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51 package org.apache.fop.fo.flow;
52
53 import org.apache.fop.fo.*;
55 import org.apache.fop.fo.properties.*;
56 import org.apache.fop.layout.*;
57 import org.apache.fop.apps.FOPException;
58 import org.apache.fop.image.*;
59
60 import java.net.MalformedURLException  ;
62
63 public class ExternalGraphic extends FObj {
64
65 int breakAfter;
66 int breakBefore;
67 int align;
68 int startIndent;
69 int endIndent;
70 int spaceBefore;
71 int spaceAfter;
72 String src;
73 int height;
74 int width;
75 String id;
76
77 ImageArea imageArea;
78
79 public static class Maker extends FObj.Maker {
80 public FObj make(FObj parent, PropertyList propertyList,
81 String systemId, int line, int column)
82 throws FOPException {
83 return new ExternalGraphic(parent, propertyList,
84 systemId, line, column);
85 }
86 }
87
88 public static FObj.Maker maker() {
89 return new ExternalGraphic.Maker();
90 }
91
92 public ExternalGraphic(FObj parent, PropertyList propertyList,
93 String systemId, int line, int column) {
94 super(parent, propertyList, systemId, line, column);
95 }
96
97 public String getName() {
98 return "fo:external-graphic";
99 }
100
101 public int layout(Area area) throws FOPException {
102
103 if (this.marker == START) {
104
105 AccessibilityProps mAccProps = propMgr.getAccessibilityProps();
107
108 AuralProps mAurProps = propMgr.getAuralProps();
110
111 BorderAndPadding bap = propMgr.getBorderAndPadding();
113 BackgroundProps bProps = propMgr.getBackgroundProps();
114
115 MarginInlineProps mProps = propMgr.getMarginInlineProps();
117
118 RelativePositionProps mRelProps = propMgr.getRelativePositionProps();
120
121
144 this.align = this.properties.get("text-align").getEnum();
146
147 this.startIndent =
148 this.properties.get("start-indent").getLength().mvalue();
149 this.endIndent =
150 this.properties.get("end-indent").getLength().mvalue();
151
152 this.spaceBefore =
153 this.properties.get("space-before.optimum").getLength().mvalue();
154 this.spaceAfter =
155 this.properties.get("space-after.optimum").getLength().mvalue();
156
157 this.src = this.properties.get("src").getString();
158
159 this.width = this.properties.get("width").getLength().mvalue();
160
161 this.height = this.properties.get("height").getLength().mvalue();
162
163 this.id = this.properties.get("id").getString();
164
165 try {
166 area.getIDReferences().createID(id);
167 }
168 catch(FOPException e) {
169 if (!e.isLocationSet()) {
170 e.setLocation(systemId, line, column);
171 }
172 throw e;
173 }
174
184 this.marker = 0;
185 }
186
187 try {
188 FopImage img = FopImageFactory.Make(src);
189 if ((width == 0) || (height == 0)) {
191 double imgWidth = img.getWidth();
193 double imgHeight = img.getHeight();
194 if ((width == 0) && (height == 0)) {
195 width = (int)((imgWidth * 1000d));
196 height = (int)((imgHeight * 1000d));
197 } else if (height == 0) {
198 height = (int)((imgHeight * ((double)width)) / imgWidth);
199 } else if (width == 0) {
200 width = (int)((imgWidth * ((double)height)) / imgHeight);
201 }
202 }
203
204 double ratio = ((double)width) / ((double)height);
207 int areaWidth = area.getAllocationWidth() - startIndent
208 - endIndent;
209 int pageHeight = area.getPage().getBody().getMaxHeight()
210 - spaceBefore;
211 if (height > pageHeight) {
212 height = pageHeight;
213 width = (int)(ratio * ((double)height));
214 }
215 if (width > areaWidth) {
216 width = areaWidth;
217 height = (int)(((double)width) / ratio);
218 }
219
220 if (area.spaceLeft() < (height + spaceBefore)) {
221 return Status.AREA_FULL_NONE;
222 }
223
224 this.imageArea =
225 new ImageArea(propMgr.getFontState(area.getFontInfo()), img,
226 area.getAllocationWidth(), width, height,
227 startIndent, endIndent, align);
228
229 if ((spaceBefore != 0) && (this.marker == 0)) {
230 area.addDisplaySpace(spaceBefore);
231 }
232
233 if (marker == 0) {
234 area.getIDReferences().configureID(id, area);
236 }
237
238 imageArea.start();
239 imageArea.end();
240
243 if (spaceAfter != 0) {
244 area.addDisplaySpace(spaceAfter);
245 }
246 if (breakBefore == BreakBefore.PAGE
247 || ((spaceBefore + imageArea.getHeight())
248 > area.spaceLeft())) {
249 return Status.FORCE_PAGE_BREAK;
250 }
251
252 if (breakBefore == BreakBefore.ODD_PAGE) {
253 return Status.FORCE_PAGE_BREAK_ODD;
254 }
255
256 if (breakBefore == BreakBefore.EVEN_PAGE) {
257 return Status.FORCE_PAGE_BREAK_EVEN;
258 }
259
260
261 if (area instanceof BlockArea) {
262 BlockArea ba = (BlockArea)area;
263 LineArea la = ba.getCurrentLineArea();
264 if (la == null) {
265 return Status.AREA_FULL_NONE;
266 }
267 la.addPending();
268 if (imageArea.getContentWidth() > la.getRemainingWidth()) {
269 la = ba.createNextLineArea();
270 if (la == null) {
271 return Status.AREA_FULL_NONE;
272 }
273 }
274 la.addInlineArea(imageArea, this.getLinkSet());
275 } else {
276 area.addChild(imageArea);
277 area.increaseHeight(imageArea.getContentHeight());
278 }
279 imageArea.setPage(area.getPage());
280
281 if (breakAfter == BreakAfter.PAGE) {
282 this.marker = BREAK_AFTER;
283 return Status.FORCE_PAGE_BREAK;
284 }
285
286 if (breakAfter == BreakAfter.ODD_PAGE) {
287 this.marker = BREAK_AFTER;
288 return Status.FORCE_PAGE_BREAK_ODD;
289 }
290
291 if (breakAfter == BreakAfter.EVEN_PAGE) {
292 this.marker = BREAK_AFTER;
293 return Status.FORCE_PAGE_BREAK_EVEN;
294 }
295
296 } catch (MalformedURLException urlex) {
297 log.error("Error while creating area : "
299 + urlex.getMessage());
300 } catch (FopImageException imgex) {
301 log.error("Error while creating area : "
303 + imgex.getMessage());
304 }
305
306
310 return Status.OK;
311 }
312
313 }
314
315 |
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