void MainGraphicsView::keyPressEvent(QKeyEvent *event)
{
if(event->modifiers() & Qt::ControlModifier)
{
switch (event->key())
{
case Qt::Key_Plus:
scaleView(qreal(1.2));
break;
case Qt::Key_Minus:
case Qt::Key_Equal:
scaleView(1 / qreal(1.2));
break;
default:
QGraphicsView::keyPressEvent(event);
}
}
else
{
switch (event->key())
{
case Qt::Key_Left:
emit prevImage();
break;
case Qt::Key_Right:
emit nextImage();
break;
default:
QGraphicsView::keyPressEvent(event);
}
}
}
ImgViewer::ImgViewer(QWidget *parent) :
QWidget(parent),
ui(new Ui::ImgViewer)
{
ui->setupUi(this);
connect(ui->prevBut, SIGNAL(released()), this, SLOT(prevImage()));
connect(ui->nextBut, SIGNAL(released()), this, SLOT(nextImage()));
connect(ui->slider, SIGNAL(valueChanged(int)), this, SLOT(slid(int)));
}
static void
raster_special(int key, int x, int y)
{
(void) x;
(void) y;
switch (key) {
case GLUT_KEY_PAGE_UP: /* previous logical image */
if (TIFFCurrentDirectory(tif) > 0) {
if (TIFFSetDirectory(tif,
TIFFCurrentDirectory(tif)-1)) {
initImage();
setWindowSize();
}
} else {
TIFFRGBAImageEnd(&img);
prevImage();
initImage();
setWindowSize();
}
break;
case GLUT_KEY_PAGE_DOWN: /* next logical image */
if (!TIFFLastDirectory(tif)) {
if (TIFFReadDirectory(tif)) {
initImage();
setWindowSize();
}
} else {
TIFFRGBAImageEnd(&img);
nextImage();
initImage();
setWindowSize();
}
break;
case GLUT_KEY_HOME: /* 1st image in current file */
if (TIFFSetDirectory(tif, 0)) {
TIFFRGBAImageEnd(&img);
initImage();
setWindowSize();
}
break;
case GLUT_KEY_END: /* last image in current file */
TIFFRGBAImageEnd(&img);
while (!TIFFLastDirectory(tif))
TIFFReadDirectory(tif);
initImage();
setWindowSize();
break;
}
glutPostRedisplay();
}
/*!
\fn ViewerWidget::wheelEvent(QWheelEvent* e)
*/
void ViewerWidget::wheelEvent(QWheelEvent* e)
{
switch(wheelAction)
{
// mousewheel triggers zoom
case zoomImage:
setCursor(zoomCursor);
zoom(e->delta(), e->pos(), zoomfactor_scrollwheel);
break;
// mousewheel triggers image change
case changeImage:
if (e->delta() < 0)
nextImage();
else
prevImage();
break;
}
}
void MainGraphicsView::wheelEvent(QWheelEvent *event)
{
qreal scale = pow((double)2, event->delta() / 240.0);
if(event->modifiers() & Qt::ShiftModifier)
{
// m_wheelCounter += scale;
// qDebug() << "Scroll Delta:"<<scale<<", m_wheelCounter:"<<m_wheelCounter;
// if(m_wheelCounter > 3)
// m_wheelCounter = 0;
if(scale > 0)
emit nextImage();
else
emit prevImage();
}
else
{
scaleView(scale);
}
}
/*!
\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;
}
}
void PhotoDetails::slotPrevProp() {
modifyImage();
emit prevImage();
}
