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/**
* Copyright (C) 2003, 2006 Apple Inc.
*
* 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 "EllipsisBox.h"
#include "Document.h"
#include "FontCascade.h"
#include "GraphicsContext.h"
#include "HitTestResult.h"
#include "InlineTextBox.h"
#include "PaintInfo.h"
#include "RootInlineBox.h"
#include "TextRun.h"
namespace WebCore {
EllipsisBox::EllipsisBox(RenderBlockFlow& renderer, const AtomicString& ellipsisStr, InlineFlowBox* parent, int width, int height, int y, bool firstLine, bool isVertical, InlineBox* markupBox)
: InlineElementBox(renderer, FloatPoint(0, y), width, firstLine, true, false, false, isVertical, 0, 0, parent)
, m_shouldPaintMarkupBox(markupBox)
, m_height(height)
, m_str(ellipsisStr)
, m_selectionState(RenderObject::SelectionNone)
{
}
void EllipsisBox::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom)
{
GraphicsContext& context = paintInfo.context();
const RenderStyle& lineStyle = this->lineStyle();
Color textColor = lineStyle.visitedDependentColor(CSSPropertyWebkitTextFillColor);
if (textColor != context.fillColor())
context.setFillColor(textColor);
bool setShadow = false;
if (lineStyle.textShadow()) {
context.setShadow(LayoutSize(lineStyle.textShadow()->x(), lineStyle.textShadow()->y()),
lineStyle.textShadow()->radius(), lineStyle.textShadow()->color());
setShadow = true;
}
const FontCascade& font = lineStyle.fontCascade();
if (selectionState() != RenderObject::SelectionNone) {
paintSelection(context, paintOffset, lineStyle, font);
// Select the correct color for painting the text.
Color foreground = paintInfo.forceTextColor() ? paintInfo.forcedTextColor() : blockFlow().selectionForegroundColor();
if (foreground.isValid() && foreground != textColor)
context.setFillColor(foreground);
}
// FIXME: Why is this always LTR? Fix by passing correct text run flags below.
context.drawText(font, RenderBlock::constructTextRun(&blockFlow(), font, m_str, lineStyle, AllowTrailingExpansion), LayoutPoint(x() + paintOffset.x(), y() + paintOffset.y() + lineStyle.fontMetrics().ascent()));
// Restore the regular fill color.
if (textColor != context.fillColor())
context.setFillColor(textColor);
if (setShadow)
context.clearShadow();
paintMarkupBox(paintInfo, paintOffset, lineTop, lineBottom, lineStyle);
}
InlineBox* EllipsisBox::markupBox() const
{
if (!m_shouldPaintMarkupBox)
return 0;
RootInlineBox* lastLine = blockFlow().lineAtIndex(blockFlow().lineCount() - 1);
if (!lastLine)
return 0;
// If the last line-box on the last line of a block is a link, -webkit-line-clamp paints that box after the ellipsis.
// It does not actually move the link.
InlineBox* anchorBox = lastLine->lastChild();
if (!anchorBox || !anchorBox->renderer().style().isLink())
return 0;
return anchorBox;
}
void EllipsisBox::paintMarkupBox(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom, const RenderStyle& style)
{
InlineBox* markupBox = this->markupBox();
if (!markupBox)
return;
LayoutPoint adjustedPaintOffset = paintOffset;
adjustedPaintOffset.move(x() + m_logicalWidth - markupBox->x(),
y() + style.fontMetrics().ascent() - (markupBox->y() + markupBox->lineStyle().fontMetrics().ascent()));
markupBox->paint(paintInfo, adjustedPaintOffset, lineTop, lineBottom);
}
IntRect EllipsisBox::selectionRect()
{
const RenderStyle& lineStyle = this->lineStyle();
const FontCascade& font = lineStyle.fontCascade();
const RootInlineBox& rootBox = root();
// FIXME: Why is this always LTR? Fix by passing correct text run flags below.
LayoutRect selectionRect = LayoutRect(x(), y() + rootBox.selectionTopAdjustedForPrecedingBlock(), 0, rootBox.selectionHeightAdjustedForPrecedingBlock());
font.adjustSelectionRectForText(RenderBlock::constructTextRun(&blockFlow(), font, m_str, lineStyle, AllowTrailingExpansion), selectionRect);
// FIXME: use directional pixel snapping instead.
return enclosingIntRect(selectionRect);
}
void EllipsisBox::paintSelection(GraphicsContext& context, const LayoutPoint& paintOffset, const RenderStyle& style, const FontCascade& font)
{
Color textColor = style.visitedDependentColor(CSSPropertyColor);
Color c = blockFlow().selectionBackgroundColor();
if (!c.isValid() || !c.alpha())
return;
// If the text color ends up being the same as the selection background, invert the selection
// background.
if (textColor == c)
c = Color(0xff - c.red(), 0xff - c.green(), 0xff - c.blue());
const RootInlineBox& rootBox = root();
GraphicsContextStateSaver stateSaver(context);
// FIXME: Why is this always LTR? Fix by passing correct text run flags below.
LayoutRect selectionRect = LayoutRect(x() + paintOffset.x(), y() + paintOffset.y() + rootBox.selectionTop(), 0, rootBox.selectionHeight());
TextRun run = RenderBlock::constructTextRun(&blockFlow(), font, m_str, style, AllowTrailingExpansion);
font.adjustSelectionRectForText(run, selectionRect, 0, -1);
context.fillRect(snapRectToDevicePixelsWithWritingDirection(selectionRect, renderer().document().deviceScaleFactor(), run.ltr()), c);
}
bool EllipsisBox::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, LayoutUnit lineTop, LayoutUnit lineBottom, HitTestAction hitTestAction)
{
LayoutPoint adjustedLocation = accumulatedOffset + LayoutPoint(topLeft());
// Hit test the markup box.
if (InlineBox* markupBox = this->markupBox()) {
const RenderStyle& lineStyle = this->lineStyle();
LayoutUnit mtx = adjustedLocation.x() + m_logicalWidth - markupBox->x();
LayoutUnit mty = adjustedLocation.y() + lineStyle.fontMetrics().ascent() - (markupBox->y() + markupBox->lineStyle().fontMetrics().ascent());
if (markupBox->nodeAtPoint(request, result, locationInContainer, LayoutPoint(mtx, mty), lineTop, lineBottom, hitTestAction)) {
blockFlow().updateHitTestResult(result, locationInContainer.point() - LayoutSize(mtx, mty));
return true;
}
}
LayoutRect boundsRect(adjustedLocation, LayoutSize(m_logicalWidth, m_height));
if (visibleToHitTesting() && boundsRect.intersects(HitTestLocation::rectForPoint(locationInContainer.point(), 0, 0, 0, 0))) {
blockFlow().updateHitTestResult(result, locationInContainer.point() - toLayoutSize(adjustedLocation));
if (!result.addNodeToRectBasedTestResult(blockFlow().element(), request, locationInContainer, boundsRect))
return true;
}
return false;
}
} // namespace WebCore
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