Prior commit (6ad8a190) did not properly handle overflow by long (9000 lines) message,
to address this issue, multiple changes were made:
- Add lines recalculation on win_redraw
- Move `prof_buff_t` struct to header file so its lines could be externally changed
- Call win_redraw once overflow is detected: it allows to recalculate sizes in lines and apply changes to the buffer
Refactor buffer trimming logic to use dynamic line counts (_lines per entry)
against PAD_SIZE (10k) instead of fixed entry count (MAX_BUFFER_SIZE=200). This
prevents premature cleanups for short messages, reduces scrolling disruptions
during history loads, and scales better with rendered content size.
Delete oldest/newest entry from opposite end only when total lines approach
ncurses pad limit, minimizing unnecessary deletions.
Simplify overflow warning log by removing unused MAX_BUFFER_SIZE reference.
Update buffer.c header for improved DX:
- Add detailed module overview explaining role (in-memory UI buffer vs. DB
persistence), key features (trimming, metadata), and integration (ncurses).
- Shorten copyright/license boilerplate to concise pointer (LICENSE ref).
- Add fork notice; preserve original copyrights per GPLv3.
Partially addresses #36 (stuck scroll mitigation via fewer cleanups)
Related to #36
This commit refines the existing logic in win_page_up() by:
- Improving comments to clearly explain the rationale behind adjusting
the scroll offset relative to the first buffer entry’s visual position,
helping future maintainers understand why this is necessary.
- Fixing offset recalculation to better handle cases where older messages
with variable heights are loaded from the DB, improving scroll smoothness.
- Changing the logging of negative *page_start values from warning to debug,
recognizing that this can be a normal scenario when insufficient history is loaded.
- Simplifying some conditionals and renaming variables for clearer intent.
No changes yet applied to win_page_down(), but similar improvements could
be considered in the future.
Overall, this enhances the robustness and user experience of scrolling up
in chat windows, while preserving existing functional logic.
* Fix some linter suggestions.
* Change some defines to `const` vars.
* Free buffer entries in the reverse order they were allocated.
Signed-off-by: Steffen Jaeckel <s@jaeckel.eu>
Before there was a problem of overscrolling:
when messages longer than y axis of the terminal are fetched from the DB,
profanity scroll "jumps" to the top, skipping some messages.
It's resolved by keeping messages' starting and ending line in the
internal profanity buffer, which allows to track proper message positions
and to adjust window position accordingly.
Message size is now tracked as part of the buffer's record in `_line`
variable, which allows calculation of the total buffer size, which
might be a part of the improved solution for the "underscrolling" problem,
if we are going to limit profanity's buffer size by amount of lines as
opposed to the limitation based on the amount of message which is currently
used.
Before adding a limitation by amount of lines, careful consideration is
required, as some users don't use history and their temporary message
history can be cut to minimal limit because of 1 long received/sent message.
Underscrolling problem was fixed in a previous commit
d7e46d64fe
Short recap of the problem:
Despite user scrolling to top/bottom of history,
factual position is offset from the intended location
Another feature of this commit is a minor change which adds fetching
message stanza IDs from the DB. It allows correcting messages
fetched from history.
Fixes https://github.com/profanity-im/profanity/issues/1934
Currently buffer is being redrawn on each DB fetch,
this causes a big waste of resources as on every page_up button click
we redraw 1200 messages (each message can be longer than 1 line),
commit will reduce buffer size to 200,
thus reducing amount of messages redrawn on each page up,
this is a temporary solution for a bigger problem.
- Add NetBSD as a recognized platform without -ldl.
- Allow building with NetBSD libcurses instead of ncurses.
- Portability to NetBSD sh - use POSIX '=' instead of '=='.
XEP-0184: Message Delivery Receipts, *requires* the id attribute.
Generally this is not the case.
For this reason the id was only present in the DeliveryReceipt struct
since it was only used for XEP-0184.
For https://github.com/profanity-im/profanity/issues/660 XEP-0313 MAM
and https://github.com/profanity-im/profanity/issues/805 XEP-0308 Last Message Correction
we will also need the id.
So in preparation for further work let's move the id to the general
ProfBuffEntry.
We will need to adapt code so that we actually always write the ID if we
receive one.
