void CScrollerView::dragval(CDrawContext *dstcon, CPoint &where)
{
CPoint ref = where;
float old = mParam->GetVal();
bool allow = false; // need to drag a bit before edit
int d;
while(1)
{
long button = dstcon->getMouseButtons();
if (!(button & kLButton))
{
break;
}
dstcon->getMouseLocation(where);
d = mVert ? ref.y-where.y : where.x-ref.x;
if(allow==false)
{
if(d<-2 || d>2)
{
allow = true;
ref = where;
}
}
else
{
mParam->SetVal(old+d, NFLG_ALL);
}
if(mFrame)
mFrame->doIdleStuff();
}
}
void CScrollerView::mouse(CDrawContext *dstcon, CPoint &where)
{
long button = dstcon->getMouseButtons();
if (!(button & kLButton) || !mParam)
{
return;
}
// see whether to set the default value
if(button == (kControl|kLButton))
{
mParam->SetVal(mParam->mDef, NFLG_ALL);
return;
}
if(mDisplayMouse)
{
// this event is sent by the attached display
mDisplayMouse = false;
bool vert=mVert;
mVert = true;
dragval(dstcon,where);
mVert = vert;
}
else
{
// this event is from our own area, so get the hitmap and see whats to do
long dsplw = mHitmap->getWidth();
long dsplh = mHitmap->getHeight();
CPoint cp = CPoint(0,0);
CRect cr = CRect(0,0,dsplw,dsplh);
COffscreenContext *hitmap = new COffscreenContext(mFrame,dsplw,dsplh);
mHitmap->draw(hitmap, cr, cp);
//mHitmap->drawAlphaBlend(dstcon, size, cp);
where.offset(-size.left, -size.top);
CColor cl = hitmap->getPoint(where);
delete hitmap;
if(cl==kGreenCColor)
{
mParam->StepVal(1, NFLG_ALL);
}
else if(cl==kRedCColor)
{
mParam->StepVal(-1, NFLG_ALL);
}
else if(cl==kWhiteCColor)
{
dragval(dstcon,where);
}
}
}
long CScrollerView::notify(CView *sender, const char *message)
{
switch((int)message)
{
case VNTF_MOUSE: // next ::mouse() is an alien
mDisplayMouse = true;
break;
default:
int in;
sscanf(message,"%i",&in);
mParam->SetVal((float)in,NFLG_ALL);
}
return 0;
}
