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                         set fd [open |[list $textconv $path] r]
 464                 } else {
 465                         set fd [open $path r]
 466                 }
 467                 fconfigure $fd -eofchar {}
 468         } else {
 469                 if {$do_textconv ne 0} {
 470                         set fd [git_read cat-file --textconv "$commit:$path"]
 471                 } else {
 472                         set fd [git_read cat-file blob "$commit:$path"]
 473                 }
 474         }
 475         fconfigure $fd \
 476                 -blocking 0 \
 477                 -translation lf \
 478                 -encoding [get_path_encoding $path]
 479         fileevent $fd readable [cb _read_file $fd $jump]
 480         set current_fd $fd
 481 }
 482
 483 method _history_menu {} {
 484         set m $w.backmenu
 485         if {[winfo exists $m]} {
 486                 $m delete 0 end
 487         } else {
 488                 menu $m -tearoff 0
 489         }
 490
 491         for {set i [expr {[llength $history] - 1}]
 492                 } {$i >= 0} {incr i -1} {
 493                 set e [lindex $history $i]
 494                 set c [lindex $e 0]
 495                 set f [lindex $e 1]
 496
 497                 if {[regexp {^[0-9a-f]{40}$} $c]} {
 498                         set t [string range $c 0 8]...
 499                 } elseif {$c eq {}} {
 500                         set t {Working Directory}
 501                 } else {
 502                         set t $c
 503                 }
 504                 if {![catch {set summary $header($c,summary)}]} {
 505                         append t " $summary"
 506                         if {[string length $t] > 70} {
 507                                 set t [string range $t 0 66]...
 508                         }
 509                 }
 510
 511                 $m add command -label $t -command [cb _goback $i]
 512         }
 513         set X [winfo rootx $w_back]
 514         set Y [expr {[winfo rooty $w_back] + [winfo height $w_back]}]
 515         tk_popup $m $X $Y
 516 }
 517
 518 method _goback {i} {
 519         set dat [lindex $history $i]
 520         set history [lrange $history 0 [expr {$i - 1}]]
 521         set commit [lindex $dat 0]
 522         set path [lindex $dat 1]
 523         _load $this [lrange $dat 2 5]
 524 }
 525
 526 method _read_file {fd jump} {
 527         if {$fd ne $current_fd} {
 528                 catch {close $fd}
 529                 return
 530         }
 531
 532         foreach i $w_columns {$i conf -state normal}
 533         while {[gets $fd line] >= 0} {
 534                 regsub "\r\$" $line {} line
 535                 incr total_lines
 536                 lappend amov_data {}
 537                 lappend asim_data {}
 538
 539                 if {$total_lines > 1} {
 540                         foreach i $w_columns {$i insert end "\n"}
 541                 }
 542
 543                 $w_line insert end "$total_lines" linenumber
 544                 $w_file insert end "$line"
 545         }
 546
 547         set ln_wc [expr {[string length $total_lines] + 2}]
 548         if {[$w_line cget -width] < $ln_wc} {
 549                 $w_line conf -width $ln_wc
 550         }
 551
 552         foreach i $w_columns {$i conf -state disabled}
 553
 554         if {[eof $fd]} {
 555                 close $fd
 556
 557                 # If we don't force Tk to update the widgets *right now*
 558                 # none of our jump commands will cause a change in the UI.
 559                 #
 560                 update
 561
 562                 if {[llength $jump] == 1} {
 563                         set highlight_line [lindex $jump 0]
 564                         $w_file see "$highlight_line.0"
 565                 } elseif {[llength $jump] == 4} {
 566                         set highlight_column [lindex $jump 0]
 567                         set highlight_line [lindex $jump 1]
 568                         $w_file xview moveto [lindex $jump 2]
 569                         $w_file yview moveto [lindex $jump 3]
 570                 }
 571
 572                 _exec_blame $this $w_asim @asim_data \
 573                         [list] \
 574                         [mc "Loading copy/move tracking annotations..."]
 575         }
 576 } ifdeleted { catch {close $fd} }
 577
 578 method _exec_blame {cur_w cur_d options cur_s} {
 579         lappend options --incremental --encoding=utf-8
 580         if {$commit eq {}} {
 581                 lappend options --contents $path
 582         } else {
 583                 lappend options $commit
 584         }
 585         lappend options -- $path
 586         set fd [eval git_read --nice blame $options]
 587         fconfigure $fd -blocking 0 -translation lf -encoding utf-8
 588         fileevent $fd readable [cb _read_blame $fd $cur_w $cur_d]
 589         set current_fd $fd
 590         set blame_lines 0
 591
 592         $status start \
 593                 $cur_s \
 594                 [mc "lines annotated"]
 595 }
 596
 597 method _read_blame {fd cur_w cur_d} {
 598         upvar #0 $cur_d line_data
 599         variable group_colors
 600
 601         if {$fd ne $current_fd} {
 602                 catch {close $fd}
 603                 return
 604         }
 605
 606         $cur_w conf -state normal
 607         while {[gets $fd line] >= 0} {
 608                 if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
 609                         cmit original_line final_line line_count]} {
 610                         set r_commit     $cmit
 611                         set r_orig_line  $original_line
 612                         set r_final_line $final_line
 613                         set r_line_count $line_count
 614                 } elseif {[string match {filename *} $line]} {
 615                         set file [string range $line 9 end]
 616                         set n    $r_line_count
 617                         set lno  $r_final_line
 618                         set oln  $r_orig_line
 619                         set cmit $r_commit
 620
 621                         if {[regexp {^0{40}$} $cmit]} {
 622                                 set commit_abbr work
 623                                 set commit_type curr_commit
 624                         } elseif {$cmit eq $commit} {
 625                                 set commit_abbr this
 626                                 set commit_type curr_commit
 627                         } else {
 628                                 set commit_type prior_commit
 629                                 set commit_abbr [string range $cmit 0 3]
 630                         }
 631
 632                         set author_abbr {}
 633                         set a_name {}
 634                         catch {set a_name $header($cmit,author)}
 635                         while {$a_name ne {}} {
 636                                 if {$author_abbr ne {}
 637                                         && [string index $a_name 0] eq {'}} {
 638                                         regsub {^'[^']+'\s+} $a_name {} a_name
 639                                 }
 640                                 if {![regexp {^([[:upper:]])} $a_name _a]} break
 641                                 append author_abbr $_a
 642                                 unset _a
 643                                 if {![regsub \
 644                                         {^[[:upper:]][^\s]*\s+} \
 645                                         $a_name {} a_name ]} break
 646                         }
 647                         if {$author_abbr eq {}} {
 648                                 set author_abbr { |}
 649                         } else {
 650                                 set author_abbr [string range $author_abbr 0 3]
 651                         }
 652                         unset a_name
 653
 654                         set first_lno $lno
 655                         while {
 656                            $first_lno > 1
 657                         && $cmit eq [lindex $line_data [expr {$first_lno - 1}] 0]
 658                         && $file eq [lindex $line_data [expr {$first_lno - 1}] 1]
 659                         } {
 660                                 incr first_lno -1
 661                         }
 662
 663                         set color {}
 664                         if {$first_lno < $lno} {
 665                                 foreach g [$w_file tag names $first_lno.0] {
 666                                         if {[regexp {^color[0-9]+$} $g]} {
 667                                                 set color $g
 668                                                 break
 669                                         }
 670                                 }
 671                         } else {
 672                                 set i [lsort [concat \
 673                                         [$w_file tag names "[expr {$first_lno - 1}].0"] \
 674                                         [$w_file tag names "[expr {$lno + $n}].0"] \
 675                                         ]]
 676                                 for {set g 0} {$g < [llength $group_colors]} {incr g} {
 677                                         if {[lsearch -sorted -exact $i color$g] == -1} {
 678                                                 set color color$g
 679                                                 break
 680                                         }
 681                                 }
 682                         }
 683                         if {$color eq {}} {
 684                                 set color color0
 685                         }
 686
 687                         while {$n > 0} {
 688                                 set lno_e "$lno.0 lineend + 1c"
 689                                 if {[lindex $line_data $lno] ne {}} {
 690                                         set g [lindex $line_data $lno 0]
 691                                         foreach i $w_columns {
 692                                                 $i tag remove g$g $lno.0 $lno_e
 693                                         }
 694                                 }
 695                                 lset line_data $lno [list $cmit $file $oln]
 696
 697                                 $cur_w delete $lno.0 "$lno.0 lineend"
 698                                 if {$lno == $first_lno} {
 699                                         $cur_w insert $lno.0 $commit_abbr $commit_type
 700                                 } elseif {$lno == [expr {$first_lno + 1}]} {
 701                                         $cur_w insert $lno.0 $author_abbr author_abbr
 702                                 } else {
 703                                         $cur_w insert $lno.0 { |}
 704                                 }
 705
 706                                 foreach i $w_columns {
 707                                         if {$cur_w eq $w_amov} {
 708                                                 for {set g 0} \
 709                                                         {$g < [llength $group_colors]} \
 710                                                         {incr g} {
 711                                                         $i tag remove color$g $lno.0 $lno_e
 712                                                 }
 713                                                 $i tag add $color $lno.0 $lno_e
 714                                         }
 715                                         $i tag add g$cmit $lno.0 $lno_e
 716                                 }
 717
 718                                 if {$highlight_column eq $cur_w} {
 719                                         if {$highlight_line == -1
 720                                          && [lindex [$w_file yview] 0] == 0} {
 721                                                 $w_file see $lno.0
 722                                                 set highlight_line $lno
 723                                         }
 724                                         if {$highlight_line == $lno} {
 725                                                 _showcommit $this $cur_w $lno
 726                                         }
 727                                 }
 728
 729                                 incr n -1
 730                                 incr lno
 731                                 incr oln
 732                                 incr blame_lines
 733                         }
 734
 735                         while {
 736                            $cmit eq [lindex $line_data $lno 0]
 737                         && $file eq [lindex $line_data $lno 1]
 738                         } {
 739                                 $cur_w delete $lno.0 "$lno.0 lineend"
 740
 741                                 if {$lno == $first_lno} {
 742                                         $cur_w insert $lno.0 $commit_abbr $commit_type
 743                                 } elseif {$lno == [expr {$first_lno + 1}]} {
 744                                         $cur_w insert $lno.0 $author_abbr author_abbr
 745                                 } else {
 746                                         $cur_w insert $lno.0 { |}
 747                                 }
 748
 749                                 if {$cur_w eq $w_amov} {
 750                                         foreach i $w_columns {
 751                                                 for {set g 0} \
 752                                                         {$g < [llength $group_colors]} \
 753                                                         {incr g} {
 754                                                         $i tag remove color$g $lno.0 $lno_e
 755                                                 }
 756                                                 $i tag add $color $lno.0 $lno_e
 757                                         }
 758                                 }
 759
 760                                 incr lno
 761                         }
 762
 763                 } elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
 764                         set header($r_commit,$key) $data
 765                 }
 766         }
 767         $cur_w conf -state disabled
 768
 769         if {[eof $fd]} {
 770                 close $fd
 771                 if {$cur_w eq $w_asim} {
 772                         # Switches for original location detection
 773                         set threshold [get_config gui.copyblamethreshold]
 774                         set original_options [list "-C$threshold"]
 775
 776                         if {![is_config_true gui.fastcopyblame]} {
 777                                 # thorough copy search; insert before the threshold
 778                                 set original_options [linsert $original_options 0 -C]
 779                         }
 780                         if {[git-version >= 1.5.3]} {
 781                                 lappend original_options -w ; # ignore indentation changes
 782                         }
 783
 784                         _exec_blame $this $w_amov @amov_data \
 785                                 $original_options \
 786                                 [mc "Loading original location annotations..."]
 787                 } else {
 788                         set current_fd {}
 789                         $status stop [mc "Annotation complete."]
 790                 }
 791         } else {
 792                 $status update $blame_lines $total_lines
 793         }
 794 } ifdeleted { catch {close $fd} }
 795
 796 method _find_commit_bound {data_list start_idx delta} {
 797         upvar #0 $data_list line_data
 798         set pos $start_idx
 799         set limit       [expr {[llength $line_data] - 1}]
 800         set base_commit [lindex $line_data $pos 0]
 801
 802         while {$pos > 0 && $pos < $limit} {
 803                 set new_pos [expr {$pos + $delta}]
 804                 if {[lindex $line_data $new_pos 0] ne $base_commit} {
 805                         return $pos
 806                 }
 807
 808                 set pos $new_pos
 809         }
 810
 811         return $pos
 812 }
 813
 814 method _fullcopyblame {} {
 815         if {$current_fd ne {}} {
 816                 tk_messageBox \
 817                         -icon error \
 818                         -type ok \
 819                         -title [mc "Busy"] \
 820                         -message [mc "Annotation process is already running."]
 821
 822                 return
 823         }
 824
 825         # Switches for original location detection
 826         set threshold [get_config gui.copyblamethreshold]
 827         set original_options [list -C -C "-C$threshold"]
 828
 829         if {[git-version >= 1.5.3]} {
 830                 lappend original_options -w ; # ignore indentation changes
 831         }
 832
 833         # Find the line range
 834         set pos @$::cursorX,$::cursorY
 835         set lno [lindex [split [$::cursorW index $pos] .] 0]
 836         set min_amov_lno [_find_commit_bound $this @amov_data $lno -1]
 837         set max_amov_lno [_find_commit_bound $this @amov_data $lno 1]
 838         set min_asim_lno [_find_commit_bound $this @asim_data $lno -1]
 839         set max_asim_lno [_find_commit_bound $this @asim_data $lno 1]
 840
 841         if {$min_asim_lno < $min_amov_lno} {
 842                 set min_amov_lno $min_asim_lno
 843         }
 844
 845         if {$max_asim_lno > $max_amov_lno} {
 846                 set max_amov_lno $max_asim_lno
 847         }
 848
 849         lappend original_options -L "$min_amov_lno,$max_amov_lno"
 850
 851         # Clear lines
 852         for {set i $min_amov_lno} {$i <= $max_amov_lno} {incr i} {
 853                 lset amov_data $i [list ]
 854         }
 855
 856         # Start the back-end process
 857         _exec_blame $this $w_amov @amov_data \
 858                 $original_options \
 859                 [mc "Running thorough copy detection..."]
 860 }
 861
 862 method _click {cur_w pos} {
 863         set lno [lindex [split [$cur_w index $pos] .] 0]
 864         _showcommit $this $cur_w $lno
 865 }
 866
 867 method _setencoding {enc} {
 868         force_path_encoding $path $enc
 869         _load $this [list \
 870                 $highlight_column \
 871                 $highlight_line \
 872                 [lindex [$w_file xview] 0] \
 873                 [lindex [$w_file yview] 0] \
 874                 ]
 875 }
 876
 877 method _load_commit {cur_w cur_d pos} {
 878         upvar #0 $cur_d line_data
 879         set lno [lindex [split [$cur_w index $pos] .] 0]
 880         set dat [lindex $line_data $lno]
 881         if {$dat ne {}} {
 882                 _load_new_commit $this  \
 883                         [lindex $dat 0] \
 884                         [lindex $dat 1] \
 885                         [list [lindex $dat 2]]
 886         }
 887 }
 888
 889 method _load_new_commit {new_commit new_path jump} {
 890         lappend history [list \
 891                 $commit $path \
 892                 $highlight_column \
 893                 $highlight_line \
 894                 [lindex [$w_file xview] 0] \
 895                 [lindex [$w_file yview] 0] \
 896                 ]
 897
 898         set commit $new_commit
 899         set path   $new_path
 900         _load $this $jump
 901 }
 902
 903 method _showcommit {cur_w lno} {
 904         global repo_config
 905         variable active_color
 906
 907         if {$highlight_commit ne {}} {
 908                 foreach i $w_columns {
 909                         $i tag conf g$highlight_commit -background {}
 910                         $i tag lower g$highlight_commit
 911                 }
 912         }
 913
 914         if {$cur_w eq $w_asim} {
 915                 set dat [lindex $asim_data $lno]
 916                 set highlight_column $w_asim
 917         } else {
 918                 set dat [lindex $amov_data $lno]
 919                 set highlight_column $w_amov
 920         }
 921
 922         $w_cviewer conf -state normal
 923         $w_cviewer delete 0.0 end
 924
 925         if {$dat eq {}} {
 926                 set cmit {}
 927                 $w_cviewer insert end [mc "Loading annotation..."] still_loading
 928         } else {
 929                 set cmit [lindex $dat 0]
 930                 set file [lindex $dat 1]
 931
 932                 foreach i $w_columns {
 933                         $i tag conf g$cmit -background $active_color
 934                         $i tag raise g$cmit
 935                         if {$i eq $w_file} {
 936                                 $w_file tag raise found
 937                         }
 938                         $i tag raise sel
 939                 }
 940
 941                 set author_name {}
 942                 set author_email {}
 943                 set author_time {}
 944                 catch {set author_name $header($cmit,author)}
 945                 catch {set author_email $header($cmit,author-mail)}
 946                 catch {set author_time [format_date $header($cmit,author-time)]}
 947
 948                 set committer_name {}
 949                 set committer_email {}
 950                 set committer_time {}
 951                 catch {set committer_name $header($cmit,committer)}
 952                 catch {set committer_email $header($cmit,committer-mail)}
 953                 catch {set committer_time [format_date $header($cmit,committer-time)]}
 954
 955                 if {[catch {set msg $header($cmit,message)}]} {
 956                         set msg {}
 957                         catch {
 958                                 set fd [git_read cat-file commit $cmit]
 959                                 fconfigure $fd -encoding binary -translation lf
 960                                 # By default commits are assumed to be in utf-8
 961                                 set enc utf-8
 962                                 while {[gets $fd line] > 0} {
 963                                         if {[string match {encoding *} $line]} {
 964                                                 set enc [string tolower [string range $line 9 end]]
 965                                         }
 966                                 }
 967                                 set msg [read $fd]
 968                                 close $fd
 969
 970                                 set enc [tcl_encoding $enc]
 971                                 if {$enc ne {}} {
 972                                         set msg [encoding convertfrom $enc $msg]
 973                                 }
 974                                 set msg [string trim $msg]
 975                         }
 976                         set header($cmit,message) $msg
 977                 }
 978
 979                 $w_cviewer insert end "commit $cmit\n" header_key
 980                 $w_cviewer insert end [strcat [mc "Author:"] "\t"] header_key
 981                 $w_cviewer insert end "$author_name $author_email" header_val
 982                 $w_cviewer insert end "  $author_time\n" header_val
 983
 984                 $w_cviewer insert end [strcat [mc "Committer:"] "\t"] header_key
 985                 $w_cviewer insert end "$committer_name $committer_email" header_val
 986                 $w_cviewer insert end "  $committer_time\n" header_val
 987
 988                 if {$file ne $path} {
 989                         $w_cviewer insert end [strcat [mc "Original File:"] "\t"] header_key
 990                         $w_cviewer insert end "[escape_path $file]\n" header_val
 991                 }
 992
 993                 $w_cviewer insert end "\n$msg"
 994         }
 995         $w_cviewer conf -state disabled
 996
 997         set highlight_line $lno
 998         set highlight_commit $cmit
 999
1000         if {[lsearch -exact $tooltip_commit $highlight_commit] != -1} {
1001                 _hide_tooltip $this
1002         }
1003 }
1004
1005 method _get_click_amov_info {} {
1006         set pos @$::cursorX,$::cursorY
1007         set lno [lindex [split [$::cursorW index $pos] .] 0]
1008         return [lindex $amov_data $lno]
1009 }
1010
1011 method _copycommit {} {
1012         set dat [_get_click_amov_info $this]
1013         if {$dat ne {}} {
1014                 clipboard clear
1015                 clipboard append \
1016                         -format STRING \
1017                         -type STRING \
1018                         -- [lindex $dat 0]
1019         }
1020 }
1021
1022 method _format_offset_date {base offset} {
1023         set exval [expr {$base + $offset*24*60*60}]
1024         return [clock format $exval -format {%Y-%m-%d}]
1025 }
1026
1027 method _gitkcommit {} {
1028         global nullid
1029
1030         set dat [_get_click_amov_info $this]
1031         if {$dat ne {}} {
1032                 set cmit [lindex $dat 0]
1033
1034                 # If the line belongs to the working copy, use HEAD instead
1035                 if {$cmit eq $nullid} {
1036                         if {[catch {set cmit [git rev-parse --verify HEAD]} err]} {
1037                                 error_popup [strcat [mc "Cannot find HEAD commit:"] "\n\n$err"]
1038                                 return;
1039                         }
1040                 }
1041
1042                 set radius [get_config gui.blamehistoryctx]
1043                 set cmdline [list --select-commit=$cmit]
1044
1045                 if {$radius > 0} {
1046                         set author_time {}
1047                         set committer_time {}
1048
1049                         catch {set author_time $header($cmit,author-time)}
1050                         catch {set committer_time $header($cmit,committer-time)}
1051
1052                         if {$committer_time eq {}} {
1053                                 set committer_time $author_time
1054                         }
1055
1056                         set after_time [_format_offset_date $this $committer_time [expr {-$radius}]]
1057                         set before_time [_format_offset_date $this $committer_time $radius]
1058
1059                         lappend cmdline --after=$after_time --before=$before_time
1060                 }
1061
1062                 lappend cmdline $cmit
1063
1064                 set base_rev "HEAD"
1065                 if {$commit ne {}} {
1066                         set base_rev $commit
1067                 }
1068
1069                 if {$base_rev ne $cmit} {
1070                         lappend cmdline $base_rev
1071                 }
1072
1073                 do_gitk $cmdline
1074         }
1075 }
1076
1077 method _blameparent {} {
1078         global nullid
1079
1080         set dat [_get_click_amov_info $this]
1081         if {$dat ne {}} {
1082                 set cmit [lindex $dat 0]
1083                 set new_path [lindex $dat 1]
1084
1085                 # Allow using Blame Parent on lines modified in the working copy
1086                 if {$cmit eq $nullid} {
1087                         set parent_ref "HEAD"
1088                 } else {
1089                         set parent_ref "$cmit^"
1090                 }
1091                 if {[catch {set cparent [git rev-parse --verify $parent_ref]} err]} {
1092                         error_popup [strcat [mc "Cannot find parent commit:"] "\n\n$err"]
1093                         return;
1094                 }
1095
1096                 _kill $this
1097
1098                 # Generate a diff between the commit and its parent,
1099                 # and use the hunks to update the line number.
1100                 # Request zero context to simplify calculations.
1101                 if {$cmit eq $nullid} {
1102                         set diffcmd [list diff-index --unified=0 $cparent -- $new_path]
1103                 } else {
1104                         set diffcmd [list diff-tree --unified=0 $cparent $cmit -- $new_path]
1105                 }
1106                 if {[catch {set fd [eval git_read $diffcmd]} err]} {
1107                         $status stop [mc "Unable to display parent"]
1108                         error_popup [strcat [mc "Error loading diff:"] "\n\n$err"]
1109                         return
1110                 }
1111
1112                 set r_orig_line [lindex $dat 2]
1113
1114                 fconfigure $fd \
1115                         -blocking 0 \
1116                         -encoding binary \
1117                         -translation binary
1118                 fileevent $fd readable [cb _read_diff_load_commit \
1119                         $fd $cparent $new_path $r_orig_line]
1120                 set current_fd $fd
1121         }
1122 }
1123
1124 method _read_diff_load_commit {fd cparent new_path tline} {
1125         if {$fd ne $current_fd} {
1126                 catch {close $fd}
1127                 return
1128         }
1129
1130         while {[gets $fd line] >= 0} {
1131                 if {[regexp {^@@ -(\d+)(,(\d+))? \+(\d+)(,(\d+))? @@} $line line \
1132                         old_line osz old_size new_line nsz new_size]} {
1133
1134                         if {$osz eq {}} { set old_size 1 }
1135                         if {$nsz eq {}} { set new_size 1 }
1136
1137                         if {$new_line <= $tline} {
1138                                 if {[expr {$new_line + $new_size}] > $tline} {
1139                                         # Target line within the hunk
1140                                         set line_shift [expr {
1141                                                 ($new_size-$old_size)*($tline-$new_line)/$new_size
1142                                                 }]
1143                                 } else {
1144                                         set line_shift [expr {$new_size-$old_size}]
1145                                 }
1146
1147                                 set r_orig_line [expr {$r_orig_line - $line_shift}]
1148                         }
1149                 }
1150         }
1151
1152         if {[eof $fd]} {
1153                 close $fd;
1154                 set current_fd {}
1155
1156                 _load_new_commit $this  \
1157                         $cparent        \
1158                         $new_path       \
1159                         [list $r_orig_line]
1160         }
1161 } ifdeleted { catch {close $fd} }
1162
1163 method _show_tooltip {cur_w pos} {
1164         if {$tooltip_wm ne {}} {
1165                 _open_tooltip $this $cur_w
1166         } elseif {$tooltip_timer eq {}} {
1167                 set tooltip_timer [after 1000 [cb _open_tooltip $cur_w]]
1168         }
1169 }
1170
1171 method _open_tooltip {cur_w} {
1172         set tooltip_timer {}
1173         set pos_x [winfo pointerx $cur_w]
1174         set pos_y [winfo pointery $cur_w]
1175         if {[winfo containing $pos_x $pos_y] ne $cur_w} {
1176                 _hide_tooltip $this
1177                 return
1178         }
1179
1180         if {$tooltip_wm ne "$cur_w.tooltip"} {
1181                 _hide_tooltip $this
1182
1183                 set tooltip_wm [toplevel $cur_w.tooltip -borderwidth 1]
1184                 wm overrideredirect $tooltip_wm 1
1185                 wm transient $tooltip_wm [winfo toplevel $cur_w]
1186                 set tooltip_t $tooltip_wm.label
1187                 text $tooltip_t \
1188                         -takefocus 0 \
1189                         -highlightthickness 0 \
1190                         -relief flat \
1191                         -borderwidth 0 \
1192                         -wrap none \
1193                         -background lightyellow \
1194                         -foreground black
1195                 $tooltip_t tag conf section_header -font font_uibold
1196                 pack $tooltip_t
1197         } else {
1198                 $tooltip_t conf -state normal
1199                 $tooltip_t delete 0.0 end
1200         }
1201
1202         set pos @[join [list \
1203                 [expr {$pos_x - [winfo rootx $cur_w]}] \
1204                 [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
1205         set lno [lindex [split [$cur_w index $pos] .] 0]
1206         if {$cur_w eq $w_amov} {
1207                 set dat [lindex $amov_data $lno]
1208                 set org {}
1209         } else {
1210                 set dat [lindex $asim_data $lno]
1211                 set org [lindex $amov_data $lno]
1212         }
1213
1214         if {$dat eq {}} {
1215                 _hide_tooltip $this
1216                 return
1217         }
1218
1219         set cmit [lindex $dat 0]
1220         set tooltip_commit [list $cmit]
1221
1222         set author_name {}
1223         set summary     {}
1224         set author_time {}
1225         catch {set author_name $header($cmit,author)}
1226         catch {set summary     $header($cmit,summary)}
1227         catch {set author_time [format_date $header($cmit,author-time)]}
1228
1229         $tooltip_t insert end "commit $cmit\n"
1230         $tooltip_t insert end "$author_name  $author_time\n"
1231         $tooltip_t insert end "$summary"
1232
1233         if {$org ne {} && [lindex $org 0] ne $cmit} {
1234                 set save [$tooltip_t get 0.0 end]
1235                 $tooltip_t delete 0.0 end
1236
1237                 set cmit [lindex $org 0]
1238                 set file [lindex $org 1]
1239                 lappend tooltip_commit $cmit
1240
1241                 set author_name {}
1242                 set summary     {}
1243                 set author_time {}
1244                 catch {set author_name $header($cmit,author)}
1245                 catch {set summary     $header($cmit,summary)}
1246                 catch {set author_time [format_date $header($cmit,author-time)]}
1247
1248                 $tooltip_t insert end [strcat [mc "Originally By:"] "\n"] section_header
1249                 $tooltip_t insert end "commit $cmit\n"
1250                 $tooltip_t insert end "$author_name  $author_time\n"
1251                 $tooltip_t insert end "$summary\n"
1252
1253                 if {$file ne $path} {
1254                         $tooltip_t insert end [strcat [mc "In File:"] " "] section_header
1255                         $tooltip_t insert end "$file\n"
1256                 }
1257
1258                 $tooltip_t insert end "\n"
1259                 $tooltip_t insert end [strcat [mc "Copied Or Moved Here By:"] "\n"] section_header
1260                 $tooltip_t insert end $save
1261         }
1262
1263         $tooltip_t conf -state disabled
1264         _position_tooltip $this
1265
1266         # On MacOS raising a window causes it to acquire focus.
1267         # Tk 8.5 on MacOS seems to properly support wm transient,
1268         # so we can safely counter the effect there.
1269         if {$::have_tk85 && [is_MacOSX]} {
1270                 update
1271                 if {$w eq {}} {
1272                         raise .
1273                 } else {
1274                         raise $w
1275                 }
1276         }
1277 }
1278
1279 method _position_tooltip {} {
1280         set max_h [lindex [split [$tooltip_t index end] .] 0]
1281         set max_w 0
1282         for {set i 1} {$i <= $max_h} {incr i} {
1283                 set c [lindex [split [$tooltip_t index "$i.0 lineend"] .] 1]
1284                 if {$c > $max_w} {set max_w $c}
1285         }
1286         $tooltip_t conf -width $max_w -height $max_h
1287
1288         set req_w [winfo reqwidth  $tooltip_t]
1289         set req_h [winfo reqheight $tooltip_t]
1290         set pos_x [expr {[winfo pointerx .] +  5}]
1291         set pos_y [expr {[winfo pointery .] + 10}]
1292
1293         set g "${req_w}x${req_h}"
1294         if {$pos_x >= 0} {append g +}
1295         append g $pos_x
1296         if {$pos_y >= 0} {append g +}
1297         append g $pos_y
1298
1299         wm geometry $tooltip_wm $g
1300         if {![is_MacOSX]} {
1301                 raise $tooltip_wm
1302         }
1303 }
1304
1305 method _hide_tooltip {} {
1306         if {$tooltip_wm ne {}} {
1307                 destroy $tooltip_wm
1308                 set tooltip_wm {}
1309                 set tooltip_commit {}
1310         }
1311         if {$tooltip_timer ne {}} {
1312                 after cancel $tooltip_timer
1313                 set tooltip_timer {}
1314         }
1315 }
1316
1317 method _resize {new_height} {
1318         set diff [expr {$new_height - $old_height}]
1319         if {$diff == 0} return
1320
1321         set my [expr {[winfo height $w.file_pane] - 25}]
1322         set o [$w.file_pane sash coord 0]
1323         set ox [lindex $o 0]
1324         set oy [expr {[lindex $o 1] + $diff}]
1325         if {$oy < 0}   {set oy 0}
1326         if {$oy > $my} {set oy $my}
1327         $w.file_pane sash place 0 $ox $oy
1328
1329         set old_height $new_height
1330 }
1331
1332 }