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1/**************************************************************************** 1/****************************************************************************
2** $Id$ 2** $Id$
3** 3**
4** Splitter widget 4** Splitter widget
5** 5**
6** Created: 980105 6** Created: 980105
7** 7**
8** Copyright (C) 1992-2000 Trolltech AS. All rights reserved. 8** Copyright (C) 1992-2000 Trolltech AS. All rights reserved.
9** 9**
10** This file is part of the widgets module of the Qt GUI Toolkit. 10** This file is part of the widgets module of the Qt GUI Toolkit.
11** 11**
12** This file may be distributed under the terms of the Q Public License 12** This file may be distributed under the terms of the Q Public License
13** as defined by Trolltech AS of Norway and appearing in the file 13** as defined by Trolltech AS of Norway and appearing in the file
14** LICENSE.QPL included in the packaging of this file. 14** LICENSE.QPL included in the packaging of this file.
15** 15**
16** This file may be distributed and/or modified under the terms of the 16** This file may be distributed and/or modified under the terms of the
17** GNU General Public License version 2 as published by the Free Software 17** GNU General Public License version 2 as published by the Free Software
18** Foundation and appearing in the file LICENSE.GPL included in the 18** Foundation and appearing in the file LICENSE.GPL included in the
19** packaging of this file. 19** packaging of this file.
20** 20**
21** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition 21** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
22** licenses may use this file in accordance with the Qt Commercial License 22** licenses may use this file in accordance with the Qt Commercial License
23** Agreement provided with the Software. 23** Agreement provided with the Software.
24** 24**
25** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE 25** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
26** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 26** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
27** 27**
28** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for 28** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
29** information about Qt Commercial License Agreements. 29** information about Qt Commercial License Agreements.
30** See http://www.trolltech.com/qpl/ for QPL licensing information. 30** See http://www.trolltech.com/qpl/ for QPL licensing information.
31** See http://www.trolltech.com/gpl/ for GPL licensing information. 31** See http://www.trolltech.com/gpl/ for GPL licensing information.
32** 32**
33** Contact info@trolltech.com if any conditions of this licensing are 33** Contact info@trolltech.com if any conditions of this licensing are
34** not clear to you. 34** not clear to you.
35** 35**
36**********************************************************************/ 36**********************************************************************/
37#include "qsplitter.h" 37#include "qsplitter.h"
38 38
39#include "qpainter.h"
40#include "qdrawutil.h" 39#include "qdrawutil.h"
41#include "qbitmap.h"
42#include "qlayoutengine_p.h" 40#include "qlayoutengine_p.h"
43#include "qlist.h"
44#include "qarray.h"
45#include "qobjectlist.h" 41#include "qobjectlist.h"
46#include "qapplication.h" //sendPostedEvents 42#include "qapplication.h" //sendPostedEvents
47 43
48class QSplitterHandle : public QWidget 44class QSplitterHandle : public QWidget
49{ 45{
50public: 46public:
51 QSplitterHandle( Qt::Orientation o, 47 QSplitterHandle( Qt::Orientation o,
52 QSplitter *parent, const char* name=0 ); 48 QSplitter *parent, const char* name=0 );
53 void setOrientation( Qt::Orientation o ); 49 void setOrientation( Qt::Orientation o );
54 Qt::Orientation orientation() const { return orient; } 50 Qt::Orientation orientation() const { return orient; }
55 51
56 bool opaque() const { return s->opaqueResize(); } 52 bool opaque() const { return s->opaqueResize(); }
57 53
58 QSize sizeHint() const; 54 QSize sizeHint() const;
59 QSizePolicy sizePolicy() const; 55 QSizePolicy sizePolicy() const;
60 56
61 int id() const { return myId; } // data->list.at(id())->wid == this 57 int id() const { return myId; } // data->list.at(id())->wid == this
62 void setId( int i ) { myId = i; } 58 void setId( int i ) { myId = i; }
63 59
64protected: 60protected:
65 void paintEvent( QPaintEvent * ); 61 void paintEvent( QPaintEvent * );
66 void mouseMoveEvent( QMouseEvent * ); 62 void mouseMoveEvent( QMouseEvent * );
67 void mousePressEvent( QMouseEvent * ); 63 void mousePressEvent( QMouseEvent * );
68 void mouseReleaseEvent( QMouseEvent * ); 64 void mouseReleaseEvent( QMouseEvent * );
69 65
70private: 66private:
71 Qt::Orientation orient; 67 Qt::Orientation orient;
72 bool opaq; 68 bool opaq;
73 int myId; 69 int myId;
74 70
75 QSplitter *s; 71 QSplitter *s;
76}; 72};
77 73
78static int mouseOffset; 74static int mouseOffset;
79static int opaqueOldPos = -1; //### there's only one mouse, but this is a bit risky 75static int opaqueOldPos = -1; //### there's only one mouse, but this is a bit risky
80 76
81 77
82QSplitterHandle::QSplitterHandle( Qt::Orientation o, 78QSplitterHandle::QSplitterHandle( Qt::Orientation o,
83 QSplitter *parent, const char * name ) 79 QSplitter *parent, const char * name )
84 : QWidget( parent, name ) 80 : QWidget( parent, name )
85{ 81{
86 s = parent; 82 s = parent;
87 setOrientation(o); 83 setOrientation(o);
88} 84}
89 85
90QSizePolicy QSplitterHandle::sizePolicy() const 86QSizePolicy QSplitterHandle::sizePolicy() const
91{ 87{
92 //### removeme 3.0 88 //### removeme 3.0
93 return QWidget::sizePolicy(); 89 return QWidget::sizePolicy();
94} 90}
95 91
96QSize QSplitterHandle::sizeHint() const 92QSize QSplitterHandle::sizeHint() const
97{ 93{
98 int sw = style().splitterWidth(); 94 int sw = style().splitterWidth();
99 return QSize(sw,sw).expandedTo( QApplication::globalStrut() ); 95 return QSize(sw,sw).expandedTo( QApplication::globalStrut() );
100} 96}
101 97
102void QSplitterHandle::setOrientation( Qt::Orientation o ) 98void QSplitterHandle::setOrientation( Qt::Orientation o )
103{ 99{
104 orient = o; 100 orient = o;
105#ifndef QT_NO_CURSOR 101#ifndef QT_NO_CURSOR
106 if ( o == QSplitter::Horizontal ) 102 if ( o == QSplitter::Horizontal )
107 setCursor( splitHCursor ); 103 setCursor( splitHCursor );
108 else 104 else
109 setCursor( splitVCursor ); 105 setCursor( splitVCursor );
110#endif 106#endif
111} 107}
112 108
113 109
114void QSplitterHandle::mouseMoveEvent( QMouseEvent *e ) 110void QSplitterHandle::mouseMoveEvent( QMouseEvent *e )
115{ 111{
116 if ( !(e->state()&LeftButton) ) 112 if ( !(e->state()&LeftButton) )
117 return; 113 return;
118 QCOORD pos = s->pick(parentWidget()->mapFromGlobal(e->globalPos())) 114 QCOORD pos = s->pick(parentWidget()->mapFromGlobal(e->globalPos()))
119 - mouseOffset; 115 - mouseOffset;
120 if ( opaque() ) { 116 if ( opaque() ) {
121 s->moveSplitter( pos, id() ); 117 s->moveSplitter( pos, id() );
122 } else { 118 } else {
123 int min = pos; int max = pos; 119 int min = pos; int max = pos;
124 s->getRange( id(), &min, &max ); 120 s->getRange( id(), &min, &max );
125 s->setRubberband( QMAX( min, QMIN(max, pos ))); 121 s->setRubberband( QMAX( min, QMIN(max, pos )));
126 } 122 }
127} 123}
128 124
129void QSplitterHandle::mousePressEvent( QMouseEvent *e ) 125void QSplitterHandle::mousePressEvent( QMouseEvent *e )
130{ 126{
131 if ( e->button() == LeftButton ) 127 if ( e->button() == LeftButton )
132 mouseOffset = s->pick(e->pos()); 128 mouseOffset = s->pick(e->pos());
133} 129}
134 130
135void QSplitterHandle::mouseReleaseEvent( QMouseEvent *e ) 131void QSplitterHandle::mouseReleaseEvent( QMouseEvent *e )
136{ 132{
137 if ( !opaque() && e->button() == LeftButton ) { 133 if ( !opaque() && e->button() == LeftButton ) {
138 QCOORD pos = s->pick(parentWidget()->mapFromGlobal(e->globalPos())); 134 QCOORD pos = s->pick(parentWidget()->mapFromGlobal(e->globalPos()));
139 s->setRubberband( -1 ); 135 s->setRubberband( -1 );
140 s->moveSplitter( pos, id() ); 136 s->moveSplitter( pos, id() );
141 } 137 }
142} 138}
143 139
144void QSplitterHandle::paintEvent( QPaintEvent * ) 140void QSplitterHandle::paintEvent( QPaintEvent * )
145{ 141{
146 QPainter p( this ); 142 QPainter p( this );
147 s->drawSplitter( &p, 0, 0, width(), height() ); 143 s->drawSplitter( &p, 0, 0, width(), height() );
148} 144}
149 145
150 146
151class QSplitterLayoutStruct 147class QSplitterLayoutStruct
152{ 148{
153public: 149public:
154 QSplitter::ResizeMode mode; 150 QSplitter::ResizeMode mode;
155 QCOORD sizer; 151 QCOORD sizer;
156 bool isSplitter; 152 bool isSplitter;
157 QWidget *wid; 153 QWidget *wid;
158}; 154};
159 155
160class QSplitterData 156class QSplitterData
161{ 157{
162public: 158public:
163 QSplitterData() : opaque( FALSE ), firstShow( TRUE ) {} 159 QSplitterData() : opaque( FALSE ), firstShow( TRUE ) {}
164 160
165 QList<QSplitterLayoutStruct> list; 161 QList<QSplitterLayoutStruct> list;
166 bool opaque; 162 bool opaque;
167 bool firstShow; 163 bool firstShow;
168}; 164};
169 165
170 166
171// NOT REVISED 167// NOT REVISED
172/*! 168/*!
173 \class QSplitter qsplitter.h 169 \class QSplitter qsplitter.h
174 \brief The QSplitter class implements a splitter widget. 170 \brief The QSplitter class implements a splitter widget.
175 171
176 \ingroup organizers 172 \ingroup organizers
177 173
178 A splitter lets the user control the size of child widgets by 174 A splitter lets the user control the size of child widgets by
179 dragging the boundary between the children. Any number of widgets 175 dragging the boundary between the children. Any number of widgets
180 may be controlled. 176 may be controlled.
181 177
182 To show a QListBox, a QListView and a QMultiLineEdit side by side: 178 To show a QListBox, a QListView and a QMultiLineEdit side by side:
183 179
184 \code 180 \code
185 QSplitter *split = new QSplitter( parent ); 181 QSplitter *split = new QSplitter( parent );
186 QListBox *lb = new QListBox( split ); 182 QListBox *lb = new QListBox( split );
187 QListView *lv = new QListView( split ); 183 QListView *lv = new QListView( split );
188 QMultiLineEdit *ed = new QMultiLineEdit( split ); 184 QMultiLineEdit *ed = new QMultiLineEdit( split );
189 \endcode 185 \endcode
190 186
191 In QSplitter the boundary can be either horizontal or vertical. The 187 In QSplitter the boundary can be either horizontal or vertical. The
192 default is horizontal (the children are side by side) and you 188 default is horizontal (the children are side by side) and you
193 can use setOrientation( QSplitter::Vertical ) to set it to vertical. 189 can use setOrientation( QSplitter::Vertical ) to set it to vertical.
194 190
195 By default, all widgets can be as large or as small as the user 191 By default, all widgets can be as large or as small as the user
196 wishes, down to \link QWidget::minimumSizeHint() minimumSizeHint()\endlink. 192 wishes, down to \link QWidget::minimumSizeHint() minimumSizeHint()\endlink.
197 You can naturally use setMinimumSize() and/or 193 You can naturally use setMinimumSize() and/or
198 setMaximumSize() on the children. Use setResizeMode() to specify that 194 setMaximumSize() on the children. Use setResizeMode() to specify that
199 a widget should keep its size when the splitter is resized. 195 a widget should keep its size when the splitter is resized.
200 196
201 QSplitter normally resizes the children only at the end of a 197 QSplitter normally resizes the children only at the end of a
202 resize operation, but if you call setOpaqueResize( TRUE ), the 198 resize operation, but if you call setOpaqueResize( TRUE ), the
203 widgets are resized as often as possible. 199 widgets are resized as often as possible.
204 200
205 The initial distribution of size between the widgets is determined 201 The initial distribution of size between the widgets is determined
206 by the initial size of each widget. You can also use setSizes() to 202 by the initial size of each widget. You can also use setSizes() to
207 set the sizes of all the widgets. The function sizes() returns the 203 set the sizes of all the widgets. The function sizes() returns the
208 sizes set by the user. 204 sizes set by the user.
209 205
210 If you hide() a child, its space will be distributed among the other 206 If you hide() a child, its space will be distributed among the other
211 children. When you show() it again, it will be reinstated. 207 children. When you show() it again, it will be reinstated.
212 208
213 <img src=qsplitter-m.png> <img src=qsplitter-w.png> 209 <img src=qsplitter-m.png> <img src=qsplitter-w.png>
214 210
215 \sa QTabBar 211 \sa QTabBar
216*/ 212*/
217 213
218 214
219 215
220static QSize minSize( const QWidget *w ) 216static QSize minSize( const QWidget *w )
221{ 217{
222 QSize min = w->minimumSize(); 218 QSize min = w->minimumSize();
223 QSize s; 219 QSize s;
224 if ( min.height() <= 0 || min.width() <= 0 ) 220 if ( min.height() <= 0 || min.width() <= 0 )
225 s = w->minimumSizeHint(); 221 s = w->minimumSizeHint();
226 if ( min.height() > 0 ) 222 if ( min.height() > 0 )
227 s.setHeight( min.height() ); 223 s.setHeight( min.height() );
228 if ( min.width() > 0 ) 224 if ( min.width() > 0 )
229 s.setWidth( min.width() ); 225 s.setWidth( min.width() );
230 return s.expandedTo(QSize(0,0)); 226 return s.expandedTo(QSize(0,0));
231} 227}
232 228
233/*! 229/*!
234 Constructs a horizontal splitter. 230 Constructs a horizontal splitter.
235*/ 231*/
236 232