git-gui: Preserve scroll position on reshow_diff.

It is especially useful for Stage/Unstage Line, because
they invoke full state scan and diff reload, which originally
would reset the scroll position to the top of the file.

Signed-off-by: Alexander Gavrilov <angavrilov@gmail.com>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
This commit is contained in:
Alexander Gavrilov 2008-07-27 10:35:38 +04:00 committed by Shawn O. Pearce
parent 7e09b1531f
commit 25b8fb1e49

View File

@ -19,6 +19,7 @@ proc clear_diff {} {
proc reshow_diff {} {
global file_states file_lists
global current_diff_path current_diff_side
global ui_diff
set p $current_diff_path
if {$p eq {}} {
@ -28,7 +29,8 @@ proc reshow_diff {} {
|| [lsearch -sorted -exact $file_lists($current_diff_side) $p] == -1} {
clear_diff
} else {
show_diff $p $current_diff_side
set save_pos [lindex [$ui_diff yview] 0]
show_diff $p $current_diff_side {} $save_pos
}
}
@ -52,7 +54,7 @@ A rescan will be automatically started to find other files which may have the sa
rescan ui_ready 0
}
proc show_diff {path w {lno {}}} {
proc show_diff {path w {lno {}} {scroll_pos {}}} {
global file_states file_lists
global is_3way_diff diff_active repo_config
global ui_diff ui_index ui_workdir
@ -151,6 +153,10 @@ proc show_diff {path w {lno {}}} {
$ui_diff conf -state disabled
set diff_active 0
unlock_index
if {$scroll_pos ne {}} {
update
$ui_diff yview moveto $scroll_pos
}
ui_ready
return
}
@ -190,10 +196,10 @@ proc show_diff {path w {lno {}}} {
-blocking 0 \
-encoding binary \
-translation binary
fileevent $fd readable [list read_diff $fd]
fileevent $fd readable [list read_diff $fd $scroll_pos]
}
proc read_diff {fd} {
proc read_diff {fd scroll_pos} {
global ui_diff diff_active
global is_3way_diff current_diff_header
@ -282,6 +288,10 @@ proc read_diff {fd} {
close $fd
set diff_active 0
unlock_index
if {$scroll_pos ne {}} {
update
$ui_diff yview moveto $scroll_pos
}
ui_ready
if {[$ui_diff index end] eq {2.0}} {