1 /*

     2 * Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 *

     5 * This program is free software: you can redistribute it and/or modify

     6 * it under the terms of the GNU Lesser General Public License as published by

     7 * the Free Software Foundation, version 2.1 of the License.

     8 *

     9 * This program 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

    12 * GNU Lesser General Public License for more details.

    13 *

    14 * You should have received a copy of the GNU Lesser General Public License

    15 * along with this program.  If not,

    16 * see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".

    17 *

    18 * Description:

    19 *

    20 */

    21 

    22 #ifndef ViewportMetaData_h

    23 #define ViewportMetaData_h

    24 

    25 #include <QFlags>

    26 #include <QObject>

    27 #include <QRect>

    28 

    29 namespace GVA {

    30 

    31 struct ParsedViewportData{

    32     QString m_width;

    33     QString m_height;

    34     qreal m_minScale;

    35 };

    36 

    37 class ViewportMetaData {

    38 public:

    39     enum {

    40         ValueUndefined = -1

    41     };

    42 

    43     enum ScaleLimit {

    44         UserDefinedMinumumScale = 0x1,

    45         UserDefinedMaximumScale = 0x2,

    46         UserDefinedInitialScale = 0x4,

    47     };

    48     Q_DECLARE_FLAGS(ScaleLimits, ScaleLimit)

    49 

    50     ViewportMetaData();

    51     ViewportMetaData(const ViewportMetaData&);

    52     ViewportMetaData& operator=(const ViewportMetaData&);

    53     ~ViewportMetaData();

    54 

    55     void adjustViewportData(const QRect& clientRect);

    56     void updateViewportData(const QSize& size, const QRect& clientRect);

    57     void orientationChanged(const QRect& newClientRect);

    58     bool isLayoutNeeded();

    59     void reset() {initialize();}

    60 

    61     void setFlag(ScaleLimit scaleLimit, bool enable)

    62     {

    63         if (enable)

    64             m_scaleLimits |= scaleLimit;

    65         else

    66             m_scaleLimits &= !scaleLimit;

    67     }

    68 

    69     bool getFlag(ScaleLimit scaleLimit)

    70     {

    71         return m_scaleLimits.testFlag(scaleLimit);

    72     }

    73 

    74 protected:

    75     void initialize();

    76     void adjustZoomValues(const QRect& clientRect);

    77     bool isUserSpecifiedWidth();

    78     bool isUserSpecifiedHeight();

    79 

    80 public:

    81     qreal m_initialScale;

    82     qreal m_minimumScale;

    83     qreal m_maximumScale;

    84     int m_width;

    85     int m_height;

    86     bool m_userScalable;

    87     ScaleLimits m_scaleLimits;

    88     bool m_isValid;

    89     ParsedViewportData m_specifiedData;

    90 };//ViewportMetaData

    91 

    92 Q_DECLARE_OPERATORS_FOR_FLAGS(ViewportMetaData::ScaleLimits)

    93 

    94 } //namespace GVA

    95 

    96 #endif //ViewportMetaData_h