資源簡介
java大作業--畫圖板。可以繪圖（包含鉛筆工具及多種形狀）、調色、調節筆頭粗細和形狀、橡皮、吸管、保存圖片、打開圖片、剪切、復制、粘貼、撤銷。
代碼片段和文件信息
import?java.awt.AWTException;
import?java.awt.Color;
import?java.awt.Dimension;
import?java.awt.Graphics;
import?java.awt.Graphics2D;
import?java.awt.MouseInfo;
import?java.awt.Point;
import?java.awt.Robot;
import?java.awt.event.MouseEvent;
import?java.awt.event.MouseListener;
import?java.awt.event.MouseMotionListener;
import?java.awt.image.BufferedImage;
import?java.io.File;
import?java.io.IOException;
import?java.util.ArrayList;
import?java.util.List;
import?javax.imageio.ImageIO;
import?javax.swing.JPanel;
import?palettetool.PaletteStep;
import?palettetool.PaletteTool;
public?class?DrawingBoardPanel?extends?JPanel?implements?MouseListener
MouseMotionListener?{
private?static?final?long?serialVersionUID?=?1L;
private?int?stepCounts?=?0;
private?int?maxStepCounts?=?20;
private?PaletteTool?thisPaletteTool;
private?PaletteStep?thisPaletteStep;
private?List?paletteSteps;
private?BufferedImage?tempImage;
private?BufferedImage?backupImage;
private?InfoPanel?infoPanel;
private?OperateHistoryPanel?opPanel;
private?static?Robot?robot?=?null;
private?File?file?=?null;
private?int?w?=?480;
private?int?h?=?360;
static?{
try?{
robot?=?new?Robot（）;
}?catch?（AWTException?e1）?{
e1.printStackTrace（）;
}
}
public?DrawingBoardPanel（）?{
super（）;
paletteSteps?=?new?ArrayList（maxStepCounts）;
this.setPreferredSize（new?Dimension（w?h））;
this.addMouseListener（this）;
this.addMouseMotionListener（this）;
backupImage?=?new?BufferedImage（w?h?BufferedImage.TYPE_INT_RGB）;
Graphics2D?g2?=?（Graphics2D）?backupImage.getGraphics（）;
g2.setColor（Color.WHITE）;
g2.fillRect（0?0?w?h）;
}
public?DrawingBoardPanel（File?file）?{
super（）;
if?（file?!=?null?&&?file.exists（））?{
this.file?=?file;
try?{
backupImage?=?ImageIO.read（file）;
w?=?backupImage.getWidth（）;
h?=?backupImage.getHeight（）;
}?catch?（IOException?e）?{
e.printStackTrace（）;
backupImage?=?null;
}
}
this.setPreferredSize（new?Dimension（w?h））;
paletteSteps?=?new?ArrayList（maxStepCounts）;
this.addMouseListener（this）;
this.addMouseMotionListener（this）;
}
public?void?save（）?{
save（file）;
}
public?void?save（File?file）?{
BufferedImage?savedImage?=?new?BufferedImage（w?h
BufferedImage.TYPE_INT_RGB）;
Graphics2D?g?=?（Graphics2D）?savedImage.getGraphics（）;
if?（stepCounts?==?0）
g.drawImage（backupImage?0?0?null）;
else
g.drawImage（tempImage?0?0?null）;
for?（int?i?=?0;?i? paletteSteps.get（i）.draw（g）;
}
try?{
ImageIO.write（savedImage?“jpg“?file）;
}?catch?（IOException?e）?{
e.printStackTrace（）;
}
}
public?void?back（int?steps）?{
if?（0?<=?steps?&&?steps? stepCounts?=?steps;
repaint（）;
}
}
public?void?setThisPaletteTool（PaletteTool?tool）?{
this.thisPaletteTool?=?tool;
}
public?void?setInfoPanel ?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件??????????0??2015-05-14?13:32??大作業--畫圖板\.me
?????文件?????250993??2015-05-19?16:17??大作業--畫圖板\.me
?????文件?????????20??2015-05-14?13:33??大作業--畫圖板\.me
?????文件?????????32??2015-05-14?13:33??大作業--畫圖板\.me
?????文件????????250??2015-05-17?23:54??大作業--畫圖板\.me
?????文件????????438??2015-05-14?13:34??大作業--畫圖板\.me
?????文件????????250??2015-05-18?00:15??大作業--畫圖板\.me
?????文件???????4855??2015-05-16?04:07??大作業--畫圖板\.me
?????文件????????360??2015-05-17?04:32??大作業--畫圖板\.me
?????文件????????976??2015-05-15?20:37??大作業--畫圖板\.me
?????文件?????????78??2015-05-17?00:07??大作業--畫圖板\.me
?????文件???????1694??2015-05-17?02:21??大作業--畫圖板\.me
?????文件????????164??2015-05-16?14:13??大作業--畫圖板\.me
?????文件???????2237??2015-05-17?00:43??大作業--畫圖板\.me
?????文件???????1306??2015-05-16?02:31??大作業--畫圖板\.me
?????文件???????1059??2015-05-16?01:23??大作業--畫圖板\.me
?????文件???????2815??2015-05-17?15:57??大作業--畫圖板\.me
?????文件???????2033??2015-05-15?15:26??大作業--畫圖板\.me
?????文件????????585??2015-05-16?15:34??大作業--畫圖板\.me
?????文件??????10013??2015-05-17?17:55??大作業--畫圖板\.me
?????文件???????2168??2015-05-14?21:46??大作業--畫圖板\.me
?????文件???????4231??2015-05-17?23:04??大作業--畫圖板\.me
?????文件???????1832??2015-05-17?13:49??大作業--畫圖板\.me
?????文件???????2653??2015-05-17?16:01??大作業--畫圖板\.me
?????文件????????735??2015-05-16?01:26??大作業--畫圖板\.me
?????文件???????2249??2015-05-15?15:57??大作業--畫圖板\.me
?????文件??????????0??2015-05-16?14:08??大作業--畫圖板\.me
?????文件???????2024??2015-05-15?15:25??大作業--畫圖板\.me
?????文件????????584??2015-05-17?00:52??大作業--畫圖板\.me
?????文件??????12905??2015-05-17?04:18??大作業--畫圖板\.me
............此處省略3156個文件信息
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