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27
28 package swingwt.awt;
29
30
31 public abstract class Graphics {
32
33 protected Graphics() {
34 }
35
36 public abstract Graphics create();
37 public Graphics create(int x, int y, int width, int height) {
38 Graphics g = create();
39 if (g == null) return null;
40 g.translate(x, y);
41 g.clipRect(0, 0, width, height);
42 return g;
43 }
44 public abstract void translate(int x, int y);
45 public abstract Color getColor();
46 public abstract void setColor(Color c);
47 public abstract void setPaintMode();
48 public abstract void setXORMode(Color c1);
49 public abstract Font getFont();
50 public abstract void setFont(Font font);
51 public FontMetrics getFontMetrics() {
52 return getFontMetrics(getFont());
53 }
54 public abstract FontMetrics getFontMetrics(Font f);
55 public abstract Rectangle getClipBounds();
56 public abstract void clipRect(int x, int y, int width, int height);
57 public abstract void setClip(int x, int y, int width, int height);
58 public abstract Shape getClip();
59 public abstract void setClip(Shape clip);
60 public abstract void copyArea(int x, int y, int width, int height,
61 int dx, int dy);
62 public abstract void drawLine(int x1, int y1, int x2, int y2);
63
64 public void drawRect(int x, int y, int width, int height) {
65 if ((width < 0) || (height < 0)) {
66 return;
67 }
68 if (height == 0 || width == 0) {
69 drawLine(x, y, x + width, y + height);
70 } else {
71 drawLine(x, y, x + width - 1, y);
72 drawLine(x + width, y, x + width, y + height - 1);
73 drawLine(x + width, y + height, x + 1, y + height);
74 drawLine(x, y + height, x, y + 1);
75 }
76 }
77 public abstract void clearRect(int x, int y, int width, int height);
78 public abstract void drawRoundRect(int x, int y, int width, int height,
79 int arcWidth, int arcHeight);
80 public abstract void fillRect(int x, int y, int width, int height);
81 public abstract void fillRoundRect(int x, int y, int width, int height,
82 int arcWidth, int arcHeight);
83 public void draw3DRect(int x, int y, int width, int height,
84 boolean raised) {
85 Color c = getColor();
86 Color brighter = c.brighter();
87 Color darker = c.darker();
88
89 setColor(raised ? brighter : darker);
90 drawLine(x, y, x, y + height);
91 drawLine(x + 1, y, x + width - 1, y);
92 setColor(raised ? darker : brighter);
93 drawLine(x + 1, y + height, x + width, y + height);
94 drawLine(x + width, y, x + width, y + height - 1);
95 setColor(c);
96 }
97 public void fill3DRect(int x, int y, int width, int height,
98 boolean raised) {
99 Color c = getColor();
100 Color brighter = c.brighter();
101 Color darker = c.darker();
102
103 if (!raised) {
104 setColor(darker);
105 }
106 fillRect(x+1, y+1, width-2, height-2);
107 setColor(raised ? brighter : darker);
108 drawLine(x, y, x, y + height - 1);
109 drawLine(x + 1, y, x + width - 2, y);
110 setColor(raised ? darker : brighter);
111 drawLine(x + 1, y + height - 1, x + width - 1, y + height - 1);
112 drawLine(x + width - 1, y, x + width - 1, y + height - 2);
113 setColor(c);
114 }
115
116 public abstract void drawOval(int x, int y, int width, int height);
117 public abstract void fillOval(int x, int y, int width, int height);
118 public abstract void drawArc(int x, int y, int width, int height,
119 int startAngle, int arcAngle);
120 public abstract void fillArc(int x, int y, int width, int height,
121 int startAngle, int arcAngle);
122 public abstract void drawPolyline(int xPoints[], int yPoints[],
123 int nPoints);
124 public abstract void drawPolygon(int xPoints[], int yPoints[],
125 int nPoints);
126 public void drawPolygon(Polygon p) {
127 drawPolygon(p.xpoints, p.ypoints, p.npoints);
128 }
129 public abstract void fillPolygon(int xPoints[], int yPoints[],
130 int nPoints);
131 public void fillPolygon(Polygon p) {
132 fillPolygon(p.xpoints, p.ypoints, p.npoints);
133 }
134 public abstract void drawString(String  str, int x, int y);
135 public void drawChars(char data[], int offset, int length, int x, int y) {
136 drawString(new String (data, offset, length), x, y);
137 }
138 public void drawBytes(byte data[], int offset, int length, int x, int y) {
139 drawString(new String (data).substring(offset, offset+length), x, y);
140 }
141 public abstract boolean drawImage(Image img, int x, int y,
142 ImageObserver observer);
143 public abstract boolean drawImage(Image img, int x, int y,
144 int width, int height,
145 ImageObserver observer);
146 public abstract boolean drawImage(Image img, int x, int y,
147 Color bgcolor,
148 ImageObserver observer);
149 public abstract boolean drawImage(Image img, int x, int y,
150 int width, int height,
151 Color bgcolor,
152 ImageObserver observer);
153 public abstract boolean drawImage(Image img,
154 int dx1, int dy1, int dx2, int dy2,
155 int sx1, int sy1, int sx2, int sy2,
156 ImageObserver observer);
157
158 public abstract boolean drawImage(Image img,
159 int dx1, int dy1, int dx2, int dy2,
160 int sx1, int sy1, int sx2, int sy2,
161 Color bgcolor,
162 ImageObserver observer);
163 public abstract void dispose();
164 public String toString() {
165 return getClass().getName() + "[font=" + getFont() + ",color=" + getColor() + "]";
166 }
167 public Rectangle getClipRect() {
168 return getClipBounds();
169 }
170 public boolean hitClip(int x, int y, int width, int height) {
171 Rectangle clipRect = getClipBounds();
172 if (clipRect == null) {
173 return true;
174 }
175 return clipRect.intersects(x, y, width, height);
176 }
177 public Rectangle getClipBounds(Rectangle r) {
178 Rectangle clipRect = getClipBounds();
179 if (clipRect != null) {
180 r.x = clipRect.x;
181 r.y = clipRect.y;
182 r.width = clipRect.width;
183 r.height = clipRect.height;
184 } else if (r == null) {
185 throw new NullPointerException ("null rectangle parameter");
186 }
187 return r;
188 }
189
190 public abstract void redrawUnder(int x, int y, int width, int height);
191 }
192 |
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