///// keyPressEvent ///////////////////////////////////////////////////////////
void GLView::keyPressEvent(QKeyEvent* e)
/// Overridden from QGlWidget::mousepressEvent. Handles key presses.
/// \arg <left> : rotate left
/// \arg <right> : rotate right
/// \arg <up> : rotate up
/// \arg <down> : rotate down
/// \arg <shift>+<left> : rotate counterclockwise
/// \arg <shift>+<right>: rotate clockwise
/// \arg <shift>+<up> : zoom in
/// \arg <shift>+<down> : zoom out
/// \arg <ctrl>+<left> : translate left
/// \arg <ctrl>+<right> : translate right
/// \arg <ctrl>+<up> : translate up
/// \arg <ctrl>+<down> : translate down
/// \arg <ctrl>+<shift>+<left>: change internal coordinate of selection (smaller). Implementation in GLMoleculeView.
/// \arg <ctrl>+<shift>+<right>: change internal coordinate of selection (larger). Implementation in GLMoleculeView.
{
switch(e->key())
{
case Qt::Key_Left : if(e->modifiers() & Qt::ShiftModifier)
zRot = 5.0f; // rotate counterclockwise
else if(e->modifiers() & Qt::ControlModifier)
translateXY(-5, 0);
else
yRot = -5.0f; // rotate left
break;
case Qt::Key_Up : if(e->modifiers() & Qt::ShiftModifier)
translateZ(-5);
else if(e->modifiers() & Qt::ControlModifier)
translateXY(0, -5);
else
xRot = -5.0f; // rotate up
break;
case Qt::Key_Right : if(e->modifiers() & Qt::ShiftModifier)
zRot = -5.0f; // rotate clockwise
else if(e->modifiers() & Qt::ControlModifier)
translateXY(5, 0);
else
yRot = 5.0f; // rotate right
break;
case Qt::Key_Down : if(e->modifiers() & Qt::ShiftModifier)
translateZ(5);
else if(e->modifiers() & Qt::ControlModifier)
translateXY(0, 5);
else
xRot = 5.0f; // rotate down
break;
default: e->ignore();
return;
}
setModified();
updateGL();
}
void GLWidget::mouseMoveEvent(QMouseEvent *event)
{
if (event->buttons() == Qt::LeftButton)
{
rotateY(2.5*(event->x() - clickPointL.x()));
clickPointL = event->pos();
}
if (event->buttons() == Qt::RightButton)
{
translateXY(
0.01 *(event->x() - clickPointR.x()),
-0.01*(event->y() - clickPointR.y()));
clickPointR = event->pos();
}
}
///// mouseMoveEvent //////////////////////////////////////////////////////////
void GLView::mouseMoveEvent(QMouseEvent* e)
/// Overridden from QGlWidget::mouseMoveEvent. Handles left mouse button drags.
{
if(e->modifiers() & Qt::LeftButton) // only track mousemoves for the left button
{
QPoint newPosition = e->pos(); // the mouse moved from mousePosition to newPosition
if(e->modifiers() & Qt::ShiftModifier) // shift has precedence over control
{
///// LEFTBUTTON + SHIFT
///// up/down movement: zooming (z-translation)
///// left/right movement: z-rotation
///// decoupled
if(abs(newPosition.y() - mousePosition.y()) > abs(newPosition.x() - mousePosition.x()))
translateZ(newPosition.y() - mousePosition.y());
else
zRot = -180.0f * static_cast<float>(newPosition.x() - mousePosition.x()) / static_cast<float>(width()); // z-rotation of entire system
}
else if(e->modifiers() & Qt::ControlModifier)
{
///// LEFTBUTTON + CONTROL
///// up/down movement: y-translation
///// left/right movement: x-translation
///// coupled
translateXY(newPosition.x() - mousePosition.x(), newPosition.y() - mousePosition.y());
}
else
{
///// LEFTBUTTON ONLY
///// up/down movement: x-rotation
///// left/right movement: y-rotation
yRot = 180.0f * static_cast<float>(newPosition.x() - mousePosition.x()) / static_cast<float>(width());
xRot = 180.0f * static_cast<float>(newPosition.y() - mousePosition.y()) / static_cast<float>(height());
}
setModified();
mousePosition = newPosition;
updateGL();
startingClick = false;
}
else
e->ignore();
}
