void MouseRelatedEvent::computeRelativePosition()
{
Node* targetNode = target() ? target()->toNode() : 0;
if (!targetNode)
return;
// Compute coordinates that are based on the target.
m_layerLocation = m_pageLocation;
m_offsetLocation = m_pageLocation;
// Must have an updated render tree for this math to work correctly.
targetNode->document()->updateStyleIfNeeded();
// Adjust offsetLocation to be relative to the target's position.
if (!isSimulated()) {
if (RenderObject* r = targetNode->renderer()) {
FloatPoint localPos = r->absoluteToLocal(absoluteLocation(), false, true);
m_offsetLocation = roundedLayoutPoint(localPos);
float scaleFactor = 1 / (pageZoomFactor(this) * frameScaleFactor(this));
if (scaleFactor != 1.0f)
m_offsetLocation.scale(scaleFactor, scaleFactor);
}
}
// Adjust layerLocation to be relative to the layer.
// FIXME: We're pretty sure this is the wrong definition of "layer."
// Our RenderLayer is a more modern concept, and layerX/Y is some
// other notion about groups of elements (left over from the Netscape 4 days?);
// we should test and fix this.
Node* n = targetNode;
while (n && !n->renderer())
n = n->parentNode();
RenderLayer* layer;
if (n && (layer = n->renderer()->enclosingLayer())) {
layer->updateLayerPosition();
for (; layer; layer = layer->parent()) {
m_layerLocation -= toSize(layer->location());
}
}
m_hasCachedRelativePosition = true;
}
void MouseRelatedEvent::computeRelativePosition()
{
Node* targetNode = target() ? target()->toNode() : 0;
if (!targetNode)
return;
// Compute coordinates that are based on the target.
m_layerLocation = m_pageLocation;
m_offsetLocation = m_pageLocation;
// Must have an updated render tree for this math to work correctly.
targetNode->document().updateLayoutIgnorePendingStylesheets();
// Adjust offsetLocation to be relative to the target's position.
if (RenderObject* r = targetNode->renderer()) {
FloatPoint localPos = r->absoluteToLocal(absoluteLocation(), UseTransforms);
m_offsetLocation = roundedLayoutPoint(localPos);
float scaleFactor = 1 / (pageZoomFactor(this) * frameScaleFactor(this));
if (scaleFactor != 1.0f)
m_offsetLocation.scale(scaleFactor, scaleFactor);
}
// Adjust layerLocation to be relative to the layer.
// FIXME: event.layerX and event.layerY are poorly defined,
// and probably don't always correspond to RenderLayer offsets.
// https://bugs.webkit.org/show_bug.cgi?id=21868
Node* n = targetNode;
while (n && !n->renderer())
n = n->parentNode();
RenderLayer* layer;
if (n && (layer = n->renderer()->enclosingLayer())) {
for (; layer; layer = layer->parent()) {
m_layerLocation -= toLayoutSize(layer->location());
}
}
m_hasCachedRelativePosition = true;
}
void MouseRelatedEvent::computePageLocation()
{
float scaleFactor = pageZoomFactor(this) * frameScaleFactor(this);
setAbsoluteLocation(roundedLayoutPoint(FloatPoint(pageX() * scaleFactor, pageY() * scaleFactor)));
}
