| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.traits; |
| |
| import java.io.ObjectStreamException; |
| |
| import org.apache.fop.fo.Constants; |
| |
| /** Enumeration class for writing mode trait. */ |
| public final class WritingMode extends TraitEnum { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private static final String[] WRITING_MODE_NAMES = new String[] |
| {"lr-tb", "rl-tb", "tb-lr", "tb-rl"}; |
| |
| private static final int[] WRITING_MODE_VALUES = new int[] |
| {Constants.EN_LR_TB, Constants.EN_RL_TB, Constants.EN_TB_LR, Constants.EN_TB_RL}; |
| |
| /** writing mode: lr-tb */ |
| public static final WritingMode LR_TB = new WritingMode(0); |
| /** writing mode: rl-tb */ |
| public static final WritingMode RL_TB = new WritingMode(1); |
| /** writing mode: tb-lr */ |
| public static final WritingMode TB_LR = new WritingMode(2); |
| /** writing mode: tb-rl */ |
| public static final WritingMode TB_RL = new WritingMode(3); |
| |
| private static final WritingMode[] WRITING_MODES |
| = new WritingMode[] {LR_TB, RL_TB, TB_LR, TB_RL}; |
| |
| private WritingMode(int index) { |
| super(WRITING_MODE_NAMES[index], WRITING_MODE_VALUES[index]); |
| } |
| |
| /** |
| * Assign writing mode traits from this trait to the specified |
| * writing mode traits setter. |
| * @param wms a writing mode traits setter |
| * @param explicit true if writing mode property explicitly specified |
| */ |
| public void assignWritingModeTraits(WritingModeTraitsSetter wms, boolean explicit) { |
| Direction inlineProgressionDirection; |
| Direction blockProgressionDirection; |
| Direction columnProgressionDirection; |
| Direction rowProgressionDirection; |
| Direction shiftDirection; |
| switch (getEnumValue()) { |
| case Constants.EN_RL_TB: |
| inlineProgressionDirection = Direction.RL; |
| blockProgressionDirection = Direction.TB; |
| columnProgressionDirection = Direction.RL; |
| rowProgressionDirection = Direction.TB; |
| shiftDirection = Direction.BT; |
| break; |
| case Constants.EN_TB_LR: |
| inlineProgressionDirection = Direction.TB; |
| blockProgressionDirection = Direction.LR; |
| columnProgressionDirection = Direction.TB; |
| rowProgressionDirection = Direction.LR; |
| shiftDirection = Direction.RL; |
| break; |
| case Constants.EN_TB_RL: |
| inlineProgressionDirection = Direction.TB; |
| blockProgressionDirection = Direction.RL; |
| columnProgressionDirection = Direction.TB; |
| rowProgressionDirection = Direction.RL; |
| shiftDirection = Direction.LR; |
| break; |
| case Constants.EN_LR_TB: |
| default: |
| inlineProgressionDirection = Direction.LR; |
| blockProgressionDirection = Direction.TB; |
| columnProgressionDirection = Direction.LR; |
| rowProgressionDirection = Direction.TB; |
| shiftDirection = Direction.BT; |
| break; |
| } |
| wms.setInlineProgressionDirection(inlineProgressionDirection); |
| wms.setBlockProgressionDirection(blockProgressionDirection); |
| wms.setColumnProgressionDirection(columnProgressionDirection); |
| wms.setRowProgressionDirection(rowProgressionDirection); |
| wms.setShiftDirection(shiftDirection); |
| wms.setWritingMode(this, explicit); |
| } |
| |
| /** |
| * Determine if WM is horizontal or not. |
| * @return true if horizontal |
| */ |
| public boolean isHorizontal() { |
| switch (getEnumValue()) { |
| case Constants.EN_LR_TB: |
| case Constants.EN_RL_TB: |
| return true; |
| case Constants.EN_TB_LR: |
| case Constants.EN_TB_RL: |
| return false; |
| default: |
| assert false; |
| return true; |
| } |
| } |
| |
| /** |
| * Determine if WM is vertical or not. |
| * @return true if vertical |
| */ |
| public boolean isVertical() { |
| return !isHorizontal(); |
| } |
| |
| /** |
| * Returns the enumeration/singleton object based on its name. |
| * @param name the name of the enumeration value |
| * @return the enumeration object |
| */ |
| public static WritingMode valueOf(String name) { |
| for (WritingMode writingMode : WRITING_MODES) { |
| if (writingMode.getName().equalsIgnoreCase(name)) { |
| return writingMode; |
| } |
| } |
| throw new IllegalArgumentException("Illegal writing mode: " + name); |
| } |
| |
| /** |
| * Returns the enumeration/singleton object based on its name. |
| * @param enumValue the enumeration value |
| * @return the enumeration object |
| */ |
| public static WritingMode valueOf(int enumValue) { |
| for (WritingMode writingMode : WRITING_MODES) { |
| if (writingMode.getEnumValue() == enumValue) { |
| return writingMode; |
| } |
| } |
| throw new IllegalArgumentException("Illegal writing mode: " + enumValue); |
| } |
| |
| private Object readResolve() throws ObjectStreamException { |
| return valueOf(getName()); |
| } |
| |
| /** {@inheritDoc} */ |
| public String toString() { |
| return getName(); |
| } |
| |
| } |