEditData->dx_chars[pMLEditData->veditPos + 1] 
										- pMLEditData->dx_chars[pMLEditData->vdispPos + 1] ))
								pMLEditData->vdispPos++;
							else
								pMLEditData->vdispPos += 2;
						*/		
						}else {
							pMLEditData->veditPos++;
						}
						//pMLEditData->veditPos++;
					}
					edtSetCaretPos (hWnd);
					/*
                    SetCaretPos (hWnd, 
                        //pMLEditData->caretPos * GetSysCharWidth () 
						pMLEditData->dx_chars[pMLEditData->veditPos] - pMLEditData->dx_chars[pMLEditData->vdispPos]
                            + pMLEditData->leftMargin, 
                        (pMLEditData->editLine - pMLEditData->StartlineDisp) * GetSysCharHeight ()//Mneeded 
                        	+ pMLEditData->topMargin);
					*/
                    if (bScroll)
                        InvalidateRect (hWnd, NULL, FALSE);
					// added by leon for scrollbars
					edtSetScrollInfo (hWnd, pMLEditData, TRUE);
	   	   		  	// added by leon for scrollbars
                }
                return 0;
               	
				case SCANCODE_CURSORBLOCKUP:
				{
                    BOOL bScroll = FALSE;
                    int  newStartPos, olddispPos, oldeditPos;
					PLINEDATA temp;

					//GetClientRect (hWnd, &InvRect);
					olddispPos = pMLEditData->dx_chars[pMLEditData->vdispPos];
					oldeditPos = pMLEditData->dx_chars[pMLEditData->veditPos];
					pLineData = GetLineData(pMLEditData,pMLEditData->editLine);
					temp = pLineData->previous; 
					if(pMLEditData->editLine == 0)
						return 0;
					else if (pMLEditData->editLine == pMLEditData->StartlineDisp)
					{
						bScroll = TRUE;
						pMLEditData->StartlineDisp--;
						pMLEditData->EndlineDisp--;	
					}
					pMLEditData->editLine--;
					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;
					}
					
                    SetCaretPos (hWnd, 
                        pMLEditData->dx_chars[pMLEditData->veditPos] 
							- pMLEditData->dx_chars[pMLEditData->vdispPos] 
                            + pMLEditData->leftMargin, 
					    (pMLEditData->editLine - pMLEditData->StartlineDisp) * GetSysCharHeight()
                            + pMLEditData->topMargin);
					// added by leon to optimize display
					if (bScroll)
						InvalidateRect(hWnd,NULL,FALSE);	
					// added by leon to optimize display
					// added by leon for scrollbars
					edtSetScrollInfo (hWnd, pMLEditData, TRUE);
	   	   		  	// added by leon for scrollbars
				}
				break;
				case SCANCODE_CURSORBLOCKDOWN:
				{
                    BOOL bScroll = FALSE;
                    int  newStartPos, olddispPos, oldeditPos;
					PLINEDATA temp;

					//GetClientRect (hWnd, &InvRect);
					oldeditPos = pMLEditData->dx_chars[pMLEditData->veditPos];
					olddispPos = pMLEditData->dx_chars[pMLEditData->vdispPos];
					pLineData = GetLineData(pMLEditData,pMLEditData->editLine);
					temp = pLineData->next; 
					if(pMLEditData->editLine == pMLEditData->lines-1)
						return 0;
					else if (pMLEditData->editLine == pMLEditData->EndlineDisp)
					{
						bScroll = TRUE;
						pMLEditData->StartlineDisp++;
						pMLEditData->EndlineDisp++;	
					}
					pMLEditData->editLine++;
					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;
					}
					
					//edtGetLineInfo (hWnd, GetLineData (pMLEditData, pMLEditData->editLine));
					edtSetCaretPos (hWnd);
					// added by leon to optimize display
					if (bScroll)
						InvalidateRect(hWnd,NULL,FALSE);