NS_IMETHODIMP
BoxObject::GetWidth(int32_t* aResult)
{
nsIntRect rect;
GetOffsetRect(rect);
*aResult = rect.width;
return NS_OK;
}
NS_IMETHODIMP
BoxObject::GetHeight(int32_t* aResult)
{
nsIntRect rect;
GetOffsetRect(rect);
*aResult = rect.height;
return NS_OK;
}
NS_IMETHODIMP
nsBoxObject::GetY(PRInt32* aResult)
{
nsIntRect rect;
GetOffsetRect(rect);
*aResult = rect.y;
return NS_OK;
}
NS_IMETHODIMP
nsBoxObject::GetHeight(PRInt32* aResult)
{
nsRect rect;
GetOffsetRect(rect);
*aResult = rect.height;
return NS_OK;
}
NS_IMETHODIMP
nsBoxObject::GetWidth(PRInt32* aResult)
{
nsRect rect;
GetOffsetRect(rect);
*aResult = rect.width;
return NS_OK;
}
/* void scrollToElement (in nsIDOMElement child); */
NS_IMETHODIMP nsScrollBoxObject::ScrollToElement(nsIDOMElement *child)
{
NS_ENSURE_ARG_POINTER(child);
nsIScrollableView* scrollableView = GetScrollableView();
if (!scrollableView)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIPresShell> shell = GetPresShell(PR_FALSE);
if (!shell) {
return NS_ERROR_UNEXPECTED;
}
nsIFrame* scrolledBox = GetScrolledBox(this);
if (!scrolledBox)
return NS_ERROR_FAILURE;
nsRect rect, crect;
nsCOMPtr<nsIDOMDocument> doc;
child->GetOwnerDocument(getter_AddRefs(doc));
nsCOMPtr<nsIDOMNSDocument> nsDoc(do_QueryInterface(doc));
if(!nsDoc)
return NS_ERROR_UNEXPECTED;
nsCOMPtr<nsIBoxObject> childBoxObject;
nsDoc->GetBoxObjectFor(child, getter_AddRefs(childBoxObject));
if(!childBoxObject)
return NS_ERROR_UNEXPECTED;
PRInt32 x,y;
childBoxObject->GetX(&x);
childBoxObject->GetY(&y);
// get the twips rectangle from the boxobject (which has pixels)
rect.x = nsPresContext::CSSPixelsToAppUnits(x);
rect.y = nsPresContext::CSSPixelsToAppUnits(y);
// TODO: make sure the child is inside the box
// get our current info
nsPoint cp;
scrollableView->GetScrollPosition(cp.x,cp.y);
nsIntRect prect;
GetOffsetRect(prect);
crect = nsIntRect::ToAppUnits(prect, nsPresContext::AppUnitsPerCSSPixel());
nscoord newx=cp.x, newy=cp.y;
// we only scroll in the direction of the scrollbox orientation
// always scroll to left or top edge of child element
if (scrolledBox->IsHorizontal()) {
newx = rect.x - crect.x;
} else {
newy = rect.y - crect.y;
}
// scroll away
return scrollableView->ScrollTo(newx, newy, 0);
}
/* void ensureElementIsVisible (in nsIDOMElement child); */
NS_IMETHODIMP nsScrollBoxObject::EnsureElementIsVisible(nsIDOMElement *child)
{
NS_ENSURE_ARG_POINTER(child);
// Start with getting info about the child, since that will flush
// layout and possibly destroy scrollable views, presshells, etc.
nsCOMPtr<nsIDOMDocument> doc;
// XXXbz sXBL/XBL2 issue -- which document?
child->GetOwnerDocument(getter_AddRefs(doc));
nsCOMPtr<nsIDOMNSDocument> nsDoc(do_QueryInterface(doc));
if(!nsDoc)
return NS_ERROR_UNEXPECTED;
nsCOMPtr<nsIBoxObject> childBoxObject;
nsDoc->GetBoxObjectFor(child, getter_AddRefs(childBoxObject));
if(!childBoxObject)
return NS_ERROR_UNEXPECTED;
PRInt32 x, y, width, height;
childBoxObject->GetX(&x);
childBoxObject->GetY(&y);
childBoxObject->GetWidth(&width);
childBoxObject->GetHeight(&height);
nsIScrollableView* scrollableView = GetScrollableView();
if (!scrollableView)
return NS_ERROR_FAILURE;
nsIFrame* scrolledBox = GetScrolledBox(this);
if (!scrolledBox)
return NS_ERROR_FAILURE;
nsRect rect, crect;
// get the twips rectangle from the boxobject (which has pixels)
rect.x = nsPresContext::CSSPixelsToAppUnits(x);
rect.y = nsPresContext::CSSPixelsToAppUnits(y);
rect.width = nsPresContext::CSSPixelsToAppUnits(width);
rect.height = nsPresContext::CSSPixelsToAppUnits(height);
// TODO: make sure the child is inside the box
// get our current info
nsPoint cp;
scrollableView->GetScrollPosition(cp.x,cp.y);
nsIntRect prect;
GetOffsetRect(prect);
crect = nsIntRect::ToAppUnits(prect, nsPresContext::AppUnitsPerCSSPixel());
nscoord newx=cp.x, newy=cp.y;
// we only scroll in the direction of the scrollbox orientation
if (scrolledBox->IsHorizontal()) {
if ((rect.x - crect.x) + rect.width > cp.x + crect.width) {
newx = cp.x + (((rect.x - crect.x) + rect.width)-(cp.x + crect.width));
} else if (rect.x - crect.x < cp.x) {
newx = rect.x - crect.x;
}
} else {
if ((rect.y - crect.y) + rect.height > cp.y + crect.height) {
newy = cp.y + (((rect.y - crect.y) + rect.height)-(cp.y + crect.height));
} else if (rect.y - crect.y < cp.y) {
newy = rect.y - crect.y;
}
}
// scroll away
return scrollableView->ScrollTo(newx, newy, 0);
}
