struct wxDfbPaintRequest
{
- wxDfbPaintRequest(const wxRect& rect, bool eraseBackground)
- : m_rect(rect), m_eraseBackground(eraseBackground) {}
- wxDfbPaintRequest(const wxDfbPaintRequest& r)
- : m_rect(r.m_rect), m_eraseBackground(r.m_eraseBackground) {}
+ wxDfbPaintRequest(const wxRect& rect) : m_rect(rect) {}
+ wxDfbPaintRequest(const wxDfbPaintRequest& r) : m_rect(r.m_rect) {}
wxRect m_rect;
- bool m_eraseBackground;
};
-WX_DEFINE_ARRAY_PTR(wxDfbPaintRequest*, wxDfbQueuedPaintRequests);
+WX_DEFINE_ARRAY_PTR(wxDfbPaintRequest*, wxDfbQueuedPaintRequestsList);
+
+// Queue of paint requests
+class wxDfbQueuedPaintRequests
+{
+public:
+ ~wxDfbQueuedPaintRequests() { Clear(); }
+
+ // Adds paint request to the queue
+ void Add(const wxRect& rect)
+ { m_queue.push_back(new wxDfbPaintRequest(rect)); }
+
+ // Is the queue empty?
+ bool IsEmpty() const { return m_queue.empty(); }
+
+ // Empties the queue
+ void Clear() { WX_CLEAR_ARRAY(m_queue); }
+
+ // Gets requests in the queue
+ const wxDfbQueuedPaintRequestsList& GetRequests() const { return m_queue; }
+
+private:
+ wxDfbQueuedPaintRequestsList m_queue;
+};
// ============================================================================
// wxTopLevelWindowDFB
m_sizeSet = false;
m_opacity = 255;
m_toPaint = new wxDfbQueuedPaintRequests;
+ m_isPainting = false;
}
bool wxTopLevelWindowDFB::Create(wxWindow *parent,
pos.y = 0;
// create DirectFB window:
- wxIDirectFBDisplayLayerPtr layer = wxDfbGetDisplayLayer();
+ wxIDirectFBDisplayLayerPtr layer(wxIDirectFB::Get()->GetDisplayLayer());
wxCHECK_MSG( layer, false, _T("no display layer") );
DFBWindowDescription desc;
if ( !m_dfbwin->SetOpacity(wxALPHA_TRANSPARENT) )
return false;
- wxWindow::Create(NULL, id, pos, size, style, name);
+ if ( !wxWindow::Create(NULL, id, pos, size, style, name) )
+ return false;
SetParent(parent);
if ( parent )
wxTheApp->ExitMainLoop();
}
- WX_CLEAR_ARRAY(*m_toPaint);
wxDELETE(m_toPaint);
// remove the TLW from DFBWindowID->wxTLW map:
wxSize cursize = GetSize();
if ( cursize.x != width || cursize.y != height )
{
+ // changing window's size changes its surface:
+ InvalidateDfbSurface();
+
m_dfbwin->Resize(width, height);
+
// we must repaint the window after it changed size:
- Refresh();
+ if ( IsShown() )
+ DoRefreshWindow();
}
}
void wxTopLevelWindowDFB::HandleQueuedPaintRequests()
{
- wxDfbQueuedPaintRequests& toPaint = *m_toPaint;
- if ( toPaint.empty() )
+ if ( m_toPaint->IsEmpty() )
return; // nothing to do
+ if ( IsFrozen() || !IsShown() )
+ {
+ // nothing to do if the window is frozen or hidden; clear the queue
+ // and return (note that it's OK to clear the queue even if the window
+ // is frozen, because Thaw() calls Refresh()):
+ m_toPaint->Clear();
+ return;
+ }
+
+ const wxDfbQueuedPaintRequestsList& requests = m_toPaint->GetRequests();
+
// process queued paint requests:
wxRect winRect(wxPoint(0, 0), GetSize());
wxRect paintedRect;
- size_t cnt = toPaint.size();
+ // important note: all DCs created from now until m_isPainting is reset to
+ // false will not update the front buffer as this flag indicates that we'll
+ // blit the entire back buffer to front soon
+ m_isPainting = true;
+
+ size_t cnt = requests.size();
+ wxLogTrace(TRACE_PAINT, _T("%p ('%s'): processing %i paint requests"),
+ this, GetName().c_str(), cnt);
+
for ( size_t i = 0; i < cnt; ++i )
{
- const wxDfbPaintRequest& request = *toPaint[i];
+ const wxDfbPaintRequest& request = *requests[i];
wxRect clipped(request.m_rect);
-
- wxLogTrace(TRACE_PAINT,
- _T("%p ('%s'): processing paint request [x=%i,y=%i,w=%i,h=%i]"),
- this, GetName().c_str(),
- clipped.x, clipped.y, clipped.width, clipped.height);
-
clipped.Intersect(winRect);
if ( clipped.IsEmpty() )
continue; // nothing to refresh
- PaintWindow(clipped, request.m_eraseBackground);
+ wxLogTrace(TRACE_PAINT,
+ _T("%p ('%s'): processing paint request [%i,%i,%i,%i]"),
+ this, GetName().c_str(),
+ clipped.x, clipped.y, clipped.GetRight(), clipped.GetBottom());
+
+ PaintWindow(clipped);
// remember rectangle covering all repainted areas:
if ( paintedRect.IsEmpty() )
paintedRect.Union(clipped);
}
- WX_CLEAR_ARRAY(toPaint);
+ m_isPainting = false;
+
+ m_toPaint->Clear();
if ( paintedRect.IsEmpty() )
return; // no painting occurred, no need to flip
- // flip the surface to make the changes visible:
+ // Flip the surface to make the changes visible. Note that the rectangle we
+ // flip is *superset* of the union of repainted rectangles (created as
+ // "rectangles union" by wxRect::Union) and so some parts of the back
+ // buffer that we didn't touch in this HandleQueuedPaintRequests call will
+ // be copied to the front buffer as well. This is safe/correct thing to do
+ // *only* because wx always use wxIDirectFBSurface::FlipToFront() and so
+ // the back and front buffers contain the same data.
+ //
+ // Note that we do _not_ split m_toPaint into disjoint rectangles and
+ // do FlipToFront() for each of them, because that could result in visible
+ // updating of the screen; instead, we prefer to flip everything at once.
+
DFBRegion r = {paintedRect.GetLeft(), paintedRect.GetTop(),
paintedRect.GetRight(), paintedRect.GetBottom()};
DFBRegion *rptr = (winRect == paintedRect) ? NULL : &r;
- GetDfbSurface()->Flip(rptr, DSFLIP_NONE);
+ GetDfbSurface()->FlipToFront(rptr);
+
+ wxLogTrace(TRACE_PAINT,
+ _T("%p ('%s'): flipped surface: [%i,%i,%i,%i]"),
+ this, GetName().c_str(),
+ paintedRect.x, paintedRect.y,
+ paintedRect.GetRight(), paintedRect.GetBottom());
}
-void wxTopLevelWindowDFB::DoRefreshRect(const wxRect& rect, bool eraseBack)
+void wxTopLevelWindowDFB::DoRefreshRect(const wxRect& rect)
{
- // defer paiting until idle time or until Update() is called:
- m_toPaint->push_back(new wxDfbPaintRequest(rect, eraseBack));
+ // don't overlap outside of the window (NB: 'rect' is in window coords):
+ wxRect r(rect);
+ r.Intersect(wxRect(GetSize()));
+ if ( r.IsEmpty() )
+ return;
+
+ wxLogTrace(TRACE_PAINT,
+ _T("%p ('%s'): [TLW] refresh rect [%i,%i,%i,%i]"),
+ this, GetName().c_str(),
+ rect.x, rect.y, rect.GetRight(), rect.GetBottom());
+
+ // defer painting until idle time or until Update() is called:
+ m_toPaint->Add(rect);
}
void wxTopLevelWindowDFB::Update()
projects / wxWidgets.git / blobdiff