void FrameBuffer::DrawPoint(int u, int v, int psize, unsigned int color) {
for (int i = v - psize/2; i <= v + psize/2; i++) {
for (int j = u - psize/2; j <= u + psize/2; j++) {
SetSafe(j, i, color);
}
}
}
void FrameBuffer::FillCircle(float cx, float cy, float r, unsigned int color) {
for(float x = cx - r; x < cx + r; x++) {
for(float y = cy - r; y < cy + r; y++) {
float dx = cx - x;
float dy = cy - y;
if ((dx*dx + dy*dy) <= (r*r)) {
SetSafe(x,y,color);
}
}
}
}
//8-way symmetry circle
void FrameBuffer::DrawCircle(float cx, float cy, float r, unsigned int color) {
SetSafe(cx + r, cy, color);
SetSafe(cx, cx + r, color);
SetSafe(cx, cy - r, color);
float x = 1.0f;
float y = r;
y = sqrt((r*r) - 1) + 0.5;
while (x < y) {
SetSafe(cx + y, cy - x, color);
SetSafe(cx - y, cy + x, color);
SetSafe(cx - y, cy - x, color);
SetSafe(cx + x, cy + y, color);
SetSafe(cx + x, cy - y, color);
SetSafe(cx - x, cy + y, color);
SetSafe(cx - x, cy - y, color);
SetSafe(cx + y, cy + x, color);
y = sqrt((r*r) - (x*x)) + 0.5;
x++;
}
if (abs(x - y) < 0.01) {
SetSafe(cx + x, cy + y, color);
SetSafe(cx + x, cy - y, color);
SetSafe(cx - x, cy + y, color);
SetSafe(cx - x, cy - y, color);
}
}
void Undo(WORD Flags)
/* Flags: 0 = called as vi-like undo:
* undo of whole last operation,
* a second undo reverts the undo operation,
* entered as character 'u';
* 1 = called as Windows-like undo:
* undo last change at one position,
* repeated undos go further back in history,
* entered as <Alt+Bksp>, menu, or tool button;
* 2 = repeated vi-like undo ('.'):
* can repeat both undo and redo;
* 4 = vi-like undo of whole line:
* not yet implemented,
* entered as character 'U';
*/
{ LPUNDO lpUndo;
BOOL fUndone = FALSE;
ULONG StartSkip = (ULONG)-1;
extern INT HexEditFirstNibble;
if (Flags & 3) lpUndo = NextSequenceUndo;
else {
lpUndo = NextSequenceUndo = LastUndo;
if (LastUndo != NULL) {
LastUndo->Flags |= UD_START;
if (LastUndo->Flags & UD_BYUNDO) {
if (Redoing && LastUndo->UndoRef!=NULL)
lpUndo = LastUndo->UndoRef;
Redoing ^= TRUE^FALSE;
} else Redoing = FALSE;
}
}
if (lpUndo==NULL || (Redoing && !(lpUndo->Flags & UD_BYUNDO))) {
Error(219);
return;
}
if (IsViewOnly()) return;
if (UtfEncoding == 16) {
/*any undo ops must be double-byte, check before doing anything...*/
LPUNDO lp = lpUndo;
ULONG Skip;
while (lp != NULL) {
if ((Skip = lpUndo->Pos) != (ULONG)-1) {
if (lp->DelFill & 1 || lp->Inserted & 1) {
ErrorBox(MB_ICONSTOP, 260);
return;
}
if (StartSkip == (ULONG)-1) StartSkip = Skip;
if (Flags & 1) break;
}
if (lp->Flags & UD_NEWOP && StartSkip != (ULONG)-1) break;
lp = lp->Prev;
}
StartSkip = (ULONG)-1;
}
HideEditCaret();
wsprintf(QueryString, "%s %s, used mem %lu",
Redoing ? "redoing" : "undoing",
lpUndo->Flags & UD_BYUNDO ? "undo" : "non-undo",
UndoMemUsed);
QueryTime = GetTickCount();
GlobalUndoFlags |= UD_BYUNDO;
StartWithRemove = lpUndo->Flags & UD_START;
StartUndoSequence();
if (FirstUndo == NULL || (FirstUndo->Next == NULL && FirstUndo != lpUndo))
lpUndo = NULL;
StartWithRemove = TRUE;
HexEditFirstNibble = -1;
while (lpUndo != NULL) {
POSITION Pos;
ULONG Skip;
if ((Skip = lpUndo->Pos) != (ULONG)-1) {
if (StartSkip == (ULONG)-1) StartSkip = Skip;
Pos.p = FirstPage;
while (Skip >= Pos.p->Fill) {
if (!Pos.p->Next) {
if (Skip != Pos.p->Fill) {
/*must not occur*/
assert(Skip == Pos.p->Fill); /*!?*/
return;
}
break;
}
Skip -= Pos.p->Fill;
Pos.p = Pos.p->Next;
}
if (SelectCount) {
InvalidateArea(&SelectStart, SelectCount, 1);
SelectCount = 0;
UpdateWindow(hwndMain);
}
Pos.i = (UINT)Skip;
Pos.f = 0; /*TODO: check flags to be filled here*/
if (lpUndo->Inserted) {
SelectStart = Pos;
SelectCount = lpUndo->Inserted;
SelectBytePos = CountBytes(&SelectStart);
DeleteSelected(3);
fUndone = TRUE;
Indenting = FALSE;
}
if (lpUndo->DelFill) {
LPSTR Buf;
LONG ByteCount = CountBytes(&Pos);
if (lpUndo->Flags & UD_GLOBALMEM)
Buf = GlobalLock(lpUndo->DelMem);
else Buf = (LPBYTE)lpUndo + sizeof(UNDO);
if (Buf != NULL) {
NewPosition(&Pos);
InsertBuffer(Buf, lpUndo->DelFill, 0);
fUndone = TRUE;
if (lpUndo->Flags & UD_GLOBALMEM)
GlobalUnlock(lpUndo->DelMem);
/*reposition to current position...*/
Pos.p = FirstPage;
Pos.i = 0;
Advance(&Pos, ByteCount);
if (lpUndo->Flags & UD_SELECT && Flags & 1) {
SelectStart = Pos;
SelectCount = lpUndo->DelFill;
SelectBytePos = CountBytes(&SelectStart);
InvalidateArea(&SelectStart, SelectCount, 0);
CheckClipboard();
}
} else ErrorBox(MB_ICONSTOP, 313);
}
if (Flags & 1) break;
}
if (lpUndo->Flags & UD_NEWOP && StartSkip != (ULONG)-1) break;
lpUndo = lpUndo->Prev;
}
GlobalUndoFlags = 0;
if (lpUndo != NULL) {
if (lpUndo->Flags & UD_SAFE) {
EnableToolButton(IDB_SAVE, FALSE);
SetSafe(FALSE);
GlobalUndoFlags = UD_SAFE;
} else if (fUndone) SetUnsafe();
LastUndo->UndoRef = NextSequenceUndo = lpUndo->Prev;
#if 0
// if (NextSequenceUndo!=NULL && lpUndo->Flags & UD_BYUNDO
// && !(NextSequenceUndo->Flags&UD_BYUNDO))
// NextSequenceUndo->Flags &= ~UD_START;
#endif
} else {
if (fUndone) SetUnsafe();
NextSequenceUndo = NULL;
}
if (Redoing) CheckForUndoneToRelease(FALSE);
/*...undo information about redo and previous undo is not needed anymore
* because the original undo information will be used instead.
*/
if (StartSkip != (ULONG)-1) {
CurrPos.p = FirstPage;
CurrPos.i = 0;
Advance(&CurrPos, StartSkip);
FindValidPosition(&CurrPos,
(WORD)(Mode==InsertMode || Mode==ReplaceMode));
GetXPos(&CurrCol);
}
if (lpUndo==NULL || NextSequenceUndo==NULL)
EnableToolButton(IDB_UNDO, FALSE);
ShowEditCaret();
}
