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
|
#include "fsimagemodel.h"
#include <QFileInfo>
#include <QImage>
#include <QDebug>
#include <QThread>
struct FsImageModelImage
{
QFileInfo info;
QImage image;
};
FsImageModel::FsImageModel(QString path,QObject * parent ):QAbstractItemModel(parent)
{
dir = QDir::current();
if(!path.isEmpty())
dir = QDir(path);
connect(&watcher,SIGNAL(directoryChanged ( const QString & )),this,SLOT(directoryChanged ( const QString & )));
connect(&watcher,SIGNAL(fileChanged ( const QString & )),this,SLOT(fileChanged ( const QString & )));
watcher.addPath(dir.absolutePath());
dir.setFilter(QDir::Files | QDir::Hidden | QDir::NoSymLinks);
QFileInfoList list = dir.entryInfoList();
for (int i = 0; i < list.size(); ++i)
{
FsImageModelImage * img= new FsImageModelImage;
img->info=list.at(i);
img->image.load(dir.absoluteFilePath(img->info.fileName()));
files.append(img);
watcher.addPath(dir.absoluteFilePath(img->info.fileName()));
}
}
FsImageModel::~FsImageModel()
{
qDeleteAll(files);
}
QModelIndex FsImageModel::index(int row, int column, const QModelIndex &parent) const
{
return createIndex ( row, column, files.at(row) );
}
QModelIndex FsImageModel::parent(const QModelIndex &index) const
{
return QModelIndex();
}
int FsImageModel::rowCount(const QModelIndex & parent ) const
{
if(parent.isValid())
return 0;
return files.count();
}
int FsImageModel::columnCount(const QModelIndex & parent ) const
{
return 1;
}
QVariant FsImageModel::data(const QModelIndex & index, int role ) const
{
FsImageModelImage* img=static_cast<FsImageModelImage*>(index.internalPointer());
if(role==Qt::DisplayRole)
return img->info.fileName();
if(role==Qt::DecorationRole)
return img->image;
return QVariant();
}
class Thread : public QThread
{
friend class FsImageModel;
};
void FsImageModel::directoryChanged ( const QString & path )
{
Q_ASSERT(path==dir.absolutePath());
QStringList org=watcher.files ();
QFileInfoList list = dir.entryInfoList();
for (int i = 0; i < list.size(); ++i)
{
QString path= dir.absoluteFilePath(list.at(i).fileName());
if(org.contains(path))
{
org.removeAll(path);
}
else
{
beginInsertRows (QModelIndex(),files.count(),files.count());
FsImageModelImage * img= new FsImageModelImage;
img->info=list.at(i);
int retry=100;
while(!img->image.load(path))
{
Thread::usleep(1000);
if(--retry<0)
{
break;
}
}; ///hax
files.append(img);
watcher.addPath(path);
endInsertRows ();
}
}
foreach(const QString &a, org)
fileChanged(a);
}
void FsImageModel::fileChanged ( const QString & path )
{
int i=0;
foreach(FsImageModelImage* img,files)
{
if(dir.absoluteFilePath(img->info.fileName())==path)
{
if(img->info.exists())
{
emit dataChanged ( index(i,0), index(i,0));
}
else
{
beginRemoveRows (QModelIndex(),i,i);
watcher.removePath(path);
delete files.at(i);
files.removeAt(i);
endRemoveRows ();
break;
}
break;
}
++i;
}
}
|
