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This article is about how to carry out the DragChartPanel draggable curve application, the editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.

DragChartPanel is an open source component for graphical representation in the java cs architecture.

Business requirements require the use of DragChartPanel, a graphical component that is presented based on the data in the jtable table. It is different from other graphic components and can be dragged, through which users can not only see the curve of data changes, but also modify the data in the table by dragging and dropping.

Here is a picture of its effect:

Ugly back to ugly, but it's very practical.

The code is shown below.

Initialize the coordinate grid:

Chartpanel1 = new DragChartPanel (this); chartpanel1.setXtitle ("time"); chartpanel1.setYtitle ("MW"); chartpanel1.setDragLabel (jLabel1); chartpanel1.setTm ((DefaultTableModel) jTable1.getModel ()); chartpanel1.setStartRow (0); chartpanel1.setChartPanel (jPanel11)

Draw the curve:

Private void drawGraph (int col) {jLabel1.setText ("); int count = jTable1.getRowCount (); String [] [] chartData1 = new String [1] [count]; String [] chartIndex = new String [count]; DefaultTableModel tm = (DefaultTableModel) jTable1.getModel (); for (int I = 0; I)

< tm.getRowCount(); i++) { chartIndex[i] = tm.getValueAt(i, 0) == null ? "" : tm.getValueAt(i, 0).toString(); chartData1[0][i] = tm.getValueAt(i, col) == null ? "" : tm.getValueAt(i, col).toString(); } if (chartpanel1 != null) { chartpanel1.setEditColumn(col); chartpanel1.setData(chartData1); chartpanel1.setXLab(chartIndex); chartpanel1.setTitle(tm.getColumnName(col)); chartpanel1.setLs_linename(new String[]{tm.getColumnName(col)}); chartpanel1.getChart(); } } 这个组件有一个缺点。只支持对列进行修改，这是这个组件的一个特点（拖动曲线表格的列会发生改动）。为了使用它，很多表的结构就不得不迎合这一缺点。 例如如下表结构： 都是按列展示的。对于有些情况很不合理！如何解决（思考中。。。。。。） 上面思考的问题解决了！！！ 源码中有这样一个字段： 再使用的过程中会出现如下情况： 这个时候你get哪个model就无所谓了，为了避免影响，随便弄一样不会发生改变的model吧。 这样，拖动曲线的时候，label的值会实时显示曲线的坐标。 那么，给上面的label 加一个监听，改变值的时候，将label的内容用"："分割开，不刚好是x轴和y轴的值了吗？ 对应横向表格中，直接再label监听事件中就可以更改table的值。（完美！！！） 注意一下：有时拖动x轴的坐标是很详细很详细的数据移动，是因为你选这了setIndex而不是setXLab private void initChartline() { //填充 图形 String[][] ChartData = new String[1][24]; String[] ChartIndex = new String[24]; if (fixTable.getRowCount() >

0) {for (int I = 0; I

< dataTable.getColumnCount() - 2; i++) { ChartIndex[i] = String.valueOf(i); ChartData[0][i] = dataTable.getValueAt(fixtable_sld, i) == null ? "" : dataTable.getValueAt(fixtable_sld, i).toString(); } if (dchartpanel_1 != null) { //String pdate = (String) fixTable.getValueAt(fixTable.getSelectedRow(), 3); dchartpanel_1.setLs_linename(new String[]{"联络线曲线" + "ceshi1" + "（MW）"}); dchartpanel_1.setLcol(Lcol); dchartpanel_1.setXLab(ChartIndex);//setXLab 和setIndex的区别在于，setXLab拖动取值x轴是按照下标取值的，而setIndex则是拖动的位置，常常不是整数，推荐用前者 dchartpanel_1.setData(ChartData); //dchartpanel_1.setIndex(ChartIndex); dchartpanel_1.getChart(); } } } //曲线颜色 private java.awt.Color[] Lcol = { java.awt.Color.red, java.awt.Color.blue, java.awt.Color.blue}; 它的源码： /* * To change this template, choose Tools | Templates * and open the template in the editor. */package com.qctc.view.common.frame.pub; import com.qctc.common.util.period;import com.qctc.common.Constant;import com.qctc.view.common.frame.BaseSubTabModule;import com.qctc.view.common.frame.pub.datasysgraphdrag.datasysgraph;import java.awt.BorderLayout;import java.awt.Color;import java.awt.Container;import java.awt.Dimension;import javax.swing.JLabel;import javax.swing.JPanel;import javax.swing.table.DefaultTableModel; /** * * @author Administrator */public class DragChartPanel { private java.awt.Color[] Lcol = Constant.Lcol; private Color bgcolor = new Color(204, 204, 255);//背景色 private Color rectcolor = Color.white;//图形矩形内颜色 public DragChartPanel(BaseSubTabModule parentModule, Color bgcolor, Color rectcolor) { this.bgcolor = bgcolor; this.rectcolor = rectcolor; this.parentModule = parentModule; initChartPanel(); } public DragChartPanel(BaseSubTabModule parentModule) { this.parentModule = parentModule; initChartPanel(); } public DragChartPanel() { initChartPanel(); } public void initChartPanel() { //设置是否翻页 chart.setMutiPage(false); chart.setConvertBool(true); //设置底色 chart.setBackColor(bgcolor);// chart.setBackColor(new Color(192,192,192)); //设置图形区域的边框颜色 chart.setBorderColor(Color.red); //设置图形区域的底色// chart.setChartRectColor(new Color(204, 204, 250)); // if(Constant.SYSTEM_AREA.equals("山西")){ chart.setChartRectColor(rectcolor);// chart.setChartRectColor(new Color(74,74,107));// } //设置xy坐标轴颜色 chart.setXyColor(new Color(30, 30, 30)); //设置标题颜色 chart.setTitleColor(new Color(30, 30, 30)); //设置网格颜色 chart.setGridColor(new Color(50, 180, 180)); //设置是否显示网格 1 显示 其他不显示 chart.setShowHidegrid(1); //设置显示点的大小// chart.setShowHidep(0);// if (Constant.SYSTEM_AREA.equals("山西")) { chart.setShowHidep(1);// } //鼠标移动曲线上是否自动显示横纵坐标十字线 chart.setshowCrossLine(true); //设置鼠标移动曲线显示的十字线颜色 chart.setCrossLineColor(new Color(150, 180, 150)); //设置曲线类型：0 连续的曲线 3只显示点 chart.setLineType(0); //设置鼠标提示框框边颜色 chart.setLwBorderColor(Color.red); //设置鼠标显示提示框底色 chart.setLwColor(Color.yellow); //设置鼠标显示提示框提示字的颜色 chart.setLwTextColor(Color.white); //设置横竖网格线条数 chart.setXzPoints(9); chart.setYzPoints(10); chartpanel.setLayout(new BorderLayout()); chartpanel.add(getChart(), java.awt.BorderLayout.CENTER); chart.addMouseListener(new java.awt.event.MouseAdapter() { public void mousePressed(java.awt.event.MouseEvent evt) { dragState = true; } public void mouseReleased(java.awt.event.MouseEvent evt) { dragState = false; } }); } public boolean isDragState() { return dragState; } private boolean dragState = false; protected BaseSubTabModule parentModule; private JPanel chartpanel = new JPanel(); // private datasysgraph chart = new datasysgraph(); //图形参数 private double maxv = -999999999, minv = 999999999; private boolean maxv_zd = true; private boolean minv_zd = true; private String[][] data = null; private String[] ls_linename = null; private String title = ""; private String xtitle = ""; private String ytitle = ""; private int xpoints = 12; private int xmax = 96; private int xmin = 0; private String[] index = null; private int EditColumn = 0;//拖动关联列 private int StartRow = 0;//拖动起始行 private JLabel DragLabel = null;//关联table private DefaultTableModel tm = null;//关联的tm private boolean sftd = true; private int ShowLabelCol = -1; private int[] LineShowLabelCols; public void setSftd(boolean sftd) { this.sftd = sftd; } public void setShowLabelCol(int ShowLabelCol) { this.ShowLabelCol = ShowLabelCol; } public void setLineShowLabelCols(int[] LineShowLabelCols) { this.LineShowLabelCols = LineShowLabelCols; } public void setTm(DefaultTableModel tm) { this.tm = tm; } public void setDragLabel(JLabel DragLabel) { this.DragLabel = DragLabel; } public void setEditColumn(int EditColumn) { this.EditColumn = EditColumn; } public void setStartRow(int StartRow) { this.StartRow = StartRow; } public void setXtitle(String xtitle) { this.xtitle = xtitle; } public void setYtitle(String ytitle) { this.ytitle = ytitle; } public void setIndex(String[] index) { this.index = index; } public void setData(String[][] data) { this.data = data; } public void setLs_linename(String[] ls_linename) { this.ls_linename = ls_linename; } public void setTitle(String title) { this.title = title; } public datasysgraph getChart() { try { createChart(); return chart; } catch (Exception e) { e.printStackTrace(); return null; } } public datasysgraph getChartByColor(Color[] col) { try { createChartByColor(col); return chart; } catch (Exception e) { e.printStackTrace(); return null; } } /** * 设置chart要加入的JPanel * @param panel */ public void setChartPanel(JPanel panel) { Container parent = chartpanel.getParent(); if (parent != null) { parent.removeAll(); } panel.add(chartpanel); panel.setMinimumSize(new Dimension(300, 100)); } private void createChart() { setMaxMin(this.data); setPara(); setDragPara(); setXY(); buildChart(); } private void createChartByColor(Color[] col) { setMaxMin(this.data); setPara(); setDragPara(); setXY(); buildChartByColor(col); } /** * 生成图 */ private void buildChart() { try { if (this.data != null) { int len = this.data.length; for (int i = 0; i < len; i++) { chart.AddItem(ls_linename[i], data[i].length, this.Lcol[i]); chart.setPointValue(ls_linename[i], this.index, this.data[i]); } chart.refresh(); } } catch (Exception e) { e.printStackTrace(); } } /** * 生成图 */ private void buildChartByColor(Color[] col) { try { if (this.data != null) { int len = this.data.length; for (int i = 0; i < len; i++) { chart.AddItem(ls_linename[i], data[i].length, col[i]); chart.setPointValue(ls_linename[i], this.index, this.data[i]); } chart.refresh(); } } catch (Exception e) { e.printStackTrace(); } } /** * 设置参数 */ private void setPara() { try { chart.ClearAll(); chart.setTitle(this.title); chart.setLtitlex(this.xtitle); chart.setLtitley(this.ytitle); chart.setMutiPage(false); chart.setYbzzb(this.getMaxv(), this.getMinv()); chart.setShowLabelCol(ShowLabelCol); chart.setLineShowLabelCols(LineShowLabelCols); } catch (Exception e) { e.printStackTrace(); } } private void setDragPara() { // 拖动数据列设置 chart.setEditColumn(this.EditColumn); // 拖动起始行设置 chart.setStartIndex(this.StartRow); chart.setJlabel(this.DragLabel); // 是否 实现拖动 设置 chart.setIsDrag(this.sftd); chart.setTableDataModel(this.tm); } private String[] XLab = null; /** * 设置 图形x轴标签 * @param XLab */ public void setXLab(String[] XLab) { this.XLab = XLab; } public void setXpoints(int xpoints) { this.xpoints = xpoints; } /** * x轴显示坐标间隔点数 */ private int XTabN = 10; /** * 设置xy轴 */ private void setXY() { try { chart.setXzPoints(this.xpoints);//x轴 分割线 chart.setXmin(this.xmin); if (XLab == null) { chart.setXmax(this.xmax); this.xpoints = 12; period period1 = new period(); String[] ls_pd = new String[97]; for (int i = 0; i < 96; i++) { ls_pd[i] = period1.getPeriod()[i]; } ls_pd[96] = "24:00"; for (int i = 0; i getMaxv()) { this.maxv = maxdd; } } catch (Exception e1) { e1.printStackTrace(); } } } } } } catch (Exception e) { e.printStackTrace(); } if (getMaxv() == -999999999) { this.maxv = 100; } else { if (getMaxv() >

0) {this.maxv = getMaxv () * 1.05;} else {this.maxv = getMaxv () * 0.95;} if (this.minv_zd) {this.minv = 999999999; try {if (data! = null) {for (int I = 0; I)

< data.length; i++) { for (int j = 0; j < data[i].length; j++) { if (data[i][j] != null && !data[i][j].equals("")) { try { double mindd = Double.parseDouble( (data[i][j] == null || "null".equals(data[i][j]) || "".equals(data[i][j])) ? "0" : data[i][j]); if (mindd < getMinv()) { this.minv = mindd; } } catch (Exception e1) { e1.printStackTrace(); } } } } } } catch (Exception e) { e.printStackTrace(); } if (getMinv() == 999999999) { this.minv = 0; } else { if (getMinv() >

0) {this.minv = getMinv () * 0.95;} else {this.minv = getMinv () * 1.05;} / * @ return the Lcol * / public java.awt.Color [] getLcol () {return Lcol;} / * * @ param Lcol the Lcol to set * / public void setLcol (java.awt.Color [] Lcol) {this.Lcol = Lcol } / * * @ return the maxv * / public double getMaxv () {return maxv;} / * * @ param maxv the maxv to set * / public void setMaxv (double maxv) {this.maxv = maxv; this.maxv_zd = false;} / * * @ return the minv * / public double getMinv () {return minv;} / * * @ param minv the minv to set * / public void setMinv (double minv) {this.minv = minv; this.minv_zd = false } / * returns modified curve data * 2013-04-08 hwh * @ return * / public double [] getGraphDataY () {return chart.getGraphDataY ();}}

The above is how to apply DragChartPanel draggable curves. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.

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