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/*
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, version 2.1 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not,
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* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".
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*
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* Description:
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*
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*/
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#ifndef ViewportMetaData_h
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#define ViewportMetaData_h
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#include <QFlags>
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#include <QObject>
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#include <QRect>
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// Define VIEWPORT_ALWAYS_ALLOW_ZOOMING to force all content (particularly mobile content that
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// has UserScalable turned off) to be scalable. This makes such content more usable since our
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// default font is so small. If we switch to a larger default font this can be removed.
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#ifdef Q_WS_MAEMO_5
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#define VIEWPORT_ALWAYS_ALLOW_ZOOMING
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#endif
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namespace GVA {
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struct ParsedViewportData{
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QString m_width;
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QString m_height;
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qreal m_minScale;
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};
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class ViewportMetaData {
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public:
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enum {
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ValueUndefined = -1
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};
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enum ScaleLimit {
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UserDefinedMinumumScale = 0x1,
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UserDefinedMaximumScale = 0x2,
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UserDefinedInitialScale = 0x4,
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};
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Q_DECLARE_FLAGS(ScaleLimits, ScaleLimit)
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ViewportMetaData();
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ViewportMetaData(const ViewportMetaData&);
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ViewportMetaData& operator=(const ViewportMetaData&);
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~ViewportMetaData();
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void adjustViewportData(const QSizeF& clientRect);
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QSize getSpecifiedSize() const;
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void adjustZoomValues(const QSizeF& contentSize);
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void orientationChanged(const QSizeF& newClientRect);
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bool isLayoutNeeded();
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void reset() {initialize();}
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void setFlag(ScaleLimit scaleLimit, bool enable)
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{
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if (enable)
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m_scaleLimits |= scaleLimit;
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else
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m_scaleLimits &= !scaleLimit;
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}
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bool getFlag(ScaleLimit scaleLimit)
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{
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return m_scaleLimits.testFlag(scaleLimit);
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}
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protected:
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void initialize();
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bool isUserSpecifiedWidth();
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bool isUserSpecifiedHeight();
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public:
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qreal m_initialScale;
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qreal m_minimumScale;
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qreal m_maximumScale;
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int m_width;
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int m_height;
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bool m_userScalable;
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#ifdef VIEWPORT_ALWAYS_ALLOW_ZOOMING
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/// True indicates that "user-scalable=no" has been overridden.
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bool m_userScalableOverRidden;
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#endif
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ScaleLimits m_scaleLimits;
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bool m_isValid;
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ParsedViewportData m_specifiedData;
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int m_defaultViewportWidth;
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int m_defaultViewportHeight;
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int m_maxViewportWidth;
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int m_maxViewportHeight;
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};//ViewportMetaData
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Q_DECLARE_OPERATORS_FOR_FLAGS(ViewportMetaData::ScaleLimits)
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} //namespace GVA
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#endif //ViewportMetaData_h
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