source: trunk/gcc/libjava/gnu/awt/j2d/IntegerGraphicsState.java

Last change on this file was 1392, checked in by bird, 21 years ago

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1/* Copyright (C) 2000, 2003 Free Software Foundation
2
3 This file is part of libgcj.
4
5This software is copyrighted work licensed under the terms of the
6Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
7details. */
8
9package gnu.awt.j2d;
10
11import java.awt.Color;
12import java.awt.Image;
13import java.awt.Shape;
14import java.awt.Rectangle;
15import java.awt.Graphics;
16import java.awt.Graphics2D;
17import java.awt.GraphicsConfiguration;
18import java.awt.Font;
19import java.awt.FontMetrics;
20import java.awt.image.BufferedImage;
21import java.awt.image.ImageObserver;
22import java.awt.image.Raster;
23import java.awt.image.WritableRaster;
24import java.awt.image.ColorModel;
25
26/**
27 * IntegerGraphicsState is one of several graphics state
28 * implementations. This graphics state is used when the graphics
29 * object has simple properties, (coordinate translation only, no
30 * transform) and the backend supports integer coordinates (pixel
31 * based). For primitive paint operations, this object translates the
32 * coordinates and forwards the request to the backend. For requests
33 * to draw arbitrary shapes and paths, this object translates the
34 * requests to primitive drawing operations supported by the
35 * backend. IntegerGraphicsState is meant to support the most common
36 * state of an graphics object. The degree of functionality is roughly
37 * equivalent with the old java.awt.Graphics API.
38 */
39public class IntegerGraphicsState extends AbstractGraphicsState
40{
41 int tx;
42 int ty;
43
44 DirectRasterGraphics directGfx;
45 Shape clip;
46
47 public IntegerGraphicsState(DirectRasterGraphics directGfx)
48 {
49 this.directGfx = directGfx;
50 }
51
52 public Object clone()
53 {
54 IntegerGraphicsState clone = (IntegerGraphicsState) super.clone();
55 clone.directGfx = (DirectRasterGraphics) directGfx.clone();
56
57 return clone;
58 }
59
60 public void dispose()
61 {
62 DirectRasterGraphics lDeviceGfx = directGfx;
63
64 directGfx = null;
65
66 if (lDeviceGfx != null)
67 lDeviceGfx.dispose();
68
69 super.dispose();
70 }
71
72 // -------- Graphics methods:
73
74 public void setColor(Color color)
75 {
76 directGfx.setColor(color);
77 }
78
79 public void setPaintMode()
80 {
81 directGfx.setPaintMode();
82 }
83
84 public void setXORMode(Color altColor)
85 {
86 directGfx.setXORMode(altColor);
87 }
88
89 public void setFont(Font font)
90 {
91 directGfx.setFont(font);
92 }
93
94 public FontMetrics getFontMetrics(Font font)
95 {
96 return directGfx.getFontMetrics(font);
97 }
98
99 public void setClip(Shape clip)
100 {
101 if (clip instanceof Rectangle)
102 {
103 Rectangle clipRect = (Rectangle) ((Rectangle) clip).clone();
104 clipRect.x += tx;
105 clipRect.y += ty;
106
107 this.clip = clipRect;
108
109 directGfx.setClip(clipRect);
110 return;
111 }
112
113 String msg =
114 "translating clip shape " + clip + " into device " +
115 "coordinate space has not been implemented yet";
116
117 throw new UnsupportedOperationException(msg);
118 }
119
120 public Shape getClip()
121 {
122 if (clip instanceof Rectangle)
123 {
124 Rectangle clipRect = (Rectangle) clip;
125 clipRect.x -= tx;
126 clipRect.y -= ty;
127 return clipRect;
128 }
129
130 String msg =
131 "translating clip shape " + clip + " into user " +
132 "coordinate space has not been implemented yet";
133
134 throw new UnsupportedOperationException(msg);
135 }
136
137 public Rectangle getClipBounds()
138 {
139 Rectangle clipRect = clip.getBounds();
140
141 clipRect.x -= tx;
142 clipRect.y -= ty;
143 return clipRect;
144 }
145
146 public void copyArea(int x, int y,
147 int width, int height,
148 int dx, int dy)
149 {
150 directGfx.copyArea(x+tx, y+ty, width, height, dx, dy);
151 }
152
153 public void drawLine(int x1, int y1,
154 int x2, int y2)
155 {
156 directGfx.drawLine(x1+tx, y1+ty, x2+tx, y2+ty);
157 }
158
159 public void fillRect(int x, int y,
160 int width, int height)
161 {
162 directGfx.fillRect(x+tx, y+ty, width, height);
163 }
164
165 public void clearRect(int x, int y,
166 int width, int height)
167 {
168 directGfx.setColor(frontend.getBackground());
169 directGfx.fillRect(x+tx, y+ty, width, height);
170 directGfx.setColor(frontend.getColor());
171 }
172
173 public void drawRoundRect(int x, int y,
174 int width, int height,
175 int arcWidth, int arcHeight)
176 {
177 throw new UnsupportedOperationException("not implemented yet");
178 }
179
180 public void fillRoundRect(int x, int y,
181 int width, int height,
182 int arcWidth, int arcHeight)
183 {
184 throw new UnsupportedOperationException("not implemented yet");
185 }
186
187 public void drawOval(int x, int y,
188 int width, int height)
189 {
190 throw new UnsupportedOperationException("not implemented yet");
191 }
192
193 public void fillOval(int x, int y,
194 int width, int height)
195 {
196 throw new UnsupportedOperationException("not implemented yet");
197 }
198
199 public void drawArc(int x, int y,
200 int width, int height,
201 int startAngle, int arcAngle)
202 {
203 directGfx.drawArc(x+tx, y+ty, width, height, startAngle, arcAngle);
204 }
205
206 public void fillArc(int x, int y,
207 int width, int height,
208 int startAngle, int arcAngle)
209 {
210 directGfx.fillArc(x+tx, y+ty, width, height, startAngle, arcAngle);
211 }
212
213 public void drawPolyline(int[] xPoints, int[] yPoints, int nPoints)
214 {
215 if ((tx == 0) && (ty == 0))
216 {
217 directGfx.drawPolyline(xPoints, yPoints, nPoints);
218 return;
219 }
220
221 throw new UnsupportedOperationException("translate not implemented");
222 }
223
224 public void drawPolygon(int[] xPoints, int[] yPoints, int nPoints)
225 {
226 if ((tx == 0) && (ty == 0))
227 {
228 directGfx.drawPolygon(xPoints, yPoints, nPoints);
229 return;
230 }
231
232 throw new UnsupportedOperationException("translate not implemented");
233 }
234
235 public void fillPolygon (int[] xPoints, int[] yPoints, int nPoints)
236 {
237 // FIXME: remove tx & ty args once translation via AffineTransform
238 // is implemented.
239 directGfx.fillPolygon (xPoints, yPoints, nPoints, tx, ty);
240 }
241
242 public boolean drawImage(Image image, int x, int y,
243 ImageObserver observer)
244 {
245 x += tx;
246 y += ty;
247
248 if (image instanceof BufferedImage)
249 {
250 BufferedImage bImage = (BufferedImage) image;
251 Object config =
252 bImage.getProperty("java.awt.GraphicsConfiguration");
253
254 if (config == frontend.config)
255 return directGfx.drawImage(image, x, y, observer);
256
257 int width = image.getWidth(null);
258 int height = image.getHeight(null);
259
260 Rectangle bounds = new Rectangle(x, y, width, height);
261
262 MappedRaster mr = directGfx.mapRaster(bounds);
263
264 // manipulate raster here...
265 ColorModel colorModel = mr.getColorModel();
266 WritableRaster raster = mr.getRaster();
267
268 int xEnd = x + width;
269 int yEnd = y + height;
270
271 // FIXME: Use the following code only as a fallback. It's SLOW!
272
273 Object rgbElem = null;
274 for (int yy=0; yy<height; yy++)
275 {
276 for (int xx=0; xx<width; xx++)
277 {
278 int srgb = bImage.getRGB(xx, yy);
279 int sa = ((srgb >>> 24) & 0xff) + 1;
280 int sr = ((srgb >>> 16) & 0xff) + 1;
281 int sg = ((srgb >>> 8) & 0xff) + 1;
282 int sb = (srgb & 0xff) + 1;
283
284 rgbElem = raster.getDataElements(xx+x, yy+y, rgbElem);
285 int drgb = colorModel.getRGB(rgbElem);
286 int dr = ((drgb >>> 16) & 0xff) + 1;
287 int dg = ((drgb >>> 8) & 0xff) + 1;
288 int db = (drgb & 0xff) + 1;
289 int da = 256 - sa;
290
291 dr = ((sr*sa + dr*da) >>> 8) - 1;
292 dg = ((sg*sa + dg*da) >>> 8) - 1;
293 db = ((sb*sa + db*da) >>> 8) - 1;
294
295 drgb = (dr<<16) | (dg<<8) | db;
296
297 rgbElem = colorModel.getDataElements(drgb, rgbElem);
298
299 raster.setDataElements(xx+x, yy+y, rgbElem);
300 }
301 }
302 directGfx.unmapRaster(mr);
303 return true;
304
305 }
306 throw new UnsupportedOperationException("drawing image " + image +
307 "not implemented");
308 }
309
310
311 // -------- Graphics2D methods:
312
313 public void draw(Shape shape)
314 {
315 if (shape instanceof Rectangle)
316 {
317 Rectangle rect = (Rectangle) shape;
318 directGfx.drawRect(rect.x+tx, rect.y+ty, rect.width, rect.height);
319 return;
320 }
321
322 throw new UnsupportedOperationException("shape not implemented");
323 }
324
325 public void fill(Shape shape)
326 {
327 if (shape instanceof Rectangle)
328 {
329 Rectangle rect = (Rectangle) shape;
330 directGfx.fillRect(rect.x+tx, rect.y+ty, rect.width, rect.height);
331 return;
332 }
333
334 throw new UnsupportedOperationException("not implemented");
335 }
336
337 public boolean hit(Rectangle rect, Shape text,
338 boolean onStroke)
339 {
340 throw new UnsupportedOperationException("not implemented");
341 }
342
343 public void drawString(String text, int x, int y)
344 {
345 directGfx.drawString(text, x+tx, y+ty);
346 }
347
348 public void drawString(String text, float x, float y)
349 {
350 drawString(text, (int) x, (int) y);
351 }
352
353 public void translate(int x, int y)
354 {
355 tx += x;
356 ty += y;
357 }
358
359 public void translate(double tx, double ty)
360 {
361 if ((tx == 0) && (ty == 0))
362 return;
363
364 needAffineTransform();
365 }
366
367 public void rotate(double theta)
368 {
369 if (theta == 0)
370 return;
371
372 needAffineTransform();
373 }
374
375 public void rotate(double theta, double x, double y)
376 {
377 if (theta == 0)
378 return;
379
380 needAffineTransform();
381 }
382
383 public void scale(double scaleX, double scaleY)
384 {
385 if ((scaleX == 1) && (scaleY == 1))
386 return;
387
388 needAffineTransform();
389 }
390
391 public void shear(double shearX, double shearY)
392 {
393 if ((shearX == 0) && (shearY == 0))
394 return;
395
396 needAffineTransform();
397 }
398
399 private void needAffineTransform()
400 {
401 throw new UnsupportedOperationException("state with affine " +
402 "transform not implemented");
403 }
404}
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