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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.fonts;
-
- /**
- * Font utilities.
- */
- public class FontUtil {
-
- /**
- * Parses an CSS2 (SVG and XSL-FO) font weight (normal, bold, 100-900) to
- * an integer.
- * See http://www.w3.org/TR/REC-CSS2/fonts.html#propdef-font-weight
- * TODO: Implement "lighter" and "bolder".
- * @param text the font weight to parse
- * @return an integer between 100 and 900 (100, 200, 300...)
- */
- public static int parseCSS2FontWeight(String text) {
- int weight = 400;
- try {
- weight = Integer.parseInt(text);
- weight = ((int)weight / 100) * 100;
- weight = Math.max(weight, 100);
- weight = Math.min(weight, 900);
- } catch (NumberFormatException nfe) {
- //weight is no number, so convert symbolic name to number
- if (text.equals("normal")) {
- weight = 400;
- } else if (text.equals("bold")) {
- weight = 700;
- } else {
- throw new IllegalArgumentException(
- "Illegal value for font weight: '"
- + text
- + "'. Use one of: 100, 200, 300, "
- + "400, 500, 600, 700, 800, 900, "
- + "normal (=400), bold (=700)");
- }
- }
- return weight;
- }
-
- /**
- * Removes all white space from a string (used primarily for font names)
- * @param str the string
- * @return the processed result
- */
- public static String stripWhiteSpace(String str) {
- if (str != null) {
- StringBuffer stringBuffer = new StringBuffer(str.length());
- for (int i = 0, strLen = str.length(); i < strLen; i++) {
- final char ch = str.charAt(i);
- if (ch != ' ' && ch != '\r' && ch != '\n' && ch != '\t') {
- stringBuffer.append(ch);
- }
- }
- return stringBuffer.toString();
- }
- return str;
- }
-
- /** font constituent names which identify a font as being of "italic" style */
- private static final String[] ITALIC_WORDS = {
- Font.STYLE_ITALIC, Font.STYLE_OBLIQUE, Font.STYLE_INCLINED
- };
-
- /** font constituent names which identify a font as being of "light" weight */
- private static final String[] LIGHT_WORDS = {"light"};
- /** font constituent names which identify a font as being of "medium" weight */
- private static final String[] MEDIUM_WORDS = {"medium"};
- /** font constituent names which identify a font as being of "demi/semi" weight */
- private static final String[] DEMI_WORDS = {"demi", "semi"};
- /** font constituent names which identify a font as being of "bold" weight */
- private static final String[] BOLD_WORDS = {"bold"};
- /** font constituent names which identify a font as being of "extra bold" weight */
- private static final String[] EXTRA_BOLD_WORDS = {"extrabold", "extra bold", "black",
- "heavy", "ultra", "super"};
-
- /**
- * Guesses the font style of a font using its name.
- * @param fontName the font name
- * @return "normal" or "italic"
- */
- public static String guessStyle(String fontName) {
- if (fontName != null) {
- for (int i = 0; i < ITALIC_WORDS.length; i++) {
- if (fontName.indexOf(ITALIC_WORDS[i]) != -1) {
- return Font.STYLE_ITALIC;
- }
- }
- }
- return Font.STYLE_NORMAL;
- }
-
- /**
- * Guesses the font weight of a font using its name.
- * @param fontName the font name
- * @return an integer between 100 and 900
- */
- public static int guessWeight(String fontName) {
- // weight
- int weight = Font.WEIGHT_NORMAL;
-
- for (int i = 0; i < BOLD_WORDS.length; i++) {
- if (fontName.indexOf(BOLD_WORDS[i]) != -1) {
- weight = Font.WEIGHT_BOLD;
- break;
- }
- }
- for (int i = 0; i < MEDIUM_WORDS.length; i++) {
- if (fontName.indexOf(MEDIUM_WORDS[i]) != -1) {
- weight = Font.WEIGHT_NORMAL + 100; //500
- break;
- }
- }
- //Search for "semi/demi" before "light", but after "bold"
- //(normally semi/demi-bold is meant, but it can also be semi/demi-light)
- for (int i = 0; i < DEMI_WORDS.length; i++) {
- if (fontName.indexOf(DEMI_WORDS[i]) != -1) {
- weight = Font.WEIGHT_BOLD - 100; //600
- break;
- }
- }
- for (int i = 0; i < EXTRA_BOLD_WORDS.length; i++) {
- if (fontName.indexOf(EXTRA_BOLD_WORDS[i]) != -1) {
- weight = Font.WEIGHT_EXTRA_BOLD;
- break;
- }
- }
- for (int i = 0; i < LIGHT_WORDS.length; i++) {
- if (fontName.indexOf(LIGHT_WORDS[i]) != -1) {
- weight = Font.WEIGHT_LIGHT;
- break;
- }
- }
- return weight;
- }
- }
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