1 /****************************************************************************

     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the Qt3Support module of the Qt Toolkit.

     8 **

     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #ifndef Q3DOCKAREA_H

    43 #define Q3DOCKAREA_H

    44 

    45 #include <QtGui/qwidget.h>

    46 #include <QtCore/qlist.h>

    47 #include <Qt3Support/q3dockwindow.h>

    48 #include <QtGui/qlayout.h>

    49 #include <QtCore/qpointer.h>

    50 

    51 QT_BEGIN_HEADER

    52 

    53 QT_BEGIN_NAMESPACE

    54 

    55 QT_MODULE(Qt3SupportLight)

    56 

    57 #ifndef QT_NO_MAINWINDOW

    58 

    59 class QBoxLayout;

    60 class Q3DockAreaLayout;

    61 class QMouseEvent;

    62 class Q3DockWindowResizeHandle;

    63 class Q3DockAreaPrivate;

    64 class QTextStream;

    65 

    66 class Q_COMPAT_EXPORT Q3DockAreaLayout : public QLayout

    67 {

    68     Q_OBJECT

    69     friend class Q3DockArea;

    70 

    71 public:

    72     Q3DockAreaLayout(QWidget* parent, Qt::Orientation o, QList<Q3DockWindow *> *wl, int space = -1, int margin = -1, const char *name = 0)

    73         : QLayout(parent), orient(o), dirty(true), dockWindows(wl), parentWidget(parent)

    74     {

    75         if (space != -1)

    76             setSpacing(space);

    77         if (margin != -1)

    78             setMargin(margin);

    79         setObjectName(QString::fromAscii(name));

    80         init();

    81     }

    82     ~Q3DockAreaLayout() {}

    83 

    84     void addItem(QLayoutItem *) {}

    85     bool hasHeightForWidth() const;

    86     int heightForWidth(int) const;

    87     int widthForHeight(int) const;

    88     QSize sizeHint() const;

    89     QSize minimumSize() const;

    90     QLayoutItem *itemAt(int) const;

    91     QLayoutItem *takeAt(int);

    92     int count() const;

    93     Qt::Orientations expandingDirections() const { return Qt::Orientations(0); }

    94     void invalidate();

    95     Qt::Orientation orientation() const { return orient; }

    96     QList<QRect> lineList() const { return lines; }

    97     QList<Q3DockWindow *> lineStarts() const { return ls; }

    98 

    99 protected:

   100     void setGeometry(const QRect&);

   101 

   102 private:

   103     Q_DISABLE_COPY(Q3DockAreaLayout)

   104 

   105     void init();

   106     int layoutItems(const QRect&, bool testonly = false);

   107     Qt::Orientation orient;

   108     bool dirty;

   109     int cached_width, cached_height;

   110     int cached_hfw, cached_wfh;

   111     QList<Q3DockWindow *> *dockWindows;

   112     QWidget *parentWidget;

   113     QList<QRect> lines;

   114     QList<Q3DockWindow *> ls;

   115 };

   116 

   117 class Q_COMPAT_EXPORT Q3DockArea : public QWidget

   118 {

   119     Q_OBJECT

   120     Q_ENUMS(HandlePosition)

   121     Q_PROPERTY(Qt::Orientation orientation READ orientation)

   122     Q_PROPERTY(int count READ count)

   123     Q_PROPERTY(bool empty READ isEmpty)

   124     Q_PROPERTY(HandlePosition handlePosition READ handlePosition)

   125 

   126     friend class Q3DockWindow;

   127     friend class Q3DockWindowResizeHandle;

   128     friend class Q3DockAreaLayout;

   129 

   130 public:

   131     enum HandlePosition { Normal, Reverse };

   132 

   133     Q3DockArea(Qt::Orientation o, HandlePosition h = Normal, QWidget* parent=0, const char* name=0);

   134     ~Q3DockArea();

   135 

   136     void moveDockWindow(Q3DockWindow *w, const QPoint &globalPos, const QRect &rect, bool swap);

   137     void removeDockWindow(Q3DockWindow *w, bool makeFloating, bool swap, bool fixNewLines = true);

   138     void moveDockWindow(Q3DockWindow *w, int index = -1);

   139     bool hasDockWindow(Q3DockWindow *w, int *index = 0);

   140 

   141     void invalidNextOffset(Q3DockWindow *dw);

   142 

   143     Qt::Orientation orientation() const { return orient; }

   144     HandlePosition handlePosition() const { return hPos; }

   145 

   146     bool eventFilter(QObject *, QEvent *);

   147     bool isEmpty() const;

   148     int count() const;

   149     QList<Q3DockWindow *> dockWindowList() const;

   150 

   151     bool isDockWindowAccepted(Q3DockWindow *dw);

   152     void setAcceptDockWindow(Q3DockWindow *dw, bool accept);

   153 

   154 public Q_SLOTS:

   155     void lineUp(bool keepNewLines);

   156 

   157 private:

   158     struct DockWindowData

   159     {

   160         int index;

   161         int offset;

   162         int line;

   163         QSize fixedExtent;

   164         QPointer<Q3DockArea> area;

   165     };

   166 

   167     int findDockWindow(Q3DockWindow *w);

   168     int lineOf(int index);

   169     DockWindowData *dockWindowData(Q3DockWindow *w);

   170     void dockWindow(Q3DockWindow *dockWindow, DockWindowData *data);

   171     void updateLayout();

   172     void invalidateFixedSizes();

   173     int maxSpace(int hint, Q3DockWindow *dw);

   174     void setFixedExtent(int d, Q3DockWindow *dw);

   175     bool isLastDockWindow(Q3DockWindow *dw);

   176 

   177 private:

   178     Q_DISABLE_COPY(Q3DockArea)

   179 

   180     Qt::Orientation orient;

   181     QList<Q3DockWindow *> dockWindows;

   182     Q3DockAreaLayout *layout;

   183     HandlePosition hPos;

   184     QList<Q3DockWindow *> forbiddenWidgets;

   185     Q3DockAreaPrivate *d;

   186 };

   187 

   188 #ifndef QT_NO_TEXTSTREAM

   189 Q_COMPAT_EXPORT QTextStream &operator<<(QTextStream &, const Q3DockArea &);

   190 Q_COMPAT_EXPORT QTextStream &operator>>(QTextStream &, Q3DockArea &);

   191 #endif

   192 

   193 #endif // QT_NO_MAINWINDOW

   194 

   195 QT_END_NAMESPACE

   196 

   197 QT_END_HEADER

   198 

   199 #endif // Q3DOCKAREA_H