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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "config.h" |
| 6 #include "core/paint/TableCellPainter.h" |
| 7 |
| 8 #include "core/paint/BlockPainter.h" |
| 9 #include "core/paint/BoxPainter.h" |
| 10 #include "core/paint/DrawingRecorder.h" |
| 11 #include "core/rendering/PaintInfo.h" |
| 12 #include "core/rendering/RenderTableCell.h" |
| 13 |
| 14 namespace blink { |
| 15 |
| 16 inline CollapsedBorderValue TableCellPainter::cachedCollapsedLeftBorder(const Re
nderStyle* styleForCellFlow) const |
| 17 { |
| 18 if (styleForCellFlow->isHorizontalWritingMode()) { |
| 19 return styleForCellFlow->isLeftToRightDirection() ? m_renderTableCell.se
ction()->cachedCollapsedBorder(&m_renderTableCell, CBSStart) |
| 20 : m_renderTableCell.section()->cachedCollapsedBorder(&m_renderTableC
ell, CBSEnd); |
| 21 } |
| 22 return styleForCellFlow->slowIsFlippedBlocksWritingMode() ? m_renderTableCel
l.section()->cachedCollapsedBorder(&m_renderTableCell, CBSAfter) |
| 23 : m_renderTableCell.section()->cachedCollapsedBorder(&m_renderTableCell,
CBSBefore); |
| 24 } |
| 25 |
| 26 inline CollapsedBorderValue TableCellPainter::cachedCollapsedRightBorder(const R
enderStyle* styleForCellFlow) const |
| 27 { |
| 28 if (styleForCellFlow->isHorizontalWritingMode()) { |
| 29 return styleForCellFlow->isLeftToRightDirection() ? m_renderTableCell.se
ction()->cachedCollapsedBorder(&m_renderTableCell, CBSEnd) |
| 30 : m_renderTableCell.section()->cachedCollapsedBorder(&m_renderTableC
ell, CBSStart); |
| 31 } |
| 32 return styleForCellFlow->slowIsFlippedBlocksWritingMode() ? m_renderTableCel
l.section()->cachedCollapsedBorder(&m_renderTableCell, CBSBefore) |
| 33 : m_renderTableCell.section()->cachedCollapsedBorder(&m_renderTableCell,
CBSAfter); |
| 34 } |
| 35 |
| 36 inline CollapsedBorderValue TableCellPainter::cachedCollapsedTopBorder(const Ren
derStyle* styleForCellFlow) const |
| 37 { |
| 38 if (styleForCellFlow->isHorizontalWritingMode()) |
| 39 return styleForCellFlow->slowIsFlippedBlocksWritingMode() ? m_renderTabl
eCell.section()->cachedCollapsedBorder(&m_renderTableCell, CBSAfter) : m_renderT
ableCell.section()->cachedCollapsedBorder(&m_renderTableCell, CBSBefore); |
| 40 return styleForCellFlow->isLeftToRightDirection() ? m_renderTableCell.sectio
n()->cachedCollapsedBorder(&m_renderTableCell, CBSStart) : m_renderTableCell.sec
tion()->cachedCollapsedBorder(&m_renderTableCell, CBSEnd); |
| 41 } |
| 42 |
| 43 inline CollapsedBorderValue TableCellPainter::cachedCollapsedBottomBorder(const
RenderStyle* styleForCellFlow) const |
| 44 { |
| 45 if (styleForCellFlow->isHorizontalWritingMode()) { |
| 46 return styleForCellFlow->slowIsFlippedBlocksWritingMode() ? m_renderTabl
eCell.section()->cachedCollapsedBorder(&m_renderTableCell, CBSBefore) |
| 47 : m_renderTableCell.section()->cachedCollapsedBorder(&m_renderTableC
ell, CBSAfter); |
| 48 } |
| 49 return styleForCellFlow->isLeftToRightDirection() ? m_renderTableCell.sectio
n()->cachedCollapsedBorder(&m_renderTableCell, CBSEnd) |
| 50 : m_renderTableCell.section()->cachedCollapsedBorder(&m_renderTableCell,
CBSStart); |
| 51 } |
| 52 |
| 53 void TableCellPainter::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffse
t) |
| 54 { |
| 55 ASSERT(paintInfo.phase != PaintPhaseCollapsedTableBorders); |
| 56 BlockPainter(m_renderTableCell).paint(paintInfo, paintOffset); |
| 57 } |
| 58 |
| 59 struct CollapsedBorder { |
| 60 CollapsedBorderValue borderValue; |
| 61 BoxSide side; |
| 62 bool shouldPaint; |
| 63 int x1; |
| 64 int y1; |
| 65 int x2; |
| 66 int y2; |
| 67 EBorderStyle style; |
| 68 }; |
| 69 |
| 70 class CollapsedBorders { |
| 71 public: |
| 72 CollapsedBorders() |
| 73 : m_count(0) |
| 74 { |
| 75 } |
| 76 |
| 77 void addBorder(const CollapsedBorderValue& borderValue, BoxSide borderSide,
bool shouldPaint, int x1, int y1, int x2, int y2, EBorderStyle borderStyle) |
| 78 { |
| 79 if (borderValue.exists() && shouldPaint) { |
| 80 m_borders[m_count].borderValue = borderValue; |
| 81 m_borders[m_count].side = borderSide; |
| 82 m_borders[m_count].shouldPaint = shouldPaint; |
| 83 m_borders[m_count].x1 = x1; |
| 84 m_borders[m_count].x2 = x2; |
| 85 m_borders[m_count].y1 = y1; |
| 86 m_borders[m_count].y2 = y2; |
| 87 m_borders[m_count].style = borderStyle; |
| 88 m_count++; |
| 89 } |
| 90 } |
| 91 |
| 92 CollapsedBorder* nextBorder() |
| 93 { |
| 94 for (unsigned i = 0; i < m_count; i++) { |
| 95 if (m_borders[i].borderValue.exists() && m_borders[i].shouldPaint) { |
| 96 m_borders[i].shouldPaint = false; |
| 97 return &m_borders[i]; |
| 98 } |
| 99 } |
| 100 |
| 101 return 0; |
| 102 } |
| 103 |
| 104 CollapsedBorder m_borders[4]; |
| 105 unsigned m_count; |
| 106 }; |
| 107 |
| 108 static EBorderStyle collapsedBorderStyle(EBorderStyle style) |
| 109 { |
| 110 if (style == OUTSET) |
| 111 return GROOVE; |
| 112 if (style == INSET) |
| 113 return RIDGE; |
| 114 return style; |
| 115 } |
| 116 |
| 117 void TableCellPainter::paintCollapsedBorders(PaintInfo& paintInfo, const LayoutP
oint& paintOffset) |
| 118 { |
| 119 ASSERT(paintInfo.phase == PaintPhaseCollapsedTableBorders); |
| 120 |
| 121 if (!paintInfo.shouldPaintWithinRoot(&m_renderTableCell) || m_renderTableCel
l.style()->visibility() != VISIBLE) |
| 122 return; |
| 123 |
| 124 LayoutRect paintRect = LayoutRect(paintOffset + m_renderTableCell.location()
, m_renderTableCell.pixelSnappedSize()); |
| 125 if (paintRect.y() - m_renderTableCell.table()->outerBorderTop() >= paintInfo
.rect.maxY()) |
| 126 return; |
| 127 |
| 128 if (paintRect.maxY() + m_renderTableCell.table()->outerBorderBottom() <= pai
ntInfo.rect.y()) |
| 129 return; |
| 130 |
| 131 if (!m_renderTableCell.table()->currentBorderValue()) |
| 132 return; |
| 133 |
| 134 const RenderStyle* styleForCellFlow = m_renderTableCell.styleForCellFlow(); |
| 135 CollapsedBorderValue leftVal = cachedCollapsedLeftBorder(styleForCellFlow); |
| 136 CollapsedBorderValue rightVal = cachedCollapsedRightBorder(styleForCellFlow)
; |
| 137 CollapsedBorderValue topVal = cachedCollapsedTopBorder(styleForCellFlow); |
| 138 CollapsedBorderValue bottomVal = cachedCollapsedBottomBorder(styleForCellFlo
w); |
| 139 |
| 140 // Adjust our x/y/width/height so that we paint the collapsed borders at the
correct location. |
| 141 int topWidth = topVal.width(); |
| 142 int bottomWidth = bottomVal.width(); |
| 143 int leftWidth = leftVal.width(); |
| 144 int rightWidth = rightVal.width(); |
| 145 |
| 146 IntRect borderRect = pixelSnappedIntRect(paintRect.x() - leftWidth / 2, |
| 147 paintRect.y() - topWidth / 2, |
| 148 paintRect.width() + leftWidth / 2 + (rightWidth + 1) / 2, |
| 149 paintRect.height() + topWidth / 2 + (bottomWidth + 1) / 2); |
| 150 |
| 151 EBorderStyle topStyle = collapsedBorderStyle(topVal.style()); |
| 152 EBorderStyle bottomStyle = collapsedBorderStyle(bottomVal.style()); |
| 153 EBorderStyle leftStyle = collapsedBorderStyle(leftVal.style()); |
| 154 EBorderStyle rightStyle = collapsedBorderStyle(rightVal.style()); |
| 155 |
| 156 bool renderTop = topStyle > BHIDDEN && !topVal.isTransparent(); |
| 157 bool renderBottom = bottomStyle > BHIDDEN && !bottomVal.isTransparent(); |
| 158 bool renderLeft = leftStyle > BHIDDEN && !leftVal.isTransparent(); |
| 159 bool renderRight = rightStyle > BHIDDEN && !rightVal.isTransparent(); |
| 160 |
| 161 // We never paint diagonals at the joins. We simply let the border with the
highest |
| 162 // precedence paint on top of borders with lower precedence. |
| 163 CollapsedBorders borders; |
| 164 borders.addBorder(topVal, BSTop, renderTop, borderRect.x(), borderRect.y(),
borderRect.maxX(), borderRect.y() + topWidth, topStyle); |
| 165 borders.addBorder(bottomVal, BSBottom, renderBottom, borderRect.x(), borderR
ect.maxY() - bottomWidth, borderRect.maxX(), borderRect.maxY(), bottomStyle); |
| 166 borders.addBorder(leftVal, BSLeft, renderLeft, borderRect.x(), borderRect.y(
), borderRect.x() + leftWidth, borderRect.maxY(), leftStyle); |
| 167 borders.addBorder(rightVal, BSRight, renderRight, borderRect.maxX() - rightW
idth, borderRect.y(), borderRect.maxX(), borderRect.maxY(), rightStyle); |
| 168 |
| 169 GraphicsContext* graphicsContext = paintInfo.context; |
| 170 bool antialias = BoxPainter::shouldAntialiasLines(graphicsContext); |
| 171 |
| 172 for (CollapsedBorder* border = borders.nextBorder(); border; border = border
s.nextBorder()) { |
| 173 if (border->borderValue.isSameIgnoringColor(*m_renderTableCell.table()->
currentBorderValue())) { |
| 174 ObjectPainter::drawLineForBoxSide(graphicsContext, border->x1, borde
r->y1, border->x2, border->y2, border->side, |
| 175 border->borderValue.color().resolve(m_renderTableCell.style()->v
isitedDependentColor(CSSPropertyColor)), border->style, 0, 0, antialias); |
| 176 } |
| 177 } |
| 178 } |
| 179 |
| 180 void TableCellPainter::paintBackgroundsBehindCell(PaintInfo& paintInfo, const La
youtPoint& paintOffset, RenderObject* backgroundObject) |
| 181 { |
| 182 if (!paintInfo.shouldPaintWithinRoot(&m_renderTableCell)) |
| 183 return; |
| 184 |
| 185 if (!backgroundObject) |
| 186 return; |
| 187 |
| 188 if (m_renderTableCell.style()->visibility() != VISIBLE) |
| 189 return; |
| 190 |
| 191 RenderTable* tableElt = m_renderTableCell.table(); |
| 192 if (!tableElt->collapseBorders() && m_renderTableCell.style()->emptyCells()
== HIDE && !m_renderTableCell.firstChild()) |
| 193 return; |
| 194 |
| 195 LayoutPoint adjustedPaintOffset = paintOffset; |
| 196 if (backgroundObject != &m_renderTableCell) |
| 197 adjustedPaintOffset.moveBy(m_renderTableCell.location()); |
| 198 |
| 199 Color c = backgroundObject->resolveColor(CSSPropertyBackgroundColor); |
| 200 const FillLayer& bgLayer = backgroundObject->style()->backgroundLayers(); |
| 201 |
| 202 if (bgLayer.hasImage() || c.alpha()) { |
| 203 // We have to clip here because the background would paint |
| 204 // on top of the borders otherwise. This only matters for cells and row
s. |
| 205 bool shouldClip = backgroundObject->hasLayer() && (backgroundObject == &
m_renderTableCell || backgroundObject == m_renderTableCell.parent()) && tableElt
->collapseBorders(); |
| 206 GraphicsContextStateSaver stateSaver(*paintInfo.context, shouldClip); |
| 207 if (shouldClip) { |
| 208 LayoutRect clipRect(adjustedPaintOffset.x() + m_renderTableCell.bord
erLeft(), adjustedPaintOffset.y() + m_renderTableCell.borderTop(), |
| 209 m_renderTableCell.width() - m_renderTableCell.borderLeft() - m_r
enderTableCell.borderRight(), |
| 210 m_renderTableCell.height() - m_renderTableCell.borderTop() - m_r
enderTableCell.borderBottom()); |
| 211 paintInfo.context->clip(clipRect); |
| 212 } |
| 213 BoxPainter(m_renderTableCell).paintFillLayers(paintInfo, c, bgLayer, Lay
outRect(adjustedPaintOffset, m_renderTableCell.pixelSnappedSize()), BackgroundBl
eedNone, CompositeSourceOver, backgroundObject); |
| 214 } |
| 215 } |
| 216 |
| 217 void TableCellPainter::paintBoxDecorationBackground(PaintInfo& paintInfo, const
LayoutPoint& paintOffset) |
| 218 { |
| 219 if (!paintInfo.shouldPaintWithinRoot(&m_renderTableCell)) |
| 220 return; |
| 221 |
| 222 RenderTable* tableElt = m_renderTableCell.table(); |
| 223 if (!tableElt->collapseBorders() && m_renderTableCell.style()->emptyCells()
== HIDE && !m_renderTableCell.firstChild()) |
| 224 return; |
| 225 |
| 226 LayoutRect paintRect = LayoutRect(paintOffset, m_renderTableCell.pixelSnappe
dSize()); |
| 227 DrawingRecorder recorder(paintInfo.context, &m_renderTableCell, paintInfo.ph
ase, pixelSnappedIntRect(paintRect)); |
| 228 BoxPainter::paintBoxShadow(paintInfo, paintRect, m_renderTableCell.style(),
Normal); |
| 229 |
| 230 // Paint our cell background. |
| 231 paintBackgroundsBehindCell(paintInfo, paintOffset, &m_renderTableCell); |
| 232 |
| 233 BoxPainter::paintBoxShadow(paintInfo, paintRect, m_renderTableCell.style(),
Inset); |
| 234 |
| 235 if (!m_renderTableCell.style()->hasBorder() || tableElt->collapseBorders()) |
| 236 return; |
| 237 |
| 238 BoxPainter::paintBorder(m_renderTableCell, paintInfo, paintRect, m_renderTab
leCell.style()); |
| 239 } |
| 240 |
| 241 void TableCellPainter::paintMask(PaintInfo& paintInfo, const LayoutPoint& paintO
ffset) |
| 242 { |
| 243 if (m_renderTableCell.style()->visibility() != VISIBLE || paintInfo.phase !=
PaintPhaseMask) |
| 244 return; |
| 245 |
| 246 RenderTable* tableElt = m_renderTableCell.table(); |
| 247 if (!tableElt->collapseBorders() && m_renderTableCell.style()->emptyCells()
== HIDE && !m_renderTableCell.firstChild()) |
| 248 return; |
| 249 |
| 250 BoxPainter(m_renderTableCell).paintMaskImages(paintInfo, LayoutRect(paintOff
set, m_renderTableCell.pixelSnappedSize())); |
| 251 } |
| 252 |
| 253 } // namespace blink |
| 254 |
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