git.oblomov.eu Git - git/blob - lib/blame.tcl

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