Move painting code from InlineTextBox to InlineTextBoxPainter.

Source/core/paint/InlineTextBoxPainter.h

+// 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.
+
+#ifndef InlineTextBoxPainter_h
+#define InlineTextBoxPainter_h
+
+#include "core/rendering/style/RenderStyleConstants.h"
+
+namespace blink {
+
+class Color;
+struct CompositionUnderline;
+class DocumentMarker;
+class FloatPoint;
+class Font;
+class GraphicsContext;
+struct PaintInfo;

[jbroman, 2014/10/03 17:46:17]

forward declaration sort order

[chrishtr, 2014/10/03 18:10:37]

Done.

[jbroman, 2014/10/03 18:18:26]

Hmm, I'd either expect this to be sorted with the Ps, or I'd expect both structs
(CompositionUnderline and PaintInfo) to be together. I've seen both in Blink
(and the style guide seems silent on the subject).

[chrishtr, 2014/10/03 18:37:46]

Fixed.

+class LayoutPoint;
+class InlineTextBox;
+class RenderStyle;
+
+class InlineTextBoxPainter {
+public:
+    InlineTextBoxPainter(InlineTextBox& inlineTextBox) : m_inlineTextBox(inlineTextBox) { }

[jbroman, 2014/10/03 17:46:17]

nit: Any reason this is a non-const ref? There are a handful of members it
accesses that are non-const, but most (maybe all) of them ought to be const.

I'm fine with leaving this for now if it's non-trivial to change.

[chrishtr, 2014/10/03 18:10:37]

const-ness is not preserved on some RenderObject methods, so in all of these
paint/ CLs I've been leaving it non-const.

+
+    void paint(PaintInfo&, const LayoutPoint&);
+    void paintDocumentMarkers(GraphicsContext*, const FloatPoint& boxOrigin, RenderStyle*, const Font&, bool background);
+    void paintDocumentMarker(GraphicsContext*, const FloatPoint& boxOrigin, DocumentMarker*, RenderStyle*, const Font&, bool grammar);
+    void paintTextMatchMarker(GraphicsContext*, const FloatPoint& boxOrigin, DocumentMarker*, RenderStyle*, const Font&);
+
+private:
+    void paintCompositionBackgrounds(GraphicsContext*, const FloatPoint& boxOrigin, RenderStyle*, const Font&, bool useCustomUnderlines);
+    void paintSingleCompositionBackgroundRun(GraphicsContext*, const FloatPoint& boxOrigin, RenderStyle*, const Font&, Color backgroundColor, int startPos, int endPos);
+    void paintSelection(GraphicsContext*, const FloatPoint& boxOrigin, RenderStyle*, const Font&, Color textColor);
+    void paintDecoration(GraphicsContext*, const FloatPoint& boxOrigin, TextDecoration);
+    void paintCompositionUnderline(GraphicsContext*, const FloatPoint& boxOrigin, const CompositionUnderline&);
+    unsigned underlinePaintStart(const CompositionUnderline&);
+    unsigned underlinePaintEnd(const CompositionUnderline&);
+
+    InlineTextBox& m_inlineTextBox;
+};
+
+} // namespace blink
+
+#endif // InlineTextBoxPainter_h