84 lines
2.3 KiB
Java
84 lines
2.3 KiB
Java
package ch.zhaw.ads;
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import javax.swing.*;
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import java.awt.*;
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import java.util.StringTokenizer;
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public class GraphicPanel extends JPanel {
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String figure;
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public void setFigure(String figure) {
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this.figure = figure;
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paint(getGraphics());
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}
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private void drawRect(Graphics g, double x, double y, double width, double height, String style) {
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int w = getWidth();
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int h = getHeight();
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int ix0 = (int) (w * x);
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int iy0 = (int) (h * y);
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int ix1 = (int) (w * (x + width));
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int iy1 = (int) (h * (y + height));
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if (style.equals("draw")) {
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g.drawRect(ix0, h - iy1, ix1 - ix0, iy1 - iy0);
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} else {
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g.fillRect(ix0, h - iy1, ix1 - ix0, iy1 - iy0);
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}
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}
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private void drawFigure(Graphics g) {
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if (figure != null) {
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int w = getWidth();
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int h = getHeight();
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g.setColor(Color.black);
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StringTokenizer tok = new StringTokenizer(figure, " <>=/,\"\n");
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while (tok.hasMoreTokens()) {
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String fig = tok.nextToken();
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if (fig.equals("line")) {
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tok.nextToken();
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double x1 = Double.parseDouble(tok.nextToken());
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tok.nextToken();
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double y1 = Double.parseDouble(tok.nextToken());
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tok.nextToken();
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double x2 = Double.parseDouble(tok.nextToken());
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tok.nextToken();
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double y2 = Double.parseDouble(tok.nextToken());
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g.drawLine((int) (x1 * w), h - (int) (y1 * h),
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(int) (x2 * w), h - (int) (y2 * h));
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} else if (fig.equals("rect")) {
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tok.nextToken();
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double x = Double.parseDouble(tok.nextToken());
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tok.nextToken();
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double y = Double.parseDouble(tok.nextToken());
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tok.nextToken();
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double width = Double.parseDouble(tok.nextToken());
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tok.nextToken();
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double height = Double.parseDouble(tok.nextToken());
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tok.nextToken();
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String style = tok.nextToken();
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drawRect(g, x, y, width, height, style);
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} else if (fig.equals("color")) {
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tok.nextToken();
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int red = Integer.parseInt(tok.nextToken());
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tok.nextToken();
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int green = Integer.parseInt(tok.nextToken());
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tok.nextToken();
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int blue = Integer.parseInt(tok.nextToken());
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g.setColor(new Color(red, green, blue));
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}
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}
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}
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}
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private void clear(Graphics g) {
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int w = getWidth();
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int h = getHeight();
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g.setColor(new Color(240, 240, 240));
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g.fillRect(0, 0, w, h);
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}
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public void paint(Graphics g) {
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clear(g);
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drawFigure(g);
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}
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} |