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 {R0lGODlhGAAYAIUAAPwCBEzKXFTSZIz+nGzmhGzqfGTidIT+nEzGXHTqhGzmfGzifFzadETCVES+VARWDFzWbHzyjAReDGTadFTOZDSyRDyyTCymPARaFGTedFzSbDy2TCyqRCyqPARaDAyCHES6VDy6VCyiPAR6HCSeNByWLARyFARiDARqFGTifARiFAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACH5BAEAAAAALAAAAAAYABgAAAajQIBwSCwaj8ikcsk0BppJwRPqHEypQwHBis0WDAdEFyBIKBaMAKLBdjQeSkFBYTBAIvgEoS6JmhUTEwIUDQ4VFhcMGEhyCgoZExoUaxsWHB0THkgfAXUGAhoBDSAVFR0XBnCbDRmgog0hpSIiDJpJIyEQhBUcJCIlwA22SSYVogknEg8eD82qSigdDSknY0IqJQXPYxIl1dZCGNvWw+Dm510GQQAh/mhDcmVhdGVkIGJ5IEJNUFRvR0lGIFBybyB2ZXJzaW9uIDIuNQ0KqSBEZXZlbENvciAxOTk3LDE5OTguIEFsbCByaWdodHMgcmVzZXJ2ZWQuDQpodHRwOi8vd3d3LmRldmVsY29yLmNvbQA7}
   7
   8 # Persistant data (survives loads)
   9 #
  10 field history {}; # viewer history: {commit path}
  11 field header    ; # array commit,key -> header field
  12
  13 # Tk UI control paths
  14 #
  15 field w          ; # top window in this viewer
  16 field w_back     ; # our back button
  17 field w_path     ; # label showing the current file path
  18 field w_columns  ; # list of all column widgets in the viewer
  19 field w_line     ; # text column: all line numbers
  20 field w_amov     ; # text column: annotations + move tracking
  21 field w_asim     ; # text column: annotations (simple computation)
  22 field w_file     ; # text column: actual file data
  23 field w_cviewer  ; # pane showing commit message
  24 field finder     ; # find mini-dialog frame
  25 field status     ; # status mega-widget instance
  26 field old_height ; # last known height of $w.file_pane
  27
  28
  29 # Tk UI colors
  30 #
  31 variable active_color #c0edc5
  32 variable group_colors {
  33         #d6d6d6
  34         #e1e1e1
  35         #ececec
  36 }
  37
  38 # Current blame data; cleared/reset on each load
  39 #
  40 field commit               ; # input commit to blame
  41 field path                 ; # input filename to view in $commit
  42
  43 field current_fd        {} ; # background process running
  44 field highlight_line    -1 ; # current line selected
  45 field highlight_column  {} ; # current commit column selected
  46 field highlight_commit  {} ; # sha1 of commit selected
  47
  48 field total_lines       0  ; # total length of file
  49 field blame_lines       0  ; # number of lines computed
  50 field amov_data            ; # list of {commit origfile origline}
  51 field asim_data            ; # list of {commit origfile origline}
  52
  53 field r_commit             ; # commit currently being parsed
  54 field r_orig_line          ; # original line number
  55 field r_final_line         ; # final line number
  56 field r_line_count         ; # lines in this region
  57
  58 field tooltip_wm        {} ; # Current tooltip toplevel, if open
  59 field tooltip_t         {} ; # Text widget in $tooltip_wm
  60 field tooltip_timer     {} ; # Current timer event for our tooltip
  61 field tooltip_commit    {} ; # Commit(s) in tooltip
  62
  63 constructor new {i_commit i_path i_jump} {
  64         global cursor_ptr M1B M1T have_tk85 use_ttk NS
  65         variable active_color
  66         variable group_colors
  67
  68         set commit $i_commit
  69         set path   $i_path
  70
  71         make_toplevel top w
  72         wm title $top [append "[appname] ([reponame]): " [mc "File Viewer"]]
  73
  74         set font_w [font measure font_diff "0"]
  75
  76         gold_frame $w.header
  77         tlabel $w.header.commit_l \
  78                 -text [mc "Commit:"] \
  79                 -background gold \
  80                 -foreground black \
  81                 -anchor w \
  82                 -justify left
  83         set w_back $w.header.commit_b
  84         tlabel $w_back \
  85                 -image ::blame::img_back_arrow \
  86                 -borderwidth 0 \
  87                 -relief flat \
  88                 -state disabled \
  89                 -background gold \
  90                 -foreground black \
  91                 -activebackground gold
  92         bind $w_back <Button-1> "
  93                 if {\[$w_back cget -state\] eq {normal}} {
  94                         [cb _history_menu]
  95                 }
  96                 "
  97         tlabel $w.header.commit \
  98                 -textvariable @commit \
  99                 -background gold \
 100                 -foreground black \
 101                 -anchor w \
 102                 -justify left
 103         tlabel $w.header.path_l \
 104                 -text [mc "File:"] \
 105                 -background gold \
 106                 -foreground black \
 107                 -anchor w \
 108                 -justify left
 109         set w_path $w.header.path
 110         tlabel $w_path \
 111                 -background gold \
 112                 -foreground black \
 113                 -anchor w \
 114                 -justify left
 115         pack $w.header.commit_l -side left
 116         pack $w_back -side left
 117         pack $w.header.commit -side left
 118         pack $w_path -fill x -side right
 119         pack $w.header.path_l -side right
 120
 121         panedwindow $w.file_pane -orient vertical -borderwidth 0 -sashwidth 3
 122         frame $w.file_pane.out -relief flat -borderwidth 1
 123         frame $w.file_pane.cm -relief sunken -borderwidth 1
 124         $w.file_pane add $w.file_pane.out \
 125                 -sticky nsew \
 126                 -minsize 100 \
 127                 -height 100 \
 128                 -width 100
 129         $w.file_pane add $w.file_pane.cm \
 130                 -sticky nsew \
 131                 -minsize 25 \
 132                 -height 25 \
 133                 -width 100
 134
 135         set w_line $w.file_pane.out.linenumber_t
 136         text $w_line \
 137                 -takefocus 0 \
 138                 -highlightthickness 0 \
 139                 -padx 0 -pady 0 \
 140                 -background white \
 141                 -foreground black \
 142                 -borderwidth 0 \
 143                 -state disabled \
 144                 -wrap none \
 145                 -height 40 \
 146                 -width 6 \
 147                 -font font_diff
 148         $w_line tag conf linenumber -justify right -rmargin 5
 149
 150         set w_amov $w.file_pane.out.amove_t
 151         text $w_amov \
 152                 -takefocus 0 \
 153                 -highlightthickness 0 \
 154                 -padx 0 -pady 0 \
 155                 -background white \
 156                 -foreground black \
 157                 -borderwidth 0 \
 158                 -state disabled \
 159                 -wrap none \
 160                 -height 40 \
 161                 -width 5 \
 162                 -font font_diff
 163         $w_amov tag conf author_abbr -justify right -rmargin 5
 164         $w_amov tag conf curr_commit
 165         $w_amov tag conf prior_commit -foreground blue -underline 1
 166         $w_amov tag bind prior_commit \
 167                 <Button-1> \
 168                 "[cb _load_commit $w_amov @amov_data @%x,%y];break"
 169
 170         set w_asim $w.file_pane.out.asimple_t
 171         text $w_asim \
 172                 -takefocus 0 \
 173                 -highlightthickness 0 \
 174                 -padx 0 -pady 0 \
 175                 -background white \
 176                 -foreground black \
 177                 -borderwidth 0 \
 178                 -state disabled \
 179                 -wrap none \
 180                 -height 40 \
 181                 -width 4 \
 182                 -font font_diff
 183         $w_asim tag conf author_abbr -justify right
 184         $w_asim tag conf curr_commit
 185         $w_asim tag conf prior_commit -foreground blue -underline 1
 186         $w_asim tag bind prior_commit \
 187                 <Button-1> \
 188                 "[cb _load_commit $w_asim @asim_data @%x,%y];break"
 189
 190         set w_file $w.file_pane.out.file_t
 191         text $w_file \
 192                 -takefocus 0 \
 193                 -highlightthickness 0 \
 194                 -padx 0 -pady 0 \
 195                 -background white \
 196                 -foreground black \
 197                 -borderwidth 0 \
 198                 -state disabled \
 199                 -wrap none \
 200                 -height 40 \
 201                 -width 80 \
 202                 -xscrollcommand [list $w.file_pane.out.sbx set] \
 203                 -font font_diff
 204         if {$have_tk85} {
 205                 $w_file configure -inactiveselectbackground darkblue
 206         }
 207         $w_file tag conf found \
 208                 -background yellow
 209
 210         set w_columns [list $w_amov $w_asim $w_line $w_file]
 211
 212         ${NS}::scrollbar $w.file_pane.out.sbx \
 213                 -orient h \
 214                 -command [list $w_file xview]
 215         ${NS}::scrollbar $w.file_pane.out.sby \
 216                 -orient v \
 217                 -command [list scrollbar2many $w_columns yview]
 218         eval grid $w_columns $w.file_pane.out.sby -sticky nsew
 219         grid conf \
 220                 $w.file_pane.out.sbx \
 221                 -column [expr {[llength $w_columns] - 1}] \
 222                 -sticky we
 223         grid columnconfigure \
 224                 $w.file_pane.out \
 225                 [expr {[llength $w_columns] - 1}] \
 226                 -weight 1
 227         grid rowconfigure $w.file_pane.out 0 -weight 1
 228
 229         set finder [::searchbar::new \
 230                 $w.file_pane.out.ff $w_file \
 231                 -column [expr {[llength $w_columns] - 1}] \
 232                 ]
 233
 234         set w_cviewer $w.file_pane.cm.t
 235         text $w_cviewer \
 236                 -background white \
 237                 -foreground black \
 238                 -borderwidth 0 \
 239                 -state disabled \
 240                 -wrap none \
 241                 -height 10 \
 242                 -width 80 \
 243                 -xscrollcommand [list $w.file_pane.cm.sbx set] \
 244                 -yscrollcommand [list $w.file_pane.cm.sby set] \
 245                 -font font_diff
 246         $w_cviewer tag conf still_loading \
 247                 -font font_uiitalic \
 248                 -justify center
 249         $w_cviewer tag conf header_key \
 250                 -tabs {3c} \
 251                 -background $active_color \
 252                 -font font_uibold
 253         $w_cviewer tag conf header_val \
 254                 -background $active_color \
 255                 -font font_ui
 256         $w_cviewer tag raise sel
 257         ${NS}::scrollbar $w.file_pane.cm.sbx \
 258                 -orient h \
 259                 -command [list $w_cviewer xview]
 260         ${NS}::scrollbar $w.file_pane.cm.sby \
 261                 -orient v \
 262                 -command [list $w_cviewer yview]
 263         pack $w.file_pane.cm.sby -side right -fill y
 264         pack $w.file_pane.cm.sbx -side bottom -fill x
 265         pack $w_cviewer -expand 1 -fill both
 266
 267         set status [::status_bar::new $w.status]
 268
 269         menu $w.ctxm -tearoff 0
 270         $w.ctxm add command \
 271                 -label [mc "Copy Commit"] \
 272                 -command [cb _copycommit]
 273         $w.ctxm add separator
 274         $w.ctxm add command \
 275                 -label [mc "Find Text..."] \
 276                 -accelerator F7 \
 277                 -command [list searchbar::show $finder]
 278         menu $w.ctxm.enc
 279         build_encoding_menu $w.ctxm.enc [cb _setencoding]
 280         $w.ctxm add cascade \
 281                 -label [mc "Encoding"] \
 282                 -menu $w.ctxm.enc
 283         $w.ctxm add command \
 284                 -label [mc "Do Full Copy Detection"] \
 285                 -command [cb _fullcopyblame]
 286         $w.ctxm add separator
 287         $w.ctxm add command \
 288                 -label [mc "Show History Context"] \
 289                 -command [cb _gitkcommit]
 290         $w.ctxm add command \
 291                 -label [mc "Blame Parent Commit"] \
 292                 -command [cb _blameparent]
 293
 294         foreach i $w_columns {
 295                 for {set g 0} {$g < [llength $group_colors]} {incr g} {
 296                         $i tag conf color$g -background [lindex $group_colors $g]
 297                 }
 298
 299                 if {$i eq $w_file} {
 300                         $w_file tag raise found
 301                 }
 302                 $i tag raise sel
 303
 304                 $i conf -cursor $cursor_ptr
 305                 $i conf -yscrollcommand \
 306                         "[list ::searchbar::scrolled $finder]
 307                          [list many2scrollbar $w_columns yview $w.file_pane.out.sby]"
 308                 bind $i <Button-1> "
 309                         [cb _hide_tooltip]
 310                         [cb _click $i @%x,%y]
 311                         focus $i
 312                 "
 313                 bind $i <Any-Motion>  [cb _show_tooltip $i @%x,%y]
 314                 bind $i <Any-Enter>   [cb _hide_tooltip]
 315                 bind $i <Any-Leave>   [cb _hide_tooltip]
 316                 bind_button3 $i "
 317                         [cb _hide_tooltip]
 318                         set cursorX %x
 319                         set cursorY %y
 320                         set cursorW %W
 321                         tk_popup $w.ctxm %X %Y
 322                 "
 323                 bind $i <Shift-Tab> "[list focus $w_cviewer];break"
 324                 bind $i <Tab>       "[cb _focus_search $w_cviewer];break"
 325         }
 326
 327         foreach i [concat $w_columns $w_cviewer] {
 328                 bind $i <Key-Up>        {catch {%W yview scroll -1 units};break}
 329                 bind $i <Key-Down>      {catch {%W yview scroll  1 units};break}
 330                 bind $i <Key-Left>      {catch {%W xview scroll -1 units};break}
 331                 bind $i <Key-Right>     {catch {%W xview scroll  1 units};break}
 332                 bind $i <Key-k>         {catch {%W yview scroll -1 units};break}
 333                 bind $i <Key-j>         {catch {%W yview scroll  1 units};break}
 334                 bind $i <Key-h>         {catch {%W xview scroll -1 units};break}
 335                 bind $i <Key-l>         {catch {%W xview scroll  1 units};break}
 336                 bind $i <Control-Key-b> {catch {%W yview scroll -1 pages};break}
 337                 bind $i <Control-Key-f> {catch {%W yview scroll  1 pages};break}
 338         }
 339
 340         bind $w_cviewer <Shift-Tab> "[cb _focus_search $w_file];break"
 341         bind $w_cviewer <Tab>       "[list focus $w_file];break"
 342         bind $w_cviewer <Button-1>   [list focus $w_cviewer]
 343         bind $w_file    <Visibility> [cb _focus_search $w_file]
 344         bind $top       <F7>         [list searchbar::show $finder]
 345         bind $top       <Escape>     [list searchbar::hide $finder]
 346         bind $top       <F3>         [list searchbar::find_next $finder]
 347         bind $top       <Shift-F3>   [list searchbar::find_prev $finder]
 348         catch { bind $top <Shift-Key-XF86_Switch_VT_3> [list searchbar::find_prev $finder] }
 349
 350         grid configure $w.header -sticky ew
 351         grid configure $w.file_pane -sticky nsew
 352         grid configure $w.status -sticky ew
 353         grid columnconfigure $top 0 -weight 1
 354         grid rowconfigure $top 0 -weight 0
 355         grid rowconfigure $top 1 -weight 1
 356         grid rowconfigure $top 2 -weight 0
 357
 358         set req_w [winfo reqwidth  $top]
 359         set req_h [winfo reqheight $top]
 360         set scr_w [expr {[winfo screenwidth $top] - 40}]
 361         set scr_h [expr {[winfo screenheight $top] - 120}]
 362         set opt_w [expr {$font_w * (80 + 5*3 + 3)}]
 363         if {$req_w < $opt_w} {set req_w $opt_w}
 364         if {$req_w > $scr_w} {set req_w $scr_w}
 365         set opt_h [expr {$req_w*4/3}]
 366         if {$req_h < $scr_h} {set req_h $scr_h}
 367         if {$req_h > $opt_h} {set req_h $opt_h}
 368         set g "${req_w}x${req_h}"
 369         wm geometry $top $g
 370         update
 371
 372         set old_height [winfo height $w.file_pane]
 373         $w.file_pane sash place 0 \
 374                 [lindex [$w.file_pane sash coord 0] 0] \
 375                 [expr {int($old_height * 0.80)}]
 376         bind $w.file_pane <Configure> \
 377         "if {{$w.file_pane} eq {%W}} {[cb _resize %h]}"
 378
 379         wm protocol $top WM_DELETE_WINDOW "destroy $top"
 380         bind $top <Destroy> [cb _handle_destroy %W]
 381
 382         _load $this $i_jump
 383 }
 384
 385 method _focus_search {win} {
 386         if {[searchbar::visible $finder]} {
 387                 focus [searchbar::editor $finder]
 388         } else {
 389                 focus $win
 390         }
 391 }
 392
 393 method _handle_destroy {win} {
 394         if {$win eq $w} {
 395                 _kill $this
 396                 delete_this
 397         }
 398 }
 399
 400 method _kill {} {
 401         if {$current_fd ne {}} {
 402                 kill_file_process $current_fd
 403                 catch {close $current_fd}
 404                 set current_fd {}
 405         }
 406 }
 407
 408 method _load {jump} {
 409         variable group_colors
 410
 411         _hide_tooltip $this
 412
 413         if {$total_lines != 0 || $current_fd ne {}} {
 414                 _kill $this
 415
 416                 foreach i $w_columns {
 417                         $i conf -state normal
 418                         $i delete 0.0 end
 419                         foreach g [$i tag names] {
 420                                 if {[regexp {^g[0-9a-f]{40}$} $g]} {
 421                                         $i tag delete $g
 422                                 }
 423                         }
 424                         $i conf -state disabled
 425                 }
 426
 427                 $w_cviewer conf -state normal
 428                 $w_cviewer delete 0.0 end
 429                 $w_cviewer conf -state disabled
 430
 431                 set highlight_line -1
 432                 set highlight_column {}
 433                 set highlight_commit {}
 434                 set total_lines 0
 435         }
 436
 437         if {$history eq {}} {
 438                 $w_back conf -state disabled
 439         } else {
 440                 $w_back conf -state normal
 441         }
 442
 443         # Index 0 is always empty.  There is never line 0 as
 444         # we use only 1 based lines, as that matches both with
 445         # git-blame output and with Tk's text widget.
 446         #
 447         set amov_data [list [list]]
 448         set asim_data [list [list]]
 449
 450         $status show [mc "Reading %s..." "$commit:[escape_path $path]"]
 451         $w_path conf -text [escape_path $path]
 452
 453         set do_textconv 0
 454         if {![is_config_false gui.textconv] && [git-version >= 1.7.2]} {
 455                 set filter [gitattr $path diff set]
 456                 set textconv [get_config [join [list diff $filter textconv] .]]
 457                 if {$filter ne {set} && $textconv ne {}} {
 458                         set do_textconv 1
 459                 }
 460         }
 461         if {$commit eq {}} {
 462                 if {$do_textconv ne 0} {
 463                         # Run textconv with sh -c "..." to allow it to
 464                         # contain command + arguments. On windows, just
 465                         # call the filter command.
 466                         if {![file executable [shellpath]]} {
 467                                 set fd [open |[linsert $textconv end $path] r]
 468                         } else {
 469                                 set fd [open |[list [shellpath] -c "$textconv \"\$0\"" $path] r]
 470                         }
 471                 } else {
 472                         set fd [open $path r]
 473                 }
 474                 fconfigure $fd -eofchar {}
 475         } else {
 476                 if {$do_textconv ne 0} {
 477                         set fd [git_read cat-file --textconv "$commit:$path"]
 478                 } else {
 479                         set fd [git_read cat-file blob "$commit:$path"]
 480                 }
 481         }
 482         fconfigure $fd \
 483                 -blocking 0 \
 484                 -translation lf \
 485                 -encoding [get_path_encoding $path]
 486         fileevent $fd readable [cb _read_file $fd $jump]
 487         set current_fd $fd
 488 }
 489
 490 method _history_menu {} {
 491         set m $w.backmenu
 492         if {[winfo exists $m]} {
 493                 $m delete 0 end
 494         } else {
 495                 menu $m -tearoff 0
 496         }
 497
 498         for {set i [expr {[llength $history] - 1}]
 499                 } {$i >= 0} {incr i -1} {
 500                 set e [lindex $history $i]
 501                 set c [lindex $e 0]
 502                 set f [lindex $e 1]
 503
 504                 if {[regexp {^[0-9a-f]{40}$} $c]} {
 505                         set t [string range $c 0 8]...
 506                 } elseif {$c eq {}} {
 507                         set t {Working Directory}
 508                 } else {
 509                         set t $c
 510                 }
 511                 if {![catch {set summary $header($c,summary)}]} {
 512                         append t " $summary"
 513                         if {[string length $t] > 70} {
 514                                 set t [string range $t 0 66]...
 515                         }
 516                 }
 517
 518                 $m add command -label $t -command [cb _goback $i]
 519         }
 520         set X [winfo rootx $w_back]
 521         set Y [expr {[winfo rooty $w_back] + [winfo height $w_back]}]
 522         tk_popup $m $X $Y
 523 }
 524
 525 method _goback {i} {
 526         set dat [lindex $history $i]
 527         set history [lrange $history 0 [expr {$i - 1}]]
 528         set commit [lindex $dat 0]
 529         set path [lindex $dat 1]
 530         _load $this [lrange $dat 2 5]
 531 }
 532
 533 method _read_file {fd jump} {
 534         if {$fd ne $current_fd} {
 535                 catch {close $fd}
 536                 return
 537         }
 538
 539         foreach i $w_columns {$i conf -state normal}
 540         while {[gets $fd line] >= 0} {
 541                 regsub "\r\$" $line {} line
 542                 incr total_lines
 543                 lappend amov_data {}
 544                 lappend asim_data {}
 545
 546                 if {$total_lines > 1} {
 547                         foreach i $w_columns {$i insert end "\n"}
 548                 }
 549
 550                 $w_line insert end "$total_lines" linenumber
 551                 $w_file insert end "$line"
 552         }
 553
 554         set ln_wc [expr {[string length $total_lines] + 2}]
 555         if {[$w_line cget -width] < $ln_wc} {
 556                 $w_line conf -width $ln_wc
 557         }
 558
 559         foreach i $w_columns {$i conf -state disabled}
 560
 561         if {[eof $fd]} {
 562                 close $fd
 563
 564                 # If we don't force Tk to update the widgets *right now*
 565                 # none of our jump commands will cause a change in the UI.
 566                 #
 567                 update
 568
 569                 if {[llength $jump] == 1} {
 570                         set highlight_line [lindex $jump 0]
 571                         $w_file see "$highlight_line.0"
 572                 } elseif {[llength $jump] == 4} {
 573                         set highlight_column [lindex $jump 0]
 574                         set highlight_line [lindex $jump 1]
 575                         $w_file xview moveto [lindex $jump 2]
 576                         $w_file yview moveto [lindex $jump 3]
 577                 }
 578
 579                 _exec_blame $this $w_asim @asim_data \
 580                         [list] \
 581                         [mc "Loading copy/move tracking annotations..."]
 582         }
 583 } ifdeleted { catch {close $fd} }
 584
 585 method _exec_blame {cur_w cur_d options cur_s} {
 586         lappend options --incremental --encoding=utf-8
 587         if {$commit eq {}} {
 588                 lappend options --contents $path
 589         } else {
 590                 lappend options $commit
 591         }
 592         lappend options -- $path
 593         set fd [eval git_read --nice blame $options]
 594         fconfigure $fd -blocking 0 -translation lf -encoding utf-8
 595         fileevent $fd readable [cb _read_blame $fd $cur_w $cur_d]
 596         set current_fd $fd
 597         set blame_lines 0
 598
 599         $status start \
 600                 $cur_s \
 601                 [mc "lines annotated"]
 602 }
 603
 604 method _read_blame {fd cur_w cur_d} {
 605         upvar #0 $cur_d line_data
 606         variable group_colors
 607
 608         if {$fd ne $current_fd} {
 609                 catch {close $fd}
 610                 return
 611         }
 612
 613         $cur_w conf -state normal
 614         while {[gets $fd line] >= 0} {
 615                 if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
 616                         cmit original_line final_line line_count]} {
 617                         set r_commit     $cmit
 618                         set r_orig_line  $original_line
 619                         set r_final_line $final_line
 620                         set r_line_count $line_count
 621                 } elseif {[string match {filename *} $line]} {
 622                         set file [string range $line 9 end]
 623                         set n    $r_line_count
 624                         set lno  $r_final_line
 625                         set oln  $r_orig_line
 626                         set cmit $r_commit
 627
 628                         if {[regexp {^0{40}$} $cmit]} {
 629                                 set commit_abbr work
 630                                 set commit_type curr_commit
 631                         } elseif {$cmit eq $commit} {
 632                                 set commit_abbr this
 633                                 set commit_type curr_commit
 634                         } else {
 635                                 set commit_type prior_commit
 636                                 set commit_abbr [string range $cmit 0 3]
 637                         }
 638
 639                         set author_abbr {}
 640                         set a_name {}
 641                         catch {set a_name $header($cmit,author)}
 642                         while {$a_name ne {}} {
 643                                 if {$author_abbr ne {}
 644                                         && [string index $a_name 0] eq {'}} {
 645                                         regsub {^'[^']+'\s+} $a_name {} a_name
 646                                 }
 647                                 if {![regexp {^([[:upper:]])} $a_name _a]} break
 648                                 append author_abbr $_a
 649                                 unset _a
 650                                 if {![regsub \
 651                                         {^[[:upper:]][^\s]*\s+} \
 652                                         $a_name {} a_name ]} break
 653                         }
 654                         if {$author_abbr eq {}} {
 655                                 set author_abbr { |}
 656                         } else {
 657                                 set author_abbr [string range $author_abbr 0 3]
 658                         }
 659                         unset a_name
 660
 661                         set first_lno $lno
 662                         while {
 663                            $first_lno > 1
 664                         && $cmit eq [lindex $line_data [expr {$first_lno - 1}] 0]
 665                         && $file eq [lindex $line_data [expr {$first_lno - 1}] 1]
 666                         } {
 667                                 incr first_lno -1
 668                         }
 669
 670                         set color {}
 671                         if {$first_lno < $lno} {
 672                                 foreach g [$w_file tag names $first_lno.0] {
 673                                         if {[regexp {^color[0-9]+$} $g]} {
 674                                                 set color $g
 675                                                 break
 676                                         }
 677                                 }
 678                         } else {
 679                                 set i [lsort [concat \
 680                                         [$w_file tag names "[expr {$first_lno - 1}].0"] \
 681                                         [$w_file tag names "[expr {$lno + $n}].0"] \
 682                                         ]]
 683                                 for {set g 0} {$g < [llength $group_colors]} {incr g} {
 684                                         if {[lsearch -sorted -exact $i color$g] == -1} {
 685                                                 set color color$g
 686                                                 break
 687                                         }
 688                                 }
 689                         }
 690                         if {$color eq {}} {
 691                                 set color color0
 692                         }
 693
 694                         while {$n > 0} {
 695                                 set lno_e "$lno.0 lineend + 1c"
 696                                 if {[lindex $line_data $lno] ne {}} {
 697                                         set g [lindex $line_data $lno 0]
 698                                         foreach i $w_columns {
 699                                                 $i tag remove g$g $lno.0 $lno_e
 700                                         }
 701                                 }
 702                                 lset line_data $lno [list $cmit $file $oln]
 703
 704                                 $cur_w delete $lno.0 "$lno.0 lineend"
 705                                 if {$lno == $first_lno} {
 706                                         $cur_w insert $lno.0 $commit_abbr $commit_type
 707                                 } elseif {$lno == [expr {$first_lno + 1}]} {
 708                                         $cur_w insert $lno.0 $author_abbr author_abbr
 709                                 } else {
 710                                         $cur_w insert $lno.0 { |}
 711                                 }
 712
 713                                 foreach i $w_columns {
 714                                         if {$cur_w eq $w_amov} {
 715                                                 for {set g 0} \
 716                                                         {$g < [llength $group_colors]} \
 717                                                         {incr g} {
 718                                                         $i tag remove color$g $lno.0 $lno_e
 719                                                 }
 720                                                 $i tag add $color $lno.0 $lno_e
 721                                         }
 722                                         $i tag add g$cmit $lno.0 $lno_e
 723                                 }
 724
 725                                 if {$highlight_column eq $cur_w} {
 726                                         if {$highlight_line == -1
 727                                          && [lindex [$w_file yview] 0] == 0} {
 728                                                 $w_file see $lno.0
 729                                                 set highlight_line $lno
 730                                         }
 731                                         if {$highlight_line == $lno} {
 732                                                 _showcommit $this $cur_w $lno
 733                                         }
 734                                 }
 735
 736                                 incr n -1
 737                                 incr lno
 738                                 incr oln
 739                                 incr blame_lines
 740                         }
 741
 742                         while {
 743                            $cmit eq [lindex $line_data $lno 0]
 744                         && $file eq [lindex $line_data $lno 1]
 745                         } {
 746                                 $cur_w delete $lno.0 "$lno.0 lineend"
 747
 748                                 if {$lno == $first_lno} {
 749                                         $cur_w insert $lno.0 $commit_abbr $commit_type
 750                                 } elseif {$lno == [expr {$first_lno + 1}]} {
 751                                         $cur_w insert $lno.0 $author_abbr author_abbr
 752                                 } else {
 753                                         $cur_w insert $lno.0 { |}
 754                                 }
 755
 756                                 if {$cur_w eq $w_amov} {
 757                                         foreach i $w_columns {
 758                                                 for {set g 0} \
 759                                                         {$g < [llength $group_colors]} \
 760                                                         {incr g} {
 761                                                         $i tag remove color$g $lno.0 $lno_e
 762                                                 }
 763                                                 $i tag add $color $lno.0 $lno_e
 764                                         }
 765                                 }
 766
 767                                 incr lno
 768                         }
 769
 770                 } elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
 771                         set header($r_commit,$key) $data
 772                 }
 773         }
 774         $cur_w conf -state disabled
 775
 776         if {[eof $fd]} {
 777                 close $fd
 778                 if {$cur_w eq $w_asim} {
 779                         # Switches for original location detection
 780                         set threshold [get_config gui.copyblamethreshold]
 781                         set original_options [list "-C$threshold"]
 782
 783                         if {![is_config_true gui.fastcopyblame]} {
 784                                 # thorough copy search; insert before the threshold
 785                                 set original_options [linsert $original_options 0 -C]
 786                         }
 787                         if {[git-version >= 1.5.3]} {
 788                                 lappend original_options -w ; # ignore indentation changes
 789                         }
 790
 791                         _exec_blame $this $w_amov @amov_data \
 792                                 $original_options \
 793                                 [mc "Loading original location annotations..."]
 794                 } else {
 795                         set current_fd {}
 796                         $status stop [mc "Annotation complete."]
 797                 }
 798         } else {
 799                 $status update $blame_lines $total_lines
 800         }
 801 } ifdeleted { catch {close $fd} }
 802
 803 method _find_commit_bound {data_list start_idx delta} {
 804         upvar #0 $data_list line_data
 805         set pos $start_idx
 806         set limit       [expr {[llength $line_data] - 1}]
 807         set base_commit [lindex $line_data $pos 0]
 808
 809         while {$pos > 0 && $pos < $limit} {
 810                 set new_pos [expr {$pos + $delta}]
 811                 if {[lindex $line_data $new_pos 0] ne $base_commit} {
 812                         return $pos
 813                 }
 814
 815                 set pos $new_pos
 816         }
 817
 818         return $pos
 819 }
 820
 821 method _fullcopyblame {} {
 822         if {$current_fd ne {}} {
 823                 tk_messageBox \
 824                         -icon error \
 825                         -type ok \
 826                         -title [mc "Busy"] \
 827                         -message [mc "Annotation process is already running."]
 828
 829                 return
 830         }
 831
 832         # Switches for original location detection
 833         set threshold [get_config gui.copyblamethreshold]
 834         set original_options [list -C -C "-C$threshold"]
 835
 836         if {[git-version >= 1.5.3]} {
 837                 lappend original_options -w ; # ignore indentation changes
 838         }
 839
 840         # Find the line range
 841         set pos @$::cursorX,$::cursorY
 842         set lno [lindex [split [$::cursorW index $pos] .] 0]
 843         set min_amov_lno [_find_commit_bound $this @amov_data $lno -1]
 844         set max_amov_lno [_find_commit_bound $this @amov_data $lno 1]
 845         set min_asim_lno [_find_commit_bound $this @asim_data $lno -1]
 846         set max_asim_lno [_find_commit_bound $this @asim_data $lno 1]
 847
 848         if {$min_asim_lno < $min_amov_lno} {
 849                 set min_amov_lno $min_asim_lno
 850         }
 851
 852         if {$max_asim_lno > $max_amov_lno} {
 853                 set max_amov_lno $max_asim_lno
 854         }
 855
 856         lappend original_options -L "$min_amov_lno,$max_amov_lno"
 857
 858         # Clear lines
 859         for {set i $min_amov_lno} {$i <= $max_amov_lno} {incr i} {
 860                 lset amov_data $i [list ]
 861         }
 862
 863         # Start the back-end process
 864         _exec_blame $this $w_amov @amov_data \
 865                 $original_options \
 866                 [mc "Running thorough copy detection..."]
 867 }
 868
 869 method _click {cur_w pos} {
 870         set lno [lindex [split [$cur_w index $pos] .] 0]
 871         _showcommit $this $cur_w $lno
 872 }
 873
 874 method _setencoding {enc} {
 875         force_path_encoding $path $enc
 876         _load $this [list \
 877                 $highlight_column \
 878                 $highlight_line \
 879                 [lindex [$w_file xview] 0] \
 880                 [lindex [$w_file yview] 0] \
 881                 ]
 882 }
 883
 884 method _load_commit {cur_w cur_d pos} {
 885         upvar #0 $cur_d line_data
 886         set lno [lindex [split [$cur_w index $pos] .] 0]
 887         set dat [lindex $line_data $lno]
 888         if {$dat ne {}} {
 889                 _load_new_commit $this  \
 890                         [lindex $dat 0] \
 891                         [lindex $dat 1] \
 892                         [list [lindex $dat 2]]
 893         }
 894 }
 895
 896 method _load_new_commit {new_commit new_path jump} {
 897         lappend history [list \
 898                 $commit $path \
 899                 $highlight_column \
 900                 $highlight_line \
 901                 [lindex [$w_file xview] 0] \
 902                 [lindex [$w_file yview] 0] \
 903                 ]
 904
 905         set commit $new_commit
 906         set path   $new_path
 907         _load $this $jump
 908 }
 909
 910 method _showcommit {cur_w lno} {
 911         global repo_config
 912         variable active_color
 913
 914         if {$highlight_commit ne {}} {
 915                 foreach i $w_columns {
 916                         $i tag conf g$highlight_commit -background {}
 917                         $i tag lower g$highlight_commit
 918                 }
 919         }
 920
 921         if {$cur_w eq $w_asim} {
 922                 set dat [lindex $asim_data $lno]
 923                 set highlight_column $w_asim
 924         } else {
 925                 set dat [lindex $amov_data $lno]
 926                 set highlight_column $w_amov
 927         }
 928
 929         $w_cviewer conf -state normal
 930         $w_cviewer delete 0.0 end
 931
 932         if {$dat eq {}} {
 933                 set cmit {}
 934                 $w_cviewer insert end [mc "Loading annotation..."] still_loading
 935         } else {
 936                 set cmit [lindex $dat 0]
 937                 set file [lindex $dat 1]
 938
 939                 foreach i $w_columns {
 940                         $i tag conf g$cmit -background $active_color
 941                         $i tag raise g$cmit
 942                         if {$i eq $w_file} {
 943                                 $w_file tag raise found
 944                         }
 945                         $i tag raise sel
 946                 }
 947
 948                 set author_name {}
 949                 set author_email {}
 950                 set author_time {}
 951                 catch {set author_name $header($cmit,author)}
 952                 catch {set author_email $header($cmit,author-mail)}
 953                 catch {set author_time [format_date $header($cmit,author-time)]}
 954
 955                 set committer_name {}
 956                 set committer_email {}
 957                 set committer_time {}
 958                 catch {set committer_name $header($cmit,committer)}
 959                 catch {set committer_email $header($cmit,committer-mail)}
 960                 catch {set committer_time [format_date $header($cmit,committer-time)]}
 961
 962                 if {[catch {set msg $header($cmit,message)}]} {
 963                         set msg {}
 964                         catch {
 965                                 set fd [git_read cat-file commit $cmit]
 966                                 fconfigure $fd -encoding binary -translation lf
 967                                 # By default commits are assumed to be in utf-8
 968                                 set enc utf-8
 969                                 while {[gets $fd line] > 0} {
 970                                         if {[string match {encoding *} $line]} {
 971                                                 set enc [string tolower [string range $line 9 end]]
 972                                         }
 973                                 }
 974                                 set msg [read $fd]
 975                                 close $fd
 976
 977                                 set enc [tcl_encoding $enc]
 978                                 if {$enc ne {}} {
 979                                         set msg [encoding convertfrom $enc $msg]
 980                                 }
 981                                 set msg [string trim $msg]
 982                         }
 983                         set header($cmit,message) $msg
 984                 }
 985
 986                 $w_cviewer insert end "commit $cmit\n" header_key
 987                 $w_cviewer insert end [strcat [mc "Author:"] "\t"] header_key
 988                 $w_cviewer insert end "$author_name $author_email" header_val
 989                 $w_cviewer insert end "  $author_time\n" header_val
 990
 991                 $w_cviewer insert end [strcat [mc "Committer:"] "\t"] header_key
 992                 $w_cviewer insert end "$committer_name $committer_email" header_val
 993                 $w_cviewer insert end "  $committer_time\n" header_val
 994
 995                 if {$file ne $path} {
 996                         $w_cviewer insert end [strcat [mc "Original File:"] "\t"] header_key
 997                         $w_cviewer insert end "[escape_path $file]\n" header_val
 998                 }
 999
1000                 $w_cviewer insert end "\n$msg"
1001         }
1002         $w_cviewer conf -state disabled
1003
1004         set highlight_line $lno
1005         set highlight_commit $cmit
1006
1007         if {[lsearch -exact $tooltip_commit $highlight_commit] != -1} {
1008                 _hide_tooltip $this
1009         }
1010 }
1011
1012 method _get_click_amov_info {} {
1013         set pos @$::cursorX,$::cursorY
1014         set lno [lindex [split [$::cursorW index $pos] .] 0]
1015         return [lindex $amov_data $lno]
1016 }
1017
1018 method _copycommit {} {
1019         set dat [_get_click_amov_info $this]
1020         if {$dat ne {}} {
1021                 clipboard clear
1022                 clipboard append \
1023                         -format STRING \
1024                         -type STRING \
1025                         -- [lindex $dat 0]
1026         }
1027 }
1028
1029 method _format_offset_date {base offset} {
1030         set exval [expr {$base + $offset*24*60*60}]
1031         return [clock format $exval -format {%Y-%m-%d}]
1032 }
1033
1034 method _gitkcommit {} {
1035         global nullid
1036
1037         set dat [_get_click_amov_info $this]
1038         if {$dat ne {}} {
1039                 set cmit [lindex $dat 0]
1040
1041                 # If the line belongs to the working copy, use HEAD instead
1042                 if {$cmit eq $nullid} {
1043                         if {[catch {set cmit [git rev-parse --verify HEAD]} err]} {
1044                                 error_popup [strcat [mc "Cannot find HEAD commit:"] "\n\n$err"]
1045                                 return;
1046                         }
1047                 }
1048
1049                 set radius [get_config gui.blamehistoryctx]
1050                 set cmdline [list --select-commit=$cmit]
1051
1052                 if {$radius > 0} {
1053                         set author_time {}
1054                         set committer_time {}
1055
1056                         catch {set author_time $header($cmit,author-time)}
1057                         catch {set committer_time $header($cmit,committer-time)}
1058
1059                         if {$committer_time eq {}} {
1060                                 set committer_time $author_time
1061                         }
1062
1063                         set after_time [_format_offset_date $this $committer_time [expr {-$radius}]]
1064                         set before_time [_format_offset_date $this $committer_time $radius]
1065
1066                         lappend cmdline --after=$after_time --before=$before_time
1067                 }
1068
1069                 lappend cmdline $cmit
1070
1071                 set base_rev "HEAD"
1072                 if {$commit ne {}} {
1073                         set base_rev $commit
1074                 }
1075
1076                 if {$base_rev ne $cmit} {
1077                         lappend cmdline $base_rev
1078                 }
1079
1080                 do_gitk $cmdline
1081         }
1082 }
1083
1084 method _blameparent {} {
1085         global nullid
1086
1087         set dat [_get_click_amov_info $this]
1088         if {$dat ne {}} {
1089                 set cmit [lindex $dat 0]
1090                 set new_path [lindex $dat 1]
1091
1092                 # Allow using Blame Parent on lines modified in the working copy
1093                 if {$cmit eq $nullid} {
1094                         set parent_ref "HEAD"
1095                 } else {
1096                         set parent_ref "$cmit^"
1097                 }
1098                 if {[catch {set cparent [git rev-parse --verify $parent_ref]} err]} {
1099                         error_popup [strcat [mc "Cannot find parent commit:"] "\n\n$err"]
1100                         return;
1101                 }
1102
1103                 _kill $this
1104
1105                 # Generate a diff between the commit and its parent,
1106                 # and use the hunks to update the line number.
1107                 # Request zero context to simplify calculations.
1108                 if {$cmit eq $nullid} {
1109                         set diffcmd [list diff-index --unified=0 $cparent -- $new_path]
1110                 } else {
1111                         set diffcmd [list diff-tree --unified=0 $cparent $cmit -- $new_path]
1112                 }
1113                 if {[catch {set fd [eval git_read $diffcmd]} err]} {
1114                         $status stop [mc "Unable to display parent"]
1115                         error_popup [strcat [mc "Error loading diff:"] "\n\n$err"]
1116                         return
1117                 }
1118
1119                 set r_orig_line [lindex $dat 2]
1120
1121                 fconfigure $fd \
1122                         -blocking 0 \
1123                         -encoding binary \
1124                         -translation binary
1125                 fileevent $fd readable [cb _read_diff_load_commit \
1126                         $fd $cparent $new_path $r_orig_line]
1127                 set current_fd $fd
1128         }
1129 }
1130
1131 method _read_diff_load_commit {fd cparent new_path tline} {
1132         if {$fd ne $current_fd} {
1133                 catch {close $fd}
1134                 return
1135         }
1136
1137         while {[gets $fd line] >= 0} {
1138                 if {[regexp {^@@ -(\d+)(,(\d+))? \+(\d+)(,(\d+))? @@} $line line \
1139                         old_line osz old_size new_line nsz new_size]} {
1140
1141                         if {$osz eq {}} { set old_size 1 }
1142                         if {$nsz eq {}} { set new_size 1 }
1143
1144                         if {$new_line <= $tline} {
1145                                 if {[expr {$new_line + $new_size}] > $tline} {
1146                                         # Target line within the hunk
1147                                         set line_shift [expr {
1148                                                 ($new_size-$old_size)*($tline-$new_line)/$new_size
1149                                                 }]
1150                                 } else {
1151                                         set line_shift [expr {$new_size-$old_size}]
1152                                 }
1153
1154                                 set r_orig_line [expr {$r_orig_line - $line_shift}]
1155                         }
1156                 }
1157         }
1158
1159         if {[eof $fd]} {
1160                 close $fd;
1161                 set current_fd {}
1162
1163                 _load_new_commit $this  \
1164                         $cparent        \
1165                         $new_path       \
1166                         [list $r_orig_line]
1167         }
1168 } ifdeleted { catch {close $fd} }
1169
1170 method _show_tooltip {cur_w pos} {
1171         if {$tooltip_wm ne {}} {
1172                 _open_tooltip $this $cur_w
1173         } elseif {$tooltip_timer eq {}} {
1174                 set tooltip_timer [after 1000 [cb _open_tooltip $cur_w]]
1175         }
1176 }
1177
1178 method _open_tooltip {cur_w} {
1179         set tooltip_timer {}
1180         set pos_x [winfo pointerx $cur_w]
1181         set pos_y [winfo pointery $cur_w]
1182         if {[winfo containing $pos_x $pos_y] ne $cur_w} {
1183                 _hide_tooltip $this
1184                 return
1185         }
1186
1187         if {$tooltip_wm ne "$cur_w.tooltip"} {
1188                 _hide_tooltip $this
1189
1190                 set tooltip_wm [toplevel $cur_w.tooltip -borderwidth 1]
1191                 wm overrideredirect $tooltip_wm 1
1192                 wm transient $tooltip_wm [winfo toplevel $cur_w]
1193                 set tooltip_t $tooltip_wm.label
1194                 text $tooltip_t \
1195                         -takefocus 0 \
1196                         -highlightthickness 0 \
1197                         -relief flat \
1198                         -borderwidth 0 \
1199                         -wrap none \
1200                         -background lightyellow \
1201                         -foreground black
1202                 $tooltip_t tag conf section_header -font font_uibold
1203                 pack $tooltip_t
1204         } else {
1205                 $tooltip_t conf -state normal
1206                 $tooltip_t delete 0.0 end
1207         }
1208
1209         set pos @[join [list \
1210                 [expr {$pos_x - [winfo rootx $cur_w]}] \
1211                 [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
1212         set lno [lindex [split [$cur_w index $pos] .] 0]
1213         if {$cur_w eq $w_amov} {
1214                 set dat [lindex $amov_data $lno]
1215                 set org {}
1216         } else {
1217                 set dat [lindex $asim_data $lno]
1218                 set org [lindex $amov_data $lno]
1219         }
1220
1221         if {$dat eq {}} {
1222                 _hide_tooltip $this
1223                 return
1224         }
1225
1226         set cmit [lindex $dat 0]
1227         set tooltip_commit [list $cmit]
1228
1229         set author_name {}
1230         set summary     {}
1231         set author_time {}
1232         catch {set author_name $header($cmit,author)}
1233         catch {set summary     $header($cmit,summary)}
1234         catch {set author_time [format_date $header($cmit,author-time)]}
1235
1236         $tooltip_t insert end "commit $cmit\n"
1237         $tooltip_t insert end "$author_name  $author_time\n"
1238         $tooltip_t insert end "$summary"
1239
1240         if {$org ne {} && [lindex $org 0] ne $cmit} {
1241                 set save [$tooltip_t get 0.0 end]
1242                 $tooltip_t delete 0.0 end
1243
1244                 set cmit [lindex $org 0]
1245                 set file [lindex $org 1]
1246                 lappend tooltip_commit $cmit
1247
1248                 set author_name {}
1249                 set summary     {}
1250                 set author_time {}
1251                 catch {set author_name $header($cmit,author)}
1252                 catch {set summary     $header($cmit,summary)}
1253                 catch {set author_time [format_date $header($cmit,author-time)]}
1254
1255                 $tooltip_t insert end [strcat [mc "Originally By:"] "\n"] section_header
1256                 $tooltip_t insert end "commit $cmit\n"
1257                 $tooltip_t insert end "$author_name  $author_time\n"
1258                 $tooltip_t insert end "$summary\n"
1259
1260                 if {$file ne $path} {
1261                         $tooltip_t insert end [strcat [mc "In File:"] " "] section_header
1262                         $tooltip_t insert end "$file\n"
1263                 }
1264
1265                 $tooltip_t insert end "\n"
1266                 $tooltip_t insert end [strcat [mc "Copied Or Moved Here By:"] "\n"] section_header
1267                 $tooltip_t insert end $save
1268         }
1269
1270         $tooltip_t conf -state disabled
1271         _position_tooltip $this
1272
1273         # On MacOS raising a window causes it to acquire focus.
1274         # Tk 8.5 on MacOS seems to properly support wm transient,
1275         # so we can safely counter the effect there.
1276         if {$::have_tk85 && [is_MacOSX]} {
1277                 update
1278                 if {$w eq {}} {
1279                         raise .
1280                 } else {
1281                         raise $w
1282                 }
1283         }
1284 }
1285
1286 method _position_tooltip {} {
1287         set max_h [lindex [split [$tooltip_t index end] .] 0]
1288         set max_w 0
1289         for {set i 1} {$i <= $max_h} {incr i} {
1290                 set c [lindex [split [$tooltip_t index "$i.0 lineend"] .] 1]
1291                 if {$c > $max_w} {set max_w $c}
1292         }
1293         $tooltip_t conf -width $max_w -height $max_h
1294
1295         set req_w [winfo reqwidth  $tooltip_t]
1296         set req_h [winfo reqheight $tooltip_t]
1297         set pos_x [expr {[winfo pointerx .] +  5}]
1298         set pos_y [expr {[winfo pointery .] + 10}]
1299
1300         set g "${req_w}x${req_h}"
1301         if {$pos_x >= 0} {append g +}
1302         append g $pos_x
1303         if {$pos_y >= 0} {append g +}
1304         append g $pos_y
1305
1306         wm geometry $tooltip_wm $g
1307         if {![is_MacOSX]} {
1308                 raise $tooltip_wm
1309         }
1310 }
1311
1312 method _hide_tooltip {} {
1313         if {$tooltip_wm ne {}} {
1314                 destroy $tooltip_wm
1315                 set tooltip_wm {}
1316                 set tooltip_commit {}
1317         }
1318         if {$tooltip_timer ne {}} {
1319                 after cancel $tooltip_timer
1320                 set tooltip_timer {}
1321         }
1322 }
1323
1324 method _resize {new_height} {
1325         set diff [expr {$new_height - $old_height}]
1326         if {$diff == 0} return
1327
1328         set my [expr {[winfo height $w.file_pane] - 25}]
1329         set o [$w.file_pane sash coord 0]
1330         set ox [lindex $o 0]
1331         set oy [expr {[lindex $o 1] + $diff}]
1332         if {$oy < 0}   {set oy 0}
1333         if {$oy > $my} {set oy $my}
1334         $w.file_pane sash place 0 $ox $oy
1335
1336         set old_height $new_height
1337 }
1338
1339 }