2 * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB. If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
21 #ifndef RenderSlider_h
22 #define RenderSlider_h
24 #include "RenderBlock.h"
28 class HTMLInputElement;
30 class SliderThumbElement;
32 class RenderSlider : public RenderBlock {
34 RenderSlider(HTMLInputElement*);
35 virtual ~RenderSlider();
37 void forwardEvent(Event*);
38 bool inDragMode() const;
42 virtual const char* renderName() const { return "RenderSlider"; }
43 virtual bool isSlider() const { return true; }
45 virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const;
46 virtual void computePreferredLogicalWidths();
47 virtual void layout();
49 // FIXME: Eventually, the logic of manipulating slider thumb should move to
50 // SliderThumbElement and accessing sliderThumbElement should not be necessary in this class.
51 SliderThumbElement* sliderThumbElement() const;
52 bool mouseEventIsInThumb(MouseEvent*);
53 FloatPoint mouseEventOffsetToThumb(MouseEvent*);
55 void setValueForPosition(int position);
56 void setPositionFromValue();
57 int positionForOffset(const IntPoint&);
59 int currentPosition();
61 virtual bool requiresForcedStyleRecalcPropagation() const { return true; }
65 friend class SliderThumbElement;
68 inline RenderSlider* toRenderSlider(RenderObject* object)
70 ASSERT(!object || object->isSlider());
71 return static_cast<RenderSlider*>(object);
74 // This will catch anyone doing an unnecessary cast.
75 void toRenderSlider(const RenderSlider*);
77 } // namespace WebCore
79 #endif // RenderSlider_h