/* ----- Extend the marked block to the new x,y position ---- */
static void ExtendBlock(WINDOW wnd, int x, int y)
{
int bbl, bel;
int ptop = min(wnd->BlkBegLine, wnd->BlkEndLine);
int pbot = max(wnd->BlkBegLine, wnd->BlkEndLine);
char *lp = TextLine(wnd, wnd->wtop+y);
int len = (int) (strchr(lp, '\n') - lp);
x = max(0, min(x, len));
y = max(0, y);
wnd->BlkEndCol = min(len, x+wnd->wleft);
wnd->BlkEndLine = y+wnd->wtop;
SendMessage(wnd, KEYBOARD_CURSOR, wnd->BlkEndCol, wnd->BlkEndLine);
bbl = min(wnd->BlkBegLine, wnd->BlkEndLine);
bel = max(wnd->BlkBegLine, wnd->BlkEndLine);
while (ptop < bbl) {
WriteTextLine(wnd, NULL, ptop, FALSE);
ptop++;
}
for (y = bbl; y <= bel; y++)
WriteTextLine(wnd, NULL, y, FALSE);
while (pbot > bel) {
WriteTextLine(wnd, NULL, pbot, FALSE);
--pbot;
}
}
/* -------------- Del key ---------------- */
static void DelKey(WINDOW wnd)
{
char *currchar = CurrChar;
int repaint = *currchar == '\n';
if (TextBlockMarked(wnd)) {
SendMessage(wnd, COMMAND, ID_DELETETEXT, 0);
SendMessage(wnd, PAINT, 0, 0);
return;
}
if (isMultiLine(wnd) && *currchar == '\n' && *(currchar+1) == '\0')
return;
strcpy(currchar, currchar+1);
if (repaint) {
BuildTextPointers(wnd);
SendMessage(wnd, PAINT, 0, 0);
}
else {
ModTextPointers(wnd, wnd->CurrLine+1, -1);
WriteTextLine(wnd, NULL, wnd->WndRow+wnd->wtop, FALSE);
}
wnd->TextChanged = TRUE;
}
static void RepaintLine(WINDOW wnd)
{
SendMessage(wnd, KEYBOARD_CURSOR, WndCol, wnd->WndRow);
WriteTextLine(wnd, NULL, wnd->CurrLine, FALSE);
}
/* --------- All displayable typed keys ------------- */
static void KeyTyped(WINDOW wnd, int c)
{
char *currchar = CurrChar;
if ((c != '\n' && c < ' ') || (c & 0x1000))
/* ---- not recognized by editor --- */
return;
if (!isMultiLine(wnd) && TextBlockMarked(wnd)) {
SendMessage(wnd, CLEARTEXT, 0, 0);
currchar = CurrChar;
}
/* ---- test typing at end of text ---- */
if (currchar == wnd->text+wnd->MaxTextLength) {
/* ---- typing at the end of maximum buffer ---- */
beep();
return;
}
if (*currchar == '\0') {
/* --- insert a newline at end of text --- */
*currchar = '\n';
*(currchar+1) = '\0';
BuildTextPointers(wnd);
}
/* --- displayable char or newline --- */
if (c == '\n' || wnd->InsertMode || *currchar == '\n') {
/* ------ inserting the keyed character ------ */
if (wnd->text[wnd->textlen-1] != '\0') {
/* --- the current text buffer is full --- */
if (wnd->textlen == wnd->MaxTextLength) {
/* --- text buffer is at maximum size --- */
beep();
return;
}
/* ---- increase the text buffer size ---- */
wnd->textlen += GROWLENGTH;
/* --- but not above maximum size --- */
if (wnd->textlen > wnd->MaxTextLength)
wnd->textlen = wnd->MaxTextLength;
wnd->text = DFrealloc(wnd->text, wnd->textlen+2);
wnd->text[wnd->textlen-1] = '\0';
currchar = CurrChar;
}
memmove(currchar+1, currchar, strlen(currchar)+1);
ModTextPointers(wnd, wnd->CurrLine+1, 1);
if (isMultiLine(wnd) && wnd->wlines > 1)
wnd->textwidth = max(wnd->textwidth,
(int) (TextLine(wnd, wnd->CurrLine+1)-
TextLine(wnd, wnd->CurrLine)));
else
wnd->textwidth = max(wnd->textwidth,
strlen(wnd->text));
WriteTextLine(wnd, NULL,
wnd->wtop+wnd->WndRow, FALSE);
}
/* ----- put the char in the buffer ----- */
*currchar = c;
wnd->TextChanged = TRUE;
if (c == '\n') {
wnd->wleft = 0;
BuildTextPointers(wnd);
End(wnd);
Forward(wnd);
SendMessage(wnd, PAINT, 0, 0);
return;
}
/* ---------- test end of window --------- */
if (WndCol == ClientWidth(wnd)-1) {
if (!isMultiLine(wnd)) {
if (!(currchar == wnd->text+wnd->MaxTextLength-2))
SendMessage(wnd, HORIZSCROLL, TRUE, 0);
}
else {
char *cp = currchar;
while (*cp != ' ' && cp != TextLine(wnd, wnd->CurrLine))
--cp;
if (cp == TextLine(wnd, wnd->CurrLine) ||
!wnd->WordWrapMode)
SendMessage(wnd, HORIZSCROLL, TRUE, 0);
else {
int dif = 0;
if (c != ' ') {
dif = (int) (currchar - cp);
wnd->CurrCol -= dif;
SendMessage(wnd, KEYBOARD, DEL, 0);
--dif;
}
SendMessage(wnd, KEYBOARD, '\n', 0);
currchar = CurrChar;
wnd->CurrCol = dif;
if (c == ' ')
return;
}
}
}
/* ------ display the character ------ */
SetStandardColor(wnd);
PutWindowChar(wnd, c, WndCol, wnd->WndRow);
/* ----- advance the pointers ------ */
wnd->CurrCol++;
}
