Subhobhai943/SUB-OS
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feat(gui): Make the desktop terminal run real commands

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The GUI terminal recognised four hardcoded strings and answered everything else
with "Executed: '<cmd>'". It now dispatches to the same LazyBox applet table and
shell builtins the kernel TTY uses, so ls, free, uname, lspci, ktest, neofetch,
sort, cd and the rest all work, with cwd tracked across commands.

LazyBox reports through printk, so before running a command the terminal
installs a printk sink and streams the output into its own scrollback:

  - ANSI SGR codes become per-line colours instead of being stripped.
  - CP437 box-drawing and block characters fall back to ASCII, so the colour
    swatch in neofetch renders as '#' rather than a row of '?'.
  - 256 lines of scrollback, command history on Up/Down, PgUp/PgDn/Home/End.
  - Applets that read the keyboard directly (nano, snake, sh, top) are refused
    with a pointer to the TTY, since they would block the compositor.

The window's paint and event handlers moved out of gui_apps.c into
gui/gui_terminal.c, and gui_gfx.c now draws from the shared lib/font8x8.c table
rather than its own copy.

Co-Authored-By: Claude Opus 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01L5yKJT4Wo2cV3rfPrwY5MP
This commit is contained in:
subhobhai943andClaude Opus 5 committed 2026-08-25 01:36:02 +05:30
1 parent 56a378b142
commit eacba4f4d3
8 files changed
+543 -196
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gui/gui_gfx.c
+3 -101
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@@ -1,5 +1,6 @@
// High-Performance 2D Graphics Engine & Software Compositor for SUB-OS
#include <gui/gui_gfx.h>
#include <lib/font8x8.h>
#include <mm/kmalloc.h>
#include <lib/string.h>
@@ -8,105 +9,6 @@ static uint32_t* g_backbuffer = NULL;
static int g_width = 800;
static int g_height = 600;
// Standard 8x8 font bitmap table for printable ASCII characters (32..126)
static const uint8_t font8x8[96][8] = {
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}, // space
{0x18,0x3c,0x3c,0x18,0x18,0x00,0x18,0x00}, // !
{0x66,0x66,0x24,0x00,0x00,0x00,0x00,0x00}, // "
{0x6c,0x6c,0xfe,0x6c,0xfe,0x6c,0x6c,0x00}, // #
{0x18,0x3e,0x60,0x3c,0x06,0x7c,0x18,0x00}, // $
{0x00,0x63,0x66,0x0c,0x18,0x33,0x63,0x00}, // %
{0x38,0x6c,0x38,0x76,0xdc,0xcc,0x76,0x00}, // &
{0x18,0x18,0x30,0x00,0x00,0x00,0x00,0x00}, // '
{0x0c,0x18,0x30,0x30,0x30,0x18,0x0c,0x00}, // (
{0x30,0x18,0x0c,0x0c,0x0c,0x18,0x30,0x00}, // )
{0x00,0x66,0x3c,0xff,0x3c,0x66,0x00,0x00}, // *
{0x00,0x18,0x18,0x7e,0x18,0x18,0x00,0x00}, // +
{0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x30}, // ,
{0x00,0x00,0x00,0x7e,0x00,0x00,0x00,0x00}, // -
{0x00,0x00,0x00,0x00,0x00,0x18,0x18,0x00}, // .
{0x06,0x0c,0x18,0x30,0x60,0xc0,0x80,0x00}, // /
{0x7c,0xc6,0xce,0xd6,0xe6,0xc6,0x7c,0x00}, // 0
{0x18,0x38,0x18,0x18,0x18,0x18,0x7e,0x00}, // 1
{0x7c,0xc6,0x06,0x1c,0x30,0x66,0xfe,0x00}, // 2
{0x7c,0xc6,0x06,0x3c,0x06,0xc6,0x7c,0x00}, // 3
{0x1c,0x3c,0x6c,0xcc,0xfe,0x0c,0x1e,0x00}, // 4
{0xfe,0xc0,0xfc,0x06,0x06,0xc6,0x7c,0x00}, // 5
{0x7c,0xc6,0xc0,0xfc,0xc6,0xc6,0x7c,0x00}, // 6
{0xfe,0x06,0x0c,0x18,0x30,0x30,0x30,0x00}, // 7
{0x7c,0xc6,0xc6,0x7c,0xc6,0xc6,0x7c,0x00}, // 8
{0x7c,0xc6,0xc6,0x7e,0x06,0xc6,0x7c,0x00}, // 9
{0x00,0x18,0x18,0x00,0x18,0x18,0x00,0x00}, // :
{0x00,0x18,0x18,0x00,0x18,0x18,0x30,0x00}, // ;
{0x06,0x0c,0x18,0x30,0x18,0x0c,0x06,0x00}, // <
{0x00,0x00,0x7e,0x00,0x7e,0x00,0x00,0x00}, // =
{0x60,0x30,0x18,0x0c,0x18,0x30,0x60,0x00}, // >
{0x7c,0xc6,0x0c,0x18,0x18,0x00,0x18,0x00}, // ?
{0x7c,0xc6,0xde,0xde,0xdc,0xc0,0x7c,0x00}, // @
{0x38,0x6c,0xc6,0xfe,0xc6,0xc6,0xc6,0x00}, // A
{0xfc,0x66,0x66,0x7c,0x66,0x66,0xfc,0x00}, // B
{0x3c,0x66,0xc0,0xc0,0xc0,0x66,0x3c,0x00}, // C
{0xf8,0x6c,0x66,0x66,0x66,0x6c,0xf8,0x00}, // D
{0xfe,0x62,0x68,0x78,0x68,0x62,0xfe,0x00}, // E
{0xfe,0x62,0x68,0x78,0x68,0x60,0xf0,0x00}, // F
{0x3c,0x66,0xc0,0xc0,0xce,0x66,0x3e,0x00}, // G
{0xc6,0xc6,0xc6,0xfe,0xc6,0xc6,0xc6,0x00}, // H
{0x3c,0x18,0x18,0x18,0x18,0x18,0x3c,0x00}, // I
{0x1e,0x0c,0x0c,0x0c,0xcc,0xcc,0x78,0x00}, // J
{0xe6,0x66,0x6c,0x78,0x6c,0x66,0xe6,0x00}, // K
{0xf0,0x60,0x60,0x60,0x62,0x66,0xfe,0x00}, // L
{0xc6,0xee,0xfe,0xd6,0xc6,0xc6,0xc6,0x00}, // M
{0xc6,0xe6,0xf6,0xde,0xce,0xc6,0xc6,0x00}, // N
{0x7c,0xc6,0xc6,0xc6,0xc6,0xc6,0x7c,0x00}, // O
{0xfc,0x66,0x66,0x7c,0x60,0x60,0xf0,0x00}, // P
{0x7c,0xc6,0xc6,0xc6,0xd6,0xde,0x7c,0x06}, // Q
{0xfc,0x66,0x66,0x7c,0x6c,0x66,0xe6,0x00}, // R
{0x7c,0xc6,0x60,0x38,0x0c,0xc6,0x7c,0x00}, // S
{0x7e,0x18,0x18,0x18,0x18,0x18,0x18,0x00}, // T
{0xc6,0xc6,0xc6,0xc6,0xc6,0xc6,0x7c,0x00}, // U
{0xc6,0xc6,0xc6,0xc6,0xc6,0x6c,0x38,0x00}, // V
{0xc6,0xc6,0xc6,0xd6,0xfe,0xee,0xc6,0x00}, // W
{0xc6,0xc6,0x6c,0x38,0x6c,0xc6,0xc6,0x00}, // X
{0x66,0x66,0x66,0x3c,0x18,0x18,0x18,0x00}, // Y
{0xfe,0x06,0x0c,0x18,0x30,0x60,0xfe,0x00}, // Z
{0x3c,0x30,0x30,0x30,0x30,0x30,0x3c,0x00}, // [
{0xc0,0x60,0x30,0x18,0x0c,0x06,0x02,0x00}, // backslash
{0x3c,0x0c,0x0c,0x0c,0x0c,0x0c,0x3c,0x00}, // ]
{0x10,0x38,0x6c,0xc6,0x00,0x00,0x00,0x00}, // ^
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xff}, // _
{0x30,0x18,0x0c,0x00,0x00,0x00,0x00,0x00}, // `
{0x00,0x00,0x78,0x0c,0x7c,0xcc,0x76,0x00}, // a
{0xe0,0x60,0x7c,0x66,0x66,0x66,0xdc,0x00}, // b
{0x00,0x00,0x78,0xcc,0xc0,0xcc,0x78,0x00}, // c
{0x1c,0x0c,0x7c,0xcc,0xcc,0xcc,0x76,0x00}, // d
{0x00,0x00,0x78,0xcc,0xfc,0xc0,0x78,0x00}, // e
{0x38,0x6c,0x60,0xf0,0x60,0x60,0xf0,0x00}, // f
{0x00,0x00,0x76,0xcc,0xcc,0x7c,0x0c,0xf8}, // g
{0xe0,0x60,0x6c,0x76,0x66,0x66,0xe6,0x00}, // h
{0x18,0x00,0x38,0x18,0x18,0x18,0x3c,0x00}, // i
{0x0c,0x00,0x1c,0x0c,0x0c,0xcc,0xcc,0x78}, // j
{0xe0,0x60,0x66,0x6c,0x78,0x6c,0xe6,0x00}, // k
{0x38,0x18,0x18,0x18,0x18,0x18,0x3c,0x00}, // l
{0x00,0x00,0xec,0xfe,0xd6,0xc6,0xc6,0x00}, // m
{0x00,0x00,0xdc,0x66,0x66,0x66,0x66,0x00}, // n
{0x00,0x00,0x7c,0xc6,0xc6,0xc6,0x7c,0x00}, // o
{0x00,0x00,0xdc,0x66,0x66,0x7c,0x60,0xf0}, // p
{0x00,0x00,0x76,0xcc,0xcc,0x7c,0x0c,0x1e}, // q
{0x00,0x00,0xdc,0x76,0x60,0x60,0xf0,0x00}, // r
{0x00,0x00,0x7c,0xc0,0x78,0x0c,0xf8,0x00}, // s
{0x10,0x30,0x7c,0x30,0x30,0x34,0x18,0x00}, // t
{0x00,0x00,0xcc,0xcc,0xcc,0xcc,0x76,0x00}, // u
{0x00,0x00,0xc6,0xc6,0xc6,0x6c,0x38,0x00}, // v
{0x00,0x00,0xc6,0xc6,0xd6,0xfe,0x6c,0x00}, // w
{0x00,0x00,0xc6,0x6c,0x38,0x6c,0xc6,0x00}, // x
{0x00,0x00,0xcc,0xcc,0xcc,0x7c,0x0c,0xf8}, // y
{0x00,0x00,0xfc,0x18,0x30,0x60,0xfc,0x00}, // z
{0x0e,0x18,0x18,0x70,0x18,0x18,0x0e,0x00}, // {
{0x18,0x18,0x18,0x00,0x18,0x18,0x18,0x00}, // |
{0x70,0x18,0x18,0x0e,0x18,0x18,0x70,0x00}, // }
{0x76,0xdc,0x00,0x00,0x00,0x00,0x00,0x00}, // ~
{0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00} // DEL
};
void gui_gfx_init(uint32_t* fb, int width, int height) {
g_frontbuffer = fb;
@@ -235,7 +137,7 @@ void gui_gfx_draw_gradient_h(int x, int y, int w, int h, uint32_t left_col, uint
void gui_gfx_draw_char(int x, int y, char c, uint32_t fg, uint32_t bg, bool transparent_bg) {
if (c < 32 || c > 126) c = '?';
const uint8_t* glyph = font8x8[c - 32];
const uint8_t* glyph = font8x8_glyph(c);
for (int row = 0; row < 8; row++) {
uint8_t bits = glyph[row];
@@ -252,7 +154,7 @@ void gui_gfx_draw_char(int x, int y, char c, uint32_t fg, uint32_t bg, bool tran
// Sharp High-DPI 8x16 font renderer with 2x vertical pixel fidelity
void gui_gfx_draw_char_16(int x, int y, char c, uint32_t fg, uint32_t bg, bool transparent_bg) {
if (c < 32 || c > 126) c = '?';
const uint8_t* glyph = font8x8[c - 32];
const uint8_t* glyph = font8x8_glyph(c);
for (int row = 0; row < 8; row++) {
uint8_t bits = glyph[row];