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1 package jimm.datavision.layout.pdf;
2 import jimm.datavision.*;
3 import jimm.datavision.field.*;
4 import jimm.datavision.layout.LayoutEngine;
5 import jimm.datavision.layout.LineDrawer;
6 import jimm.util.StringUtils;
7 import java.io.OutputStream  ;
8 import java.util.*;
9 import com.lowagie.text.*;
10 import com.lowagie.text.pdf.*;
11
12
17 public class PDFLE extends LayoutEngine implements LineDrawer {
18
19 protected OutputStream outStream;
20 protected Document doc;
21 protected PdfContentByte content;
22 protected HashMap baseFonts;
23 protected double prevThickness;
24
25
26 public PDFLE(OutputStream out) {
27 super(null);
28 outStream = out;
29 }
30
31
34 protected void doStart() {
35 baseFonts = new HashMap();
36
37 PaperFormat fmt = report.getPaperFormat();
38 doc = new Document(new com.lowagie.text.Rectangle(0, 0,
39 (int)fmt.getWidth(),
40 (int)fmt.getHeight()),
41 (float)fmt.getImageableX(),
42 (float)(fmt.getWidth() + fmt.getImageableX()),
43 (float)fmt.getImageableY(),
44 (float)(fmt.getHeight() + fmt.getImageableY()));
45
46 PdfWriter writer = null;
47 try {
48 writer = PdfWriter.getInstance(doc, outStream);
49 baseFonts.put("Helvetica", BaseFont.createFont("Helvetica",
50 BaseFont.CP1252,
51 BaseFont.NOT_EMBEDDED));
52 }
53 catch (DocumentException e) {
54 ErrorHandler.error(e);
55 wantsMoreData = false; return;
57 }
58 catch (java.io.IOException ioe) {
59 ErrorHandler.error(ioe);
60 wantsMoreData = false; return;
62 }
63
64 String str = null;
65 if ((str = report.getTitle()) != null)
66 doc.addTitle(str);
67 if ((str = report.getAuthor()) != null)
68 doc.addAuthor(str);
69 doc.addCreator("DataVision version " + info.Version
70 + " <" + info.URL + ">");
71 doc.addCreationDate();
72
73 doc.open();
74
75 content = writer.getDirectContent();
76 }
77
78 protected void doEnd() {
79 doc.close();
80 }
81
82 protected void doStartPage() {
83 try {
84 prevThickness = 0;
85 doc.newPage();
86 }
87 catch (DocumentException e) {
88 ErrorHandler.error(e);
89 wantsMoreData = false; }
91 }
92
93
98 protected void doOutputField(Field field) {
99 String fieldAsString = field.toString();
100 if (fieldAsString == null || fieldAsString.length() == 0) {
101 makeBorders(field);
102 return;
103 }
104
105 Format format = field.getFormat();
106 BaseFont baseFont = getFontForFormat(format);
107 float fontSize = (float)format.getSize();
108
109 jimm.datavision.Point bottomLeft =
110 bottomLeftOfField(field, format.getSize(), baseFont);
111
112 int align;
113 switch (format.getAlign()) {
114 case Format.ALIGN_CENTER:
115 align = PdfContentByte.ALIGN_CENTER;
116 bottomLeft.x += field.getBounds().width / 2; break;
118 case Format.ALIGN_RIGHT:
119 align = PdfContentByte.ALIGN_RIGHT;
120 bottomLeft.x += field.getBounds().width; break;
122 case Format.ALIGN_LEFT: default:
124 align = PdfContentByte.ALIGN_LEFT;
125 break;
126 }
127
128 content.beginText();
129 content.setFontAndSize(baseFont, fontSize);
130 content.setColorFill(format.getColor());
131
132 java.util.List lines = StringUtils.splitIntoLines(fieldAsString);
133 double lineHeight = field.getOutputHeight() / lines.size();
134 for (Iterator iter = lines.iterator(); iter.hasNext(); ) {
135 String line = (String )iter.next();
136 content.showTextAligned(align, line, (float)bottomLeft.x,
137 (float)bottomLeft.y, 0f);
138 bottomLeft.y -= lineHeight;
139 }
140
141 content.endText();
142
143 makeBorders(field);
145 }
146
147 protected jimm.datavision.Point bottomLeftOfField(Field f, double size,
148 BaseFont baseFont)
149 {
150 jimm.datavision.field.Rectangle r = f.getBounds();
151 jimm.datavision.Point bottomLeft = new jimm.datavision.Point(r.x, r.y);
152
153 translateToPDFCoords(bottomLeft);
156 bottomLeft.y -=
157 baseFont.getFontDescriptor(BaseFont.DESCENT, (float)size)
158 + r.height;
159
160 return bottomLeft;
161 }
162
163 protected void translateToPDFCoords(jimm.datavision.Point p) {
164 if (currentSection.getArea().getArea() != SectionArea.PAGE_FOOTER)
166 p.y = (pageHeight() - pageHeightUsed) - p.y;
167 else
168 p.y = currentSection.getOutputHeight() - p.y;
169 }
170
171 protected BaseFont getFontForFormat(Format f) {
172 String name = baseFontName(f.getFont());
173
174 BaseFont bf = (BaseFont)baseFonts.get(name);
175 if (bf == null) {
176 try {
177 bf = BaseFont.createFont(name, BaseFont.CP1252,
178 BaseFont.NOT_EMBEDDED);
179 baseFonts.put(name, bf);
180 }
181 catch (Exception e) { ErrorHandler.error(e);
183 bf = (BaseFont)baseFonts.get("Helvetica");
184 }
185 }
186 return bf;
187 }
188
189 protected String baseFontName(java.awt.Font font) {
190 String family = font.getFamily().toLowerCase();
191 if (family.startsWith("courier") || family.startsWith("monospace"))
192 return "Courier" + fontAttributes(font, "Bold", "Oblique");
193 else if (family.startsWith("helvetica") || family.startsWith("sansserif"))
194 return "Helvetica" + fontAttributes(font, "Bold", "Oblique");
195 else if (family.startsWith("symbol"))
196 return "Symbol";
197 else if (family.startsWith("zapfdingbats"))
198 return "ZapfDingbats";
199 else {
200 String fontAttrs = fontAttributes(font, "Bold", "Italic");
201 return "Times" + (fontAttrs.length() > 0 ? fontAttrs : "-Roman");
202 }
203 }
204
205 protected String fontAttributes(java.awt.Font font, String bold, String italic)
206 {
207 if (font.isBold() && font.isItalic())
208 return "-" + bold + italic;
209 else if (font.isBold())
210 return "-" + bold;
211 else if (font.isItalic())
212 return "-" + italic;
213 else
214 return "";
215 }
216
217
222 protected void doOutputImage(ImageField field) {
223 try {
224 Image img = Image.getInstance(field.getImageURL());
225
226 jimm.datavision.field.Rectangle r = field.getBounds();
228 jimm.datavision.Point p = new jimm.datavision.Point(r.x, r.y);
229 translateToPDFCoords(p);
230 p.y -= field.getOutputHeight();
231
232 img.setAbsolutePosition((float)p.x, (float)p.y);
233 content.addImage(img);
234 }
235 catch (Exception e) { wantsMoreData = false;
237 ErrorHandler.error(e);
238 }
239 }
240
241
246 protected void doOutputLine(Line line) {
247 drawLine(line, Boolean.TRUE);
248 }
249
250
253 protected void makeBorders(Field field) {
254 field.getBorderOrDefault().eachLine(this, Boolean.FALSE);
255 content.stroke();
256 }
257
258
263 public void drawLine(Line line, Object arg) {
264 if (line.getThickness() != prevThickness) {
265 prevThickness = line.getThickness();
266 content.setLineWidth((float)prevThickness);
267 }
268 jimm.datavision.Point p0 = new jimm.datavision.Point(line.getPoint(0));
269 jimm.datavision.Point p1 = new jimm.datavision.Point(line.getPoint(1));
270 translateToPDFCoords(p0);
271 translateToPDFCoords(p1);
272 content.moveTo((float)p0.x, (float)p0.y);
273 content.lineTo((float)p1.x, (float)p1.y);
274 if (arg != Boolean.FALSE) content.stroke();
276 }
277
278 }
279 |
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