Move LineLayoutState class into rendering/line

Source/core/rendering/line/LineLayoutState.h

+/*
+ * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
+ * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All right reserved.
+ * Copyright (C) 2010 Google Inc. All rights reserved.
+ * Copyright (C) 2014 Adobe Systems Incorporated. All rights reserved.
+ *
+ * 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.
+ *
+ */
+
+#ifndef LineLayoutState_h
+#define LineLayoutState_h
+
+#include "core/rendering/RenderBlockFlow.h"
+#include "platform/geometry/LayoutRect.h"
+
+namespace WebCore {
+
+class RenderBlockFlow;
+
+// Like LayoutState for layout(), LineLayoutState keeps track of global information
+// during an entire linebox tree layout pass (aka layoutInlineChildren).
+class LineLayoutState {
+public:
+    LineLayoutState(bool fullLayout, LayoutUnit& repaintLogicalTop, LayoutUnit& repaintLogicalBottom, RenderFlowThread* flowThread)
+        : m_lastFloat(0)
+        , m_endLine(0)
+        , m_floatIndex(0)
+        , m_endLineLogicalTop(0)
+        , m_endLineMatched(false)
+        , m_checkForFloatsFromLastLine(false)
+        , m_isFullLayout(fullLayout)
+        , m_repaintLogicalTop(repaintLogicalTop)
+        , m_repaintLogicalBottom(repaintLogicalBottom)
+        , m_adjustedLogicalLineTop(0)
+        , m_usesRepaintBounds(false)
+        , m_flowThread(flowThread)
+    { }
+
+    void markForFullLayout() { m_isFullLayout = true; }
+    bool isFullLayout() const { return m_isFullLayout; }
+
+    bool usesRepaintBounds() const { return m_usesRepaintBounds; }
+
+    void setRepaintRange(LayoutUnit logicalHeight)
+    {
+        m_usesRepaintBounds = true;
+        m_repaintLogicalTop = m_repaintLogicalBottom = logicalHeight;
+    }
+
+    void updateRepaintRangeFromBox(RootInlineBox* box, LayoutUnit paginationDelta = 0)
+    {
+        m_usesRepaintBounds = true;
+        m_repaintLogicalTop = min(m_repaintLogicalTop, box->logicalTopVisualOverflow() + min<LayoutUnit>(paginationDelta, 0));
+        m_repaintLogicalBottom = max(m_repaintLogicalBottom, box->logicalBottomVisualOverflow() + max<LayoutUnit>(paginationDelta, 0));
+    }
+
+    bool endLineMatched() const { return m_endLineMatched; }
+    void setEndLineMatched(bool endLineMatched) { m_endLineMatched = endLineMatched; }
+
+    bool checkForFloatsFromLastLine() const { return m_checkForFloatsFromLastLine; }
+    void setCheckForFloatsFromLastLine(bool check) { m_checkForFloatsFromLastLine = check; }
+
+    LineInfo& lineInfo() { return m_lineInfo; }
+    const LineInfo& lineInfo() const { return m_lineInfo; }
+
+    LayoutUnit endLineLogicalTop() const { return m_endLineLogicalTop; }
+    void setEndLineLogicalTop(LayoutUnit logicalTop) { m_endLineLogicalTop = logicalTop; }
+
+    RootInlineBox* endLine() const { return m_endLine; }
+    void setEndLine(RootInlineBox* line) { m_endLine = line; }
+
+    FloatingObject* lastFloat() const { return m_lastFloat; }
+    void setLastFloat(FloatingObject* lastFloat) { m_lastFloat = lastFloat; }
+
+    Vector<RenderBlockFlow::FloatWithRect>& floats() { return m_floats; }
+
+    unsigned floatIndex() const { return m_floatIndex; }
+    void setFloatIndex(unsigned floatIndex) { m_floatIndex = floatIndex; }
+
+    LayoutUnit adjustedLogicalLineTop() const { return m_adjustedLogicalLineTop; }
+    void setAdjustedLogicalLineTop(LayoutUnit value) { m_adjustedLogicalLineTop = value; }
+
+    RenderFlowThread* flowThread() const { return m_flowThread; }
+    void setFlowThread(RenderFlowThread* thread) { m_flowThread = thread; }
+
+private:
+    Vector<RenderBlockFlow::FloatWithRect> m_floats;
+    FloatingObject* m_lastFloat;
+    RootInlineBox* m_endLine;
+    LineInfo m_lineInfo;
+    unsigned m_floatIndex;
+    LayoutUnit m_endLineLogicalTop;
+    bool m_endLineMatched;
+    bool m_checkForFloatsFromLastLine;
+
+    bool m_isFullLayout;
+
+    // FIXME: Should this be a range object instead of two ints?
+    LayoutUnit& m_repaintLogicalTop;
+    LayoutUnit& m_repaintLogicalBottom;
+
+    LayoutUnit m_adjustedLogicalLineTop;
+
+    bool m_usesRepaintBounds;
+
+    RenderFlowThread* m_flowThread;
+};
+
+}
+
+#endif // LineLayoutState_h