--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/rendering/RenderReplaced.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,362 @@
+/*
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ * Copyright (C) 2000 Dirk Mueller (mueller@kde.org)
+ * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "RenderReplaced.h"
+
+#include "GraphicsContext.h"
+#include "RenderBlock.h"
+#include "RenderLayer.h"
+#include "RenderTheme.h"
+#include "RenderView.h"
+#include "VisiblePosition.h"
+
+using namespace std;
+
+namespace WebCore {
+
+const int cDefaultWidth = 300;
+const int cDefaultHeight = 150;
+
+RenderReplaced::RenderReplaced(Node* node)
+ : RenderBox(node)
+ , m_intrinsicSize(cDefaultWidth, cDefaultHeight)
+{
+ setReplaced(true);
+}
+
+RenderReplaced::RenderReplaced(Node* node, const IntSize& intrinsicSize)
+ : RenderBox(node)
+ , m_intrinsicSize(intrinsicSize)
+{
+ setReplaced(true);
+}
+
+RenderReplaced::~RenderReplaced()
+{
+}
+
+void RenderReplaced::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
+{
+ RenderBox::styleDidChange(diff, oldStyle);
+
+ bool hadStyle = (oldStyle != 0);
+ float oldZoom = hadStyle ? oldStyle->effectiveZoom() : RenderStyle::initialZoom();
+ if (style() && style()->effectiveZoom() != oldZoom)
+ intrinsicSizeChanged();
+}
+
+void RenderReplaced::layout()
+{
+ ASSERT(needsLayout());
+
+ LayoutRepainter repainter(*this, checkForRepaintDuringLayout());
+
+ setHeight(minimumReplacedHeight());
+
+ calcWidth();
+ calcHeight();
+
+ m_overflow.clear();
+ addShadowOverflow();
+
+ repainter.repaintAfterLayout();
+
+ setNeedsLayout(false);
+}
+
+void RenderReplaced::intrinsicSizeChanged()
+{
+ int scaledWidth = static_cast<int>(cDefaultWidth * style()->effectiveZoom());
+ int scaledHeight = static_cast<int>(cDefaultHeight * style()->effectiveZoom());
+ m_intrinsicSize = IntSize(scaledWidth, scaledHeight);
+ setNeedsLayoutAndPrefWidthsRecalc();
+}
+
+void RenderReplaced::paint(PaintInfo& paintInfo, int tx, int ty)
+{
+ if (!shouldPaint(paintInfo, tx, ty))
+ return;
+
+ tx += x();
+ ty += y();
+
+ if (hasBoxDecorations() && (paintInfo.phase == PaintPhaseForeground || paintInfo.phase == PaintPhaseSelection))
+ paintBoxDecorations(paintInfo, tx, ty);
+
+ if (paintInfo.phase == PaintPhaseMask) {
+ paintMask(paintInfo, tx, ty);
+ return;
+ }
+
+ if ((paintInfo.phase == PaintPhaseOutline || paintInfo.phase == PaintPhaseSelfOutline) && style()->outlineWidth())
+ paintOutline(paintInfo.context, tx, ty, width(), height());
+
+ if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection)
+ return;
+
+ if (!paintInfo.shouldPaintWithinRoot(this))
+ return;
+
+ bool drawSelectionTint = selectionState() != SelectionNone && !document()->printing();
+ if (paintInfo.phase == PaintPhaseSelection) {
+ if (selectionState() == SelectionNone)
+ return;
+ drawSelectionTint = false;
+ }
+
+ bool completelyClippedOut = false;
+ if (style()->hasBorderRadius()) {
+ IntRect borderRect = IntRect(tx, ty, width(), height());
+
+ if (borderRect.isEmpty())
+ completelyClippedOut = true;
+ else {
+ // Push a clip if we have a border radius, since we want to round the foreground content that gets painted.
+ paintInfo.context->save();
+
+ IntSize topLeft, topRight, bottomLeft, bottomRight;
+ style()->getBorderRadiiForRect(borderRect, topLeft, topRight, bottomLeft, bottomRight);
+
+ paintInfo.context->addRoundedRectClip(borderRect, topLeft, topRight, bottomLeft, bottomRight);
+ }
+ }
+
+ if (!completelyClippedOut) {
+ paintReplaced(paintInfo, tx, ty);
+
+ if (style()->hasBorderRadius())
+ paintInfo.context->restore();
+ }
+
+ // The selection tint never gets clipped by border-radius rounding, since we want it to run right up to the edges of
+ // surrounding content.
+ if (drawSelectionTint) {
+ IntRect selectionPaintingRect = localSelectionRect();
+ selectionPaintingRect.move(tx, ty);
+ paintInfo.context->fillRect(selectionPaintingRect, selectionBackgroundColor(), style()->colorSpace());
+ }
+}
+
+bool RenderReplaced::shouldPaint(PaintInfo& paintInfo, int& tx, int& ty)
+{
+ if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseOutline && paintInfo.phase != PaintPhaseSelfOutline
+ && paintInfo.phase != PaintPhaseSelection && paintInfo.phase != PaintPhaseMask)
+ return false;
+
+ if (!paintInfo.shouldPaintWithinRoot(this))
+ return false;
+
+ // if we're invisible or haven't received a layout yet, then just bail.
+ if (style()->visibility() != VISIBLE)
+ return false;
+
+ int currentTX = tx + x();
+ int currentTY = ty + y();
+
+ // Early exit if the element touches the edges.
+ int top = currentTY + topVisibleOverflow();
+ int bottom = currentTY + bottomVisibleOverflow();
+ if (isSelected() && m_inlineBoxWrapper) {
+ int selTop = ty + m_inlineBoxWrapper->root()->selectionTop();
+ int selBottom = ty + selTop + m_inlineBoxWrapper->root()->selectionHeight();
+ top = min(selTop, top);
+ bottom = max(selBottom, bottom);
+ }
+
+ int os = 2 * maximalOutlineSize(paintInfo.phase);
+ if (currentTX + leftVisibleOverflow() >= paintInfo.rect.right() + os || currentTX + rightVisibleOverflow() <= paintInfo.rect.x() - os)
+ return false;
+ if (top >= paintInfo.rect.bottom() + os || bottom <= paintInfo.rect.y() - os)
+ return false;
+
+ return true;
+}
+
+void RenderReplaced::calcPrefWidths()
+{
+ ASSERT(prefWidthsDirty());
+
+ int borderAndPadding = borderAndPaddingWidth();
+ int width = calcReplacedWidth(false) + borderAndPadding;
+
+ if (style()->maxWidth().isFixed() && style()->maxWidth().value() != undefinedLength)
+ width = min(width, style()->maxWidth().value() + (style()->boxSizing() == CONTENT_BOX ? borderAndPadding : 0));
+
+ if (style()->width().isPercent() || (style()->width().isAuto() && style()->height().isPercent())) {
+ m_minPrefWidth = 0;
+ m_maxPrefWidth = width;
+ } else
+ m_minPrefWidth = m_maxPrefWidth = width;
+
+ setPrefWidthsDirty(false);
+}
+
+int RenderReplaced::lineHeight(bool, bool) const
+{
+ return height() + marginTop() + marginBottom();
+}
+
+int RenderReplaced::baselinePosition(bool, bool) const
+{
+ return height() + marginTop() + marginBottom();
+}
+
+unsigned RenderReplaced::caretMaxRenderedOffset() const
+{
+ return 1;
+}
+
+VisiblePosition RenderReplaced::positionForPoint(const IntPoint& point)
+{
+ InlineBox* box = inlineBoxWrapper();
+ if (!box)
+ return createVisiblePosition(0, DOWNSTREAM);
+
+ // FIXME: This code is buggy if the replaced element is relative positioned.
+
+ RootInlineBox* root = box->root();
+
+ int top = root->lineTop();
+ int bottom = root->nextRootBox() ? root->nextRootBox()->lineTop() : root->lineBottom();
+
+ if (point.y() + y() < top)
+ return createVisiblePosition(caretMinOffset(), DOWNSTREAM); // coordinates are above
+
+ if (point.y() + y() >= bottom)
+ return createVisiblePosition(caretMaxOffset(), DOWNSTREAM); // coordinates are below
+
+ if (node()) {
+ if (point.x() <= width() / 2)
+ return createVisiblePosition(0, DOWNSTREAM);
+ return createVisiblePosition(1, DOWNSTREAM);
+ }
+
+ return RenderBox::positionForPoint(point);
+}
+
+IntRect RenderReplaced::selectionRectForRepaint(RenderBoxModelObject* repaintContainer, bool clipToVisibleContent)
+{
+ ASSERT(!needsLayout());
+
+ if (!isSelected())
+ return IntRect();
+
+ IntRect rect = localSelectionRect();
+ if (clipToVisibleContent)
+ computeRectForRepaint(repaintContainer, rect);
+ else
+ rect = localToContainerQuad(FloatRect(rect), repaintContainer).enclosingBoundingBox();
+
+ return rect;
+}
+
+IntRect RenderReplaced::localSelectionRect(bool checkWhetherSelected) const
+{
+ if (checkWhetherSelected && !isSelected())
+ return IntRect();
+
+ if (!m_inlineBoxWrapper)
+ // We're a block-level replaced element. Just return our own dimensions.
+ return IntRect(0, 0, width(), height());
+
+ RenderBlock* cb = containingBlock();
+ if (!cb)
+ return IntRect();
+
+ RootInlineBox* root = m_inlineBoxWrapper->root();
+ return IntRect(0, root->selectionTop() - y(), width(), root->selectionHeight());
+}
+
+void RenderReplaced::setSelectionState(SelectionState s)
+{
+ RenderBox::setSelectionState(s);
+ if (m_inlineBoxWrapper) {
+ RootInlineBox* line = m_inlineBoxWrapper->root();
+ if (line)
+ line->setHasSelectedChildren(isSelected());
+ }
+
+ containingBlock()->setSelectionState(s);
+}
+
+bool RenderReplaced::isSelected() const
+{
+ SelectionState s = selectionState();
+ if (s == SelectionNone)
+ return false;
+ if (s == SelectionInside)
+ return true;
+
+ int selectionStart, selectionEnd;
+ selectionStartEnd(selectionStart, selectionEnd);
+ if (s == SelectionStart)
+ return selectionStart == 0;
+
+ int end = node()->hasChildNodes() ? node()->childNodeCount() : 1;
+ if (s == SelectionEnd)
+ return selectionEnd == end;
+ if (s == SelectionBoth)
+ return selectionStart == 0 && selectionEnd == end;
+
+ ASSERT(0);
+ return false;
+}
+
+IntSize RenderReplaced::intrinsicSize() const
+{
+ return m_intrinsicSize;
+}
+
+void RenderReplaced::setIntrinsicSize(const IntSize& size)
+{
+ m_intrinsicSize = size;
+}
+
+IntRect RenderReplaced::clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer)
+{
+ if (style()->visibility() != VISIBLE && !enclosingLayer()->hasVisibleContent())
+ return IntRect();
+
+ // The selectionRect can project outside of the overflowRect, so take their union
+ // for repainting to avoid selection painting glitches.
+ IntRect r = unionRect(localSelectionRect(false), visibleOverflowRect());
+
+ RenderView* v = view();
+ if (v) {
+ // FIXME: layoutDelta needs to be applied in parts before/after transforms and
+ // repaint containers. https://bugs.webkit.org/show_bug.cgi?id=23308
+ r.move(v->layoutDelta());
+ }
+
+ if (style()) {
+ if (style()->hasAppearance())
+ // The theme may wish to inflate the rect used when repainting.
+ theme()->adjustRepaintRect(this, r);
+ if (v)
+ r.inflate(style()->outlineSize());
+ }
+ computeRectForRepaint(repaintContainer, r);
+ return r;
+}
+
+}