Add option to configure cursor height

If set to 0 (the default), the height of the cursor is set to the
height of the line (as is the current behaviour).

client/common/common.c

@@ -197,6 +197,7 @@ usage(FILE *out, const char *name)
           " -n, --no-overlap      adjust geometry to not overlap with panels. (w)\n"
           " -m, --monitor         index of monitor where menu will appear. (wx)\n"
           " -H, --line-height     defines the height to make each menu line (0 = default height). (wx)\n"
+          " --ch                  defines the height of the cursor (0 = scales with line height). (wx)\n"
           " --fn                  defines the font to be used ('name [size]'). (wx)\n"
           " --tb                  defines the title background color. (wx)\n"
           " --tf                  defines the title foreground color. (wx)\n"
@@ -260,6 +261,7 @@ do_getopt(struct client *client, int *argc, char **argv[])
         { "no-overlap",  no_argument,       0, 'n' },
         { "monitor",     required_argument, 0, 'm' },
         { "line-height", required_argument, 0, 'H' },
+        { "ch",          required_argument, 0, 0x118 },
         { "fn",          required_argument, 0, 0x101 },
         { "tb",          required_argument, 0, 0x102 },
         { "tf",          required_argument, 0, 0x103 },
@@ -355,6 +357,9 @@ do_getopt(struct client *client, int *argc, char **argv[])
             case 'H':
                 client->line_height = strtol(optarg, NULL, 10);
                 break;
+            case 0x118:
+                client->cursor_height = strtol(optarg, NULL, 10);
+                break;
             case 0x101:
                 client->font = optarg;
                 break;
@@ -433,6 +438,7 @@ menu_with_options(struct client *client)
 
     bm_menu_set_font(menu, client->font);
     bm_menu_set_line_height(menu, client->line_height);
+    bm_menu_set_cursor_height(menu, client->cursor_height);
     bm_menu_set_title(menu, client->title);
     bm_menu_set_prefix(menu, client->prefix);
     bm_menu_set_filter_mode(menu, client->filter_mode);

client/common/common.h

@@ -13,6 +13,7 @@ struct client {
     const char *font;
     const char *initial_filter;
     uint32_t line_height;
+    uint32_t cursor_height;
     uint32_t lines;
     uint32_t selected;
     uint32_t monitor;

lib/bemenu.h

@@ -448,6 +448,23 @@ BM_PUBLIC void bm_menu_set_line_height(struct bm_menu *menu, uint32_t line_heigh
  */
 BM_PUBLIC uint32_t bm_menu_get_line_height(struct bm_menu *menu);
 
+/**
+ * Set height of cursor in pixels.
+ * Some renderers such as ncurses may ignore this when it does not make sense.
+ *
+ * @param menu bm_menu instance where to set cursor height.
+ * @param cursor_height 0 for default cursor height, > 0 for that many pixels.
+ */
+BM_PUBLIC void bm_menu_set_cursor_height(struct bm_menu *menu, uint32_t cursor_height);
+
+/**
+ * Get height of cursor in pixels.
+ *
+ * @param menu bm_menu instance where to get cursor height.
+ * @return uint32_t for max amount of vertical cursors to be shown.
+ */
+BM_PUBLIC uint32_t bm_menu_get_cursor_height(struct bm_menu *menu);
+
 /**
  * Set a hexadecimal color for element.
  *

lib/internal.h

@@ -238,6 +238,11 @@ struct bm_menu {
      */
     uint32_t line_height;
 
+    /**
+     * Cursor height.
+     */
+    uint32_t cursor_height;
+
     /**
      * Colors.
      */

lib/menu.c

@@ -296,6 +296,20 @@ bm_menu_get_line_height(struct bm_menu *menu)
     return menu->line_height;
 }
 
+void
+bm_menu_set_cursor_height(struct bm_menu *menu, uint32_t cursor_height)
+{
+    assert(menu);
+    menu->cursor_height = cursor_height;
+}
+
+uint32_t
+bm_menu_get_cursor_height(struct bm_menu *menu)
+{
+    assert(menu);
+    return menu->cursor_height;
+}
+
 bool
 bm_menu_set_color(struct bm_menu *menu, enum bm_color color, const char *hex)
 {

lib/renderers/cairo_renderer.h

@@ -25,6 +25,7 @@ struct cairo_paint {
     const char *font;
     int32_t baseline;
     uint32_t cursor;
+    uint32_t cursor_height;
     bool draw_cursor;
 
     struct box {
@@ -131,11 +132,12 @@ bm_cairo_draw_line_str(struct cairo *cairo, struct cairo_paint *paint, struct ca
     height = paint->box.h > 0 ? paint->box.h : height;
     int base = pango_layout_get_baseline(layout) / PANGO_SCALE;
 
+    uint32_t line_height = height + paint->box.by + paint->box.ty;
     cairo_set_source_rgba(cairo->cr, paint->bg.r, paint->bg.b, paint->bg.g, paint->bg.a);
     cairo_rectangle(cairo->cr,
             paint->pos.x - paint->box.lx, paint->pos.y - paint->box.ty,
             (paint->box.w > 0 ? paint->box.w : width) + paint->box.rx + paint->box.lx,
-            height + paint->box.by + paint->box.ty);
+            line_height);
     cairo_fill(cairo->cr);
 
     cairo_set_source_rgba(cairo->cr, paint->fg.r, paint->fg.b, paint->fg.g, paint->fg.a);
@@ -152,15 +154,16 @@ bm_cairo_draw_line_str(struct cairo *cairo, struct cairo_paint *paint, struct ca
             rect.width = result.x_advance * PANGO_SCALE;
         }
 
+        uint32_t cursor_height = fmin(paint->cursor_height == 0 ? line_height : paint->cursor_height, line_height);
         cairo_set_source_rgba(cairo->cr, paint->fg.r, paint->fg.b, paint->fg.g, paint->fg.a);
         cairo_rectangle(cairo->cr,
-                paint->pos.x + paint->box.lx + rect.x / PANGO_SCALE, paint->pos.y - paint->box.ty,
-                rect.width / PANGO_SCALE, height + paint->box.by + paint->box.ty);
+                paint->pos.x + paint->box.lx + rect.x / PANGO_SCALE, paint->pos.y - paint->box.ty + ((line_height - cursor_height) / 2),
+                rect.width / PANGO_SCALE, cursor_height);
         cairo_fill(cairo->cr);
 
         cairo_rectangle(cairo->cr,
                 paint->pos.x + paint->box.lx + rect.x / PANGO_SCALE, paint->pos.y - paint->box.ty,
-                rect.width / PANGO_SCALE, height + paint->box.by + paint->box.ty);
+                rect.width / PANGO_SCALE, line_height);
         cairo_clip(cairo->cr);
 
         cairo_set_source_rgba(cairo->cr, paint->bg.r, paint->bg.b, paint->bg.g, paint->bg.a);
@@ -172,7 +175,7 @@ bm_cairo_draw_line_str(struct cairo *cairo, struct cairo_paint *paint, struct ca
     g_object_unref(layout);
 
     result->x_advance = width + paint->box.rx;
-    result->height = height + paint->box.by + paint->box.ty;
+    result->height = line_height;
 
     cairo_identity_matrix(cairo->cr);
     return true;
@@ -251,6 +254,7 @@ bm_cairo_paint(struct cairo *cairo, uint32_t width, uint32_t max_height, const s
     bm_cairo_color_from_menu_color(menu, BM_COLOR_FILTER_BG, &paint.bg);
     paint.draw_cursor = true;
     paint.cursor = menu->cursor;
+    paint.cursor_height = menu->cursor_height;
     paint.pos = (struct pos){ (menu->title ? 2 : 0) + result.x_advance, vpadding };
     paint.box = (struct box){ (menu->title ? 2 : 4), 0, vpadding, vpadding, width - paint.pos.x, ascii_height };