void CardRegion::CalcApparentCards()
{
nNumApparentCards = CalcApparentCards(cardstack.NumCards());
}
void CardRegion::PrepareDragBitmapsThreed(int numtodrag)
{
RECT rect;
HDC hdc;
int icard;
int numunder = 0;
int iwhichcard;
int numcards = cardstack.NumCards();
//work out how big the bitmaps need to be
nDragCardWidth = (numtodrag - 1) * abs(xoffset) + __cardwidth;
nDragCardHeight = (numtodrag - 1) * abs(yoffset) + __cardheight;
//Create bitmap for the back-buffer
hdc = GetDC(NULL);
hdcBackGnd = CreateCompatibleDC(hdc);
hbmBackGnd = CreateCompatibleBitmap(hdc, nDragCardWidth, nDragCardHeight);
SelectObject(hdcBackGnd, hbmBackGnd);
//create bitmap for the drag-image
hdcDragCard = CreateCompatibleDC(hdc);
hbmDragCard = CreateCompatibleBitmap(hdc, nDragCardWidth, nDragCardHeight);
SelectObject(hdcDragCard, hbmDragCard);
ReleaseDC(NULL, hdc);
UseNicePalette(hdcBackGnd, __hPalette);
UseNicePalette(hdcDragCard, __hPalette);
//grab the first bit of background so we can prep the back buffer; do this by
//rendering the card stack (minus the card we are dragging) to the temporary
//background buffer, so it appears if we have lifted the card from the stack
//--SetRect(&rect, 0, 0, nDragCardWidth, nDragCardHeight);
//--PaintRect(hdcBackGnd, &rect, crBackgnd);
int threedadjust = numcards % nThreedCount == 0;
numunder = CalcApparentCards(numcards);
iwhichcard = (numcards+numtodrag) - numunder - 1;
if(nThreedCount == 1) iwhichcard = 0;
int xoff = calc_offset(xoffset, numunder, numtodrag, numunder);
int yoff = calc_offset(yoffset, numunder, numtodrag, numunder);
parentWnd.PaintCardRgn(hdcBackGnd, 0,0, nDragCardWidth,nDragCardHeight, xpos - xoff,ypos - yoff);
//
// Render the cardstack into the back-buffer. The stack
// has already had the dragcards removed, so just draw
// what is left
//
for(icard = 0; icard < numunder; icard++)
{
Card card = cardstack.cardlist[iwhichcard];
int nCardVal = card.FaceUp() ? card.Idx() : nBackCardIdx;
CardBlt(hdcBackGnd,
xoffset * icard - xoffset*(numunder-numtodrag+threedadjust),
yoffset * icard - yoffset*(numunder-numtodrag+threedadjust),
nCardVal);
iwhichcard++;
}
//
// If there are no cards under this one, just draw the place holder
//
if(numcards == 0)
{
switch(uEmptyImage)
{
case CS_EI_NONE:
//no need! we've already cleared the whole
//back-buffer before the main loop!
//SetRect(&rect, 0, 0, __cardwidth, __cardheight);
//PaintRect(hdcBackGnd, &rect, MAKE_PALETTERGB(crBackgnd));
break;
case CS_EI_SUNK:
DrawCard(hdcBackGnd, 0, 0, __hdcPlaceHolder, __cardwidth, __cardheight);
break;
case CS_EI_CIRC:
case CS_EI_X:
CardBlt(hdc, 0, 0, uEmptyImage);
break;
}
}
//
// now render the drag-cards into the dragcard image
//
PaintRect(hdcDragCard, &rect, crBackgnd);
for(icard = 0; icard < numtodrag; icard++)
{
Card card = dragstack.cardlist[icard];
int nCardVal = card.FaceUp() ? card.Idx() : nBackCardIdx;
CardBlt(hdcDragCard, xoffset * icard, yoffset * icard, nCardVal);
}
}