theme: Refactor xresource wallpaper to expose the vectorial logo

themes/xresources/assets.lua

@@ -46,23 +46,8 @@ function theme_assets.taglist_squares_unsel(size, fg)
     return img
 end
 
-
-function theme_assets.wallpaper(bg, fg, alt_fg, s)
-    s = s or screen.primary
-    local height = s.workarea.height
-    local width = s.workarea.width
-    local img = cairo.RecordingSurface(cairo.Content.COLOR,
-        cairo.Rectangle { x = 0, y = 0, width = width, height = height })
-    local cr = cairo.Context(img)
-
-    local letter_size = height/10
-    local letter_line = letter_size/18
-    local letter_gap = letter_size/6
-    local letter_start_x = width - width / 10
-    local letter_start_y = height / 10
-
-
-    local function make_letter(n, lines, color)
+local function make_letter(cr, n, lines, size, bg, fg, alt_fg)
+    local letter_gap  = size/6
 
     local function make_line(coords)
         for i, coord in ipairs(coords) do
@@ -76,79 +61,124 @@ function theme_assets.wallpaper(bg, fg, alt_fg, s)
     end
 
     lines = lines or {}
-        color = color or fg
+    color = alt_fg or fg
     cr:set_source(gears.color(color))
     cr:rectangle(
-            letter_start_x, letter_start_y+(letter_size+letter_gap)*n,
-            letter_size, letter_size
+        0, (size+letter_gap)*n,
+        size, size
     )
     cr:fill()
+
+    if bg then
         cr:set_source(gears.color(bg))
-        for _, line in ipairs(lines) do
-            cr:move_to(letter_start_x, letter_start_y+(letter_size+letter_gap)*n)
-            make_line(line)
-        end
+    else
+        cr:set_operator(cairo.Operator.CLEAR)
     end
 
-    -- bg
-    cr:set_source(gears.color(bg))
-    cr:paint()
+    for _, line in ipairs(lines) do
+        cr:move_to(0, (size+letter_gap)*n)
+        make_line(line)
+    end
+
+    cr:set_operator(cairo.Operator.OVER)
+end
+
+function theme_assets.gen_awesome_name(cr, width, height, bg, fg, alt_fg, vertical)
+    local ls = height/10 -- letter_size
+    local letter_line = ls/18
+
     cr:set_line_width(letter_line)
-    local ls = letter_size
+
     -- a
-    make_letter(0, { {
+    make_letter(cr, 0, { {
         { 0, ls/3 },
         { ls*2/3, 0 },
     }, {
         { ls/3, ls*2/3 },
         { ls/3, 0 },
         { 0, ls/3 },
-    } }, alt_fg)
+    } }, ls, bg, fg, alt_fg)
     -- w
-    make_letter(1, { {
+    make_letter(cr, 1, { {
         { ls/3, 0 },
         { 0,ls*2/3 },
     }, {
         { ls*2/3, 0 },
         { 0,ls*2/3 },
-    } })
+    } }, ls, bg, fg)
     -- e
-    make_letter(2, { {
+    make_letter(cr, 2, { {
         { ls/3, ls/3 },
         { ls*2/3, 0 },
     }, {
         { ls/3, ls*2/3 },
         { ls*2/3, 0 },
-    } })
+    } }, ls, bg, fg)
     -- s
-    make_letter(3, { {
+    make_letter(cr, 3, { {
         { ls/3, ls/3 },
         { ls*2/3, 0 },
     }, {
         { 0, ls*2/3 },
         { ls*2/3, 0 },
-    } })
+    } }, ls, bg, fg)
     -- o
-    make_letter(4, { {
+    make_letter(cr, 4, { {
         { ls/2, ls/3 },
         { 0, ls/3 },
-    } })
+    } }, ls, bg, fg)
     -- m
-    make_letter(5, { {
+    make_letter(cr, 5, { {
         { ls/3, ls/3 },
         { 0,ls*2/3 },
     }, {
         { ls*2/3, ls/3 },
         { 0,ls*2/3 },
-    } })
+    } }, ls, bg, fg)
     -- e
-    make_letter(6, { {
+    make_letter(cr, 6, { {
         { ls/3, ls/3 },
         { ls*2/3, 0 },
     }, {
         { ls/3, ls*2/3 },
         { ls*2/3, 0 },
-    } })
+    } }, ls, bg, fg)
+end
+
+function theme_assets.gen_logo(cr, width, height, bg, fg)
+    local ls = math.min(width, height)
+
+    local letter_line = ls/18
+
+    cr:set_line_width(letter_line)
+
+    make_letter(cr, 0, { {
+        { 0, ls/3 },
+        { ls*2/3, 0 },
+    }, {
+        { ls/3, ls*2/3 },
+        { ls/3, 0 },
+        { 0, ls/3 },
+    } }, ls, bg, fg)
+end
+
+function theme_assets.wallpaper(bg, fg, alt_fg, s)
+    s = s or screen.primary
+    local height = s.workarea.height
+    local width = s.workarea.width
+    local img = cairo.RecordingSurface(cairo.Content.COLOR,
+        cairo.Rectangle { x = 0, y = 0, width = width, height = height })
+    local cr = cairo.Context(img)
+
+    local letter_start_x = width - width / 10
+    local letter_start_y = height / 10
+    cr:translate(letter_start_x, letter_start_y)
+
+    -- background
+    cr:set_source(gears.color(bg))
+    cr:paint()
+
+    theme_assets.gen_awesome_name(cr, width, height, bg, fg, alt_fg, true)
 
     return img
 end