Merge branch 'jk/merge-one-file-working-tree' into maint
[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 finder     ; # find mini-dialog frame
25 field status     ; # status mega-widget instance
26 field old_height ; # last known height of $w.file_pane
27
28
29 # Tk UI colors
30 #
31 variable active_color #c0edc5
32 variable group_colors {
33         #d6d6d6
34         #e1e1e1
35         #ececec
36 }
37
38 # Current blame data; cleared/reset on each load
39 #
40 field commit               ; # input commit to blame
41 field path                 ; # input filename to view in $commit
42
43 field current_fd        {} ; # background process running
44 field highlight_line    -1 ; # current line selected
45 field highlight_column  {} ; # current commit column selected
46 field highlight_commit  {} ; # sha1 of commit selected
47
48 field total_lines       0  ; # total length of file
49 field blame_lines       0  ; # number of lines computed
50 field amov_data            ; # list of {commit origfile origline}
51 field asim_data            ; # list of {commit origfile origline}
52
53 field r_commit             ; # commit currently being parsed
54 field r_orig_line          ; # original line number
55 field r_final_line         ; # final line number
56 field r_line_count         ; # lines in this region
57
58 field tooltip_wm        {} ; # Current tooltip toplevel, if open
59 field tooltip_t         {} ; # Text widget in $tooltip_wm
60 field tooltip_timer     {} ; # Current timer event for our tooltip
61 field tooltip_commit    {} ; # Commit(s) in tooltip
62
63 constructor new {i_commit i_path i_jump} {
64         global cursor_ptr M1B M1T have_tk85 use_ttk NS
65         variable active_color
66         variable group_colors
67
68         set commit $i_commit
69         set path   $i_path
70
71         make_toplevel top w
72         wm title $top [append "[appname] ([reponame]): " [mc "File Viewer"]]
73
74         set font_w [font measure font_diff "0"]
75
76         gold_frame $w.header
77         tlabel $w.header.commit_l \
78                 -text [mc "Commit:"] \
79                 -background gold \
80                 -foreground black \
81                 -anchor w \
82                 -justify left
83         set w_back $w.header.commit_b
84         tlabel $w_back \
85                 -image ::blame::img_back_arrow \
86                 -borderwidth 0 \
87                 -relief flat \
88                 -state disabled \
89                 -background gold \
90                 -foreground black \
91                 -activebackground gold
92         bind $w_back <Button-1> "
93                 if {\[$w_back cget -state\] eq {normal}} {
94                         [cb _history_menu]
95                 }
96                 "
97         tlabel $w.header.commit \
98                 -textvariable @commit \
99                 -background gold \
100                 -foreground black \
101                 -anchor w \
102                 -justify left
103         tlabel $w.header.path_l \
104                 -text [mc "File:"] \
105                 -background gold \
106                 -foreground black \
107                 -anchor w \
108                 -justify left
109         set w_path $w.header.path
110         tlabel $w_path \
111                 -background gold \
112                 -foreground black \
113                 -anchor w \
114                 -justify left
115         pack $w.header.commit_l -side left
116         pack $w_back -side left
117         pack $w.header.commit -side left
118         pack $w_path -fill x -side right
119         pack $w.header.path_l -side right
120
121         panedwindow $w.file_pane -orient vertical -borderwidth 0 -sashwidth 3
122         frame $w.file_pane.out -relief flat -borderwidth 1
123         frame $w.file_pane.cm -relief sunken -borderwidth 1
124         $w.file_pane add $w.file_pane.out \
125                 -sticky nsew \
126                 -minsize 100 \
127                 -height 100 \
128                 -width 100
129         $w.file_pane add $w.file_pane.cm \
130                 -sticky nsew \
131                 -minsize 25 \
132                 -height 25 \
133                 -width 100
134
135         set w_line $w.file_pane.out.linenumber_t
136         text $w_line \
137                 -takefocus 0 \
138                 -highlightthickness 0 \
139                 -padx 0 -pady 0 \
140                 -background white \
141                 -foreground black \
142                 -borderwidth 0 \
143                 -state disabled \
144                 -wrap none \
145                 -height 40 \
146                 -width 6 \
147                 -font font_diff
148         $w_line tag conf linenumber -justify right -rmargin 5
149
150         set w_amov $w.file_pane.out.amove_t
151         text $w_amov \
152                 -takefocus 0 \
153                 -highlightthickness 0 \
154                 -padx 0 -pady 0 \
155                 -background white \
156                 -foreground black \
157                 -borderwidth 0 \
158                 -state disabled \
159                 -wrap none \
160                 -height 40 \
161                 -width 5 \
162                 -font font_diff
163         $w_amov tag conf author_abbr -justify right -rmargin 5
164         $w_amov tag conf curr_commit
165         $w_amov tag conf prior_commit -foreground blue -underline 1
166         $w_amov tag bind prior_commit \
167                 <Button-1> \
168                 "[cb _load_commit $w_amov @amov_data @%x,%y];break"
169
170         set w_asim $w.file_pane.out.asimple_t
171         text $w_asim \
172                 -takefocus 0 \
173                 -highlightthickness 0 \
174                 -padx 0 -pady 0 \
175                 -background white \
176                 -foreground black \
177                 -borderwidth 0 \
178                 -state disabled \
179                 -wrap none \
180                 -height 40 \
181                 -width 4 \
182                 -font font_diff
183         $w_asim tag conf author_abbr -justify right
184         $w_asim tag conf curr_commit
185         $w_asim tag conf prior_commit -foreground blue -underline 1
186         $w_asim tag bind prior_commit \
187                 <Button-1> \
188                 "[cb _load_commit $w_asim @asim_data @%x,%y];break"
189
190         set w_file $w.file_pane.out.file_t
191         text $w_file \
192                 -takefocus 0 \
193                 -highlightthickness 0 \
194                 -padx 0 -pady 0 \
195                 -background white \
196                 -foreground black \
197                 -borderwidth 0 \
198                 -state disabled \
199                 -wrap none \
200                 -height 40 \
201                 -width 80 \
202                 -xscrollcommand [list $w.file_pane.out.sbx set] \
203                 -font font_diff
204         if {$have_tk85} {
205                 $w_file configure -inactiveselectbackground darkblue
206         }
207         $w_file tag conf found \
208                 -background yellow
209
210         set w_columns [list $w_amov $w_asim $w_line $w_file]
211
212         ${NS}::scrollbar $w.file_pane.out.sbx \
213                 -orient h \
214                 -command [list $w_file xview]
215         ${NS}::scrollbar $w.file_pane.out.sby \
216                 -orient v \
217                 -command [list scrollbar2many $w_columns yview]
218         eval grid $w_columns $w.file_pane.out.sby -sticky nsew
219         grid conf \
220                 $w.file_pane.out.sbx \
221                 -column [expr {[llength $w_columns] - 1}] \
222                 -sticky we
223         grid columnconfigure \
224                 $w.file_pane.out \
225                 [expr {[llength $w_columns] - 1}] \
226                 -weight 1
227         grid rowconfigure $w.file_pane.out 0 -weight 1
228
229         set finder [::searchbar::new \
230                 $w.file_pane.out.ff $w_file \
231                 -column [expr {[llength $w_columns] - 1}] \
232                 ]
233
234         set w_cviewer $w.file_pane.cm.t
235         text $w_cviewer \
236                 -background white \
237                 -foreground black \
238                 -borderwidth 0 \
239                 -state disabled \
240                 -wrap none \
241                 -height 10 \
242                 -width 80 \
243                 -xscrollcommand [list $w.file_pane.cm.sbx set] \
244                 -yscrollcommand [list $w.file_pane.cm.sby set] \
245                 -font font_diff
246         $w_cviewer tag conf still_loading \
247                 -font font_uiitalic \
248                 -justify center
249         $w_cviewer tag conf header_key \
250                 -tabs {3c} \
251                 -background $active_color \
252                 -font font_uibold
253         $w_cviewer tag conf header_val \
254                 -background $active_color \
255                 -font font_ui
256         $w_cviewer tag raise sel
257         ${NS}::scrollbar $w.file_pane.cm.sbx \
258                 -orient h \
259                 -command [list $w_cviewer xview]
260         ${NS}::scrollbar $w.file_pane.cm.sby \
261                 -orient v \
262                 -command [list $w_cviewer yview]
263         pack $w.file_pane.cm.sby -side right -fill y
264         pack $w.file_pane.cm.sbx -side bottom -fill x
265         pack $w_cviewer -expand 1 -fill both
266
267         set status [::status_bar::new $w.status]
268
269         menu $w.ctxm -tearoff 0
270         $w.ctxm add command \
271                 -label [mc "Copy Commit"] \
272                 -command [cb _copycommit]
273         $w.ctxm add separator
274         $w.ctxm add command \
275                 -label [mc "Find Text..."] \
276                 -accelerator F7 \
277                 -command [list searchbar::show $finder]
278         menu $w.ctxm.enc
279         build_encoding_menu $w.ctxm.enc [cb _setencoding]
280         $w.ctxm add cascade \
281                 -label [mc "Encoding"] \
282                 -menu $w.ctxm.enc
283         $w.ctxm add command \
284                 -label [mc "Do Full Copy Detection"] \
285                 -command [cb _fullcopyblame]
286         $w.ctxm add separator
287         $w.ctxm add command \
288                 -label [mc "Show History Context"] \
289                 -command [cb _gitkcommit]
290         $w.ctxm add command \
291                 -label [mc "Blame Parent Commit"] \
292                 -command [cb _blameparent]
293
294         foreach i $w_columns {
295                 for {set g 0} {$g < [llength $group_colors]} {incr g} {
296                         $i tag conf color$g -background [lindex $group_colors $g]
297                 }
298
299                 if {$i eq $w_file} {
300                         $w_file tag raise found
301                 }
302                 $i tag raise sel
303
304                 $i conf -cursor $cursor_ptr
305                 $i conf -yscrollcommand \
306                         "[list ::searchbar::scrolled $finder]
307                          [list many2scrollbar $w_columns yview $w.file_pane.out.sby]"
308                 bind $i <Button-1> "
309                         [cb _hide_tooltip]
310                         [cb _click $i @%x,%y]
311                         focus $i
312                 "
313                 bind $i <Any-Motion>  [cb _show_tooltip $i @%x,%y]
314                 bind $i <Any-Enter>   [cb _hide_tooltip]
315                 bind $i <Any-Leave>   [cb _hide_tooltip]
316                 bind_button3 $i "
317                         [cb _hide_tooltip]
318                         set cursorX %x
319                         set cursorY %y
320                         set cursorW %W
321                         tk_popup $w.ctxm %X %Y
322                 "
323                 bind $i <Shift-Tab> "[list focus $w_cviewer];break"
324                 bind $i <Tab>       "[cb _focus_search $w_cviewer];break"
325         }
326
327         foreach i [concat $w_columns $w_cviewer] {
328                 bind $i <Key-Up>        {catch {%W yview scroll -1 units};break}
329                 bind $i <Key-Down>      {catch {%W yview scroll  1 units};break}
330                 bind $i <Key-Left>      {catch {%W xview scroll -1 units};break}
331                 bind $i <Key-Right>     {catch {%W xview scroll  1 units};break}
332                 bind $i <Key-k>         {catch {%W yview scroll -1 units};break}
333                 bind $i <Key-j>         {catch {%W yview scroll  1 units};break}
334                 bind $i <Key-h>         {catch {%W xview scroll -1 units};break}
335                 bind $i <Key-l>         {catch {%W xview scroll  1 units};break}
336                 bind $i <Control-Key-b> {catch {%W yview scroll -1 pages};break}
337                 bind $i <Control-Key-f> {catch {%W yview scroll  1 pages};break}
338         }
339
340         bind $w_cviewer <Shift-Tab> "[cb _focus_search $w_file];break"
341         bind $w_cviewer <Tab>       "[list focus $w_file];break"
342         bind $w_cviewer <Button-1>   [list focus $w_cviewer]
343         bind $w_file    <Visibility> [cb _focus_search $w_file]
344         bind $top       <F7>         [list searchbar::show $finder]
345         bind $top       <Escape>     [list searchbar::hide $finder]
346         bind $top       <F3>         [list searchbar::find_next $finder]
347         bind $top       <Shift-F3>   [list searchbar::find_prev $finder]
348         catch { bind $top <Shift-Key-XF86_Switch_VT_3> [list searchbar::find_prev $finder] }
349
350         grid configure $w.header -sticky ew
351         grid configure $w.file_pane -sticky nsew
352         grid configure $w.status -sticky ew
353         grid columnconfigure $top 0 -weight 1
354         grid rowconfigure $top 0 -weight 0
355         grid rowconfigure $top 1 -weight 1
356         grid rowconfigure $top 2 -weight 0
357
358         set req_w [winfo reqwidth  $top]
359         set req_h [winfo reqheight $top]
360         set scr_w [expr {[winfo screenwidth $top] - 40}]
361         set scr_h [expr {[winfo screenheight $top] - 120}]
362         set opt_w [expr {$font_w * (80 + 5*3 + 3)}]
363         if {$req_w < $opt_w} {set req_w $opt_w}
364         if {$req_w > $scr_w} {set req_w $scr_w}
365         set opt_h [expr {$req_w*4/3}]
366         if {$req_h < $scr_h} {set req_h $scr_h}
367         if {$req_h > $opt_h} {set req_h $opt_h}
368         set g "${req_w}x${req_h}"
369         wm geometry $top $g
370         update
371
372         set old_height [winfo height $w.file_pane]
373         $w.file_pane sash place 0 \
374                 [lindex [$w.file_pane sash coord 0] 0] \
375                 [expr {int($old_height * 0.80)}]
376         bind $w.file_pane <Configure> \
377         "if {{$w.file_pane} eq {%W}} {[cb _resize %h]}"
378
379         wm protocol $top WM_DELETE_WINDOW "destroy $top"
380         bind $top <Destroy> [cb _handle_destroy %W]
381
382         _load $this $i_jump
383 }
384
385 method _focus_search {win} {
386         if {[searchbar::visible $finder]} {
387                 focus [searchbar::editor $finder]
388         } else {
389                 focus $win
390         }
391 }
392
393 method _handle_destroy {win} {
394         if {$win eq $w} {
395                 _kill $this
396                 delete_this
397         }
398 }
399
400 method _kill {} {
401         if {$current_fd ne {}} {
402                 kill_file_process $current_fd
403                 catch {close $current_fd}
404                 set current_fd {}
405         }
406 }
407
408 method _load {jump} {
409         variable group_colors
410
411         _hide_tooltip $this
412
413         if {$total_lines != 0 || $current_fd ne {}} {
414                 _kill $this
415
416                 foreach i $w_columns {
417                         $i conf -state normal
418                         $i delete 0.0 end
419                         foreach g [$i tag names] {
420                                 if {[regexp {^g[0-9a-f]{40}$} $g]} {
421                                         $i tag delete $g
422                                 }
423                         }
424                         $i conf -state disabled
425                 }
426
427                 $w_cviewer conf -state normal
428                 $w_cviewer delete 0.0 end
429                 $w_cviewer conf -state disabled
430
431                 set highlight_line -1
432                 set highlight_column {}
433                 set highlight_commit {}
434                 set total_lines 0
435         }
436
437         if {$history eq {}} {
438                 $w_back conf -state disabled
439         } else {
440                 $w_back conf -state normal
441         }
442
443         # Index 0 is always empty.  There is never line 0 as
444         # we use only 1 based lines, as that matches both with
445         # git-blame output and with Tk's text widget.
446         #
447         set amov_data [list [list]]
448         set asim_data [list [list]]
449
450         $status show [mc "Reading %s..." "$commit:[escape_path $path]"]
451         $w_path conf -text [escape_path $path]
452
453         set do_textconv 0
454         if {![is_config_false gui.textconv] && [git-version >= 1.7.2]} {
455                 set filter [gitattr $path diff set]
456                 set textconv [get_config [join [list diff $filter textconv] .]]
457                 if {$filter ne {set} && $textconv ne {}} {
458                         set do_textconv 1
459                 }
460         }
461         if {$commit eq {}} {
462                 if {$do_textconv ne 0} {
463                         # Run textconv with sh -c "..." to allow it to
464                         # contain command + arguments. On windows, just
465                         # call the filter command.
466                         if {![file executable [shellpath]]} {
467                                 set fd [open |[linsert $textconv end $path] r]
468                         } else {
469                                 set fd [open |[list [shellpath] -c "$textconv \"\$0\"" $path] r]
470                         }
471                 } else {
472                         set fd [open $path r]
473                 }
474                 fconfigure $fd -eofchar {}
475         } else {
476                 if {$do_textconv ne 0} {
477                         set fd [git_read cat-file --textconv "$commit:$path"]
478                 } else {
479                         set fd [git_read cat-file blob "$commit:$path"]
480                 }
481         }
482         fconfigure $fd \
483                 -blocking 0 \
484                 -translation lf \
485                 -encoding [get_path_encoding $path]
486         fileevent $fd readable [cb _read_file $fd $jump]
487         set current_fd $fd
488 }
489
490 method _history_menu {} {
491         set m $w.backmenu
492         if {[winfo exists $m]} {
493                 $m delete 0 end
494         } else {
495                 menu $m -tearoff 0
496         }
497
498         for {set i [expr {[llength $history] - 1}]
499                 } {$i >= 0} {incr i -1} {
500                 set e [lindex $history $i]
501                 set c [lindex $e 0]
502                 set f [lindex $e 1]
503
504                 if {[regexp {^[0-9a-f]{40}$} $c]} {
505                         set t [string range $c 0 8]...
506                 } elseif {$c eq {}} {
507                         set t {Working Directory}
508                 } else {
509                         set t $c
510                 }
511                 if {![catch {set summary $header($c,summary)}]} {
512                         append t " $summary"
513                         if {[string length $t] > 70} {
514                                 set t [string range $t 0 66]...
515                         }
516                 }
517
518                 $m add command -label $t -command [cb _goback $i]
519         }
520         set X [winfo rootx $w_back]
521         set Y [expr {[winfo rooty $w_back] + [winfo height $w_back]}]
522         tk_popup $m $X $Y
523 }
524
525 method _goback {i} {
526         set dat [lindex $history $i]
527         set history [lrange $history 0 [expr {$i - 1}]]
528         set commit [lindex $dat 0]
529         set path [lindex $dat 1]
530         _load $this [lrange $dat 2 5]
531 }
532
533 method _read_file {fd jump} {
534         if {$fd ne $current_fd} {
535                 catch {close $fd}
536                 return
537         }
538
539         foreach i $w_columns {$i conf -state normal}
540         while {[gets $fd line] >= 0} {
541                 regsub "\r\$" $line {} line
542                 incr total_lines
543                 lappend amov_data {}
544                 lappend asim_data {}
545
546                 if {$total_lines > 1} {
547                         foreach i $w_columns {$i insert end "\n"}
548                 }
549
550                 $w_line insert end "$total_lines" linenumber
551                 $w_file insert end "$line"
552         }
553
554         set ln_wc [expr {[string length $total_lines] + 2}]
555         if {[$w_line cget -width] < $ln_wc} {
556                 $w_line conf -width $ln_wc
557         }
558
559         foreach i $w_columns {$i conf -state disabled}
560
561         if {[eof $fd]} {
562                 close $fd
563
564                 # If we don't force Tk to update the widgets *right now*
565                 # none of our jump commands will cause a change in the UI.
566                 #
567                 update
568
569                 if {[llength $jump] == 1} {
570                         set highlight_line [lindex $jump 0]
571                         $w_file see "$highlight_line.0"
572                 } elseif {[llength $jump] == 4} {
573                         set highlight_column [lindex $jump 0]
574                         set highlight_line [lindex $jump 1]
575                         $w_file xview moveto [lindex $jump 2]
576                         $w_file yview moveto [lindex $jump 3]
577                 }
578
579                 _exec_blame $this $w_asim @asim_data \
580                         [list] \
581                         [mc "Loading copy/move tracking annotations..."]
582         }
583 } ifdeleted { catch {close $fd} }
584
585 method _exec_blame {cur_w cur_d options cur_s} {
586         lappend options --incremental --encoding=utf-8
587         if {$commit eq {}} {
588                 lappend options --contents $path
589         } else {
590                 lappend options $commit
591         }
592         lappend options -- $path
593         set fd [eval git_read --nice blame $options]
594         fconfigure $fd -blocking 0 -translation lf -encoding utf-8
595         fileevent $fd readable [cb _read_blame $fd $cur_w $cur_d]
596         set current_fd $fd
597         set blame_lines 0
598
599         $status start \
600                 $cur_s \
601                 [mc "lines annotated"]
602 }
603
604 method _read_blame {fd cur_w cur_d} {
605         upvar #0 $cur_d line_data
606         variable group_colors
607
608         if {$fd ne $current_fd} {
609                 catch {close $fd}
610                 return
611         }
612
613         $cur_w conf -state normal
614         while {[gets $fd line] >= 0} {
615                 if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
616                         cmit original_line final_line line_count]} {
617                         set r_commit     $cmit
618                         set r_orig_line  $original_line
619                         set r_final_line $final_line
620                         set r_line_count $line_count
621                 } elseif {[string match {filename *} $line]} {
622                         set file [string range $line 9 end]
623                         set n    $r_line_count
624                         set lno  $r_final_line
625                         set oln  $r_orig_line
626                         set cmit $r_commit
627
628                         if {[regexp {^0{40}$} $cmit]} {
629                                 set commit_abbr work
630                                 set commit_type curr_commit
631                         } elseif {$cmit eq $commit} {
632                                 set commit_abbr this
633                                 set commit_type curr_commit
634                         } else {
635                                 set commit_type prior_commit
636                                 set commit_abbr [string range $cmit 0 3]
637                         }
638
639                         set author_abbr {}
640                         set a_name {}
641                         catch {set a_name $header($cmit,author)}
642                         while {$a_name ne {}} {
643                                 if {$author_abbr ne {}
644                                         && [string index $a_name 0] eq {'}} {
645                                         regsub {^'[^']+'\s+} $a_name {} a_name
646                                 }
647                                 if {![regexp {^([[:upper:]])} $a_name _a]} break
648                                 append author_abbr $_a
649                                 unset _a
650                                 if {![regsub \
651                                         {^[[:upper:]][^\s]*\s+} \
652                                         $a_name {} a_name ]} break
653                         }
654                         if {$author_abbr eq {}} {
655                                 set author_abbr { |}
656                         } else {
657                                 set author_abbr [string range $author_abbr 0 3]
658                         }
659                         unset a_name
660
661                         set first_lno $lno
662                         while {
663                            $first_lno > 1
664                         && $cmit eq [lindex $line_data [expr {$first_lno - 1}] 0]
665                         && $file eq [lindex $line_data [expr {$first_lno - 1}] 1]
666                         } {
667                                 incr first_lno -1
668                         }
669
670                         set color {}
671                         if {$first_lno < $lno} {
672                                 foreach g [$w_file tag names $first_lno.0] {
673                                         if {[regexp {^color[0-9]+$} $g]} {
674                                                 set color $g
675                                                 break
676                                         }
677                                 }
678                         } else {
679                                 set i [lsort [concat \
680                                         [$w_file tag names "[expr {$first_lno - 1}].0"] \
681                                         [$w_file tag names "[expr {$lno + $n}].0"] \
682                                         ]]
683                                 for {set g 0} {$g < [llength $group_colors]} {incr g} {
684                                         if {[lsearch -sorted -exact $i color$g] == -1} {
685                                                 set color color$g
686                                                 break
687                                         }
688                                 }
689                         }
690                         if {$color eq {}} {
691                                 set color color0
692                         }
693
694                         while {$n > 0} {
695                                 set lno_e "$lno.0 lineend + 1c"
696                                 if {[lindex $line_data $lno] ne {}} {
697                                         set g [lindex $line_data $lno 0]
698                                         foreach i $w_columns {
699                                                 $i tag remove g$g $lno.0 $lno_e
700                                         }
701                                 }
702                                 lset line_data $lno [list $cmit $file $oln]
703
704                                 $cur_w delete $lno.0 "$lno.0 lineend"
705                                 if {$lno == $first_lno} {
706                                         $cur_w insert $lno.0 $commit_abbr $commit_type
707                                 } elseif {$lno == [expr {$first_lno + 1}]} {
708                                         $cur_w insert $lno.0 $author_abbr author_abbr
709                                 } else {
710                                         $cur_w insert $lno.0 { |}
711                                 }
712
713                                 foreach i $w_columns {
714                                         if {$cur_w eq $w_amov} {
715                                                 for {set g 0} \
716                                                         {$g < [llength $group_colors]} \
717                                                         {incr g} {
718                                                         $i tag remove color$g $lno.0 $lno_e
719                                                 }
720                                                 $i tag add $color $lno.0 $lno_e
721                                         }
722                                         $i tag add g$cmit $lno.0 $lno_e
723                                 }
724
725                                 if {$highlight_column eq $cur_w} {
726                                         if {$highlight_line == -1
727                                          && [lindex [$w_file yview] 0] == 0} {
728                                                 $w_file see $lno.0
729                                                 set highlight_line $lno
730                                         }
731                                         if {$highlight_line == $lno} {
732                                                 _showcommit $this $cur_w $lno
733                                         }
734                                 }
735
736                                 incr n -1
737                                 incr lno
738                                 incr oln
739                                 incr blame_lines
740                         }
741
742                         while {
743                            $cmit eq [lindex $line_data $lno 0]
744                         && $file eq [lindex $line_data $lno 1]
745                         } {
746                                 $cur_w delete $lno.0 "$lno.0 lineend"
747
748                                 if {$lno == $first_lno} {
749                                         $cur_w insert $lno.0 $commit_abbr $commit_type
750                                 } elseif {$lno == [expr {$first_lno + 1}]} {
751                                         $cur_w insert $lno.0 $author_abbr author_abbr
752                                 } else {
753                                         $cur_w insert $lno.0 { |}
754                                 }
755
756                                 if {$cur_w eq $w_amov} {
757                                         foreach i $w_columns {
758                                                 for {set g 0} \
759                                                         {$g < [llength $group_colors]} \
760                                                         {incr g} {
761                                                         $i tag remove color$g $lno.0 $lno_e
762                                                 }
763                                                 $i tag add $color $lno.0 $lno_e
764                                         }
765                                 }
766
767                                 incr lno
768                         }
769
770                 } elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
771                         set header($r_commit,$key) $data
772                 }
773         }
774         $cur_w conf -state disabled
775
776         if {[eof $fd]} {
777                 close $fd
778                 if {$cur_w eq $w_asim} {
779                         # Switches for original location detection
780                         set threshold [get_config gui.copyblamethreshold]
781                         set original_options [list "-C$threshold"]
782
783                         if {![is_config_true gui.fastcopyblame]} {
784                                 # thorough copy search; insert before the threshold
785                                 set original_options [linsert $original_options 0 -C]
786                         }
787                         if {[git-version >= 1.5.3]} {
788                                 lappend original_options -w ; # ignore indentation changes
789                         }
790
791                         _exec_blame $this $w_amov @amov_data \
792                                 $original_options \
793                                 [mc "Loading original location annotations..."]
794                 } else {
795                         set current_fd {}
796                         $status stop [mc "Annotation complete."]
797                 }
798         } else {
799                 $status update $blame_lines $total_lines
800         }
801 } ifdeleted { catch {close $fd} }
802
803 method _find_commit_bound {data_list start_idx delta} {
804         upvar #0 $data_list line_data
805         set pos $start_idx
806         set limit       [expr {[llength $line_data] - 1}]
807         set base_commit [lindex $line_data $pos 0]
808
809         while {$pos > 0 && $pos < $limit} {
810                 set new_pos [expr {$pos + $delta}]
811                 if {[lindex $line_data $new_pos 0] ne $base_commit} {
812                         return $pos
813                 }
814
815                 set pos $new_pos
816         }
817
818         return $pos
819 }
820
821 method _fullcopyblame {} {
822         if {$current_fd ne {}} {
823                 tk_messageBox \
824                         -icon error \
825                         -type ok \
826                         -title [mc "Busy"] \
827                         -message [mc "Annotation process is already running."]
828
829                 return
830         }
831
832         # Switches for original location detection
833         set threshold [get_config gui.copyblamethreshold]
834         set original_options [list -C -C "-C$threshold"]
835
836         if {[git-version >= 1.5.3]} {
837                 lappend original_options -w ; # ignore indentation changes
838         }
839
840         # Find the line range
841         set pos @$::cursorX,$::cursorY
842         set lno [lindex [split [$::cursorW index $pos] .] 0]
843         set min_amov_lno [_find_commit_bound $this @amov_data $lno -1]
844         set max_amov_lno [_find_commit_bound $this @amov_data $lno 1]
845         set min_asim_lno [_find_commit_bound $this @asim_data $lno -1]
846         set max_asim_lno [_find_commit_bound $this @asim_data $lno 1]
847
848         if {$min_asim_lno < $min_amov_lno} {
849                 set min_amov_lno $min_asim_lno
850         }
851
852         if {$max_asim_lno > $max_amov_lno} {
853                 set max_amov_lno $max_asim_lno
854         }
855
856         lappend original_options -L "$min_amov_lno,$max_amov_lno"
857
858         # Clear lines
859         for {set i $min_amov_lno} {$i <= $max_amov_lno} {incr i} {
860                 lset amov_data $i [list ]
861         }
862
863         # Start the back-end process
864         _exec_blame $this $w_amov @amov_data \
865                 $original_options \
866                 [mc "Running thorough copy detection..."]
867 }
868
869 method _click {cur_w pos} {
870         set lno [lindex [split [$cur_w index $pos] .] 0]
871         _showcommit $this $cur_w $lno
872 }
873
874 method _setencoding {enc} {
875         force_path_encoding $path $enc
876         _load $this [list \
877                 $highlight_column \
878                 $highlight_line \
879                 [lindex [$w_file xview] 0] \
880                 [lindex [$w_file yview] 0] \
881                 ]
882 }
883
884 method _load_commit {cur_w cur_d pos} {
885         upvar #0 $cur_d line_data
886         set lno [lindex [split [$cur_w index $pos] .] 0]
887         set dat [lindex $line_data $lno]
888         if {$dat ne {}} {
889                 _load_new_commit $this  \
890                         [lindex $dat 0] \
891                         [lindex $dat 1] \
892                         [list [lindex $dat 2]]
893         }
894 }
895
896 method _load_new_commit {new_commit new_path jump} {
897         lappend history [list \
898                 $commit $path \
899                 $highlight_column \
900                 $highlight_line \
901                 [lindex [$w_file xview] 0] \
902                 [lindex [$w_file yview] 0] \
903                 ]
904
905         set commit $new_commit
906         set path   $new_path
907         _load $this $jump
908 }
909
910 method _showcommit {cur_w lno} {
911         global repo_config
912         variable active_color
913
914         if {$highlight_commit ne {}} {
915                 foreach i $w_columns {
916                         $i tag conf g$highlight_commit -background {}
917                         $i tag lower g$highlight_commit
918                 }
919         }
920
921         if {$cur_w eq $w_asim} {
922                 set dat [lindex $asim_data $lno]
923                 set highlight_column $w_asim
924         } else {
925                 set dat [lindex $amov_data $lno]
926                 set highlight_column $w_amov
927         }
928
929         $w_cviewer conf -state normal
930         $w_cviewer delete 0.0 end
931
932         if {$dat eq {}} {
933                 set cmit {}
934                 $w_cviewer insert end [mc "Loading annotation..."] still_loading
935         } else {
936                 set cmit [lindex $dat 0]
937                 set file [lindex $dat 1]
938
939                 foreach i $w_columns {
940                         $i tag conf g$cmit -background $active_color
941                         $i tag raise g$cmit
942                         if {$i eq $w_file} {
943                                 $w_file tag raise found
944                         }
945                         $i tag raise sel
946                 }
947
948                 set author_name {}
949                 set author_email {}
950                 set author_time {}
951                 catch {set author_name $header($cmit,author)}
952                 catch {set author_email $header($cmit,author-mail)}
953                 catch {set author_time [format_date $header($cmit,author-time)]}
954
955                 set committer_name {}
956                 set committer_email {}
957                 set committer_time {}
958                 catch {set committer_name $header($cmit,committer)}
959                 catch {set committer_email $header($cmit,committer-mail)}
960                 catch {set committer_time [format_date $header($cmit,committer-time)]}
961
962                 if {[catch {set msg $header($cmit,message)}]} {
963                         set msg {}
964                         catch {
965                                 set fd [git_read cat-file commit $cmit]
966                                 fconfigure $fd -encoding binary -translation lf
967                                 # By default commits are assumed to be in utf-8
968                                 set enc utf-8
969                                 while {[gets $fd line] > 0} {
970                                         if {[string match {encoding *} $line]} {
971                                                 set enc [string tolower [string range $line 9 end]]
972                                         }
973                                 }
974                                 set msg [read $fd]
975                                 close $fd
976
977                                 set enc [tcl_encoding $enc]
978                                 if {$enc ne {}} {
979                                         set msg [encoding convertfrom $enc $msg]
980                                 }
981                                 set msg [string trim $msg]
982                         }
983                         set header($cmit,message) $msg
984                 }
985
986                 $w_cviewer insert end "commit $cmit\n" header_key
987                 $w_cviewer insert end [strcat [mc "Author:"] "\t"] header_key
988                 $w_cviewer insert end "$author_name $author_email" header_val
989                 $w_cviewer insert end "  $author_time\n" header_val
990
991                 $w_cviewer insert end [strcat [mc "Committer:"] "\t"] header_key
992                 $w_cviewer insert end "$committer_name $committer_email" header_val
993                 $w_cviewer insert end "  $committer_time\n" header_val
994
995                 if {$file ne $path} {
996                         $w_cviewer insert end [strcat [mc "Original File:"] "\t"] header_key
997                         $w_cviewer insert end "[escape_path $file]\n" header_val
998                 }
999
1000                 $w_cviewer insert end "\n$msg"
1001         }
1002         $w_cviewer conf -state disabled
1003
1004         set highlight_line $lno
1005         set highlight_commit $cmit
1006
1007         if {[lsearch -exact $tooltip_commit $highlight_commit] != -1} {
1008                 _hide_tooltip $this
1009         }
1010 }
1011
1012 method _get_click_amov_info {} {
1013         set pos @$::cursorX,$::cursorY
1014         set lno [lindex [split [$::cursorW index $pos] .] 0]
1015         return [lindex $amov_data $lno]
1016 }
1017
1018 method _copycommit {} {
1019         set dat [_get_click_amov_info $this]
1020         if {$dat ne {}} {
1021                 clipboard clear
1022                 clipboard append \
1023                         -format STRING \
1024                         -type STRING \
1025                         -- [lindex $dat 0]
1026         }
1027 }
1028
1029 method _format_offset_date {base offset} {
1030         set exval [expr {$base + $offset*24*60*60}]
1031         return [clock format $exval -format {%Y-%m-%d}]
1032 }
1033
1034 method _gitkcommit {} {
1035         global nullid
1036
1037         set dat [_get_click_amov_info $this]
1038         if {$dat ne {}} {
1039                 set cmit [lindex $dat 0]
1040
1041                 # If the line belongs to the working copy, use HEAD instead
1042                 if {$cmit eq $nullid} {
1043                         if {[catch {set cmit [git rev-parse --verify HEAD]} err]} {
1044                                 error_popup [strcat [mc "Cannot find HEAD commit:"] "\n\n$err"]
1045                                 return;
1046                         }
1047                 }
1048
1049                 set radius [get_config gui.blamehistoryctx]
1050                 set cmdline [list --select-commit=$cmit]
1051
1052                 if {$radius > 0} {
1053                         set author_time {}
1054                         set committer_time {}
1055
1056                         catch {set author_time $header($cmit,author-time)}
1057                         catch {set committer_time $header($cmit,committer-time)}
1058
1059                         if {$committer_time eq {}} {
1060                                 set committer_time $author_time
1061                         }
1062
1063                         set after_time [_format_offset_date $this $committer_time [expr {-$radius}]]
1064                         set before_time [_format_offset_date $this $committer_time $radius]
1065
1066                         lappend cmdline --after=$after_time --before=$before_time
1067                 }
1068
1069                 lappend cmdline $cmit
1070
1071                 set base_rev "HEAD"
1072                 if {$commit ne {}} {
1073                         set base_rev $commit
1074                 }
1075
1076                 if {$base_rev ne $cmit} {
1077                         lappend cmdline $base_rev
1078                 }
1079
1080                 do_gitk $cmdline
1081         }
1082 }
1083
1084 method _blameparent {} {
1085         global nullid
1086
1087         set dat [_get_click_amov_info $this]
1088         if {$dat ne {}} {
1089                 set cmit [lindex $dat 0]
1090                 set new_path [lindex $dat 1]
1091
1092                 # Allow using Blame Parent on lines modified in the working copy
1093                 if {$cmit eq $nullid} {
1094                         set parent_ref "HEAD"
1095                 } else {
1096                         set parent_ref "$cmit^"
1097                 }
1098                 if {[catch {set cparent [git rev-parse --verify $parent_ref]} err]} {
1099                         error_popup [strcat [mc "Cannot find parent commit:"] "\n\n$err"]
1100                         return;
1101                 }
1102
1103                 _kill $this
1104
1105                 # Generate a diff between the commit and its parent,
1106                 # and use the hunks to update the line number.
1107                 # Request zero context to simplify calculations.
1108                 if {$cmit eq $nullid} {
1109                         set diffcmd [list diff-index --unified=0 $cparent -- $new_path]
1110                 } else {
1111                         set diffcmd [list diff-tree --unified=0 $cparent $cmit -- $new_path]
1112                 }
1113                 if {[catch {set fd [eval git_read $diffcmd]} err]} {
1114                         $status stop [mc "Unable to display parent"]
1115                         error_popup [strcat [mc "Error loading diff:"] "\n\n$err"]
1116                         return
1117                 }
1118
1119                 set r_orig_line [lindex $dat 2]
1120
1121                 fconfigure $fd \
1122                         -blocking 0 \
1123                         -encoding binary \
1124                         -translation binary
1125                 fileevent $fd readable [cb _read_diff_load_commit \
1126                         $fd $cparent $new_path $r_orig_line]
1127                 set current_fd $fd
1128         }
1129 }
1130
1131 method _read_diff_load_commit {fd cparent new_path tline} {
1132         if {$fd ne $current_fd} {
1133                 catch {close $fd}
1134                 return
1135         }
1136
1137         while {[gets $fd line] >= 0} {
1138                 if {[regexp {^@@ -(\d+)(,(\d+))? \+(\d+)(,(\d+))? @@} $line line \
1139                         old_line osz old_size new_line nsz new_size]} {
1140
1141                         if {$osz eq {}} { set old_size 1 }
1142                         if {$nsz eq {}} { set new_size 1 }
1143
1144                         if {$new_line <= $tline} {
1145                                 if {[expr {$new_line + $new_size}] > $tline} {
1146                                         # Target line within the hunk
1147                                         set line_shift [expr {
1148                                                 ($new_size-$old_size)*($tline-$new_line)/$new_size
1149                                                 }]
1150                                 } else {
1151                                         set line_shift [expr {$new_size-$old_size}]
1152                                 }
1153
1154                                 set r_orig_line [expr {$r_orig_line - $line_shift}]
1155                         }
1156                 }
1157         }
1158
1159         if {[eof $fd]} {
1160                 close $fd;
1161                 set current_fd {}
1162
1163                 _load_new_commit $this  \
1164                         $cparent        \
1165                         $new_path       \
1166                         [list $r_orig_line]
1167         }
1168 } ifdeleted { catch {close $fd} }
1169
1170 method _show_tooltip {cur_w pos} {
1171         if {$tooltip_wm ne {}} {
1172                 _open_tooltip $this $cur_w
1173         } elseif {$tooltip_timer eq {}} {
1174                 set tooltip_timer [after 1000 [cb _open_tooltip $cur_w]]
1175         }
1176 }
1177
1178 method _open_tooltip {cur_w} {
1179         set tooltip_timer {}
1180         set pos_x [winfo pointerx $cur_w]
1181         set pos_y [winfo pointery $cur_w]
1182         if {[winfo containing $pos_x $pos_y] ne $cur_w} {
1183                 _hide_tooltip $this
1184                 return
1185         }
1186
1187         if {$tooltip_wm ne "$cur_w.tooltip"} {
1188                 _hide_tooltip $this
1189
1190                 set tooltip_wm [toplevel $cur_w.tooltip -borderwidth 1]
1191                 wm overrideredirect $tooltip_wm 1
1192                 wm transient $tooltip_wm [winfo toplevel $cur_w]
1193                 set tooltip_t $tooltip_wm.label
1194                 text $tooltip_t \
1195                         -takefocus 0 \
1196                         -highlightthickness 0 \
1197                         -relief flat \
1198                         -borderwidth 0 \
1199                         -wrap none \
1200                         -background lightyellow \
1201                         -foreground black
1202                 $tooltip_t tag conf section_header -font font_uibold
1203                 pack $tooltip_t
1204         } else {
1205                 $tooltip_t conf -state normal
1206                 $tooltip_t delete 0.0 end
1207         }
1208
1209         set pos @[join [list \
1210                 [expr {$pos_x - [winfo rootx $cur_w]}] \
1211                 [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
1212         set lno [lindex [split [$cur_w index $pos] .] 0]
1213         if {$cur_w eq $w_amov} {
1214                 set dat [lindex $amov_data $lno]
1215                 set org {}
1216         } else {
1217                 set dat [lindex $asim_data $lno]
1218                 set org [lindex $amov_data $lno]
1219         }
1220
1221         if {$dat eq {}} {
1222                 _hide_tooltip $this
1223                 return
1224         }
1225
1226         set cmit [lindex $dat 0]
1227         set tooltip_commit [list $cmit]
1228
1229         set author_name {}
1230         set summary     {}
1231         set author_time {}
1232         catch {set author_name $header($cmit,author)}
1233         catch {set summary     $header($cmit,summary)}
1234         catch {set author_time [format_date $header($cmit,author-time)]}
1235
1236         $tooltip_t insert end "commit $cmit\n"
1237         $tooltip_t insert end "$author_name  $author_time\n"
1238         $tooltip_t insert end "$summary"
1239
1240         if {$org ne {} && [lindex $org 0] ne $cmit} {
1241                 set save [$tooltip_t get 0.0 end]
1242                 $tooltip_t delete 0.0 end
1243
1244                 set cmit [lindex $org 0]
1245                 set file [lindex $org 1]
1246                 lappend tooltip_commit $cmit
1247
1248                 set author_name {}
1249                 set summary     {}
1250                 set author_time {}
1251                 catch {set author_name $header($cmit,author)}
1252                 catch {set summary     $header($cmit,summary)}
1253                 catch {set author_time [format_date $header($cmit,author-time)]}
1254
1255                 $tooltip_t insert end [strcat [mc "Originally By:"] "\n"] section_header
1256                 $tooltip_t insert end "commit $cmit\n"
1257                 $tooltip_t insert end "$author_name  $author_time\n"
1258                 $tooltip_t insert end "$summary\n"
1259
1260                 if {$file ne $path} {
1261                         $tooltip_t insert end [strcat [mc "In File:"] " "] section_header
1262                         $tooltip_t insert end "$file\n"
1263                 }
1264
1265                 $tooltip_t insert end "\n"
1266                 $tooltip_t insert end [strcat [mc "Copied Or Moved Here By:"] "\n"] section_header
1267                 $tooltip_t insert end $save
1268         }
1269
1270         $tooltip_t conf -state disabled
1271         _position_tooltip $this
1272
1273         # On MacOS raising a window causes it to acquire focus.
1274         # Tk 8.5 on MacOS seems to properly support wm transient,
1275         # so we can safely counter the effect there.
1276         if {$::have_tk85 && [is_MacOSX]} {
1277                 update
1278                 if {$w eq {}} {
1279                         raise .
1280                 } else {
1281                         raise $w
1282                 }
1283         }
1284 }
1285
1286 method _position_tooltip {} {
1287         set max_h [lindex [split [$tooltip_t index end] .] 0]
1288         set max_w 0
1289         for {set i 1} {$i <= $max_h} {incr i} {
1290                 set c [lindex [split [$tooltip_t index "$i.0 lineend"] .] 1]
1291                 if {$c > $max_w} {set max_w $c}
1292         }
1293         $tooltip_t conf -width $max_w -height $max_h
1294
1295         set req_w [winfo reqwidth  $tooltip_t]
1296         set req_h [winfo reqheight $tooltip_t]
1297         set pos_x [expr {[winfo pointerx .] +  5}]
1298         set pos_y [expr {[winfo pointery .] + 10}]
1299
1300         set g "${req_w}x${req_h}"
1301         if {$pos_x >= 0} {append g +}
1302         append g $pos_x
1303         if {$pos_y >= 0} {append g +}
1304         append g $pos_y
1305
1306         wm geometry $tooltip_wm $g
1307         if {![is_MacOSX]} {
1308                 raise $tooltip_wm
1309         }
1310 }
1311
1312 method _hide_tooltip {} {
1313         if {$tooltip_wm ne {}} {
1314                 destroy $tooltip_wm
1315                 set tooltip_wm {}
1316                 set tooltip_commit {}
1317         }
1318         if {$tooltip_timer ne {}} {
1319                 after cancel $tooltip_timer
1320                 set tooltip_timer {}
1321         }
1322 }
1323
1324 method _resize {new_height} {
1325         set diff [expr {$new_height - $old_height}]
1326         if {$diff == 0} return
1327
1328         set my [expr {[winfo height $w.file_pane] - 25}]
1329         set o [$w.file_pane sash coord 0]
1330         set ox [lindex $o 0]
1331         set oy [expr {[lindex $o 1] + $diff}]
1332         if {$oy < 0}   {set oy 0}
1333         if {$oy > $my} {set oy $my}
1334         $w.file_pane sash place 0 $ox $oy
1335
1336         set old_height $new_height
1337 }
1338
1339 }