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1
51 package org.apache.fop.layout;
52
53 import org.apache.fop.apps.FOPException;
54 import org.apache.fop.render.pdf.CodePointMapping;
55
56 import java.util.Map  ;
57 import java.util.StringTokenizer ;
58
59 public class FontState {
60
61 private FontInfo _fontInfo;
62 private String _fontName;
63 private int _fontSize;
64 private String _fontFamily;
65 private String _fontStyle;
66 private String _fontWeight;
67 private int _fontVariant;
68
69 private FontMetric _metric;
70 private int _letterSpacing;
71
72 private static final Map EMPTY_MAP = new java.util.HashMap ();
73
74
75 public FontState(FontInfo fontInfo, String fontFamily, String fontStyle,
76 String fontWeight, int fontSize,
77 int fontVariant) throws FOPException {
78 _fontInfo = fontInfo;
79 _fontFamily = fontFamily;
80 _fontStyle = fontStyle;
81 _fontWeight = fontWeight;
82 _fontSize = fontSize;
83 String _fontKey = FontInfo.createFontKey(_fontFamily, _fontStyle, _fontWeight);
84 if (!fontInfo.hasFont(_fontKey)) {
86 StringTokenizer st = new StringTokenizer (_fontFamily, ",");
88 while (st.hasMoreTokens()) {
89 String token = st.nextToken().trim();
90 if (token.charAt(0) == '"' || token.charAt(0) == '\'')
92 token = token.substring(1, token.length()-1);
93 else {
94 StringBuffer sb = new StringBuffer ();
97 boolean spaced = false;
98 for (int i=0; i<token.length(); i++) {
99 char c = token.charAt(i);
100 if (!isWhitespace(c)) {
101 sb.append(c);
102 spaced = false;
103 }
104 else if (!spaced) {
105 sb.append(c);
106 spaced = true;
107 }
108 }
109 token = sb.toString();
110 }
111 _fontKey = FontInfo.createFontKey(token, _fontStyle, _fontWeight);
113 if (fontInfo.hasFont(_fontKey)) {
114 _fontFamily = token;
115 break;
116 }
117 }
118 }
119 _fontName = fontInfo.fontLookup(_fontKey);
120 _metric = fontInfo.getMetricsFor(_fontName);
121 _fontVariant = fontVariant;
122 _letterSpacing = 0;
123 }
124
125 public FontState(FontInfo fontInfo, String fontFamily, String fontStyle,
126 String fontWeight, int fontSize,
127 int fontVariant, int letterSpacing) throws FOPException {
128 this(fontInfo, fontFamily, fontStyle, fontWeight, fontSize,
129 fontVariant);
130 _letterSpacing = letterSpacing;
131 }
132
133 private static boolean isWhitespace(char ch) {
134 return (ch <= 0x0020) &&
135 (((((1L << 0x0009) |
136 (1L << 0x000A) |
137 (1L << 0x000C) |
138 (1L << 0x000D) |
139 (1L << 0x0020)) >> ch) & 1L) != 0);
140 }
141
142 public int getAscender() {
143 return _metric.getAscender(_fontSize) / 1000;
144 }
145
146 public int getLetterSpacing() {
147 return _letterSpacing;
148 }
149
150
151 public int getCapHeight() {
152 return _metric.getCapHeight(_fontSize) / 1000;
153 }
154
155 public int getDescender() {
156 return _metric.getDescender(_fontSize) / 1000;
157 }
158
159 public String getFontName() {
160 return _fontName;
161 }
162
163 public int getFontSize() {
164 return _fontSize;
165 }
166
167 public String getFontWeight() {
168 return _fontWeight;
169 }
170
171 public String getFontFamily() {
172 return _fontFamily;
173 }
174
175 public String getFontStyle() {
176 return _fontStyle;
177 }
178
179 public int getFontVariant() {
180 return _fontVariant;
181 }
182
183 public FontInfo getFontInfo() {
184 return _fontInfo;
185 }
186
187 public int getXHeight() {
188 return _metric.getXHeight(_fontSize) / 1000;
189 }
190
191 public Map getKerning() {
192 if (_metric instanceof FontDescriptor) {
193 Map ret = ((FontDescriptor)_metric).getKerningInfo();
194 if (ret != null)
195 return ret;
196 }
197 return EMPTY_MAP;
198 }
199
200 public int width(int charnum) {
201 return _letterSpacing + (_metric.width(charnum, _fontSize) / 1000);
203 }
204
205
209 public char mapChar(char c) {
210
211 if (_metric instanceof org.apache.fop.render.pdf.Font) {
212 return ((org.apache.fop.render.pdf.Font)_metric).mapChar(c);
213 } else if (_metric instanceof org.apache.fop.render.awt.FontMetricsMapper) {
214 return c;
215 }
216
217 char d = CodePointMapping.getMapping("WinAnsiEncoding").mapChar(c);
219 if (d != 0) {
220 c = d;
221 } else {
222 c = '#';
223 }
224 return c;
225 }
226
227 private int enWidth=-1;
228 private int emWidth=-1;
229
230 private final int getEmWidth() {
231 if (emWidth<0) {
232 char mappedChar = mapChar('m');
233 if (mappedChar == '#') {
236 emWidth = 500 * getFontSize();
237 } else {
238 emWidth = width(mappedChar);
239 }
240 }
241 return emWidth;
242 }
243
244 private final int getEnWidth() {
245 if (enWidth<0) {
246 char mappedChar = mapChar('n');
247 if (mappedChar != '#') {
250 enWidth = (getEmWidth()*9)/10;
252 } else {
253 enWidth = width(mappedChar);
254 }
255 }
256 return enWidth;
257 }
258
259
265 public int getCharWidth(char c) {
266 if ((c == '\n') || (c == '\r') || (c == '\t')) {
267 return getCharWidth(' ');
268 } else {
269 char mappedChar = mapChar(c);
270 if (mappedChar == '#' || mappedChar == 0) {
271 if (c == '#') {
274 return width(mappedChar);
275 } else if (c == ' ') {
276 return getEmWidth();
277 } else if (c == '\u00A0') {
278 return getCharWidth(' ');
279 } else if (c == '\u2000') {
280 return getEnWidth();
281 } else if (c == '\u2001') {
282 return getEmWidth();
283 } else if (c == '\u2002') {
284 return getEnWidth();
285 } else if (c == '\u2003') {
286 return getEmWidth();
287 } else if (c == '\u2004') {
288 return getEmWidth() / 3;
289 } else if (c == '\u2005') {
290 return getEmWidth() / 4;
291 } else if (c == '\u2006') {
292 return getEmWidth() / 6;
293 } else if (c == '\u2007') {
294 return getCharWidth(' ');
295 } else if (c == '\u2008') {
296 return getCharWidth('.');
297 } else if (c == '\u2009') {
298 return getEmWidth() / 5;
299 } else if (c == '\u200A') {
300 return getEmWidth() / 10;
301 } else if (c == '\u200B') {
302 return 1;
303 } else if (c == '\u202F') {
304 return getCharWidth(' ') / 2;
305 } else if (c == '\u3000') {
306 return getCharWidth(' ') * 2;
307 } else {
308 return width(mappedChar);
309 }
310 } else {
311 return width(mappedChar);
312 }
313 }
314 }
315
316
319 public int getWordWidth(String word) {
320 if (word == null)
321 return 0;
322 int wordLength = word.length();
323 int width = 0;
324 char[] characters = new char[wordLength];
325 word.getChars(0, wordLength, characters, 0);
326 for (int i = 0; i < wordLength; i++) {
327 width += getCharWidth(characters[i]);
328 }
329 return width;
330 }
331
332 }
333
334
335
336 |
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