void MainGui::openDocumentation() {
QDialog *help=new QDialog();
help->setAttribute(Qt::WA_DeleteOnClose);
Ui::HelpDialog ui;
ui.setupUi(help);
QString docDir = QCoreApplication::applicationDirPath();
docDir.append("/../Resources/html");
ui.tb->setSearchPaths(QStringList("/usr/share/qtpfsgui/html") << "/usr/local/share/qtpfsgui/html" << "./html" << docDir << "/Applications/qtpfsgui.app/Contents/Resources/html");
ui.tb->setSource(QUrl("index.html"));
help->show();
}
/*!
\fn ViewerWidget::keyPressEvent(QKeyEvent *k)
Handle all keyboard events. All events which are not handled trigger
a help window.
*/
void ViewerWidget::keyPressEvent(QKeyEvent* k)
{
QPoint middlepoint;
switch (k->key())
{
// next image
case Qt::Key_N:
case Qt::Key_Right:
case Qt::Key_Down:
case Qt::Key_PageDown:
case Qt::Key_Space:
nextImage();
break;
// previous image
case Qt::Key_P:
case Qt::Key_Left:
case Qt::Key_Up:
case Qt::Key_PageUp:
prevImage();
break;
// rotate image
case Qt::Key_R:
texture->rotate();
downloadTex(texture);
updateGL();
break;
// terminate image viewer
case Qt::Key_Escape:
// clean up: where does this have to be done?
close();
break;
// full screen
case Qt::Key_F:
// according to QT documentation, showFullScreen() has some
// serious issues on window managers that do not follow modern
// post-ICCCM specifications
if (isFullScreen())
{
texture->reset();
showNormal();
}
else
{
texture->reset();
showFullScreen();
}
break;
// reset size and redraw
case Qt::Key_Z:
texture->reset();
updateGL();
break;
// toggle permanent between "show next image" and "zoom" on mousewheel change
case Qt::Key_C:
if (wheelAction==zoomImage)
wheelAction=changeImage;
else
wheelAction=zoomImage;
break;
// zoom in
case Qt::Key_Plus:
middlepoint = QPoint(width()/2,height()/2);
if (texture->setSize( zoomsize ))
downloadTex(texture); //load full resolution image
zoom(-1, middlepoint, zoomfactor_keyboard);
break;
// zoom out
case Qt::Key_Minus:
middlepoint = QPoint(width()/2,height()/2);
if (texture->setSize( zoomsize ))
downloadTex(texture); //load full resolution image
zoom(1, middlepoint, zoomfactor_keyboard);
break;
// zoom to original size
case Qt::Key_O:
texture->zoomToOriginal();
updateGL();
break;
// toggle temorarily between "show next image" and "zoom" on mousewheel change
case Qt::Key_Control:
if (wheelAction == zoomImage)
{
//scrollwheel changes to the next image
wheelAction = changeImage;
}
else
{
//scrollwheel does zoom
wheelAction = zoomImage;
setCursor (zoomCursor);
timerMouseMove.stop();
}
break;
//do noting, don't trigger the help dialog
case Qt::Key_Shift:
break;
//key is not bound to any action, therefore show help dialog to enlighten the user
default:
QPointer<QDialog> d = new QDialog(this);
Ui::HelpDialog hd;
hd.setupUi(d);
d->exec();
delete d;
break;
}
}