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hokey arrow key support for macosx

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benfry
2002-09-02 15:20:58 +00:00
parent 5080fad327
commit eb92b60ce7
1 changed files with 45 additions and 15 deletions
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60
app/PdeEditorListener.java
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@@ -73,52 +73,82 @@ public class PdeEditorListener extends KeyAdapter implements FocusListener {
case KeyEvent.VK_UP:
char contents[] = tc.getText().toCharArray();
for (int i = 0; i < 20; i++) System.out.print((int)contents[i] + " ");
// figure out how far left to the newline
int howfar = 0;
// an improved version might use this..
// it worked for DOWN, but i'd mostly fixed UP already
//if (contents[position] == 10) position--;
int p = position;
//System.out.println(p);
while ((p > 0) && (contents[p] != 13) && (contents[p] != 10)) {
//System.out.println("position = " + p);
while ((p > 0) && (contents[p] != 10)) {
p--; howfar++;
}
howfar--;
System.out.println("howfar = " + howfar);
// step over the newline
while ((p > 0) && ((contents[p] == 13) || (contents[p] == 10))) {
p--;
p--;
if (p <= 0) {
tc.setCaretPosition(0);
return;
}
//if (contents[position] == 10) {
if (contents[p] == 10) {
//System.out.println("double newlines at current position");
//}
p--;
} else {
howfar--;
}
//System.out.println("dist from left = " + howfar);
if (p == 0) return; // nothing above
// look for the next
//System.out.println("now backing up from char " + contents[p]);
// determine length of previous line
int howlong = 0;
while ((p > 0) && (contents[p] != 13) && (contents[p] != 10)) {
while ((p >= 0) && (contents[p] != 10)) {
p--; howlong++;
}
System.out.println("next line is " + howlong);
tc.setCaretPosition(p + 1 + Math.min(howfar, howlong));
//System.out.println("moving to line of length " + howlong);
tc.setCaretPosition(p + Math.min(howfar, howlong) + 1);
//System.out.println();
break;
case KeyEvent.VK_DOWN:
contents = tc.getText().toCharArray();
// figure out how far left to the newline
howfar = 0;
p = position;
while ((p > 0) && (contents[p] != 13) && (contents[p] != 10)) {
if (contents[p] == 10) {
p--;
position--;
}
while ((p > 0) && (contents[p] != 10)) {
p--; howfar++;
}
//System.out.println("howfar = " + howfar);
// step forward and find the next newline
p = position;
// if at end of line, this is an eol, step over it
//if (contents[p] == 10) p++;
int last = contents.length - 1;
//System.out.println("howfar = " + howfar);
//int howlong = 0;
while ((p < last) && (contents[p] != 13) && (contents[p] != 10))
while ((p < last) && (contents[p] != 10))
p++;
if (p == last) return; // nothing below
while ((p < last) && ((contents[p] == 13) || (contents[p] == 10)))
while ((p < last) && (contents[p] == 10))
p++;
int newline = p;
// see if enough room on this line
while ((p < last) && (p < newline + howfar-1) &&
(contents[p] != 13) && (contents[p] != 10)) p++;
(contents[p] != 10)) p++;
tc.setCaretPosition(p);
break;
}