Add visual indication for non-red stacks containing a red piece

[dvonn] / dvonn.c

diff --git a/dvonn.c b/dvonn.c
index 1442923c0acf27243f9ce42fc6de2766abb453bf..806a8e69247c289f3a712d12293b610f54e43384 100644 (file)
--- a/dvonn.c
+++ b/dvonn.c
@@ -72,6 +72,8 @@ on_delete_event_quit (GtkWidget  *widget,
 /* Something like buff */
 #define BACKGROUND_COLOR 0.89, 0.70, 0.40
 
+#define RED_RING_COLOR 0.8, 0.2, 0.2
+
 /* Relative to a unit square. */
 #define RING_OUTER_RADIUS 0.4
 #define RING_INNER_RADIUS 0.2
@@ -350,6 +352,14 @@ on_expose_event_draw (GtkWidget            *widget,
            cairo_translate(cr,
                            x + (y - DVONN_BOARD_Y_SIZE/2) / 2.0,
                            M_SQRT1_2 * y);
+           if (cell.contains_red && cell.type != DVONN_CELL_RED) {
+               cairo_new_sub_path (cr);
+               cairo_arc (cr, 0.5, 0.5,
+                          (RING_INNER_RADIUS + RING_OUTER_RADIUS)/2.0,
+                          0, 2 * M_PI);
+               cairo_set_source_rgb (cr, RED_RING_COLOR);
+               cairo_fill (cr);
+           }
            ring_path (cr);
            switch (cell.type) {
            case DVONN_CELL_WHITE:
@@ -359,7 +369,7 @@ on_expose_event_draw (GtkWidget             *widget,
                cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
                break;
            case DVONN_CELL_RED:
-               cairo_set_source_rgb (cr, 0.8, 0.2, 0.2); /* red */
+               cairo_set_source_rgb (cr, RED_RING_COLOR);
                break;
            case DVONN_CELL_EMPTY:
            default:
@@ -375,10 +385,10 @@ on_expose_event_draw (GtkWidget           *widget,
            }
            cairo_fill (cr);
 
-           if (game->board.cells[x][y].height) {
+           if (game->board.cells[x][y].height > 1) {
                PangoLayout *height;
                cairo_move_to (cr,
-                              0.5 - 0.8 * RING_INNER_RADIUS * cos (M_PI_4),
+                              0.5 - 0.7 * RING_INNER_RADIUS * cos (M_PI_4),
                               0.5 - 1.2 * RING_INNER_RADIUS * sin (M_PI_4));
                height = _create_layout_printf (cr, game->font, "%d",
                                                game->board.cells[x][y].height);