Add zoom controls to basic drawing.
This commit is contained in:
parent
7827bfc63c
commit
dede97bc68
@ -5,12 +5,16 @@ import java.awt.Color;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.Image;
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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.MouseAdapter;
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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.geom.AffineTransform;
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import java.awt.geom.NoninvertibleTransformException;
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import java.awt.geom.Point2D;
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import java.awt.image.BufferedImage;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.IdentityHashMap;
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@ -286,17 +290,42 @@ public class BasicDrawing extends JPanel implements Drawing {
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// Mapping DrawingClickListener -> MouseEventListener
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private Map<DrawingClickListener, MouseListener> listenerMapping = new IdentityHashMap<>();
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// Zoom controls
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private MapZoomControls zoomControls;
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/**
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* Create a new BasicDrawing.
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*
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*/
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public BasicDrawing() {
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this.zoomAndPanListener = new ZoomAndPanListener(this, ZoomAndPanListener.DEFAULT_MIN_ZOOM_LEVEL, 20, 1.2);
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// Try...
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try {
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this.zoomControls = new MapZoomControls(this, 0, ZoomAndPanListener.DEFAULT_MIN_ZOOM_LEVEL, 20);
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this.zoomControls.addZoomInListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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zoomAndPanListener.zoomIn();
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}
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});
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this.zoomControls.addZoomOutListener(new ActionListener() {
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@Override
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public void actionPerformed(ActionEvent e) {
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zoomAndPanListener.zoomOut();
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}
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});
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}
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catch (IOException e) {
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e.printStackTrace();
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}
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}
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@Override
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public void paintComponent(Graphics g1) {
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super.paintComponent(g1);
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Graphics2D g = (Graphics2D) g1;
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AffineTransform sTransform = g.getTransform();
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g.clearRect(0, 0, getWidth(), getHeight());
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g.setTransform(zoomAndPanListener.getCoordTransform());
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@ -311,6 +340,14 @@ public class BasicDrawing extends JPanel implements Drawing {
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overlay.draw(g);
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}
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}
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g.setTransform(sTransform);
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if (this.zoomControls != null) {
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this.zoomControls.setZoomLevel(this.zoomAndPanListener.getZoomLevel());
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this.zoomControls.draw(g, getWidth() - this.zoomControls.getWidth() - 20,
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this.getHeight() - this.zoomControls.getHeight() - 20, this);
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}
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}
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/**
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@ -513,6 +550,7 @@ public class BasicDrawing extends JPanel implements Drawing {
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(this.getHeight() - this.height * scale) / 2);
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this.zoomAndPanListener.getCoordTransform().scale(scale, scale);
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this.zoomAndPanListener.setZoomLevel(0);
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this.zoomControls.setZoomLevel(0);
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// Repaint
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this.repaint();
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@ -0,0 +1,173 @@
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package org.insa.graphics.drawing.components;
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import java.awt.Color;
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import java.awt.Component;
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import java.awt.Graphics2D;
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import java.awt.Image;
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import java.awt.Rectangle;
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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.MouseAdapter;
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import java.awt.event.MouseEvent;
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import java.awt.image.ImageObserver;
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import java.io.File;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import javax.imageio.ImageIO;
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public class MapZoomControls {
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// Default ID for action events
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private static final int ZOOM_IN_ACTION_ID = 0x1;
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private static final String ZOOM_IN_ACTION_NAME = "ZoomIn";
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private static final int ZOOM_OUT_ACTION_ID = 0x2;
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private static final String ZOOM_OUT_ACTION_NAME = "ZoomOut";
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// Height
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private static final int DEFAULT_HEIGHT = 18;
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// Default spacing between mark
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private static final int DEFAULT_SPACING = 3;
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// Zoom ticks ratio from height (not the current one)
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private static final double ZOOM_TICK_HEIGHT_RATIO = 0.3;
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// Zoom ticks color
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private static final Color ZOOM_TICK_COLOR = Color.GRAY;
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// Current zoom ticks ratio from height
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private static final double CURRENT_ZOOM_TICK_HEIGHT_RATIO = 0.8;
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// Zoom ticks color
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private static final Color CURRENT_ZOOM_TICK_COLOR = new Color(25, 25, 25);
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// Use half mark or not
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private boolean halfMark = true;
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private int currentLevel = 0;
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private final int minLevel, maxLevel;
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// Zoom in/out image and their rectangles.
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private final Image zoomIn, zoomOut;
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private final Rectangle zoomInRect = new Rectangle(0, 0, 0, 0), zoomOutRect = new Rectangle(0, 0, 0, 0);
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// List of listeners
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private final List<ActionListener> zoomInListeners = new ArrayList<>();
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private final List<ActionListener> zoomOutListeners = new ArrayList<>();
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public MapZoomControls(Component component, final int defaultZoom, final int minZoom, final int maxZoom)
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throws IOException {
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zoomIn = ImageIO.read(new File("zoomIn.png")).getScaledInstance(DEFAULT_HEIGHT, DEFAULT_HEIGHT,
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Image.SCALE_SMOOTH);
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zoomOut = ImageIO.read(new File("zoomOut.png")).getScaledInstance(DEFAULT_HEIGHT, DEFAULT_HEIGHT,
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Image.SCALE_SMOOTH);
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this.currentLevel = defaultZoom;
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this.minLevel = minZoom;
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this.maxLevel = maxZoom;
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component.addMouseListener(new MouseAdapter() {
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@Override
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public void mouseClicked(MouseEvent e) {
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if (zoomInRect.contains(e.getPoint()) && currentLevel < maxLevel) {
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currentLevel += 1;
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for (ActionListener al: zoomInListeners) {
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al.actionPerformed(new ActionEvent(this, ZOOM_IN_ACTION_ID, ZOOM_IN_ACTION_NAME));
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}
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}
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else if (zoomOutRect.contains(e.getPoint()) && currentLevel > minLevel) {
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currentLevel -= 1;
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for (ActionListener al: zoomOutListeners) {
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al.actionPerformed(new ActionEvent(this, ZOOM_OUT_ACTION_ID, ZOOM_OUT_ACTION_NAME));
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}
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}
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component.repaint();
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}
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});
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}
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/**
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* Add a zoom-in listener.
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*
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* @param listener
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*/
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public void addZoomInListener(ActionListener listener) {
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this.zoomInListeners.add(listener);
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}
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/**
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* Add a zoom-out listener.
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*
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* @param listener
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*/
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public void addZoomOutListener(ActionListener listener) {
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this.zoomOutListeners.add(listener);
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}
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/**
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* @return the current zoom level.
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*/
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public int getZoomLevel() {
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return this.currentLevel;
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}
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/**
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* Set the current zoom level.
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*
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* @param level
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*/
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public void setZoomLevel(int level) {
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this.currentLevel = level;
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}
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/**
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* @return Height of this "component" when drawn.
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*/
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public int getHeight() {
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return DEFAULT_HEIGHT;
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}
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/**
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* @return Width of this "component" when drawn.
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*/
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public int getWidth() {
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return DEFAULT_HEIGHT + 2 + (this.maxLevel - this.minLevel) * DEFAULT_SPACING + 1 + 2 + DEFAULT_HEIGHT;
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}
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protected void draw(Graphics2D g, int xoffset, int yoffset, ImageObserver observer) {
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int height = getHeight();
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// Draw icon
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g.drawImage(zoomOut, xoffset, yoffset, observer);
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zoomOutRect.setBounds(xoffset, yoffset, DEFAULT_HEIGHT, DEFAULT_HEIGHT);
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// Draw ticks
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xoffset += DEFAULT_HEIGHT + 2;
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g.setColor(ZOOM_TICK_COLOR);
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g.drawLine(xoffset, yoffset + height / 2, xoffset + (this.maxLevel - this.minLevel) * DEFAULT_SPACING + 1,
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yoffset + height / 2);
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for (int i = 0; i <= (this.maxLevel - this.minLevel); i += halfMark ? 2 : 1) {
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g.drawLine(xoffset + i * DEFAULT_SPACING, yoffset + (int) (height * (1 - ZOOM_TICK_HEIGHT_RATIO) / 2),
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xoffset + i * DEFAULT_SPACING, yoffset + (int) (height * (1 + ZOOM_TICK_HEIGHT_RATIO) / 2));
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}
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// Draw current ticks
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g.setColor(CURRENT_ZOOM_TICK_COLOR);
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g.drawLine(xoffset + (currentLevel - this.minLevel) * DEFAULT_SPACING,
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yoffset + (int) (height * (1 - CURRENT_ZOOM_TICK_HEIGHT_RATIO) / 2),
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xoffset + (currentLevel - this.minLevel) * DEFAULT_SPACING,
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yoffset + (int) (height * (1 + CURRENT_ZOOM_TICK_HEIGHT_RATIO) / 2));
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xoffset += (this.maxLevel - this.minLevel) * DEFAULT_SPACING + 1 + 2;
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g.drawImage(zoomIn, xoffset, yoffset, observer);
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zoomInRect.setBounds(xoffset, yoffset, DEFAULT_HEIGHT, DEFAULT_HEIGHT);
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}
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}
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@ -1,141 +1,176 @@
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package org.insa.graphics.drawing.components;
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import java.awt.*;
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import java.awt.event.*;
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import java.awt.Component;
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import java.awt.Point;
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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 java.awt.event.MouseWheelEvent;
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import java.awt.event.MouseWheelListener;
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import java.awt.geom.AffineTransform;
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import java.awt.geom.NoninvertibleTransformException;
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import java.awt.geom.Point2D;
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public class ZoomAndPanListener implements MouseListener, MouseMotionListener, MouseWheelListener {
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public static final int DEFAULT_MIN_ZOOM_LEVEL = -20;
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public static final int DEFAULT_MAX_ZOOM_LEVEL = 10;
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public static final double DEFAULT_ZOOM_MULTIPLICATION_FACTOR = 1.2;
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public static final int DEFAULT_MIN_ZOOM_LEVEL = -20;
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public static final int DEFAULT_MAX_ZOOM_LEVEL = 10;
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public static final double DEFAULT_ZOOM_MULTIPLICATION_FACTOR = 1.2;
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private Component targetComponent;
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private Component targetComponent;
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private int zoomLevel = 0;
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private int minZoomLevel = DEFAULT_MIN_ZOOM_LEVEL;
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private int maxZoomLevel = DEFAULT_MAX_ZOOM_LEVEL;
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private double zoomMultiplicationFactor = DEFAULT_ZOOM_MULTIPLICATION_FACTOR;
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private int zoomLevel = 0;
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private int minZoomLevel = DEFAULT_MIN_ZOOM_LEVEL;
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private int maxZoomLevel = DEFAULT_MAX_ZOOM_LEVEL;
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private double zoomMultiplicationFactor = DEFAULT_ZOOM_MULTIPLICATION_FACTOR;
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private Point dragStartScreen;
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private Point dragEndScreen;
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private AffineTransform coordTransform = new AffineTransform();
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private Point dragStartScreen;
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private Point dragEndScreen;
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private AffineTransform coordTransform = new AffineTransform();
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public ZoomAndPanListener(Component targetComponent) {
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this.targetComponent = targetComponent;
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}
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public ZoomAndPanListener(Component targetComponent) {
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this.targetComponent = targetComponent;
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}
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public ZoomAndPanListener(Component targetComponent, int minZoomLevel, int maxZoomLevel, double zoomMultiplicationFactor) {
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this.targetComponent = targetComponent;
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this.minZoomLevel = minZoomLevel;
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this.maxZoomLevel = maxZoomLevel;
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this.zoomMultiplicationFactor = zoomMultiplicationFactor;
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}
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public void translate(double dx, double dy) {
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coordTransform.translate(dx, dy);
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targetComponent.repaint();
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}
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public ZoomAndPanListener(Component targetComponent, int minZoomLevel, int maxZoomLevel,
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double zoomMultiplicationFactor) {
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this.targetComponent = targetComponent;
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this.minZoomLevel = minZoomLevel;
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this.maxZoomLevel = maxZoomLevel;
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this.zoomMultiplicationFactor = zoomMultiplicationFactor;
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}
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public void translate(double dx, double dy) {
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coordTransform.translate(dx, dy);
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targetComponent.repaint();
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}
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public void mouseClicked(MouseEvent e) {
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}
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public void mouseClicked(MouseEvent e) {
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}
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public void mousePressed(MouseEvent e) {
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dragStartScreen = e.getPoint();
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dragEndScreen = null;
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}
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public void mousePressed(MouseEvent e) {
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dragStartScreen = e.getPoint();
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dragEndScreen = null;
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}
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public void mouseReleased(MouseEvent e) {
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// moveCamera(e);
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}
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public void mouseReleased(MouseEvent e) {
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}
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public void mouseEntered(MouseEvent e) {
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}
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public void mouseEntered(MouseEvent e) {
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}
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public void mouseExited(MouseEvent e) {
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}
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public void mouseExited(MouseEvent e) {
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}
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public void mouseMoved(MouseEvent e) {
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}
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public void mouseMoved(MouseEvent e) {
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}
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public void mouseDragged(MouseEvent e) {
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moveCamera(e);
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}
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public void mouseDragged(MouseEvent e) {
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moveCamera(e);
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}
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public void mouseWheelMoved(MouseWheelEvent e) {
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zoomCamera(e);
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}
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public void mouseWheelMoved(MouseWheelEvent e) {
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zoomCamera(e);
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}
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private void moveCamera(MouseEvent e) {
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try {
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dragEndScreen = e.getPoint();
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Point2D.Float dragStart = transformPoint(dragStartScreen);
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Point2D.Float dragEnd = transformPoint(dragEndScreen);
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double dx = dragEnd.getX() - dragStart.getX();
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double dy = dragEnd.getY() - dragStart.getY();
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coordTransform.translate(dx, dy);
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dragStartScreen = dragEndScreen;
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dragEndScreen = null;
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targetComponent.repaint();
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} catch (NoninvertibleTransformException ex) {
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ex.printStackTrace();
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}
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}
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private void moveCamera(MouseEvent e) {
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try {
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dragEndScreen = e.getPoint();
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Point2D.Float dragStart = transformPoint(dragStartScreen);
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Point2D.Float dragEnd = transformPoint(dragEndScreen);
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double dx = dragEnd.getX() - dragStart.getX();
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double dy = dragEnd.getY() - dragStart.getY();
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coordTransform.translate(dx, dy);
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dragStartScreen = dragEndScreen;
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dragEndScreen = null;
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targetComponent.repaint();
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}
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catch (NoninvertibleTransformException ex) {
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ex.printStackTrace();
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}
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}
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private void zoomCamera(MouseWheelEvent e) {
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try {
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int wheelRotation = e.getWheelRotation();
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Point p = e.getPoint();
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if (wheelRotation > 0) {
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if (zoomLevel < maxZoomLevel) {
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zoomLevel++;
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Point2D p1 = transformPoint(p);
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coordTransform.scale(1 / zoomMultiplicationFactor, 1 / zoomMultiplicationFactor);
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Point2D p2 = transformPoint(p);
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coordTransform.translate(p2.getX() - p1.getX(), p2.getY() - p1.getY());
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targetComponent.repaint();
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}
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} else {
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if (zoomLevel > minZoomLevel) {
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zoomLevel--;
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Point2D p1 = transformPoint(p);
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coordTransform.scale(zoomMultiplicationFactor, zoomMultiplicationFactor);
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Point2D p2 = transformPoint(p);
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coordTransform.translate(p2.getX() - p1.getX(), p2.getY() - p1.getY());
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targetComponent.repaint();
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}
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}
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} catch (NoninvertibleTransformException ex) {
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ex.printStackTrace();
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}
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}
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private void zoomCamera(MouseWheelEvent e) {
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try {
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int wheelRotation = e.getWheelRotation();
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Point p = e.getPoint();
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if (wheelRotation < 0) {
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if (zoomLevel < maxZoomLevel) {
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zoomLevel++;
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Point2D p1 = transformPoint(p);
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coordTransform.scale(zoomMultiplicationFactor, zoomMultiplicationFactor);
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Point2D p2 = transformPoint(p);
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coordTransform.translate(p2.getX() - p1.getX(), p2.getY() - p1.getY());
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targetComponent.repaint();
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}
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}
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else {
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if (zoomLevel > minZoomLevel) {
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zoomLevel--;
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Point2D p1 = transformPoint(p);
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coordTransform.scale(1 / zoomMultiplicationFactor, 1 / zoomMultiplicationFactor);
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Point2D p2 = transformPoint(p);
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coordTransform.translate(p2.getX() - p1.getX(), p2.getY() - p1.getY());
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targetComponent.repaint();
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}
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}
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}
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catch (NoninvertibleTransformException ex) {
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ex.printStackTrace();
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}
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}
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private Point2D.Float transformPoint(Point p1) throws NoninvertibleTransformException {
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private Point2D.Float transformPoint(Point p1) throws NoninvertibleTransformException {
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AffineTransform inverse = coordTransform.createInverse();
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AffineTransform inverse = coordTransform.createInverse();
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Point2D.Float p2 = new Point2D.Float();
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inverse.transform(p1, p2);
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return p2;
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}
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Point2D.Float p2 = new Point2D.Float();
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inverse.transform(p1, p2);
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||||
return p2;
|
||||
}
|
||||
|
||||
public int getZoomLevel() {
|
||||
return zoomLevel;
|
||||
}
|
||||
public int getZoomLevel() {
|
||||
return zoomLevel;
|
||||
}
|
||||
|
||||
public void setZoomLevel(int zoomLevel) {
|
||||
this.zoomLevel = zoomLevel;
|
||||
}
|
||||
|
||||
public void setZoomLevel(int zoomLevel) {
|
||||
this.zoomLevel = zoomLevel;
|
||||
}
|
||||
public void zoomIn() {
|
||||
try {
|
||||
Point p = new Point(targetComponent.getWidth() / 2, targetComponent.getHeight() / 2);
|
||||
zoomLevel++;
|
||||
Point2D p1 = transformPoint(p);
|
||||
coordTransform.scale(zoomMultiplicationFactor, zoomMultiplicationFactor);
|
||||
Point2D p2 = transformPoint(p);
|
||||
coordTransform.translate(p2.getX() - p1.getX(), p2.getY() - p1.getY());
|
||||
targetComponent.repaint();
|
||||
}
|
||||
catch (NoninvertibleTransformException ex) {
|
||||
ex.printStackTrace();
|
||||
}
|
||||
}
|
||||
|
||||
public void zoomOut() {
|
||||
try {
|
||||
Point p = new Point(targetComponent.getWidth() / 2, targetComponent.getHeight() / 2);
|
||||
zoomLevel--;
|
||||
Point2D p1 = transformPoint(p);
|
||||
coordTransform.scale(1 / zoomMultiplicationFactor, 1 / zoomMultiplicationFactor);
|
||||
Point2D p2 = transformPoint(p);
|
||||
coordTransform.translate(p2.getX() - p1.getX(), p2.getY() - p1.getY());
|
||||
targetComponent.repaint();
|
||||
}
|
||||
catch (NoninvertibleTransformException ex) {
|
||||
ex.printStackTrace();
|
||||
}
|
||||
}
|
||||
|
||||
public AffineTransform getCoordTransform() {
|
||||
return coordTransform;
|
||||
}
|
||||
public AffineTransform getCoordTransform() {
|
||||
return coordTransform;
|
||||
}
|
||||
|
||||
public void setCoordTransform(AffineTransform coordTransform) {
|
||||
this.coordTransform = coordTransform;
|
||||
}
|
||||
public void setCoordTransform(AffineTransform coordTransform) {
|
||||
this.coordTransform = coordTransform;
|
||||
}
|
||||
}
|
BIN
zoomIn.png
Normal file
BIN
zoomIn.png
Normal file
Binary file not shown.
After Width: | Height: | Size: 3.5 KiB |
BIN
zoomOut.png
Normal file
BIN
zoomOut.png
Normal file
Binary file not shown.
After Width: | Height: | Size: 3.2 KiB |
Loading…
Reference in New Issue
Block a user