📄 medit.c
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if(pMLEditData->linesDisp < pMLEditData->MaxlinesDisp)
{
pMLEditData->EndlineDisp++;
pMLEditData->linesDisp++;
}
else if(pMLEditData->editLine == pMLEditData->EndlineDisp)
{
pMLEditData->StartlineDisp++;
pMLEditData->EndlineDisp++;
}
pMLEditData->editLine++;
pMLEditData->lines++;
SetCaretPos (pMLEditData->caretPos * GetSysCharWidth (hWnd)
+ pMLEditData->leftMargin,
(pMLEditData->editLine - pMLEditData->StartlineDisp) * GetSysCharHeight(hWnd)
+pMLEditData->topMargin);
InvalidateRect (hWnd, NULL, FALSE);
return 0;
}
case VK_HOME: /* SCANCODE_HOME: */
{
PLINEDATA temp;
if (pMLEditData->editPos == 0)
return 0;
pMLEditData->editPos = 0;
pMLEditData->caretPos = 0;
SetCaretPos (pMLEditData->leftMargin,
(pMLEditData->editLine-pMLEditData->StartlineDisp) * GetSysCharHeight(hWnd)
+pMLEditData->topMargin);
temp = GetLineData(pMLEditData,pMLEditData->editLine);
if (pMLEditData->dispPos != 0)
{
pMLEditData->dispPos = 0;
InvalidateRect (hWnd, NULL, FALSE);
}
return 0;
}
case VK_END: /* SCANCODE_END: */
{
int newStartPos;
pLineData = GetLineData(pMLEditData,pMLEditData->editLine);
if (pMLEditData->editPos == pLineData->dataEnd)
return 0;
newStartPos = edtGetStartDispPosAtEnd (hWnd, pLineData);
pMLEditData->editPos = pLineData->dataEnd;
pMLEditData->caretPos = pMLEditData->editPos - newStartPos;
SetCaretPos (pMLEditData->caretPos * GetSysCharWidth (hWnd)
+ pMLEditData->leftMargin,
(pMLEditData->editLine-pMLEditData->StartlineDisp) * GetSysCharHeight(hWnd)
+ pMLEditData->topMargin);
if (pMLEditData->dispPos != newStartPos)
InvalidateRect (hWnd, NULL, FALSE);
pMLEditData->dispPos = newStartPos;
}
return 0;
case VK_LEFT: /* SCANCODE_CURSORBLOCKLEFT: */
{
BOOL bScroll = FALSE;
int scrollStep,newStartPos;
PLINEDATA temp;
pLineData = GetLineData(pMLEditData,pMLEditData->editLine);
if (pMLEditData->editPos == 0 )
{
temp = pLineData->previous;
if(temp && pMLEditData->editLine > pMLEditData->StartlineDisp)
{
pMLEditData->editLine --;
pMLEditData->editPos = temp->dataEnd;
newStartPos = edtGetStartDispPosAtEnd (hWnd, temp);
pMLEditData->caretPos = pMLEditData->editPos - newStartPos;
if (pMLEditData->dispPos != newStartPos)
{
pMLEditData->dispPos = newStartPos;
bScroll = TRUE;
}
}
else
return 0;
}
else
{ if (edtIsACCharBeforePosition (pLineData->buffer,
pLineData->dataEnd,
pMLEditData->editPos)) {
scrollStep = 2;
pMLEditData->editPos -= 2;
}
else {
scrollStep = 1;
pMLEditData->editPos --;
}
pMLEditData->caretPos -= scrollStep;
if (pMLEditData->caretPos == 0
&& pMLEditData->editPos != 0) {
bScroll = TRUE;
if (edtIsACCharBeforePosition (pLineData->buffer,
pLineData->dataEnd,
pMLEditData->editPos)) {
pMLEditData->dispPos -= 2;
pMLEditData->caretPos = 2;
}
else {
pMLEditData->dispPos--;
pMLEditData->caretPos = 1;
}
}
else if (pMLEditData->caretPos < 0) {
pMLEditData->dispPos = 0;
pMLEditData->caretPos = 0;
}
}
SetCaretPos (pMLEditData->caretPos * GetSysCharWidth (hWnd)
+ pMLEditData->leftMargin,
(pMLEditData->editLine - pMLEditData->StartlineDisp) * GetSysCharHeight(hWnd)
+ pMLEditData->topMargin);
if (bScroll)
InvalidateRect (hWnd, NULL, FALSE);
}
return 0;
case VK_RIGHT: /* SCANCODE_CURSORBLOCKRIGHT: */
{
BOOL bScroll = FALSE;
int scrollStep, moveStep;
PLINEDATA temp;
pLineData = GetLineData(pMLEditData,pMLEditData->editLine);
if (pMLEditData->editPos == pLineData->dataEnd)
{
temp = pLineData->next;
if(temp)
{
pMLEditData->editLine++;
pMLEditData->editPos = 0;
pMLEditData->caretPos = 0;
if(pMLEditData->dispPos !=0)
{
pMLEditData->dispPos = 0;
bScroll = TRUE;
}
}
else
return 0;
}
else
{
if (edtIsACCharAtPosition (pLineData->buffer,
pLineData->dataEnd,
pMLEditData->dispPos)) {
if (edtIsACCharAtPosition (pLineData->buffer,
pLineData->dataEnd,
pMLEditData->editPos)) {
scrollStep = 2;
moveStep = 2;
pMLEditData->editPos += 2;
}
else {
scrollStep = 2;
moveStep = 1;
pMLEditData->editPos ++;
}
}
else {
if (edtIsACCharAtPosition (pLineData->buffer,
pLineData->dataEnd,
pMLEditData->editPos)) {
if (edtIsACCharAtPosition (pLineData->buffer,
pLineData->dataEnd,
pMLEditData->dispPos + 1))
scrollStep = 3;
else
scrollStep = 2;
moveStep = 2;
pMLEditData->editPos += 2;
}
else {
scrollStep = 1;
moveStep = 1;
pMLEditData->editPos ++;
}
}
pMLEditData->caretPos += moveStep;
if (pMLEditData->caretPos * GetSysCharWidth (hWnd)
> edtGetOutWidth (hWnd)) {
bScroll = TRUE;
pMLEditData->dispPos += scrollStep;
pMLEditData->caretPos =
pMLEditData->editPos - pMLEditData->dispPos;
}
}
SetCaretPos (pMLEditData->caretPos * GetSysCharWidth (hWnd)
+ pMLEditData->leftMargin,
(pMLEditData->editLine - pMLEditData->StartlineDisp) * GetSysCharHeight (hWnd)
+ pMLEditData->topMargin);
if (bScroll)
InvalidateRect (hWnd, NULL, FALSE);
}
return 0;
case VK_UP: /* SCANCODE_CURSORBLOCKUP: */
{
BOOL bScroll = FALSE;
int newStartPos;
PLINEDATA temp;
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--;
if( pMLEditData->editPos >= temp->dataEnd )
{
pMLEditData->editPos = temp->dataEnd;
pMLEditData->dispPos = 0;
newStartPos = edtGetStartDispPosAtEnd (hWnd, temp);
pMLEditData->dispPos = newStartPos;
pMLEditData->caretPos = pMLEditData->editPos - newStartPos;
bScroll = TRUE;
}
else
{
newStartPos = edtGetOffset(hWnd, pMLEditData,temp,
pMLEditData->caretPos * GetSysCharWidth (hWnd)
+ pMLEditData->leftMargin);
if(!edtIsACCharFromBegin(temp->buffer,temp->dataEnd,
pMLEditData->dispPos))
{
bScroll = TRUE;
pMLEditData->dispPos--;
newStartPos = edtGetOffset(hWnd, pMLEditData,temp,
pMLEditData->caretPos * GetSysCharWidth (hWnd)
+ pMLEditData->leftMargin+GetSysCharWidth(hWnd)/2);
}
pMLEditData->editPos = newStartPos + pMLEditData->dispPos;
pMLEditData->caretPos = newStartPos;
}
SetCaretPos (pMLEditData->caretPos * GetSysCharWidth (hWnd)
+ pMLEditData->leftMargin,
(pMLEditData->editLine - pMLEditData->StartlineDisp) * GetSysCharHeight(hWnd)
+ pMLEditData->topMargin);
if(bScroll)
InvalidateRect(hWnd,NULL,FALSE);
}
break;
case VK_DOWN: /* SCANCODE_CURSORBLOCKDOWN: */
{
BOOL bScroll = FALSE;
int newStartPos;
PLINEDATA temp;
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++;
if( pMLEditData->editPos >= temp->dataEnd )
{
pMLEditData->editPos = temp->dataEnd;
pMLEditData->dispPos = 0;
newStartPos = edtGetStartDispPosAtEnd (hWnd, temp);
pMLEditData->dispPos = newStartPos;
pMLEditData->caretPos = pMLEditData->editPos - newStartPos;
bScroll = TRUE;
}
else
{
newStartPos = edtGetOffset(hWnd, pMLEditData,temp,
pMLEditData->caretPos * GetSysCharWidth (hWnd)
+ pMLEditData->leftMargin);
if(!edtIsACCharFromBegin(temp->buffer,temp->dataEnd,
pMLEditData->dispPos))
{
bScroll = TRUE;
pMLEditData->dispPos--;
newStartPos = edtGetOffset(hWnd, pMLEditData,temp,
pMLEditData->caretPos * GetSysCharWidth (hWnd)
+ pMLEditData->leftMargin+GetSysCharWidth(hWnd)/2);
}
pMLEditData->editPos = newStartPos + pMLEditData->dispPos;
pMLEditData->caretPos = newStartPos;
}
SetCaretPos (pMLEditData->caretPos * GetSysCharWidth (hWnd)
+ pMLEditData->leftMargin,
(pMLEditData->editLine - pMLEditData->StartlineDisp) * GetSysCharHeight(hWnd)
+ pMLEditData->topMargin);
if(bScroll)
InvalidateRect(hWnd,NULL,FALSE);
}
break;
case VK_INSERT: /* SCANCODE_INSERT: */
dw = GetWindowAdditionalData(hWnd);
dw ^= EST_REPLACE;
SetWindowAdditionalData(hWnd,dw);
break;
case VK_DELETE: /* SCANCODE_REMOVE: */
{
PLINEDATA temp;
int leftLen;
pLineData = GetLineData(pMLEditData,pMLEditData->editLine);
if ((GetWindowAdditionalData(hWnd) & EST_READONLY) ){
#if 0 /* fix: no ping() */
ping ();
#endif
return 0;
}
temp = pLineData->next;
if (pLineData->dataEnd == pMLEditData->editPos && temp)
{
if(pLineData->dataEnd + temp->dataEnd <= LEN_MLEDIT_BUFFER)
{
memcpy(pLineData->buffer+pLineData->dataEnd,temp->buffer,temp->dataEnd);
pLineData->dataEnd += temp->dataEnd;
pLineData->buffer[pLineData->dataEnd] = '\0';
if(temp->next)
{
pLineData->next = temp->next;
temp->next->previous = pLineData;
}
else
pLineData->next = NULL;
free(temp);
temp = pLineData->next;
while (temp)
{
temp->lineNO--;
temp = temp->next;
}
if(pMLEditData->lines <= pMLEditData->MaxlinesDisp)
{
pMLEditData->EndlineDisp--;
pMLEditData->linesDisp--;
}
if(pMLEditData->EndlineDisp >= pMLEditData->lines-1)
{
pMLEditData->EndlineDisp--;
if(pMLEditData->StartlineDisp !=0)
pMLEditData->StartlineDisp--;
else
pMLEditData->linesDisp--;
}
pMLEditData->lines--;
}
else if (temp->dataEnd > 0)
{
leftLen = LEN_MLEDIT_BUFFER - pLineData->dataEnd;
memcpy(pLineData->buffer+pLineData->dataEnd,temp->buffer,leftLen);
pLineData->dataEnd +=leftLen;
pLineData->buffer[pLineData->dataEnd] = '\0';
memcpy(temp->buffer,temp->buffer+leftLen,temp->dataEnd-leftLen);
temp->dataEnd -=leftLen;
temp->buffer[temp->dataEnd] = '\0';
}
}
else if (pMLEditData->editPos != pLineData->dataEnd)
{
if (edtIsACCharAtPosition (pLineData->buffer,
pLineData->dataEnd,
pMLEditData->editPos))
deleted = 2;
else
deleted = 1;
for (i = pMLEditData->editPos;
i < pLineData->dataEnd - deleted;
i++)
pLineData->buffer [i]
= pLineData->buffer [i + deleted];
pLineData->dataEnd -= deleted;
pLineData->buffer[pLineData->dataEnd] = '\0';
}
bChange = TRUE;
InvalidateRect (hWnd, NULL,FALSE);
}
break;
case VK_BACK: /* SCANCODE_BACKSPACE: */
{
PLINEDATA temp;
int leftLen,tempEnd;
if ((GetWindowAdditionalData(hWnd) & EST_READONLY) ){
#if 0 /* fix: no Ping() */
Ping ();
#endif
return 0;
}
pLineData = GetLineData(pMLEditData,pMLEditData->editLine);
temp = pLineData->previous;
if (pMLEditData->editPos == 0 && temp)
{
tempEnd = temp->dataEnd;
if(pLineData->dataEnd + temp->dataEnd <= LEN_MLEDIT_BUFFER)
{
memcpy(temp->buffer+temp->dataEnd,pLineData->buffer,pLineData->dataEnd);
temp->dataEnd +=pLineData->dataEnd;
temp->buffer[temp->dataEnd] = '\0';
if(pLineData->next)
{
temp->next = pLineData->next;
pLineData->next->previous = temp;
}
else
temp->next = NULL;
free(pLineData);
pLineData = temp;
temp = temp->next;
while(temp)
{
temp->lineNO--;
temp = temp->next;
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