blob: cb3552144bb2719b8c68ce93d5da2a55bc994740 (
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
|
/****************************************************************************
** $Id$
**
** Implementing your own tqlayout: flow example
**
** Copyright (C) 1996 by Trolltech AS. All rights reserved.
**
** This file is part of an example program for TQt. This example
** program may be used, distributed and modified without limitation.
**
*****************************************************************************/
#include "flow.h"
class SimpleFlowIterator :public TQGLayoutIterator
{
public:
SimpleFlowIterator( TQPtrList<TQLayoutItem> *l ) :idx(0), list(l) {}
uint count() const;
TQLayoutItem *current();
TQLayoutItem *next();
TQLayoutItem *takeCurrent();
private:
int idx;
TQPtrList<TQLayoutItem> *list;
};
uint SimpleFlowIterator::count() const
{
return list->count();
}
TQLayoutItem *SimpleFlowIterator::current()
{
return idx < int(count()) ? list->at(idx) : 0;
}
TQLayoutItem *SimpleFlowIterator::next()
{
idx++; return current();
}
TQLayoutItem *SimpleFlowIterator::takeCurrent()
{
return idx < int(count()) ? list->take( idx ) : 0;
}
SimpleFlow::~SimpleFlow()
{
deleteAllItems();
}
int SimpleFlow::heightForWidth( int w ) const
{
if ( cached_width != w ) {
//Not all C++ compilers support "mutable" yet:
SimpleFlow * mthis = (SimpleFlow*)this;
int h = mthis->doLayout( TQRect(0,0,w,0), TRUE );
mthis->cached_hfw = h;
mthis->cached_width = w;
return h;
}
return cached_hfw;
}
void SimpleFlow::addItem( TQLayoutItem *item)
{
list.append( TQT_TQLAYOUTITEM(item) );
}
bool SimpleFlow::hasHeightForWidth() const
{
return TRUE;
}
TQSize SimpleFlow::sizeHint() const
{
return minimumSize();
}
TQSizePolicy::ExpandData SimpleFlow::expanding() const
{
#ifdef USE_QT4
return (Qt::Orientation)TQSizePolicy::NoDirection;
#else // USE_QT4
return TQSizePolicy::NoDirection;
#endif // USE_QT4
}
TQLayoutIterator SimpleFlow::iterator()
{
// [FIXME]
#ifdef USE_QT4
#warning [FIXME] ContainerAreaLayout iterators may not function correctly under Qt4
return TQLayoutIterator(this); // [FIXME]
#else // USE_QT4
return TQLayoutIterator( new SimpleFlowIterator( &list ) );
#endif // USE_QT4
}
void SimpleFlow::setGeometry( const TQRect &r )
{
TQLayout::setGeometry( r );
doLayout( r );
}
int SimpleFlow::doLayout( const TQRect &r, bool testonly )
{
int x = r.x();
int y = r.y();
int h = 0; //height of this line so far.
TQPtrListIterator<TQLayoutItem> it(list);
TQLayoutItem *o;
while ( (o=it.current()) != 0 ) {
++it;
int nextX = x + o->sizeHint().width() + spacing();
if ( nextX - spacing() > r.right() && h > 0 ) {
x = r.x();
y = y + h + spacing();
nextX = x + o->sizeHint().width() + spacing();
h = 0;
}
if ( !testonly )
o->setGeometry( TQRect( TQPoint( x, y ), o->sizeHint() ) );
x = nextX;
h = TQMAX( h, o->sizeHint().height() );
}
return y + h - r.y();
}
TQSize SimpleFlow::minimumSize() const
{
TQSize s(0,0);
TQPtrListIterator<TQLayoutItem> it(list);
TQLayoutItem *o;
while ( (o=it.current()) != 0 ) {
++it;
s = s.expandedTo( o->minimumSize() );
}
return s;
}
#ifdef USE_QT4
/*!
\reimp
*/
int SimpleFlow::count() const {
return list.count();
}
/*!
\reimp
*/
TQLayoutItem* SimpleFlow::itemAt(int index) const {
return index >= 0 && index < list.count() ? (const_cast<TQPtrList<TQLayoutItem>&>(list).at(index)) : 0;
}
/*!
\reimp
*/
TQLayoutItem* SimpleFlow::takeAt(int index) {
if (index < 0 || index >= list.count())
return 0;
TQLayoutItem *item = list.at(index);
list.remove(list.at(index));
delete item;
invalidate();
return item;
}
#endif // USE_QT4
|
