FocusCandidate::FocusCandidate(Node* node, FocusDirection direction)
: visibleNode(0)
, focusableNode(0)
, enclosingScrollableBox(0)
, distance(maxDistance())
, parentDistance(maxDistance())
, alignment(None)
, parentAlignment(None)
, isOffscreen(true)
, isOffscreenAfterScrolling(true)
{
ASSERT(node);
ASSERT(node->isElementNode());
if (node->hasTagName(HTMLNames::areaTag)) {
HTMLAreaElement* area = static_cast<HTMLAreaElement*>(node);
HTMLImageElement* image = area->imageElement();
if (!image || !image->renderer())
return;
visibleNode = image;
rect = virtualRectForAreaElementAndDirection(area, direction);
} else {
if (!node->renderer())
return;
visibleNode = node;
rect = nodeRectInAbsoluteCoordinates(node, true /* ignore border */);
}
focusableNode = node;
isOffscreen = hasOffscreenRect(visibleNode);
isOffscreenAfterScrolling = hasOffscreenRect(visibleNode, direction);
}
// This method filters what element will get tap-highlight'ed or not. To start with,
// we are going to highlight links (anchors with a valid href element), and elements
// whose tap highlight color value is different than the default value.
static Element* elementForTapHighlight(Element* elementUnderFatFinger)
{
// Do not bail out right way here if there element does not have a renderer.
// It is the casefor <map> (descendent of <area>) elements. The associated <image>
// element actually has the renderer.
if (elementUnderFatFinger->renderer()) {
Color tapHighlightColor = elementUnderFatFinger->renderStyle()->tapHighlightColor();
if (tapHighlightColor != RenderTheme::defaultTheme()->platformTapHighlightColor())
return elementUnderFatFinger;
}
bool isArea = elementUnderFatFinger->hasTagName(HTMLNames::areaTag);
Node* linkNode = elementUnderFatFinger->enclosingLinkEventParentOrSelf();
if (!linkNode || !linkNode->isHTMLElement() || (!linkNode->renderer() && !isArea))
return 0;
ASSERT(linkNode->isLink());
// FatFingers class selector ensure only anchor with valid href attr value get here.
// It includes empty hrefs.
Element* highlightCandidateElement = static_cast<Element*>(linkNode);
if (!isArea)
return highlightCandidateElement;
HTMLAreaElement* area = static_cast<HTMLAreaElement*>(highlightCandidateElement);
HTMLImageElement* image = area->imageElement();
if (image && image->renderer())
return image;
return 0;
}
LayoutRect virtualRectForAreaElementAndDirection(HTMLAreaElement& area, FocusType type)
{
ASSERT(area.imageElement());
// Area elements tend to overlap more than other focusable elements. We flatten the rect of the area elements
// to minimize the effect of overlapping areas.
LayoutRect rect = virtualRectForDirection(type, rectToAbsoluteCoordinates(area.document().frame(), area.computeRect(area.imageElement()->renderer())), 1);
return rect;
}
void RenderImage::paintAreaElementFocusRing(PaintInfo& paintInfo)
{
Document* document = this->document();
if (document->printing() || !document->frame()->selection()->isFocusedAndActive())
return;
if (paintInfo.context->paintingDisabled() && !paintInfo.context->updatingControlTints())
return;
Element* focusedElement = document->focusedElement();
if (!focusedElement || !isHTMLAreaElement(focusedElement))
return;
HTMLAreaElement* areaElement = toHTMLAreaElement(focusedElement);
if (areaElement->imageElement() != node())
return;
// Even if the theme handles focus ring drawing for entire elements, it won't do it for
// an area within an image, so we don't call RenderTheme::supportsFocusRing here.
Path path = areaElement->computePath(this);
if (path.isEmpty())
return;
RenderStyle* areaElementStyle = areaElement->computedStyle();
unsigned short outlineWidth = areaElementStyle->outlineWidth();
if (!outlineWidth)
return;
// FIXME: Clip path instead of context when Skia pathops is ready.
// https://crbug.com/251206
GraphicsContextStateSaver savedContext(*paintInfo.context);
paintInfo.context->clip(absoluteContentBox());
paintInfo.context->drawFocusRing(path, outlineWidth,
areaElementStyle->outlineOffset(),
resolveColor(areaElementStyle, CSSPropertyOutlineColor));
}
void RenderImage::paintAreaElementFocusRing(PaintInfo& paintInfo)
{
Document* document = this->document();
if (document->printing() || !document->frame()->selection()->isFocusedAndActive())
return;
if (paintInfo.context->paintingDisabled() && !paintInfo.context->updatingControlTints())
return;
Node* focusedNode = document->focusedNode();
if (!focusedNode || !focusedNode->hasTagName(areaTag))
return;
HTMLAreaElement* areaElement = static_cast<HTMLAreaElement*>(focusedNode);
if (areaElement->imageElement() != node())
return;
// Even if the theme handles focus ring drawing for entire elements, it won't do it for
// an area within an image, so we don't call RenderTheme::supportsFocusRing here.
Path path = areaElement->computePath(this);
if (path.isEmpty())
return;
// FIXME: Do we need additional code to clip the path to the image's bounding box?
RenderStyle* areaElementStyle = areaElement->computedStyle();
unsigned short outlineWidth = areaElementStyle->outlineWidth();
if (!outlineWidth)
return;
paintInfo.context->drawFocusRing(path, outlineWidth,
areaElementStyle->outlineOffset(),
areaElementStyle->visitedDependentColor(CSSPropertyOutlineColor));
}
bool FocusController::advanceFocusDirectionally(FocusDirection direction, KeyboardEvent* event)
{
Frame* curFrame = focusedOrMainFrame();
ASSERT(curFrame);
Document* focusedDocument = curFrame->document();
if (!focusedDocument)
return false;
Node* focusedNode = focusedDocument->focusedNode();
Node* container = focusedDocument;
if (container->isDocumentNode())
static_cast<Document*>(container)->updateLayoutIgnorePendingStylesheets();
// Figure out the starting rect.
LayoutRect startingRect;
if (focusedNode) {
if (!hasOffscreenRect(focusedNode)) {
container = scrollableEnclosingBoxOrParentFrameForNodeInDirection(direction, focusedNode);
startingRect = nodeRectInAbsoluteCoordinates(focusedNode, true /* ignore border */);
} else if (focusedNode->hasTagName(areaTag)) {
HTMLAreaElement* area = static_cast<HTMLAreaElement*>(focusedNode);
container = scrollableEnclosingBoxOrParentFrameForNodeInDirection(direction, area->imageElement());
startingRect = virtualRectForAreaElementAndDirection(area, direction);
}
}
bool consumed = false;
do {
consumed = advanceFocusDirectionallyInContainer(container, startingRect, direction, event);
startingRect = nodeRectInAbsoluteCoordinates(container, true /* ignore border */);
container = scrollableEnclosingBoxOrParentFrameForNodeInDirection(direction, container);
if (container && container->isDocumentNode())
static_cast<Document*>(container)->updateLayoutIgnorePendingStylesheets();
} while (!consumed && container);
return consumed;
}
void RenderImage::readyWRATHWidgetAreaElementFocusRing(PaintedWidgetsOfWRATHHandle& handle, PaintInfoOfWRATH& paintInfo)
{
RenderImage_ReadyWRATHWidgetAreaElementFocusRing *d(RenderImage_ReadyWRATHWidgetAreaElementFocusRing::object(this, handle));
ContextOfWRATH::AutoPushNode autoPushRoot(paintInfo.wrath_context, d->m_root_node);
if (d->m_focus_ring.widget())
d->m_focus_ring.widget()->visible(false);
Document* document = this->document();
if (document->printing() || !document->frame()->selection()->isFocusedAndActive())
return;
/*
if (paintInfo.context->paintingDisabled() && !paintInfo.context->updatingControlTints())
return;
*/
Node* focusedNode = document->focusedNode();
if (!focusedNode || !focusedNode->hasTagName(areaTag))
return;
HTMLAreaElement* areaElement = static_cast<HTMLAreaElement*>(focusedNode);
if (areaElement->imageElement() != node())
return;
// Even if the theme handles focus ring drawing for entire elements, it won't do it for
// an area within an image, so we don't call RenderTheme::supportsFocusRing here.
Path path = areaElement->computePath(this);
if (path.isEmpty())
return;
// FIXME: Do we need additional code to clip the path to the image's bounding box?
RenderStyle* areaElementStyle = areaElement->computedStyle();
unsigned short outlineWidth = areaElementStyle->outlineWidth();
if (!outlineWidth)
return;
if (!d->m_focus_ring_shape || d->m_focus_ring_dirty) {
if (!d->m_focus_ring_shape) {
d->m_focus_ring_shape = WRATHNew WRATHShapeF;
}
d->m_focus_ring_shape->clear();
d->m_focus_ring_shape->new_outline();
QPainterPath qpath = path.platformPath();
// Skip the first element, it is not needed because it's the same as the last
for (int i = 1; i < qpath.elementCount(); ++i) {
const QPainterPath::Element & cur = qpath.elementAt(i);
switch (cur.type) {
case QPainterPath::MoveToElement: {
ASSERT_NOT_REACHED();
break;
}
case QPainterPath::LineToElement: {
QPointF p(cur);
d->m_focus_ring_shape->current_outline() << vec2(p.x(), p.y());
break;
}
case QPainterPath::CurveToElement: {
QPainterPath::Element c1 = qpath.elementAt(i+1);
QPainterPath::Element c2 = qpath.elementAt(i+2);
ASSERT(c1.type == QPainterPath::CurveToDataElement);
ASSERT(c2.type == QPainterPath::CurveToDataElement);
QPointF p1(cur);
QPointF p2(c1);
QPointF p3(c2);
d->m_focus_ring_shape->current_outline() <<
WRATHOutlineF::control_point(vec2(p1.x(), p1.y())) <<
WRATHOutlineF::control_point(vec2(p2.x(), p2.y())) <<
vec2(p3.x(), p3.y());
i += 2;
break;
}
case QPainterPath::CurveToDataElement: {
ASSERT_NOT_REACHED();
break;
}
}
}
}
vec4 c;
Color wc = areaElementStyle->visitedDependentColor(CSSPropertyOutlineColor);
wc.getRGBA(c.x(), c.y(), c.z(), c.w());
paintInfo.wrath_context->add_stroked_shape(d->m_focus_ring,
WRATHWidgetGenerator::ColorProperties(c),
WRATHWidgetGenerator::shape_value(*d->m_focus_ring_shape),
WRATHWidgetGenerator::StrokingParameters()
.close_outline(true)
.width(outlineWidth)
.stroke_curves(WRATHWidgetGenerator::dashed_stroke));
d->m_focus_ring.widget()->visible(true);
}
