| /* |
| * Copyright 2004-2005 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /* $Id$ */ |
| |
| package org.apache.fop.layoutmgr; |
| |
| /** |
| * The interface for LayoutManagers which generate block areas |
| */ |
| public interface BlockLevelLayoutManager extends LayoutManager { |
| |
| static final int NO_ADJUSTMENT = -1; |
| static final int SPACE_BEFORE_ADJUSTMENT = 0; |
| static final int SPACE_AFTER_ADJUSTMENT = 1; |
| static final int LINE_NUMBER_ADJUSTMENT = 2; |
| static final int LINE_HEIGHT_ADJUSTMENT = 3; |
| |
| int negotiateBPDAdjustment(int adj, KnuthElement lastElement); |
| |
| void discardSpace(KnuthGlue spaceGlue); |
| |
| /** |
| * @return true if this element must be kept together |
| */ |
| boolean mustKeepTogether(); |
| |
| /** |
| * @return true if this element must be kept with the previous element. |
| */ |
| boolean mustKeepWithPrevious(); |
| |
| /** |
| * @return true if this element must be kept with the next element. |
| */ |
| boolean mustKeepWithNext(); |
| |
| } |