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/*
* Copyright (C) 2011, 2012 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2011 Benjamin Poulain <benjamin@webkit.org>
* Copyright (C) 2014 Igalia S.L.
*
* 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 program 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 program; 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 SimpleViewportController_h
#define SimpleViewportController_h
#if USE(COORDINATED_GRAPHICS_THREADED)
#include <WebCore/FloatPoint.h>
#include <WebCore/FloatRect.h>
#include <WebCore/FloatSize.h>
#include <WebCore/IntRect.h>
#include <WebCore/IntSize.h>
#include <WebCore/ViewportArguments.h>
#include <wtf/Noncopyable.h>
namespace WebKit {
class SimpleViewportController {
WTF_MAKE_NONCOPYABLE(SimpleViewportController);
public:
class Client {
public:
virtual void didChangeVisibleRect() = 0;
};
explicit SimpleViewportController(Client*);
void didChangeViewportSize(const WebCore::FloatSize&);
void didChangeContentsSize(const WebCore::IntSize&);
void didChangeViewportAttribute(const WebCore::ViewportAttributes&);
void scrollBy(const WebCore::IntSize&);
void scrollTo(const WebCore::IntPoint&);
WebCore::FloatRect visibleContentsRect() const;
float pageScaleFactor() const { return m_pageScaleFactor; }
private:
WebCore::FloatSize visibleContentsSize() const;
void syncVisibleContents();
void applyScaleAfterRenderingContents(float scale);
void applyPositionAfterRenderingContents(const WebCore::FloatPoint& pos);
WebCore::FloatPoint boundContentsPosition(const WebCore::FloatPoint&) const;
WebCore::FloatPoint boundContentsPositionAtScale(const WebCore::FloatPoint&, float scale) const;
bool updateMinimumScaleToFit();
float innerBoundedViewportScale(float) const;
void resetViewportToDefaultState();
Client* m_client;
WebCore::FloatPoint m_contentsPosition;
WebCore::FloatSize m_contentsSize;
WebCore::FloatSize m_viewportSize;
float m_pageScaleFactor;
bool m_allowsUserScaling;
float m_minimumScaleToFit;
bool m_initiallyFitToViewport;
bool m_hasViewportAttribute;
WebCore::ViewportAttributes m_rawAttributes;
};
} // namespace WebKit
#endif // USE(COORDINATED_GRAPHICS_THREADED)
#endif // SimpleViewportController_h
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