| /* |
| * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.swing.colorchooser; |
| |
| import java.awt.Color; |
| import java.awt.Graphics; |
| import java.awt.Insets; |
| import java.awt.event.MouseEvent; |
| import java.awt.event.MouseListener; |
| import java.awt.event.MouseMotionListener; |
| import java.awt.image.BufferedImage; |
| import javax.swing.JComponent; |
| |
| final class DiagramComponent extends JComponent implements MouseListener, MouseMotionListener { |
| |
| private final ColorPanel panel; |
| private final boolean diagram; |
| |
| private final Insets insets = new Insets(0, 0, 0, 0); |
| |
| private int width; |
| private int height; |
| |
| private int[] array; |
| private BufferedImage image; |
| |
| DiagramComponent(ColorPanel panel, boolean diagram) { |
| this.panel = panel; |
| this.diagram = diagram; |
| addMouseListener(this); |
| addMouseMotionListener(this); |
| } |
| |
| @Override |
| protected void paintComponent(Graphics g) { |
| getInsets(this.insets); |
| this.width = getWidth() - this.insets.left - this.insets.right; |
| this.height = getHeight() - this.insets.top - this.insets.bottom; |
| |
| boolean update = (this.image == null) |
| || (this.width != this.image.getWidth()) |
| || (this.height != this.image.getHeight()); |
| if (update) { |
| int size = this.width * this.height; |
| if ((this.array == null) || (this.array.length < size)) { |
| this.array = new int[size]; |
| } |
| this.image = new BufferedImage(this.width, this.height, BufferedImage.TYPE_INT_RGB); |
| } |
| { |
| float dx = 1.0f / (float) (this.width - 1); |
| float dy = 1.0f / (float) (this.height - 1); |
| |
| int offset = 0; |
| float y = 0.0f; |
| for (int h = 0; h < this.height; h++, y += dy) { |
| if (this.diagram) { |
| float x = 0.0f; |
| for (int w = 0; w < this.width; w++, x += dx, offset++) { |
| this.array[offset] = this.panel.getColor(x, y); |
| } |
| } |
| else { |
| int color = this.panel.getColor(y); |
| for (int w = 0; w < this.width; w++, offset++) { |
| this.array[offset] = color; |
| } |
| } |
| } |
| } |
| this.image.setRGB(0, 0, this.width, this.height, this.array, 0, this.width); |
| g.drawImage(this.image, this.insets.left, this.insets.top, this.width, this.height, this); |
| if (isEnabled()) { |
| this.width--; |
| this.height--; |
| g.setXORMode(Color.WHITE); |
| g.setColor(Color.BLACK); |
| if (this.diagram) { |
| int x = getValue(this.panel.getValueX(), this.insets.left, this.width); |
| int y = getValue(this.panel.getValueY(), this.insets.top, this.height); |
| g.drawLine(x - 8, y, x + 8, y); |
| g.drawLine(x, y - 8, x, y + 8); |
| } |
| else { |
| int z = getValue(this.panel.getValueZ(), this.insets.top, this.height); |
| g.drawLine(this.insets.left, z, this.insets.left + this.width, z); |
| } |
| g.setPaintMode(); |
| } |
| } |
| |
| public void mousePressed(MouseEvent event) { |
| mouseDragged(event); |
| } |
| |
| public void mouseReleased(MouseEvent event) { |
| } |
| |
| public void mouseClicked(MouseEvent event) { |
| } |
| |
| public void mouseEntered(MouseEvent event) { |
| } |
| |
| public void mouseExited(MouseEvent event) { |
| } |
| |
| public void mouseMoved(MouseEvent event) { |
| } |
| |
| public void mouseDragged(MouseEvent event) { |
| if (isEnabled()) { |
| float y = getValue(event.getY(), this.insets.top, this.height); |
| if (this.diagram) { |
| float x = getValue(event.getX(), this.insets.left, this.width); |
| this.panel.setValue(x, y); |
| } |
| else { |
| this.panel.setValue(y); |
| } |
| } |
| } |
| |
| private static int getValue(float value, int min, int max) { |
| return min + (int) (value * (float) (max)); |
| } |
| |
| private static float getValue(int value, int min, int max) { |
| if (min < value) { |
| value -= min; |
| return (value < max) |
| ? (float) value / (float) max |
| : 1.0f; |
| } |
| return 0.0f; |
| } |
| } |