| /* |
| * Copyright (C) 1997 Martin Jones (mjones@kde.org) |
| * (C) 1997 Torben Weis (weis@kde.org) |
| * (C) 1998 Waldo Bastian (bastian@kde.org) |
| * (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 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 "RenderTableCell.h" |
| |
| #include "CollapsedBorderValue.h" |
| #include "FloatQuad.h" |
| #include "GraphicsContext.h" |
| #include "HTMLNames.h" |
| #include "HTMLTableCellElement.h" |
| #include "PaintInfo.h" |
| #include "RenderTableCol.h" |
| #include "RenderView.h" |
| #include "TransformState.h" |
| |
| #ifdef ANDROID_LAYOUT |
| #include "Document.h" |
| #include "Settings.h" |
| #endif |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| RenderTableCell::RenderTableCell(Node* node) |
| : RenderBlock(node) |
| , m_row(-1) |
| , m_column(-1) |
| , m_rowSpan(1) |
| , m_columnSpan(1) |
| , m_cellWidthChanged(false) |
| , m_intrinsicPaddingBefore(0) |
| , m_intrinsicPaddingAfter(0) |
| { |
| updateFromElement(); |
| } |
| |
| void RenderTableCell::destroy() |
| { |
| RenderTableSection* recalcSection = parent() ? section() : 0; |
| |
| RenderBlock::destroy(); |
| |
| if (recalcSection) |
| recalcSection->setNeedsCellRecalc(); |
| } |
| |
| void RenderTableCell::updateFromElement() |
| { |
| Node* n = node(); |
| if (n && (n->hasTagName(tdTag) || n->hasTagName(thTag))) { |
| HTMLTableCellElement* tc = static_cast<HTMLTableCellElement*>(n); |
| int oldRSpan = m_rowSpan; |
| int oldCSpan = m_columnSpan; |
| |
| m_columnSpan = tc->colSpan(); |
| m_rowSpan = tc->rowSpan(); |
| if ((oldRSpan != m_rowSpan || oldCSpan != m_columnSpan) && style() && parent()) { |
| setNeedsLayoutAndPrefWidthsRecalc(); |
| if (section()) |
| section()->setNeedsCellRecalc(); |
| } |
| } |
| } |
| |
| Length RenderTableCell::styleOrColLogicalWidth() const |
| { |
| Length w = style()->logicalWidth(); |
| if (!w.isAuto()) |
| return w; |
| |
| if (RenderTableCol* tableCol = table()->colElement(col())) { |
| int colSpanCount = colSpan(); |
| |
| Length colWidthSum = Length(0, Fixed); |
| for (int i = 1; i <= colSpanCount; i++) { |
| Length colWidth = tableCol->style()->logicalWidth(); |
| |
| // Percentage value should be returned only for colSpan == 1. |
| // Otherwise we return original width for the cell. |
| if (!colWidth.isFixed()) { |
| if (colSpanCount > 1) |
| return w; |
| return colWidth; |
| } |
| |
| colWidthSum = Length(colWidthSum.value() + colWidth.value(), Fixed); |
| |
| tableCol = table()->nextColElement(tableCol); |
| // If no next <col> tag found for the span we just return what we have for now. |
| if (!tableCol) |
| break; |
| } |
| |
| // Column widths specified on <col> apply to the border box of the cell. |
| // Percentages don't need to be handled since they're always treated this way (even when specified on the cells). |
| // See Bugzilla bug 8126 for details. |
| if (colWidthSum.isFixed() && colWidthSum.value() > 0) |
| colWidthSum = Length(max(0, colWidthSum.value() - borderAndPaddingLogicalWidth()), Fixed); |
| return colWidthSum; |
| } |
| |
| return w; |
| } |
| |
| void RenderTableCell::computePreferredLogicalWidths() |
| { |
| // The child cells rely on the grids up in the sections to do their computePreferredLogicalWidths work. Normally the sections are set up early, as table |
| // cells are added, but relayout can cause the cells to be freed, leaving stale pointers in the sections' |
| // grids. We must refresh those grids before the child cells try to use them. |
| table()->recalcSectionsIfNeeded(); |
| |
| RenderBlock::computePreferredLogicalWidths(); |
| if (node() && style()->autoWrap()) { |
| // See if nowrap was set. |
| Length w = styleOrColLogicalWidth(); |
| String nowrap = static_cast<Element*>(node())->getAttribute(nowrapAttr); |
| if (!nowrap.isNull() && w.isFixed()) |
| // Nowrap is set, but we didn't actually use it because of the |
| // fixed width set on the cell. Even so, it is a WinIE/Moz trait |
| // to make the minwidth of the cell into the fixed width. They do this |
| // even in strict mode, so do not make this a quirk. Affected the top |
| // of hiptop.com. |
| m_minPreferredLogicalWidth = max(w.value(), m_minPreferredLogicalWidth); |
| } |
| } |
| |
| void RenderTableCell::computeLogicalWidth() |
| { |
| #ifdef ANDROID_LAYOUT |
| if (view()->frameView()) |
| setVisibleWidth(view()->frameView()->textWrapWidth()); |
| #endif |
| } |
| |
| void RenderTableCell::updateLogicalWidth(int w) |
| { |
| if (w == logicalWidth()) |
| return; |
| |
| setLogicalWidth(w); |
| setCellWidthChanged(true); |
| } |
| |
| void RenderTableCell::layout() |
| { |
| layoutBlock(cellWidthChanged()); |
| setCellWidthChanged(false); |
| } |
| |
| int RenderTableCell::paddingTop(bool includeIntrinsicPadding) const |
| { |
| int result = RenderBlock::paddingTop(); |
| if (!includeIntrinsicPadding || !isHorizontalWritingMode()) |
| return result; |
| return result + (style()->writingMode() == TopToBottomWritingMode ? intrinsicPaddingBefore() : intrinsicPaddingAfter()); |
| } |
| |
| int RenderTableCell::paddingBottom(bool includeIntrinsicPadding) const |
| { |
| int result = RenderBlock::paddingBottom(); |
| if (!includeIntrinsicPadding || !isHorizontalWritingMode()) |
| return result; |
| return result + (style()->writingMode() == TopToBottomWritingMode ? intrinsicPaddingAfter() : intrinsicPaddingBefore()); |
| } |
| |
| int RenderTableCell::paddingLeft(bool includeIntrinsicPadding) const |
| { |
| int result = RenderBlock::paddingLeft(); |
| if (!includeIntrinsicPadding || isHorizontalWritingMode()) |
| return result; |
| return result + (style()->writingMode() == LeftToRightWritingMode ? intrinsicPaddingBefore() : intrinsicPaddingAfter()); |
| |
| } |
| |
| int RenderTableCell::paddingRight(bool includeIntrinsicPadding) const |
| { |
| int result = RenderBlock::paddingRight(); |
| if (!includeIntrinsicPadding || isHorizontalWritingMode()) |
| return result; |
| return result + (style()->writingMode() == LeftToRightWritingMode ? intrinsicPaddingAfter() : intrinsicPaddingBefore()); |
| } |
| |
| int RenderTableCell::paddingBefore(bool includeIntrinsicPadding) const |
| { |
| int result = RenderBlock::paddingBefore(); |
| if (!includeIntrinsicPadding) |
| return result; |
| return result + intrinsicPaddingBefore(); |
| } |
| |
| int RenderTableCell::paddingAfter(bool includeIntrinsicPadding) const |
| { |
| int result = RenderBlock::paddingAfter(); |
| if (!includeIntrinsicPadding) |
| return result; |
| return result + intrinsicPaddingAfter(); |
| } |
| |
| void RenderTableCell::setOverrideSize(int size) |
| { |
| clearIntrinsicPadding(); |
| RenderBlock::setOverrideSize(size); |
| } |
| |
| void RenderTableCell::setOverrideSizeFromRowHeight(int rowHeight) |
| { |
| clearIntrinsicPadding(); |
| RenderBlock::setOverrideSize(max(0, rowHeight - borderBefore() - paddingBefore() - borderAfter() - paddingAfter())); |
| } |
| |
| IntSize RenderTableCell::offsetFromContainer(RenderObject* o, const IntPoint& point) const |
| { |
| ASSERT(o == container()); |
| |
| IntSize offset = RenderBlock::offsetFromContainer(o, point); |
| if (parent()) |
| offset.expand(-parentBox()->x(), -parentBox()->y()); |
| |
| return offset; |
| } |
| |
| IntRect RenderTableCell::clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer) |
| { |
| // If the table grid is dirty, we cannot get reliable information about adjoining cells, |
| // so we ignore outside borders. This should not be a problem because it means that |
| // the table is going to recalculate the grid, relayout and repaint its current rect, which |
| // includes any outside borders of this cell. |
| if (!table()->collapseBorders() || table()->needsSectionRecalc()) |
| return RenderBlock::clippedOverflowRectForRepaint(repaintContainer); |
| |
| bool rtl = !table()->style()->isLeftToRightDirection(); |
| int outlineSize = style()->outlineSize(); |
| int left = max(borderHalfLeft(true), outlineSize); |
| int right = max(borderHalfRight(true), outlineSize); |
| int top = max(borderHalfTop(true), outlineSize); |
| int bottom = max(borderHalfBottom(true), outlineSize); |
| if ((left && !rtl) || (right && rtl)) { |
| if (RenderTableCell* before = table()->cellBefore(this)) { |
| top = max(top, before->borderHalfTop(true)); |
| bottom = max(bottom, before->borderHalfBottom(true)); |
| } |
| } |
| if ((left && rtl) || (right && !rtl)) { |
| if (RenderTableCell* after = table()->cellAfter(this)) { |
| top = max(top, after->borderHalfTop(true)); |
| bottom = max(bottom, after->borderHalfBottom(true)); |
| } |
| } |
| if (top) { |
| if (RenderTableCell* above = table()->cellAbove(this)) { |
| left = max(left, above->borderHalfLeft(true)); |
| right = max(right, above->borderHalfRight(true)); |
| } |
| } |
| if (bottom) { |
| if (RenderTableCell* below = table()->cellBelow(this)) { |
| left = max(left, below->borderHalfLeft(true)); |
| right = max(right, below->borderHalfRight(true)); |
| } |
| } |
| left = max(left, -minXVisualOverflow()); |
| top = max(top, -minYVisualOverflow()); |
| IntRect r(-left, - top, left + max(width() + right, maxXVisualOverflow()), top + max(height() + bottom, maxYVisualOverflow())); |
| |
| if (RenderView* v = view()) { |
| // 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()); |
| } |
| computeRectForRepaint(repaintContainer, r); |
| return r; |
| } |
| |
| void RenderTableCell::computeRectForRepaint(RenderBoxModelObject* repaintContainer, IntRect& r, bool fixed) |
| { |
| if (repaintContainer == this) |
| return; |
| r.setY(r.y()); |
| RenderView* v = view(); |
| if ((!v || !v->layoutStateEnabled() || repaintContainer) && parent()) |
| r.move(-parentBox()->x(), -parentBox()->y()); // Rows are in the same coordinate space, so don't add their offset in. |
| RenderBlock::computeRectForRepaint(repaintContainer, r, fixed); |
| } |
| |
| int RenderTableCell::cellBaselinePosition() const |
| { |
| // <http://www.w3.org/TR/2007/CR-CSS21-20070719/tables.html#height-layout>: The baseline of a cell is the baseline of |
| // the first in-flow line box in the cell, or the first in-flow table-row in the cell, whichever comes first. If there |
| // is no such line box or table-row, the baseline is the bottom of content edge of the cell box. |
| int firstLineBaseline = firstLineBoxBaseline(); |
| if (firstLineBaseline != -1) |
| return firstLineBaseline; |
| return paddingBefore() + borderBefore() + contentLogicalHeight(); |
| } |
| |
| void RenderTableCell::styleWillChange(StyleDifference diff, const RenderStyle* newStyle) |
| { |
| if (parent() && section() && style() && style()->height() != newStyle->height()) |
| section()->setNeedsCellRecalc(); |
| |
| ASSERT(newStyle->display() == TABLE_CELL); |
| |
| RenderBlock::styleWillChange(diff, newStyle); |
| } |
| |
| void RenderTableCell::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) |
| { |
| RenderBlock::styleDidChange(diff, oldStyle); |
| setHasBoxDecorations(true); |
| } |
| |
| // The following rules apply for resolving conflicts and figuring out which border |
| // to use. |
| // (1) Borders with the 'border-style' of 'hidden' take precedence over all other conflicting |
| // borders. Any border with this value suppresses all borders at this location. |
| // (2) Borders with a style of 'none' have the lowest priority. Only if the border properties of all |
| // the elements meeting at this edge are 'none' will the border be omitted (but note that 'none' is |
| // the default value for the border style.) |
| // (3) If none of the styles are 'hidden' and at least one of them is not 'none', then narrow borders |
| // are discarded in favor of wider ones. If several have the same 'border-width' then styles are preferred |
| // in this order: 'double', 'solid', 'dashed', 'dotted', 'ridge', 'outset', 'groove', and the lowest: 'inset'. |
| // (4) If border styles differ only in color, then a style set on a cell wins over one on a row, |
| // which wins over a row group, column, column group and, lastly, table. It is undefined which color |
| // is used when two elements of the same type disagree. |
| static int compareBorders(const CollapsedBorderValue& border1, const CollapsedBorderValue& border2) |
| { |
| // Sanity check the values passed in. The null border have lowest priority. |
| if (!border2.exists()) { |
| if (!border1.exists()) |
| return 0; |
| return 1; |
| } |
| if (!border1.exists()) |
| return -1; |
| |
| // Rule #1 above. |
| if (border2.style() == BHIDDEN) { |
| if (border1.style() == BHIDDEN) |
| return 0; |
| return -1; |
| } |
| if (border1.style() == BHIDDEN) |
| return 1; |
| |
| // Rule #2 above. A style of 'none' has lowest priority and always loses to any other border. |
| if (border2.style() == BNONE) { |
| if (border1.style() == BNONE) |
| return 0; |
| return 1; |
| } |
| if (border1.style() == BNONE) |
| return -1; |
| |
| // The first part of rule #3 above. Wider borders win. |
| if (border1.width() != border2.width()) |
| return border1.width() < border2.width() ? -1 : 1; |
| |
| // The borders have equal width. Sort by border style. |
| if (border1.style() != border2.style()) |
| return border1.style() < border2.style() ? -1 : 1; |
| |
| // The border have the same width and style. Rely on precedence (cell over row over row group, etc.) |
| if (border1.precedence() == border2.precedence()) |
| return 0; |
| return border1.precedence() < border2.precedence() ? -1 : 1; |
| } |
| |
| static CollapsedBorderValue chooseBorder(const CollapsedBorderValue& border1, const CollapsedBorderValue& border2) |
| { |
| const CollapsedBorderValue& border = compareBorders(border1, border2) < 0 ? border2 : border1; |
| return border.style() == BHIDDEN ? CollapsedBorderValue() : border; |
| } |
| |
| CollapsedBorderValue RenderTableCell::collapsedStartBorder() const |
| { |
| RenderTable* table = this->table(); |
| bool isStartColumn = col() == 0; |
| |
| // For the start border, we need to check, in order of precedence: |
| // (1) Our start border. |
| int start = CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderStartColor, table->style()->direction(), table->style()->writingMode()); |
| int end = CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderEndColor, table->style()->direction(), table->style()->writingMode()); |
| CollapsedBorderValue result(&style()->borderStart(), style()->visitedDependentColor(start), BCELL); |
| |
| // (2) The end border of the preceding cell. |
| if (RenderTableCell* prevCell = table->cellBefore(this)) { |
| CollapsedBorderValue prevCellBorder = CollapsedBorderValue(&prevCell->style()->borderEnd(), prevCell->style()->visitedDependentColor(end), BCELL); |
| result = chooseBorder(prevCellBorder, result); |
| if (!result.exists()) |
| return result; |
| } else if (isStartColumn) { |
| // (3) Our row's start border. |
| result = chooseBorder(result, CollapsedBorderValue(&parent()->style()->borderStart(), parent()->style()->visitedDependentColor(start), BROW)); |
| if (!result.exists()) |
| return result; |
| |
| // (4) Our row group's start border. |
| result = chooseBorder(result, CollapsedBorderValue(§ion()->style()->borderStart(), section()->style()->visitedDependentColor(start), BROWGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| // (5) Our column and column group's start borders. |
| bool startColEdge; |
| bool endColEdge; |
| RenderTableCol* colElt = table->colElement(col(), &startColEdge, &endColEdge); |
| if (colElt && startColEdge) { |
| result = chooseBorder(result, CollapsedBorderValue(&colElt->style()->borderStart(), colElt->style()->visitedDependentColor(start), BCOL)); |
| if (!result.exists()) |
| return result; |
| if (colElt->parent()->isTableCol() && !colElt->previousSibling()) { |
| result = chooseBorder(result, CollapsedBorderValue(&colElt->parent()->style()->borderStart(), colElt->parent()->style()->visitedDependentColor(start), BCOLGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| // (6) The end border of the preceding column. |
| if (!isStartColumn) { |
| colElt = table->colElement(col() -1, &startColEdge, &endColEdge); |
| if (colElt && endColEdge) { |
| CollapsedBorderValue endBorder = CollapsedBorderValue(&colElt->style()->borderEnd(), colElt->style()->visitedDependentColor(end), BCOL); |
| result = chooseBorder(endBorder, result); |
| if (!result.exists()) |
| return result; |
| } |
| } else { |
| // (7) The table's start border. |
| result = chooseBorder(result, CollapsedBorderValue(&table->style()->borderStart(), table->style()->visitedDependentColor(start), BTABLE)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| return result; |
| } |
| |
| CollapsedBorderValue RenderTableCell::collapsedEndBorder() const |
| { |
| RenderTable* table = this->table(); |
| bool isEndColumn = table->colToEffCol(col() + colSpan() - 1) == table->numEffCols() - 1; |
| |
| // For end border, we need to check, in order of precedence: |
| // (1) Our end border. |
| int start = CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderStartColor, table->style()->direction(), table->style()->writingMode()); |
| int end = CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderEndColor, table->style()->direction(), table->style()->writingMode()); |
| CollapsedBorderValue result = CollapsedBorderValue(&style()->borderEnd(), style()->visitedDependentColor(end), BCELL); |
| |
| // (2) The start border of the following cell. |
| if (!isEndColumn) { |
| RenderTableCell* nextCell = table->cellAfter(this); |
| if (nextCell && nextCell->style()) { |
| CollapsedBorderValue startBorder = CollapsedBorderValue(&nextCell->style()->borderStart(), nextCell->style()->visitedDependentColor(start), BCELL); |
| result = chooseBorder(result, startBorder); |
| if (!result.exists()) |
| return result; |
| } |
| } else { |
| // (3) Our row's end border. |
| result = chooseBorder(result, CollapsedBorderValue(&parent()->style()->borderEnd(), parent()->style()->visitedDependentColor(end), BROW)); |
| if (!result.exists()) |
| return result; |
| |
| // (4) Our row group's end border. |
| result = chooseBorder(result, CollapsedBorderValue(§ion()->style()->borderEnd(), section()->style()->visitedDependentColor(end), BROWGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| // (5) Our column and column group's end borders. |
| bool startColEdge; |
| bool endColEdge; |
| RenderTableCol* colElt = table->colElement(col() + colSpan() - 1, &startColEdge, &endColEdge); |
| if (colElt && endColEdge) { |
| result = chooseBorder(result, CollapsedBorderValue(&colElt->style()->borderEnd(), colElt->style()->visitedDependentColor(end), BCOL)); |
| if (!result.exists()) |
| return result; |
| if (colElt->parent()->isTableCol() && !colElt->nextSibling()) { |
| result = chooseBorder(result, CollapsedBorderValue(&colElt->parent()->style()->borderEnd(), colElt->parent()->style()->visitedDependentColor(end), BCOLGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| // (6) The start border of the next column. |
| if (!isEndColumn) { |
| colElt = table->colElement(col() + colSpan(), &startColEdge, &endColEdge); |
| if (colElt && startColEdge) { |
| CollapsedBorderValue startBorder = CollapsedBorderValue(&colElt->style()->borderStart(), colElt->style()->visitedDependentColor(start), BCOL); |
| result = chooseBorder(result, startBorder); |
| if (!result.exists()) |
| return result; |
| } |
| } else { |
| // (7) The table's end border. |
| result = chooseBorder(result, CollapsedBorderValue(&table->style()->borderEnd(), table->style()->visitedDependentColor(end), BTABLE)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| return result; |
| } |
| |
| CollapsedBorderValue RenderTableCell::collapsedBeforeBorder() const |
| { |
| RenderTable* table = this->table(); |
| |
| // For before border, we need to check, in order of precedence: |
| // (1) Our before border. |
| int before = CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderBeforeColor, table->style()->direction(), table->style()->writingMode()); |
| int after = CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderAfterColor, table->style()->direction(), table->style()->writingMode()); |
| CollapsedBorderValue result = CollapsedBorderValue(&style()->borderBefore(), style()->visitedDependentColor(before), BCELL); |
| |
| RenderTableCell* prevCell = table->cellAbove(this); |
| if (prevCell) { |
| // (2) A before cell's after border. |
| result = chooseBorder(CollapsedBorderValue(&prevCell->style()->borderAfter(), prevCell->style()->visitedDependentColor(after), BCELL), result); |
| if (!result.exists()) |
| return result; |
| } |
| |
| // (3) Our row's before border. |
| result = chooseBorder(result, CollapsedBorderValue(&parent()->style()->borderBefore(), parent()->style()->visitedDependentColor(before), BROW)); |
| if (!result.exists()) |
| return result; |
| |
| // (4) The previous row's after border. |
| if (prevCell) { |
| RenderObject* prevRow = 0; |
| if (prevCell->section() == section()) |
| prevRow = parent()->previousSibling(); |
| else |
| prevRow = prevCell->section()->lastChild(); |
| |
| if (prevRow) { |
| result = chooseBorder(CollapsedBorderValue(&prevRow->style()->borderAfter(), prevRow->style()->visitedDependentColor(after), BROW), result); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| // Now check row groups. |
| RenderTableSection* currSection = section(); |
| if (!row()) { |
| // (5) Our row group's before border. |
| result = chooseBorder(result, CollapsedBorderValue(&currSection->style()->borderBefore(), currSection->style()->visitedDependentColor(before), BROWGROUP)); |
| if (!result.exists()) |
| return result; |
| |
| // (6) Previous row group's after border. |
| currSection = table->sectionAbove(currSection); |
| if (currSection) { |
| result = chooseBorder(CollapsedBorderValue(&currSection->style()->borderAfter(), currSection->style()->visitedDependentColor(after), BROWGROUP), result); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| if (!currSection) { |
| // (8) Our column and column group's before borders. |
| RenderTableCol* colElt = table->colElement(col()); |
| if (colElt) { |
| result = chooseBorder(result, CollapsedBorderValue(&colElt->style()->borderBefore(), colElt->style()->visitedDependentColor(before), BCOL)); |
| if (!result.exists()) |
| return result; |
| if (colElt->parent()->isTableCol()) { |
| result = chooseBorder(result, CollapsedBorderValue(&colElt->parent()->style()->borderBefore(), colElt->parent()->style()->visitedDependentColor(before), BCOLGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| // (9) The table's before border. |
| result = chooseBorder(result, CollapsedBorderValue(&table->style()->borderBefore(), table->style()->visitedDependentColor(before), BTABLE)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| return result; |
| } |
| |
| CollapsedBorderValue RenderTableCell::collapsedAfterBorder() const |
| { |
| RenderTable* table = this->table(); |
| |
| // For after border, we need to check, in order of precedence: |
| // (1) Our after border. |
| int before = CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderBeforeColor, table->style()->direction(), table->style()->writingMode()); |
| int after = CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderAfterColor, table->style()->direction(), table->style()->writingMode()); |
| CollapsedBorderValue result = CollapsedBorderValue(&style()->borderAfter(), style()->visitedDependentColor(after), BCELL); |
| |
| RenderTableCell* nextCell = table->cellBelow(this); |
| if (nextCell) { |
| // (2) An after cell's before border. |
| result = chooseBorder(result, CollapsedBorderValue(&nextCell->style()->borderBefore(), nextCell->style()->visitedDependentColor(before), BCELL)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| // (3) Our row's after border. (FIXME: Deal with rowspan!) |
| result = chooseBorder(result, CollapsedBorderValue(&parent()->style()->borderAfter(), parent()->style()->visitedDependentColor(after), BROW)); |
| if (!result.exists()) |
| return result; |
| |
| // (4) The next row's before border. |
| if (nextCell) { |
| result = chooseBorder(result, CollapsedBorderValue(&nextCell->parent()->style()->borderBefore(), nextCell->parent()->style()->visitedDependentColor(before), BROW)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| // Now check row groups. |
| RenderTableSection* currSection = section(); |
| if (row() + rowSpan() >= currSection->numRows()) { |
| // (5) Our row group's after border. |
| result = chooseBorder(result, CollapsedBorderValue(&currSection->style()->borderAfter(), currSection->style()->visitedDependentColor(after), BROWGROUP)); |
| if (!result.exists()) |
| return result; |
| |
| // (6) Following row group's before border. |
| currSection = table->sectionBelow(currSection); |
| if (currSection) { |
| result = chooseBorder(result, CollapsedBorderValue(&currSection->style()->borderBefore(), currSection->style()->visitedDependentColor(before), BROWGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| if (!currSection) { |
| // (8) Our column and column group's after borders. |
| RenderTableCol* colElt = table->colElement(col()); |
| if (colElt) { |
| result = chooseBorder(result, CollapsedBorderValue(&colElt->style()->borderAfter(), colElt->style()->visitedDependentColor(after), BCOL)); |
| if (!result.exists()) return result; |
| if (colElt->parent()->isTableCol()) { |
| result = chooseBorder(result, CollapsedBorderValue(&colElt->parent()->style()->borderAfter(), colElt->parent()->style()->visitedDependentColor(after), BCOLGROUP)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| // (9) The table's after border. |
| result = chooseBorder(result, CollapsedBorderValue(&table->style()->borderAfter(), table->style()->visitedDependentColor(after), BTABLE)); |
| if (!result.exists()) |
| return result; |
| } |
| |
| return result; |
| } |
| |
| CollapsedBorderValue RenderTableCell::collapsedLeftBorder() const |
| { |
| RenderStyle* tableStyle = table()->style(); |
| if (tableStyle->isHorizontalWritingMode()) |
| return tableStyle->isLeftToRightDirection() ? collapsedStartBorder() : collapsedEndBorder(); |
| return tableStyle->isFlippedBlocksWritingMode() ? collapsedAfterBorder() : collapsedBeforeBorder(); |
| } |
| |
| CollapsedBorderValue RenderTableCell::collapsedRightBorder() const |
| { |
| RenderStyle* tableStyle = table()->style(); |
| if (tableStyle->isHorizontalWritingMode()) |
| return tableStyle->isLeftToRightDirection() ? collapsedEndBorder() : collapsedStartBorder(); |
| return tableStyle->isFlippedBlocksWritingMode() ? collapsedBeforeBorder() : collapsedAfterBorder(); |
| } |
| |
| CollapsedBorderValue RenderTableCell::collapsedTopBorder() const |
| { |
| RenderStyle* tableStyle = table()->style(); |
| if (tableStyle->isHorizontalWritingMode()) |
| return tableStyle->isFlippedBlocksWritingMode() ? collapsedAfterBorder() : collapsedBeforeBorder(); |
| return tableStyle->isLeftToRightDirection() ? collapsedStartBorder() : collapsedEndBorder(); |
| } |
| |
| CollapsedBorderValue RenderTableCell::collapsedBottomBorder() const |
| { |
| RenderStyle* tableStyle = table()->style(); |
| if (tableStyle->isHorizontalWritingMode()) |
| return tableStyle->isFlippedBlocksWritingMode() ? collapsedBeforeBorder() : collapsedAfterBorder(); |
| return tableStyle->isLeftToRightDirection() ? collapsedEndBorder() : collapsedStartBorder(); |
| } |
| |
| int RenderTableCell::borderLeft() const |
| { |
| return table()->collapseBorders() ? borderHalfLeft(false) : RenderBlock::borderLeft(); |
| } |
| |
| int RenderTableCell::borderRight() const |
| { |
| return table()->collapseBorders() ? borderHalfRight(false) : RenderBlock::borderRight(); |
| } |
| |
| int RenderTableCell::borderTop() const |
| { |
| return table()->collapseBorders() ? borderHalfTop(false) : RenderBlock::borderTop(); |
| } |
| |
| int RenderTableCell::borderBottom() const |
| { |
| return table()->collapseBorders() ? borderHalfBottom(false) : RenderBlock::borderBottom(); |
| } |
| |
| // FIXME: https://bugs.webkit.org/show_bug.cgi?id=46191, make the collapsed border drawing |
| // work with different block flow values instead of being hard-coded to top-to-bottom. |
| int RenderTableCell::borderStart() const |
| { |
| return table()->collapseBorders() ? borderHalfStart(false) : RenderBlock::borderStart(); |
| } |
| |
| int RenderTableCell::borderEnd() const |
| { |
| return table()->collapseBorders() ? borderHalfEnd(false) : RenderBlock::borderEnd(); |
| } |
| |
| int RenderTableCell::borderBefore() const |
| { |
| return table()->collapseBorders() ? borderHalfBefore(false) : RenderBlock::borderBefore(); |
| } |
| |
| int RenderTableCell::borderAfter() const |
| { |
| return table()->collapseBorders() ? borderHalfAfter(false) : RenderBlock::borderAfter(); |
| } |
| |
| int RenderTableCell::borderHalfLeft(bool outer) const |
| { |
| RenderStyle* tableStyle = table()->style(); |
| if (tableStyle->isHorizontalWritingMode()) |
| return tableStyle->isLeftToRightDirection() ? borderHalfStart(outer) : borderHalfEnd(outer); |
| return tableStyle->isFlippedBlocksWritingMode() ? borderHalfAfter(outer) : borderHalfBefore(outer); |
| } |
| |
| int RenderTableCell::borderHalfRight(bool outer) const |
| { |
| RenderStyle* tableStyle = table()->style(); |
| if (tableStyle->isHorizontalWritingMode()) |
| return tableStyle->isLeftToRightDirection() ? borderHalfEnd(outer) : borderHalfStart(outer); |
| return tableStyle->isFlippedBlocksWritingMode() ? borderHalfBefore(outer) : borderHalfAfter(outer); |
| } |
| |
| int RenderTableCell::borderHalfTop(bool outer) const |
| { |
| RenderStyle* tableStyle = table()->style(); |
| if (tableStyle->isHorizontalWritingMode()) |
| return tableStyle->isFlippedBlocksWritingMode() ? borderHalfAfter(outer) : borderHalfBefore(outer); |
| return tableStyle->isLeftToRightDirection() ? borderHalfStart(outer) : borderHalfEnd(outer); |
| } |
| |
| int RenderTableCell::borderHalfBottom(bool outer) const |
| { |
| RenderStyle* tableStyle = table()->style(); |
| if (tableStyle->isHorizontalWritingMode()) |
| return tableStyle->isFlippedBlocksWritingMode() ? borderHalfBefore(outer) : borderHalfAfter(outer); |
| return tableStyle->isLeftToRightDirection() ? borderHalfEnd(outer) : borderHalfStart(outer); |
| } |
| |
| int RenderTableCell::borderHalfStart(bool outer) const |
| { |
| CollapsedBorderValue border = collapsedStartBorder(); |
| if (border.exists()) |
| return (border.width() + ((table()->style()->isLeftToRightDirection() ^ outer) ? 1 : 0)) / 2; // Give the extra pixel to top and left. |
| return 0; |
| } |
| |
| int RenderTableCell::borderHalfEnd(bool outer) const |
| { |
| CollapsedBorderValue border = collapsedEndBorder(); |
| if (border.exists()) |
| return (border.width() + ((table()->style()->isLeftToRightDirection() ^ outer) ? 0 : 1)) / 2; |
| return 0; |
| } |
| |
| int RenderTableCell::borderHalfBefore(bool outer) const |
| { |
| CollapsedBorderValue border = collapsedBeforeBorder(); |
| if (border.exists()) |
| return (border.width() + ((table()->style()->isFlippedBlocksWritingMode() ^ outer) ? 0 : 1)) / 2; // Give the extra pixel to top and left. |
| return 0; |
| } |
| |
| int RenderTableCell::borderHalfAfter(bool outer) const |
| { |
| CollapsedBorderValue border = collapsedAfterBorder(); |
| if (border.exists()) |
| return (border.width() + ((table()->style()->isFlippedBlocksWritingMode() ^ outer) ? 1 : 0)) / 2; |
| return 0; |
| } |
| |
| void RenderTableCell::paint(PaintInfo& paintInfo, int tx, int ty) |
| { |
| if (paintInfo.phase == PaintPhaseCollapsedTableBorders && style()->visibility() == VISIBLE) { |
| if (!paintInfo.shouldPaintWithinRoot(this)) |
| return; |
| |
| tx += x(); |
| ty += y(); |
| int os = 2 * maximalOutlineSize(paintInfo.phase); |
| if (ty - table()->outerBorderTop() < paintInfo.rect.maxY() + os |
| && ty + height() + table()->outerBorderBottom() > paintInfo.rect.y() - os) |
| paintCollapsedBorder(paintInfo.context, tx, ty, width(), height()); |
| return; |
| } |
| |
| RenderBlock::paint(paintInfo, tx, ty); |
| } |
| |
| static EBorderStyle collapsedBorderStyle(EBorderStyle style) |
| { |
| if (style == OUTSET) |
| return GROOVE; |
| if (style == INSET) |
| return RIDGE; |
| return style; |
| } |
| |
| struct CollapsedBorder { |
| CollapsedBorderValue borderValue; |
| BoxSide side; |
| bool shouldPaint; |
| int x1; |
| int y1; |
| int x2; |
| int y2; |
| EBorderStyle style; |
| }; |
| |
| class CollapsedBorders { |
| public: |
| CollapsedBorders() |
| : m_count(0) |
| { |
| } |
| |
| void addBorder(const CollapsedBorderValue& borderValue, BoxSide borderSide, bool shouldPaint, |
| int x1, int y1, int x2, int y2, EBorderStyle borderStyle) |
| { |
| if (borderValue.exists() && shouldPaint) { |
| m_borders[m_count].borderValue = borderValue; |
| m_borders[m_count].side = borderSide; |
| m_borders[m_count].shouldPaint = shouldPaint; |
| m_borders[m_count].x1 = x1; |
| m_borders[m_count].x2 = x2; |
| m_borders[m_count].y1 = y1; |
| m_borders[m_count].y2 = y2; |
| m_borders[m_count].style = borderStyle; |
| m_count++; |
| } |
| } |
| |
| CollapsedBorder* nextBorder() |
| { |
| for (int i = 0; i < m_count; i++) { |
| if (m_borders[i].borderValue.exists() && m_borders[i].shouldPaint) { |
| m_borders[i].shouldPaint = false; |
| return &m_borders[i]; |
| } |
| } |
| |
| return 0; |
| } |
| |
| CollapsedBorder m_borders[4]; |
| int m_count; |
| }; |
| |
| static void addBorderStyle(RenderTableCell::CollapsedBorderStyles& borderStyles, CollapsedBorderValue borderValue) |
| { |
| if (!borderValue.exists()) |
| return; |
| size_t count = borderStyles.size(); |
| for (size_t i = 0; i < count; ++i) |
| if (borderStyles[i] == borderValue) |
| return; |
| borderStyles.append(borderValue); |
| } |
| |
| void RenderTableCell::collectBorderStyles(CollapsedBorderStyles& borderStyles) const |
| { |
| addBorderStyle(borderStyles, collapsedStartBorder()); |
| addBorderStyle(borderStyles, collapsedEndBorder()); |
| addBorderStyle(borderStyles, collapsedBeforeBorder()); |
| addBorderStyle(borderStyles, collapsedAfterBorder()); |
| } |
| |
| static int compareBorderStylesForQSort(const void* pa, const void* pb) |
| { |
| const CollapsedBorderValue* a = static_cast<const CollapsedBorderValue*>(pa); |
| const CollapsedBorderValue* b = static_cast<const CollapsedBorderValue*>(pb); |
| if (*a == *b) |
| return 0; |
| return compareBorders(*a, *b); |
| } |
| |
| void RenderTableCell::sortBorderStyles(CollapsedBorderStyles& borderStyles) |
| { |
| qsort(borderStyles.data(), borderStyles.size(), sizeof(CollapsedBorderValue), |
| compareBorderStylesForQSort); |
| } |
| |
| void RenderTableCell::paintCollapsedBorder(GraphicsContext* graphicsContext, int tx, int ty, int w, int h) |
| { |
| if (!table()->currentBorderStyle()) |
| return; |
| |
| CollapsedBorderValue leftVal = collapsedLeftBorder(); |
| CollapsedBorderValue rightVal = collapsedRightBorder(); |
| CollapsedBorderValue topVal = collapsedTopBorder(); |
| CollapsedBorderValue bottomVal = collapsedBottomBorder(); |
| |
| // Adjust our x/y/width/height so that we paint the collapsed borders at the correct location. |
| int topWidth = topVal.width(); |
| int bottomWidth = bottomVal.width(); |
| int leftWidth = leftVal.width(); |
| int rightWidth = rightVal.width(); |
| |
| tx -= leftWidth / 2; |
| ty -= topWidth / 2; |
| w += leftWidth / 2 + (rightWidth + 1) / 2; |
| h += topWidth / 2 + (bottomWidth + 1) / 2; |
| |
| EBorderStyle topStyle = collapsedBorderStyle(topVal.style()); |
| EBorderStyle bottomStyle = collapsedBorderStyle(bottomVal.style()); |
| EBorderStyle leftStyle = collapsedBorderStyle(leftVal.style()); |
| EBorderStyle rightStyle = collapsedBorderStyle(rightVal.style()); |
| |
| bool renderTop = topStyle > BHIDDEN && !topVal.isTransparent(); |
| bool renderBottom = bottomStyle > BHIDDEN && !bottomVal.isTransparent(); |
| bool renderLeft = leftStyle > BHIDDEN && !leftVal.isTransparent(); |
| bool renderRight = rightStyle > BHIDDEN && !rightVal.isTransparent(); |
| |
| // We never paint diagonals at the joins. We simply let the border with the highest |
| // precedence paint on top of borders with lower precedence. |
| CollapsedBorders borders; |
| borders.addBorder(topVal, BSTop, renderTop, tx, ty, tx + w, ty + topWidth, topStyle); |
| borders.addBorder(bottomVal, BSBottom, renderBottom, tx, ty + h - bottomWidth, tx + w, ty + h, bottomStyle); |
| borders.addBorder(leftVal, BSLeft, renderLeft, tx, ty, tx + leftWidth, ty + h, leftStyle); |
| borders.addBorder(rightVal, BSRight, renderRight, tx + w - rightWidth, ty, tx + w, ty + h, rightStyle); |
| |
| for (CollapsedBorder* border = borders.nextBorder(); border; border = borders.nextBorder()) { |
| if (border->borderValue == *table()->currentBorderStyle()) |
| drawLineForBoxSide(graphicsContext, border->x1, border->y1, border->x2, border->y2, border->side, |
| border->borderValue.color(), border->style, 0, 0); |
| } |
| } |
| |
| void RenderTableCell::paintBackgroundsBehindCell(PaintInfo& paintInfo, int tx, int ty, RenderObject* backgroundObject) |
| { |
| if (!paintInfo.shouldPaintWithinRoot(this)) |
| return; |
| |
| if (!backgroundObject) |
| return; |
| |
| if (style()->visibility() != VISIBLE) |
| return; |
| |
| RenderTable* tableElt = table(); |
| if (!tableElt->collapseBorders() && style()->emptyCells() == HIDE && !firstChild()) |
| return; |
| |
| if (backgroundObject != this) { |
| tx += x(); |
| ty += y(); |
| } |
| |
| int w = width(); |
| int h = height(); |
| |
| Color c = backgroundObject->style()->visitedDependentColor(CSSPropertyBackgroundColor); |
| const FillLayer* bgLayer = backgroundObject->style()->backgroundLayers(); |
| |
| if (bgLayer->hasImage() || c.isValid()) { |
| // We have to clip here because the background would paint |
| // on top of the borders otherwise. This only matters for cells and rows. |
| bool shouldClip = backgroundObject->hasLayer() && (backgroundObject == this || backgroundObject == parent()) && tableElt->collapseBorders(); |
| if (shouldClip) { |
| IntRect clipRect(tx + borderLeft(), ty + borderTop(), |
| w - borderLeft() - borderRight(), h - borderTop() - borderBottom()); |
| paintInfo.context->save(); |
| paintInfo.context->clip(clipRect); |
| } |
| paintFillLayers(paintInfo, c, bgLayer, tx, ty, w, h, CompositeSourceOver, backgroundObject); |
| if (shouldClip) |
| paintInfo.context->restore(); |
| } |
| } |
| |
| void RenderTableCell::paintBoxDecorations(PaintInfo& paintInfo, int tx, int ty) |
| { |
| if (!paintInfo.shouldPaintWithinRoot(this)) |
| return; |
| |
| RenderTable* tableElt = table(); |
| if (!tableElt->collapseBorders() && style()->emptyCells() == HIDE && !firstChild()) |
| return; |
| |
| int w = width(); |
| int h = height(); |
| |
| paintBoxShadow(paintInfo.context, tx, ty, w, h, style(), Normal); |
| |
| // Paint our cell background. |
| paintBackgroundsBehindCell(paintInfo, tx, ty, this); |
| |
| paintBoxShadow(paintInfo.context, tx, ty, w, h, style(), Inset); |
| |
| if (!style()->hasBorder() || tableElt->collapseBorders()) |
| return; |
| |
| paintBorder(paintInfo.context, tx, ty, w, h, style()); |
| } |
| |
| void RenderTableCell::paintMask(PaintInfo& paintInfo, int tx, int ty) |
| { |
| if (style()->visibility() != VISIBLE || paintInfo.phase != PaintPhaseMask) |
| return; |
| |
| RenderTable* tableElt = table(); |
| if (!tableElt->collapseBorders() && style()->emptyCells() == HIDE && !firstChild()) |
| return; |
| |
| int w = width(); |
| int h = height(); |
| |
| paintMaskImages(paintInfo, tx, ty, w, h); |
| } |
| |
| void RenderTableCell::scrollbarsChanged(bool horizontalScrollbarChanged, bool verticalScrollbarChanged) |
| { |
| int scrollbarHeight = scrollbarLogicalHeight(); |
| if (!scrollbarHeight) |
| return; // Not sure if we should be doing something when a scrollbar goes away or not. |
| |
| // We only care if the scrollbar that affects our intrinsic padding has been added. |
| if ((isHorizontalWritingMode() && !horizontalScrollbarChanged) || |
| (!isHorizontalWritingMode() && !verticalScrollbarChanged)) |
| return; |
| |
| // Shrink our intrinsic padding as much as possible to accommodate the scrollbar. |
| if (style()->verticalAlign() == MIDDLE) { |
| int totalHeight = logicalHeight(); |
| int heightWithoutIntrinsicPadding = totalHeight - intrinsicPaddingBefore() - intrinsicPaddingAfter(); |
| totalHeight -= scrollbarHeight; |
| int newBeforePadding = (totalHeight - heightWithoutIntrinsicPadding) / 2; |
| int newAfterPadding = totalHeight - heightWithoutIntrinsicPadding - newBeforePadding; |
| setIntrinsicPaddingBefore(newBeforePadding); |
| setIntrinsicPaddingAfter(newAfterPadding); |
| } else |
| setIntrinsicPaddingAfter(intrinsicPaddingAfter() - scrollbarHeight); |
| } |
| |
| } // namespace WebCore |
