| /* |
| * ==================================================================== |
| * 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. |
| * ==================================================================== |
| */ |
| |
| package org.apache.poi.sl.draw; |
| |
| import java.awt.Font; |
| import java.awt.Graphics2D; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.TreeSet; |
| |
| import org.apache.poi.common.usermodel.fonts.FontInfo; |
| import org.apache.poi.sl.draw.Drawable.DrawableHint; |
| |
| /** |
| * Manages fonts when rendering slides. |
| * |
| * Use this class to handle unknown / missing fonts or to substitute fonts |
| */ |
| public class DrawFontManagerDefault implements DrawFontManager { |
| |
| protected final Set<String> knownSymbolFonts = new TreeSet<>(String.CASE_INSENSITIVE_ORDER); |
| |
| public DrawFontManagerDefault() { |
| knownSymbolFonts.add("Wingdings"); |
| knownSymbolFonts.add("Symbol"); |
| } |
| |
| @Override |
| public FontInfo getMappedFont(Graphics2D graphics, FontInfo fontInfo) { |
| return getFontWithFallback(graphics, Drawable.FONT_MAP, fontInfo); |
| } |
| |
| @Override |
| public FontInfo getFallbackFont(Graphics2D graphics, FontInfo fontInfo) { |
| FontInfo fi = getFontWithFallback(graphics, Drawable.FONT_FALLBACK, fontInfo); |
| if (fi == null) { |
| fi = new DrawFontInfo(Font.SANS_SERIF); |
| } |
| return fi; |
| } |
| |
| public String mapFontCharset(Graphics2D graphics, FontInfo fontInfo, String text) { |
| // TODO: find a real charset mapping solution instead of hard coding for Wingdings |
| return (fontInfo != null && knownSymbolFonts.contains(fontInfo.getTypeface())) |
| ? mapSymbolChars(text) |
| : text; |
| } |
| |
| /** |
| * Symbol fonts like "Wingdings" or "Symbol" have glyphs mapped to a Unicode private use range via the Java font loader, |
| * although a system font viewer might show you the glyphs in the ASCII range. |
| * This helper function maps the chars of the text string to the corresponding private use range chars. |
| * |
| * @param text the input string, typically consists of ASCII chars |
| * @return the mapped string, typically consists of chars in the range of 0xf000 to 0xf0ff |
| * |
| * @since POI 4.0.0 |
| */ |
| public static String mapSymbolChars(String text) { |
| // wingdings doesn't contain high-surrogates, so chars are ok |
| boolean changed = false; |
| char chrs[] = text.toCharArray(); |
| for (int i=0; i<chrs.length; i++) { |
| // only change valid chars |
| if ((0x20 <= chrs[i] && chrs[i] <= 0x7f) || |
| (0xa0 <= chrs[i] && chrs[i] <= 0xff)) { |
| chrs[i] |= 0xf000; |
| changed = true; |
| } |
| } |
| |
| return changed ? new String(chrs) : text; |
| } |
| |
| @Override |
| public Font createAWTFont(Graphics2D graphics, FontInfo fontInfo, double fontSize, boolean bold, boolean italic) { |
| int style = (bold ? Font.BOLD : 0) | (italic ? Font.ITALIC : 0); |
| Font font = new Font(fontInfo.getTypeface(), style, 12); |
| if (Font.DIALOG.equals(font.getFamily())) { |
| // SansSerif is a better choice than Dialog |
| font = new Font(Font.SANS_SERIF, style, 12); |
| } |
| return font.deriveFont((float)fontSize); |
| } |
| |
| private FontInfo getFontWithFallback(Graphics2D graphics, DrawableHint hint, FontInfo fontInfo) { |
| @SuppressWarnings("unchecked") |
| Map<String,String> fontMap = (Map<String,String>)graphics.getRenderingHint(hint); |
| if (fontMap == null) { |
| return fontInfo; |
| } |
| |
| String f = (fontInfo != null) ? fontInfo.getTypeface() : null; |
| String mappedTypeface = null; |
| if (fontMap.containsKey(f)) { |
| mappedTypeface = fontMap.get(f); |
| } else if (fontMap.containsKey("*")) { |
| mappedTypeface = fontMap.get("*"); |
| } |
| |
| return (mappedTypeface != null) ? new DrawFontInfo(mappedTypeface) : fontInfo; |
| } |
| } |