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workspace name: match original bold shadow text rendering 

Draw white text at 5x5 offsets to build a shape mask (like the
original XShape-based approach), then draw centered text at (2,2)
and apply the mask as alpha. This gives the same outlined text
appearance as the X11 version.
This commit is contained in:
lkn 2026-06-23 20:50:52 +02:00
parent 6ae9ad3dc5
commit f96c847cf7
1 changed files with 23 additions and 4 deletions
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27
src/backend/wayland/wl_badge.c
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@ -38,15 +38,34 @@ wl_workspace_badge_render(WScreen *scr, WNativeWindow badge_win,
W_RegisterBacking(fb->id, fb->image);
}
/* Fill transparent */
/* Build shape mask: draw white text at 5x5 offsets on black.
* Any pixel that becomes non-black is part of the text outline. */
uint32_t *px = pixman_image_get_data(fb->image);
for (int i = 0; i < width * height; i++)
px[i] = 0x00000000;
int npx = width * height;
for (int i = 0; i < npx; i++)
px[i] = 0xFF000000;
/* Draw white text */
for (int x = 0; x <= 4; x++)
for (int y = 0; y <= 4; y++)
WMDrawString(scr->wmscreen, (WMDrawable)badge_win, scr->white,
scr->workspace_name_font, x, y, name, name_len);
/* Save mask: pixels with any white component are visible */
uint8_t *mask = wmalloc(npx);
for (int i = 0; i < npx; i++)
mask[i] = (px[i] & 0x00FFFFFF) ? 0xFF : 0x00;
/* Draw final text: white on black at center (2,2) */
for (int i = 0; i < npx; i++)
px[i] = 0xFF000000;
WMDrawString(scr->wmscreen, (WMDrawable)badge_win, scr->white,
scr->workspace_name_font, 2, 2, name, name_len);
/* Apply mask as alpha channel */
for (int i = 0; i < npx; i++)
px[i] = (px[i] & 0x00FFFFFF) | ((uint32_t)mask[i] << 24);
wfree(mask);
/* Update scene buffer */
if (fb->scene_buf)
wlr_scene_buffer_set_buffer_with_damage(fb->scene_buf, &fb->base, NULL);