174 lines
7.7 KiB
C++
174 lines
7.7 KiB
C++
/**
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* Copyright (C) 2003, 2006 Apple Inc.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "config.h"
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#include "LegacyEllipsisBox.h"
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#include "Document.h"
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#include "FontCascade.h"
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#include "GraphicsContext.h"
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#include "HitTestResult.h"
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#include "LegacyInlineTextBox.h"
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#include "LegacyRootInlineBox.h"
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#include "PaintInfo.h"
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#include "TextRun.h"
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#include <wtf/IsoMallocInlines.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(LegacyEllipsisBox);
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LegacyEllipsisBox::LegacyEllipsisBox(RenderBlockFlow& renderer, const AtomString& ellipsisStr, LegacyInlineFlowBox* parent, int width, int height, int y, bool firstLine, bool isHorizontal, LegacyInlineBox* markupBox)
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: LegacyInlineElementBox(renderer, FloatPoint(0, y), width, firstLine, true, false, false, isHorizontal, 0, 0, parent)
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, m_shouldPaintMarkupBox(markupBox)
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, m_height(height)
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, m_str(ellipsisStr)
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{
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#if !ASSERT_WITH_SECURITY_IMPLICATION_DISABLED
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m_isEverInChildList = false;
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#endif
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}
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void LegacyEllipsisBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom)
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{
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GraphicsContext& context = paintInfo.context();
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const RenderStyle& lineStyle = this->lineStyle();
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Color textColor = lineStyle.visitedDependentColorWithColorFilter(CSSPropertyWebkitTextFillColor);
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if (textColor != context.fillColor())
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context.setFillColor(textColor);
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bool setShadow = false;
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if (lineStyle.textShadow()) {
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Color shadowColor = lineStyle.colorByApplyingColorFilter(lineStyle.textShadow()->color());
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context.setShadow(LayoutSize(lineStyle.textShadow()->x(), lineStyle.textShadow()->y()), lineStyle.textShadow()->radius(), shadowColor);
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setShadow = true;
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}
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const FontCascade& font = lineStyle.fontCascade();
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if (selectionState() != RenderObject::HighlightState::None) {
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paintSelection(context, paintOffset, lineStyle, font);
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// Select the correct color for painting the text.
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Color foreground = paintInfo.forceTextColor() ? paintInfo.forcedTextColor() : blockFlow().selectionForegroundColor();
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if (foreground.isValid() && foreground != textColor)
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context.setFillColor(foreground);
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}
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// FIXME: Why is this always LTR? Fix by passing correct text run flags below.
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context.drawText(font, RenderBlock::constructTextRun(m_str, lineStyle, AllowRightExpansion), LayoutPoint(x() + paintOffset.x(), y() + paintOffset.y() + lineStyle.fontMetrics().ascent()));
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// Restore the regular fill color.
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if (textColor != context.fillColor())
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context.setFillColor(textColor);
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if (setShadow)
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context.clearShadow();
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paintMarkupBox(paintInfo, paintOffset, lineTop, lineBottom, lineStyle);
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}
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LegacyInlineBox* LegacyEllipsisBox::markupBox() const
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{
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if (!m_shouldPaintMarkupBox)
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return 0;
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LegacyRootInlineBox* lastLine = blockFlow().lastRootBox();
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if (!lastLine)
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return 0;
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// If the last line-box on the last line of a block is a link, -webkit-line-clamp paints that box after the ellipsis.
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// It does not actually move the link.
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LegacyInlineBox* anchorBox = lastLine->lastChild();
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if (!anchorBox || !anchorBox->renderer().style().isLink())
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return 0;
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return anchorBox;
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}
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void LegacyEllipsisBox::paintMarkupBox(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom, const RenderStyle& style)
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{
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LegacyInlineBox* markupBox = this->markupBox();
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if (!markupBox)
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return;
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LayoutPoint adjustedPaintOffset = paintOffset;
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adjustedPaintOffset.move(x() + logicalWidth() - markupBox->x(),
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y() + style.fontMetrics().ascent() - (markupBox->y() + markupBox->lineStyle().fontMetrics().ascent()));
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markupBox->paint(paintInfo, adjustedPaintOffset, lineTop, lineBottom);
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}
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IntRect LegacyEllipsisBox::selectionRect()
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{
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const RenderStyle& lineStyle = this->lineStyle();
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const FontCascade& font = lineStyle.fontCascade();
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const LegacyRootInlineBox& rootBox = root();
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// FIXME: Why is this always LTR? Fix by passing correct text run flags below.
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LayoutRect selectionRect { LayoutUnit(x()), LayoutUnit(y() + rootBox.selectionTopAdjustedForPrecedingBlock()), 0_lu, rootBox.selectionHeightAdjustedForPrecedingBlock() };
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font.adjustSelectionRectForText(RenderBlock::constructTextRun(m_str, lineStyle, AllowRightExpansion), selectionRect);
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// FIXME: use directional pixel snapping instead.
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return enclosingIntRect(selectionRect);
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}
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void LegacyEllipsisBox::paintSelection(GraphicsContext& context, const LayoutPoint& paintOffset, const RenderStyle& style, const FontCascade& font)
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{
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Color textColor = style.visitedDependentColorWithColorFilter(CSSPropertyColor);
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Color c = blockFlow().selectionBackgroundColor();
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if (!c.isVisible())
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return;
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// If the text color ends up being the same as the selection background, invert the selection
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// background.
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if (textColor == c)
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c = c.invertedColorWithAlpha(1.0);
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const LegacyRootInlineBox& rootBox = root();
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GraphicsContextStateSaver stateSaver(context);
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// FIXME: Why is this always LTR? Fix by passing correct text run flags below.
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LayoutRect selectionRect { LayoutUnit(x() + paintOffset.x()), LayoutUnit(y() + paintOffset.y() + rootBox.selectionTop()), 0_lu, rootBox.selectionHeight() };
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TextRun run = RenderBlock::constructTextRun(m_str, style, AllowRightExpansion);
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font.adjustSelectionRectForText(run, selectionRect);
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context.fillRect(snapRectToDevicePixelsWithWritingDirection(selectionRect, renderer().document().deviceScaleFactor(), run.ltr()), c);
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}
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bool LegacyEllipsisBox::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom, HitTestAction hitTestAction)
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{
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LayoutPoint adjustedLocation = accumulatedOffset + LayoutPoint(topLeft());
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// Hit test the markup box.
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if (LegacyInlineBox* markupBox = this->markupBox()) {
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const RenderStyle& lineStyle = this->lineStyle();
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LayoutUnit mtx { adjustedLocation.x() + logicalWidth() - markupBox->x() };
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LayoutUnit mty { adjustedLocation.y() + lineStyle.fontMetrics().ascent() - (markupBox->y() + markupBox->lineStyle().fontMetrics().ascent()) };
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if (markupBox->nodeAtPoint(request, result, locationInContainer, LayoutPoint(mtx, mty), lineTop, lineBottom, hitTestAction)) {
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blockFlow().updateHitTestResult(result, locationInContainer.point() - LayoutSize(mtx, mty));
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return true;
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}
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}
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auto boundsRect = LayoutRect { adjustedLocation, LayoutSize(LayoutUnit(logicalWidth()), m_height) };
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if (visibleToHitTesting(request) && locationInContainer.intersects(boundsRect)) {
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blockFlow().updateHitTestResult(result, locationInContainer.point() - toLayoutSize(adjustedLocation));
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if (result.addNodeToListBasedTestResult(blockFlow().nodeForHitTest(), request, locationInContainer, boundsRect) == HitTestProgress::Stop)
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return true;
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}
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return false;
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}
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} // namespace WebCore
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