FocusCandidate::FocusCandidate(Node* node, FocusDirection direction)
: visibleNode(0)
, focusableNode(0)
, enclosingScrollableBox(0)
, distance(maxDistance())
, alignment(None)
, isOffscreen(true)
, isOffscreenAfterScrolling(true)
{
ASSERT(node);
ASSERT(node->isElementNode());
if (isHTMLAreaElement(node)) {
HTMLAreaElement* area = toHTMLAreaElement(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);
}
void ImagePainter::paintAreaElementFocusRing(PaintInfo& paintInfo)
{
Document& document = m_renderImage.document();
if (document.printing() || !document.frame()->selection().isFocusedAndActive())
return;
Element* focusedElement = document.focusedElement();
if (!isHTMLAreaElement(focusedElement))
return;
HTMLAreaElement& areaElement = toHTMLAreaElement(*focusedElement);
if (areaElement.imageElement() != m_renderImage.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(&m_renderImage);
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(m_renderImage.absoluteContentBox());
paintInfo.context->drawFocusRing(path, outlineWidth,
areaElementStyle->outlineOffset(),
m_renderImage.resolveColor(areaElementStyle, CSSPropertyOutlineColor));
}
void ImagePainter::paintAreaElementFocusRing(const PaintInfo& paintInfo,
const LayoutPoint& paintOffset) {
Document& document = m_layoutImage.document();
if (paintInfo.isPrinting() ||
!document.frame()->selection().isFocusedAndActive())
return;
Element* focusedElement = document.focusedElement();
if (!isHTMLAreaElement(focusedElement))
return;
HTMLAreaElement& areaElement = toHTMLAreaElement(*focusedElement);
if (areaElement.imageElement() != m_layoutImage.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
// LayoutTheme::themeDrawsFocusRing here.
const ComputedStyle& areaElementStyle = *areaElement.ensureComputedStyle();
// If the outline width is 0 we want to avoid drawing anything even if we
// don't use the value directly.
if (!areaElementStyle.outlineWidth())
return;
Path path = areaElement.getPath(&m_layoutImage);
if (path.isEmpty())
return;
LayoutPoint adjustedPaintOffset = paintOffset;
adjustedPaintOffset.moveBy(m_layoutImage.location());
path.translate(FloatSize(adjustedPaintOffset.x(), adjustedPaintOffset.y()));
if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(
paintInfo.context, m_layoutImage, DisplayItem::kImageAreaFocusRing))
return;
LayoutRect focusRect = m_layoutImage.contentBoxRect();
focusRect.moveBy(adjustedPaintOffset);
LayoutObjectDrawingRecorder drawingRecorder(paintInfo.context, m_layoutImage,
DisplayItem::kImageAreaFocusRing,
focusRect);
// FIXME: Clip path instead of context when Skia pathops is ready.
// https://crbug.com/251206
paintInfo.context.save();
paintInfo.context.clip(pixelSnappedIntRect(focusRect));
paintInfo.context.drawFocusRing(
path, areaElementStyle.getOutlineStrokeWidthForFocusRing(),
areaElementStyle.outlineOffset(),
m_layoutImage.resolveColor(areaElementStyle, CSSPropertyOutlineColor));
paintInfo.context.restore();
}
bool areElementsOnSameLine(const FocusCandidate& firstCandidate, const FocusCandidate& secondCandidate)
{
if (firstCandidate.isNull() || secondCandidate.isNull())
return false;
if (!firstCandidate.visibleNode->renderer() || !secondCandidate.visibleNode->renderer())
return false;
if (!firstCandidate.rect.intersects(secondCandidate.rect))
return false;
if (isHTMLAreaElement(firstCandidate.focusableNode) || isHTMLAreaElement(secondCandidate.focusableNode))
return false;
if (!firstCandidate.visibleNode->renderer()->isRenderInline() || !secondCandidate.visibleNode->renderer()->isRenderInline())
return false;
if (firstCandidate.visibleNode->renderer()->containingBlock() != secondCandidate.visibleNode->renderer()->containingBlock())
return false;
return true;
}
void ImagePainter::paintAreaElementFocusRing(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
// TODO(wangxianzhu): In other places, we just paint focus ring if outline style is auto.
// We should also do that here to keep consistency.
Document& document = m_layoutImage.document();
if (paintInfo.isPrinting() || !document.frame()->selection().isFocusedAndActive())
return;
Element* focusedElement = document.focusedElement();
if (!isHTMLAreaElement(focusedElement))
return;
HTMLAreaElement& areaElement = toHTMLAreaElement(*focusedElement);
if (areaElement.imageElement() != m_layoutImage.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 LayoutTheme::themeDrawsFocusRing here.
Path path = areaElement.computePath(&m_layoutImage);
if (path.isEmpty())
return;
const ComputedStyle& areaElementStyle = *areaElement.ensureComputedStyle();
int outlineWidth = areaElementStyle.outlineWidth();
if (!outlineWidth)
return;
if (LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, m_layoutImage, paintInfo.phase, paintOffset))
return;
IntRect focusRect = m_layoutImage.absoluteContentBox();
LayoutObjectDrawingRecorder drawingRecorder(*paintInfo.context, m_layoutImage, paintInfo.phase, focusRect, paintOffset);
// FIXME: Clip path instead of context when Skia pathops is ready.
// https://crbug.com/251206
paintInfo.context->save();
paintInfo.context->clip(focusRect);
paintInfo.context->drawFocusRing(path, outlineWidth,
areaElementStyle.outlineOffset(),
m_layoutImage.resolveColor(areaElementStyle, CSSPropertyOutlineColor));
paintInfo.context->restore();
}
bool elementHasLegalLinkAttribute(const Element* element, const QualifiedName& attrName)
{
if (attrName == srcAttr)
return element->hasTagName(imgTag) || element->hasTagName(scriptTag) || element->hasTagName(iframeTag) || element->hasTagName(frameTag) || (element->hasTagName(inputTag) && toHTMLInputElement(element)->isImageButton());
if (attrName == hrefAttr)
return element->hasTagName(linkTag) || isHTMLAnchorElement(element) || isHTMLAreaElement(element);
if (attrName == actionAttr)
return element->hasTagName(formTag);
if (attrName == backgroundAttr)
return element->hasTagName(bodyTag) || isHTMLTableElement(element) || element->hasTagName(trTag) || element->hasTagName(tdTag);
if (attrName == citeAttr)
return element->hasTagName(blockquoteTag) || element->hasTagName(qTag) || element->hasTagName(delTag) || element->hasTagName(insTag);
if (attrName == classidAttr || attrName == dataAttr)
return element->hasTagName(objectTag);
if (attrName == codebaseAttr)
return element->hasTagName(objectTag) || element->hasTagName(appletTag);
return false;
}
void ImagePainter::paintAreaElementFocusRing(const PaintInfo& paintInfo)
{
Document& document = m_layoutImage.document();
if (document.printing() || !document.frame()->selection().isFocusedAndActive())
return;
Element* focusedElement = document.focusedElement();
if (!isHTMLAreaElement(focusedElement))
return;
HTMLAreaElement& areaElement = toHTMLAreaElement(*focusedElement);
if (areaElement.imageElement() != m_layoutImage.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 LayoutTheme::supportsFocusRing here.
Path path = areaElement.computePath(&m_layoutImage);
if (path.isEmpty())
return;
const ComputedStyle& areaElementStyle = *areaElement.ensureComputedStyle();
unsigned short outlineWidth = areaElementStyle.outlineWidth();
if (!outlineWidth)
return;
IntRect focusRect = m_layoutImage.absoluteContentBox();
LayoutObjectDrawingRecorder drawingRecorder(*paintInfo.context, m_layoutImage, paintInfo.phase, focusRect);
if (drawingRecorder.canUseCachedDrawing())
return;
// FIXME: Clip path instead of context when Skia pathops is ready.
// https://crbug.com/251206
paintInfo.context->save();
paintInfo.context->clip(focusRect);
paintInfo.context->drawFocusRing(path, outlineWidth,
areaElementStyle.outlineOffset(),
m_layoutImage.resolveColor(areaElementStyle, CSSPropertyOutlineColor));
paintInfo.context->restore();
}
