|
1
12
13 package com.lowagie.text.pdf.codec.postscript;
14
15 import java.util.*;
16 import java.awt.*;
17 import java.awt.font.*;
18 import java.awt.geom.*;
19
20
21 public class PAPencil extends Object {
22
23 static protected class State extends Object implements Cloneable {
24 public Stroke stroke;
25 public Paint paint;
26 public AffineTransform at;
27 public Shape clipShape;
28 public Font font;
29 public Composite composite;
30 public GeneralPath path;
31
32 public State(){
33 this(null);
34 }
35
36 public State(Graphics2D g){
37 if(g == null){
38 this.stroke = new BasicStroke();
39 this.paint = Color.black;
40 this.at = new AffineTransform();
41 this.font = new Font("SansSerif", Font.PLAIN, 12);
42 this.composite = AlphaComposite.getInstance(AlphaComposite.DST_OVER, 1.0f);
43 this.clipShape = null;
44 } else {
45 this.recordState(g);
46 }
47 this.path = new GeneralPath();
48 }
49
50 public void recordState(Graphics2D g){
51 this.stroke = g.getStroke();
52 this.paint = g.getPaint();
53 this.at = g.getTransform();
54 this.font = g.getFont();
55 this.composite = g.getComposite();
56 this.clipShape = g.getClip();
57 }
58
59 public void stampState(Graphics2D g, Dimension size){
60 g.setTransform(new AffineTransform());
61 g.setClip(new Rectangle(0, 0, size.width, size.height));
62 g.setStroke(this.stroke);
63 g.setPaint(this.paint);
64 g.setTransform(this.at);
65 g.setFont(this.font);
66 g.setComposite(this.composite);
67 if(this.clipShape != null){
68 g.clip(this.clipShape);
69 }
70 }
71
72 public Object clone(){
73 try {
74 State n = (State)super.clone();
75
76 n.at = (AffineTransform) this.at.clone();
77 n.path = new GeneralPath();
78 n.path.append(this.path, false);
79 return n;
80 } catch(CloneNotSupportedException e){
81 throw new InternalError();
82 }
83 }
84
85 }
86
87
91
95
98 protected Dimension size;
99
100
103 protected State state;
104
105
108 protected Stack gStack;
109
110
113 protected HashMap fonts;
114
115
118 public Graphics2D graphics;
119
120
124 public PAPencil(Component component){
125 this.graphics = (Graphics2D) component.getGraphics();
126 this.size = component.getSize();
127 this.initgraphics();
128 }
129
130 public PAPencil(Graphics graphics, Dimension size){
131 this.graphics = (Graphics2D) graphics;
132 this.size = size;
133 this.initgraphics();
134 }
135
136
140 public void gsave(){
141 this.state.recordState(this.graphics);
142 State next = (State) this.state.clone();
143
144 this.gStack.push(this.state);
145 this.state = next;
146 }
147
148 public void grestore(){
149 if(this.gStack.empty()){
150 this.initgraphics();
151 } else {
152 this.state = (State) this.gStack.pop();
153 this.state.stampState(this.graphics, this.size);
154 }
155 }
156
157 public void grestoreall(){
158 this.initgraphics();
159 }
160
161 public void initgraphics(){
162
164 this.graphics.setRenderingHints(new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON));
166 this.graphics.setRenderingHints(new RenderingHints(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY));
167
168 this.graphics.translate(0, this.size.getHeight());
173 this.graphics.scale(1, -1);
174
175 this.state = new State(this.graphics);
177 this.gStack = new Stack();
178 this.erasepage();
179 }
180
181
185 public void newpath(){
186 this.state.path.reset();
187 }
188
189 public void moveto(double x, double y){
190 this.state.path.moveTo((float) x, (float) y);
191 }
192
193 public void moveto(Point2D p) {
194 this.moveto(p.getX(), p.getY());
195 }
196
197 public void rmoveto(double dx, double dy) throws PainterException {
198 Point2D currentPoint = this.state.path.getCurrentPoint();
199
200 if(currentPoint == null){
201 throw new PainterException("no current point");
202 }
203 this.state.path.moveTo((float) (currentPoint.getX() + dx) , (float) (currentPoint.getY() + dy));
204 }
205
206 public void lineto(double x, double y) throws PainterException {
207 Point2D currentPoint = this.state.path.getCurrentPoint();
208
209 if(currentPoint == null){
210 throw new PainterException("no current point");
211 }
212 this.state.path.lineTo((float) x, (float) y);
213 }
214
215 public void lineto(Point2D p) throws PainterException {
216 this.lineto(p.getX(), p.getY());
217 }
218
219 public void rlineto(double dx, double dy) throws PainterException {
220 Point2D currentPoint = this.state.path.getCurrentPoint();
221
222 if(currentPoint == null){
223 throw new PainterException("no current point");
224 }
225 this.state.path.lineTo((float) (currentPoint.getX() + dx) , (float) (currentPoint.getY() + dy));
226 }
227
228 public void arc(double cx, double cy, double r, double ang1, double ang2){
229 Arc2D.Float arc = new Arc2D.Float((float) cx, (float) cy, (float) r, (float) r,
230 (float) ang1, (float) (ang2 - ang1), Arc2D.OPEN);
231 Point2D currentPoint = this.state.path.getCurrentPoint();
232
233 if(currentPoint == null){
234 this.state.path.append(arc, false);
235 } else {
236 this.state.path.append(arc, true);
237 }
238 }
239
240 public void arcn(double cx, double cy, double r,
241 double ang1, double ang2) {
242 Arc2D.Float arc = new Arc2D.Float((float) cx, (float) cy, (float) r, (float) r,
243 (float) ang1, (float) (ang1 - ang2), Arc2D.OPEN);
244 Point2D currentPoint = this.state.path.getCurrentPoint();
245
246 if(currentPoint == null){
247 this.state.path.append(arc, false);
248 } else {
249 this.state.path.append(arc, true);
250 }
251 }
252
253 public void curveto(double x1, double y1, double x2, double y2,
254 double x3, double y3) throws PainterException {
255 Point2D currentPoint = this.state.path.getCurrentPoint();
256
257 if(currentPoint == null){
258 throw new PainterException("no current point");
259 }
260 this.state.path.curveTo((float) x1, (float) y1, (float) x2, (float) y2,
261 (float) x3, (float) y3);
262 }
263
264 public void rcurveto(double dx1, double dy1, double dx2, double dy2,
265 double dx3, double dy3) throws PainterException {
266 Point2D currentPoint = this.state.path.getCurrentPoint();
267
268 if(currentPoint == null){
269 throw new PainterException("no current point");
270 }
271 double x0 = currentPoint.getX();
272 double y0 = currentPoint.getY();
273 this.curveto(x0 + dx1, y0 + dy1, x0 + dx2, y0 + dy2, x0 + dx3,y0 + dy3);
274 }
275
276 public void closepath(){
277 this.state.path.closePath();
278 }
279
280 public void clippath(){
282 this.rectpath(0.0d, 0.0d, 800.0d, 800.0d);
283 }
284
285 public void erasepage(){
286 this.graphics.clearRect(0, 0, 800, 800);
287 }
288
289 public void charpath(String aString, boolean adjustForStroking){
290 GlyphVector glyphVector = this.state.font.createGlyphVector(this.graphics.getFontRenderContext(), aString);
291
292 Shape glyphShape = glyphVector.getOutline();
293 this.state.path.append(glyphShape, false);
294 }
295
296 public void showpage(){
297
298 }
299
300 public void show(String string) throws PainterException {
301 Point2D currentPoint = this.state.path.getCurrentPoint();
302 AffineTransform currentTransform = this.graphics.getTransform();
303 Point2D tranformedPoint = currentTransform.transform(currentPoint, null);
304
305
306 if(currentPoint == null){
307 throw new PainterException("no current point");
308 }
309 this.graphics.setTransform(new AffineTransform());
310 this.graphics.drawString(string, (float) tranformedPoint.getX(), (float) tranformedPoint.getY());
311 this.graphics.setTransform(currentTransform);
312 }
313
314 public void fill(){
315 this.graphics.fill(this.state.path);
316 this.newpath();
317 }
318
319 public void eofill(){
320 this.state.path.setWindingRule(GeneralPath.WIND_EVEN_ODD);
321 this.graphics.fill(this.state.path);
322 this.state.path.setWindingRule(GeneralPath.WIND_NON_ZERO);
323 this.newpath();
324 }
325
326 public void stroke(){
327 this.graphics.draw(this.state.path);
328 this.newpath();
329 }
330
331 public void rectfill(double x, double y, double width, double height){
332 this.gsave();
333 this.rectpath(x, y, width, height);
334 this.fill();
335 this.grestore();
336 }
337
338 public void rectfill(Rectangle2D rect){
339 this.rectfill(rect.getX(), rect.getY(), rect.getWidth(), rect.getHeight());
340 }
341
342 public void rectstroke(double x, double y, double width, double height){
343 this.gsave();
344 this.rectpath(x, y, width, height);
345 this.stroke();
346 this.grestore();
347 }
348
349 public void rectstroke(Rectangle2D rect){
350 this.rectstroke(rect.getX(), rect.getY(), rect.getWidth(), rect.getHeight());
351 }
352
353 public void rectpath(double x, double y, double width, double height){
354 this.newpath();
355 this.moveto(x, y);
356 try {
357 this.rlineto(width, 0);
358 this.rlineto(0, height);
359 this.rlineto(-width, 0);
360 } catch(PainterException e){
361 }
362 this.closepath();
363 }
364
365
367 public Font findFont(String fontname){
370 Font result;
371 StringBuffer buffer = new StringBuffer(fontname);
372 int i, n;
373 n = buffer.length();
374
375 for(i = 0; i < n; i++){
376 if(buffer.charAt(i) == '-'){
377 buffer.setCharAt(i,' ');
378 }
379 }
380
381 fontname = buffer.toString();
382
383 if(this.fonts == null){
384 GraphicsEnvironment genv = GraphicsEnvironment.getLocalGraphicsEnvironment();
386 Font[] fontArray = genv.getAllFonts();
387 this.fonts = new HashMap();
388 for(i = 0; i < fontArray.length; i++){
389 String postscriptName = fontArray[i].getPSName();
390 this.fonts.put(postscriptName, fontArray[i]);
391 }
392 }
393 result = (Font) this.fonts.get(fontname);
394 if(result == null){
395 result = new Font("SansSerif", Font.PLAIN, 12);
396 }
397 return result;
398 }
399 }
400
401 |
Popular Tags |
Java API By Example, From Geeks To Geeks.