pax/booru-viewer
1
0
Fork 0
Code Issues Releases 18 Activity

Prefetch in all 4 directions (left, right, up, down)

Browse Source 
CDN downloads don't count against API rate limits so we can
safely prefetch all adjacent posts for instant navigation.
This commit is contained in:
pax 2026-04-05 00:32:04 -05:00
parent a9d177ee91
commit 5d48581f52
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
booru_viewer/gui/app.py
View File

@ -765,13 +765,13 @@ class BooruApp(QMainWindow):
self._prefetch_adjacent(index)
def _prefetch_adjacent(self, index: int) -> None:
"""Silently download adjacent posts with staggered delays."""
"""Prefetch posts in all 4 directions (left, right, up, down)."""
cols = self._grid._flow.columns
offsets = [1, -1, cols, -cols]
async def _prefetch_batch():
for i, offset in enumerate((1, -1)):
for offset in offsets:
adj = index + offset
if 0 <= adj < len(self._posts) and self._posts[adj].file_url:
if i > 0:
await asyncio.sleep(1)
try:
await download_image(self._posts[adj].file_url)
except Exception: