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| Back to [[Into Java - Part XVI]]
| | [[Category:For Removal]] |
| <PRE>
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| import java.awt.*;
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| public class PaintShape {
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| private boolean filledShape;
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| private Color paintColor;
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| private int shape;
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| private int startX;
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| private int startY;
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| private int stopX;
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| private int stopY;
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| private Rectangle rect;
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| public PaintShape(boolean filled, Color c,
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| int sh, int x, int y) {
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| filledShape = filled;
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| paintColor = c;
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| shape = sh;
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| startX = x;
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| startY = y;
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| }
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| public void setStop(int x, int y) {
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| stopX = x;
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| stopY = y;
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| int xS, wid, yS, hig; // speedy declarations
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| if (startX < stopX) {
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| xS = startX;
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| wid = stopX - startX;
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| } else {
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| xS = stopX; // avoid negative width
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| wid = startX - stopX;
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| }
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| if (startY < stopY) {
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| yS = startY;
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| hig = stopY - startY;
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| } else {
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| yS = stopY; // avoid negative height
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| hig = startY - stopY;
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| }
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| /* make the rect bigger than shape itself */
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| rect = new Rectangle(xS-1, yS-1, wid+2, hig+2);
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| }
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| public boolean contains(Point xy) {
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| return rect.contains(xy);
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| }
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| public void paintComponent(Graphics g) {
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| Color oldColor = g.getColor();
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| g.setColor(paintColor);
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| if (shape == PaintPanel.LINE) { // that is line
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| g.drawLine(startX, startY, stopX, stopY);
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| } else {
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| /* make four temp variables to avoid trouble */
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| int startXX = startX;
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| int startYY = startY;
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| int width = stopX - startX;
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| int height = stopY - startY;
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| if (width < 0) { // not good
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| startXX = stopX;
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| width = -width;
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| } else {
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| startXX = startX;
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| }
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| if (height < 0) { // not good
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| startYY = stopY;
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| height = -height;
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| } else {
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| startYY = startY;
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| }
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| if (shape == PaintPanel.RECTANGLE) { // that is rectangle
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| if (filledShape) {
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| g.fillRect(startXX, startYY, width, height);
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| } else {
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| g.drawRect(startXX, startYY, width, height);
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| }
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| } else { // remaining is oval
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| if (filledShape) {
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| g.fillOval(startXX, startYY, width, height);
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| } else {
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| g.drawOval(startXX, startYY, width, height);
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| }
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| }
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| }
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| g.setColor(oldColor);
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| }
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| }
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| </PRE>
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| [[Category:Java Articles]] | |