void OpDragBox::UpdateSolidDragBox(const DocRect& drNewDragBox)
{
// Set up four update rectangles. We will xor none, some, or all of these rectangles to
// produce the new drag box.
DocRect drUpdate[4];
INT32 nHowMany;
// Find the intersection of the last and new rectangles. We will exclude this from
// any xoring as it is already xored.
DocRect drCommonDragBox = drNewDragBox.Intersection(m_drLastDragBox);
// Calculate the rectangles that need to be xored to change the last into the new
// drag box. This depends on how they overlap.
if (drCommonDragBox.IsEmpty())
{
// There's no intersection between the last drag box and the new drag box, even
// though they share a common corner. So xor the full extent of both drag rects.
drUpdate[0] = m_drLastDragBox;
drUpdate[1] = drNewDragBox;
nHowMany = 2;
}
else if (drNewDragBox.ContainsRect(m_drLastDragBox))
{
// The new drag rect completely contains the last one, so clip out the last.
nHowMany = ((DocRect&) drNewDragBox).SplitRect(m_drLastDragBox, drUpdate);
}
else if (m_drLastDragBox.ContainsRect(drNewDragBox))
{
// The last drag rect completely contains the new one, so clip out the new.
nHowMany = m_drLastDragBox.SplitRect(drNewDragBox, drUpdate);
}
else
{
// The drag rectangles overlap but neither completely contains the other, so set
// the xor rectangles to be each drag rectangle less the common drag rectangle.
nHowMany = m_drLastDragBox.SplitRect(drCommonDragBox, &drUpdate[0]);
nHowMany += ((DocRect&) drNewDragBox).SplitRect(drCommonDragBox, &drUpdate[nHowMany]);
}
// Sanity check.
ERROR3IF(nHowMany < 0 || nHowMany > 4,
"Wrong number of split rects in OpDragBox::UpdateSolidDragBox\n");
// Draw the xor rects.
for (INT32 i = 0; i < nHowMany; i++)
{
DrawXorRect(drUpdate[i], m_pStartSpread, drUpdate[i]);
}
}
BOOL OpNudge::IsNudgeOK(BOOL dx,BOOL dy)
{
// Get the selection
SelRange* pSel = GetApplication()->FindSelection();
ERROR2IF(pSel == NULL,FALSE,"Awooga, NULL sel range");
// Find out the bounding rectangle of the selection
DocRect BoundingRect = pSel->GetBoundingRect();
// Find out the Pasteboard rect
DocRect PasteRect;
Spread* pSpread = pOurDoc->GetSelectedSpread();
if (pSpread==NULL)
PasteRect = BoundingRect;
else
{
// Try to make the pasteboard grow if necessary to include the new object position
// This is very quick if the pasteboard is large enough already.
pSpread->ExpandPasteboardToInclude(BoundingRect);
// And re-read the bounding rectangle of the selection, as the pasteboard resize may have
// caused the origin of our entire coordinate space to have moved! Argh!
BoundingRect = pSel->GetBoundingRect();
// BoundingRect.Translate(dx,dy);
// This is in Document Coords, so we need to convert it
PasteRect = pSpread->GetPasteboardRect();
pSpread->DocCoordToSpreadCoord(&PasteRect);
}
// Assume the nudge will be OK.
BOOL NudgeOK = TRUE;
if (PasteRect.ContainsRect(BoundingRect))
{
// Untranslated bounds fit inside pasteboard rect, so we must complain if the bounds
// do not fit *after* translation
// Translate the bounds by the nudge values
BoundingRect.Translate(dx,dy);
// Do the translated bounds still fit entirely in the pasteboard rect?
NudgeOK = PasteRect.ContainsRect(BoundingRect);
}
else
{
// The original bounds overlap the pasteboard rect, so we must complain if the user
// nudges the bounds completely out of sight
if (PasteRect.IsIntersectedWith(BoundingRect))
{
// The original bounds intersect with the pasteboard rect
BoundingRect.Translate(dx,dy);
// Only allow the nudge if the translated bounds still overlap with the spread.
NudgeOK = PasteRect.IsIntersectedWith(BoundingRect);
}
}
// If the nudge is OK, we may need to scroll the DocView?
/* Jim, 12/9/96 - removed this because we don't want to scroll to show opn nudges
if (NudgeOK)
{
DocCoord Coord(0,0);
// If nudging left or right, pick the min or max X coord
if (dx != 0)
{
if (dx < 0)
Coord.x = BoundingRect.lox;
else
Coord.x = BoundingRect.hix;
}
// If nudging up or down, pick the max or min Y coord
if (dy != 0)
{
if (dy < 0)
Coord.y = BoundingRect.loy;
else
Coord.y = BoundingRect.hiy;
}
// If we have picked a coord, ensure that this coord is visible in the selected spread
// of the selected DocView
if (Coord != DocCoord(0,0))
{
DocView* pDocView = DocView::GetSelected();
if (pDocView != NULL)
pDocView->ScrollToShow(&Coord);
}
}
*/
return NudgeOK;
}
