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feat(gui,kernel): 1080p HD desktop, polished chrome, ktime clock + live FPS

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GUI polish / HD:
- Default display mode raised to 1920x1080 (video=1920x1080); make run/vnc use
  vgamem_mb=64 and -m 512M. The growable heap absorbs the larger backbuffer,
  shadow and wallpaper (observed: one 16 MB growth to a 48 MB heap).
- Wallpaper: three-stop vertical gradient, a soft concentric-frame edge vignette
  for depth, a finer faint grid, and a centred brand mark.
- Window chrome: brighter/saturated titlebar gradient when focused, an accent
  underline on the active window, and larger/softer drop shadows.
- Default session windows are placed and sized for the HD work area.
- Live FPS pill in the taskbar tray (green/amber/red by rate); tray widened so
  FPS + CPU trace + memory badge + clock no longer overlap.

Kernel:
- kernel/time/ktime.c + include/kernel/ktime.h (new): a unified monotonic
  high-resolution clock that prefers the HPET (nanosecond) and falls back to the
  100 Hz PIT tick. Wired ktime_init() into boot; drives the compositor's FPS
  sampling. New `ktime` LazyBox applet reports the source and uptime.

Verified live (screenshotted): boots to 1920x1080, KTIME reports
"source: HPET, nanosecond resolution", the polished desktop renders with the
active-window accent and vignette, and the tray shows a live FPS reading.
Clean build on x86_64/aarch64/armv8i; 0 panics / 0 OOM.

Co-Authored-By: Claude Opus 4.8 <[email protected]>
Claude-Session: https://claude.ai/code/session_01Fh5z6V7nGPbHvqVG5p4CXX
This commit is contained in:
subhobhai943andClaude Opus 4.8 committed 2026-08-25 22:40:35 +05:30
1 parent ef6714a004
commit 4ecf119377
7 files changed
+154 -26
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gui/gui_wm.c
+12 -3
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@@ -616,15 +616,24 @@ void gui_wm_render(void) {
gui_window_t* win = gui_wm_get_window(g_window_order[i]);
if (!win || !win->visible || win->minimized) continue;
gui_gfx_draw_shadow(win->x, win->y, win->width, win->height, 6);
// A larger, softer drop shadow reads as real depth on the HD desktop.
gui_gfx_draw_shadow(win->x, win->y, win->width, win->height,
win->active ? 12 : 7);
uint32_t border = win->active ? GUI_THEME_PRIMARY : GUI_THEME_BORDER;
gui_gfx_draw_rect(win->x, win->y, win->width, win->height, border);
uint32_t top_bg = win->active ? 0xFF1E293B : 0xFF0F172A;
uint32_t bot_bg = win->active ? 0xFF0F172A : 0xFF0A0E1A;
// Brighter, more saturated titlebar when focused; muted when not.
uint32_t top_bg = win->active ? 0xFF24345A : 0xFF141C2E;
uint32_t bot_bg = win->active ? 0xFF141E38 : 0xFF0B1120;
gui_gfx_draw_gradient_v(win->x + 1, win->y + 1, win->width - 2,
GUI_TITLEBAR_HEIGHT - 1, top_bg, bot_bg);
// Accent underline on the active window's titlebar; plain divider otherwise.
if (win->active) {
gui_gfx_fill_rect(win->x + 1, win->y + GUI_TITLEBAR_HEIGHT - 1,
win->width - 2, 2, GUI_THEME_PRIMARY);
}
gui_gfx_draw_line(win->x, win->y + GUI_TITLEBAR_HEIGHT,
win->x + win->width - 1, win->y + GUI_TITLEBAR_HEIGHT, border);