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51 package org.apache.fop.render.pdf.fonts;
52
53 import org.apache.fop.render.pdf.Font;
54 import org.apache.fop.layout.FontDescriptor;
55 import org.apache.fop.pdf.PDFStream;
56 import org.apache.fop.messaging.MessageHandler;
57
58 import java.util.Map  ;
59 import java.net.URL ;
60
61 import org.apache.fop.render.pdf.FontReader;
62
63 public class LazyFont extends Font implements FontDescriptor {
64
65 private URL metricsFile = null;
66 private URL fontEmbedPath = null;
67 private boolean useKerning = false;
68
69 private boolean isMetricsLoaded = false;
70 private Font realFont = null;
71 private FontDescriptor realFontDescriptor = null;
72
73 public LazyFont(URL fontEmbedPath, URL metricsFile, boolean useKerning){
74 this.metricsFile = metricsFile;
75 this.fontEmbedPath = fontEmbedPath;
76 this.useKerning = useKerning;
77 }
78
79 private void load(){
80 if (!isMetricsLoaded) {
81 isMetricsLoaded = true;
82 try{
83 FontReader reader = new FontReader(metricsFile);
84 reader.useKerning(useKerning);
85 reader.setFontEmbedPath(fontEmbedPath);
86 realFont = reader.getFont();
87 if(realFont instanceof FontDescriptor){
88 realFontDescriptor = (FontDescriptor) realFont;
89 }
90 } catch (Exception ex) {
92 MessageHandler.error("Failed to read font metrics file "
93 + metricsFile.toExternalForm()
94 + ": " + ex.getMessage());
95 }
96 }
97 }
98
99 public Font getRealFont(){
100 return realFont;
101 }
102
103 public String encoding(){
105 load();
106 return realFont.encoding();
107 }
108
109 public String fontName(){
110 load();
111 return realFont.fontName();
112 }
113
114 public byte getSubType(){
115 load();
116 return realFont.getSubType();
117 }
118
119 public char mapChar(char c){
120 load();
121 return realFont.mapChar(c);
122 }
123
124 public int getAscender(int size){
126 load();
127 return realFont.getAscender(size);
128 }
129
130 public int getCapHeight(int size){
131 load();
132 return realFont.getCapHeight(size);
133 }
134
135 public int getDescender(int size){
136 load();
137 return realFont.getDescender(size);
138 }
139
140 public int getXHeight(int size){
141 load();
142 return realFont.getXHeight(size);
143 }
144
145 public int getFirstChar(){
146 load();
147 return realFont.getFirstChar();
148 }
149
150 public int getLastChar(){
151 load();
152 return realFont.getLastChar();
153 }
154
155 public int width(int i, int size){
156 load();
157 return realFont.width(i, size);
158 }
159
160 public int[] getWidths(int size){
161 load();
162 return realFont.getWidths(size);
163 }
164
165 public int getCapHeight(){
167 load();
168 return realFontDescriptor.getCapHeight();
169 }
170
171 public int getDescender(){
172 load();
173 return realFontDescriptor.getDescender();
174 }
175
176 public int getAscender(){
177 load();
178 return realFontDescriptor.getAscender();
179 }
180
181 public int getFlags(){
182 load();
183 return realFontDescriptor.getFlags();
184 }
185
186 public int[] getFontBBox(){
187 load();
188 return realFontDescriptor.getFontBBox();
189 }
190
191 public int getItalicAngle(){
192 load();
193 return realFontDescriptor.getItalicAngle();
194 }
195
196 public int getStemV(){
197 load();
198 return realFontDescriptor.getStemV();
199 }
200
201 public boolean hasKerningInfo(){
202 load();
203 return realFontDescriptor.hasKerningInfo();
204 }
205
206 public Map getKerningInfo(){
207 load();
208 return realFontDescriptor.getKerningInfo();
209 }
210
211 public boolean isEmbeddable(){
212 load();
213 return realFontDescriptor.isEmbeddable();
214 }
215
216 public PDFStream getFontFile(int objNum){
217 load();
218 return realFontDescriptor.getFontFile(objNum);
219 }
220 }
221
222 |
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