1/** 2 * Copyright (C) 2003, 2006 Apple Computer, Inc. 3 * 4 * This library is free software; you can redistribute it and/or 5 * modify it under the terms of the GNU Library General Public 6 * License as published by the Free Software Foundation; either 7 * version 2 of the License, or (at your option) any later version. 8 * 9 * This library is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 * Library General Public License for more details. 13 * 14 * You should have received a copy of the GNU Library General Public License 15 * along with this library; see the file COPYING.LIB. If not, write to 16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 17 * Boston, MA 02110-1301, USA. 18 */ 19 20#include "config.h" 21#include "core/rendering/EllipsisBox.h" 22 23#include "core/rendering/HitTestResult.h" 24#include "core/rendering/InlineTextBox.h" 25#include "core/rendering/PaintInfo.h" 26#include "core/rendering/RenderBlock.h" 27#include "core/rendering/RootInlineBox.h" 28#include "core/rendering/TextPainter.h" 29#include "core/rendering/TextRunConstructor.h" 30#include "core/rendering/style/ShadowList.h" 31#include "platform/fonts/Font.h" 32#include "platform/graphics/GraphicsContextStateSaver.h" 33#include "platform/text/TextRun.h" 34 35namespace blink { 36 37void EllipsisBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom) 38{ 39 GraphicsContext* context = paintInfo.context; 40 RenderStyle* style = renderer().style(isFirstLineStyle()); 41 const Font& font = style->font(); 42 FloatPoint boxOrigin = locationIncludingFlipping(); 43 boxOrigin.moveBy(FloatPoint(paintOffset)); 44 if (!isHorizontal()) 45 boxOrigin.move(0, -virtualLogicalHeight()); 46 FloatRect boxRect(boxOrigin, LayoutSize(logicalWidth(), virtualLogicalHeight())); 47 GraphicsContextStateSaver stateSaver(*context); 48 if (!isHorizontal()) 49 context->concatCTM(InlineTextBox::rotation(boxRect, InlineTextBox::Clockwise)); 50 FloatPoint textOrigin(boxOrigin.x(), boxOrigin.y() + font.fontMetrics().ascent()); 51 52 bool isPrinting = renderer().document().printing(); 53 bool haveSelection = !isPrinting && paintInfo.phase != PaintPhaseTextClip && selectionState() != RenderObject::SelectionNone; 54 55 if (haveSelection) 56 paintSelection(context, boxOrigin, style, font); 57 else if (paintInfo.phase == PaintPhaseSelection) 58 return; 59 60 TextPainter::Style textStyle = TextPainter::textPaintingStyle(renderer(), style, paintInfo.forceBlackText(), isPrinting); 61 if (haveSelection) 62 textStyle = TextPainter::selectionPaintingStyle(renderer(), true, paintInfo.forceBlackText(), isPrinting, textStyle); 63 64 TextRun textRun = constructTextRun(&renderer(), font, m_str, style, TextRun::AllowTrailingExpansion); 65 TextPainter textPainter(context, font, textRun, textOrigin, boxRect, isHorizontal()); 66 textPainter.paint(0, m_str.length(), m_str.length(), textStyle); 67 68 paintMarkupBox(paintInfo, paintOffset, lineTop, lineBottom, style); 69} 70 71InlineBox* EllipsisBox::markupBox() const 72{ 73 if (!m_shouldPaintMarkupBox || !renderer().isRenderBlock()) 74 return 0; 75 76 RenderBlock& block = toRenderBlock(renderer()); 77 RootInlineBox* lastLine = block.lineAtIndex(block.lineCount() - 1); 78 if (!lastLine) 79 return 0; 80 81 // If the last line-box on the last line of a block is a link, -webkit-line-clamp paints that box after the ellipsis. 82 // It does not actually move the link. 83 InlineBox* anchorBox = lastLine->lastChild(); 84 if (!anchorBox || !anchorBox->renderer().style()->isLink()) 85 return 0; 86 87 return anchorBox; 88} 89 90void EllipsisBox::paintMarkupBox(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom, RenderStyle* style) 91{ 92 InlineBox* markupBox = this->markupBox(); 93 if (!markupBox) 94 return; 95 96 LayoutPoint adjustedPaintOffset = paintOffset; 97 adjustedPaintOffset.move(x() + m_logicalWidth - markupBox->x(), 98 y() + style->fontMetrics().ascent() - (markupBox->y() + markupBox->renderer().style(isFirstLineStyle())->fontMetrics().ascent())); 99 markupBox->paint(paintInfo, adjustedPaintOffset, lineTop, lineBottom); 100} 101 102IntRect EllipsisBox::selectionRect() 103{ 104 RenderStyle* style = renderer().style(isFirstLineStyle()); 105 const Font& font = style->font(); 106 return enclosingIntRect(font.selectionRectForText(constructTextRun(&renderer(), font, m_str, style, TextRun::AllowTrailingExpansion), IntPoint(logicalLeft(), logicalTop() + root().selectionTopAdjustedForPrecedingBlock()), root().selectionHeightAdjustedForPrecedingBlock())); 107} 108 109void EllipsisBox::paintSelection(GraphicsContext* context, const FloatPoint& boxOrigin, RenderStyle* style, const Font& font) 110{ 111 Color textColor = renderer().resolveColor(style, CSSPropertyColor); 112 Color c = renderer().selectionBackgroundColor(); 113 if (!c.alpha()) 114 return; 115 116 // If the text color ends up being the same as the selection background, invert the selection 117 // background. 118 if (textColor == c) 119 c = Color(0xff - c.red(), 0xff - c.green(), 0xff - c.blue()); 120 121 GraphicsContextStateSaver stateSaver(*context); 122 LayoutUnit selectionBottom = root().selectionBottom(); 123 LayoutUnit top = root().selectionTop(); 124 LayoutUnit h = root().selectionHeight(); 125 const int deltaY = roundToInt(renderer().style()->isFlippedLinesWritingMode() ? selectionBottom - logicalBottom() : logicalTop() - top); 126 const FloatPoint localOrigin(boxOrigin.x(), boxOrigin.y() - deltaY); 127 FloatRect clipRect(localOrigin, FloatSize(m_logicalWidth, h.toFloat())); 128 context->clip(clipRect); 129 context->drawHighlightForText(font, constructTextRun(&renderer(), font, m_str, style, TextRun::AllowTrailingExpansion), localOrigin, h, c); 130} 131 132bool EllipsisBox::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom) 133{ 134 LayoutPoint adjustedLocation = accumulatedOffset + roundedLayoutPoint(topLeft()); 135 136 // Hit test the markup box. 137 if (InlineBox* markupBox = this->markupBox()) { 138 RenderStyle* style = renderer().style(isFirstLineStyle()); 139 LayoutUnit mtx = adjustedLocation.x() + m_logicalWidth - markupBox->x(); 140 LayoutUnit mty = adjustedLocation.y() + style->fontMetrics().ascent() - (markupBox->y() + markupBox->renderer().style(isFirstLineStyle())->fontMetrics().ascent()); 141 if (markupBox->nodeAtPoint(request, result, locationInContainer, LayoutPoint(mtx, mty), lineTop, lineBottom)) { 142 renderer().updateHitTestResult(result, locationInContainer.point() - LayoutSize(mtx, mty)); 143 return true; 144 } 145 } 146 147 FloatPoint boxOrigin = locationIncludingFlipping(); 148 boxOrigin.moveBy(accumulatedOffset); 149 FloatRect boundsRect(boxOrigin, size()); 150 if (visibleToHitTestRequest(request) && boundsRect.intersects(HitTestLocation::rectForPoint(locationInContainer.point(), 0, 0, 0, 0))) { 151 renderer().updateHitTestResult(result, locationInContainer.point() - toLayoutSize(adjustedLocation)); 152 if (!result.addNodeToRectBasedTestResult(renderer().node(), request, locationInContainer, boundsRect)) 153 return true; 154 } 155 156 return false; 157} 158 159} // namespace blink 160