Added responsiveness to board layout

linux-freecell.py

@@ -817,6 +817,64 @@ TOP_Y = 1
 COL_Y = 6
 
 
+@dataclass(frozen=True)
+class BoardLayout:
+    """Computed horizontal positions for the current terminal width."""
+
+    freecell_xs: Tuple[int, ...]
+    foundation_xs: Tuple[int, ...]
+    tableau_xs: Tuple[int, ...]
+    freecells_label_x: int
+    foundations_label_x: int
+    tableau_label_x: int
+
+
+def spread_positions(count: int, start_x: int, end_x: int) -> Tuple[int, ...]:
+    """Evenly spread fixed-width slots between two inclusive bounds."""
+    if count <= 1:
+        return (start_x,)
+
+    span = max(0, end_x - start_x)
+    step = span / (count - 1)
+    positions = []
+    for index in range(count):
+        positions.append(int(round(start_x + step * index)))
+    return tuple(positions)
+
+
+def compute_board_layout(max_x: int) -> BoardLayout:
+    """Compute a centered, width-aware board layout."""
+    left_margin = 2
+    right_margin = max(left_margin, max_x - CARD_W - 2)
+
+    if max_x < 72:
+        top_start = left_margin
+        top_end = max(top_start, max_x - CARD_W - 2)
+        top_positions = spread_positions(8, top_start, top_end)
+        freecell_xs = top_positions[:4]
+        foundation_xs = top_positions[4:]
+    else:
+        center_gap = max(10, min(20, max_x // 6))
+        left_end = max(left_margin, (max_x // 2) - (center_gap // 2) - CARD_W)
+        right_start = min(right_margin, (max_x // 2) + (center_gap // 2))
+        freecell_xs = spread_positions(4, left_margin, left_end)
+        foundation_xs = spread_positions(4, right_start, right_margin)
+
+    tableau_xs = spread_positions(8, left_margin, right_margin)
+    freecells_label_x = freecell_xs[0]
+    foundations_label_x = foundation_xs[0]
+    tableau_label_x = tableau_xs[0]
+
+    return BoardLayout(
+        freecell_xs=freecell_xs,
+        foundation_xs=foundation_xs,
+        tableau_xs=tableau_xs,
+        freecells_label_x=freecells_label_x,
+        foundations_label_x=foundations_label_x,
+        tableau_label_x=tableau_label_x,
+    )
+
+
 def init_colors() -> None:
     """Initialize curses color pairs."""
     curses.start_color()
@@ -859,14 +917,24 @@ def draw_card_label(card: Optional[Card]) -> str:
     return card.short_name()
 
 
-def draw_top_row(stdscr, game: FreeCellGame) -> None:
+def draw_top_row(stdscr, game: FreeCellGame, layout: BoardLayout) -> None:
     """Draw freecells and foundations."""
-    stdscr.addstr(TOP_Y, 2, "Free Cells", curses.color_pair(1) | curses.A_BOLD)
-    stdscr.addstr(TOP_Y, 40, "Foundations", curses.color_pair(1) | curses.A_BOLD)
+    stdscr.addstr(
+        TOP_Y,
+        layout.freecells_label_x,
+        "Free Cells",
+        curses.color_pair(1) | curses.A_BOLD,
+    )
+    stdscr.addstr(
+        TOP_Y,
+        layout.foundations_label_x,
+        "Foundations",
+        curses.color_pair(1) | curses.A_BOLD,
+    )
 
     # Freecells at indexes 0..3
     for i in range(4):
-        x = 2 + i * (CARD_W + 1)
+        x = layout.freecell_xs[i]
         selected = game.cursor_zone == "top" and game.cursor_index == i
         hinted = game.hinted_freecell(i)
         attr = (
@@ -891,7 +959,7 @@ def draw_top_row(stdscr, game: FreeCellGame) -> None:
 
     # Foundations at indexes 4..7 in cursor space
     for i in range(4):
-        x = 40 + i * (CARD_W + 1)
+        x = layout.foundation_xs[i]
         selected = game.cursor_zone == "top" and game.cursor_index == i + 4
         hinted = game.hinted_foundation(i)
         attr = (
@@ -923,14 +991,19 @@ def draw_top_row(stdscr, game: FreeCellGame) -> None:
             )
 
 
-def draw_columns(stdscr, game: FreeCellGame) -> None:
+def draw_columns(stdscr, game: FreeCellGame, layout: BoardLayout) -> None:
     """Draw the tableau columns."""
-    stdscr.addstr(COL_Y - 1, 2, "Tableau", curses.color_pair(1) | curses.A_BOLD)
+    stdscr.addstr(
+        COL_Y - 1,
+        layout.tableau_label_x,
+        "Tableau",
+        curses.color_pair(1) | curses.A_BOLD,
+    )
 
     max_height = max((len(col) for col in game.columns), default=0)
 
     for col_idx in range(8):
-        x = 2 + col_idx * 9
+        x = layout.tableau_xs[col_idx]
         selected = game.cursor_zone == "bottom" and game.cursor_index == col_idx
         hinted_dest = game.hinted_column_destination(col_idx)
         header_attr = (
@@ -1042,6 +1115,7 @@ def render(stdscr, game: FreeCellGame) -> None:
     """Redraw the full screen."""
     stdscr.erase()
     max_y, max_x = stdscr.getmaxyx()
+    layout = compute_board_layout(max_x)
 
     title = "mcfreecell 0.1"
     if len(title) > max_x - 4:
@@ -1056,10 +1130,15 @@ def render(stdscr, game: FreeCellGame) -> None:
     )
 
     if game.visual_mode:
-        stdscr.addstr(0, 30, "-- VISUAL --", curses.color_pair(5) | curses.A_BOLD)
+        visual_text = "-- VISUAL --"
+        visual_x = min(max_x - len(visual_text) - 2, title_x + len(title) + 3)
+        if visual_x > title_x + len(title):
+            stdscr.addstr(
+                0, visual_x, visual_text, curses.color_pair(5) | curses.A_BOLD
+            )
 
-    draw_top_row(stdscr, game)
-    draw_columns(stdscr, game)
+    draw_top_row(stdscr, game, layout)
+    draw_columns(stdscr, game, layout)
     draw_held(stdscr, game, max_y)
     draw_status(stdscr, game, max_y)
     draw_help(stdscr, max_y)