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50
51 package com.lowagie.text.pdf.codec.wmf;
52
53 import java.awt.Color  ;
54 import java.awt.Point ;
55 import java.util.ArrayList ;
56 import java.util.Stack ;
57
58 import com.lowagie.text.pdf.PdfContentByte;
59
60 public class MetaState {
61
62 public static final int TA_NOUPDATECP = 0;
63 public static final int TA_UPDATECP = 1;
64 public static final int TA_LEFT = 0;
65 public static final int TA_RIGHT = 2;
66 public static final int TA_CENTER = 6;
67 public static final int TA_TOP = 0;
68 public static final int TA_BOTTOM = 8;
69 public static final int TA_BASELINE = 24;
70
71 public static final int TRANSPARENT = 1;
72 public static final int OPAQUE = 2;
73
74 public static final int ALTERNATE = 1;
75 public static final int WINDING = 2;
76
77 public Stack savedStates;
78 public ArrayList MetaObjects;
79 public Point currentPoint;
80 public MetaPen currentPen;
81 public MetaBrush currentBrush;
82 public MetaFont currentFont;
83 public Color currentBackgroundColor = Color.white;
84 public Color currentTextColor = Color.black;
85 public int backgroundMode = OPAQUE;
86 public int polyFillMode = ALTERNATE;
87 public int lineJoin = 1;
88 public int textAlign;
89 public int offsetWx;
90 public int offsetWy;
91 public int extentWx;
92 public int extentWy;
93 public float scalingX;
94 public float scalingY;
95
96
97
98 public MetaState() {
99 savedStates = new Stack ();
100 MetaObjects = new ArrayList ();
101 currentPoint = new Point (0, 0);
102 currentPen = new MetaPen();
103 currentBrush = new MetaBrush();
104 currentFont = new MetaFont();
105 }
106
107 public MetaState(MetaState state) {
108 setMetaState(state);
109 }
110
111 public void setMetaState(MetaState state) {
112 savedStates = state.savedStates;
113 MetaObjects = state.MetaObjects;
114 currentPoint = state.currentPoint;
115 currentPen = state.currentPen;
116 currentBrush = state.currentBrush;
117 currentFont = state.currentFont;
118 currentBackgroundColor = state.currentBackgroundColor;
119 currentTextColor = state.currentTextColor;
120 backgroundMode = state.backgroundMode;
121 polyFillMode = state.polyFillMode;
122 textAlign = state.textAlign;
123 lineJoin = state.lineJoin;
124 offsetWx = state.offsetWx;
125 offsetWy = state.offsetWy;
126 extentWx = state.extentWx;
127 extentWy = state.extentWy;
128 scalingX = state.scalingX;
129 scalingY = state.scalingY;
130 }
131
132 public void addMetaObject(MetaObject object) {
133 for (int k = 0; k < MetaObjects.size(); ++k) {
134 if (MetaObjects.get(k) == null) {
135 MetaObjects.set(k, object);
136 return;
137 }
138 }
139 MetaObjects.add(object);
140 }
141
142 public void selectMetaObject(int index, PdfContentByte cb) {
143 MetaObject obj = (MetaObject)MetaObjects.get(index);
144 if (obj == null)
145 return;
146 int style;
147 switch (obj.getType()) {
148 case MetaObject.META_BRUSH:
149 currentBrush = (MetaBrush)obj;
150 style = currentBrush.getStyle();
151 if (style == MetaBrush.BS_SOLID) {
152 Color color = currentBrush.getColor();
153 cb.setColorFill(color);
154 }
155 else if (style == MetaBrush.BS_HATCHED) {
156 Color color = currentBackgroundColor;
157 cb.setColorFill(color);
158 }
159 break;
160 case MetaObject.META_PEN:
161 {
162 currentPen = (MetaPen)obj;
163 style = currentPen.getStyle();
164 if (style != MetaPen.PS_NULL) {
165 Color color = currentPen.getColor();
166 cb.setColorStroke(color);
167 cb.setLineWidth(Math.abs((float)currentPen.getPenWidth() * scalingX / extentWx));
168 switch (style) {
169 case MetaPen.PS_DASH:
170 cb.setLineDash(18, 6, 0);
171 break;
172 case MetaPen.PS_DASHDOT:
173 cb.setLiteral("[9 6 3 6]0 d\n");
174 break;
175 case MetaPen.PS_DASHDOTDOT:
176 cb.setLiteral("[9 3 3 3 3 3]0 d\n");
177 break;
178 case MetaPen.PS_DOT:
179 cb.setLineDash(3, 0);
180 break;
181 default:
182 cb.setLineDash(0);
183 break;
184 }
185 }
186 break;
187 }
188 case MetaObject.META_FONT:
189 {
190 currentFont = (MetaFont)obj;
191 break;
192 }
193 }
194 }
195
196 public void deleteMetaObject(int index) {
197 MetaObjects.set(index, null);
198 }
199
200 public void saveState(PdfContentByte cb) {
201 cb.saveState();
202 MetaState state = new MetaState(this);
203 savedStates.push(state);
204 }
205
206 public void restoreState(int index, PdfContentByte cb) {
207 int pops;
208 if (index < 0)
209 pops = Math.min(-index, savedStates.size());
210 else
211 pops = Math.max(savedStates.size() - index, 0);
212 if (pops == 0)
213 return;
214 MetaState state = null;
215 while (pops-- != 0) {
216 cb.restoreState();
217 state = (MetaState)savedStates.pop();
218 }
219 setMetaState(state);
220 }
221
222 public void cleanup(PdfContentByte cb) {
223 int k = savedStates.size();
224 while (k-- > 0)
225 cb.restoreState();
226 }
227
228 public float transformX(int x) {
229 return ((float)x - offsetWx) * scalingX / extentWx;
230 }
231
232 public float transformY(int y) {
233 return (1f - ((float)y - offsetWy) / extentWy) * scalingY;
234 }
235
236 public void setScalingX(float scalingX) {
237 this.scalingX = scalingX;
238 }
239
240 public void setScalingY(float scalingY) {
241 this.scalingY = scalingY;
242 }
243
244 public void setOffsetWx(int offsetWx) {
245 this.offsetWx = offsetWx;
246 }
247
248 public void setOffsetWy(int offsetWy) {
249 this.offsetWy = offsetWy;
250 }
251
252 public void setExtentWx(int extentWx) {
253 this.extentWx = extentWx;
254 }
255
256 public void setExtentWy(int extentWy) {
257 this.extentWy = extentWy;
258 }
259
260 public float transformAngle(float angle) {
261 float ta = scalingY < 0 ? -angle : angle;
262 return (float)(scalingX < 0 ? Math.PI - ta : ta);
263 }
264
265 public void setCurrentPoint(Point p) {
266 currentPoint = p;
267 }
268
269 public Point getCurrentPoint() {
270 return currentPoint;
271 }
272
273 public MetaBrush getCurrentBrush() {
274 return currentBrush;
275 }
276
277 public MetaPen getCurrentPen() {
278 return currentPen;
279 }
280
281 public MetaFont getCurrentFont() {
282 return currentFont;
283 }
284
285
288 public Color getCurrentBackgroundColor() {
289 return currentBackgroundColor;
290 }
291
292
295 public void setCurrentBackgroundColor(Color currentBackgroundColor) {
296 this.currentBackgroundColor = currentBackgroundColor;
297 }
298
299
302 public Color getCurrentTextColor() {
303 return currentTextColor;
304 }
305
306
309 public void setCurrentTextColor(Color currentTextColor) {
310 this.currentTextColor = currentTextColor;
311 }
312
313
316 public int getBackgroundMode() {
317 return backgroundMode;
318 }
319
320
323 public void setBackgroundMode(int backgroundMode) {
324 this.backgroundMode = backgroundMode;
325 }
326
327
330 public int getTextAlign() {
331 return textAlign;
332 }
333
334
337 public void setTextAlign(int textAlign) {
338 this.textAlign = textAlign;
339 }
340
341
344 public int getPolyFillMode() {
345 return polyFillMode;
346 }
347
348
351 public void setPolyFillMode(int polyFillMode) {
352 this.polyFillMode = polyFillMode;
353 }
354
355 public void setLineJoinRectangle(PdfContentByte cb) {
356 if (lineJoin != 0) {
357 lineJoin = 0;
358 cb.setLineJoin(0);
359 }
360 }
361
362 public void setLineJoinPolygon(PdfContentByte cb) {
363 if (lineJoin == 0) {
364 lineJoin = 1;
365 cb.setLineJoin(1);
366 }
367 }
368
369 public boolean getLineNeutral() {
370 return (lineJoin == 0);
371 }
372
373 }
374 |
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