bool
Container::eventFilter(QObject *s, QEvent *e)
{
// kdDebug() << e->type() << endl;
switch(e->type())
{
case QEvent::MouseButtonPress:
{
m_insertBegin = QPoint(-1, -1);
m_mousePressEventReceived = true;
kdDebug() << "QEvent::MouseButtonPress sender object = " << s->name()
<< "of type " << s->className() << endl;
kdDebug() << "QEvent::MouseButtonPress this = " << name() << endl;
m_moving = static_cast<QWidget*>(s);
QMouseEvent *mev = static_cast<QMouseEvent*>(e);
m_grab = QPoint(mev->x(), mev->y());
// we are drawing a connection
if(FormManager::self()->isCreatingConnection()) {
drawConnection(mev);
return true;
}
if(((mev->state() == ControlButton) || (mev->state() == ShiftButton))
&& (!FormManager::self()->isInserting())) // multiple selection mode
{
if(m_form->selectedWidgets()->findRef(m_moving) != -1) // widget is already selected
{
if(m_form->selectedWidgets()->count() > 1) // we remove it from selection
unSelectWidget(m_moving);
else // the widget is the only selected, so it means we want to copy it
{
//m_copyRect = m_moving->geometry();
m_state = CopyingWidget;
if(m_form->formWidget())
m_form->formWidget()->initBuffer();
}
}
else // the widget is not yet selected, we add it
setSelectedWidget(m_moving, true, (mev->button() == RightButton));
}
else if((m_form->selectedWidgets()->count() > 1))//&& (!m_form->manager()->isInserting())) // more than one widget selected
{
if(m_form->selectedWidgets()->findRef(m_moving) == -1) // widget is not selected, it becomes the only selected widget
setSelectedWidget(m_moving, false, (mev->button() == RightButton));
// If the widget is already selected, we do nothing (to ease widget moving, etc.)
}
else// if(!m_form->manager()->isInserting())
setSelectedWidget(m_moving, false, (mev->button() == RightButton));
// we are inserting a widget or drawing a selection rect in the form
if((/*s == m_container &&*/ FormManager::self()->isInserting()) || ((s == m_container) && !m_toplevel))
{
int tmpx,tmpy;
if(!FormManager::self()->snapWidgetsToGrid() || (mev->state() == (LeftButton|ControlButton|AltButton)))
{
tmpx = mev->x();
tmpy = mev->y();
}
else
{
int gridX = m_form->gridSize();
int gridY = m_form->gridSize();
tmpx = int( (float)mev->x() / ((float)gridX) + 0.5 ); // snap to grid
tmpx *= gridX;
tmpy = int( (float)mev->y() / ((float)gridY) + 0.5 );
tmpy *= gridX;
}
m_insertBegin = (static_cast<QWidget*>(s))->mapTo(m_container, QPoint(tmpx, tmpy));
if(m_form->formWidget())
m_form->formWidget()->initBuffer();
if(!FormManager::self()->isInserting())
m_state = DrawingSelectionRect;
}
else {
if(s->inherits("QTabWidget")) // to allow changing page by clicking tab
return false;
}
if (m_objectForMouseReleaseEvent) {
const bool res = handleMouseReleaseEvent(m_objectForMouseReleaseEvent, &m_mouseReleaseEvent);
m_objectForMouseReleaseEvent = 0;
return res;
}
return true;
}
case QEvent::MouseButtonRelease:
{
QMouseEvent *mev = static_cast<QMouseEvent*>(e);
if (!m_mousePressEventReceived) {
m_mouseReleaseEvent = *mev;
m_objectForMouseReleaseEvent = s;
return true;
}
m_mousePressEventReceived = false;
m_objectForMouseReleaseEvent = 0;
return handleMouseReleaseEvent(s, mev);
}
case QEvent::MouseMove:
{
QMouseEvent *mev = static_cast<QMouseEvent*>(e);
if(m_insertBegin!=QPoint(-1,-1) && FormManager::self()->isInserting() && ((mev->state() == LeftButton) || (mev->state() == (LeftButton|ControlButton)) ||
(mev->state() == (LeftButton|ControlButton|AltButton)) || (mev->state() == (LeftButton|ShiftButton)) ) )
// draw the insert rect
{
drawInsertRect(mev, s);
return true;
}
// Creating a connection, we highlight sender and receiver, and we draw a link between them
else if(FormManager::self()->isCreatingConnection() && !FormManager::self()->createdConnection()->sender().isNull())
{
ObjectTreeItem *tree = m_form->objectTree()->lookup(FormManager::self()->createdConnection()->sender());
if(!tree || !tree->widget())
return true;
if(m_form->formWidget() && (tree->widget() != s))
m_form->formWidget()->highlightWidgets(tree->widget(), static_cast<QWidget*>(s));
}
else if(m_insertBegin!=QPoint(-1,-1) && s == m_container && !m_toplevel && (mev->state() != ControlButton) && !FormManager::self()->isCreatingConnection()) // draw the selection rect
{
if((mev->state() != LeftButton) || /*m_inlineEditing*/ m_state == InlineEditing)
return true;
int topx = (m_insertBegin.x() < mev->x()) ? m_insertBegin.x() : mev->x();
int topy = (m_insertBegin.y() < mev->y()) ? m_insertBegin.y() : mev->y();
int botx = (m_insertBegin.x() > mev->x()) ? m_insertBegin.x() : mev->x();
int boty = (m_insertBegin.y() > mev->y()) ? m_insertBegin.y() : mev->y();
QRect r = QRect(QPoint(topx, topy), QPoint(botx, boty));
m_insertRect = r;
if(m_form->formWidget())
m_form->formWidget()->drawRect(r, 1);
m_state = DoingNothing;
return true;
}
else if(mev->state() == (LeftButton|ControlButton)) // draw the insert rect for the copied widget
{
if(s == m_container)// || (m_form->selectedWidgets()->count() > 1))
return true;
drawCopiedWidgetRect(mev);
return true;
}
else if( ( (mev->state() == Qt::LeftButton) || (mev->state() == (LeftButton|ControlButton|AltButton)) )
&& !FormManager::self()->isInserting() && (m_state != CopyingWidget)) // we are dragging the widget(s) to move it
{
if(!m_toplevel && m_moving == m_container) // no effect for form
return false;
if((!m_moving) || (!m_moving->parentWidget()))// || (m_moving->parentWidget()->inherits("QWidgetStack")))
return true;
moveSelectedWidgetsBy(mev->x() - m_grab.x(), mev->y() - m_grab.y());
m_state = MovingWidget;
}
return true; // eat
}
case QEvent::Paint: // Draw the dotted background
{
if(s != m_container)
return false;
int gridX = m_form->gridSize();
int gridY = m_form->gridSize();
QPainter p(m_container);
p.setPen(QPen(white, 2));
p.setRasterOp(XorROP);
int cols = m_container->width() / gridX;
int rows = m_container->height() / gridY;
for(int rowcursor = 1; rowcursor <= rows; ++rowcursor)
{
for(int colcursor = 1; colcursor <= cols; ++colcursor)
{
p.drawPoint(-1 + colcursor *gridX, -1 + rowcursor *gridY);
}
}
return false;
}
case QEvent::Resize: // we are resizing a widget, so we set m_move to true -> the layout will be reloaded when releasing mouse
{
if(m_form->interactiveMode())
m_state = MovingWidget;
break;
}
//case QEvent::AccelOverride:
case QEvent::KeyPress:
{
QKeyEvent *kev = static_cast<QKeyEvent*>(e);
if(kev->key() == Key_F2) // pressing F2 == double-clicking
{
m_state = InlineEditing;
QWidget *w;
// try to find the widget which was clicked last and should be edited
if(m_form->selectedWidgets()->count() == 1)
w = m_form->selectedWidgets()->first();
else if(m_form->selectedWidgets()->findRef(m_moving) != -1)
w = m_moving;
else
w = m_form->selectedWidgets()->last();
m_form->library()->startEditing(w->className(), w, this);
}
else if(kev->key() == Key_Escape)
{
if(FormManager::self()->isCreatingConnection())
FormManager::self()->stopCreatingConnection();
else if(FormManager::self()->isInserting())
FormManager::self()->stopInsert();
return true;
}
else if((kev->key() == Key_Control) && (m_state == MovingWidget))
{
if(!m_moving)
return true;
// we simulate a mouse move event to update screen
QMouseEvent *mev = new QMouseEvent(QEvent::MouseMove, m_moving->mapFromGlobal(QCursor::pos()), NoButton,
LeftButton|ControlButton );
eventFilter(m_moving, mev);
delete mev;
}
else if(kev->key() == FormManager::self()->contextMenuKey())
{
FormManager::self()->createContextMenu(static_cast<QWidget*>(s), this, false);
return true;
}
else if (kev->key() == Key_Delete)
{
FormManager::self()->deleteWidget();
return true;
}
// directional buttons move the widget
else if(kev->key() == Key_Left){ // move the widget of gridX to the left
moveSelectedWidgetsBy(-form()->gridSize(), 0);
return true;
}
else if(kev->key() == Key_Right){ // move the widget of gridX to the right
moveSelectedWidgetsBy(form()->gridSize(), 0);
return true;
}
else if(kev->key() == Key_Up){ // move the widget of gridY to the top
moveSelectedWidgetsBy(0, - form()->gridSize());
return true;
}
else if(kev->key() == Key_Down){ // move the widget of gridX to the bottom
moveSelectedWidgetsBy(0, form()->gridSize());
return true;
}
else if((kev->key() == Key_Tab) || (kev->key() == Key_BackTab)){
ObjectTreeItem *item = form()->objectTree()->lookup(form()->selectedWidgets()->first()->name());
if(!item || !item->parent())
return true;
ObjectTreeList *list = item->parent()->children();
if(list->count() == 1)
return true;
int index = list->findRef(item);
if(kev->key() == Key_BackTab){
if(index == 0) // go back to the last item
index = list->count() - 1;
else
index = index - 1;
}
else {
if(index == int(list->count() - 1)) // go back to the first item
index = 0;
else
index = index + 1;
}
ObjectTreeItem *nextItem = list->at(index);
if(nextItem && nextItem->widget())
form()->setSelectedWidget(nextItem->widget(), false);
}
return true;
}
case QEvent::KeyRelease:
{
QKeyEvent *kev = static_cast<QKeyEvent*>(e);
if((kev->key() == Key_Control) && (m_state == CopyingWidget)) {
// cancel copying
//m_copyRect = QRect();
if(m_form->formWidget())
m_form->formWidget()->clearForm();
}
return true;
}
case QEvent::MouseButtonDblClick: // editing
{
kdDebug() << "Container: Mouse dbl click for widget " << s->name() << endl;
QWidget *w = static_cast<QWidget*>(s);
if(!w)
return false;
//m_inlineEditing = true;
m_state = InlineEditing;
m_form->library()->startEditing(w->className(), w, this);
return true;
}
case QEvent::ContextMenu:
case QEvent::Enter:
case QEvent::Leave:
case QEvent::FocusIn:
case QEvent::FocusOut:
// case QEvent::DragEnter:
// case QEvent::DragMove:
// case QEvent::DragLeave:
return true; // eat them
default:
return false; // let the widget do the rest ...
}
return false;
}
