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1
7 package java.awt;
8
9 import java.io.*;
10 import java.lang.*;
11 import java.util.*;
12 import java.awt.image.ImageObserver  ;
13 import java.text.AttributedCharacterIterator ;
14
15
87 public abstract class Graphics {
88
89
101 protected Graphics() {
102 }
103
104
110 public abstract Graphics create();
111
112
146 public Graphics create(int x, int y, int width, int height) {
147 Graphics g = create();
148 if (g == null) return null;
149 g.translate(x, y);
150 g.clipRect(0, 0, width, height);
151 return g;
152 }
153
154
165 public abstract void translate(int x, int y);
166
167
173 public abstract Color getColor();
174
175
183 public abstract void setColor(Color c);
184
185
192 public abstract void setPaintMode();
193
194
209 public abstract void setXORMode(Color c1);
210
211
217 public abstract Font getFont();
218
219
229 public abstract void setFont(Font font);
230
231
239 public FontMetrics getFontMetrics() {
240 return getFontMetrics(getFont());
241 }
242
243
251 public abstract FontMetrics getFontMetrics(Font f);
252
253
254
271 public abstract Rectangle getClipBounds();
272
273
292 public abstract void clipRect(int x, int y, int width, int height);
293
294
309 public abstract void setClip(int x, int y, int width, int height);
310
311
327 public abstract Shape getClip();
328
329
345 public abstract void setClip(Shape clip);
346
347
366 public abstract void copyArea(int x, int y, int width, int height,
367 int dx, int dy);
368
369
378 public abstract void drawLine(int x1, int y1, int x2, int y2);
379
380
399 public abstract void fillRect(int x, int y, int width, int height);
400
401
417 public void drawRect(int x, int y, int width, int height) {
418 if ((width < 0) || (height < 0)) {
419 return;
420 }
421
422 if (height == 0 || width == 0) {
423 drawLine(x, y, x + width, y + height);
424 } else {
425 drawLine(x, y, x + width - 1, y);
426 drawLine(x + width, y, x + width, y + height - 1);
427 drawLine(x + width, y + height, x + 1, y + height);
428 drawLine(x, y + height, x, y + 1);
429 }
430 }
431
432
451 public abstract void clearRect(int x, int y, int width, int height);
452
453
469 public abstract void drawRoundRect(int x, int y, int width, int height,
470 int arcWidth, int arcHeight);
471
472
488 public abstract void fillRoundRect(int x, int y, int width, int height,
489 int arcWidth, int arcHeight);
490
491
510 public void draw3DRect(int x, int y, int width, int height,
511 boolean raised) {
512 Color c = getColor();
513 Color brighter = c.brighter();
514 Color darker = c.darker();
515
516 setColor(raised ? brighter : darker);
517 drawLine(x, y, x, y + height);
518 drawLine(x + 1, y, x + width - 1, y);
519 setColor(raised ? darker : brighter);
520 drawLine(x + 1, y + height, x + width, y + height);
521 drawLine(x + width, y, x + width, y + height - 1);
522 setColor(c);
523 }
524
525
540 public void fill3DRect(int x, int y, int width, int height,
541 boolean raised) {
542 Color c = getColor();
543 Color brighter = c.brighter();
544 Color darker = c.darker();
545
546 if (!raised) {
547 setColor(darker);
548 }
549 fillRect(x+1, y+1, width-2, height-2);
550 setColor(raised ? brighter : darker);
551 drawLine(x, y, x, y + height - 1);
552 drawLine(x + 1, y, x + width - 2, y);
553 setColor(raised ? darker : brighter);
554 drawLine(x + 1, y + height - 1, x + width - 1, y + height - 1);
555 drawLine(x + width - 1, y, x + width - 1, y + height - 2);
556 setColor(c);
557 }
558
559
576 public abstract void drawOval(int x, int y, int width, int height);
577
578
589 public abstract void fillOval(int x, int y, int width, int height);
590
591
628 public abstract void drawArc(int x, int y, int width, int height,
629 int startAngle, int arcAngle);
630
631
667 public abstract void fillArc(int x, int y, int width, int height,
668 int startAngle, int arcAngle);
669
670
682 public abstract void drawPolyline(int xPoints[], int yPoints[],
683 int nPoints);
684
685
704 public abstract void drawPolygon(int xPoints[], int yPoints[],
705 int nPoints);
706
707
714 public void drawPolygon(Polygon p) {
715 drawPolygon(p.xpoints, p.ypoints, p.npoints);
716 }
717
718
738 public abstract void fillPolygon(int xPoints[], int yPoints[],
739 int nPoints);
740
741
750 public void fillPolygon(Polygon p) {
751 fillPolygon(p.xpoints, p.ypoints, p.npoints);
752 }
753
754
765 public abstract void drawString(String str, int x, int y);
766
767
779 public abstract void drawString(AttributedCharacterIterator iterator,
780 int x, int y);
781
782
795 public void drawChars(char data[], int offset, int length, int x, int y) {
796 drawString(new String (data, offset, length), x, y);
797 }
798
799
812 public void drawBytes(byte data[], int offset, int length, int x, int y) {
813 drawString(new String (data, 0, offset, length), x, y);
814 }
815
816
848 public abstract boolean drawImage(Image img, int x, int y,
849 ImageObserver observer);
850
851
887 public abstract boolean drawImage(Image img, int x, int y,
888 int width, int height,
889 ImageObserver observer);
890
891
929 public abstract boolean drawImage(Image img, int x, int y,
930 Color bgcolor,
931 ImageObserver observer);
932
933
974 public abstract boolean drawImage(Image img, int x, int y,
975 int width, int height,
976 Color bgcolor,
977 ImageObserver observer);
978
979
1029 public abstract boolean drawImage(Image img,
1030 int dx1, int dy1, int dx2, int dy2,
1031 int sx1, int sy1, int sx2, int sy2,
1032 ImageObserver observer);
1033
1034
1090 public abstract boolean drawImage(Image img,
1091 int dx1, int dy1, int dx2, int dy2,
1092 int sx1, int sy1, int sx2, int sy2,
1093 Color bgcolor,
1094 ImageObserver observer);
1095
1096
1123 public abstract void dispose();
1124
1125
1129 public void finalize() {
1130 dispose();
1131 }
1132
1133
1138 public String toString() {
1139 return getClass().getName() + "[font=" + getFont() + ",color=" + getColor() + "]";
1140 }
1141
1142
1149 @Deprecated
1150 public Rectangle getClipRect() {
1151 return getClipBounds();
1152 }
1153
1154
1180 public boolean hitClip(int x, int y, int width, int height) {
1181 Rectangle clipRect = getClipBounds();
1185 if (clipRect == null) {
1186 return true;
1187 }
1188 return clipRect.intersects(x, y, width, height);
1189 }
1190
1191
1207 public Rectangle getClipBounds(Rectangle r) {
1208 Rectangle clipRect = getClipBounds();
1212 if (clipRect != null) {
1213 r.x = clipRect.x;
1214 r.y = clipRect.y;
1215 r.width = clipRect.width;
1216 r.height = clipRect.height;
1217 } else if (r == null) {
1218 throw new NullPointerException ("null rectangle parameter");
1219 }
1220 return r;
1221 }
1222}
1223 |
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