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- /*
- * 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.fo.properties;
-
- // FOP
- import java.util.List;
-
- import org.apache.fop.datatypes.Length;
- import org.apache.fop.datatypes.Numeric;
- import org.apache.fop.fo.Constants;
- import org.apache.fop.fo.PropertyList;
- import org.apache.fop.fo.expr.PropertyException;
- import org.apache.fop.fonts.FontInfo;
- import org.apache.fop.fonts.FontTriplet;
- import org.apache.fop.util.CompareUtil;
-
- /**
- * Collection of CommonFont properties
- */
- public final class CommonFont {
-
- /** cache holding canonical CommonFont instances (only those with
- * absolute font-size and font-size-adjust) */
- private static final PropertyCache<CommonFont> CACHE = new PropertyCache<CommonFont>();
-
- /** hashcode of this instance */
- private int hash = -1;
-
- /** The "font-family" property. */
- private final FontFamilyProperty fontFamily;
-
- /** The "font-selection-strategy" property. */
- private final EnumProperty fontSelectionStrategy;
-
- /** The "font-stretch" property. */
- private final EnumProperty fontStretch;
-
- /** The "font-style" property. */
- private final EnumProperty fontStyle;
-
- /** The "font-variant" property. */
- private final EnumProperty fontVariant;
-
- /** The "font-weight" property. */
- private final EnumProperty fontWeight;
-
- /** The "font-size" property. */
- public final Length fontSize;
-
- /** The "font-size-adjust" property. */
- public final Numeric fontSizeAdjust;
-
-
- /**
- * Construct a CommonFont instance
- *
- * @param fontFamily the font-family property
- * @param fontSelectionStrategy the font-selection-strategy property
- * @param fontStretch the font-stretch property
- * @param fontStyle the font-style property
- * @param fontVariant the font-variant property
- * @param fontWeight the font-weight property
- * @param fontSize the font-size (possibly non-cached)
- * @param fontSizeAdjust the font-size-adjust (possibly non-cached)
- */
- private CommonFont(FontFamilyProperty fontFamily,
- EnumProperty fontSelectionStrategy,
- EnumProperty fontStretch,
- EnumProperty fontStyle,
- EnumProperty fontVariant,
- EnumProperty fontWeight,
- Length fontSize,
- Numeric fontSizeAdjust) {
- this.fontFamily = fontFamily;
- this.fontSelectionStrategy = fontSelectionStrategy;
- this.fontStretch = fontStretch;
- this.fontStyle = fontStyle;
- this.fontVariant = fontVariant;
- this.fontWeight = fontWeight;
- this.fontSize = fontSize;
- this.fontSizeAdjust = fontSizeAdjust;
- }
-
- /**
- * Returns a CommonFont instance for the given PropertyList
- * If the font-size and font-size-adjust properties are absolute
- * the entire instance will be cached.
- * If not, then a distinct instance will be returned, with
- * as much cached information as possible.
- *
- * @param pList the PropertyList to get the properties from
- * @return a CommonFont instance corresponding to the properties
- * @throws PropertyException if there was a problem getting the properties
- */
- public static CommonFont getInstance(PropertyList pList) throws PropertyException {
- FontFamilyProperty fontFamily = (FontFamilyProperty) pList.get(Constants.PR_FONT_FAMILY);
- EnumProperty fontSelectionStrategy
- = (EnumProperty) pList.get(Constants.PR_FONT_SELECTION_STRATEGY);
- EnumProperty fontStretch = (EnumProperty) pList.get(Constants.PR_FONT_STRETCH);
- EnumProperty fontStyle = (EnumProperty) pList.get(Constants.PR_FONT_STYLE);
- EnumProperty fontVariant = (EnumProperty) pList.get(Constants.PR_FONT_VARIANT);
- EnumProperty fontWeight = (EnumProperty) pList.get(Constants.PR_FONT_WEIGHT);
- Numeric fontSizeAdjust = pList.get(Constants.PR_FONT_SIZE_ADJUST).getNumeric();
- Length fontSize = pList.get(Constants.PR_FONT_SIZE).getLength();
-
- CommonFont commonFont = new CommonFont(fontFamily,
- fontSelectionStrategy,
- fontStretch,
- fontStyle,
- fontVariant,
- fontWeight,
- fontSize,
- fontSizeAdjust);
-
- return CACHE.fetch(commonFont);
- }
-
- /** @return an array with the font-family names */
- private String[] getFontFamily() {
- List<Property> lst = fontFamily.getList();
- String[] fontFamily = new String[lst.size()];
- for (int i = 0, c = lst.size(); i < c; i++) {
- fontFamily[i] = lst.get(i).getString();
- }
- return fontFamily;
- }
-
- /** @return the first font-family name in the list */
- public String getFirstFontFamily() {
- return fontFamily.list.get(0).getString();
- }
-
- /** @return the "font-selection-strategy" property */
- public int getFontSelectionStrategy() {
- return fontSelectionStrategy.getEnum();
- }
-
- /** @return the "font-stretch" property */
- public int getFontStretch() {
- return fontStretch.getEnum();
- }
-
- /** @return the "font-style" property */
- public int getFontStyle() {
- return fontStyle.getEnum();
- }
-
- /** @return the "font-variant" property */
- public int getFontVariant() {
- return fontVariant.getEnum();
- }
-
- /** @return the "font-weight" property */
- public int getFontWeight() {
- return fontWeight.getEnum();
- }
-
- /** @return the "font-size" property. */
- public Length getFontSize() {
- return fontSize;
- }
-
- /** @return the "font-size-adjust" property. */
- public Numeric getFontSizeAdjust() {
- return fontSizeAdjust;
- }
-
- /**
- * Create and return an array of <code>FontTriplets</code> based on
- * the properties stored in the instance variables.
- * @param fontInfo a font info object
- * @return a font triplet
- */
- public FontTriplet[] getFontState(FontInfo fontInfo) {
- int fw;
- switch (fontWeight.getEnum()) {
- case Constants.EN_100: fw = 100; break;
- case Constants.EN_200: fw = 200; break;
- case Constants.EN_300: fw = 300; break;
- case Constants.EN_400: fw = 400; break;
- case Constants.EN_500: fw = 500; break;
- case Constants.EN_600: fw = 600; break;
- case Constants.EN_700: fw = 700; break;
- case Constants.EN_800: fw = 800; break;
- case Constants.EN_900: fw = 900; break;
- default: fw = 400;
- }
-
- String style;
- switch (fontStyle.getEnum()) {
- case Constants.EN_ITALIC:
- style = "italic";
- break;
- case Constants.EN_OBLIQUE:
- style = "oblique";
- break;
- case Constants.EN_BACKSLANT:
- style = "backslant";
- break;
- default:
- style = "normal";
- }
- // NOTE: this is incomplete. font-size may be specified with
- // various kinds of keywords too
- //int fontVariant = propertyList.get("font-variant").getEnum();
- FontTriplet[] triplets = fontInfo.fontLookup(
- getFontFamily(),
- style, fw);
- return triplets;
- }
-
- /** {@inheritDoc} */
- @Override
- public boolean equals(Object obj) {
- if (this == obj) {
- return true;
- }
- if (!(obj instanceof CommonFont)) {
- return false;
- }
-
- CommonFont other = (CommonFont) obj;
- return CompareUtil.equal(fontFamily, other.fontFamily)
- && CompareUtil.equal(fontSelectionStrategy, other.fontSelectionStrategy)
- && CompareUtil.equal(fontSize, other.fontSize)
- && CompareUtil.equal(fontSizeAdjust, other.fontSizeAdjust)
- && CompareUtil.equal(fontStretch, other.fontStretch)
- && CompareUtil.equal(fontStyle, other.fontStyle)
- && CompareUtil.equal(fontVariant, other.fontVariant)
- && CompareUtil.equal(fontWeight, other.fontWeight);
- }
-
- /** {@inheritDoc} */
- public int hashCode() {
- if (this.hash == -1) {
- int hash = 17;
- hash = 37 * hash + CompareUtil.getHashCode(fontSize);
- hash = 37 * hash + CompareUtil.getHashCode(fontSizeAdjust);
- hash = 37 * hash + CompareUtil.getHashCode(fontFamily);
- hash = 37 * hash + CompareUtil.getHashCode(fontSelectionStrategy);
- hash = 37 * hash + CompareUtil.getHashCode(fontStretch);
- hash = 37 * hash + CompareUtil.getHashCode(fontStyle);
- hash = 37 * hash + CompareUtil.getHashCode(fontVariant);
- hash = 37 * hash + CompareUtil.getHashCode(fontWeight);
- this.hash = hash;
- }
- return hash;
- }
- }
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