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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 17 | reyssat | 1 | /* Copyright (C) 1998 XIAO, Gang of Universite de Nice - Sophia Antipolis |
| 2 | * |
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| 3 | * This program is free software; you can redistribute it and/or modify |
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| 4 | * it under the terms of the GNU General Public License as published by |
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| 5 | * the Free Software Foundation; either version 2 of the License, or |
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| 6 | * (at your option) any later version. |
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| 7 | * |
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| 8 | * This program is distributed in the hope that it will be useful, |
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| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 11 | * GNU General Public License for more details. |
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| 12 | * |
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| 13 | * You should have received a copy of the GNU General Public License |
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| 14 | * along with this program; if not, write to the Free Software |
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| 15 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 16 | */ |
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| 17 | |||
| 18 | import java.awt.event.*; |
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| 19 | import java.awt.*; |
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| 20 | import java.applet.*; |
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| 21 | import java.net.*; |
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| 22 | import java.applet.*; |
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| 23 | import java.util.Vector; |
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| 24 | |||
| 25 | public class input extends Applet{ |
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| 26 | inp_panel panel; |
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| 27 | inp_controls controls; |
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| 28 | Image bg; |
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| 29 | Color bgcolor; |
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| 30 | String replystring; |
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| 31 | public static String prompt="OK"; |
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| 32 | public static String retry="Erase"; |
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| 33 | URL backurl; |
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| 34 | |||
| 35 | public void init() { |
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| 36 | URL url; |
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| 37 | String parmstr; |
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| 38 | parmstr=getParameter("type"); |
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| 39 | if(parmstr!=null && parmstr.length()>0) { |
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| 40 | parmstr.toLowerCase(); parmstr.trim(); |
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| 41 | if(parmstr.compareTo("curve")==0) inp_panel.ctype=inp_panel.CURVE; |
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| 42 | if(parmstr.compareTo("rectangle")==0) inp_panel.ctype=inp_panel.RECT; |
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| 43 | if(parmstr.compareTo("rect")==0) inp_panel.ctype=inp_panel.RECT; |
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| 44 | if(parmstr.compareTo("circle")==0) inp_panel.ctype=inp_panel.CIRCLE; |
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| 45 | if(parmstr.compareTo("lines")==0) inp_panel.ctype=inp_panel.LINES; |
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| 46 | if(parmstr.compareTo("segments")==0) inp_panel.ctype=inp_panel.LINES; |
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| 47 | if(parmstr.compareTo("line")==0) inp_panel.ctype=inp_panel.LINE; |
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| 48 | if(parmstr.compareTo("sline")==0) inp_panel.ctype=inp_panel.SLINE; |
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| 49 | if(parmstr.compareTo("semiline")==0) inp_panel.ctype=inp_panel.SLINE; |
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| 50 | if(parmstr.compareTo("seg")==0) inp_panel.ctype=inp_panel.SEG; |
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| 51 | if(parmstr.compareTo("segment")==0) inp_panel.ctype=inp_panel.SEG; |
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| 52 | if(parmstr.compareTo("poly")==0) inp_panel.ctype=inp_panel.POLY; |
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| 53 | if(parmstr.compareTo("polygon")==0) inp_panel.ctype=inp_panel.POLY; |
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| 54 | if(parmstr.compareTo("points")==0) inp_panel.ctype=inp_panel.POINTS; |
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| 55 | if(parmstr.compareTo("vec")==0) inp_panel.ctype=inp_panel.VEC; |
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| 56 | if(parmstr.compareTo("vector")==0) inp_panel.ctype=inp_panel.VEC; |
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| 57 | } |
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| 58 | |||
| 59 | parmstr=getParameter("background"); |
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| 60 | if (parmstr!=null && parmstr.length()>0) { |
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| 61 | try {url=new URL(parmstr);} |
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| 62 | catch (MalformedURLException e) {url=null;} |
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| 63 | if(url!=null) bg=getImage(url); |
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| 64 | else bg=null; |
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| 65 | } |
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| 66 | else bg=null; |
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| 67 | |||
| 68 | parmstr=getParameter("bgcolor"); |
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| 69 | if(parmstr!=null && parmstr.length()>0) { |
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| 70 | bgcolor=Color.decode(parmstr); |
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| 71 | if(bgcolor==null) bgcolor=Color.white; |
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| 72 | } |
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| 73 | else bgcolor=Color.white; |
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| 74 | |||
| 75 | parmstr=getParameter("replyurl"); |
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| 76 | if(parmstr!=null && parmstr.length()>0) { |
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| 77 | replystring=parmstr; |
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| 78 | } |
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| 79 | else replystring="http://wims.unice.fr/"; |
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| 80 | |||
| 81 | parmstr=getParameter("retry"); |
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| 82 | if(parmstr!=null && parmstr.length()>0) { |
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| 83 | retry=parmstr; |
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| 84 | } |
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| 85 | |||
| 86 | parmstr=getParameter("prompt"); |
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| 87 | if(parmstr!=null && parmstr.length()>0) { |
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| 88 | prompt=parmstr; |
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| 89 | } |
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| 90 | |||
| 91 | setLayout(new BorderLayout()); |
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| 92 | panel=new inp_panel(bgcolor,bg); |
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| 93 | controls=new inp_controls(panel,this); |
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| 94 | add("Center", panel); |
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| 95 | add("South",controls); |
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| 96 | } |
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| 97 | |||
| 98 | public void destroy() { |
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| 99 | remove(panel); |
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| 100 | remove(controls); |
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| 101 | } |
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| 102 | |||
| 103 | public static void main(String args[]) { |
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| 104 | Frame f=new Frame("input"); |
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| 105 | input input=new input(); |
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| 106 | input.init(); |
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| 107 | input.start(); |
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| 108 | |||
| 109 | f.add("Center", input); |
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| 110 | f.show(); |
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| 111 | } |
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| 112 | |||
| 113 | public void replyback() { |
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| 114 | try {backurl=new URL(panel.points2string(replystring));} |
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| 115 | catch (MalformedURLException e) {backurl=null;} |
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| 116 | getAppletContext().showDocument(backurl,"_self"); |
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| 117 | destroy(); |
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| 118 | } |
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| 119 | |||
| 120 | public String getAppletInfo() { |
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| 121 | return "Curve input program for WIMS."; |
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| 122 | } |
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| 123 | } |
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| 124 | |||
| 125 | class inp_panel extends Panel implements MouseListener, MouseMotionListener { |
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| 126 | public static final int CURVE=0, RECT=1, CIRCLE=2, LINES=3, LINE=4, |
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| 127 | SLINE=5,SEG=6,POLY=7,POINTS=8,VEC=9; |
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| 128 | public static int ctype; |
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| 129 | static int ll=4; |
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| 130 | Image bg; |
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| 131 | Vector lines=new Vector(16384); |
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| 132 | int x1,y1; |
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| 133 | int x2,y2; |
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| 134 | int radius; |
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| 135 | int drag; |
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| 136 | int st; |
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| 137 | |||
| 138 | public inp_panel(Color bgcolor,Image gotbg) { |
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| 139 | setBackground(bgcolor); |
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| 140 | setForeground(Color.black); |
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| 141 | bg=gotbg; |
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| 142 | addMouseMotionListener(this); |
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| 143 | addMouseListener(this); |
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| 144 | st=0; |
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| 145 | } |
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| 146 | |||
| 147 | public String points2string(String rep) { |
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| 148 | StringBuffer buf=new StringBuffer(16384); |
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| 149 | buf.append(rep); |
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| 150 | switch(ctype) { |
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| 151 | case POLY: |
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| 152 | case POINTS: |
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| 153 | case LINES: |
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| 154 | case CURVE: { |
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| 155 | int i, np; |
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| 156 | Point p=null; |
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| 157 | np=lines.size(); |
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| 158 | for(i=0;i<np;i++) { |
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| 159 | p=(Point)lines.elementAt(i); |
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| 160 | buf.append(p.x).append(",").append(p.y).append(";"); |
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| 161 | } |
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| 162 | break; |
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| 163 | } |
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| 164 | case SLINE: |
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| 165 | case LINE: |
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| 166 | case SEG: |
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| 167 | case VEC: |
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| 168 | case RECT: { |
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| 169 | if(st>0) { |
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| 170 | buf.append(x1).append(",").append(y1).append(",").append(x2).append(",").append(y2); |
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| 171 | } |
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| 172 | break; |
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| 173 | } |
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| 174 | case CIRCLE: { |
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| 175 | if(st>0) { |
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| 176 | buf.append(x1).append(",").append(y1).append(",").append(radius); |
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| 177 | } |
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| 178 | break; |
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| 179 | } |
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| 180 | } |
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| 181 | return buf.toString(); |
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| 182 | } |
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| 183 | |||
| 184 | public void retry() { |
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| 185 | lines.removeAllElements(); |
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| 186 | st=0; repaint(); |
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| 187 | } |
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| 188 | |||
| 189 | public void mouseDragged(MouseEvent e) { |
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| 190 | int t=lines.size(); |
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| 191 | int dr; |
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| 192 | e.consume(); |
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| 193 | switch(ctype) { |
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| 194 | case CURVE: { |
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| 195 | if(t<2000) { |
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| 196 | x1=e.getX(); y1=e.getY(); |
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| 197 | lines.addElement(new Point(x1, y1)); |
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| 198 | repaint(); |
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| 199 | } |
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| 200 | st=2; return; |
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| 201 | } |
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| 202 | default: { |
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| 203 | dr=drag; mouseMoved(e); drag=dr+1; |
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| 204 | return; |
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| 205 | } |
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| 206 | } |
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| 207 | } |
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| 208 | |||
| 209 | public void mouseMoved(MouseEvent e) { |
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| 210 | e.consume(); drag=0; |
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| 211 | switch(ctype) { |
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| 212 | case POLY: |
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| 213 | case POINTS: |
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| 214 | case LINES: |
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| 215 | case CURVE: { |
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| 216 | if(st==0) return; else st=1; |
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| 217 | x2=e.getX(); y2=e.getY(); break; |
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| 218 | } |
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| 219 | case CIRCLE: |
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| 220 | case SLINE: |
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| 221 | case LINE: |
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| 222 | case SEG: |
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| 223 | case VEC: |
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| 224 | case RECT: { |
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| 225 | if(st!=1) return; |
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| 226 | x2=e.getX(); y2=e.getY(); |
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| 227 | radius=(int) Math.sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1)); |
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| 228 | break; |
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| 229 | } |
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| 230 | default: return; |
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| 231 | } |
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| 232 | if(ctype!=POINTS) repaint(); |
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| 233 | } |
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| 234 | |||
| 235 | public void mousePressed(MouseEvent e) { |
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| 236 | e.consume(); |
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| 237 | switch(ctype) { |
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| 238 | case CURVE: { |
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| 239 | if(st>0) return; |
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| 240 | x1=e.getX(); y1=e.getY(); x2=x1; y2=y1; |
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| 241 | lines.removeAllElements(); |
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| 242 | lines.addElement(new Point(x1,y1)); |
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| 243 | repaint(); st=2; |
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| 244 | return; |
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| 245 | } |
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| 246 | case POLY: |
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| 247 | case POINTS: |
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| 248 | case LINES: { |
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| 249 | x2=e.getX(); y2=e.getY(); |
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| 250 | if(st==0) lines.removeAllElements(); |
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| 251 | lines.addElement(new Point(x2,y2)); |
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| 252 | st=1; x1=x2; y1=y2; repaint(); return; |
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| 253 | } |
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| 254 | case CIRCLE: |
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| 255 | case SLINE: |
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| 256 | case LINE: |
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| 257 | case SEG: |
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| 258 | case VEC: |
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| 259 | case RECT: { |
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| 260 | x2=e.getX(); y2=e.getY(); |
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| 261 | switch(st) { |
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| 262 | case 2: |
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| 263 | case 0: x1=x2; y1=y2; radius=0; st=1; repaint(); return; |
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| 264 | case 1: { |
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| 265 | radius=(int) Math.sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1)); |
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| 266 | st=2; return; |
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| 267 | } |
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| 268 | } |
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| 269 | break; |
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| 270 | } |
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| 271 | default: return; |
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| 272 | } |
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| 273 | } |
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| 274 | |||
| 275 | public void mouseReleased(MouseEvent e) { |
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| 276 | e.consume(); |
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| 277 | switch(ctype) { |
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| 278 | case CURVE: { |
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| 279 | if(st==2) return; |
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| 280 | x2=e.getX(); y2=e.getY(); |
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| 281 | if(st==0) lines.removeAllElements(); |
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| 282 | lines.addElement(new Point(x2,y2)); |
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| 283 | st=1; x1=x2; y1=y2; |
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| 284 | return; |
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| 285 | } |
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| 286 | case POINTS: return; |
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| 287 | default: { |
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| 288 | if(st>0 && drag>=8) mousePressed(e); |
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| 289 | return; |
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| 290 | } |
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| 291 | } |
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| 292 | } |
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| 293 | |||
| 294 | public void mouseEntered(MouseEvent e) { |
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| 295 | } |
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| 296 | |||
| 297 | public void mouseExited(MouseEvent e) { |
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| 298 | if(ctype!=CURVE && ctype!=LINES && ctype!=POLY) return; |
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| 299 | e.consume(); |
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| 300 | x2=x1; y2=y1; if(st>0) repaint(); |
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| 301 | } |
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| 302 | |||
| 303 | public void mouseClicked(MouseEvent e) { |
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| 304 | } |
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| 305 | |||
| 306 | public void paint(Graphics g) { |
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| 307 | int np=lines.size(); |
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| 308 | Point pp; |
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| 309 | |||
| 310 | if(bg!=null) g.drawImage(bg,0,0,this); |
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| 311 | switch(ctype) { |
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| 312 | case POINTS: { |
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| 313 | if(np>0) for (int i=0; i < np; i++) |
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| 314 | pointPaint(g,(Point)lines.elementAt(i)); |
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| 315 | break; |
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| 316 | } |
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| 317 | case POLY: |
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| 318 | case CURVE: |
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| 319 | case LINES: { |
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| 320 | if(np>0) { |
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| 321 | pp=(Point)lines.elementAt(0); |
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| 322 | for (int i=1; i < np; i++) { |
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| 323 | Point p=(Point)lines.elementAt(i); |
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| 324 | g.drawLine(pp.x, pp.y, p.x, p.y); |
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| 325 | pp=p; |
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| 326 | } |
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| 327 | if (st==1) g.drawLine(x1, y1, x2, y2); |
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| 328 | } |
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| 329 | if(ctype==POLY && np>1) { |
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| 330 | Point p1=(Point)lines.elementAt(0); |
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| 331 | Point p2=(Point)lines.elementAt(np-1); |
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| 332 | if(st==0) g.drawLine(p1.x,p1.y,p2.x,p2.y); |
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| 333 | else g.drawLine(p1.x,p1.y,x2,y2); |
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| 334 | } |
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| 335 | break; |
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| 336 | } |
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| 337 | case SEG: |
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| 338 | case VEC: |
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| 339 | case SLINE: |
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| 340 | case LINE: |
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| 341 | case RECT: { |
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| 342 | if(st>0) { |
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| 343 | int xx1,yy1,xx2,yy2; |
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| 344 | int X1,Y1,X2,Y2,max; |
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| 345 | xx1=Math.min(x1,x2); yy1=Math.min(y1,y2); |
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| 346 | xx2=Math.max(x1,x2); yy2=Math.max(y1,y2); |
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| 347 | max=Math.max(Math.abs(x2-x1),Math.abs(y2-y1)); |
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| 348 | if(max<10) max=10; |
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| 349 | max=500/max+1; |
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| 350 | switch(ctype) { |
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| 351 | case RECT: g.drawRect(xx1,yy1,xx2-xx1,yy2-yy1); break; |
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| 352 | case SLINE: { |
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| 353 | g.fillOval(x1-2,y1-2,4,4); |
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| 354 | g.drawLine(x1,y1,max*x2-(max-1)*x1,max*y2-(max-1)*y1); break; |
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| 355 | } |
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| 356 | case LINE: { |
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| 357 | g.fillOval(x1-2,y1-2,4,4); |
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| 358 | g.fillOval(x2-2,y2-2,4,4); |
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| 359 | g.drawLine(max*x1-(max-1)*x2,max*y1-(max-1)*y2, |
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| 360 | max*x2-(max-1)*x1,max*y2-(max-1)*y1); break; |
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| 361 | } |
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| 362 | case SEG: g.drawLine(x1,y1,x2,y2); break; |
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| 363 | case VEC: { |
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| 364 | g.drawLine(x1,y1,x2,y2); |
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| 365 | if(radius > 5) { /* arrow head */ |
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| 366 | double dx,dy,dd[]; |
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| 367 | int xx[], yy[]; |
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| 368 | dd=new double[6]; |
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| 369 | xx=new int[3]; |
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| 370 | yy=new int[3]; |
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| 371 | double l=12; |
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| 372 | double fat=0.3; |
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| 373 | xx[0]=x2;yy[0]=y2; |
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| 374 | dx=x1-x2; dy=y1-y2; |
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| 375 | dd[0]=l*dx/radius; dd[1]=l*dy/radius; |
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| 376 | dd[2]=dd[0]+dd[1]*fat; dd[3]=dd[1]-dd[0]*fat; |
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| 377 | dd[4]=dd[0]-dd[1]*fat; dd[5]=dd[1]+dd[0]*fat; |
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| 378 | xx[1]=(int) dd[2]+xx[0]; |
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| 379 | yy[1]=(int) dd[3]+yy[0]; |
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| 380 | xx[2]=(int) dd[4]+xx[0]; |
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| 381 | yy[2]=(int) dd[5]+yy[0]; |
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| 382 | g.fillPolygon(xx,yy,3); |
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| 383 | } |
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| 384 | break; |
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| 385 | } |
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| 386 | } |
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| 387 | } |
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| 388 | break; |
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| 389 | } |
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| 390 | case CIRCLE: { |
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| 391 | if(st>0) { |
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| 392 | pointPaint(g,new Point(x1,y1)); |
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| 393 | g.drawOval(x1-radius,y1-radius,radius*2,radius*2); |
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| 394 | } |
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| 395 | break; |
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| 396 | } |
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| 397 | } |
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| 398 | } |
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| 399 | |||
| 400 | void pointPaint(Graphics g, Point p) { |
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| 401 | g.drawLine(p.x-ll,p.y+ll,p.x+ll,p.y-ll); |
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| 402 | g.drawLine(p.x+ll,p.y+ll,p.x-ll,p.y-ll); |
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| 403 | } |
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| 404 | } |
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| 405 | |||
| 406 | |||
| 407 | class inp_controls extends Panel implements ActionListener { |
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| 408 | input ci; |
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| 409 | inp_panel targ; |
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| 410 | Button retry, ok; |
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| 411 | |||
| 412 | public inp_controls(inp_panel pan, input cci) { |
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| 413 | this.ci=cci; |
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| 414 | targ=pan; |
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| 415 | setLayout(new GridLayout()); |
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| 416 | setBackground(Color.white); |
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| 417 | retry=new Button(input.retry); |
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| 418 | retry.addActionListener(this); |
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| 419 | ok=new Button(input.prompt); |
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| 420 | ok.addActionListener(this); |
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| 421 | add(retry); add(ok); |
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| 422 | } |
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| 423 | |||
| 424 | public void actionPerformed(ActionEvent e) { |
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| 425 | Object src=e.getSource(); |
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| 426 | if(src == retry) targ.retry(); |
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| 427 | if(src == ok) ci.replyback(); |
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| 428 | } |
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| 429 | |||
| 430 | } |
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| 431 |