AlbumShaper
1.0a3
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#include <addPhotosDialog.h>
Public Member Functions | |
FilePreview (QWidget *parent=0) | |
~FilePreview () | |
QSize | minimumSizeHint () const |
void | previewUrl (const QUrl &) |
declared to make base class happy. we'll use an updatePreview function instead | |
void | updatePreview (const QString &path) |
call this function to update the file preview | |
Protected Member Functions | |
void | customEvent (QCustomEvent *e) |
handle update events that come from the GeneratePreviewThread | |
Private Attributes | |
QLabel * | filePreview |
preview of last selected file | |
QLabel * | fileDetails |
details about last selected file | |
GeneratePreviewThread * | generatorThread |
a worker thread that actually generates the file preview image and details information that is displayed. |
Definition at line 55 of file addPhotosDialog.h.
FilePreview::FilePreview | ( | QWidget * | parent = 0 | ) |
Definition at line 173 of file addPhotosDialog.cpp.
References fileDetails, filePreview, and generatorThread.
: QWidget(parent) { //create widgets for display preview image and details filePreview = new QLabel( this ); fileDetails = new QLabel( this ); QGridLayout* grid = new QGridLayout( this, 4, 3 ); grid->setRowStretch( 0, 1 ); grid->addWidget( filePreview, 1, 1, Qt::AlignHCenter ); grid->addWidget( fileDetails, 2, 1, Qt::AlignHCenter ); grid->setRowStretch( 3, 1 ); grid->setColStretch( 0, 1 ); grid->setColStretch( 2, 1 ); //create a generator thread that will be used for actually generating //preview images and constructing details strings generatorThread = new GeneratePreviewThread(this); }
FilePreview::~FilePreview | ( | ) |
Definition at line 193 of file addPhotosDialog.cpp.
References generatorThread.
{ //make sure generator thread is done! generatorThread->wait(); delete generatorThread; generatorThread = NULL; }
void FilePreview::customEvent | ( | QCustomEvent * | e | ) | [protected] |
handle update events that come from the GeneratePreviewThread
Definition at line 207 of file addPhotosDialog.cpp.
References fileDetails, filePreview, UpdatePreviewEvent::getDetails(), UpdatePreviewEvent::getImage(), and UPDATE_PREVIEW_DETAILS.
{ //handle UpdatePrevewEvents that are sent from the worker thread //by update the preview image and details that are shown if ( e->type() == UPDATE_PREVIEW_DETAILS ) { UpdatePreviewEvent* upe = (UpdatePreviewEvent*)e; if( !upe->getImage().isNull() ) { QPixmap scaledPixmap; scaledPixmap.convertFromImage( upe->getImage() ); filePreview->setPixmap( scaledPixmap ); } fileDetails->setText( upe->getDetails() ); } }
QSize FilePreview::minimumSizeHint | ( | ) | const |
Definition at line 201 of file addPhotosDialog.cpp.
References MIN_HEIGHT, and MIN_WIDTH.
{ QFontMetrics fm( font() ); return QSize(MIN_WIDTH, MIN_HEIGHT + 2*fm.height() ); }
void FilePreview::previewUrl | ( | const QUrl & | ) | [inline] |
declared to make base class happy. we'll use an updatePreview function instead
Definition at line 63 of file addPhotosDialog.h.
{}
void FilePreview::updatePreview | ( | const QString & | path | ) |
call this function to update the file preview
Definition at line 226 of file addPhotosDialog.cpp.
References generatorThread, and GeneratePreviewThread::start().
Referenced by AddPhotosDialog::updatePreview().
{ //handle requests to update the preview information by asking //the generator thread to handle them. by using //an auxiallary thread we can process requests very quickly while //any current work being done to generate an image preview continues if( generatorThread != NULL) { generatorThread->start( filename ); } }
QLabel* FilePreview::fileDetails [private] |
details about last selected file
Definition at line 77 of file addPhotosDialog.h.
Referenced by customEvent(), and FilePreview().
QLabel* FilePreview::filePreview [private] |
preview of last selected file
Definition at line 74 of file addPhotosDialog.h.
Referenced by customEvent(), and FilePreview().
a worker thread that actually generates the file preview image and details information that is displayed.
Definition at line 82 of file addPhotosDialog.h.
Referenced by FilePreview(), updatePreview(), and ~FilePreview().