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19 package jcckit.renderer;
20
21 import java.awt.BasicStroke  ;
22 import java.awt.Color ;
23 import java.awt.Graphics2D ;
24 import java.awt.Shape ;
25 import java.awt.font.TextLayout ;
26 import java.awt.geom.AffineTransform ;
27 import java.awt.geom.Ellipse2D ;
28 import java.awt.geom.GeneralPath ;
29 import java.awt.geom.Rectangle2D ;
30
31 import jcckit.graphic.BasicGraphicalElement;
32 import jcckit.graphic.ClippingRectangle;
33 import jcckit.graphic.ClippingShape;
34 import jcckit.graphic.FillAttributes;
35 import jcckit.graphic.FontStyle;
36 import jcckit.graphic.GraphPoint;
37 import jcckit.graphic.GraphicAttributes;
38 import jcckit.graphic.GraphicalComposite;
39 import jcckit.graphic.GraphicalCompositeRenderer;
40 import jcckit.graphic.LineAttributes;
41 import jcckit.graphic.Oval;
42 import jcckit.graphic.OvalRenderer;
43 import jcckit.graphic.Polygon;
44 import jcckit.graphic.PolygonRenderer;
45 import jcckit.graphic.Rectangle;
46 import jcckit.graphic.RectangleRenderer;
47 import jcckit.graphic.Text;
48 import jcckit.graphic.TextAttributes;
49 import jcckit.graphic.TextRenderer;
50
51
63 public class Graphics2DRenderer implements GraphicalCompositeRenderer,
64 PolygonRenderer, OvalRenderer,
65 TextRenderer, RectangleRenderer {
66 private static final int FS = 1;
67 private static final String DEFAULT_FONT_NAME = "SansSerif";
68 private static final FontStyle DEFAULT_FONT_STYLE = FontStyle.NORMAL;
69 private static final int DEFAULT_FONT_SIZE = 12;
70
71 private Color _defaultColor;
72 private Graphics2D _graphics;
73
74
81 public Graphics2DRenderer init(Graphics2D graphics) {
82 _graphics = graphics;
83 _defaultColor = graphics.getColor(); return this;
85 }
86
87
93 public void startRendering(GraphicalComposite composite) {
94 ClippingShape shape = composite.getClippingShape();
95 if (shape != null) {
96 ClippingRectangle rect = shape.getBoundingBox();
97 _graphics.clip(new Rectangle2D.Double (rect.getMinX(), rect.getMinY(),
98 rect.getMaxX() - rect.getMinX(), rect.getMaxY() - rect.getMinY()));
99 }
100 }
101
102
107 public void finishRendering(GraphicalComposite composite) {
108 _graphics.setClip(null);
109 }
110
111
112 public void render(Polygon polygon) {
113 int numberOfPoints = polygon.getNumberOfPoints();
114 if (numberOfPoints > 0) {
115 Color currentColor = _graphics.getColor();
116 GeneralPath p
117 = new GeneralPath (GeneralPath.WIND_EVEN_ODD, numberOfPoints);
118 p.moveTo((float) polygon.getPoint(0).getX(),
119 (float) polygon.getPoint(0).getY());
120 for (int i = 1; i < numberOfPoints; i++) {
121 p.lineTo((float) polygon.getPoint(i).getX(),
122 (float) polygon.getPoint(i).getY());
123 }
124 if (polygon.isClosed()) {
125 p.closePath();
126 }
127 drawShape(p, polygon, currentColor);
128 }
129 }
130
131
134 public void render(Rectangle rectangle) {
135 Color currentColor = _graphics.getColor();
136 GraphPoint center = rectangle.getCenter();
137 double width = rectangle.getWidth();
138 double height = rectangle.getHeight();
139 Rectangle2D rect = new Rectangle2D.Double (center.getX() - 0.5 * width,
140 center.getY() - 0.5 * height,
141 width, height);
142 drawShape(rect, rectangle, currentColor);
143 }
144
145
148 public void render(Oval oval) {
149 Color currentColor = _graphics.getColor();
150 GraphPoint center = oval.getCenter();
151 double width = oval.getWidth();
152 double height = oval.getHeight();
153 Ellipse2D ellipse = new Ellipse2D.Double (center.getX() - 0.5 * width,
154 center.getY() - 0.5 * height,
155 width, height);
156 drawShape(ellipse, oval, currentColor);
157 }
158
159 private void drawShape(Shape shape, BasicGraphicalElement element,
160 Color backupColor) {
161 GraphicAttributes attributes = element.getGraphicAttributes();
162 Color fillColor = null;
163 if (element.isClosed() && attributes instanceof FillAttributes) {
164 fillColor = ((FillAttributes) attributes).getFillColor();
165 }
166 if (fillColor != null) {
167 _graphics.setColor(fillColor);
168 _graphics.fill(shape);
169 }
170 Color lineColor = _defaultColor;
171 if (attributes instanceof LineAttributes) {
172 LineAttributes la = (LineAttributes) attributes;
173 BasicStroke stroke = new BasicStroke ((float) la.getLineThickness());
174 double[] linePattern = la.getLinePattern();
175 if (linePattern != null) {
176 float[] dash = new float[linePattern.length];
177 for (int i = 0; i < dash.length; i++) {
178 dash[i] = (float) la.getLinePattern()[i];
179 }
180 stroke = new BasicStroke (stroke.getLineWidth(), BasicStroke.CAP_BUTT,
181 BasicStroke.JOIN_MITER, 10f, dash, 0f);
182 }
183 _graphics.setStroke(stroke);
184 if (la.getLineColor() != null || fillColor != null) {
185 lineColor = la.getLineColor();
186 }
187 }
188 if (lineColor != null) {
189 _graphics.setColor(lineColor);
190 _graphics.draw(shape);
191 }
192 _graphics.setColor(backupColor);
193 }
194
195
206 public void render(Text text) {
207 final GraphicAttributes ga = text.getGraphicAttributes();
208 if (ga instanceof TextAttributes) {
209 final TextAttributes ta = (TextAttributes) ga;
210 final Color currentColor = _graphics.getColor();
211 Color fontColor = ta.getTextColor();
212 if (fontColor == null) {
213 fontColor = _defaultColor;
214 }
215 _graphics.setColor(fontColor);
216
217 final double scale = _graphics.getTransform().getScaleX();
218 final String str = text.getText();
219 final TextLayout layout
220 = new TextLayout (str.length() == 0 ? " " : str, GraphicsRenderer.createFont(ta, 0),
222 _graphics.getFontRenderContext());
223 double fs = ta.getFontSize();
224 fs = fs == 0 ? 1 / scale : fs / DEFAULT_FONT_SIZE;
225 final Shape ts
226 = layout.getOutline(new AffineTransform (fs, 0, 0, -fs, 0, 0));
227 final double x = -0.5 * ta.getHorizontalAnchor().getFactor()
228 * ts.getBounds2D().getWidth();
229 final double y = -0.5 * ta.getVerticalAnchor().getFactor()
230 * ts.getBounds2D().getHeight();
231 final AffineTransform transformation
232 = AffineTransform.getTranslateInstance(text.getPosition().getX(),
233 text.getPosition().getY());
234 transformation.rotate(ta.getOrientationAngle() * Math.PI / 180);
235 transformation.translate(x, y);
236 _graphics.fill(transformation.createTransformedShape(ts));
237 _graphics.setColor(currentColor);
238 }
239 }
240 }
241
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