//---------------------------------------------------------------------------
void TJS_INTF_METHOD tTVPLayerManager::RequestInvalidation(const tTVPRect &r)
{
// called by the owner window to notify window surface is invalidated by
// the system or user.
if(!Primary) return;
tTVPRect ur;
tTVPRect cr(0, 0, Primary->Rect.get_width(), Primary->Rect.get_height());
if(TVPIntersectRect(&ur, r, cr))
{
AddUpdateRegion(ur);
}
}
//---------------------------------------------------------------------------
void tTVPScrollDivisibleData::Blend(tTVPScrollTransFrom from,
tTVPScrollTransStay stay, tjs_int phase)
{
// scroll the image
tjs_int imagewidth;
tjs_int imageheight;
Src1->GetWidth(&imagewidth);
Src1->GetHeight(&imageheight);
tjs_int src1left = 0;
tjs_int src1top = 0;
tjs_int src2left = 0;
tjs_int src2top = 0;
switch(from)
{
case sttLeft:
if(stay == ststNoStay)
src1left = phase, src2left = phase - imagewidth;
else if(stay == ststStayDest)
src2left = phase - imagewidth;
else if(stay == ststStaySrc)
src1left = phase;
break;
case sttTop:
if(stay == ststNoStay)
src1top = phase, src2top = phase - imageheight;
else if(stay == ststStayDest)
src2top = phase - imageheight;
else if(stay == ststStaySrc)
src1top = phase;
break;
case sttRight:
if(stay == ststNoStay)
src1left = -phase, src2left = imagewidth - phase;
else if(stay == ststStayDest)
src2left = imagewidth - phase;
else if(stay == ststStaySrc)
src1left = -phase;
break;
case sttBottom:
if(stay == ststNoStay)
src1top = -phase, src2top = imageheight - phase;
else if(stay == ststStayDest)
src2top = imageheight - phase;
else if(stay == ststStaySrc)
src1top = -phase;
break;
}
tTVPRect rdest(Left, Top, Width+Left, Height+Top);
tTVPRect rs1(src1left, src1top, imagewidth + src1left, imageheight + src1top);
tTVPRect rs2(src2left, src2top, imagewidth + src2left, imageheight + src2top);
if(stay == ststNoStay)
{
// both layers have no priority than another.
// nothing to do.
}
else if(stay == ststStayDest)
{
// Src2 has priority.
if(from == sttLeft || from == sttRight)
{
if(rs2.right >= rs1.left && rs2.right < rs1.right)
rs1.left = rs2.right;
if(rs2.left >= rs1.left && rs2.left < rs1.right)
rs1.right = rs2.left;
}
else
{
if(rs2.bottom >= rs1.top && rs2.bottom < rs1.bottom)
rs1.top = rs2.bottom;
if(rs2.top >= rs1.top && rs2.top < rs1.bottom)
rs1.bottom = rs2.top;
}
}
else if(stay == ststStaySrc)
{
// Src1 has priority.
if(from == sttLeft || from == sttRight)
{
if(rs1.right >= rs2.left && rs1.right < rs2.right)
rs2.left = rs1.right;
if(rs1.left >= rs2.left && rs1.left < rs2.right)
rs2.right = rs1.left;
}
else
{
if(rs1.bottom >= rs2.top && rs1.bottom < rs2.bottom)
rs2.top = rs1.bottom;
if(rs1.top >= rs2.top && rs1.top < rs2.bottom)
rs2.bottom = rs1.top;
}
}
// copy to destination image
tTVPRect d;
if(TVPIntersectRect(&d, rdest, rs1))
{
tjs_int dl = d.left - Left + DestLeft, dt = d.top - Top + DestTop;
d.add_offsets(-src1left, -src1top);
TVPSLPCopyRect(Dest, dl, dt, Src1, d);
}
if(TVPIntersectRect(&d, rdest, rs2))
{
tjs_int dl = d.left - Left + DestLeft, dt = d.top - Top + DestTop;
d.add_offsets(-src2left, -src2top);
TVPSLPCopyRect(Dest, dl, dt, Src2, d);
}
}
