app/newerClipping/WindowLayer.cpp

96 				// reset the dirty region, since
100 				// blocking on the global region lock to
177 	// start from full region (as if the window was fully visible)
179 	// clip to region still available on screen
188 WindowLayer::GetFullRegion(BRegion* region) const
191 	region->Set(BRect(fFrame.left - 4, fFrame.top - 4,
194 	region->Include(BRect(fFrame.left - 4, fFrame.top - 20,
200 WindowLayer::GetBorderRegion(BRegion* region)
218 	*region = fBorderRegion;
223 WindowLayer::GetContentRegion(BRegion* region)
229 	*region = fContentRegion;
271 	// take along the dirty region which have not
304 	// put the previous border region into the dirty region as well
392 WindowLayer::ProcessDirtyRegion(BRegion* region)
403 		// when the dirty region was empty.
405 		// the dirty region in MessageReceived(),
406 		// it will make the region empty again,
411 		// the region as it likes.
415 	fDirtyRegion.Include(region);
424 	// region lock, and result in ProcessDirtyRegion()
436 	// is sufficient. If there was no dirty region before,
471 WindowLayer::CopyContents(BRegion* region, int32 xOffset, int32 yOffset)
477 		BRegion newDirty(*region);
479 		// clip the region to the visible contents at the
483 		region->IntersectWith(&VisibleContentRegion());
484 		if (region->CountRects() > 0) {
485 			region->OffsetBy(xOffset, yOffset);
486 			region->IntersectWith(&fVisibleContentRegion);
487 			if (region->CountRects() > 0) {
488 				// if the region still contains any rects
490 				region->OffsetBy(-xOffset, -yOffset);
492 				newDirty.Exclude(region);
495 					fDrawingEngine->CopyRegion(region, xOffset, yOffset);
500 				// with the region that we could copy
501 				_ShiftPartOfRegion(&fDirtyRegion, region, xOffset, yOffset);
503 					_ShiftPartOfRegion(&fCurrentUpdateSession.DirtyRegion(), region, xOffset, yOffset);
505 					_ShiftPartOfRegion(&fPendingUpdateSession.DirtyRegion(), region, xOffset, yOffset);
509 		// what is left visible from the original region
510 		// at the destination after the region which could be
513 		// if no region could be copied, but that's alright,
529 WindowLayer::_ShiftPartOfRegion(BRegion* region, BRegion* regionToShift,
534 	common.IntersectWith(region);
536 		// cut the common part from the region,
538 		region->Exclude(&common);
540 		region->Include(&common);
599 				// enforce the dirty region of the update session
607 		// TODO: this is a region that needs to be cached later in the server
609 		// in an update (fInUpdate), than we can set this region and remember
649 				// enforce the dirty region of the update session
701 	// construct the region of the border that needs redrawing
704 // TODO: why is it not enough to only intersect with the dirty region?
705 // is it faster to intersect the dirty region with the visible when it
707 	// intersect with our visible region
709 	// intersect with the dirty region
831 				// will have the dirty region from the update