Merge git://repo.or.cz/git-gui
[git] / git-gui / lib / blame.tcl
1 # git-gui blame viewer
2 # Copyright (C) 2006, 2007 Shawn Pearce
3
4 class blame {
5
6 image create photo ::blame::img_back_arrow -data {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}
7
8 # Persistant data (survives loads)
9 #
10 field history {}; # viewer history: {commit path}
11 field header    ; # array commit,key -> header field
12
13 # Tk UI control paths
14 #
15 field w          ; # top window in this viewer
16 field w_back     ; # our back button
17 field w_path     ; # label showing the current file path
18 field w_columns  ; # list of all column widgets in the viewer
19 field w_line     ; # text column: all line numbers
20 field w_amov     ; # text column: annotations + move tracking
21 field w_asim     ; # text column: annotations (simple computation)
22 field w_file     ; # text column: actual file data
23 field w_cviewer  ; # pane showing commit message
24 field status     ; # status mega-widget instance
25 field old_height ; # last known height of $w.file_pane
26
27 # Tk UI colors
28 #
29 variable active_color #c0edc5
30 variable group_colors {
31         #d6d6d6
32         #e1e1e1
33         #ececec
34 }
35
36 # Switches for original location detection
37 #
38 variable original_options [list -C -C]
39 if {[git-version >= 1.5.3]} {
40         lappend original_options -w ; # ignore indentation changes
41 }
42
43 # Current blame data; cleared/reset on each load
44 #
45 field commit               ; # input commit to blame
46 field path                 ; # input filename to view in $commit
47
48 field current_fd        {} ; # background process running
49 field highlight_line    -1 ; # current line selected
50 field highlight_column  {} ; # current commit column selected
51 field highlight_commit  {} ; # sha1 of commit selected
52
53 field total_lines       0  ; # total length of file
54 field blame_lines       0  ; # number of lines computed
55 field amov_data            ; # list of {commit origfile origline}
56 field asim_data            ; # list of {commit origfile origline}
57
58 field r_commit             ; # commit currently being parsed
59 field r_orig_line          ; # original line number
60 field r_final_line         ; # final line number
61 field r_line_count         ; # lines in this region
62
63 field tooltip_wm        {} ; # Current tooltip toplevel, if open
64 field tooltip_t         {} ; # Text widget in $tooltip_wm
65 field tooltip_timer     {} ; # Current timer event for our tooltip
66 field tooltip_commit    {} ; # Commit(s) in tooltip
67
68 constructor new {i_commit i_path} {
69         global cursor_ptr
70         variable active_color
71         variable group_colors
72
73         set commit $i_commit
74         set path   $i_path
75
76         make_toplevel top w
77         wm title $top [append "[appname] ([reponame]): " [mc "File Viewer"]]
78
79         frame $w.header -background gold
80         label $w.header.commit_l \
81                 -text [mc "Commit:"] \
82                 -background gold \
83                 -foreground black \
84                 -anchor w \
85                 -justify left
86         set w_back $w.header.commit_b
87         label $w_back \
88                 -image ::blame::img_back_arrow \
89                 -borderwidth 0 \
90                 -relief flat \
91                 -state disabled \
92                 -background gold \
93                 -foreground black \
94                 -activebackground gold
95         bind $w_back <Button-1> "
96                 if {\[$w_back cget -state\] eq {normal}} {
97                         [cb _history_menu]
98                 }
99                 "
100         label $w.header.commit \
101                 -textvariable @commit \
102                 -background gold \
103                 -foreground black \
104                 -anchor w \
105                 -justify left
106         label $w.header.path_l \
107                 -text [mc "File:"] \
108                 -background gold \
109                 -foreground black \
110                 -anchor w \
111                 -justify left
112         set w_path $w.header.path
113         label $w_path \
114                 -background gold \
115                 -foreground black \
116                 -anchor w \
117                 -justify left
118         pack $w.header.commit_l -side left
119         pack $w_back -side left
120         pack $w.header.commit -side left
121         pack $w_path -fill x -side right
122         pack $w.header.path_l -side right
123
124         panedwindow $w.file_pane -orient vertical
125         frame $w.file_pane.out
126         frame $w.file_pane.cm
127         $w.file_pane add $w.file_pane.out \
128                 -sticky nsew \
129                 -minsize 100 \
130                 -height 100 \
131                 -width 100
132         $w.file_pane add $w.file_pane.cm \
133                 -sticky nsew \
134                 -minsize 25 \
135                 -height 25 \
136                 -width 100
137
138         set w_line $w.file_pane.out.linenumber_t
139         text $w_line \
140                 -takefocus 0 \
141                 -highlightthickness 0 \
142                 -padx 0 -pady 0 \
143                 -background white \
144                 -foreground black \
145                 -borderwidth 0 \
146                 -state disabled \
147                 -wrap none \
148                 -height 40 \
149                 -width 6 \
150                 -font font_diff
151         $w_line tag conf linenumber -justify right -rmargin 5
152
153         set w_amov $w.file_pane.out.amove_t
154         text $w_amov \
155                 -takefocus 0 \
156                 -highlightthickness 0 \
157                 -padx 0 -pady 0 \
158                 -background white \
159                 -foreground black \
160                 -borderwidth 0 \
161                 -state disabled \
162                 -wrap none \
163                 -height 40 \
164                 -width 5 \
165                 -font font_diff
166         $w_amov tag conf author_abbr -justify right -rmargin 5
167         $w_amov tag conf curr_commit
168         $w_amov tag conf prior_commit -foreground blue -underline 1
169         $w_amov tag bind prior_commit \
170                 <Button-1> \
171                 "[cb _load_commit $w_amov @amov_data @%x,%y];break"
172
173         set w_asim $w.file_pane.out.asimple_t
174         text $w_asim \
175                 -takefocus 0 \
176                 -highlightthickness 0 \
177                 -padx 0 -pady 0 \
178                 -background white \
179                 -foreground black \
180                 -borderwidth 0 \
181                 -state disabled \
182                 -wrap none \
183                 -height 40 \
184                 -width 4 \
185                 -font font_diff
186         $w_asim tag conf author_abbr -justify right
187         $w_asim tag conf curr_commit
188         $w_asim tag conf prior_commit -foreground blue -underline 1
189         $w_asim tag bind prior_commit \
190                 <Button-1> \
191                 "[cb _load_commit $w_asim @asim_data @%x,%y];break"
192
193         set w_file $w.file_pane.out.file_t
194         text $w_file \
195                 -takefocus 0 \
196                 -highlightthickness 0 \
197                 -padx 0 -pady 0 \
198                 -background white \
199                 -foreground black \
200                 -borderwidth 0 \
201                 -state disabled \
202                 -wrap none \
203                 -height 40 \
204                 -width 80 \
205                 -xscrollcommand [list $w.file_pane.out.sbx set] \
206                 -font font_diff
207
208         set w_columns [list $w_amov $w_asim $w_line $w_file]
209
210         scrollbar $w.file_pane.out.sbx \
211                 -orient h \
212                 -command [list $w_file xview]
213         scrollbar $w.file_pane.out.sby \
214                 -orient v \
215                 -command [list scrollbar2many $w_columns yview]
216         eval grid $w_columns $w.file_pane.out.sby -sticky nsew
217         grid conf \
218                 $w.file_pane.out.sbx \
219                 -column [expr {[llength $w_columns] - 1}] \
220                 -sticky we
221         grid columnconfigure \
222                 $w.file_pane.out \
223                 [expr {[llength $w_columns] - 1}] \
224                 -weight 1
225         grid rowconfigure $w.file_pane.out 0 -weight 1
226
227         set w_cviewer $w.file_pane.cm.t
228         text $w_cviewer \
229                 -background white \
230                 -foreground black \
231                 -borderwidth 0 \
232                 -state disabled \
233                 -wrap none \
234                 -height 10 \
235                 -width 80 \
236                 -xscrollcommand [list $w.file_pane.cm.sbx set] \
237                 -yscrollcommand [list $w.file_pane.cm.sby set] \
238                 -font font_diff
239         $w_cviewer tag conf still_loading \
240                 -font font_uiitalic \
241                 -justify center
242         $w_cviewer tag conf header_key \
243                 -tabs {3c} \
244                 -background $active_color \
245                 -font font_uibold
246         $w_cviewer tag conf header_val \
247                 -background $active_color \
248                 -font font_ui
249         $w_cviewer tag raise sel
250         scrollbar $w.file_pane.cm.sbx \
251                 -orient h \
252                 -command [list $w_cviewer xview]
253         scrollbar $w.file_pane.cm.sby \
254                 -orient v \
255                 -command [list $w_cviewer yview]
256         pack $w.file_pane.cm.sby -side right -fill y
257         pack $w.file_pane.cm.sbx -side bottom -fill x
258         pack $w_cviewer -expand 1 -fill both
259
260         set status [::status_bar::new $w.status]
261
262         menu $w.ctxm -tearoff 0
263         $w.ctxm add command \
264                 -label [mc "Copy Commit"] \
265                 -command [cb _copycommit]
266
267         foreach i $w_columns {
268                 for {set g 0} {$g < [llength $group_colors]} {incr g} {
269                         $i tag conf color$g -background [lindex $group_colors $g]
270                 }
271
272                 $i conf -cursor $cursor_ptr
273                 $i conf -yscrollcommand [list many2scrollbar \
274                         $w_columns yview $w.file_pane.out.sby]
275                 bind $i <Button-1> "
276                         [cb _hide_tooltip]
277                         [cb _click $i @%x,%y]
278                         focus $i
279                 "
280                 bind $i <Any-Motion>  [cb _show_tooltip $i @%x,%y]
281                 bind $i <Any-Enter>   [cb _hide_tooltip]
282                 bind $i <Any-Leave>   [cb _hide_tooltip]
283                 bind_button3 $i "
284                         [cb _hide_tooltip]
285                         set cursorX %x
286                         set cursorY %y
287                         set cursorW %W
288                         tk_popup $w.ctxm %X %Y
289                 "
290                 bind $i <Shift-Tab> "[list focus $w_cviewer];break"
291                 bind $i <Tab>       "[list focus $w_cviewer];break"
292         }
293
294         foreach i [concat $w_columns $w_cviewer] {
295                 bind $i <Key-Up>        {catch {%W yview scroll -1 units};break}
296                 bind $i <Key-Down>      {catch {%W yview scroll  1 units};break}
297                 bind $i <Key-Left>      {catch {%W xview scroll -1 units};break}
298                 bind $i <Key-Right>     {catch {%W xview scroll  1 units};break}
299                 bind $i <Key-k>         {catch {%W yview scroll -1 units};break}
300                 bind $i <Key-j>         {catch {%W yview scroll  1 units};break}
301                 bind $i <Key-h>         {catch {%W xview scroll -1 units};break}
302                 bind $i <Key-l>         {catch {%W xview scroll  1 units};break}
303                 bind $i <Control-Key-b> {catch {%W yview scroll -1 pages};break}
304                 bind $i <Control-Key-f> {catch {%W yview scroll  1 pages};break}
305         }
306
307         bind $w_cviewer <Shift-Tab> "[list focus $w_file];break"
308         bind $w_cviewer <Tab>       "[list focus $w_file];break"
309         bind $w_cviewer <Button-1> [list focus $w_cviewer]
310         bind $w_file    <Visibility> [list focus $w_file]
311
312         grid configure $w.header -sticky ew
313         grid configure $w.file_pane -sticky nsew
314         grid configure $w.status -sticky ew
315         grid columnconfigure $top 0 -weight 1
316         grid rowconfigure $top 0 -weight 0
317         grid rowconfigure $top 1 -weight 1
318         grid rowconfigure $top 2 -weight 0
319
320         set req_w [winfo reqwidth  $top]
321         set req_h [winfo reqheight $top]
322         set scr_h [expr {[winfo screenheight $top] - 100}]
323         if {$req_w < 600} {set req_w 600}
324         if {$req_h < $scr_h} {set req_h $scr_h}
325         set g "${req_w}x${req_h}"
326         wm geometry $top $g
327         update
328
329         set old_height [winfo height $w.file_pane]
330         $w.file_pane sash place 0 \
331                 [lindex [$w.file_pane sash coord 0] 0] \
332                 [expr {int($old_height * 0.70)}]
333         bind $w.file_pane <Configure> \
334         "if {{$w.file_pane} eq {%W}} {[cb _resize %h]}"
335
336         _load $this {}
337 }
338
339 method _load {jump} {
340         variable group_colors
341
342         _hide_tooltip $this
343
344         if {$total_lines != 0 || $current_fd ne {}} {
345                 if {$current_fd ne {}} {
346                         catch {close $current_fd}
347                         set current_fd {}
348                 }
349
350                 foreach i $w_columns {
351                         $i conf -state normal
352                         $i delete 0.0 end
353                         foreach g [$i tag names] {
354                                 if {[regexp {^g[0-9a-f]{40}$} $g]} {
355                                         $i tag delete $g
356                                 }
357                         }
358                         $i conf -state disabled
359                 }
360
361                 $w_cviewer conf -state normal
362                 $w_cviewer delete 0.0 end
363                 $w_cviewer conf -state disabled
364
365                 set highlight_line -1
366                 set highlight_column {}
367                 set highlight_commit {}
368                 set total_lines 0
369         }
370
371         if {$history eq {}} {
372                 $w_back conf -state disabled
373         } else {
374                 $w_back conf -state normal
375         }
376
377         # Index 0 is always empty.  There is never line 0 as
378         # we use only 1 based lines, as that matches both with
379         # git-blame output and with Tk's text widget.
380         #
381         set amov_data [list [list]]
382         set asim_data [list [list]]
383
384         $status show [mc "Reading %s..." "$commit:[escape_path $path]"]
385         $w_path conf -text [escape_path $path]
386         if {$commit eq {}} {
387                 set fd [open $path r]
388                 fconfigure $fd -eofchar {}
389         } else {
390                 set fd [git_read cat-file blob "$commit:$path"]
391         }
392         fconfigure $fd -blocking 0 -translation lf -encoding binary
393         fileevent $fd readable [cb _read_file $fd $jump]
394         set current_fd $fd
395 }
396
397 method _history_menu {} {
398         set m $w.backmenu
399         if {[winfo exists $m]} {
400                 $m delete 0 end
401         } else {
402                 menu $m -tearoff 0
403         }
404
405         for {set i [expr {[llength $history] - 1}]
406                 } {$i >= 0} {incr i -1} {
407                 set e [lindex $history $i]
408                 set c [lindex $e 0]
409                 set f [lindex $e 1]
410
411                 if {[regexp {^[0-9a-f]{40}$} $c]} {
412                         set t [string range $c 0 8]...
413                 } elseif {$c eq {}} {
414                         set t {Working Directory}
415                 } else {
416                         set t $c
417                 }
418                 if {![catch {set summary $header($c,summary)}]} {
419                         append t " $summary"
420                         if {[string length $t] > 70} {
421                                 set t [string range $t 0 66]...
422                         }
423                 }
424
425                 $m add command -label $t -command [cb _goback $i]
426         }
427         set X [winfo rootx $w_back]
428         set Y [expr {[winfo rooty $w_back] + [winfo height $w_back]}]
429         tk_popup $m $X $Y
430 }
431
432 method _goback {i} {
433         set dat [lindex $history $i]
434         set history [lrange $history 0 [expr {$i - 1}]]
435         set commit [lindex $dat 0]
436         set path [lindex $dat 1]
437         _load $this [lrange $dat 2 5]
438 }
439
440 method _read_file {fd jump} {
441         if {$fd ne $current_fd} {
442                 catch {close $fd}
443                 return
444         }
445
446         foreach i $w_columns {$i conf -state normal}
447         while {[gets $fd line] >= 0} {
448                 regsub "\r\$" $line {} line
449                 incr total_lines
450                 lappend amov_data {}
451                 lappend asim_data {}
452
453                 if {$total_lines > 1} {
454                         foreach i $w_columns {$i insert end "\n"}
455                 }
456
457                 $w_line insert end "$total_lines" linenumber
458                 $w_file insert end "$line"
459         }
460
461         set ln_wc [expr {[string length $total_lines] + 2}]
462         if {[$w_line cget -width] < $ln_wc} {
463                 $w_line conf -width $ln_wc
464         }
465
466         foreach i $w_columns {$i conf -state disabled}
467
468         if {[eof $fd]} {
469                 close $fd
470
471                 # If we don't force Tk to update the widgets *right now*
472                 # none of our jump commands will cause a change in the UI.
473                 #
474                 update
475
476                 if {[llength $jump] == 1} {
477                         set highlight_line [lindex $jump 0]
478                         $w_file see "$highlight_line.0"
479                 } elseif {[llength $jump] == 4} {
480                         set highlight_column [lindex $jump 0]
481                         set highlight_line [lindex $jump 1]
482                         $w_file xview moveto [lindex $jump 2]
483                         $w_file yview moveto [lindex $jump 3]
484                 }
485
486                 _exec_blame $this $w_asim @asim_data \
487                         [list] \
488                         [mc "Loading copy/move tracking annotations..."]
489         }
490 } ifdeleted { catch {close $fd} }
491
492 method _exec_blame {cur_w cur_d options cur_s} {
493         lappend options --incremental
494         if {$commit eq {}} {
495                 lappend options --contents $path
496         } else {
497                 lappend options $commit
498         }
499         lappend options -- $path
500         set fd [eval git_read --nice blame $options]
501         fconfigure $fd -blocking 0 -translation lf -encoding binary
502         fileevent $fd readable [cb _read_blame $fd $cur_w $cur_d]
503         set current_fd $fd
504         set blame_lines 0
505
506         $status start \
507                 $cur_s \
508                 [mc "lines annotated"]
509 }
510
511 method _read_blame {fd cur_w cur_d} {
512         upvar #0 $cur_d line_data
513         variable group_colors
514         variable original_options
515
516         if {$fd ne $current_fd} {
517                 catch {close $fd}
518                 return
519         }
520
521         $cur_w conf -state normal
522         while {[gets $fd line] >= 0} {
523                 if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
524                         cmit original_line final_line line_count]} {
525                         set r_commit     $cmit
526                         set r_orig_line  $original_line
527                         set r_final_line $final_line
528                         set r_line_count $line_count
529                 } elseif {[string match {filename *} $line]} {
530                         set file [string range $line 9 end]
531                         set n    $r_line_count
532                         set lno  $r_final_line
533                         set oln  $r_orig_line
534                         set cmit $r_commit
535
536                         if {[regexp {^0{40}$} $cmit]} {
537                                 set commit_abbr work
538                                 set commit_type curr_commit
539                         } elseif {$cmit eq $commit} {
540                                 set commit_abbr this
541                                 set commit_type curr_commit
542                         } else {
543                                 set commit_type prior_commit
544                                 set commit_abbr [string range $cmit 0 3]
545                         }
546
547                         set author_abbr {}
548                         set a_name {}
549                         catch {set a_name $header($cmit,author)}
550                         while {$a_name ne {}} {
551                                 if {$author_abbr ne {}
552                                         && [string index $a_name 0] eq {'}} {
553                                         regsub {^'[^']+'\s+} $a_name {} a_name
554                                 }
555                                 if {![regexp {^([[:upper:]])} $a_name _a]} break
556                                 append author_abbr $_a
557                                 unset _a
558                                 if {![regsub \
559                                         {^[[:upper:]][^\s]*\s+} \
560                                         $a_name {} a_name ]} break
561                         }
562                         if {$author_abbr eq {}} {
563                                 set author_abbr { |}
564                         } else {
565                                 set author_abbr [string range $author_abbr 0 3]
566                         }
567                         unset a_name
568
569                         set first_lno $lno
570                         while {
571                            $first_lno > 1
572                         && $cmit eq [lindex $line_data [expr {$first_lno - 1}] 0]
573                         && $file eq [lindex $line_data [expr {$first_lno - 1}] 1]
574                         } {
575                                 incr first_lno -1
576                         }
577
578                         set color {}
579                         if {$first_lno < $lno} {
580                                 foreach g [$w_file tag names $first_lno.0] {
581                                         if {[regexp {^color[0-9]+$} $g]} {
582                                                 set color $g
583                                                 break
584                                         }
585                                 }
586                         } else {
587                                 set i [lsort [concat \
588                                         [$w_file tag names "[expr {$first_lno - 1}].0"] \
589                                         [$w_file tag names "[expr {$lno + $n}].0"] \
590                                         ]]
591                                 for {set g 0} {$g < [llength $group_colors]} {incr g} {
592                                         if {[lsearch -sorted -exact $i color$g] == -1} {
593                                                 set color color$g
594                                                 break
595                                         }
596                                 }
597                         }
598                         if {$color eq {}} {
599                                 set color color0
600                         }
601
602                         while {$n > 0} {
603                                 set lno_e "$lno.0 lineend + 1c"
604                                 if {[lindex $line_data $lno] ne {}} {
605                                         set g [lindex $line_data $lno 0]
606                                         foreach i $w_columns {
607                                                 $i tag remove g$g $lno.0 $lno_e
608                                         }
609                                 }
610                                 lset line_data $lno [list $cmit $file $oln]
611
612                                 $cur_w delete $lno.0 "$lno.0 lineend"
613                                 if {$lno == $first_lno} {
614                                         $cur_w insert $lno.0 $commit_abbr $commit_type
615                                 } elseif {$lno == [expr {$first_lno + 1}]} {
616                                         $cur_w insert $lno.0 $author_abbr author_abbr
617                                 } else {
618                                         $cur_w insert $lno.0 { |}
619                                 }
620
621                                 foreach i $w_columns {
622                                         if {$cur_w eq $w_amov} {
623                                                 for {set g 0} \
624                                                         {$g < [llength $group_colors]} \
625                                                         {incr g} {
626                                                         $i tag remove color$g $lno.0 $lno_e
627                                                 }
628                                                 $i tag add $color $lno.0 $lno_e
629                                         }
630                                         $i tag add g$cmit $lno.0 $lno_e
631                                 }
632
633                                 if {$highlight_column eq $cur_w} {
634                                         if {$highlight_line == -1
635                                          && [lindex [$w_file yview] 0] == 0} {
636                                                 $w_file see $lno.0
637                                                 set highlight_line $lno
638                                         }
639                                         if {$highlight_line == $lno} {
640                                                 _showcommit $this $cur_w $lno
641                                         }
642                                 }
643
644                                 incr n -1
645                                 incr lno
646                                 incr oln
647                                 incr blame_lines
648                         }
649
650                         while {
651                            $cmit eq [lindex $line_data $lno 0]
652                         && $file eq [lindex $line_data $lno 1]
653                         } {
654                                 $cur_w delete $lno.0 "$lno.0 lineend"
655
656                                 if {$lno == $first_lno} {
657                                         $cur_w insert $lno.0 $commit_abbr $commit_type
658                                 } elseif {$lno == [expr {$first_lno + 1}]} {
659                                         $cur_w insert $lno.0 $author_abbr author_abbr
660                                 } else {
661                                         $cur_w insert $lno.0 { |}
662                                 }
663
664                                 if {$cur_w eq $w_amov} {
665                                         foreach i $w_columns {
666                                                 for {set g 0} \
667                                                         {$g < [llength $group_colors]} \
668                                                         {incr g} {
669                                                         $i tag remove color$g $lno.0 $lno_e
670                                                 }
671                                                 $i tag add $color $lno.0 $lno_e
672                                         }
673                                 }
674
675                                 incr lno
676                         }
677
678                 } elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
679                         set header($r_commit,$key) $data
680                 }
681         }
682         $cur_w conf -state disabled
683
684         if {[eof $fd]} {
685                 close $fd
686                 if {$cur_w eq $w_asim} {
687                         _exec_blame $this $w_amov @amov_data \
688                                 $original_options \
689                                 [mc "Loading original location annotations..."]
690                 } else {
691                         set current_fd {}
692                         $status stop [mc "Annotation complete."]
693                 }
694         } else {
695                 $status update $blame_lines $total_lines
696         }
697 } ifdeleted { catch {close $fd} }
698
699 method _click {cur_w pos} {
700         set lno [lindex [split [$cur_w index $pos] .] 0]
701         _showcommit $this $cur_w $lno
702 }
703
704 method _load_commit {cur_w cur_d pos} {
705         upvar #0 $cur_d line_data
706         set lno [lindex [split [$cur_w index $pos] .] 0]
707         set dat [lindex $line_data $lno]
708         if {$dat ne {}} {
709                 lappend history [list \
710                         $commit $path \
711                         $highlight_column \
712                         $highlight_line \
713                         [lindex [$w_file xview] 0] \
714                         [lindex [$w_file yview] 0] \
715                         ]
716                 set commit [lindex $dat 0]
717                 set path   [lindex $dat 1]
718                 _load $this [list [lindex $dat 2]]
719         }
720 }
721
722 method _showcommit {cur_w lno} {
723         global repo_config
724         variable active_color
725
726         if {$highlight_commit ne {}} {
727                 foreach i $w_columns {
728                         $i tag conf g$highlight_commit -background {}
729                         $i tag lower g$highlight_commit
730                 }
731         }
732
733         if {$cur_w eq $w_asim} {
734                 set dat [lindex $asim_data $lno]
735                 set highlight_column $w_asim
736         } else {
737                 set dat [lindex $amov_data $lno]
738                 set highlight_column $w_amov
739         }
740
741         $w_cviewer conf -state normal
742         $w_cviewer delete 0.0 end
743
744         if {$dat eq {}} {
745                 set cmit {}
746                 $w_cviewer insert end [mc "Loading annotation..."] still_loading
747         } else {
748                 set cmit [lindex $dat 0]
749                 set file [lindex $dat 1]
750
751                 foreach i $w_columns {
752                         $i tag conf g$cmit -background $active_color
753                         $i tag raise g$cmit
754                 }
755
756                 set author_name {}
757                 set author_email {}
758                 set author_time {}
759                 catch {set author_name $header($cmit,author)}
760                 catch {set author_email $header($cmit,author-mail)}
761                 catch {set author_time [format_date $header($cmit,author-time)]}
762
763                 set committer_name {}
764                 set committer_email {}
765                 set committer_time {}
766                 catch {set committer_name $header($cmit,committer)}
767                 catch {set committer_email $header($cmit,committer-mail)}
768                 catch {set committer_time [format_date $header($cmit,committer-time)]}
769
770                 if {[catch {set msg $header($cmit,message)}]} {
771                         set msg {}
772                         catch {
773                                 set fd [git_read cat-file commit $cmit]
774                                 fconfigure $fd -encoding binary -translation lf
775                                 if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
776                                         set enc utf-8
777                                 }
778                                 while {[gets $fd line] > 0} {
779                                         if {[string match {encoding *} $line]} {
780                                                 set enc [string tolower [string range $line 9 end]]
781                                         }
782                                 }
783                                 set msg [read $fd]
784                                 close $fd
785
786                                 set enc [tcl_encoding $enc]
787                                 if {$enc ne {}} {
788                                         set msg [encoding convertfrom $enc $msg]
789                                         set author_name [encoding convertfrom $enc $author_name]
790                                         set committer_name [encoding convertfrom $enc $committer_name]
791                                         set header($cmit,author) $author_name
792                                         set header($cmit,committer) $committer_name
793                                         set header($cmit,summary) \
794                                         [encoding convertfrom $enc $header($cmit,summary)]
795                                 }
796                                 set msg [string trim $msg]
797                         }
798                         set header($cmit,message) $msg
799                 }
800
801                 $w_cviewer insert end "commit $cmit\n" header_key
802                 $w_cviewer insert end [strcat [mc "Author:"] "\t"] header_key
803                 $w_cviewer insert end "$author_name $author_email" header_val
804                 $w_cviewer insert end "  $author_time\n" header_val
805
806                 $w_cviewer insert end [strcat [mc "Committer:"] "\t"] header_key
807                 $w_cviewer insert end "$committer_name $committer_email" header_val
808                 $w_cviewer insert end "  $committer_time\n" header_val
809
810                 if {$file ne $path} {
811                         $w_cviewer insert end [strcat [mc "Original File:"] "\t"] header_key
812                         $w_cviewer insert end "[escape_path $file]\n" header_val
813                 }
814
815                 $w_cviewer insert end "\n$msg"
816         }
817         $w_cviewer conf -state disabled
818
819         set highlight_line $lno
820         set highlight_commit $cmit
821
822         if {[lsearch -exact $tooltip_commit $highlight_commit] != -1} {
823                 _hide_tooltip $this
824         }
825 }
826
827 method _copycommit {} {
828         set pos @$::cursorX,$::cursorY
829         set lno [lindex [split [$::cursorW index $pos] .] 0]
830         set dat [lindex $amov_data $lno]
831         if {$dat ne {}} {
832                 clipboard clear
833                 clipboard append \
834                         -format STRING \
835                         -type STRING \
836                         -- [lindex $dat 0]
837         }
838 }
839
840 method _show_tooltip {cur_w pos} {
841         if {$tooltip_wm ne {}} {
842                 _open_tooltip $this $cur_w
843         } elseif {$tooltip_timer eq {}} {
844                 set tooltip_timer [after 1000 [cb _open_tooltip $cur_w]]
845         }
846 }
847
848 method _open_tooltip {cur_w} {
849         set tooltip_timer {}
850         set pos_x [winfo pointerx $cur_w]
851         set pos_y [winfo pointery $cur_w]
852         if {[winfo containing $pos_x $pos_y] ne $cur_w} {
853                 _hide_tooltip $this
854                 return
855         }
856
857         if {$tooltip_wm ne "$cur_w.tooltip"} {
858                 _hide_tooltip $this
859
860                 set tooltip_wm [toplevel $cur_w.tooltip -borderwidth 1]
861                 wm overrideredirect $tooltip_wm 1
862                 wm transient $tooltip_wm [winfo toplevel $cur_w]
863                 set tooltip_t $tooltip_wm.label
864                 text $tooltip_t \
865                         -takefocus 0 \
866                         -highlightthickness 0 \
867                         -relief flat \
868                         -borderwidth 0 \
869                         -wrap none \
870                         -background lightyellow \
871                         -foreground black
872                 $tooltip_t tag conf section_header -font font_uibold
873                 pack $tooltip_t
874         } else {
875                 $tooltip_t conf -state normal
876                 $tooltip_t delete 0.0 end
877         }
878
879         set pos @[join [list \
880                 [expr {$pos_x - [winfo rootx $cur_w]}] \
881                 [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
882         set lno [lindex [split [$cur_w index $pos] .] 0]
883         if {$cur_w eq $w_amov} {
884                 set dat [lindex $amov_data $lno]
885                 set org {}
886         } else {
887                 set dat [lindex $asim_data $lno]
888                 set org [lindex $amov_data $lno]
889         }
890
891         if {$dat eq {}} {
892                 _hide_tooltip $this
893                 return
894         }
895
896         set cmit [lindex $dat 0]
897         set tooltip_commit [list $cmit]
898
899         set author_name {}
900         set summary     {}
901         set author_time {}
902         catch {set author_name $header($cmit,author)}
903         catch {set summary     $header($cmit,summary)}
904         catch {set author_time [format_date $header($cmit,author-time)]}
905
906         $tooltip_t insert end "commit $cmit\n"
907         $tooltip_t insert end "$author_name  $author_time\n"
908         $tooltip_t insert end "$summary"
909
910         if {$org ne {} && [lindex $org 0] ne $cmit} {
911                 set save [$tooltip_t get 0.0 end]
912                 $tooltip_t delete 0.0 end
913
914                 set cmit [lindex $org 0]
915                 set file [lindex $org 1]
916                 lappend tooltip_commit $cmit
917
918                 set author_name {}
919                 set summary     {}
920                 set author_time {}
921                 catch {set author_name $header($cmit,author)}
922                 catch {set summary     $header($cmit,summary)}
923                 catch {set author_time [format_date $header($cmit,author-time)]}
924
925                 $tooltip_t insert end [strcat [mc "Originally By:"] "\n"] section_header
926                 $tooltip_t insert end "commit $cmit\n"
927                 $tooltip_t insert end "$author_name  $author_time\n"
928                 $tooltip_t insert end "$summary\n"
929
930                 if {$file ne $path} {
931                         $tooltip_t insert end [strcat [mc "In File:"] " "] section_header
932                         $tooltip_t insert end "$file\n"
933                 }
934
935                 $tooltip_t insert end "\n"
936                 $tooltip_t insert end [strcat [mc "Copied Or Moved Here By:"] "\n"] section_header
937                 $tooltip_t insert end $save
938         }
939
940         $tooltip_t conf -state disabled
941         _position_tooltip $this
942 }
943
944 method _position_tooltip {} {
945         set max_h [lindex [split [$tooltip_t index end] .] 0]
946         set max_w 0
947         for {set i 1} {$i <= $max_h} {incr i} {
948                 set c [lindex [split [$tooltip_t index "$i.0 lineend"] .] 1]
949                 if {$c > $max_w} {set max_w $c}
950         }
951         $tooltip_t conf -width $max_w -height $max_h
952
953         set req_w [winfo reqwidth  $tooltip_t]
954         set req_h [winfo reqheight $tooltip_t]
955         set pos_x [expr {[winfo pointerx .] +  5}]
956         set pos_y [expr {[winfo pointery .] + 10}]
957
958         set g "${req_w}x${req_h}"
959         if {$pos_x >= 0} {append g +}
960         append g $pos_x
961         if {$pos_y >= 0} {append g +}
962         append g $pos_y
963
964         wm geometry $tooltip_wm $g
965         raise $tooltip_wm
966 }
967
968 method _hide_tooltip {} {
969         if {$tooltip_wm ne {}} {
970                 destroy $tooltip_wm
971                 set tooltip_wm {}
972                 set tooltip_commit {}
973         }
974         if {$tooltip_timer ne {}} {
975                 after cancel $tooltip_timer
976                 set tooltip_timer {}
977         }
978 }
979
980 method _resize {new_height} {
981         set diff [expr {$new_height - $old_height}]
982         if {$diff == 0} return
983
984         set my [expr {[winfo height $w.file_pane] - 25}]
985         set o [$w.file_pane sash coord 0]
986         set ox [lindex $o 0]
987         set oy [expr {[lindex $o 1] + $diff}]
988         if {$oy < 0}   {set oy 0}
989         if {$oy > $my} {set oy $my}
990         $w.file_pane sash place 0 $ox $oy
991
992         set old_height $new_height
993 }
994
995 }