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edit.js: can scroll text horizontally but pretty much wip

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This commit is contained in:
minjaesong
2021-04-16 11:25:11 +09:00
parent 36e043fd16
commit fba4ccb0cb
1 changed files with 50 additions and 29 deletions
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79
assets/disk0/tvdos/bin/edit.js
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@@ -1,3 +1,18 @@
//const menubarItems = ["File","Edit","View"];
const menubarItems = [`^S${String.fromCharCode(221)}save`,`^X${String.fromCharCode(221)}exit`];
const menubarFile = ["New","Open","Save","Save as","Exit"];
const menubarEdit = ["Undo","Redo","Cut","Copy","Paste","Select All","Deselect"];
const menubarView = ["Go To Line"];
const menubarContents = [menubarFile, menubarEdit, menubarView];
const COL_TEXT = 252;
const COL_BACK = 255;
const COL_SUPERTEXT = 239;
const COL_DIMTEXT = 249;
const COL_LNUMBACK = 18;
const COL_LNUMFORE = 252;
const PAINT_START_X = 5;
const PAINT_START_Y = 2;
let filename = undefined;
if (exec_args !== undefined && exec_args[1] !== undefined) {
@@ -11,6 +26,7 @@ let driveLetter = _G.shell.getCurrentDrive();
let filePath = _G.shell.getPwdString() + filename;
let scroll = 0;
let scrollHor = 0;
let textbuffer = [""];
let cursorRow = 0;
let cursorCol = 0;
@@ -26,31 +42,17 @@ if (editingExistingFile) {
let windowWidth = con.getmaxyx()[1];
let windowHeight = con.getmaxyx()[0];
let paintWidth = windowWidth - 4;
let paintHeight = windowHeight - 1;
let paintWidth = windowWidth - PAINT_START_X + 1;
let paintHeight = windowHeight - PAINT_START_Y + 1;
let scrollPeek = Math.ceil((paintHeight / 7));
function drawInit() {
windowWidth = con.getmaxyx()[1];
windowHeight = con.getmaxyx()[0];
paintWidth = windowWidth - 4;
paintHeight = windowHeight - 1;
paintWidth = windowWidth - PAINT_START_X + 1;
paintHeight = windowHeight - PAINT_START_Y + 1;
scrollPeek = Math.ceil((paintHeight / 7));
}
//const menubarItems = ["File","Edit","View"];
const menubarItems = [`^S${String.fromCharCode(221)}save`,`^X${String.fromCharCode(221)}exit`];
const menubarFile = ["New","Open","Save","Save as","Exit"];
const menubarEdit = ["Undo","Redo","Cut","Copy","Paste","Select All","Deselect"];
const menubarView = ["Go To Line"];
const menubarContents = [menubarFile, menubarEdit, menubarView];
const COL_TEXT = 252;
const COL_BACK = 255;
const COL_SUPERTEXT = 239;
const COL_DIMTEXT = 249;
const COL_LNUMBACK = 18;
const COL_LNUMFORE = 252;
function reset_status() {
scroll = 0;
textbuffer = [""];
@@ -63,7 +65,7 @@ function reset_status() {
function drawLineNumbers() {
con.color_pair(COL_LNUMFORE, COL_LNUMBACK);
for (let y = 0; y < paintHeight; y++) {
con.move(y+2, 1);
con.move(y + PAINT_START_Y, 1);
let lnum = scroll + y + 1;
if (lnum >= 1000) print(`${lnum}`);
else if (lnum >= 100) print(`${lnum} `);
@@ -115,7 +117,7 @@ function drawMain() {
// print status line
drawLnCol();
con.move(2,5); con.color_pair(COL_TEXT, COL_BACK);
con.move(PAINT_START_Y, PAINT_START_X); con.color_pair(COL_TEXT, COL_BACK);
}
function drawMenubarBase(index) {
@@ -159,8 +161,8 @@ function drawTextLine(paintRow) {
con.color_pair(COL_TEXT, COL_BACK);
con.curs_set(0);
for(let x = 0; x < paintWidth; x++) {
let charCode = (undefined === textbuffer[scroll + paintRow]) ? 0 : textbuffer[scroll + paintRow].charCodeAt(x)|0; // or-zero to convert NaN into 0
con.mvaddch(2+paintRow, 5+x, charCode);
let charCode = (undefined === textbuffer[scroll + paintRow]) ? 0 : textbuffer[scroll + paintRow].charCodeAt(x + scrollHor)|0; // or-zero to convert NaN into 0
con.mvaddch(PAINT_START_Y + paintRow, PAINT_START_X + x, charCode);
}
}
@@ -188,7 +190,7 @@ function dismissBulletin() {
}
function gotoText() {
con.move(2 + cursorRow - scroll, 5 + cursorCol);
con.move(PAINT_START_Y + cursorRow - scroll, PAINT_START_X + cursorCol - scrollHor);
con.curs_set(1);
}
@@ -224,7 +226,7 @@ function appendText(code) {
//textbuffer[cursorRow] += String.fromCharCode(code);
}
cursorCol += 1;
nextCol();
drawTextLine(cursorRow - scroll);
drawLnCol();
gotoText();
@@ -232,17 +234,36 @@ function appendText(code) {
function appendLine() {
textbuffer.push("");
// reset horizontal scroll before going to the next line
scrollHor = 0;
drawTextLine(cursorRow - scroll);
// go to the next line
cursorRow += 1;
cursorCol = 0;
drawLnCol();
if (cursorRow >= windowHeight - scrollPeek) {
scroll += 1;
drawLineNumbers();
drawTextbuffer();
}
}
gotoText();
function nextCol() {
if (cursorCol < textbuffer[cursorRow].length) {
cursorCol += 1;
if (cursorCol >= paintWidth)
scrollHor += 1;
}
}
function prevCol() {
if (cursorCol > 0) {
cursorCol -= 1;
if (scrollHor > 0 && cursorCol == scrollHor)
scrollHor -= 1;
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////
@@ -274,13 +295,13 @@ while (!exit) {
else if (key == con.KEY_BACKSPACE) { // Bksp
}
else if (key == con.KEY_RETURN) { // Return
appendLine();
appendLine(); drawLnCol(); gotoText();
}
else if (key == con.KEY_LEFT && cursorCol > 0) {
cursorCol -= 1; drawLnCol(); gotoText();
prevCol(); drawLnCol(); gotoText();
}
else if (key == con.KEY_RIGHT && cursorCol < textbuffer[cursorRow].length) {
cursorCol += 1; drawLnCol(); gotoText();
nextCol(); drawLnCol(); gotoText();
}
else if (key >= 32 && key < 128) { // printables (excludes \n)
appendText(key);