author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 24 Sep 2009 12:53:48 +0300 | |
changeset 11 | c8a366e56285 |
parent 0 | dd21522fd290 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (C) 2004, 2006 Apple Computer, Inc. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#ifndef ScrollBar_h |
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#define ScrollBar_h |
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#include "Shared.h" |
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#include "ScrollTypes.h" |
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#include <wtf/MathExtras.h> |
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namespace WebCore { |
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class GraphicsContext; |
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class IntRect; |
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class Scrollbar; |
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class PlatformMouseEvent; |
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// These match the numbers we use over in WebKit (WebFrameView.m). |
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#define LINE_STEP 40 |
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#define PAGE_KEEP 40 |
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enum ScrollbarControlSize { RegularScrollbar, SmallScrollbar, MiniScrollbar }; |
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class ScrollbarClient { |
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public: |
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virtual ~ScrollbarClient() {} |
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virtual void valueChanged(Scrollbar*) = 0; |
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// Used to obtain a window clip rect. |
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virtual IntRect windowClipRect() const = 0; |
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}; |
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class Scrollbar : public Shared<Scrollbar> { |
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protected: |
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Scrollbar(ScrollbarClient*, ScrollbarOrientation, ScrollbarControlSize); |
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public: |
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virtual ~Scrollbar() {} |
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virtual bool isWidget() const = 0; |
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ScrollbarOrientation orientation() const { return m_orientation; } |
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int value() const { return lroundf(m_currentPos); } |
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ScrollbarControlSize controlSize() const { return m_controlSize; } |
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void setSteps(int lineStep, int pageStep, int pixelsPerStep = 1); |
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bool setValue(int); |
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void setProportion(int visibleSize, int totalSize); |
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bool scroll(ScrollDirection, ScrollGranularity, float multiplier = 1.0); |
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virtual int width() const = 0; |
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virtual int height() const = 0; |
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virtual void setRect(const IntRect&) = 0; |
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virtual void setEnabled(bool) = 0; |
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virtual void paint(GraphicsContext*, const IntRect& damageRect) = 0; |
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static bool hasPlatformScrollbars() { |
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// To use the platform's built-in scrollbars by default, return true. We may |
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// support styled engine scrollbars someday, and some platforms may wish to not |
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// implement a platform scrollbar at all by default. That's what this method is for. |
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return true; |
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} |
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// These methods are used for platform scrollbars to give :hover feedback. They will not get called |
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// when the mouse went down in a scrollbar, since it is assumed the scrollbar will start |
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// grabbing all events in that case anyway. |
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virtual bool handleMouseMoveEvent(const PlatformMouseEvent&) { return false; } |
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virtual bool handleMouseOutEvent(const PlatformMouseEvent&) { return false; } |
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// Used by some platform scrollbars to know when they've been released from capture. |
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virtual bool handleMouseReleaseEvent(const PlatformMouseEvent&) { return false; } |
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protected: |
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virtual void updateThumbPosition() = 0; |
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virtual void updateThumbProportion() = 0; |
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ScrollbarClient* client() const { return m_client; } |
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ScrollbarClient* m_client; |
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ScrollbarOrientation m_orientation; |
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ScrollbarControlSize m_controlSize; |
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int m_visibleSize; |
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int m_totalSize; |
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float m_currentPos; |
dd21522fd290
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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int m_lineStep; |
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Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com>
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int m_pageStep; |
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112 |
float m_pixelStep; |
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113 |
}; |
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} |
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#endif |