// with or 0 for the default brush
virtual WXHBRUSH MSWControlColor(WXHDC hDC);
+ // this function should return the brush to paint the children controls
+ // background or 0 if this window doesn't impose any particular background
+ // on its children
+ //
+ // the base class version uses MSWGetBgColourForChild() and returns a solid
+ // brush if we have a non default background colour or 0 otherwise
+ virtual WXHBRUSH MSWGetBgBrushForChild(WXHDC WXUNUSED(hDC), wxWindow *child)
+ {
+ return MSWGetSolidBgBrushForChild(child);
+ }
+
+ // return the background colour of this window under the given child
+ // (possible grand child)
+ //
+ // this is a hack as if the background is themed, there is no single colour
+ // representing it, but sometimes we can't use the pattern brush returned
+ // by MSWGetBgBrushForChild() anyhow and then this function is used as
+ // fallback
+ //
+ // the base class version returns bg colour if it had been explicitely set
+ // or wxNullColour otherwise
+ virtual wxColour MSWGetBgColourForChild(wxWindow *child);
+
+ // convenience function: returns a solid brush of the colour returned by
+ // MSWGetBgColourForChild() or 0
+ WXHBRUSH MSWGetSolidBgBrushForChild(wxWindow *child);
+
+ // normally just calls MSWGetBgBrushForChild() on the parent window but may
+ // be overridden if the default background brush is not suitable for some
+ // reason (e.g. wxStaticBox uses MSWGetSolidBgBrushForChild() instead)
+ virtual WXHBRUSH MSWGetBgBrushForSelf(wxWindow *parent, WXHDC hDC)
+ {
+ return parent->MSWGetBgBrushForChild(hDC, this);
+ }
+
+ // return the background brush to use for this window by quering the parent
+ // windows via their MSWGetBgBrushForChild() recursively
+ WXHBRUSH MSWGetBgBrush(WXHDC hDC);
+
// Responds to colour changes: passes event on to children.
void OnSysColourChanged(wxSysColourChangedEvent& event);
::SetBkMode((HDC)pDC, TRANSPARENT);
- // check if we should adapt our background to our parent
- for ( wxWindow *win = this; win; win = win->GetParent() )
- {
- if ( win->IsTopLevel() )
- {
- // don't go beyond the first top level parent
- break;
- }
-
- if ( win->GetBackgroundStyle() == wxBG_STYLE_COLOUR )
- {
- // parent window has solid colour, so it doesn't look
- // transparent and hence we shouldn't show notebook background
- wxBrush *brush = wxTheBrushList->FindOrCreateBrush
- (
- win->GetBackgroundColour(),
- wxSOLID
- );
-
- return (WXHBRUSH)brush->GetResourceHandle();
- }
-
-#if wxUSE_UXTHEME && wxUSE_NOTEBOOK
- // check for the special case of the notebooks which draw themed
- // background when themes are enabled
- wxNotebook *nbook = wxDynamicCast(win, wxNotebook);
- if ( nbook )
- {
- // return value may be NULL but it is ok: if the first parent
- // notebook doesn't use themes, then we don't have to process
- // this message at all, so let default processing take place
- return nbook->GetThemeBackgroundBrush(pDC, this);
- }
-#endif // wxUSE_UXTHEME && wxUSE_NOTEBOOK
- }
+ hbr = MSWGetBgBrush(pDC);
- // let the control deal with background itself
- return MSWGetDefaultBgBrush();
+ return hbr ? hbr : MSWGetDefaultBgBrush();
}
WXHBRUSH wxControl::MSWControlColorDisabled(WXHDC pDC)
bool wxWindowMSW::HandlePaint()
{
-// if (GetExtraStyle() & wxWS_EX_THEMED_BACKGROUND)
-// return false;
-
HRGN hRegion = ::CreateRectRgn(0, 0, 0, 0); // Dummy call to get a handle
if ( !hRegion )
wxLogLastError(wxT("CreateRectRgn"));
bool wxWindowMSW::HandleEraseBkgnd(WXHDC hdc)
{
- // Prevents flicker when dragging
- if ( ::IsIconic(GetHwnd()) )
- return true;
-
wxDCTemp dc(hdc);
dc.SetHDC(hdc);
void wxWindowMSW::OnEraseBackground(wxEraseEvent& event)
{
- switch ( GetBackgroundStyle() )
+ // standard controls always erase their background themselves (although the
+ // user may try to override it in a derived class)
+ if ( IsOfStandardClass() )
{
- default:
- wxFAIL_MSG( _T("unexpected background style") );
- // fall through
+ event.Skip();
+ return;
+ }
- case wxBG_STYLE_CUSTOM:
- // don't skip the event here, custom background means that the app
- // is drawing it itself in its OnPaint()
- break;
+ if ( GetBackgroundStyle() == wxBG_STYLE_CUSTOM )
+ {
+ // don't skip the event here, custom background means that the app
+ // is drawing it itself in its OnPaint(), so don't draw it at all
+ // now to avoid flicker
+ return;
+ }
- case wxBG_STYLE_SYSTEM:
-#if wxUSE_NOTEBOOK && wxUSE_UXTHEME && !defined(__WXUNIVERSAL__)
- // automatically apply the tab control theme background to any
- // child panels to have the same look as the native property sheet
- // dialogs
- if ( !IsOfStandardClass() )
- {
- for ( wxWindow *win = this; win; win = win->GetParent() )
- {
- wxNotebook *nbook = wxDynamicCast(win, wxNotebook);
- if ( nbook )
- {
- nbook->DoEraseBackground(event);
- return;
- }
- }
- }
-#endif // wxUSE_NOTEBOOK
- event.Skip();
- break;
- case wxBG_STYLE_COLOUR:
- // we have a fixed solid background colour, do use it
- RECT rect;
- ::GetClientRect(GetHwnd(), &rect);
+ // do default background painting
+ wxDC& dc = *event.GetDC();
+ HBRUSH hBrush = (HBRUSH)MSWGetBgBrush(dc.GetHDC());
+ if ( hBrush )
+ {
+ RECT rc;
+ ::GetClientRect(GetHwnd(), &rc);
+ ::FillRect(GetHdcOf(dc), &rc, hBrush);
+ }
+ else
+ {
+ // let the system paint the background
+ event.Skip();
+ }
+}
+
+WXHBRUSH wxWindowMSW::MSWGetSolidBgBrushForChild(wxWindow *child)
+{
+ wxColour col = MSWGetBgColourForChild(child);
+ if ( col.Ok() )
+ {
+ // draw children with the same colour as the parent
+ wxBrush *brush = wxTheBrushList->FindOrCreateBrush(col, wxSOLID);
+
+ return (WXHBRUSH)brush->GetResourceHandle();
+ }
- HBRUSH hBrush = ::CreateSolidBrush(
- wxColourToPalRGB(GetBackgroundColour()));
- if ( !hBrush )
- wxLogLastError(wxT("CreateSolidBrush"));
+ return 0;
+}
- HDC hdc = GetHdcOf((*event.GetDC()));
+wxColour wxWindowMSW::MSWGetBgColourForChild(wxWindow * WXUNUSED(child))
+{
+ return m_hasBgCol ? GetBackgroundColour() : wxNullColour;
+}
- ::FillRect(hdc, &rect, hBrush);
- ::DeleteObject(hBrush);
+WXHBRUSH wxWindow::MSWGetBgBrush(WXHDC hDC)
+{
+ for ( wxWindow *win = this; win; win = win->GetParent() )
+ {
+ // background is not inherited beyond the containing TLW
+ if ( win->IsTopLevel() )
+ break;
+
+ WXHBRUSH hBrush = MSWGetBgBrushForSelf(win, hDC);
+ if ( hBrush )
+ return hBrush;
}
+
+ return 0;
}
// ---------------------------------------------------------------------------
projects / wxWidgets.git / commitdiff
