void wxWindowDFB::PaintWindow(const wxRect& rect)
{
wxCHECK_RET( !IsFrozen() && IsShown(), "shouldn't be called" );
wxLogTrace(TRACE_PAINT,
"%p ('%s'): painting region [%i,%i,%i,%i]",
this, GetName().c_str(),
rect.x, rect.y, rect.GetRight(), rect.GetBottom());
m_updateRegion = rect;
// FIXME_DFB: don't waste time rendering the area if it's fully covered
// by some children, go directly to rendering the children
// (unless some child has HasTransparentBackground()=true!)
// NB: unconditionally send wxEraseEvent, because our implementation of
// wxWindow::Refresh() ignores the eraseBack argument
wxWindowDC dc((wxWindow*)this);
wxEraseEvent eventEr(m_windowId, &dc);
eventEr.SetEventObject(this);
HandleWindowEvent(eventEr);
wxRect clientRect(GetClientRect());
// only send wxNcPaintEvent if drawing at least part of nonclient area:
if ( !clientRect.Contains(rect) )
{
wxNcPaintEvent eventNc(GetId());
eventNc.SetEventObject(this);
HandleWindowEvent(eventNc);
}
else
{
wxLogTrace(TRACE_PAINT, "%p ('%s'): not sending wxNcPaintEvent",
this, GetName().c_str());
}
// only send wxPaintEvent if drawing at least part of client area:
if ( rect.Intersects(clientRect) )
{
wxPaintEvent eventPt(GetId());
eventPt.SetEventObject(this);
HandleWindowEvent(eventPt);
}
else
{
wxLogTrace(TRACE_PAINT, "%p ('%s'): not sending wxPaintEvent",
this, GetName().c_str());
}
// draw window's overlays on top of the painted window, if we have any:
PaintOverlays(rect);
m_updateRegion.Clear();
// client area portion of 'rect':
wxRect rectClientOnly(rect);
rectClientOnly.Intersect(clientRect);
// paint the children:
wxPoint origin = GetClientAreaOrigin();
wxWindowList& children = GetChildren();
for ( wxWindowList::iterator i = children.begin();
i != children.end(); ++i )
{
wxWindow *child = *i;
if ( child->IsFrozen() || !child->IsShown() )
continue; // don't paint anything if the window is frozen or hidden
// compute child's area to repaint
wxRect childrect(child->GetRect());
childrect.Offset(origin);
if ( child->CanBeOutsideClientArea() )
childrect.Intersect(rect);
else
childrect.Intersect(rectClientOnly);
if ( childrect.IsEmpty() )
continue;
// and repaint it:
childrect.Offset(-child->GetPosition());
childrect.Offset(-origin);
child->PaintWindow(childrect);
}
}
void wxWindow::Refresh(bool eraseBackground, const wxRect *rect)
{
wxRect rectClient; // the same rectangle in client coordinates
wxPoint origin = GetClientAreaOrigin();
wxSize size = GetClientSize();
if ( rect )
{
// the rectangle passed as argument is in client coordinates
rectClient = *rect;
// don't refresh anything beyond the client area (scrollbars for
// example)
if ( rectClient.GetRight() > size.x )
rectClient.SetRight(size.x);
if ( rectClient.GetBottom() > size.y )
rectClient.SetBottom(size.y);
}
else // refresh the entire client area
{
// x,y is already set to 0 by default
rectClient.SetSize(size);
}
// convert refresh rectangle to window coordinates:
wxRect rectWin(rectClient);
rectWin.Offset(origin);
// debugging helper
#ifdef WXDEBUG_REFRESH
static bool s_refreshDebug = false;
if ( s_refreshDebug )
{
wxWindowDC dc(this);
dc.SetBrush(*wxCYAN_BRUSH);
dc.SetPen(*wxTRANSPARENT_PEN);
dc.DrawRectangle(rectWin);
// under Unix we use "--sync" X option for this
#if defined(__WXMSW__) && !defined(__WXMICROWIN__)
::GdiFlush();
::Sleep(200);
#endif // __WXMSW__
}
#endif // WXDEBUG_REFRESH
wxWindowNative::Refresh(eraseBackground, &rectWin);
// Refresh all sub controls if any.
wxWindowList& children = GetChildren();
for ( wxWindowList::iterator i = children.begin(); i != children.end(); ++i )
{
wxWindow *child = *i;
// only refresh subcontrols if they are visible:
if ( child->IsTopLevel() || !child->IsShown() || child->IsFrozen() )
continue;
// ...and when the subcontrols are in the update region:
wxRect childrect(child->GetRect());
childrect.Intersect(rectClient);
if ( childrect.IsEmpty() )
continue;
// refresh the subcontrol now:
childrect.Offset(-child->GetPosition());
// NB: We must call wxWindowNative version because we need to refresh
// the entire control, not just its client area, and this is why we
// don't account for child client area origin here neither. Also
// note that we don't pass eraseBackground to the child, but use
// true instead: this is because we can't be sure that
// eraseBackground=false is safe for children as well and not only
// for the parent.
child->wxWindowNative::Refresh(eraseBackground, &childrect);
}
}
