Exemple #1
0
void wxWindowMGL::HandlePaint(MGLDevCtx *dc)
{
    if ( IsFrozen() )
    {
        // Don't paint anything if the window is frozen.
        m_refreshAfterThaw = true;
        return;
    }

#if wxDEBUG_LEVEL >= 2
    // FIXME_MGL -- debugging stuff, to be removed!
    static int debugPaintEvents = -1;
    if ( debugPaintEvents == -1 )
        debugPaintEvents = wxGetEnv(wxT("WXMGL_DEBUG_PAINT_EVENTS"), NULL);
    if ( debugPaintEvents )
    {
        dc->setColorRGB(255,0,255);
        dc->fillRect(-1000,-1000,2000,2000);
        wxMilliSleep(50);
    }
#endif // wxDEBUG_LEVEL >= 2

    MGLRegion clip;
    dc->getClipRegion(clip);
    m_updateRegion = wxRegion(clip);
    m_paintMGLDC = dc;

#if wxUSE_CARET
    // must hide caret temporarily, otherwise we'd get rendering artifacts
    wxCaret *caret = GetCaret();
    if ( caret )
        caret->Hide();
#endif // wxUSE_CARET

    if ( m_eraseBackground != 0 )
    {
        wxWindowDC dc((wxWindow*)this);
        wxEraseEvent eventEr(m_windowId, &dc);
        eventEr.SetEventObject(this);
        HandleWindowEvent(eventEr);
    }
    m_eraseBackground = -1;

    wxNcPaintEvent eventNc(GetId());
    eventNc.SetEventObject(this);
    HandleWindowEvent(eventNc);

    wxPaintEvent eventPt(GetId());
    eventPt.SetEventObject(this);
    HandleWindowEvent(eventPt);

#if wxUSE_CARET
    if ( caret )
        caret->Show();
#endif // wxUSE_CARET

    m_paintMGLDC = NULL;
    m_updateRegion.Clear();
}
Exemple #2
0
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);
    }
}