feat: add a title icon to every labelled card

Add card.ICON and a card.title helper that draws the glyph in the
highlight colour before the label, at the label's own size. The eight
labelled cards use it, in both the fit_unit width measurement and the
draw, so the icon cannot overrun a narrow cell. Clock (no label) and
weather (condition glyph already) are unchanged, and the no-data notice
titles stay text-only.

Codepoints were chosen against a rendered contact sheet, not fontconfig
alone, since a wrong codepoint draws a plausible neighbour.

1 files changed, 4 insertions, 3 deletions

diff --git a/widgets/slackware.lua b/widgets/slackware.lua
index f9afb70..9686f8a 100644
--- a/widgets/slackware.lua
+++ b/widgets/slackware.lua
@@ -74,7 +74,8 @@ function M.draw(cr, rect, colors)
   -- Fluid type: the height budget grows the content to fill the cell, the
   -- measured width fit pulls it back where a row would overrun.
   local groups = {
-    { { 'SLACKWARE', card.FONT_MONO, LABEL_F }, { age_txt, card.FONT_HEAVY, BIG_F } },
+    { { card.title_str(card.ICON.slackware, 'SLACKWARE'), card.FONT_MONO, LABEL_F },
+      { age_txt, card.FONT_HEAVY, BIG_F } },
   }
   for _, r in ipairs(rows) do
     groups[#groups + 1] = { { r[1], card.FONT_MONO, ROW_F },
@@ -90,8 +91,8 @@ function M.draw(cr, rect, colors)
   card.text_right(cr, inner.x + inner.w, inner.y + S * BIG_F, age_txt)
 
   card.font(cr, card.FONT_MONO, label_size, false)
-  card.rgba(cr, colors.label)
-  card.text(cr, inner.x, inner.y + label_size, 'SLACKWARE')
+  card.title(cr, inner.x, inner.y + label_size, card.ICON.slackware,
+    'SLACKWARE', colors)
 
   local ey = inner.y + S * BIG_F + row_size * 1.6
   local step = row_size * 2.0