paintbrush.txt

java编画图软件

				g2d.draw( new Line2D.Double( 0, 0, 12, 12 ) );
				g2d.draw( new Line2D.Double( 11, 0, 0, 11 ) );
				repaint();
					
				if(e.getButton()==1)
					color_border=null;
				else
					color_inside=null;
			}
			else if(choose==29){//填充间层
				jDialog.show();
				
				g2d.setPaint( new GradientPaint( 0, 0, center.G_color_left, 12, 12, center.G_color_right, true ) );
				g2d.fill( new Rectangle2D.Double( 0, 0, 12, 12 ) );
				repaint();
				
				if(e.getButton()==1)
					color_border=new GradientPaint( 0, 0, center.G_color_left, 12, 12, center.G_color_right, true );
				else
					color_inside=new GradientPaint( 0, 0, center.G_color_left, 12, 12, center.G_color_right, true );
			}
			else if(choose==30){//填充图案
				FileDialog fileDialog = new FileDialog( new Frame() , "选择一个文件", FileDialog.LOAD );//利用FileDialog抓取文件名
				fileDialog.show();//出视窗
				if(fileDialog.getFile()==null) return;//按取消的处理
				
				g2d.drawImage(special_color[2].getImage(), 0, 0,this);//把调色盘左边变为图片
				
				icon = new ImageIcon(fileDialog.getDirectory()+fileDialog.getFile());//利用FileDialog传进来的文件名读取图片
				BufferedImage bufferedImage = new BufferedImage(icon.getIconWidth(),icon.getIconHeight(),BufferedImage.TYPE_3BYTE_BGR);//创一张新的BufferedImage，为了要读取娶进来的图片长宽，以免有空白
				bufferedImage.createGraphics().drawImage(icon.getImage(),0,0,this);//把icon画到BufferedImage上
				repaint();//重绘画板
				
				if(e.getButton()==1)//判断边线颜色或内部是否填满色
					color_border=new TexturePaint(bufferedImage, new Rectangle( icon.getIconWidth(), icon.getIconHeight() ) );//把这张張BufferedImage设成TexturePaint来填满
				else
					color_inside=new TexturePaint(bufferedImage, new Rectangle( icon.getIconWidth(), icon.getIconHeight() ) );
			}
			else if(choose==31){//填充文字
				String text=JOptionPane.showInputDialog("请输入文字","文字");//熟入文字
				if(text==null) return;//按取消时的处理
				
				Color FontColor=new Color(0,0,0);//改字的颜色
				FontColor = JColorChooser.showDialog( Painter.this, "请选择一个颜色当文字颜色", FontColor );//请使用者选择颜色
				
				g2d.drawImage(special_color[3].getImage(), 0, 0,this);//把调色盘左方换成『字』
				
				BufferedImage bufferedImage = new BufferedImage(draw_panel_width,draw_panel_height,BufferedImage.TYPE_3BYTE_BGR);//创一张新的BufferedImage
				Graphics2D g2d_bufferedImage = bufferedImage.createGraphics();//把Graphics拿出來画
				
				FontRenderContext frc = g2d_bufferedImage.getFontRenderContext();//读Graphics中的Font
				Font f = new Font("新细明体",Font.BOLD,10);//新Font
				TextLayout tl = new TextLayout(text, f, frc);//创新的TextLayout，并利用f(Font)跟画到frc(FontRenderContext)
				
				int sw = (int) (tl.getBounds().getWidth()+tl.getCharacterCount());//计算TextLayout的长
				int sh = (int) (tl.getBounds().getHeight()+3);//计算TextLayout的高
				
				bufferedImage = new BufferedImage(sw,sh,BufferedImage.TYPE_3BYTE_BGR);//再创一张新的BufferedImage，这里利用相同指标指向不同记忆体
				g2d_bufferedImage = bufferedImage.createGraphics();//拿出Graphics來画，前一張BufferedImage只是为了计算文字长度与高度，这样才能完整填满
				
				g2d_bufferedImage.setPaint(Color.WHITE);//设定颜色为白色
				g2d_bufferedImage.fill(new Rectangle(0,0,sw,sh));//画一个填满矩形白色矩型
				g2d_bufferedImage.setPaint(FontColor);//设定颜色为之前选择文字颜色
				g2d_bufferedImage.drawString(text,0,10);//画一個String于BufferedImage上
				repaint();//更新画面
				
				if(e.getButton()==1)//判断边线颜色或内部是否填满色
					color_border=new TexturePaint(bufferedImage, new Rectangle(sw,sh) );//把这张BufferedImage设成TexturePaint來填滿来填满
				else
					color_inside=new TexturePaint(bufferedImage, new Rectangle(sw,sh) );
			}
			else{//填充一般色
				g2d.setPaint(new Color(rgb[0][choose],rgb[1][choose],rgb[2][choose]));
				g2d.fill( new Rectangle2D.Double( 0, 0, 12, 12 ) );
				repaint();
				
				if(e.getButton()==1)
					color_border=new Color(rgb[0][choose],rgb[1][choose],rgb[2][choose]);
				else
					color_inside=new Color(rgb[0][choose],rgb[1][choose],rgb[2][choose]);
			}
		}

		public void mouseReleased( MouseEvent e ){}
		public void mouseEntered( MouseEvent e ){}
		public void mouseExited( MouseEvent e ){}
	}
	
	public class DrawPanel extends JPanel implements MouseListener, MouseMotionListener, ItemListener, ActionListener, ChangeListener{//中央畫布
		public BufferedImage bufImg;//记录最新画面，並在此上作画
		private BufferedImage bufImg_data[];//记录所有画出图面，索引值越大越新，最大为最新
		private BufferedImage bufImg_cut;
		private ImageIcon img;
		private JLabel jlbImg;
		private int x1=-1,y1=-1,x2,y2,count,redo_lim,press,temp_x1,temp_y1,temp_x2,temp_y2,temp_x3,temp_y3,step,step_chk,step_arc,step_chk_arc,chk,first,click,cut;
		private Arc2D.Double arc2D = new Arc2D.Double();//扇型
		private Line2D.Double line2D = new Line2D.Double();//直线
		private Ellipse2D.Double ellipse2D = new Ellipse2D.Double();//椭圆
		private Rectangle2D.Double rectangle2D = new Rectangle2D.Double();//矩型
		private CubicCurve2D.Double cubicCurve2D = new CubicCurve2D.Double();//贝氏曲线
		private RoundRectangle2D.Double roundRectangle2D = new RoundRectangle2D.Double();//圆角矩型
		private Polygon polygon;//多边型
		private float data[]={5};
		private Rectangle2D.Double rectangle2D_select = new Rectangle2D.Double();//矩型
		private Ellipse2D.Double ellipse2D_pan = new Ellipse2D.Double();
		private BasicStroke basicStroke_pen = new BasicStroke(1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_MITER);
		private BasicStroke basicStroke_select = new BasicStroke(1, BasicStroke.CAP_ROUND, BasicStroke.JOIN_MITER,10, data, 0);
		private double center_point_x;
		private double center_point_y;
		private double start;
		private double end;
		public String filename;
		private JTextField textField_font = new JTextField("Fixedsys",16), textField_word = new JTextField("JAVA",16);
		private int size=100;
		private JSpinner fontsize = new JSpinner();
		private JDialog jDialog;
		private JCheckBox bold, italic;
		private JButton ok, cancel;
		public int pie_shape=Arc2D.PIE;
		private int valBold = Font.BOLD;
		private int valItalic = Font.ITALIC;
		private int select_x,select_y,select_w,select_h;
		
		public void resize(){//改变大小
			bufImg = new BufferedImage(draw_panel_width, draw_panel_height,BufferedImage.TYPE_3BYTE_BGR);
			jlbImg = new JLabel(new ImageIcon(bufImg));//在JLabel上放置bufImg，用来绘图
			this.removeAll();
			this.add(jlbImg);
			jlbImg.setBounds(new Rectangle(0, 0, draw_panel_width, draw_panel_height));
			
    		//画出原本图形//
    		Graphics2D g2d_bufImg = (Graphics2D) bufImg.getGraphics();
    		g2d_bufImg.setPaint(Color.white);
    		g2d_bufImg.fill(new Rectangle2D.Double(0,0,draw_panel_width,draw_panel_height));
    		g2d_bufImg.drawImage(bufImg_data[count],0,0,this);

			//记录可重做最大次数，并让重做不可按//
			redo_lim=count++;
			jMenuItem[1][1].setEnabled(false);
			
   			//新增一张BufferedImage形态至bufImg_data[count]，并将bufImg绘制至bufImg_data[count]//
   			bufImg_data[count] = new BufferedImage(draw_panel_width, draw_panel_height, BufferedImage.TYPE_3BYTE_BGR);
   			Graphics2D g2d_bufImg_data = (Graphics2D) bufImg_data[count].getGraphics();
   			g2d_bufImg_data.drawImage(bufImg,0,0,this);
   			
			//判断坐标为新起点//
			press=0;
			
			//让复原MenuItem可以点选//
   			if(count>0)
   				jMenuItem[1][0].setEnabled(true);
		}
		
		public DrawPanel() {
			bufImg_data = new BufferedImage[1000];
			bufImg = new BufferedImage(draw_panel_width, draw_panel_height,BufferedImage.TYPE_3BYTE_BGR);
			jlbImg = new JLabel(new ImageIcon(bufImg));//在JLabel上放置bufImg，用來绘图

			this.setLayout(null);
			this.add(jlbImg);
			jlbImg.setBounds(new Rectangle(0, 0, draw_panel_width, draw_panel_height));
			
		 	jMenuItem[1][0].setEnabled(false);
    		jMenuItem[1][1].setEnabled(false);
    		jMenuItem[1][2].setEnabled(false);
    		jMenuItem[1][3].setEnabled(false);
    		jMenuItem[1][4].setEnabled(false);
    		
    		//画出空白//
    		Graphics2D g2d_bufImg = (Graphics2D) bufImg.getGraphics();
    		g2d_bufImg.setPaint(Color.WHITE);
			g2d_bufImg.fill(new Rectangle2D.Double(0,0,draw_panel_width,draw_panel_height));
			
    		bufImg_data[count] = new BufferedImage(draw_panel_width, draw_panel_height, BufferedImage.TYPE_3BYTE_BGR);
    		Graphics2D g2d_bufImg_data = (Graphics2D) bufImg_data[count].getGraphics();
    		g2d_bufImg_data.drawImage(bufImg,0,0,this);
			
			//Font//
			jDialog = new JDialog(Painter.this, "请选择文字、字型、大小与属性", true);
			fontsize.setValue(new Integer(100));
			bold = new JCheckBox( "粗体" ,true);
			italic = new JCheckBox( "斜体" ,true);
			ok = new JButton("确定");
			cancel = new JButton("取消");
			JPanel temp_0 = new JPanel(new GridLayout(5,1));
			JPanel temp_1 = new JPanel(new FlowLayout(FlowLayout.LEFT));
			JPanel temp_2 = new JPanel(new FlowLayout(FlowLayout.LEFT));
			JPanel temp_3 = new JPanel(new FlowLayout(FlowLayout.LEFT));
			JPanel temp_4 = new JPanel(new FlowLayout());
			JPanel temp_5 = new JPanel(new FlowLayout(FlowLayout.LEFT));
			Container jDialog_c = jDialog.getContentPane();
				
        	jDialog_c.setLayout(new FlowLayout());
        	jDialog.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE );
        	jDialog.setSize(250, 200);
        	temp_5.add(new JLabel("文字:"));
			temp_5.add(textField_word);
			temp_1.add(new JLabel("字体:"));
			temp_1.add(textField_font);
			temp_2.add(new JLabel("大小:"));
			temp_2.add(fontsize);
			temp_3.add(new JLabel("属性:"));
			temp_3.add(bold);
			temp_3.add(italic);
			temp_4.add(ok);
			temp_4.add(cancel);
			temp_0.add(temp_5);
			temp_0.add(temp_1);
        	temp_0.add(temp_2);
        	temp_0.add(temp_3);
        	temp_0.add(temp_4);
        	jDialog_c.add(temp_0);
        	
        	bold.addItemListener( this );
        	italic.addItemListener( this );
        	fontsize.addChangeListener( this );
        	ok.addActionListener(this);
        	cancel.addActionListener(this);
        	temp_0.setPreferredSize(new Dimension( 180 , 150 ));
        	
			repaint();
    		addMouseListener(this);
    		addMouseMotionListener(this);
		}
		public void stateChanged(ChangeEvent e){
			size = Integer.parseInt(fontsize.getValue().toString());
			if(size <= 0) {
				fontsize.setValue(new Integer(1));
				size = 1;
			}
		}
		
		public void actionPerformed( ActionEvent e ){
			jDialog.dispose();
		}
		public void itemStateChanged( ItemEvent e ){
			if ( e.getSource() == bold )
				if ( e.getStateChange() == ItemEvent.SELECTED )
					valBold = Font.BOLD;
				else
					valBold = Font.PLAIN;
			if ( e.getSource() == italic )
				if ( e.getStateChange() == ItemEvent.SELECTED )
					valItalic = Font.ITALIC;
				else
					valItalic = Font.PLAIN;
		}
		
		public Dimension getPreferredSize(){
			return new Dimension( draw_panel_width, draw_panel_height );
		}
		
		public void openfile(String filename){//开放旧文件
			Graphics2D g2d_bufImg = (Graphics2D) bufImg.getGraphics();
			ImageIcon icon = new ImageIcon(filename);
			g2d_bufImg.drawImage(icon.getImage(),0,0,this);
			
			count++;
    		bufImg_data[count] = new BufferedImage(draw_panel_width, draw_panel_height, BufferedImage.TYPE_3BYTE_BGR);
    		Graphics2D g2d_bufImg_data = (Graphics2D) bufImg_data[count].getGraphics();
    		g2d_bufImg_data.drawImage(bufImg,0,0,this);
			
			repaint();
		}
		
		public void undo(){//复原
   			count--;
			
   			draw_panel_width=bufImg_data[count].getWidth();
   			draw_panel_height=bufImg_data[count].getHeight();
   			drawPanel.setSize(draw_panel_width,draw_panel_height);

			bufImg = new BufferedImage(draw_panel_width, draw_panel_height,BufferedImage.TYPE_3BYTE_BGR);
			jlbImg = new JLabel(new ImageIcon(bufImg));//在JLabel上放置bufImg，用來绘图
			this.removeAll();
			this.add(jlbImg);
			jlbImg.setBounds(new Rectangle(0, 0, draw_panel_width, draw_panel_height));
			
			Graphics2D g2d_bufImg = (Graphics2D) bufImg.getGraphics();
    		g2d_bufImg.setPaint(Color.white);
    		g2d_bufImg.fill(new Rectangle2D.Double(0,0,draw_panel_width,draw_panel_height));
			g2d_bufImg.drawImage(bufImg_data[count],0,0,this);

			underDrawPanel.ctrl_area.setLocation(draw_panel_width+3,draw_panel_height+3);
			underDrawPanel.ctrl_area2.setLocation(draw_panel_width+3,draw_panel_height/2+3);
			underDrawPanel.ctrl_area3.setLocation(draw_panel_width/2+3,draw_panel_height+3);
			
			underDrawPanel.x=draw_panel_width;
			underDrawPanel.y=draw_panel_height;
			
	   		if(count<=0)
	   			jMenuItem[1][0].setEnabled(false);
	    	jMenuItem[1][1].setEnabled(true);
	    	cut=3;
   			repaint();
   		}

		public void redo(){//重做
			count++;
			
   			draw_panel_width=bufImg_data[count].getWidth();
   			draw_panel_height=bufImg_data[count].getHeight();
   			drawPanel.setSize(draw_panel_width,draw_panel_height);

			bufImg = new BufferedImage(draw_panel_width, draw_panel_height,BufferedImage.TYPE_3BYTE_BGR);
			jlbImg = new JLabel(new ImageIcon(bufImg));//在JLabel上放置bufImg，用來绘图
			this.removeAll();
			this.add(jlbImg);
			jlbImg.setBounds(new Rectangle(0, 0, draw_panel_width, draw_panel_height));
			
			Graphics2D g2d_bufImg = (Graphics2D) bufImg.getGraphics();
    		g2d_bufImg.setPaint(Color.white);
    		g2d_bufImg.fill(new Rectangle2D.Double(0,0,draw_panel_width,draw_panel_height));
			g2d_bufImg.drawImage(bufImg_data[count],0,0,this);

			underDrawPanel.ctrl_area.setLocation(draw_panel_width+3,draw_panel_height+3);
			underDrawPanel.ctrl_area2.setLocation(draw_panel_width+3,draw_panel_height/2+3);
			underDrawPanel.ctrl_area3.setLocation(draw_panel_width/2+3,draw_panel_height+3);
			
			underDrawPanel.x=draw_panel_width;
			underDrawPanel.y=draw_panel_height;
			
			if(redo_lim<count)
				jMenuItem[1][1].setEnabled(false);
			jMenuItem[1][0].setEnabled(true);
			cut=3;
   			repaint();
   		}
		
		public void cut(){
			bufImg_cut = new BufferedImage((int)rectangle2D_select.getWidth(), (int)rectangle2D_select.getHeight(), BufferedImage.TYPE_3BYTE_BGR);
			BufferedImage copy = bufImg.getSubimage((int)rectangle2D_select.getX(),(int)rectangle2D_select.getY(),(int)rectangle2D_select.getWidth(),(int)rectangle2D_select.getHeight());
			Graphics2D g2d_bufImg_cut = (Graphics2D) bufImg_cut.createGraphics();
			g2d_bufImg_cut.drawImage(copy,0,0,this);
			
    		Graphics2D g2d_bufImg = (Graphics2D) bufImg.getGraphics();