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JBackgroundPanel (GPL)
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/* | |
* This program is free software: you can redistribute it and/or modify | |
* it under the terms of the GNU General Public License as published by | |
* the Free Software Foundation, either version 3 of the License, or | |
* (at your option) any later version. | |
* | |
* This program 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 for more details. | |
* | |
* You should have received a copy of the GNU General Public License | |
* along with this program. If not, see <http://www.gnu.org/licenses/>. | |
*/ | |
package gui; | |
import java.awt.EventQueue; | |
import java.awt.Graphics; | |
import java.awt.Image; | |
import javax.swing.JPanel; | |
public class JBackgroundPanel extends JPanel { | |
/** | |
* | |
*/ | |
private static final long serialVersionUID = 1L; | |
private Image background = null; | |
public static final int FULL_IMAGE = 0; | |
public static final int FILL_PANEL = 1; | |
public static final int DISTORT_IMAGE = 2; | |
private int backgroundType = FULL_IMAGE; | |
public void paintComponent(Graphics g) { | |
super.paintComponent(g); | |
if (background != null) { | |
drawImage(background, g); | |
} | |
} | |
public void keyPressed(int keyCode) { | |
} | |
public void keyReleased(int keyCode) { | |
} | |
private void drawImage(Image image, Graphics g) { | |
double scale; | |
switch (backgroundType) { | |
case 0: | |
scale = (double) (this.getHeight()) / (double) (image.getHeight(null)); | |
if (image.getWidth(null) * scale > getWidth()) { | |
scale = (double) (this.getWidth()) / (double) (image.getWidth(null)); | |
} | |
g.drawImage(image, (int) ((getWidth() - (image.getWidth(null) * scale)) / 2), | |
(int) ((getHeight() - (image.getHeight(null) * scale)) / 2), (int) (image.getWidth(null) * scale), | |
(int) (image.getHeight(null) * scale), getBackground(), null); | |
break; | |
case 1: | |
scale = (double) (this.getHeight()) / (double) (image.getHeight(null)); | |
if (image.getWidth(null) * scale < getWidth()) { | |
scale = (double) (this.getWidth()) / (double) (image.getWidth(null)); | |
} | |
g.drawImage(image, (int) ((getWidth() - (image.getWidth(null) * scale)) / 2), | |
(int) ((getHeight() - (image.getHeight(null) * scale)) / 2), (int) (image.getWidth(null) * scale), | |
(int) (image.getHeight(null) * scale), getBackground(), null); | |
break; | |
default: | |
g.drawImage(image, 0, 0, getWidth(), getHeight(), getBackground(), null); | |
break; | |
} | |
} | |
public void setBackground(Image backgroundImage) { | |
background = backgroundImage; | |
EventQueue.invokeLater(new Runnable() { | |
public void run() { | |
repaint(); | |
} | |
}); | |
} | |
public Image getBackgroundImage() { | |
return background; | |
} | |
public void setBackgroundType(int backgroundType) { | |
if (this.backgroundType != backgroundType) { | |
this.backgroundType = backgroundType; | |
repaint(); | |
} | |
} | |
// Mutates the supplied Point | |
public void mapToBackgroundMutate(Point position) { | |
if (background == null) | |
return; | |
double xscale; | |
double yscale; | |
int xOffset; | |
int yOffset; | |
switch (backgroundType) { | |
case 0: | |
xscale = yscale = (double) (this.getHeight()) / (double) (background.getHeight(null)); | |
if (background.getWidth(null) * xscale > getWidth()) { | |
xscale = yscale = (double) (this.getWidth()) / (double) (background.getWidth(null)); | |
} | |
xOffset = (int) ((getWidth() - (background.getWidth(null) * xscale)) / 2); | |
yOffset = (int) ((getHeight() - (background.getHeight(null) * yscale)) / 2); | |
break; | |
case 1: | |
xscale = yscale = (double) (this.getHeight()) / (double) (background.getHeight(null)); | |
if (background.getWidth(null) * xscale < getWidth()) { | |
xscale = yscale = (double) (this.getWidth()) / (double) (background.getWidth(null)); | |
} | |
xOffset = (int) ((getWidth() - (background.getWidth(null) * xscale)) / 2); | |
yOffset = (int) ((getHeight() - (background.getHeight(null) * yscale)) / 2); | |
break; | |
default: | |
xOffset = yOffset = 0; | |
xscale = (double) getWidth() / background.getWidth(null); | |
yscale = (double) getHeight() / background.getHeight(null); | |
break; | |
} | |
position.setLocation((int) ((position.getX() - xOffset) / xscale), | |
(int) ((position.getY() - yOffset) / yscale)); | |
// System.out.println( | |
// "xscale: " + xscale + "\nyscale: " + yscale + "\nxOffset: " + xOffset + "\nyOffset: " + yOffset); | |
// System.out.println(position); | |
// System.out.println("position.x: " + position.x + "\nposition.y: " + position.y); | |
} | |
// Clones the supplied Point before passing it to mapToBackgroundMutate | |
public Point mapToBackground(Point position) { | |
Point result = new Point(position); | |
mapToBackgroundMutate(result); | |
return result; | |
} | |
} |
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