ScrollView* Widget::root() const
{
const Widget* top = this;
while (top->parent())
top = top->parent();
if (top->isFrameView())
return const_cast<ScrollView*>(toScrollView(top));
return nullptr;
}
static IntSize widgetInputEventsOffset(const Widget* widget)
{
if (!widget)
return IntSize();
ScrollView* rootView = toScrollView(widget->root());
if (!rootView)
return IntSize();
return rootView->inputEventsOffsetForEmulation();
}
static float widgetInputEventsScaleFactor(const Widget* widget)
{
if (!widget)
return 1;
ScrollView* rootView = toScrollView(widget->root());
if (!rootView)
return 1;
return rootView->inputEventsScaleFactor();
}
static void moveWidgetToParentSoon(Widget* child, FrameView* parent)
{
if (!s_updateSuspendCount) {
if (parent)
parent->addChild(child);
else
toScrollView(child->parent())->removeChild(child);
return;
}
widgetNewParentMap().set(child, parent);
}
static void updateWebMouseEventFromWebCoreMouseEvent(const MouseRelatedEvent& event, const Widget& widget, const WebCore::RenderObject& renderObject, WebMouseEvent& webEvent)
{
webEvent.timeStampSeconds = event.timeStamp() / millisPerSecond;
webEvent.modifiers = getWebInputModifiers(event);
ScrollView* view = toScrollView(widget.parent());
IntPoint windowPoint = IntPoint(event.absoluteLocation().x(), event.absoluteLocation().y());
if (view)
windowPoint = view->contentsToWindow(windowPoint);
webEvent.globalX = event.screenX();
webEvent.globalY = event.screenY();
webEvent.windowX = windowPoint.x();
webEvent.windowY = windowPoint.y();
IntPoint localPoint = convertAbsoluteLocationForRenderObject(event.absoluteLocation(), renderObject);
webEvent.x = localPoint.x();
webEvent.y = localPoint.y();
}
// Generate a synthetic WebMouseEvent given a TouchEvent (eg. for emulating a mouse
// with touch input for plugins that don't support touch input).
WebMouseEventBuilder::WebMouseEventBuilder(const Widget* widget, const WebCore::RenderObject* renderObject, const TouchEvent& event)
{
if (!event.touches())
return;
if (event.touches()->length() != 1) {
if (event.touches()->length() || event.type() != EventTypeNames::touchend || !event.changedTouches() || event.changedTouches()->length() != 1)
return;
}
const Touch* touch = event.touches()->length() == 1 ? event.touches()->item(0) : event.changedTouches()->item(0);
if (touch->identifier())
return;
if (event.type() == EventTypeNames::touchstart)
type = MouseDown;
else if (event.type() == EventTypeNames::touchmove)
type = MouseMove;
else if (event.type() == EventTypeNames::touchend)
type = MouseUp;
else
return;
timeStampSeconds = event.timeStamp() / millisPerSecond;
modifiers = getWebInputModifiers(event);
// The mouse event co-ordinates should be generated from the co-ordinates of the touch point.
ScrollView* view = toScrollView(widget->parent());
IntPoint windowPoint = IntPoint(touch->absoluteLocation().x(), touch->absoluteLocation().y());
if (view)
windowPoint = view->contentsToWindow(windowPoint);
globalX = touch->screenX();
globalY = touch->screenY();
windowX = windowPoint.x();
windowY = windowPoint.y();
button = WebMouseEvent::ButtonLeft;
modifiers |= WebInputEvent::LeftButtonDown;
clickCount = (type == MouseDown || type == MouseUp);
IntPoint localPoint = convertAbsoluteLocationForRenderObject(touch->absoluteLocation(), *renderObject);
x = localPoint.x();
y = localPoint.y();
}
RenderWidget::UpdateSuspendScope::~UpdateSuspendScope()
{
ASSERT(s_updateSuspendCount > 0);
if (s_updateSuspendCount == 1) {
WidgetToParentMap map;
widgetNewParentMap().swap(map);
WidgetToParentMap::iterator end = map.end();
for (WidgetToParentMap::iterator it = map.begin(); it != end; ++it) {
Widget* child = it->key.get();
ScrollView* currentParent = toScrollView(child->parent());
FrameView* newParent = it->value;
if (newParent != currentParent) {
if (currentParent)
currentParent->removeChild(child);
if (newParent)
newParent->addChild(child);
}
}
}
--s_updateSuspendCount;
}
void Scrollbar::removeFromParent()
{
if (parent())
toScrollView(parent())->removeChild(this);
}
bool Scrollbar::isScrollViewScrollbar() const
{
return parent() && parent()->isFrameView() && toScrollView(parent())->isScrollViewScrollbar(this);
}
ScrollView* Scrollbar::rootScrollView() const
{
return toScrollView(root());
}
ScrollView* Scrollbar::parentScrollView() const
{
return toScrollView(parent());
}