text editor mockup

assets/disk0/tvdos/bin/edit.js

@@ -0,0 +1,78 @@
+let scroll = 0;
+let textbuffer = [""];
+let cursorRow = 0;
+let cursorCol = 0;
+
+let windowSize = con.getmaxyx();
+let paintWidth = windowSize[1]-4;
+let paintHeight = windowSize[0]-2;
+let scrollPeek = Math.ceil((paintHeight / 7));
+
+const menubarItems = ["File","Edit","View"];
+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 = [""];
+    cursorRow = 0;
+    cursorCol = 0;
+}
+
+function redraw() {
+    windowSize = con.getmaxyx();
+    scrollPeek = Math.ceil((paintHeight / 6));
+    paintWidth = windowSize[1]-4;
+    paintHeight = windowSize[0]-2;
+
+    con.clear();
+
+    // print menubar
+    con.color_pair(COL_BACK, COL_TEXT);
+    menubarItems.forEach(v=>{
+        print(" ");
+        for (let i = 0; i < v.length; i++) {
+            let c = v.charCodeAt(i);
+            if (c >= 65 && c <= 90)
+                con.color_pair(COL_TEXT, COL_BACK);
+            else
+                con.color_pair(COL_BACK, COL_TEXT);
+
+            con.addch(c); con.curs_right();
+        }
+        print(" ");
+    });
+
+    con.color_pair(COL_BACK, COL_TEXT);
+    let cursPos = con.getyx();
+    for (let i = cursPos[1]; i <= windowSize[1]; i++) {
+        con.mvaddch(1, i, 0);
+    }
+
+    // print line number
+    con.color_pair(COL_LNUMFORE, COL_LNUMBACK);
+    for (let y = 2; y < windowSize[0]; y++) {
+        con.move(y,1);
+        let lnum = scroll+y-1;
+        if (lnum >= 1000) print(`${lnum}`);
+        else if (lnum >= 100) print(`${lnum} `);
+        else if (lnum >= 10) print(` ${lnum} `);
+        else print(`  ${lnum} `);
+    }
+
+    // print status line
+    con.color_pair(COL_BACK, COL_TEXT);
+    let statusMsg = ` Ln ${cursorRow+1} Col ${cursorCol+1}`;
+    for (let x = 1; x <= windowSize[1]; x++) {
+        con.mvaddch(windowSize[0], x, ""+statusMsg.charCodeAt(x-1));
+    }
+
+    con.move(2,5); con.color_pair(COL_TEXT, COL_BACK);
+}
+
+redraw();

src/net/torvald/tsvm/peripheral/CharacterLCDdisplay.kt

@@ -8,7 +8,7 @@ import net.torvald.terrarumsansbitmap.gdx.TextureRegionPack
 import net.torvald.tsvm.VM
 
 class CharacterLCDdisplay(vm: VM) : GraphicsAdapter(vm, AdapterConfig(
-    "pmlcd_inverted", 240, 64, 40, 8, 254, 255, 262144L, "lcd2.png", 0.7f, TEXT_TILING_SHADER_LCD, DRAW_SHADER_FRAG_LCD, 2f
+    "pmlcd_inverted", 240, 64, 40, 8, 252, 255, 262144L, "lcd2.png", 0.7f, TEXT_TILING_SHADER_LCD, DRAW_SHADER_FRAG_LCD, 2f
 )
 ) {
 

src/net/torvald/tsvm/peripheral/GraphicsAdapter.kt

@@ -1250,11 +1250,11 @@ void main() {
 
         val DEFAULT_CONFIG_COLOR_CRT = AdapterConfig(
             "crt_color",
-            560, 448, 80, 32, 254, 255, 256.kB(), "FontROM7x14.png", 0.32f, TEXT_TILING_SHADER_COLOUR
+            560, 448, 80, 32, 252, 255, 256.kB(), "FontROM7x14.png", 0.32f, TEXT_TILING_SHADER_COLOUR
         )
         val DEFAULT_CONFIG_PMLCD = AdapterConfig(
             "pmlcd_inverted",
-            560, 448, 80, 32, 254, 255, 256.kB(), "FontROM7x14.png", 0.64f, TEXT_TILING_SHADER_LCD, DRAW_SHADER_FRAG_LCD
+            560, 448, 80, 32, 252, 255, 256.kB(), "FontROM7x14.png", 0.64f, TEXT_TILING_SHADER_LCD, DRAW_SHADER_FRAG_LCD
         )