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tonniquetonnique
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JavaPainer is a simple analog for MS Windows Paint
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10 files changed

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‎JavaPainter.jar‎

15.6 KB
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‎painter/controller/PainterController.java‎

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package painter.controller;
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import java.awt.event.ActionEvent;
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import java.awt.event.ActionListener;
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import java.awt.event.MouseEvent;
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import java.awt.event.MouseListener;
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import java.awt.event.MouseMotionListener;
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import javax.swing.JLabel;
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import javax.swing.JPanel;
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import painter.model.PainterModel;
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import painter.view.ColorLabel;
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import painter.view.PainterCanvas;
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public class PainterController implements MouseListener, MouseMotionListener, ActionListener {
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private PainterModel model;
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public void setModel(PainterModel m) {model = m;}
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@Override
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public void actionPerformed(ActionEvent e) {
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if (e.getActionCommand().equals("mnuExit")) {
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System.exit(0);
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}
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if (e.getActionCommand().equals("mnuNew")) {
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model.cleanCanvas();
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}
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if (e.getActionCommand().equals("mnuSave")) {
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if (model == null ) return;
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model.saveImage();
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}
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if (e.getActionCommand().equals("mnuLoad")) {
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if (model == null ) return;
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model.loadImage();
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}
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}
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@Override
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public void mouseClicked(MouseEvent e) {
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if (e.getSource() instanceof ColorLabel ) {
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ColorLabel clrLabel = (ColorLabel) e.getSource();
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model.setColorLabelControlActive(clrLabel);
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}
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if (e.getSource() instanceof JLabel) {
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JLabel srcLabel = (JLabel) e.getSource();
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model.getActiveColorLabel().setColor(srcLabel.getBackground());
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}
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if (e.getSource() instanceof JPanel) {
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JPanel srcPanel = (JPanel) e.getSource();
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if (srcPanel.getName().equals("chooser")) {
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model.chooseAndSetColor();
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}
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}
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}
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@Override
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public void mousePressed(MouseEvent e) {
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if (e.getSource() instanceof PainterCanvas) {
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// 1 for left mouse Button; 2 for right muse Button
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int buttonNumber = 1; //left mouse button by default
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/* here we define which mouse button is pressed
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* by experiment (using system.out.println) i learned that
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* e.getModifiers() == 16 for left mouse button and
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* e.getModifiers() == 4 for right mouse button
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*/
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if (e.getModifiers() == 16) buttonNumber = 1;
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else if (e.getModifiers() == 4) buttonNumber = 2;
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model.addPoint(buttonNumber, e.getPoint(), true);
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}
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}
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@Override
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public void mouseDragged(MouseEvent e) {
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// 1 for left mouse Button; 2 for right muse Button
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int buttonNumber = 1; //left mouse button by default
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//Here we define which mouse button is pressed
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if (e.getModifiers() == 16) buttonNumber = 1;
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else if (e.getModifiers() == 4) buttonNumber = 2;
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model.addPoint(buttonNumber, e.getPoint(), false);
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}
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// Unused methods
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@Override
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public void mouseMoved(MouseEvent e) {}
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@Override
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public void mouseReleased(MouseEvent e) {}
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@Override
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public void mouseEntered(MouseEvent e) { }
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@Override
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public void mouseExited(MouseEvent e) {}
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}

‎painter/model/ColorPoint.java‎

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package painter.model;
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import java.awt.Color;
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import java.awt.Point;
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public class ColorPoint extends Point {
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private Color color;
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/* this is important. here we define that this is the start point in the sequence.
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* When user presses the mouse button and drags mouse we have a start point
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* and points that follow it in the sequence. When program redraws canvas,
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* we take all points in the ArayList and connect one point with another.
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* But if we have no such checking for start point then when user wants to start
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* drawing again, he/she presses mouse button but this the new point is not
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* separate from previous ones, but it is connected with the last point. Thus we have to set this
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* point as startPoint when we need it.*/
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private boolean startPoint = false;
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public ColorPoint(Color c, int x, int y) {
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super(x, y);
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this.color = c;
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}
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public Color getColor() {
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return color;
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}
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public void setStartPoint(boolean b) {
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startPoint = b;
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}
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public boolean isStartPoint() {
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return startPoint;
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}
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}

‎painter/model/IPainrerToolBar.java‎

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package painter.model;
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import painter.view.ColorLabel;
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public interface IPainrerToolBar {
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ColorLabel getColorLabel(int n);
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}

‎painter/model/IPainter.java‎

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package painter.model;
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import java.awt.Color;
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public interface IPainter {
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Color[] colors = new Color[] {
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Color.BLACK, new Color(127, 127, 127), new Color(136, 0, 21), Color.RED, new Color(255, 127, 39),
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Color.YELLOW, new Color(34, 177, 76), new Color(0, 162, 232), new Color(63, 72, 204),
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new Color(163, 73, 164), Color.WHITE, new Color(195, 195, 195), new Color(185, 122, 87), Color.PINK,
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new Color(255, 201, 14), new Color(239, 228, 176), new Color(181, 230, 29), new Color(153, 217, 234),
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new Color(112, 146, 190), new Color(200, 191, 231)
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};
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String[] colorsToolTips = new String[] {
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"×ĺđíűé", "Ňĺěíî-ńĺđűé", "Ňĺěíî-ęđŕńíűé", "Ęđŕńíűé","Îđŕíćĺâűé", "Ćĺëňűé", "Çĺëĺíűé", "Áčđţçîâűé",
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"Číäčăî", "Ëčëîâűé", "Áĺëűé", "Ńâĺňëî-ńĺđűé", "Ęîđč÷íĺâűé", "Đîçîâűé", "Çîëîňčńňűé", "Ńâĺňëî-ćĺëňűé",
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"Ňđŕâ˙íîé", "Ńâĺňëî-áčđţçîâűé", "Ńčçűé", "Ńčđĺíĺâűé"
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};
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Color labelColorSelectedBackground = Color.ORANGE;
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}

‎painter/model/PainterModel.java‎

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package painter.model;
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import java.awt.Color;
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import java.awt.Graphics2D;
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import java.awt.Image;
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import java.awt.Point;
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import java.awt.image.BufferedImage;
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import java.io.IOException;
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import javax.imageio.ImageIO;
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import javax.swing.JColorChooser;
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import javax.swing.JFileChooser;
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import javax.swing.JOptionPane;
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import javax.swing.filechooser.FileNameExtensionFilter;
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import painter.view.ColorLabel;
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import painter.view.PainterCanvas;
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public class PainterModel {
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private PainterCanvas canvas;
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private IPainrerToolBar toolbar;
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private ColorLabel colorLeft;
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private ColorLabel colorRight;
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private ColorLabel selectedRLColor;
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public PainterModel(PainterCanvas c, IPainrerToolBar t) {
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canvas = c;
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toolbar = t;
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colorLeft = toolbar.getColorLabel(1);
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colorRight = toolbar.getColorLabel(2);
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if (colorLeft == null || colorRight == null) {
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JOptionPane.showMessageDialog(null, "Íå óäàëîñü ïîëó÷èòü ññûëêó(è)\n"
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+ "íà îáúåêòû ColorLabel â êëàññå PainterModel", "Îøèáêà", JOptionPane.ERROR_MESSAGE);
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}
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selectedRLColor = colorLeft;
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}
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public void cleanCanvas() {
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canvas.cleanCanvas();
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}
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public void saveImage() {
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if (canvas == null) return;
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JFileChooser fchooser = new JFileChooser(".");
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FileNameExtensionFilter filter = new FileNameExtensionFilter("Image files", "jpg", "png", "gif");
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fchooser.setFileFilter(filter);
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fchooser.setAcceptAllFileFilterUsed(false);
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int result = fchooser.showSaveDialog(null);
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if (result == JFileChooser.APPROVE_OPTION) {
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BufferedImage image =(BufferedImage) canvas.createImage(canvas.getWidth(), canvas.getHeight());
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Graphics2D g2 = image.createGraphics();
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canvas.paint(g2);
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g2.dispose();
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String filename = fchooser.getSelectedFile().getName();
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String fileExt = filename.substring(filename.length()-3, filename.length());
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if (fileExt.equals("gif") || fileExt.equals("png") || fileExt.equals("jpg")) {
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try {
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ImageIO.write(image, fileExt, fchooser.getSelectedFile());
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}
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catch(IOException io) { io.printStackTrace(); }
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}
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}
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}
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public void loadImage() {
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if (canvas == null) return;
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JFileChooser fchooser = new JFileChooser(".");
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FileNameExtensionFilter filter = new FileNameExtensionFilter("Image files", "jpg", "png", "gif");
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fchooser.setFileFilter(filter);
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fchooser.setAcceptAllFileFilterUsed(false);
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int result = fchooser.showOpenDialog(null);
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if (result == JFileChooser.APPROVE_OPTION) {
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try {
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Image image = ImageIO.read(fchooser.getSelectedFile());
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canvas.setImage(image);
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} catch(IOException io) { io.printStackTrace(); }
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}
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}
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public void chooseAndSetColor() {
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Color c = JColorChooser.showDialog(null, "Âûáîð öâåòà", selectedRLColor.getColor());
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if (c != null) {
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selectedRLColor.setColor(c);
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}
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}
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/* Ïåðåêëþ÷àåò àêòèâíîå ïîëîæåíèå êîíòðîëîâ-ìîíèòîðîâ öâåòà äëÿ ëåâîé è ïðàâîé êíîïêè ìûøè
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* ýòîò ìåòîä ïîëó÷àåò óïðàâëåíè èç êîíòðîëëåðà (ñëóøàòåëÿ ñîáûòèé) */
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public void setColorLabelControlActive(ColorLabel cl) {
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if (cl != selectedRLColor)
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if (cl.getName().equals("1")) {
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switchColorLabel(colorLeft, selectedRLColor);
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} else {
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switchColorLabel(colorRight, selectedRLColor);
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}
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}
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// Ïåðåêëþ÷àåò àêòèâíîå ïîëîæåíèå êîíòðîëîâ-ìîíèòîðîâ öâåòà äëÿ ëåâîé è ïðàâîé êíîïêè ìûøè
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private void switchColorLabel(ColorLabel cl1, ColorLabel cl2) {
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cl1.setSelected(true);
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cl2.setSelected(false);
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selectedRLColor = cl1;
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}
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// Âîçâðàùåò àêòèâíóþ (âûáðàííóþ) êîìïîíåíòó ColorLabel
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public ColorLabel getActiveColorLabel() {
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return selectedRLColor;
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}
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/**
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*
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* @param button the int value for mouse button 1 - for Left Button; 2 for Right Button
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* @param point - is mouse coordinates
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* @param start - this param defines if this point is start point for drawing.
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* Start point takes place every time when user presses button and then drugs mouse.
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* After user released button new start point should take place when user press mouse button again. */
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public void addPoint(int button, Point point, boolean start) {
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// 1 for left mouse Button
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// 2 for right muse Button
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Color color = (button == 1) ? colorLeft.getColor() : colorRight.getColor();
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ColorPoint cp = new ColorPoint(color, point.x, point.y);
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if (start) {
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/* this is important. here we define that this is the start point in the sequence.
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* when user presses the mouse button and drags mouse we have a start point
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* and points following it in the sequence. */
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cp.setStartPoint(true);
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}
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canvas.addPoint(cp);
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}
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}

‎painter/view/ColorGrid.java‎

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package painter.view;
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import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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import painter.model.IPainter;
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public class ColorGrid extends JPanel {
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MouseListener controller;
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public ColorGrid(MouseListener ml) {
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this.controller = ml;
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int length = IPainter.colors.length;
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setLayout(new GridLayout(2, length / 2 , 3, 3));
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for (int i = 0; i < length; i++) {
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JLabel color = new JLabel();
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color.setBorder(BorderFactory.createLineBorder(Color.BLACK));
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color.setPreferredSize(new Dimension(17, 17));
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color.setBackground(IPainter.colors[i]);
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color.setOpaque(true);
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color.setName("colorLabel");
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color.addMouseListener(controller);
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color.setToolTipText(IPainter.colorsToolTips[i]);
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this.add(color);
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}
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}
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}

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