| /* |
| * |
| * 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 flash.fonts; |
| |
| import flash.swf.types.GlyphEntry; |
| import flash.util.IntMapLRUCache; |
| |
| /** |
| * Provides a simple LRU cache layer to a FontFace. |
| */ |
| public abstract class CachedFontFace extends FontFace |
| { |
| protected int style; |
| protected FSType fsType; |
| protected String copyright; |
| protected String trademark; |
| public boolean useTwips; |
| public static final short GLYPH_CACHE_PURGE = 10; |
| public final GlyphCache glyphCache; |
| |
| protected CachedFontFace(int maxCachedGlyphs) |
| { |
| glyphCache = new GlyphCache(this, maxCachedGlyphs / 5, maxCachedGlyphs, GLYPH_CACHE_PURGE); |
| } |
| |
| protected CachedFontFace(int maxCachedGlyphs, int style, FSType fsType, String copyright, String trademark, boolean useTwips) |
| { |
| this(maxCachedGlyphs); |
| this.style = style; |
| this.fsType = fsType; |
| this.copyright = copyright; |
| this.trademark = trademark; |
| this.useTwips = useTwips; |
| } |
| |
| public boolean isBold() |
| { |
| return isBold(style); |
| } |
| |
| public boolean isItalic() |
| { |
| return isItalic(style); |
| } |
| |
| public FSType getFSType() |
| { |
| return fsType; |
| } |
| |
| public void setFSType(FSType t) |
| { |
| this.fsType = t; |
| } |
| |
| public String getCopyright() |
| { |
| return copyright; |
| } |
| |
| public void setCopyright(String c) |
| { |
| this.copyright = c; |
| } |
| |
| public String getTrademark() |
| { |
| return trademark; |
| } |
| |
| public void setTrademark(String t) |
| { |
| this.trademark = t; |
| } |
| |
| /** |
| * Checks if a style is BOLD (1) or BOLD-ITALIC (3) |
| * |
| * @param style |
| * @return boolean if bold style |
| */ |
| public static boolean isBold(int style) |
| { |
| return style == BOLD || style == BOLD + ITALIC; |
| } |
| |
| /** |
| * Checks if a style is ITALIC (2) or BOLD-ITALIC (3) |
| * |
| * @param style |
| * @return boolean if italic style |
| */ |
| public static boolean isItalic(int style) |
| { |
| return style == ITALIC || style == ITALIC + BOLD; |
| } |
| |
| public static int guessStyleFromSubFamilyName(String subFamilyName) |
| { |
| int style = PLAIN; |
| |
| if (subFamilyName != null) |
| { |
| subFamilyName = subFamilyName.toLowerCase(); |
| |
| if (subFamilyName.indexOf("regular") != -1) |
| { |
| style = PLAIN; |
| } |
| |
| if (subFamilyName.indexOf("bold") != -1) |
| { |
| style += BOLD; |
| } |
| |
| if (subFamilyName.indexOf("italic") != -1 || |
| subFamilyName.indexOf("oblique") != -1) |
| { |
| style += ITALIC; |
| } |
| } |
| |
| return style; |
| } |
| |
| protected abstract GlyphEntry createGlyphEntry(char c); |
| |
| protected abstract GlyphEntry createGlyphEntry(char c, char referenceChar); |
| |
| |
| static class GlyphCache extends IntMapLRUCache |
| { |
| private CachedFontFace fontFace; |
| |
| GlyphCache(CachedFontFace face, int initialSize, int maxSize, int purgeSize) |
| { |
| super(initialSize, maxSize, purgeSize); |
| fontFace = face; |
| } |
| |
| public Object fetch(int key) |
| { |
| char c = (char)key; |
| |
| if (fontFace.canDisplay(c)) |
| { |
| return fontFace.createGlyphEntry(c, c); |
| } |
| else |
| { |
| return null; |
| } |
| } |
| } |
| } |