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edit.js: tab key impl

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This commit is contained in:
minjaesong
2021-04-22 17:47:27 +09:00
parent 2767386820
commit c331397619
2 changed files with 17 additions and 1 deletions
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1
assets/JS_INIT.js
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@@ -387,6 +387,7 @@ con.KEY_PAGE_DOWN = 209;
con.KEY_INSERT = 210;
con.KEY_DELETE = 211;
con.KEY_BACKSPACE = 8;
con.KEY_TAB = 9;
con.KEY_RETURN = 13;
con.getch = function() {
return sys.readKey();

17
assets/disk0/tvdos/bin/edit.js
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@@ -14,6 +14,7 @@ const COL_CARET_ROW = 81;
const PAINT_START_X = 5;
const PAINT_START_Y = 2;
const BIG_STRIDE = 10000;
const TAB_SIZE = 4;
let filename = undefined;
@@ -171,7 +172,8 @@ function drawTextLineAbsolute(rowNumber, paintOffsetX) {
con.color_pair(COL_TEXT, (rowNumber == cursorRow) ? COL_CARET_ROW : COL_BACK);
for (let x = 0; x < paintWidth; x++) {
let text = textbuffer[rowNumber] + String.fromCharCode(254);
let text = textbuffer[rowNumber];
if (rowNumber < textbuffer.length - 1) text += String.fromCharCode(254);
let charCode =
// nonexisting text row
(undefined === textbuffer[rowNumber]) ? 0 :
@@ -472,6 +474,19 @@ while (!exit) {
cursoringCol = textbuffer[cursorRow].length;
cursorMoveRelative(BIG_STRIDE, 0);
}
else if (key == con.KEY_TAB) { // insert spaces appropriately
let tabsize = TAB_SIZE - (cursorCol % TAB_SIZE);
for (let k = 0; k < tabsize; k++) {
insertChar(32, cursorRow, cursorCol);
// identical to con.KEY_RIGHT
cursoringCol = cursorCol + 1;
if (cursoringCol > textbuffer[cursorRow].length) cursoringCol = textbuffer[cursorRow].length;
cursorMoveRelative(1,0);
// end of con.KEY_RIGHT
}
drawTextLineAbsolute(cursorRow, scrollHor); drawLnCol(); gotoText();
}
else if (key >= 32 && key < 128) { // printables (excludes \n)
insertChar(key, cursorRow, cursorCol);
// identical to con.KEY_RIGHT