{
if ( GetChildren().GetCount() > 0 )
{
- wxSize size = DoGetBestSize();
-
- // for compatibility with the old versions and because it really looks
- // slightly more pretty like this, add a pad
- size.x += 7;
- size.y += 14;
-
- SetClientSize(size);
+ SetClientSize(DoGetBestSize());
}
//else: do nothing if we have no children
}
// return the size best suited for the current window
wxSize wxWindowBase::DoGetBestSize() const
{
- if ( GetChildren().GetCount() > 0 )
+ if ( m_windowSizer )
+ {
+ return m_windowSizer->GetMinSize();
+ }
+#if wxUSE_CONSTRAINTS
+ else if ( m_constraints )
+ {
+ wxConstCast(this, wxWindowBase)->SatisfyConstraints();
+
+ // our minimal acceptable size is such that all our windows fit inside
+ int maxX = 0,
+ maxY = 0;
+
+ for ( wxWindowList::Node *node = GetChildren().GetFirst();
+ node;
+ node = node->GetNext() )
+ {
+ wxLayoutConstraints *c = node->GetData()->GetConstraints();
+ if ( !c )
+ {
+ // it's not normal that we have an unconstrained child, but
+ // what can we do about it?
+ continue;
+ }
+
+ int x = c->right.GetValue(),
+ y = c->bottom.GetValue();
+
+ if ( x > maxX )
+ maxX = x;
+
+ if ( y > maxY )
+ maxY = y;
+
+ // TODO: we must calculate the overlaps somehow, otherwise we
+ // will never return a size bigger than the current one :-(
+ }
+
+ return wxSize(maxX, maxY);
+ }
+#endif // wxUSE_CONSTRAINTS
+ else if ( GetChildren().GetCount() > 0 )
{
// our minimal acceptable size is such that all our windows fit inside
int maxX = 0,
maxY = wy + wh;
}
+ // for compatibility with the old versions and because it really looks
+ // slightly more pretty like this, add a pad
+ maxX += 7;
+ maxY += 14;
+
return wxSize(maxX, maxY);
}
else
m_constraintsInvolvedIn = (wxWindowList *) NULL;
}
}
-#endif
+
+#endif // wxUSE_CONSTRAINTS
void wxWindowBase::SetSizer(wxSizer *sizer, bool deleteOld)
{
- if (m_windowSizer && deleteOld) delete m_windowSizer;
+ if ( deleteOld )
+ delete m_windowSizer;
m_windowSizer = sizer;
- SetAutoLayout( sizer != 0 );
+ SetAutoLayout( sizer != NULL );
}
void wxWindowBase::SetSizerAndFit(wxSizer *sizer, bool deleteOld)
sizer->SetSizeHints( (wxWindow*) this );
}
+#if wxUSE_CONSTRAINTS
+
+void wxWindowBase::SatisfyConstraints()
+{
+ wxLayoutConstraints *constr = GetConstraints();
+ bool wasOk = constr && constr->AreSatisfied();
+
+ ResetConstraints(); // Mark all constraints as unevaluated
+
+ int noChanges = 1;
+
+ // if we're a top level panel (i.e. our parent is frame/dialog), our
+ // own constraints will never be satisfied any more unless we do it
+ // here
+ if ( wasOk )
+ {
+ while ( noChanges > 0 )
+ {
+ LayoutPhase1(&noChanges);
+ }
+ }
+
+ LayoutPhase2(&noChanges);
+}
+
+#endif // wxUSE_CONSTRAINTS
+
bool wxWindowBase::Layout()
{
// If there is a sizer, use it instead of the constraints
#if wxUSE_CONSTRAINTS
else
{
- wxLayoutConstraints *constr = GetConstraints();
- bool wasOk = constr && constr->AreSatisfied();
-
- ResetConstraints(); // Mark all constraints as unevaluated
-
- // if we're a top level panel (i.e. our parent is frame/dialog), our
- // own constraints will never be satisfied any more unless we do it
- // here
- if ( wasOk )
- {
- int noChanges = 1;
- while ( noChanges > 0 )
- {
- constr->SatisfyConstraints(this, &noChanges);
- }
- }
-
- DoPhase(1); // Layout children
- DoPhase(2); // Layout grand children
+ SatisfyConstraints(); // Find the right constraints values
SetConstraintSizes(); // Recursively set the real window sizes
}
#endif
}
#if wxUSE_CONSTRAINTS
-// Do a phase of evaluating constraints: the default behaviour. wxSizers may
-// do a similar thing, but also impose their own 'constraints' and order the
-// evaluation differently.
+
+// first phase of the constraints evaluation: set our own constraints
bool wxWindowBase::LayoutPhase1(int *noChanges)
{
wxLayoutConstraints *constr = GetConstraints();
- if ( constr )
- {
- return constr->SatisfyConstraints(this, noChanges);
- }
- else
- return TRUE;
+
+ return !constr || constr->SatisfyConstraints(this, noChanges);
}
+// second phase: set the constraints for our children
bool wxWindowBase::LayoutPhase2(int *noChanges)
{
*noChanges = 0;
// Layout children
DoPhase(1);
+
+ // Layout grand children
DoPhase(2);
+
return TRUE;
}
// Do a phase of evaluating child constraints
bool wxWindowBase::DoPhase(int phase)
{
- int noIterations = 0;
- int maxIterations = 500;
- int noChanges = 1;
- int noFailures = 0;
+ // the list containing the children for which the constraints are already
+ // set correctly
wxWindowList succeeded;
- while ((noChanges > 0) && (noIterations < maxIterations))
+
+ // the max number of iterations we loop before concluding that we can't set
+ // the constraints
+ static const int maxIterations = 500;
+
+ for ( int noIterations = 0; noIterations < maxIterations; noIterations++ )
{
- noChanges = 0;
- noFailures = 0;
- wxWindowList::Node *node = GetChildren().GetFirst();
- while (node)
+ int noChanges = 0;
+
+ // loop over all children setting their constraints
+ for ( wxWindowList::Node *node = GetChildren().GetFirst();
+ node;
+ node = node->GetNext() )
{
wxWindow *child = node->GetData();
- if ( !child->IsTopLevel() )
+ if ( child->IsTopLevel() )
{
- wxLayoutConstraints *constr = child->GetConstraints();
- if ( constr )
- {
- if ( !succeeded.Find(child) )
- {
- int tempNoChanges = 0;
- bool success = ( (phase == 1) ? child->LayoutPhase1(&tempNoChanges) : child->LayoutPhase2(&tempNoChanges) ) ;
- noChanges += tempNoChanges;
- if ( success )
- {
- succeeded.Append(child);
- }
- }
- }
+ // top level children are not inside our client area
+ continue;
+ }
+
+ if ( !child->GetConstraints() || succeeded.Find(child) )
+ {
+ // this one is either already ok or nothing we can do about it
+ continue;
+ }
+
+ int tempNoChanges = 0;
+ bool success = phase == 1 ? child->LayoutPhase1(&tempNoChanges)
+ : child->LayoutPhase2(&tempNoChanges);
+ noChanges += tempNoChanges;
+
+ if ( success )
+ {
+ succeeded.Append(child);
}
- node = node->GetNext();
}
- noIterations++;
+ if ( !noChanges )
+ {
+ // constraints are set
+ break;
+ }
}
return TRUE;
projects / wxWidgets.git / blobdiff