src/com/googlecode/lanterna/input/MouseCharacterPattern.java

   1 package com.googlecode.lanterna.input;
   2
   3 import com.googlecode.lanterna.TerminalPosition;
   4
   5 import java.util.List;
   6
   7 /**
   8  * Pattern used to detect Xterm-protocol mouse events coming in on the standard input channel
   9  * Created by martin on 19/07/15.
  10  *
  11  * @author Martin, Andreas
  12  */
  13 public class MouseCharacterPattern implements CharacterPattern {
  14     private static final char[] PATTERN = { KeyDecodingProfile.ESC_CODE, '[', 'M' };
  15
  16     @Override
  17     public Matching match(List<Character> seq) {
  18         int size = seq.size();
  19         if (size > 6) {
  20             return null; // nope
  21         }
  22         // check first 3 chars:
  23         for (int i = 0; i < 3; i++) {
  24             if ( i >= size ) {
  25                 return Matching.NOT_YET; // maybe later
  26             }
  27             if ( seq.get(i) != PATTERN[i] ) {
  28                 return null; // nope
  29             }
  30         }
  31         if (size < 6) {
  32             return Matching.NOT_YET; // maybe later
  33         }
  34         MouseActionType actionType = null;
  35         int button = (seq.get(3) & 0x3) + 1;
  36         if(button == 4) {
  37             //If last two bits are both set, it means button click release
  38             button = 0;
  39         }
  40         int actionCode = (seq.get(3) & 0x60) >> 5;
  41         switch(actionCode) {
  42             case(1):
  43                 if(button > 0) {
  44                     actionType = MouseActionType.CLICK_DOWN;
  45                 }
  46                 else {
  47                     actionType = MouseActionType.CLICK_RELEASE;
  48                 }
  49                 break;
  50             case(2):
  51                 if(button == 0) {
  52                     actionType = MouseActionType.MOVE;
  53                 }
  54                 else {
  55                     actionType = MouseActionType.DRAG;
  56                 }
  57                 break;
  58             case(3):
  59                 if(button == 1) {
  60                     actionType = MouseActionType.SCROLL_UP;
  61                     button = 4;
  62                 }
  63                 else {
  64                     actionType = MouseActionType.SCROLL_DOWN;
  65                     button = 5;
  66                 }
  67                 break;
  68         }
  69         TerminalPosition pos = new TerminalPosition( seq.get(4) - 33, seq.get(5) - 33 );
  70
  71         MouseAction ma = new MouseAction(actionType, button, pos );
  72         return new Matching( ma ); // yep
  73     }
  74 }