Move paint code from RootInlineBox and EllipsisBox to RootInlineBoxPainter and EllipsisBoxPainter.

Source/core/paint/EllipsisBoxPainter.cpp

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "core/paint/EllipsisBoxPainter.h"
+
+#include "core/rendering/EllipsisBox.h"
+#include "core/rendering/InlineTextBox.h"
+#include "core/rendering/PaintInfo.h"
+#include "core/rendering/RootInlineBox.h"
+#include "core/rendering/TextPainter.h"
+#include "core/rendering/TextRunConstructor.h"
+#include "platform/graphics/GraphicsContextStateSaver.h"
+
+namespace blink {
+
+void EllipsisBoxPainter::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom)
+{
+    GraphicsContext* context = paintInfo.context;
+    RenderStyle* style = m_ellipsisBox.renderer().style(m_ellipsisBox.isFirstLineStyle());
+    const Font& font = style->font();
+    FloatPoint boxOrigin = m_ellipsisBox.locationIncludingFlipping();
+    boxOrigin.moveBy(FloatPoint(paintOffset));
+    if (!m_ellipsisBox.isHorizontal())
+        boxOrigin.move(0, -m_ellipsisBox.virtualLogicalHeight());
+    FloatRect boxRect(boxOrigin, LayoutSize(m_ellipsisBox.logicalWidth(), m_ellipsisBox.virtualLogicalHeight()));
+    GraphicsContextStateSaver stateSaver(*context);
+    if (!m_ellipsisBox.isHorizontal())
+        context->concatCTM(InlineTextBox::rotation(boxRect, InlineTextBox::Clockwise));
+    FloatPoint textOrigin(boxOrigin.x(), boxOrigin.y() + font.fontMetrics().ascent());
+
+    bool isPrinting = m_ellipsisBox.renderer().document().printing();
+    bool haveSelection = !isPrinting && paintInfo.phase != PaintPhaseTextClip && m_ellipsisBox.selectionState() != RenderObject::SelectionNone;
+
+    if (haveSelection)
+        paintSelection(context, boxOrigin, style, font);
+    else if (paintInfo.phase == PaintPhaseSelection)
+        return;
+
+    TextPainter::Style textStyle = TextPainter::textPaintingStyle(m_ellipsisBox.renderer(), style, paintInfo.forceBlackText(), isPrinting);
+    if (haveSelection)
+        textStyle = TextPainter::selectionPaintingStyle(m_ellipsisBox.renderer(), true, paintInfo.forceBlackText(), isPrinting, textStyle);
+
+    TextRun textRun = constructTextRun(&m_ellipsisBox.renderer(), font, m_ellipsisBox.ellipsisStr(), style, TextRun::AllowTrailingExpansion);
+    TextPainter textPainter(context, font, textRun, textOrigin, boxRect, m_ellipsisBox.isHorizontal());
+    textPainter.paint(0, m_ellipsisBox.ellipsisStr().length(), m_ellipsisBox.ellipsisStr().length(), textStyle);
+
+    paintMarkupBox(paintInfo, paintOffset, lineTop, lineBottom, style);
+}
+
+void EllipsisBoxPainter::paintMarkupBox(PaintInfo& paintInfo, const LayoutPoint& paintOffset, LayoutUnit lineTop, LayoutUnit lineBottom, RenderStyle* style)
+{
+    InlineBox* markupBox = m_ellipsisBox.markupBox();
+    if (!markupBox)
+        return;
+
+    LayoutPoint adjustedPaintOffset = paintOffset;
+    adjustedPaintOffset.move(m_ellipsisBox.x() + m_ellipsisBox.logicalWidth() - markupBox->x(),
+        m_ellipsisBox.y() + style->fontMetrics().ascent() - (markupBox->y() + markupBox->renderer().style(m_ellipsisBox.isFirstLineStyle())->fontMetrics().ascent()));
+    markupBox->paint(paintInfo, adjustedPaintOffset, lineTop, lineBottom);
+}
+
+void EllipsisBoxPainter::paintSelection(GraphicsContext* context, const FloatPoint& boxOrigin, RenderStyle* style, const Font& font)
+{
+    Color textColor = m_ellipsisBox.renderer().resolveColor(style, CSSPropertyColor);
+    Color c = m_ellipsisBox.renderer().selectionBackgroundColor();
+    if (!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());
+
+    GraphicsContextStateSaver stateSaver(*context);
+    LayoutUnit selectionBottom = m_ellipsisBox.root().selectionBottom();
+    LayoutUnit top = m_ellipsisBox.root().selectionTop();
+    LayoutUnit h = m_ellipsisBox.root().selectionHeight();
+    const int deltaY = roundToInt(m_ellipsisBox.renderer().style()->isFlippedLinesWritingMode() ? selectionBottom - m_ellipsisBox.logicalBottom() : m_ellipsisBox.logicalTop() - top);
+    const FloatPoint localOrigin(boxOrigin.x(), boxOrigin.y() - deltaY);
+    FloatRect clipRect(localOrigin, FloatSize(m_ellipsisBox.logicalWidth(), h.toFloat()));
+    context->clip(clipRect);
+    context->drawHighlightForText(font, constructTextRun(&m_ellipsisBox.renderer(), font, m_ellipsisBox.ellipsisStr(), style, TextRun::AllowTrailingExpansion), localOrigin, h, c);
+}
+
+} // namespace blink