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
|
/*
* This file is part of the KDE project
* Copyright (C) 2001 Martin R. Jones <[email protected]>
* 2001 Carsten Pfeiffer <[email protected]>
*
* You can Freely distribute this program under the GNU Library General Public
* License. See the file "COPYING" for the exact licensing terms.
*/
#include <layout.h>
#include <tqlabel.h>
#include <tqcombobox.h>
#include <tqcheckbox.h>
#include <tqwhatsthis.h>
#include <tqtimer.h>
#include <kapplication.h>
#include <kconfig.h>
#include <kglobal.h>
#include <kiconloader.h>
#include <kpushbutton.h>
#include <kstandarddirs.h>
#include <kdebug.h>
#include <klocale.h>
#include <kfiledialog.h>
#include <kfileitem.h>
#include <kio/previewjob.h>
#include "kimagefilepreview.h"
#include "config-kfile.h"
/**** KImageFilePreview ****/
KImageFilePreview::KImageFilePreview( TQWidget *parent )
: KPreviewWidgetBase( parent ),
m_job( 0L )
{
KConfig *config = KGlobal::config();
KConfigGroupSaver cs( config, ConfigGroup );
autoMode = config->readBoolEntry( "Automatic Preview", true );
TQVBoxLayout *vb = new TQVBoxLayout( this, 0, KDialog::spacingHint() );
imageLabel = new TQLabel( this );
imageLabel->setFrameStyle( TQFrame::NoFrame );
imageLabel->setAlignment( Qt::AlignHCenter | Qt::AlignVCenter );
imageLabel->setSizePolicy( TQSizePolicy( TQSizePolicy::Expanding, TQSizePolicy::Expanding) );
vb->addWidget( imageLabel );
TQHBoxLayout *hb = new TQHBoxLayout( 0 );
vb->addLayout( hb );
autoPreview = new TQCheckBox( i18n("&Automatic preview"), this );
autoPreview->setChecked( autoMode );
hb->addWidget( autoPreview );
connect( autoPreview, TQT_SIGNAL(toggled(bool)), TQT_SLOT(toggleAuto(bool)) );
previewButton = new KPushButton( SmallIconSet("thumbnail"), i18n("&Preview"), this );
hb->addWidget( previewButton );
connect( previewButton, TQT_SIGNAL(clicked()), TQT_SLOT(showPreview()) );
timer = new TQTimer( this );
connect( timer, TQT_SIGNAL(timeout()), TQT_SLOT(showPreview()) );
setSupportedMimeTypes( KIO::PreviewJob::supportedMimeTypes() );
}
KImageFilePreview::~KImageFilePreview()
{
if ( m_job )
m_job->kill();
KConfig *config = KGlobal::config();
KConfigGroupSaver cs( config, ConfigGroup );
config->writeEntry( "Automatic Preview", autoPreview->isChecked() );
}
void KImageFilePreview::showPreview()
{
// Pass a copy since clearPreview() will clear currentURL
KURL url = currentURL;
showPreview( url, true );
}
// called via KPreviewWidgetBase interface
void KImageFilePreview::showPreview( const KURL& url )
{
showPreview( url, false );
}
void KImageFilePreview::showPreview( const KURL &url, bool force )
{
if ( !url.isValid() ) {
clearPreview();
return;
}
if ( url != currentURL || force )
{
clearPreview();
currentURL = url;
if ( autoMode || force )
{
int w = imageLabel->contentsRect().width() - 4;
int h = imageLabel->contentsRect().height() - 4;
m_job = createJob( url, w, h );
if ( force ) // explicitly requested previews shall always be generated!
m_job->setIgnoreMaximumSize( true );
connect( m_job, TQT_SIGNAL( result( KIO::Job * )),
this, TQT_SLOT( slotResult( KIO::Job * )));
connect( m_job, TQT_SIGNAL( gotPreview( const KFileItem*,
const TQPixmap& )),
TQT_SLOT( gotPreview( const KFileItem*, const TQPixmap& ) ));
connect( m_job, TQT_SIGNAL( failed( const KFileItem* )),
this, TQT_SLOT( slotFailed( const KFileItem* ) ));
}
}
}
void KImageFilePreview::toggleAuto( bool a )
{
autoMode = a;
if ( autoMode )
{
// Pass a copy since clearPreview() will clear currentURL
KURL url = currentURL;
showPreview( url, true );
}
}
void KImageFilePreview::resizeEvent( TQResizeEvent * )
{
timer->start( 100, true ); // forces a new preview
}
TQSize KImageFilePreview::sizeHint() const
{
return TQSize( 20, 200 ); // otherwise it ends up huge???
}
KIO::PreviewJob * KImageFilePreview::createJob( const KURL& url, int w, int h )
{
KURL::List urls;
urls.append( url );
return KIO::filePreview( urls, w, h, 0, 0, true, false );
}
void KImageFilePreview::gotPreview( const KFileItem* item, const TQPixmap& pm )
{
if ( item->url() == currentURL ) // should always be the case
imageLabel->setPixmap( pm );
}
void KImageFilePreview::slotFailed( const KFileItem* item )
{
if ( item->isDir() )
imageLabel->clear();
else if ( item->url() == currentURL ) // should always be the case
imageLabel->setPixmap( SmallIcon( "file_broken", KIcon::SizeLarge,
KIcon::DisabledState ));
}
void KImageFilePreview::slotResult( KIO::Job *job )
{
if ( job == m_job )
m_job = 0L;
}
void KImageFilePreview::clearPreview()
{
if ( m_job ) {
m_job->kill();
m_job = 0L;
}
imageLabel->clear();
currentURL = KURL();
}
void KImageFilePreview::virtual_hook( int id, void* data )
{ KPreviewWidgetBase::virtual_hook( id, data ); }
#include "kimagefilepreview.moc"
|
