Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
// Copyright by Barry G. Becker, 2012. Licensed under MIT License: http://www.opensource.org/licenses/MIT
package com.barrybecker4.ui.legend;
import com.barrybecker4.common.app.AppContext;
import com.barrybecker4.ui.util.ColorMap;
import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
/**
* Use the controls within this edit bar to edit the color legend.
* Does not show is isEditable is false.
* Not static so we can call methods in the owning legend class.
*
* @author Barry Becker
*/
class LegendEditBar extends JPanel
implements MouseListener, MouseMotionListener {
static final int MARGIN = 5;
private static final Color EDIT_BAR_BG = new Color(255, 255, 255, 180);
private static final int MARKER_SIZE = 6;
private static final int MARKER_HALF_SIZE = 3;
private static final BasicStroke MARKER_STROKE = new BasicStroke(0.5f);
ColorMap cmap_;
private double ratio_;
private int dragIndex_ = -1;
private int dragPosition_;
private Component owner;
LegendEditBar(ColorMap colormap, Component owner) {
cmap_ = colormap;
this.owner = owner;
addMouseListener(this);
addMouseMotionListener(this);
}
@Override
public void paintComponent(Graphics g) {
super.paintComponents(g);
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(
RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON );
g2.setColor(EDIT_BAR_BG);
g2.fillRect(MARGIN, 0, getWidth() - 2*MARGIN, MARKER_SIZE + 4);
ratio_ = (double) (getWidth() - 2*MARGIN) / cmap_.getValueRange();
g2.setStroke(MARKER_STROKE);
for (int i = 0; i < cmap_.getNumValues(); i++) {
if (dragIndex_ != i) {
int x = getPositionForValue(cmap_.getValue(i));
drawMarker(cmap_.getColor(i), x, g2);
}
}
if (dragIndex_ > 0) {
drawMarker(cmap_.getColor(dragIndex_), dragPosition_, g2);
}
}
/**
* Draw a little triangular marker for the draggable control point.
*/
private void drawMarker(Color c, int xpos, Graphics2D g2) {
g2.setColor(c);
int[] xpoints = {xpos - MARKER_HALF_SIZE, xpos + MARKER_HALF_SIZE, xpos};
int[] ypoints = {1, 1, MARKER_SIZE + 2};
Polygon triangle = new Polygon(xpoints, ypoints, 3);
g2.fillPolygon(triangle);
g2.setColor(Color.BLACK);
//g2.drawPolygon(triangle);
g2.drawLine(xpoints[1], ypoints[1], xpoints[2], ypoints[2]);
}
private double getValueForPosition(int x) {
return ((double)x - MARGIN) / ratio_ + cmap_.getMinValue();
}
private int getPositionForValue(double v) {
return (int) (MARGIN + ratio_ * (v - cmap_.getMinValue()));
}
/**
* @return -1 if no control index under the given x pos
*/
private int getControlIndex(int xpos) {
double v = getValueForPosition(xpos);
int i = cmap_.getClosestIndexForValue(v);
int diff = Math.abs(xpos - getPositionForValue(cmap_.getValue(i)));
if (diff <= MARKER_HALF_SIZE + 1)
return i;
else
return -1;
}
/**
* @return the index at or to the left of xpos
*/
private int getLeftControlIndex(int xpos) {
double v = getValueForPosition(xpos);
return cmap_.getLeftIndexForValue(v);
}
public void mouseClicked(MouseEvent e) {
int xpos = e.getX();
int index = getControlIndex(xpos);
if (e.getButton() == MouseEvent.BUTTON3) {
// delete on right click
if (index != -1) {
cmap_.removeControlPoint(index);
}
}
else if (e.getClickCount() > 1) {
Color oldColor = cmap_.getColorForValue(getValueForPosition(xpos));
Color newControlColor =
JColorChooser.showDialog(this, AppContext.getLabel("NEW_POINT_PATH"), oldColor);
if (newControlColor != null) {
if (index == -1) {
// add a new control point and marker here if no point is double clicked on.
cmap_.insertControlPoint(getLeftControlIndex(xpos)+1, getValueForPosition(xpos), newControlColor);
}
else {
// get a new color for this control point double clicked on
cmap_.setColor(index, newControlColor);
}
owner.repaint();
}
}
}
public void mousePressed(MouseEvent e) {
int index = getControlIndex(e.getX());
if (index > 0 && index < (cmap_.getNumValues() - 1)) {
// we are dragging the control point.
// Note: can't drag the first and last control points.
dragIndex_ = index;
dragPosition_ = e.getX();
}
}
public void mouseReleased(MouseEvent e) {
// dropped
updateDrag(e.getX());
dragIndex_ = -1;
owner.repaint();
}
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
private void updateDrag(int xpos) {
if (dragIndex_ > 0) {
double v = getValueForPosition(xpos);
if (v < cmap_.getValue(dragIndex_+1) && v > cmap_.getValue(dragIndex_ - 1)) {
cmap_.setValue(dragIndex_, v);
dragPosition_ = xpos;
//repaint();
paint( getGraphics() );
}
}
}
public void mouseDragged(MouseEvent e) {
updateDrag(e.getX());
}
public void mouseMoved(MouseEvent e) {}
}
