git-gui/lib/blame.tcl

   1 # git-gui blame viewer
   2 # Copyright (C) 2006, 2007 Shawn Pearce
   3
   4 class blame {
   5
   6 image create photo ::blame::img_back_arrow -data {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}
   7
   8 # Persistant data (survives loads)
   9 #
  10 field history {}; # viewer history: {commit path}
  11 field header    ; # array commit,key -> header field
  12
  13 # Tk UI control paths
  14 #
  15 field w          ; # top window in this viewer
  16 field w_back     ; # our back button
  17 field w_path     ; # label showing the current file path
  18 field w_columns  ; # list of all column widgets in the viewer
  19 field w_line     ; # text column: all line numbers
  20 field w_amov     ; # text column: annotations + move tracking
  21 field w_asim     ; # text column: annotations (simple computation)
  22 field w_file     ; # text column: actual file data
  23 field w_cviewer  ; # pane showing commit message
  24 field status     ; # text variable bound to status bar
  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 # Current blame data; cleared/reset on each load
  37 #
  38 field commit               ; # input commit to blame
  39 field path                 ; # input filename to view in $commit
  40
  41 field current_fd        {} ; # background process running
  42 field highlight_line    -1 ; # current line selected
  43 field highlight_column  {} ; # current commit column selected
  44 field highlight_commit  {} ; # sha1 of commit selected
  45
  46 field total_lines       0  ; # total length of file
  47 field blame_lines       0  ; # number of lines computed
  48 field amov_data            ; # list of {commit origfile origline}
  49 field asim_data            ; # list of {commit origfile origline}
  50
  51 field r_commit             ; # commit currently being parsed
  52 field r_orig_line          ; # original line number
  53 field r_final_line         ; # final line number
  54 field r_line_count         ; # lines in this region
  55
  56 field tooltip_wm        {} ; # Current tooltip toplevel, if open
  57 field tooltip_t         {} ; # Text widget in $tooltip_wm
  58 field tooltip_timer     {} ; # Current timer event for our tooltip
  59 field tooltip_commit    {} ; # Commit(s) in tooltip
  60
  61 constructor new {i_commit i_path} {
  62         global cursor_ptr
  63         variable active_color
  64         variable group_colors
  65
  66         set commit $i_commit
  67         set path   $i_path
  68
  69         make_toplevel top w
  70         wm title $top "[appname] ([reponame]): File Viewer"
  71
  72         frame $w.header -background gold
  73         label $w.header.commit_l \
  74                 -text {Commit:} \
  75                 -background gold \
  76                 -anchor w \
  77                 -justify left
  78         set w_back $w.header.commit_b
  79         label $w_back \
  80                 -image ::blame::img_back_arrow \
  81                 -borderwidth 0 \
  82                 -relief flat \
  83                 -state disabled \
  84                 -background gold \
  85                 -activebackground gold
  86         bind $w_back <Button-1> "
  87                 if {\[$w_back cget -state\] eq {normal}} {
  88                         [cb _history_menu]
  89                 }
  90                 "
  91         label $w.header.commit \
  92                 -textvariable @commit \
  93                 -background gold \
  94                 -anchor w \
  95                 -justify left
  96         label $w.header.path_l \
  97                 -text {File:} \
  98                 -background gold \
  99                 -anchor w \
 100                 -justify left
 101         set w_path $w.header.path
 102         label $w_path \
 103                 -background gold \
 104                 -anchor w \
 105                 -justify left
 106         pack $w.header.commit_l -side left
 107         pack $w_back -side left
 108         pack $w.header.commit -side left
 109         pack $w_path -fill x -side right
 110         pack $w.header.path_l -side right
 111
 112         panedwindow $w.file_pane -orient vertical
 113         frame $w.file_pane.out
 114         frame $w.file_pane.cm
 115         $w.file_pane add $w.file_pane.out \
 116                 -sticky nsew \
 117                 -minsize 100 \
 118                 -height 100 \
 119                 -width 100
 120         $w.file_pane add $w.file_pane.cm \
 121                 -sticky nsew \
 122                 -minsize 25 \
 123                 -height 25 \
 124                 -width 100
 125
 126         set w_line $w.file_pane.out.linenumber_t
 127         text $w_line \
 128                 -takefocus 0 \
 129                 -highlightthickness 0 \
 130                 -padx 0 -pady 0 \
 131                 -background white -borderwidth 0 \
 132                 -state disabled \
 133                 -wrap none \
 134                 -height 40 \
 135                 -width 6 \
 136                 -font font_diff
 137         $w_line tag conf linenumber -justify right -rmargin 5
 138
 139         set w_amov $w.file_pane.out.amove_t
 140         text $w_amov \
 141                 -takefocus 0 \
 142                 -highlightthickness 0 \
 143                 -padx 0 -pady 0 \
 144                 -background white -borderwidth 0 \
 145                 -state disabled \
 146                 -wrap none \
 147                 -height 40 \
 148                 -width 5 \
 149                 -font font_diff
 150         $w_amov tag conf author_abbr -justify right -rmargin 5
 151         $w_amov tag conf curr_commit
 152         $w_amov tag conf prior_commit -foreground blue -underline 1
 153         $w_amov tag bind prior_commit \
 154                 <Button-1> \
 155                 "[cb _load_commit $w_amov @amov_data @%x,%y];break"
 156
 157         set w_asim $w.file_pane.out.asimple_t
 158         text $w_asim \
 159                 -takefocus 0 \
 160                 -highlightthickness 0 \
 161                 -padx 0 -pady 0 \
 162                 -background white -borderwidth 0 \
 163                 -state disabled \
 164                 -wrap none \
 165                 -height 40 \
 166                 -width 4 \
 167                 -font font_diff
 168         $w_asim tag conf author_abbr -justify right
 169         $w_asim tag conf curr_commit
 170         $w_asim tag conf prior_commit -foreground blue -underline 1
 171         $w_asim tag bind prior_commit \
 172                 <Button-1> \
 173                 "[cb _load_commit $w_asim @asim_data @%x,%y];break"
 174
 175         set w_file $w.file_pane.out.file_t
 176         text $w_file \
 177                 -takefocus 0 \
 178                 -highlightthickness 0 \
 179                 -padx 0 -pady 0 \
 180                 -background white -borderwidth 0 \
 181                 -state disabled \
 182                 -wrap none \
 183                 -height 40 \
 184                 -width 80 \
 185                 -xscrollcommand [list $w.file_pane.out.sbx set] \
 186                 -font font_diff
 187
 188         set w_columns [list $w_amov $w_asim $w_line $w_file]
 189
 190         scrollbar $w.file_pane.out.sbx \
 191                 -orient h \
 192                 -command [list $w_file xview]
 193         scrollbar $w.file_pane.out.sby \
 194                 -orient v \
 195                 -command [list scrollbar2many $w_columns yview]
 196         eval grid $w_columns $w.file_pane.out.sby -sticky nsew
 197         grid conf \
 198                 $w.file_pane.out.sbx \
 199                 -column [expr {[llength $w_columns] - 1}] \
 200                 -sticky we
 201         grid columnconfigure \
 202                 $w.file_pane.out \
 203                 [expr {[llength $w_columns] - 1}] \
 204                 -weight 1
 205         grid rowconfigure $w.file_pane.out 0 -weight 1
 206
 207         set w_cviewer $w.file_pane.cm.t
 208         text $w_cviewer \
 209                 -background white -borderwidth 0 \
 210                 -state disabled \
 211                 -wrap none \
 212                 -height 10 \
 213                 -width 80 \
 214                 -xscrollcommand [list $w.file_pane.cm.sbx set] \
 215                 -yscrollcommand [list $w.file_pane.cm.sby set] \
 216                 -font font_diff
 217         $w_cviewer tag conf still_loading \
 218                 -font font_uiitalic \
 219                 -justify center
 220         $w_cviewer tag conf header_key \
 221                 -tabs {3c} \
 222                 -background $active_color \
 223                 -font font_uibold
 224         $w_cviewer tag conf header_val \
 225                 -background $active_color \
 226                 -font font_ui
 227         $w_cviewer tag raise sel
 228         scrollbar $w.file_pane.cm.sbx \
 229                 -orient h \
 230                 -command [list $w_cviewer xview]
 231         scrollbar $w.file_pane.cm.sby \
 232                 -orient v \
 233                 -command [list $w_cviewer yview]
 234         pack $w.file_pane.cm.sby -side right -fill y
 235         pack $w.file_pane.cm.sbx -side bottom -fill x
 236         pack $w_cviewer -expand 1 -fill both
 237
 238         frame $w.status \
 239                 -borderwidth 1 \
 240                 -relief sunken
 241         label $w.status.l \
 242                 -textvariable @status \
 243                 -anchor w \
 244                 -justify left
 245         pack $w.status.l -side left
 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 $top]
 307         if {$req_w < 600} {set req_w 600}
 308         if {$req_h < 400} {set req_h 400}
 309         set g "${req_w}x${req_h}"
 310         wm geometry $top $g
 311         update
 312
 313         set old_height [winfo height $w.file_pane]
 314         $w.file_pane sash place 0 \
 315                 [lindex [$w.file_pane sash coord 0] 0] \
 316                 [expr {int($old_height * 0.70)}]
 317         bind $w.file_pane <Configure> \
 318         "if {{$w.file_pane} eq {%W}} {[cb _resize %h]}"
 319
 320         _load $this {}
 321 }
 322
 323 method _load {jump} {
 324         variable group_colors
 325
 326         _hide_tooltip $this
 327
 328         if {$total_lines != 0 || $current_fd ne {}} {
 329                 if {$current_fd ne {}} {
 330                         catch {close $current_fd}
 331                         set current_fd {}
 332                 }
 333
 334                 foreach i $w_columns {
 335                         $i conf -state normal
 336                         $i delete 0.0 end
 337                         foreach g [$i tag names] {
 338                                 if {[regexp {^g[0-9a-f]{40}$} $g]} {
 339                                         $i tag delete $g
 340                                 }
 341                         }
 342                         $i conf -state disabled
 343                 }
 344
 345                 $w_cviewer conf -state normal
 346                 $w_cviewer delete 0.0 end
 347                 $w_cviewer conf -state disabled
 348
 349                 set highlight_line -1
 350                 set highlight_column {}
 351                 set highlight_commit {}
 352                 set total_lines 0
 353         }
 354
 355         if {[winfo exists $w.status.c]} {
 356                 $w.status.c coords bar 0 0 0 20
 357         } else {
 358                 canvas $w.status.c \
 359                         -width 100 \
 360                         -height [expr {int([winfo reqheight $w.status.l] * 0.6)}] \
 361                         -borderwidth 1 \
 362                         -relief groove \
 363                         -highlightt 0
 364                 $w.status.c create rectangle 0 0 0 20 -tags bar -fill navy
 365                 pack $w.status.c -side right
 366         }
 367
 368         if {$history eq {}} {
 369                 $w_back conf -state disabled
 370         } else {
 371                 $w_back conf -state normal
 372         }
 373
 374         # Index 0 is always empty.  There is never line 0 as
 375         # we use only 1 based lines, as that matches both with
 376         # git-blame output and with Tk's text widget.
 377         #
 378         set amov_data [list [list]]
 379         set asim_data [list [list]]
 380
 381         set status "Loading $commit:[escape_path $path]..."
 382         $w_path conf -text [escape_path $path]
 383         if {$commit eq {}} {
 384                 set fd [open $path r]
 385         } else {
 386                 set cmd [list git cat-file blob "$commit:$path"]
 387                 set fd [open "| $cmd" r]
 388         }
 389         fconfigure $fd -blocking 0 -translation lf -encoding binary
 390         fileevent $fd readable [cb _read_file $fd $jump]
 391         set current_fd $fd
 392 }
 393
 394 method _history_menu {} {
 395         set m $w.backmenu
 396         if {[winfo exists $m]} {
 397                 $m delete 0 end
 398         } else {
 399                 menu $m -tearoff 0
 400         }
 401
 402         for {set i [expr {[llength $history] - 1}]
 403                 } {$i >= 0} {incr i -1} {
 404                 set e [lindex $history $i]
 405                 set c [lindex $e 0]
 406                 set f [lindex $e 1]
 407
 408                 if {[regexp {^[0-9a-f]{40}$} $c]} {
 409                         set t [string range $c 0 8]...
 410                 } elseif {$c eq {}} {
 411                         set t {Working Directory}
 412                 } else {
 413                         set t $c
 414                 }
 415                 if {![catch {set summary $header($c,summary)}]} {
 416                         append t " $summary"
 417                         if {[string length $t] > 70} {
 418                                 set t [string range $t 0 66]...
 419                         }
 420                 }
 421
 422                 $m add command -label $t -command [cb _goback $i]
 423         }
 424         set X [winfo rootx $w_back]
 425         set Y [expr {[winfo rooty $w_back] + [winfo height $w_back]}]
 426         tk_popup $m $X $Y
 427 }
 428
 429 method _goback {i} {
 430         set dat [lindex $history $i]
 431         set history [lrange $history 0 [expr {$i - 1}]]
 432         set commit [lindex $dat 0]
 433         set path [lindex $dat 1]
 434         _load $this [lrange $dat 2 5]
 435 }
 436
 437 method _read_file {fd jump} {
 438         if {$fd ne $current_fd} {
 439                 catch {close $fd}
 440                 return
 441         }
 442
 443         foreach i $w_columns {$i conf -state normal}
 444         while {[gets $fd line] >= 0} {
 445                 regsub "\r\$" $line {} line
 446                 incr total_lines
 447                 lappend amov_data {}
 448                 lappend asim_data {}
 449
 450                 if {$total_lines > 1} {
 451                         foreach i $w_columns {$i insert end "\n"}
 452                 }
 453
 454                 $w_line insert end "$total_lines" linenumber
 455                 $w_file insert end "$line"
 456         }
 457
 458         set ln_wc [expr {[string length $total_lines] + 2}]
 459         if {[$w_line cget -width] < $ln_wc} {
 460                 $w_line conf -width $ln_wc
 461         }
 462
 463         foreach i $w_columns {$i conf -state disabled}
 464
 465         if {[eof $fd]} {
 466                 close $fd
 467
 468                 # If we don't force Tk to update the widgets *right now*
 469                 # none of our jump commands will cause a change in the UI.
 470                 #
 471                 update
 472
 473                 if {[llength $jump] == 1} {
 474                         set highlight_line [lindex $jump 0]
 475                         $w_file see "$highlight_line.0"
 476                 } elseif {[llength $jump] == 4} {
 477                         set highlight_column [lindex $jump 0]
 478                         set highlight_line [lindex $jump 1]
 479                         $w_file xview moveto [lindex $jump 2]
 480                         $w_file yview moveto [lindex $jump 3]
 481                 }
 482
 483                 _exec_blame $this $w_asim @asim_data \
 484                         [list] \
 485                         { copy/move tracking}
 486         }
 487 } ifdeleted { catch {close $fd} }
 488
 489 method _exec_blame {cur_w cur_d options cur_s} {
 490         set cmd [list]
 491         if {![is_Windows] || [is_Cygwin]} {
 492                 lappend cmd nice
 493         }
 494         lappend cmd git blame
 495         set cmd [concat $cmd $options]
 496         lappend cmd --incremental
 497         if {$commit eq {}} {
 498                 lappend cmd --contents $path
 499         } else {
 500                 lappend cmd $commit
 501         }
 502         lappend cmd -- $path
 503         set fd [open "| $cmd" r]
 504         fconfigure $fd -blocking 0 -translation lf -encoding binary
 505         fileevent $fd readable [cb _read_blame $fd $cur_w $cur_d $cur_s]
 506         set current_fd $fd
 507         set blame_lines 0
 508         _status $this $cur_s
 509 }
 510
 511 method _read_blame {fd cur_w cur_d cur_s} {
 512         upvar #0 $cur_d line_data
 513         variable group_colors
 514
 515         if {$fd ne $current_fd} {
 516                 catch {close $fd}
 517                 return
 518         }
 519
 520         $cur_w conf -state normal
 521         while {[gets $fd line] >= 0} {
 522                 if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
 523                         cmit original_line final_line line_count]} {
 524                         set r_commit     $cmit
 525                         set r_orig_line  $original_line
 526                         set r_final_line $final_line
 527                         set r_line_count $line_count
 528                 } elseif {[string match {filename *} $line]} {
 529                         set file [string range $line 9 end]
 530                         set n    $r_line_count
 531                         set lno  $r_final_line
 532                         set oln  $r_orig_line
 533                         set cmit $r_commit
 534
 535                         if {[regexp {^0{40}$} $cmit]} {
 536                                 set commit_abbr work
 537                                 set commit_type curr_commit
 538                         } elseif {$cmit eq $commit} {
 539                                 set commit_abbr this
 540                                 set commit_type curr_commit
 541                         } else {
 542                                 set commit_type prior_commit
 543                                 set commit_abbr [string range $cmit 0 3]
 544                         }
 545
 546                         set author_abbr {}
 547                         set a_name {}
 548                         catch {set a_name $header($cmit,author)}
 549                         while {$a_name ne {}} {
 550                                 if {![regexp {^([[:upper:]])} $a_name _a]} break
 551                                 append author_abbr $_a
 552                                 unset _a
 553                                 if {![regsub \
 554                                         {^[[:upper:]][^\s]*\s+} \
 555                                         $a_name {} a_name ]} break
 556                         }
 557                         if {$author_abbr eq {}} {
 558                                 set author_abbr { |}
 559                         } else {
 560                                 set author_abbr [string range $author_abbr 0 3]
 561                         }
 562                         unset a_name
 563
 564                         set first_lno $lno
 565                         while {
 566                            $first_lno > 1
 567                         && $cmit eq [lindex $line_data [expr {$first_lno - 1}] 0]
 568                         && $file eq [lindex $line_data [expr {$first_lno - 1}] 1]
 569                         } {
 570                                 incr first_lno -1
 571                         }
 572
 573                         set color {}
 574                         if {$first_lno < $lno} {
 575                                 foreach g [$w_file tag names $first_lno.0] {
 576                                         if {[regexp {^color[0-9]+$} $g]} {
 577                                                 set color $g
 578                                                 break
 579                                         }
 580                                 }
 581                         } else {
 582                                 set i [lsort [concat \
 583                                         [$w_file tag names "[expr {$first_lno - 1}].0"] \
 584                                         [$w_file tag names "[expr {$lno + $n}].0"] \
 585                                         ]]
 586                                 for {set g 0} {$g < [llength $group_colors]} {incr g} {
 587                                         if {[lsearch -sorted -exact $i color$g] == -1} {
 588                                                 set color color$g
 589                                                 break
 590                                         }
 591                                 }
 592                         }
 593                         if {$color eq {}} {
 594                                 set color color0
 595                         }
 596
 597                         while {$n > 0} {
 598                                 set lno_e "$lno.0 lineend + 1c"
 599                                 if {[lindex $line_data $lno] ne {}} {
 600                                         set g [lindex $line_data $lno 0]
 601                                         foreach i $w_columns {
 602                                                 $i tag remove g$g $lno.0 $lno_e
 603                                         }
 604                                 }
 605                                 lset line_data $lno [list $cmit $file $oln]
 606
 607                                 $cur_w delete $lno.0 "$lno.0 lineend"
 608                                 if {$lno == $first_lno} {
 609                                         $cur_w insert $lno.0 $commit_abbr $commit_type
 610                                 } elseif {$lno == [expr {$first_lno + 1}]} {
 611                                         $cur_w insert $lno.0 $author_abbr author_abbr
 612                                 } else {
 613                                         $cur_w insert $lno.0 { |}
 614                                 }
 615
 616                                 foreach i $w_columns {
 617                                         if {$cur_w eq $w_amov} {
 618                                                 for {set g 0} \
 619                                                         {$g < [llength $group_colors]} \
 620                                                         {incr g} {
 621                                                         $i tag remove color$g $lno.0 $lno_e
 622                                                 }
 623                                                 $i tag add $color $lno.0 $lno_e
 624                                         }
 625                                         $i tag add g$cmit $lno.0 $lno_e
 626                                 }
 627
 628                                 if {$highlight_column eq $cur_w} {
 629                                         if {$highlight_line == -1
 630                                          && [lindex [$w_file yview] 0] == 0} {
 631                                                 $w_file see $lno.0
 632                                                 set highlight_line $lno
 633                                         }
 634                                         if {$highlight_line == $lno} {
 635                                                 _showcommit $this $cur_w $lno
 636                                         }
 637                                 }
 638
 639                                 incr n -1
 640                                 incr lno
 641                                 incr oln
 642                                 incr blame_lines
 643                         }
 644
 645                         while {
 646                            $cmit eq [lindex $line_data $lno 0]
 647                         && $file eq [lindex $line_data $lno 1]
 648                         } {
 649                                 $cur_w delete $lno.0 "$lno.0 lineend"
 650
 651                                 if {$lno == $first_lno} {
 652                                         $cur_w insert $lno.0 $commit_abbr $commit_type
 653                                 } elseif {$lno == [expr {$first_lno + 1}]} {
 654                                         $cur_w insert $lno.0 $author_abbr author_abbr
 655                                 } else {
 656                                         $cur_w insert $lno.0 { |}
 657                                 }
 658
 659                                 if {$cur_w eq $w_amov} {
 660                                         foreach i $w_columns {
 661                                                 for {set g 0} \
 662                                                         {$g < [llength $group_colors]} \
 663                                                         {incr g} {
 664                                                         $i tag remove color$g $lno.0 $lno_e
 665                                                 }
 666                                                 $i tag add $color $lno.0 $lno_e
 667                                         }
 668                                 }
 669
 670                                 incr lno
 671                         }
 672
 673                 } elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
 674                         set header($r_commit,$key) $data
 675                 }
 676         }
 677         $cur_w conf -state disabled
 678
 679         if {[eof $fd]} {
 680                 close $fd
 681                 if {$cur_w eq $w_asim} {
 682                         _exec_blame $this $w_amov @amov_data \
 683                                 [list -M -C -C] \
 684                                 { original location}
 685                 } else {
 686                         set current_fd {}
 687                         set status {Annotation complete.}
 688                         destroy $w.status.c
 689                 }
 690         } else {
 691                 _status $this $cur_s
 692         }
 693 } ifdeleted { catch {close $fd} }
 694
 695 method _status {cur_s} {
 696         set have  $blame_lines
 697         set total $total_lines
 698         set pdone 0
 699         if {$total} {set pdone [expr {100 * $have / $total}]}
 700
 701         set status [format \
 702                 "Loading%s annotations... %i of %i lines annotated (%2i%%)" \
 703                 $cur_s $have $total $pdone]
 704         $w.status.c coords bar 0 0 $pdone 20
 705 }
 706
 707 method _click {cur_w pos} {
 708         set lno [lindex [split [$cur_w index $pos] .] 0]
 709         _showcommit $this $cur_w $lno
 710 }
 711
 712 method _load_commit {cur_w cur_d pos} {
 713         upvar #0 $cur_d line_data
 714         set lno [lindex [split [$cur_w index $pos] .] 0]
 715         set dat [lindex $line_data $lno]
 716         if {$dat ne {}} {
 717                 lappend history [list \
 718                         $commit $path \
 719                         $highlight_column \
 720                         $highlight_line \
 721                         [lindex [$w_file xview] 0] \
 722                         [lindex [$w_file yview] 0] \
 723                         ]
 724                 set commit [lindex $dat 0]
 725                 set path   [lindex $dat 1]
 726                 _load $this [list [lindex $dat 2]]
 727         }
 728 }
 729
 730 method _showcommit {cur_w lno} {
 731         global repo_config
 732         variable active_color
 733
 734         if {$highlight_commit ne {}} {
 735                 foreach i $w_columns {
 736                         $i tag conf g$highlight_commit -background {}
 737                         $i tag lower g$highlight_commit
 738                 }
 739         }
 740
 741         if {$cur_w eq $w_asim} {
 742                 set dat [lindex $asim_data $lno]
 743                 set highlight_column $w_asim
 744         } else {
 745                 set dat [lindex $amov_data $lno]
 746                 set highlight_column $w_amov
 747         }
 748
 749         $w_cviewer conf -state normal
 750         $w_cviewer delete 0.0 end
 751
 752         if {$dat eq {}} {
 753                 set cmit {}
 754                 $w_cviewer insert end "Loading annotation..." still_loading
 755         } else {
 756                 set cmit [lindex $dat 0]
 757                 set file [lindex $dat 1]
 758
 759                 foreach i $w_columns {
 760                         $i tag conf g$cmit -background $active_color
 761                         $i tag raise g$cmit
 762                 }
 763
 764                 set author_name {}
 765                 set author_email {}
 766                 set author_time {}
 767                 catch {set author_name $header($cmit,author)}
 768                 catch {set author_email $header($cmit,author-mail)}
 769                 catch {set author_time [clock format \
 770                         $header($cmit,author-time) \
 771                         -format {%Y-%m-%d %H:%M:%S}
 772                 ]}
 773
 774                 set committer_name {}
 775                 set committer_email {}
 776                 set committer_time {}
 777                 catch {set committer_name $header($cmit,committer)}
 778                 catch {set committer_email $header($cmit,committer-mail)}
 779                 catch {set committer_time [clock format \
 780                         $header($cmit,committer-time) \
 781                         -format {%Y-%m-%d %H:%M:%S}
 782                 ]}
 783
 784                 if {[catch {set msg $header($cmit,message)}]} {
 785                         set msg {}
 786                         catch {
 787                                 set fd [open "| git cat-file commit $cmit" r]
 788                                 fconfigure $fd -encoding binary -translation lf
 789                                 if {[catch {set enc $repo_config(i18n.commitencoding)}]} {
 790                                         set enc utf-8
 791                                 }
 792                                 while {[gets $fd line] > 0} {
 793                                         if {[string match {encoding *} $line]} {
 794                                                 set enc [string tolower [string range $line 9 end]]
 795                                         }
 796                                 }
 797                                 set msg [encoding convertfrom $enc [read $fd]]
 798                                 set msg [string trim $msg]
 799                                 close $fd
 800
 801                                 set author_name [encoding convertfrom $enc $author_name]
 802                                 set committer_name [encoding convertfrom $enc $committer_name]
 803
 804                                 set header($cmit,author) $author_name
 805                                 set header($cmit,committer) $committer_name
 806                         }
 807                         set header($cmit,message) $msg
 808                 }
 809
 810                 $w_cviewer insert end "commit $cmit\n" header_key
 811                 $w_cviewer insert end "Author:\t" header_key
 812                 $w_cviewer insert end "$author_name $author_email" header_val
 813                 $w_cviewer insert end "  $author_time\n" header_val
 814
 815                 $w_cviewer insert end "Committer:\t" header_key
 816                 $w_cviewer insert end "$committer_name $committer_email" header_val
 817                 $w_cviewer insert end "  $committer_time\n" header_val
 818
 819                 if {$file ne $path} {
 820                         $w_cviewer insert end "Original File:\t" header_key
 821                         $w_cviewer insert end "[escape_path $file]\n" header_val
 822                 }
 823
 824                 $w_cviewer insert end "\n$msg"
 825         }
 826         $w_cviewer conf -state disabled
 827
 828         set highlight_line $lno
 829         set highlight_commit $cmit
 830
 831         if {[lsearch -exact $tooltip_commit $highlight_commit] != -1} {
 832                 _hide_tooltip $this
 833         }
 834 }
 835
 836 method _copycommit {} {
 837         set pos @$::cursorX,$::cursorY
 838         set lno [lindex [split [$::cursorW index $pos] .] 0]
 839         set dat [lindex $amov_data $lno]
 840         if {$dat ne {}} {
 841                 clipboard clear
 842                 clipboard append \
 843                         -format STRING \
 844                         -type STRING \
 845                         -- [lindex $dat 0]
 846         }
 847 }
 848
 849 method _show_tooltip {cur_w pos} {
 850         if {$tooltip_wm ne {}} {
 851                 _open_tooltip $this $cur_w
 852         } elseif {$tooltip_timer eq {}} {
 853                 set tooltip_timer [after 1000 [cb _open_tooltip $cur_w]]
 854         }
 855 }
 856
 857 method _open_tooltip {cur_w} {
 858         set tooltip_timer {}
 859         set pos_x [winfo pointerx $cur_w]
 860         set pos_y [winfo pointery $cur_w]
 861         if {[winfo containing $pos_x $pos_y] ne $cur_w} {
 862                 _hide_tooltip $this
 863                 return
 864         }
 865
 866         if {$tooltip_wm ne "$cur_w.tooltip"} {
 867                 _hide_tooltip $this
 868
 869                 set tooltip_wm [toplevel $cur_w.tooltip -borderwidth 1]
 870                 wm overrideredirect $tooltip_wm 1
 871                 wm transient $tooltip_wm [winfo toplevel $cur_w]
 872                 set tooltip_t $tooltip_wm.label
 873                 text $tooltip_t \
 874                         -takefocus 0 \
 875                         -highlightthickness 0 \
 876                         -relief flat \
 877                         -borderwidth 0 \
 878                         -wrap none \
 879                         -background lightyellow \
 880                         -foreground black
 881                 $tooltip_t tag conf section_header -font font_uibold
 882                 pack $tooltip_t
 883         } else {
 884                 $tooltip_t conf -state normal
 885                 $tooltip_t delete 0.0 end
 886         }
 887
 888         set pos @[join [list \
 889                 [expr {$pos_x - [winfo rootx $cur_w]}] \
 890                 [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
 891         set lno [lindex [split [$cur_w index $pos] .] 0]
 892         if {$cur_w eq $w_amov} {
 893                 set dat [lindex $amov_data $lno]
 894                 set org {}
 895         } else {
 896                 set dat [lindex $asim_data $lno]
 897                 set org [lindex $amov_data $lno]
 898         }
 899
 900         set cmit [lindex $dat 0]
 901         set tooltip_commit [list $cmit]
 902
 903         set author_name {}
 904         set summary     {}
 905         set author_time {}
 906         catch {set author_name $header($cmit,author)}
 907         catch {set summary     $header($cmit,summary)}
 908         catch {set author_time [clock format \
 909                 $header($cmit,author-time) \
 910                 -format {%Y-%m-%d %H:%M:%S}
 911         ]}
 912
 913         $tooltip_t insert end "commit $cmit\n"
 914         $tooltip_t insert end "$author_name  $author_time\n"
 915         $tooltip_t insert end "$summary"
 916
 917         if {$org ne {} && [lindex $org 0] ne $cmit} {
 918                 set save [$tooltip_t get 0.0 end]
 919                 $tooltip_t delete 0.0 end
 920
 921                 set cmit [lindex $org 0]
 922                 set file [lindex $org 1]
 923                 lappend tooltip_commit $cmit
 924
 925                 set author_name {}
 926                 set summary     {}
 927                 set author_time {}
 928                 catch {set author_name $header($cmit,author)}
 929                 catch {set summary     $header($cmit,summary)}
 930                 catch {set author_time [clock format \
 931                         $header($cmit,author-time) \
 932                         -format {%Y-%m-%d %H:%M:%S}
 933                 ]}
 934
 935                 $tooltip_t insert end "Originally By:\n" section_header
 936                 $tooltip_t insert end "commit $cmit\n"
 937                 $tooltip_t insert end "$author_name  $author_time\n"
 938                 $tooltip_t insert end "$summary\n"
 939
 940                 if {$file ne $path} {
 941                         $tooltip_t insert end "In File: " section_header
 942                         $tooltip_t insert end "$file\n"
 943                 }
 944
 945                 $tooltip_t insert end "\n"
 946                 $tooltip_t insert end "Copied Or Moved Here By:\n" section_header
 947                 $tooltip_t insert end $save
 948         }
 949
 950         $tooltip_t conf -state disabled
 951         _position_tooltip $this
 952 }
 953
 954 method _position_tooltip {} {
 955         set max_h [lindex [split [$tooltip_t index end] .] 0]
 956         set max_w 0
 957         for {set i 1} {$i <= $max_h} {incr i} {
 958                 set c [lindex [split [$tooltip_t index "$i.0 lineend"] .] 1]
 959                 if {$c > $max_w} {set max_w $c}
 960         }
 961         $tooltip_t conf -width $max_w -height $max_h
 962
 963         set req_w [winfo reqwidth  $tooltip_t]
 964         set req_h [winfo reqheight $tooltip_t]
 965         set pos_x [expr {[winfo pointerx .] +  5}]
 966         set pos_y [expr {[winfo pointery .] + 10}]
 967
 968         set g "${req_w}x${req_h}"
 969         if {$pos_x >= 0} {append g +}
 970         append g $pos_x
 971         if {$pos_y >= 0} {append g +}
 972         append g $pos_y
 973
 974         wm geometry $tooltip_wm $g
 975         raise $tooltip_wm
 976 }
 977
 978 method _hide_tooltip {} {
 979         if {$tooltip_wm ne {}} {
 980                 destroy $tooltip_wm
 981                 set tooltip_wm {}
 982                 set tooltip_commit {}
 983         }
 984         if {$tooltip_timer ne {}} {
 985                 after cancel $tooltip_timer
 986                 set tooltip_timer {}
 987         }
 988 }
 989
 990 method _resize {new_height} {
 991         set diff [expr {$new_height - $old_height}]
 992         if {$diff == 0} return
 993
 994         set my [expr {[winfo height $w.file_pane] - 25}]
 995         set o [$w.file_pane sash coord 0]
 996         set ox [lindex $o 0]
 997         set oy [expr {[lindex $o 1] + $diff}]
 998         if {$oy < 0}   {set oy 0}
 999         if {$oy > $my} {set oy $my}
1000         $w.file_pane sash place 0 $ox $oy
1001
1002         set old_height $new_height
1003 }
1004
1005 }