void CWsWindow::SetVisibleRegion(const TRegion& aNewRegion, const TRegion* aTop, TRegion& aNewFadableRegion)
{
STACK_REGION difference;
TBool diffs = EFalse;
difference.Copy(iVisibleRegion);
difference.SubRegion(aNewRegion);
if (!difference.IsEmpty())
{
diffs = ETrue;
if (IsTranslucent())
{
// Andy - If this is a client window (what else could it be) we can also subtract the
// user defined opaque region before doing this:
iScreen->AddRedrawRegion(difference, EFalse);
}
}
difference.Copy(aNewRegion);
if (HasBeenDrawnToScreen())
{
difference.SubRegion(iVisibleRegion);
}
if (!difference.IsEmpty())
{
diffs = ETrue;
STACK_REGION topDiff;
topDiff.Copy(difference);
WS_ASSERT_DEBUG(aTop,EWsPanicRegion);
topDiff.Intersect(*aTop);
difference.SubRegion(topDiff);
iScreen->AddRedrawRegion(topDiff, EFalse, ERedrawTopOnly);
iScreen->AddRedrawRegion(difference, EFalse, ERedrawAll);
topDiff.Close();
}
difference.Close();
AbortDsaIfRequired(aNewRegion, aTop);
if (diffs)
{
ResetVisibleRegion();
iVisibleRegion.Copy(aNewRegion);
PossibleVisibilityChangedEvent(EFalse);
}
iFadableRegion.Copy( aNewFadableRegion );
// Just because the visible region (screen coordinates) didn't change doesn't
// mean the invalid region (window coordinates) didn't change, so we always call this.
iRedraw->VisibleRegionChange();
}
void CWsWindow::AbortDsaIfRequired(const TRegion& aNewRegion, const TRegion* aTop)
{
if (!iDSAs.IsEmpty())
{
// If the top visible region of this window has changed, DSA clients may need
// to be sent a DSA abort, as they may be drawing to a different region
STACK_REGION newTopVisible;
newTopVisible.Copy(aNewRegion); // new visible region
if (aTop!=NULL)
{
newTopVisible.Intersect(*aTop); // area of new visible region not obscured by any other opaque or translucent windows
}
// Build a list of DSA clients that need to be sent a DSA abort
TSglQue<CWsDirectScreenAccess> dsaList(_FOFF(CWsDirectScreenAccess,iAbortLink));
TSglQueIter<CWsDirectScreenAccess> iter(iDSAs);
CWsDirectScreenAccess* dsa;
while ((dsa=iter++)!=NULL)
{
if (dsa->IsAbortRequired(newTopVisible))
{
dsaList.AddLast(*dsa);
}
}
if (!dsaList.IsEmpty())
{
iScreen->AbortDSAs(RDirectScreenAccess::ETerminateRegion, dsaList);
}
newTopVisible.Close();
}
}
/**
This function selects the desired behaviour depending on whether the screen is
run in CHANGETRACKING mode or not.
@param aRegion in screen coordinates
*/
void CWsBackedUpWindow::UpdateScreen(const TRegion& aRegion)
{
if (Screen()->ChangeTracking())
{
STACK_REGION region;
region.Copy(aRegion);
region.Offset(-WsWin()->Origin()); //convert to window coordinates
MarkDirtyAndSchedule(region);
region.Close();
}
else
{
Screen()->AddRedrawRegion(aRegion);
}
}
//This function sets up the quick fadable region.
//It removes anything that cannot be quick faded, and schedules it to be drawn in the normal fashion.
void CWsWindow::SetFadeableRegion(const TRegion& aNewFadableRegion, const TRegion& aTop)
{
WS_ASSERT_DEBUG(iScreen, EWsPanicNoScreen);
iFadableRegion.Copy(aNewFadableRegion);
//Try to figure out if any part of iFadableRegion can be quick faded (i.e. fading applied to
//the screen without first having to redraw all visible windows intersecting the region).
if ( !iFadableRegion.IsEmpty() && iScreen->IsQuickFadeScheduled(this) )
{
if (IsTranslucent())
{
//If a window is semitransparent, then we cannot apply a quickfade to it if
//the window below is faded too.
iScreen->AddRedrawRegion(iVisibleRegion, EFalse, ERedrawAll);
iScreen->RemoveFromQuickFadeList(this);
}
else
{
iQuickFadeRegion.Intersection(iFadableRegion, aTop);
//Remove any regions not possible to quick fade from iQuickFadeRegion and
//schedule these regions for full back-front rendering instead.
STACK_REGION nonQuickFadableRegion;
for(CWsSpriteBase * sprite = iSpriteList; sprite; sprite = sprite->Next())
{
nonQuickFadableRegion.AddRect(sprite->Rect());
}
for(CWsAnim * anim = iAnimList; anim; anim = anim->Next())
{
nonQuickFadableRegion.AddRect(anim->BestRect());
}
RWsTextCursor* const cursor = CWsTop::CurrentTextCursor();
if( cursor && (cursor->Window()==this) && cursor->IsStandardCursorActive() )
{
nonQuickFadableRegion.AddRect(cursor->Rect());
}
//Any regions scheduled for fading but partly or fully covered by transparent windows above them
STACK_REGION coveredFadableRegion;
coveredFadableRegion.Copy(iFadableRegion);
coveredFadableRegion.SubRegion(iQuickFadeRegion);
nonQuickFadableRegion.Union(coveredFadableRegion);
coveredFadableRegion.Close();
nonQuickFadableRegion.Tidy();
//Remove any regions not possible to quick fade from iQuickFadeRegion
iQuickFadeRegion.SubRegion(nonQuickFadableRegion);
if (!nonQuickFadableRegion.CheckError())
{
//Schedule normal drawing (full back to front rendering) for the region not possible to quick fade
if (!nonQuickFadableRegion.IsEmpty())
{
iScreen->AddRedrawRegion(nonQuickFadableRegion, EFalse, ERedrawAll);
}
}
else
{
//Schedule normal drawing for the whole iVisibleRegion if the calculations are broken
iScreen->AddRedrawRegion(iVisibleRegion, EFalse, ERedrawAll);
}
nonQuickFadableRegion.Close();
}
}
else
{
iQuickFadeRegion.Reset();
}
}
void CWsWindow::SetVisibleRegion(const TRegion& aNewRegion, const TRegion* aTop)
{
WS_ASSERT_DEBUG(iScreen, EWsPanicNoScreen);
STACK_REGION difference;
TBool diffs = EFalse;
difference.Copy(iVisibleRegion);
difference.SubRegion(aNewRegion);
if (!difference.IsEmpty())
{
diffs = ETrue;
if (IsTranslucent())
{
iScreen->AddRedrawRegion(difference, EFalse);
}
}
difference.Copy(aNewRegion);
if (HasBeenDrawnToScreen())
{
difference.SubRegion(iVisibleRegion);
}
if (!difference.IsEmpty())
{
diffs = ETrue;
if(!iScreen->ChangeTracking())
{
//the following code will restart animations
STACK_REGION topDiff;
topDiff.Copy(difference);
WS_ASSERT_DEBUG(aTop,EWsPanicRegion);
topDiff.Intersect(*aTop);
difference.SubRegion(topDiff);
iScreen->AddRedrawRegion(topDiff, EFalse, ERedrawTopOnly);
iScreen->AddRedrawRegion(difference, EFalse, ERedrawAll);
topDiff.Close();
}
else if(IsVisible())
{
RestartAnimations(aNewRegion);
}
}
difference.Close();
AbortDsaIfRequired(aNewRegion, aTop);
if (diffs)
{
ResetVisibleRegion();
iVisibleRegion.Copy(aNewRegion);
PossibleVisibilityChangedEvent(EFalse);
if (Redraw()->HasElement())
{
WS_ASSERT_DEBUG(WinType()==EWinTypeClient,EWsPanicWindowType);
if (WinType()==EWinTypeClient)
{
iScreen->WindowElements().SetVisibleRegion(*static_cast<CWsClientWindow*>(this));
}
}
}
// Just because the visible region (screen coordinates) didn't change doesn't
// mean the invalid region (window coordinates) didn't change, so we always call this.
iRedraw->VisibleRegionChange();
}
