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00012 #include <qlabel.h>
00013 #include <qfiledialog.h>
00014 #include <qcheckbox.h>
00015 #include <qlayout.h>
00016 #include <qpixmap.h>
00017 #include <qimage.h>
00018 #include <qlayout.h>
00019 #include <qfileinfo.h>
00020 #include <qmutex.h>
00021 #include <qthread.h>
00022 #include <qevent.h>
00023 #include <qapplication.h>
00024
00025
00026 #include "addPhotosDialog.h"
00027 #include "../../config.h"
00028 #include "../../backend/tools/imageTools.h"
00029
00030 #define MIN_WIDTH 240
00031 #define MIN_HEIGHT 180
00032
00033 #define UPDATE_PREVIEW_DETAILS QEvent::User
00034
00035
00036
00037
00038
00039
00040 class UpdatePreviewEvent : public QCustomEvent
00041 {
00042 public:
00043 UpdatePreviewEvent( QImage image, QString details ) : QCustomEvent( UPDATE_PREVIEW_DETAILS )
00044 {
00045 this->image = image;
00046 this->details = details;
00047 }
00048
00049
00050 QImage getImage() const { return image; }
00051
00052
00053 QString getDetails() const { return details; }
00054
00055 private:
00056 QImage image;
00057 QString details;
00058 };
00059
00060 GeneratePreviewThread::GeneratePreviewThread( FilePreview* previewWidget )
00061 {
00062
00063
00064
00065 this->previewWidget = previewWidget;
00066
00067
00068 updating = false;
00069 queue = QString::null;
00070 }
00071
00072 void GeneratePreviewThread::start( QString filename )
00073 {
00074
00075 lockingMutex.lock();
00076
00077
00078 if(updating)
00079 {
00080 queue = filename;
00081 lockingMutex.unlock();
00082 return;
00083 }
00084
00085 else
00086 {
00087 updating = true;
00088 this->filename = filename;
00089 lockingMutex.unlock();
00090 QThread::start();
00091 }
00092 }
00093
00094 void GeneratePreviewThread::run()
00095 {
00096
00097
00098
00099 while(true)
00100 {
00101
00102
00103 QString extension = QFileInfo(filename).extension(false).upper();
00104 bool validExtension = ( (extension.compare("GIF") == 0) ||
00105 (extension.compare("JPG") == 0) ||
00106 (extension.compare("JPEG") == 0) ||
00107 (extension.compare("PNG") == 0) ||
00108 (extension.compare("XPM") == 0) );
00109
00110
00111 QImage scaledImage;
00112 if( validExtension )
00113 {
00114 scaleImage(filename, scaledImage, MIN_WIDTH, MIN_HEIGHT );
00115 }
00116
00117
00118 QString imageRes = "";
00119 if(validExtension)
00120 {
00121 QSize res;
00122 getImageSize( filename, res );
00123 imageRes = QString("%1 x %2").arg(res.width()).arg(res.height());
00124 }
00125
00126
00127 QString fileSize = "?";
00128 QFileInfo info;
00129 info.setFile( filename );
00130 int sizeOnDisk = info.size();
00131
00132 if(sizeOnDisk < 1024)
00133 fileSize = QString("%1 Byte%2").arg(sizeOnDisk).arg( sizeOnDisk == 0 || sizeOnDisk > 1 ? "s" : "");
00134 else if( sizeOnDisk/1024 < 1024)
00135
00136 fileSize = QString("%1 Kb").arg( ((float)((100*sizeOnDisk)/1024))/100 );
00137 else if( sizeOnDisk/(1024*1024) < 1024)
00138 fileSize = QString("%1 Mb").arg( ((float)((100*sizeOnDisk)/(1024*1024)))/100 );
00139 else
00140 fileSize = QString("%1 Gigs").arg( ((float)((100*sizeOnDisk)/(1024*1024*1024)))/100 );
00141
00142
00143 QString fileDetails = QString("%1 %2, %3")
00144 .arg(imageRes)
00145 .arg(extension)
00146 .arg(fileSize);
00147
00148
00149 UpdatePreviewEvent* upe = new UpdatePreviewEvent( scaledImage, fileDetails );
00150 QApplication::postEvent( previewWidget, upe );
00151
00152
00153 lockingMutex.lock();
00154
00155
00156 if( queue.isNull() )
00157 {
00158 updating = false;
00159 lockingMutex.unlock();
00160 return;
00161 }
00162
00163 else
00164 {
00165 filename = queue;
00166 queue = QString::null;
00167 lockingMutex.unlock();
00168 }
00169
00170 }
00171 }
00172
00173 FilePreview::FilePreview(QWidget* parent) : QWidget(parent)
00174 {
00175
00176 filePreview = new QLabel( this );
00177 fileDetails = new QLabel( this );
00178
00179 QGridLayout* grid = new QGridLayout( this, 4, 3 );
00180 grid->setRowStretch( 0, 1 );
00181 grid->addWidget( filePreview, 1, 1, Qt::AlignHCenter );
00182 grid->addWidget( fileDetails, 2, 1, Qt::AlignHCenter );
00183 grid->setRowStretch( 3, 1 );
00184
00185 grid->setColStretch( 0, 1 );
00186 grid->setColStretch( 2, 1 );
00187
00188
00189
00190 generatorThread = new GeneratePreviewThread(this);
00191 }
00192
00193 FilePreview::~FilePreview()
00194 {
00195
00196 generatorThread->wait();
00197 delete generatorThread;
00198 generatorThread = NULL;
00199 }
00200
00201 QSize FilePreview::minimumSizeHint () const
00202 {
00203 QFontMetrics fm( font() );
00204 return QSize(MIN_WIDTH, MIN_HEIGHT + 2*fm.height() );
00205 }
00206
00207 void FilePreview::customEvent( QCustomEvent * e )
00208 {
00209
00210
00211 if ( e->type() == UPDATE_PREVIEW_DETAILS )
00212 {
00213 UpdatePreviewEvent* upe = (UpdatePreviewEvent*)e;
00214
00215 if( !upe->getImage().isNull() )
00216 {
00217 QPixmap scaledPixmap;
00218 scaledPixmap.convertFromImage( upe->getImage() );
00219 filePreview->setPixmap( scaledPixmap );
00220 }
00221
00222 fileDetails->setText( upe->getDetails() );
00223 }
00224 }
00225
00226 void FilePreview::updatePreview( const QString& filename )
00227 {
00228
00229
00230
00231
00232 if( generatorThread != NULL)
00233 {
00234 generatorThread->start( filename );
00235 }
00236 }
00237
00238 AddPhotosDialog::AddPhotosDialog(QString path, QWidget *parent, const char* name ) :
00239 QFileDialog(path,
00240 tr("Images") + " (*.gif *.jpg *.jpeg *.png *.xpm *.GIF *.JPG *.JPEG *.PNG *.XPM)",
00241 parent,name)
00242 {
00243
00244 setMode( QFileDialog::ExistingFiles );
00245 setViewMode( QFileDialog::List );
00246
00247 filePreview = new FilePreview();
00248 setContentsPreviewEnabled( true );
00249 setContentsPreview( filePreview, filePreview );
00250 setPreviewMode( QFileDialog::Contents );
00251
00252
00253
00254 setDescriptions = new QCheckBox( tr("Use filenames for descriptions."), this );
00255 setDescriptions->setChecked( false );
00256 addWidgets( NULL, setDescriptions, NULL );
00257
00258
00259 setCaption( tr("Add Photos") );
00260
00261 connect( this, SIGNAL( fileHighlighted(const QString&)),
00262 this, SLOT( updatePreview(const QString&)) );
00263 }
00264
00265 QStringList AddPhotosDialog::getFilenames(bool& setDescriptionsBool)
00266 {
00267 if( exec() == QDialog::Accepted )
00268 {
00269 setDescriptionsBool = setDescriptions->isChecked();
00270 return selectedFiles();
00271 }
00272 else { return QStringList(); }
00273 }
00274
00275 void AddPhotosDialog::updatePreview(const QString& filename)
00276 {
00277 filePreview->updatePreview( filename );
00278 }
00279