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51 package org.apache.fop.fo;
52
53 import org.apache.fop.layout.Area;
55 import org.apache.fop.layout.BlockArea;
56 import org.apache.fop.layout.FontState;
57 import org.apache.fop.layout.*;
58 import org.apache.fop.datatypes.*;
59 import org.apache.fop.fo.properties.*;
60 import org.apache.fop.apps.FOPException;
61
62
66 public class FOText extends FONode {
67
68 private char[] ca;
69
70 private FontState fs;
71 private float red;
72 private float green;
73 private float blue;
74 private int wrapOption;
75 private int whiteSpaceCollapse;
76 private int verticalAlign;
77
78 private TextState ts;
80
81 public FOText(StringBuffer  b, FObj parent) {
82 super(parent);
83 this.ca = new char[b.length()];
84 b.getChars(0,b.length(),ca,0);
85 }
86
87 public void setTextState(TextState ts) {
88 this.ts = ts;
89 }
90
91 public boolean willCreateArea() {
92 this.whiteSpaceCollapse =
93 this.parent.properties.get("white-space-collapse").getEnum();
94 if (this.whiteSpaceCollapse == WhiteSpaceCollapse.FALSE
95 && ca.length > 0) {
96 return true;
97 }
98
99 for (int i = 0; i < ca.length; i++) {
100 char ch = ca[i];
101 if (!((ch == ' ') || (ch == '\n') || (ch == '\r')
102 || (ch == '\t'))) { return true;
104 }
105 }
106 return false;
107 }
108
109 public boolean mayPrecedeMarker() {
110 for (int i = 0; i < ca.length; i++) {
111 char ch = ca[i];
112 if ((ch != ' ') || (ch != '\n') || (ch != '\r')
113 || (ch != '\t')) { return true;
115 }
116 }
117 return false;
118 }
119
120 public int layout(Area area) throws FOPException {
121 if (!(area instanceof BlockArea)) {
122 log.error("text outside block area"
123 + new String (ca, 0, ca.length));
124 return Status.OK;
125 }
126 if (this.marker == START) {
127 String fontFamily =
128 this.parent.properties.get("font-family").getString();
129 String fontStyle =
130 this.parent.properties.get("font-style").getString();
131 String fontWeight =
132 this.parent.properties.get("font-weight").getString();
133 int fontSize =
134 this.parent.properties.get("font-size").getLength().mvalue();
135 int fontVariant =
138 this.parent.properties.get("font-variant").getEnum();
139
140 int letterSpacing =
141 this.parent.properties.get("letter-spacing").getLength().mvalue();
142 this.fs = new FontState(area.getFontInfo(), fontFamily,
143 fontStyle, fontWeight, fontSize,
144 fontVariant, letterSpacing);
145
146 ColorType c = this.parent.properties.get("color").getColorType();
147 this.red = c.red();
148 this.green = c.green();
149 this.blue = c.blue();
150
151 this.verticalAlign =
152 this.parent.properties.get("vertical-align").getEnum();
153
154 this.wrapOption =
155 this.parent.properties.get("wrap-option").getEnum();
156 this.whiteSpaceCollapse =
157 this.parent.properties.get("white-space-collapse").getEnum();
158 this.marker = 0;
159 }
160 int orig_start = this.marker;
161 this.marker = addText((BlockArea)area, fs, red, green, blue,
162 wrapOption, this.getLinkSet(),
163 whiteSpaceCollapse, ca, this.marker, ca.length,
164 ts, verticalAlign);
165 if (this.marker == -1) {
166
167
168
177 return Status.OK;
179 } else if (this.marker != orig_start) {
180 return Status.AREA_FULL_SOME;
181 } else {
182 return Status.AREA_FULL_NONE;
183 }
184 }
185
186 public static int addText(BlockArea ba, FontState fontState, float red,
189 float green, float blue, int wrapOption,
190 LinkSet ls, int whiteSpaceCollapse,
191 char data[], int start, int end,
192 TextState textState, int vAlign) {
193 if (fontState.getFontVariant() == FontVariant.SMALL_CAPS) {
194 FontState smallCapsFontState;
195 try {
196 int smallCapsFontHeight =
197 (int)(((double)fontState.getFontSize()) * 0.8d);
198 smallCapsFontState = new FontState(fontState.getFontInfo(),
199 fontState.getFontFamily(),
200 fontState.getFontStyle(),
201 fontState.getFontWeight(),
202 smallCapsFontHeight,
203 FontVariant.NORMAL);
204 } catch (FOPException ex) {
205 smallCapsFontState = fontState;
206 }
209
210 char c;
212 char newdata[] = new char[end];
213 boolean isLowerCase;
214 int caseStart;
215 FontState fontStateToUse;
216 for (int i = start; i < end; ) {
217 caseStart = i;
218 c = data[i];
219 isLowerCase = (java.lang.Character.isLetter(c)
220 && java.lang.Character.isLowerCase(c));
221 while (isLowerCase
222 == (java.lang.Character.isLetter(c)
223 && java.lang.Character.isLowerCase(c))) {
224 if (isLowerCase) {
225 newdata[i] = java.lang.Character.toUpperCase(c);
226 } else {
227 newdata[i] = c;
228 }
229 i++;
230 if (i == end)
231 break;
232 c = data[i];
233 }
234 if (isLowerCase) {
235 fontStateToUse = smallCapsFontState;
236 } else {
237 fontStateToUse = fontState;
238 }
239 int index = addRealText(ba, fontStateToUse, red, green, blue,
240 wrapOption, ls, whiteSpaceCollapse,
241 newdata, caseStart, i, textState,
242 vAlign);
243 if (index != -1) {
244 return index;
245 }
246 }
247
248 return -1;
249 }
250
251 return addRealText(ba, fontState, red, green, blue, wrapOption, ls,
253 whiteSpaceCollapse, data, start, end, textState,
254 vAlign);
255 }
256
257 protected static int addRealText(BlockArea ba, FontState fontState,
258 float red, float green, float blue,
259 int wrapOption, LinkSet ls,
260 int whiteSpaceCollapse, char data[],
261 int start, int end, TextState textState,
262 int vAlign) {
263 LineArea la = ba.getCurrentLineArea();
264 if (la == null) {
265 return start;
266 }
267
268 la.changeFont(fontState);
269 la.changeColor(red, green, blue);
270 la.changeWrapOption(wrapOption);
271 la.changeWhiteSpaceCollapse(whiteSpaceCollapse);
272 la.changeVerticalAlign(vAlign);
273 ba.setupLinkSet(ls);
277
278 start = la.addText(data, start, end, ls, textState);
279
280 while ( start != -1) {
281 la = ba.createNextLineArea();
282 if (la == null) {
283 return start;
284 }
285 la.changeFont(fontState);
286 la.changeColor(red, green, blue);
287 la.changeWrapOption(wrapOption);
288 la.changeWhiteSpaceCollapse(whiteSpaceCollapse);
289 ba.setupLinkSet(ls);
293
294 start = la.addText(data, start, end, ls, textState);
295 }
296 return -1;
297 }
298
299
300 }
301 |
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