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/*
* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
* (C) 2000 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. 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 RenderSelectionInfo_h
#define RenderSelectionInfo_h
#include "core/rendering/RenderBox.h"
#include "platform/geometry/IntRect.h"
namespace WebCore {
class RenderSelectionInfoBase {
WTF_MAKE_NONCOPYABLE(RenderSelectionInfoBase); WTF_MAKE_FAST_ALLOCATED;
public:
RenderSelectionInfoBase()
: m_object(0)
, m_repaintContainer(0)
, m_state(RenderObject::SelectionNone)
{
}
RenderSelectionInfoBase(RenderObject* o)
: m_object(o)
, m_repaintContainer(o->containerForPaintInvalidation())
, m_state(o->selectionState())
{
}
RenderObject* object() const { return m_object; }
const RenderLayerModelObject* repaintContainer() const { return m_repaintContainer; }
RenderObject::SelectionState state() const { return m_state; }
protected:
RenderObject* m_object;
const RenderLayerModelObject* m_repaintContainer;
RenderObject::SelectionState m_state;
};
// This struct is used when the selection changes to cache the old and new state of the selection for each RenderObject.
class RenderSelectionInfo : public RenderSelectionInfoBase {
public:
RenderSelectionInfo(RenderObject* o, bool clipToVisibleContent)
: RenderSelectionInfoBase(o)
{
if (o->canUpdateSelectionOnRootLineBoxes()) {
m_rect = o->selectionRectForPaintInvalidation(m_repaintContainer, clipToVisibleContent);
// FIXME: groupedMapping() leaks the squashing abstraction. See RenderBlockSelectionInfo for more details.
if (m_repaintContainer && m_repaintContainer->groupedMapping())
RenderLayer::mapRectToRepaintBacking(m_repaintContainer, m_repaintContainer, m_rect);
} else {
m_rect = LayoutRect();
}
}
void repaint()
{
m_object->invalidatePaintUsingContainer(m_repaintContainer, enclosingIntRect(m_rect), InvalidationSelection);
}
LayoutRect rect() const { return m_rect; }
private:
LayoutRect m_rect; // relative to repaint container
};
// This struct is used when the selection changes to cache the old and new state of the selection for each RenderBlock.
class RenderBlockSelectionInfo : public RenderSelectionInfoBase {
public:
RenderBlockSelectionInfo(RenderBlock* b)
: RenderSelectionInfoBase(b)
{
if (b->canUpdateSelectionOnRootLineBoxes())
m_rects = block()->selectionGapRectsForRepaint(m_repaintContainer);
else
m_rects = GapRects();
}
void repaint()
{
LayoutRect repaintRect = enclosingIntRect(m_rects);
// FIXME: this is leaking the squashing abstraction. However, removing the groupedMapping() condiitional causes
// RenderBox::mapRectToRepaintBacking to get called, which makes rect adjustments even if you pass the same
// repaintContainer as the render object. Find out why it does that and fix.
if (m_repaintContainer && m_repaintContainer->groupedMapping())
RenderLayer::mapRectToRepaintBacking(m_repaintContainer, m_repaintContainer, repaintRect);
m_object->invalidatePaintUsingContainer(m_repaintContainer, enclosingIntRect(repaintRect), InvalidationSelection);
}
RenderBlock* block() const { return toRenderBlock(m_object); }
GapRects rects() const { return m_rects; }
private:
GapRects m_rects; // relative to repaint container
};
} // namespace WebCore
#endif // RenderSelectionInfo_h
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