summaryrefslogtreecommitdiffstats
path: root/src/gui/widgets/qdockarealayout_p.h
blob: 7c5bd184a1630c68d24c552ff34c78422b0ff741 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QDOCKAREALAYOUT_P_H
#define QDOCKAREALAYOUT_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "QtCore/qrect.h"
#include "QtCore/qpair.h"
#include "QtCore/qlist.h"
#include "QtCore/qvector.h"
#include "QtGui/qlayout.h"

#ifndef QT_NO_DOCKWIDGET

QT_BEGIN_NAMESPACE

class QLayoutItem;
class QWidget;
class QLayoutItem;
class QDockAreaLayoutInfo;
class QPlaceHolderItem;
class QDockWidget;
class QMainWindow;
class QWidgetAnimator;
class QMainWindowLayout;
struct QLayoutStruct;
class QTabBar;

// The classes in this file represent the tree structure that represents all the docks
// Also see the wiki internal documentation
// At the root of the tree is: QDockAreaLayout, which handles all 4 sides, so there is only one.
// For each side it has one QDockAreaLayoutInfo child. (See QDockAreaLayout::docks.)
// The QDockAreaLayoutInfo have QDockAreaLayoutItems as children (See QDockAreaLayoutInfo::item_list),
// which then has one QDockAreaLayoutInfo as a child. (QDockAreaLayoutItem::subInfo) or
// a widgetItem if this is a node of the tree (QDockAreaLayoutItem::widgetItem)
//
// A path indetifies uniquely one object in this tree, the first number beeing the side and all the following
// indexes into the QDockAreaLayoutInfo::item_list.

struct QDockAreaLayoutItem
{
    enum ItemFlags { NoFlags = 0, GapItem = 1, KeepSize = 2 };

    QDockAreaLayoutItem(QLayoutItem *_widgetItem = 0);
    QDockAreaLayoutItem(QDockAreaLayoutInfo *_subinfo);
    QDockAreaLayoutItem(QPlaceHolderItem *_placeHolderItem);
    QDockAreaLayoutItem(const QDockAreaLayoutItem &other);
    ~QDockAreaLayoutItem();

    QDockAreaLayoutItem &operator = (const QDockAreaLayoutItem &other);

    bool skip() const;
    QSize minimumSize() const;
    QSize maximumSize() const;
    QSize sizeHint() const;
    bool expansive(Qt::Orientation o) const;

    QLayoutItem *widgetItem;
    QDockAreaLayoutInfo *subinfo;
    QPlaceHolderItem *placeHolderItem;
    int pos;
    int size;
    uint flags;
};

class Q_AUTOTEST_EXPORT QPlaceHolderItem
{
public:
    QPlaceHolderItem() : hidden(false), window(false) {}
    QPlaceHolderItem(QWidget *w);

    QString objectName;
    bool hidden, window;
    QRect topLevelRect;
};

class Q_AUTOTEST_EXPORT QDockAreaLayoutInfo
{
public:
    QDockAreaLayoutInfo();
    QDockAreaLayoutInfo(int _sep, QInternal::DockPosition _dockPos, Qt::Orientation _o,
                        int tbhape, QMainWindow *window);

    QSize minimumSize() const;
    QSize maximumSize() const;
    QSize sizeHint() const;
    QSize size() const;

    bool insertGap(QList<int> path, QLayoutItem *dockWidgetItem);
    QLayoutItem *plug(QList<int> path);
    QLayoutItem *unplug(QList<int> path);
    enum TabMode { NoTabs, AllowTabs, ForceTabs };
    QList<int> gapIndex(const QPoint &pos, bool nestingEnabled,
                            TabMode tabMode) const;
    void remove(QList<int> path);
    void unnest(int index);
    void split(int index, Qt::Orientation orientation, QLayoutItem *dockWidgetItem);
    void tab(int index, QLayoutItem *dockWidgetItem);
    QDockAreaLayoutItem &item(QList<int> path);
    QDockAreaLayoutInfo *info(QList<int> path);
    QDockAreaLayoutInfo *info(QWidget *widget);

    enum { // sentinel values used to validate state data
        SequenceMarker = 0xfc,
        TabMarker = 0xfa,
        WidgetMarker = 0xfb
    };
    void saveState(QDataStream &stream) const;
    bool restoreState(QDataStream &stream, QList<QDockWidget*> &widgets, bool testing);

    void fitItems();
    bool expansive(Qt::Orientation o) const;
    int changeSize(int index, int size, bool below);
    QRect itemRect(int index) const;
    QRect itemRect(QList<int> path) const;
    QRect separatorRect(int index) const;
    QRect separatorRect(QList<int> path) const;

    void clear();
    bool isEmpty() const;
    QList<int> findSeparator(const QPoint &pos) const;
    int next(int idx) const;
    int prev(int idx) const;

    QList<int> indexOf(QWidget *widget) const;
    QList<int> indexOfPlaceHolder(const QString &objectName) const;

    void apply(bool animate);

    void paintSeparators(QPainter *p, QWidget *widget, const QRegion &clip,
                            const QPoint &mouse) const;
    QRegion separatorRegion() const;
    int separatorMove(int index, int delta, QVector<QLayoutStruct> *cache);

    QLayoutItem *itemAt(int *x, int index) const;
    QLayoutItem *takeAt(int *x, int index);
    void deleteAllLayoutItems();

    QMainWindowLayout *mainWindowLayout() const;

    int sep;
    QVector<QWidget*> separatorWidgets;
    QInternal::DockPosition dockPos;
    Qt::Orientation o;
    QRect rect;
    QMainWindow *mainWindow;
    QList<QDockAreaLayoutItem> item_list;

    void updateSeparatorWidgets() const;
    QSet<QWidget*> usedSeparatorWidgets() const;

#ifndef QT_NO_TABBAR
    quintptr currentTabId() const;
    void setCurrentTab(QWidget *widget);
    void setCurrentTabId(quintptr id);
    QRect tabContentRect() const;
    bool tabbed;
    QTabBar *tabBar;
    QSize tabBarMin, tabBarHint;
    int tabBarShape;
    bool tabBarVisible;

    void updateTabBar() const;
    void setTabBarShape(int shape);
    QSize tabBarMinimumSize() const;
    QSize tabBarSizeHint() const;

    QSet<QTabBar*> usedTabBars() const;
#endif // QT_NO_TABBAR
};

class Q_AUTOTEST_EXPORT QDockAreaLayout
{
public:
    enum { EmptyDropAreaSize = 80 }; // when a dock area is empty, how "wide" is it?

    Qt::DockWidgetArea corners[4]; // use a Qt::Corner for indexing
    QRect rect;
    QLayoutItem *centralWidgetItem;
    QMainWindow *mainWindow;
    QRect centralWidgetRect;
    QDockAreaLayout(QMainWindow *win);
    QDockAreaLayoutInfo docks[4];
    int sep; // separator extent
    QVector<QWidget*> separatorWidgets;

    bool isValid() const;

    enum { DockWidgetStateMarker = 0xfd };
    void saveState(QDataStream &stream) const;
    bool restoreState(QDataStream &stream, const QList<QDockWidget*> &widgets, bool testing = false);

    QList<int> indexOfPlaceHolder(const QString &objectName) const;
    QList<int> indexOf(QWidget *dockWidget) const;
    QList<int> gapIndex(const QPoint &pos) const;
    QList<int> findSeparator(const QPoint &pos) const;

    QDockAreaLayoutItem &item(QList<int> path);
    QDockAreaLayoutInfo *info(QList<int> path);
    const QDockAreaLayoutInfo *info(QList<int> path) const;
    QDockAreaLayoutInfo *info(QWidget *widget);
    QRect itemRect(QList<int> path) const;
    QRect separatorRect(int index) const;
    QRect separatorRect(QList<int> path) const;

    bool insertGap(QList<int> path, QLayoutItem *dockWidgetItem);
    QLayoutItem *plug(QList<int> path);
    QLayoutItem *unplug(QList<int> path);
    void remove(QList<int> path);

    void fitLayout();

    void clear();

    QSize sizeHint() const;
    QSize minimumSize() const;

    void addDockWidget(QInternal::DockPosition pos, QDockWidget *dockWidget, Qt::Orientation orientation);
    bool restoreDockWidget(QDockWidget *dockWidget);
    void splitDockWidget(QDockWidget *after, QDockWidget *dockWidget,
                         Qt::Orientation orientation);
    void tabifyDockWidget(QDockWidget *first, QDockWidget *second);

    void apply(bool animate);

    void paintSeparators(QPainter *p, QWidget *widget, const QRegion &clip,
                            const QPoint &mouse) const;
    QRegion separatorRegion() const;
    int separatorMove(QList<int> separator, const QPoint &origin, const QPoint &dest,
                        QVector<QLayoutStruct> *cache);
    void updateSeparatorWidgets() const;

    QLayoutItem *itemAt(int *x, int index) const;
    QLayoutItem *takeAt(int *x, int index);
    void deleteAllLayoutItems();

    void getGrid(QVector<QLayoutStruct> *ver_struct_list,
                    QVector<QLayoutStruct> *hor_struct_list);
    void setGrid(QVector<QLayoutStruct> *ver_struct_list,
                    QVector<QLayoutStruct> *hor_struct_list);

    QRect gapRect(QList<int> path) const;

    void keepSize(QDockWidget *w);

    QSet<QTabBar*> usedTabBars() const;
    QSet<QWidget*> usedSeparatorWidgets() const;
};

QT_END_NAMESPACE

#endif // QT_NO_QDOCKWIDGET

#endif // QDOCKAREALAYOUT_P_H