pkgs/foot-transparent: rebase around latest commit; fix transparent margins

patches/0001-foot-transparent.patch

@@ -1,18 +1,19 @@
 diff --git a/CHANGELOG.md b/CHANGELOG.md
-index 84a8aef4..9332efed 100644
+index 9ceab4d5..146e7992 100644
 --- a/CHANGELOG.md
 +++ b/CHANGELOG.md
-@@ -63,7 +63,7 @@
+@@ -334,7 +334,8 @@
    instead of the one least recently.
  * Starlight theme (the default theme) updated to [V4][starlight-v4]
  * Background transparency (alpha) is now disabled in fullscreened
 -  windows ([#1416][1416]).
-+  windows ([#1416][1416]) by default but can be enabled with `fullscreen_alpha`.
++  windows ([#1416][1416]) by default but can be enabled with
++  `fullscreen_alpha`.
  * Foot server systemd units now use the standard
    graphical-session.target ([#1281][1281]).
  * If `$XDG_RUNTIME_DIR/foot-$WAYLAND_DISPLAY.sock` does not exist,
 diff --git a/meson.build b/meson.build
-index aeb2daa6..6a19db47 100644
+index 719352bc..eb38c0f8 100644
 --- a/meson.build
 +++ b/meson.build
 @@ -73,6 +73,9 @@ add_project_arguments(
@@ -25,16 +26,16 @@ index aeb2daa6..6a19db47 100644
    cc.get_supported_arguments(
      ['-pedantic',
       '-fstrict-aliasing',
-@@ -388,6 +391,7 @@ summary(
+@@ -374,6 +377,7 @@ summary(
      'Documentation': scdoc.found(),
      'Themes': get_option('themes'),
      'IME': get_option('ime'),
 +    'Fullscreen alpha': get_option('fullscreen_alpha'),
      'Grapheme clustering': utf8proc.found(),
-     'Wayland: xdg-activation-v1': xdg_activation,
+     'utmp backend': utmp_backend,
-     'Wayland: fractional-scale-v1': fractional_scale,
+     'utmp helper default path': utmp_default_helper_path,
 diff --git a/meson_options.txt b/meson_options.txt
-index d16e23ae..153c5453 100644
+index ab7a07be..7919431e 100644
 --- a/meson_options.txt
 +++ b/meson_options.txt
 @@ -7,6 +7,9 @@ option('themes', type: 'boolean', value: true,
@@ -48,16 +49,16 @@ index d16e23ae..153c5453 100644
         description: 'Enables grapheme clustering using libutf8proc. Requires fcft with harfbuzz support to be useful.')
 
 diff --git a/render.c b/render.c
-index 48957a0a..21f335eb 100644
+index 91472027..847984a9 100644
 --- a/render.c
 +++ b/render.c
-@@ -534,6 +534,13 @@ render_cell(struct terminal *term, pixman_image_t *pix,
+@@ -525,6 +525,13 @@ render_cell(struct terminal *term, pixman_image_t *pix, pixman_region32_t *damag
          }
 
          else if (cell->attrs.bg_src == COLOR_DEFAULT) {
 +#if defined(FOOT_FULLSCREEN_ALPHA_ENABLED) && FOOT_FULLSCREEN_ALPHA_ENABLED
 +            /*
-+             * Note: I don't care about the stupid ass wayland
++             * Note: I don't care about the stupid ass Wayland
 +             * protocol I want transparent fullscreen windows.
 +             */
 +            alpha = term->colors.alpha;
@@ -65,7 +66,7 @@ index 48957a0a..21f335eb 100644
              if (term->window->is_fullscreen) {
                  /*
                   * Note: disable transparency when fullscreened.
-@@ -559,6 +566,7 @@ render_cell(struct terminal *term, pixman_image_t *pix,
+@@ -562,6 +569,7 @@ render_cell(struct terminal *term, pixman_image_t *pix, pixman_region32_t *damag
              } else {
                  alpha = term->colors.alpha;
              }
@@ -73,13 +74,37 @@ index 48957a0a..21f335eb 100644
          }
      }
 
-@@ -2163,7 +2171,7 @@ render_csd_button_maximize_maximized(
+@@ -900,6 +908,10 @@ render_margin(struct terminal *term, struct buffer *buf,
-             { x_margin + shrink, y_margin + thick, thick, width - 2 * thick - shrink },
+     const int bmargin = term->height - term->margins.bottom;
-             { x_margin + width - thick - shrink, y_margin + thick, thick, width - 2 * thick - shrink },
+     const int line_count = end_line - start_line;
-             { x_margin + shrink, y_margin + width - thick - shrink, width - 2 * shrink, thick }});
--
-+
-     pixman_image_unref(src);
 
++#if defined(FOOT_FULLSCREEN_ALPHA_ENABLED) && FOOT_FULLSCREEN_ALPHA_ENABLED
++    uint32_t _bg = !term->reverse ? term->colors.bg : term->colors.fg;
++    pixman_color_t bg = color_hex_to_pixman_with_alpha(_bg, term->colors.alpha);
++#else
+     const uint32_t _bg = !term->reverse ? term->colors.bg : term->colors.fg;
+     uint16_t alpha = term->colors.alpha;
+
+@@ -909,6 +921,7 @@ render_margin(struct terminal *term, struct buffer *buf,
      }
 
+     pixman_color_t bg = color_hex_to_pixman_with_alpha(_bg, alpha);
++#endif
+
+     pixman_image_fill_rectangles(
+         PIXMAN_OP_SRC, buf->pix[0], &bg, 4,
+@@ -2817,8 +2830,14 @@ grid_render(struct terminal *term)
+     xassert(term->height > 0);
+
+     struct buffer_chain *chain = term->render.chains.grid;
++
++#if defined(FOOT_FULLSCREEN_ALPHA_ENABLED) && FOOT_FULLSCREEN_ALPHA_ENABLED
++    bool use_alpha = term->colors.alpha != 0xffff;
++#else
+     bool use_alpha = !term->window->is_fullscreen &&
+                      term->colors.alpha != 0xffff;
++#endif
++
+     struct buffer *buf = shm_get_buffer(
+         chain, term->width, term->height, use_alpha);
+