Hi,
to get sytle information from elements nodes, here is how I make it
(don't know if a simpler way exist) :
1. QI the nsIDOMDocument to get the nsIDOMDocumentView
2. get the nsIDOMAbstractView by calling
nsIDOMDocumentView::GetDefaultView()
3. QI the nsIDOMAbstractView to get the nsIDOMViewCSS
4. QI the nsIDOMNode you want to get the sytle to get the nsIDOMElement
it refers to
5. get the nsIDOMCSSStyleDeclaration by calling the
nsIDOMViewCSS::GetComputedStyle() method
6. call the nsIDOMCSSStyleDeclaration::GetPropertyValue() to get the
sytle information you want !
Olivier
Here is my code snippet
nsCOMPtr<nsIDOMDocument> doc = 0;
nsCOMPtr<nsIDOMDocumentView> dv = 0;
nsCOMPtr<nsIDOMViewCSS> view = 0;
nsCOMPtr<nsIDOMElement> element;
nsIDOMCSSStyleDeclaration *style;
nsString prop_value;
nsresult rv;
rv = NS_STATIC_CAST(nsIDOMNode *,
N)->GetOwnerDocument(getter_AddRefs(doc));
if( NS_SUCCEEDED(rv) && doc ) {
nsCOMPtr<nsIDOMDocumentView> dom_view =
do_QueryInterface(doc, &rv);
if( NS_SUCCEEDED(rv) && dom_view ) {
nsCOMPtr<nsIDOMAbstractView> abtract_view = 0;
rv =
dom_view->GetDefaultView(getter_AddRefs(abtract_view));
if( NS_SUCCEEDED(rv) && abtract_view ) {
view = do_QueryInterface(abtract_view,
&rv);
element =
do_QueryInterface(NS_STATIC_CAST(nsIDOMNode *, N));
if( NS_SUCCEEDED(rv) && view && element ) {
rv =
view->GetComputedStyle(element, EmptyString(), &style);
if( NS_SUCCEEDED(rv) && style ) {
for(unsigned int i=0;
i<count; ++i) {
rv =
style->GetPropertyValue(
NS_ConvertASCIItoUTF16(properties[i].c_str()),
prop_value);
if(
NS_SUCCEEDED(rv) ) {
values[i] = NS_ConvertUTF16toUTF8(prop_value).get();
}
}
return OK;
}
}
}
}
}
Emil Wikström wrote:
> Hi all,
>
> How can I get DOM layout information from my embedded browser?
>
> I need stuff like with, height & offsets from document and elements.
>
> Thx
> /Emil
>
>
>
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