kits/interface/SplitLayout.cpp

28 	const char* const kItemCollapsibleField = "BSplitLayout:item:collapsible";
29 	const char* const kItemWeightField = "BSplitLayout:item:weight";
374 	BLayoutItem* item = AddView(index, child);
375 	if (item)
376 		SetItemWeight(item, weight);
378 	return item;
383 BSplitLayout::AddItem(BLayoutItem* item)
385 	return BAbstractLayout::AddItem(item);
390 BSplitLayout::AddItem(int32 index, BLayoutItem* item)
392 	return BAbstractLayout::AddItem(index, item);
397 BSplitLayout::AddItem(BLayoutItem* item, float weight)
399 	return AddItem(-1, item, weight);
404 BSplitLayout::AddItem(int32 index, BLayoutItem* item, float weight)
406 	bool success = AddItem(index, item);
408 		SetItemWeight(item, weight);
425 BSplitLayout::ItemWeight(BLayoutItem* item) const
427 	if (ItemLayoutInfo* info = _ItemLayoutInfo(item))
439 	BLayoutItem* item = ItemAt(index);
440 	SetItemWeight(item, weight);
443 		int32 visibleIndex = fVisibleItems.IndexOf(item);
458 BSplitLayout::SetItemWeight(BLayoutItem* item, float weight)
460 	if (ItemLayoutInfo* info = _ItemLayoutInfo(item))
638 		// layout the item
639 		BLayoutItem* item = ItemAt(i);
640 		int32 visibleIndex = fVisibleItems.IndexOf(item);
642 			_LayoutItem(item, BRect(), false);
646 		// get the dimensions of the item
651 		_LayoutItem(item, BRect(xOffset, yOffset, xOffset + width,
667 	if (SplitterItem* item = _SplitterItemAt(index))
668 		return item->Frame();
735 	// update the item weights
785 BSplitLayout::ItemArchived(BMessage* into, BLayoutItem* item, int32 index) const
787 	ItemLayoutInfo* info = _ItemLayoutInfo(item);
799 	BLayoutItem* item, int32 index)
801 	ItemLayoutInfo* info = _ItemLayoutInfo(item);
813 BSplitLayout::ItemAdded(BLayoutItem* item, int32 atIndex)
832 	item->SetLayoutData(itemInfo);
833 	SetItemWeight(item, 1);
839 BSplitLayout::ItemRemoved(BLayoutItem* item, int32 atIndex)
848 	delete _ItemLayoutInfo(item);
849 	item->SetLayoutData(NULL);
935 BSplitLayout::_LayoutItem(BLayoutItem* item, BRect frame, bool visible)
938 	ItemLayoutInfo* info = _ItemLayoutInfo(item);
946 	info->min = item->MinSize();
947 	info->max = item->MaxSize();
949 	if (item->HasHeightForWidth()) {
952 		item->GetHeightForWidth(size.width, &minHeight, &maxHeight, NULL);
957 	// layout the item
959 		item->AlignInFrame(frame);
964 BSplitLayout::_LayoutItem(BLayoutItem* item, ItemLayoutInfo* info)
966 	// update the visibility of the item
967 	bool isVisible = item->IsVisible();
970 		item->SetVisible(info->isVisible);
972 	// nothing more to do, if the item is not visible
976 	item->AlignInFrame(info->layoutFrame);
978 	// if the item became visible, we need to update its internal layout
981 		item->Relayout(true);
1009 	// collapse an item, if it would become smaller than half its minimum
1013 	// of the item yet.
1032 		// one collapsed item -- check whether that violates the constraints
1038 				// we cannot collapse the previous item
1044 				// we cannot collapse the next item
1051 		// no collapsed item -- check whether there is a close solution
1076 					// Neither item is collapsible although there's not enough
1110 	// compute the size for one collapsed item; for none collapsed item we
1138 		// previous item
1146 		// next item
1159 		// previous item
1167 		// next item
1185 	// If the item visibility is to be changed, we need to update the splitter
1193 	// and the next item. Actually we would only need to invalidate height for
1216 BSplitLayout::_ItemLayoutInfo(BLayoutItem* item) const
1218 	return (ItemLayoutInfo*)item->LayoutData();
1261 		BLayoutItem* item = ItemAt(i);
1262 		if (item->IsVisible())
1263 			fVisibleItems.AddItem(item);
1268 		if (item->HasHeightForWidth())
1269 			fHeightForWidthItems.AddItem(item);
1287 			BLayoutItem* item = (BLayoutItem*)fVisibleItems.ItemAt(i);
1288 			BSize min = item->MinSize();
1289 			BSize max = item->MaxSize();
1290 			BSize preferred = item->PreferredSize();
1297 			float weight = ItemWeight(item);
1359 			BLayoutItem* item = (BLayoutItem*)fHeightForWidthItems.ItemAt(i);
1360 			int32 index = fVisibleItems.IndexOf(item);
1363 				item->GetHeightForWidth(