git-gui / lib / blame.tclon commit Merge branch 'hm/maint-imap-send-crlf' into maint (be8198b)
   1# git-gui blame viewer
   2# Copyright (C) 2006, 2007 Shawn Pearce
   3
   4class blame {
   5
   6image create photo ::blame::img_back_arrow -data {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}
   7
   8# Persistant data (survives loads)
   9#
  10field history {}; # viewer history: {commit path}
  11field header    ; # array commit,key -> header field
  12
  13# Tk UI control paths
  14#
  15field w          ; # top window in this viewer
  16field w_back     ; # our back button
  17field w_path     ; # label showing the current file path
  18field w_columns  ; # list of all column widgets in the viewer
  19field w_line     ; # text column: all line numbers
  20field w_amov     ; # text column: annotations + move tracking
  21field w_asim     ; # text column: annotations (simple computation)
  22field w_file     ; # text column: actual file data
  23field w_cviewer  ; # pane showing commit message
  24field finder     ; # find mini-dialog frame
  25field status     ; # status mega-widget instance
  26field old_height ; # last known height of $w.file_pane
  27
  28
  29# Tk UI colors
  30#
  31variable active_color #c0edc5
  32variable group_colors {
  33        #d6d6d6
  34        #e1e1e1
  35        #ececec
  36}
  37
  38# Current blame data; cleared/reset on each load
  39#
  40field commit               ; # input commit to blame
  41field path                 ; # input filename to view in $commit
  42
  43field current_fd        {} ; # background process running
  44field highlight_line    -1 ; # current line selected
  45field highlight_column  {} ; # current commit column selected
  46field highlight_commit  {} ; # sha1 of commit selected
  47
  48field total_lines       0  ; # total length of file
  49field blame_lines       0  ; # number of lines computed
  50field amov_data            ; # list of {commit origfile origline}
  51field asim_data            ; # list of {commit origfile origline}
  52
  53field r_commit             ; # commit currently being parsed
  54field r_orig_line          ; # original line number
  55field r_final_line         ; # final line number
  56field r_line_count         ; # lines in this region
  57
  58field tooltip_wm        {} ; # Current tooltip toplevel, if open
  59field tooltip_t         {} ; # Text widget in $tooltip_wm
  60field tooltip_timer     {} ; # Current timer event for our tooltip
  61field tooltip_commit    {} ; # Commit(s) in tooltip
  62
  63constructor 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
 385method _focus_search {win} {
 386        if {[searchbar::visible $finder]} {
 387                focus [searchbar::editor $finder]
 388        } else {
 389                focus $win
 390        }
 391}
 392
 393method _handle_destroy {win} {
 394        if {$win eq $w} {
 395                _kill $this
 396                delete_this
 397        }
 398}
 399
 400method _kill {} {
 401        if {$current_fd ne {}} {
 402                kill_file_process $current_fd
 403                catch {close $current_fd}
 404                set current_fd {}
 405        }
 406}
 407
 408method _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 $path]
 452        if {$commit eq {}} {
 453                set fd [open $path r]
 454                fconfigure $fd -eofchar {}
 455        } else {
 456                set fd [git_read cat-file blob "$commit:$path"]
 457        }
 458        fconfigure $fd \
 459                -blocking 0 \
 460                -translation lf \
 461                -encoding [get_path_encoding $path]
 462        fileevent $fd readable [cb _read_file $fd $jump]
 463        set current_fd $fd
 464}
 465
 466method _history_menu {} {
 467        set m $w.backmenu
 468        if {[winfo exists $m]} {
 469                $m delete 0 end
 470        } else {
 471                menu $m -tearoff 0
 472        }
 473
 474        for {set i [expr {[llength $history] - 1}]
 475                } {$i >= 0} {incr i -1} {
 476                set e [lindex $history $i]
 477                set c [lindex $e 0]
 478                set f [lindex $e 1]
 479
 480                if {[regexp {^[0-9a-f]{40}$} $c]} {
 481                        set t [string range $c 0 8]...
 482                } elseif {$c eq {}} {
 483                        set t {Working Directory}
 484                } else {
 485                        set t $c
 486                }
 487                if {![catch {set summary $header($c,summary)}]} {
 488                        append t " $summary"
 489                        if {[string length $t] > 70} {
 490                                set t [string range $t 0 66]...
 491                        }
 492                }
 493
 494                $m add command -label $t -command [cb _goback $i]
 495        }
 496        set X [winfo rootx $w_back]
 497        set Y [expr {[winfo rooty $w_back] + [winfo height $w_back]}]
 498        tk_popup $m $X $Y
 499}
 500
 501method _goback {i} {
 502        set dat [lindex $history $i]
 503        set history [lrange $history 0 [expr {$i - 1}]]
 504        set commit [lindex $dat 0]
 505        set path [lindex $dat 1]
 506        _load $this [lrange $dat 2 5]
 507}
 508
 509method _read_file {fd jump} {
 510        if {$fd ne $current_fd} {
 511                catch {close $fd}
 512                return
 513        }
 514
 515        foreach i $w_columns {$i conf -state normal}
 516        while {[gets $fd line] >= 0} {
 517                regsub "\r\$" $line {} line
 518                incr total_lines
 519                lappend amov_data {}
 520                lappend asim_data {}
 521
 522                if {$total_lines > 1} {
 523                        foreach i $w_columns {$i insert end "\n"}
 524                }
 525
 526                $w_line insert end "$total_lines" linenumber
 527                $w_file insert end "$line"
 528        }
 529
 530        set ln_wc [expr {[string length $total_lines] + 2}]
 531        if {[$w_line cget -width] < $ln_wc} {
 532                $w_line conf -width $ln_wc
 533        }
 534
 535        foreach i $w_columns {$i conf -state disabled}
 536
 537        if {[eof $fd]} {
 538                close $fd
 539
 540                # If we don't force Tk to update the widgets *right now*
 541                # none of our jump commands will cause a change in the UI.
 542                #
 543                update
 544
 545                if {[llength $jump] == 1} {
 546                        set highlight_line [lindex $jump 0]
 547                        $w_file see "$highlight_line.0"
 548                } elseif {[llength $jump] == 4} {
 549                        set highlight_column [lindex $jump 0]
 550                        set highlight_line [lindex $jump 1]
 551                        $w_file xview moveto [lindex $jump 2]
 552                        $w_file yview moveto [lindex $jump 3]
 553                }
 554
 555                _exec_blame $this $w_asim @asim_data \
 556                        [list] \
 557                        [mc "Loading copy/move tracking annotations..."]
 558        }
 559} ifdeleted { catch {close $fd} }
 560
 561method _exec_blame {cur_w cur_d options cur_s} {
 562        lappend options --incremental --encoding=utf-8
 563        if {$commit eq {}} {
 564                lappend options --contents $path
 565        } else {
 566                lappend options $commit
 567        }
 568        lappend options -- $path
 569        set fd [eval git_read --nice blame $options]
 570        fconfigure $fd -blocking 0 -translation lf -encoding utf-8
 571        fileevent $fd readable [cb _read_blame $fd $cur_w $cur_d]
 572        set current_fd $fd
 573        set blame_lines 0
 574
 575        $status start \
 576                $cur_s \
 577                [mc "lines annotated"]
 578}
 579
 580method _read_blame {fd cur_w cur_d} {
 581        upvar #0 $cur_d line_data
 582        variable group_colors
 583
 584        if {$fd ne $current_fd} {
 585                catch {close $fd}
 586                return
 587        }
 588
 589        $cur_w conf -state normal
 590        while {[gets $fd line] >= 0} {
 591                if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
 592                        cmit original_line final_line line_count]} {
 593                        set r_commit     $cmit
 594                        set r_orig_line  $original_line
 595                        set r_final_line $final_line
 596                        set r_line_count $line_count
 597                } elseif {[string match {filename *} $line]} {
 598                        set file [string range $line 9 end]
 599                        set n    $r_line_count
 600                        set lno  $r_final_line
 601                        set oln  $r_orig_line
 602                        set cmit $r_commit
 603
 604                        if {[regexp {^0{40}$} $cmit]} {
 605                                set commit_abbr work
 606                                set commit_type curr_commit
 607                        } elseif {$cmit eq $commit} {
 608                                set commit_abbr this
 609                                set commit_type curr_commit
 610                        } else {
 611                                set commit_type prior_commit
 612                                set commit_abbr [string range $cmit 0 3]
 613                        }
 614
 615                        set author_abbr {}
 616                        set a_name {}
 617                        catch {set a_name $header($cmit,author)}
 618                        while {$a_name ne {}} {
 619                                if {$author_abbr ne {}
 620                                        && [string index $a_name 0] eq {'}} {
 621                                        regsub {^'[^']+'\s+} $a_name {} a_name
 622                                }
 623                                if {![regexp {^([[:upper:]])} $a_name _a]} break
 624                                append author_abbr $_a
 625                                unset _a
 626                                if {![regsub \
 627                                        {^[[:upper:]][^\s]*\s+} \
 628                                        $a_name {} a_name ]} break
 629                        }
 630                        if {$author_abbr eq {}} {
 631                                set author_abbr { |}
 632                        } else {
 633                                set author_abbr [string range $author_abbr 0 3]
 634                        }
 635                        unset a_name
 636
 637                        set first_lno $lno
 638                        while {
 639                           $first_lno > 1
 640                        && $cmit eq [lindex $line_data [expr {$first_lno - 1}] 0]
 641                        && $file eq [lindex $line_data [expr {$first_lno - 1}] 1]
 642                        } {
 643                                incr first_lno -1
 644                        }
 645
 646                        set color {}
 647                        if {$first_lno < $lno} {
 648                                foreach g [$w_file tag names $first_lno.0] {
 649                                        if {[regexp {^color[0-9]+$} $g]} {
 650                                                set color $g
 651                                                break
 652                                        }
 653                                }
 654                        } else {
 655                                set i [lsort [concat \
 656                                        [$w_file tag names "[expr {$first_lno - 1}].0"] \
 657                                        [$w_file tag names "[expr {$lno + $n}].0"] \
 658                                        ]]
 659                                for {set g 0} {$g < [llength $group_colors]} {incr g} {
 660                                        if {[lsearch -sorted -exact $i color$g] == -1} {
 661                                                set color color$g
 662                                                break
 663                                        }
 664                                }
 665                        }
 666                        if {$color eq {}} {
 667                                set color color0
 668                        }
 669
 670                        while {$n > 0} {
 671                                set lno_e "$lno.0 lineend + 1c"
 672                                if {[lindex $line_data $lno] ne {}} {
 673                                        set g [lindex $line_data $lno 0]
 674                                        foreach i $w_columns {
 675                                                $i tag remove g$g $lno.0 $lno_e
 676                                        }
 677                                }
 678                                lset line_data $lno [list $cmit $file $oln]
 679
 680                                $cur_w delete $lno.0 "$lno.0 lineend"
 681                                if {$lno == $first_lno} {
 682                                        $cur_w insert $lno.0 $commit_abbr $commit_type
 683                                } elseif {$lno == [expr {$first_lno + 1}]} {
 684                                        $cur_w insert $lno.0 $author_abbr author_abbr
 685                                } else {
 686                                        $cur_w insert $lno.0 { |}
 687                                }
 688
 689                                foreach i $w_columns {
 690                                        if {$cur_w eq $w_amov} {
 691                                                for {set g 0} \
 692                                                        {$g < [llength $group_colors]} \
 693                                                        {incr g} {
 694                                                        $i tag remove color$g $lno.0 $lno_e
 695                                                }
 696                                                $i tag add $color $lno.0 $lno_e
 697                                        }
 698                                        $i tag add g$cmit $lno.0 $lno_e
 699                                }
 700
 701                                if {$highlight_column eq $cur_w} {
 702                                        if {$highlight_line == -1
 703                                         && [lindex [$w_file yview] 0] == 0} {
 704                                                $w_file see $lno.0
 705                                                set highlight_line $lno
 706                                        }
 707                                        if {$highlight_line == $lno} {
 708                                                _showcommit $this $cur_w $lno
 709                                        }
 710                                }
 711
 712                                incr n -1
 713                                incr lno
 714                                incr oln
 715                                incr blame_lines
 716                        }
 717
 718                        while {
 719                           $cmit eq [lindex $line_data $lno 0]
 720                        && $file eq [lindex $line_data $lno 1]
 721                        } {
 722                                $cur_w delete $lno.0 "$lno.0 lineend"
 723
 724                                if {$lno == $first_lno} {
 725                                        $cur_w insert $lno.0 $commit_abbr $commit_type
 726                                } elseif {$lno == [expr {$first_lno + 1}]} {
 727                                        $cur_w insert $lno.0 $author_abbr author_abbr
 728                                } else {
 729                                        $cur_w insert $lno.0 { |}
 730                                }
 731
 732                                if {$cur_w eq $w_amov} {
 733                                        foreach i $w_columns {
 734                                                for {set g 0} \
 735                                                        {$g < [llength $group_colors]} \
 736                                                        {incr g} {
 737                                                        $i tag remove color$g $lno.0 $lno_e
 738                                                }
 739                                                $i tag add $color $lno.0 $lno_e
 740                                        }
 741                                }
 742
 743                                incr lno
 744                        }
 745
 746                } elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
 747                        set header($r_commit,$key) $data
 748                }
 749        }
 750        $cur_w conf -state disabled
 751
 752        if {[eof $fd]} {
 753                close $fd
 754                if {$cur_w eq $w_asim} {
 755                        # Switches for original location detection
 756                        set threshold [get_config gui.copyblamethreshold]
 757                        set original_options [list "-C$threshold"]
 758
 759                        if {![is_config_true gui.fastcopyblame]} {
 760                                # thorough copy search; insert before the threshold
 761                                set original_options [linsert $original_options 0 -C]
 762                        }
 763                        if {[git-version >= 1.5.3]} {
 764                                lappend original_options -w ; # ignore indentation changes
 765                        }
 766
 767                        _exec_blame $this $w_amov @amov_data \
 768                                $original_options \
 769                                [mc "Loading original location annotations..."]
 770                } else {
 771                        set current_fd {}
 772                        $status stop [mc "Annotation complete."]
 773                }
 774        } else {
 775                $status update $blame_lines $total_lines
 776        }
 777} ifdeleted { catch {close $fd} }
 778
 779method _find_commit_bound {data_list start_idx delta} {
 780        upvar #0 $data_list line_data
 781        set pos $start_idx
 782        set limit       [expr {[llength $line_data] - 1}]
 783        set base_commit [lindex $line_data $pos 0]
 784
 785        while {$pos > 0 && $pos < $limit} {
 786                set new_pos [expr {$pos + $delta}]
 787                if {[lindex $line_data $new_pos 0] ne $base_commit} {
 788                        return $pos
 789                }
 790
 791                set pos $new_pos
 792        }
 793
 794        return $pos
 795}
 796
 797method _fullcopyblame {} {
 798        if {$current_fd ne {}} {
 799                tk_messageBox \
 800                        -icon error \
 801                        -type ok \
 802                        -title [mc "Busy"] \
 803                        -message [mc "Annotation process is already running."]
 804
 805                return
 806        }
 807
 808        # Switches for original location detection
 809        set threshold [get_config gui.copyblamethreshold]
 810        set original_options [list -C -C "-C$threshold"]
 811
 812        if {[git-version >= 1.5.3]} {
 813                lappend original_options -w ; # ignore indentation changes
 814        }
 815
 816        # Find the line range
 817        set pos @$::cursorX,$::cursorY
 818        set lno [lindex [split [$::cursorW index $pos] .] 0]
 819        set min_amov_lno [_find_commit_bound $this @amov_data $lno -1]
 820        set max_amov_lno [_find_commit_bound $this @amov_data $lno 1]
 821        set min_asim_lno [_find_commit_bound $this @asim_data $lno -1]
 822        set max_asim_lno [_find_commit_bound $this @asim_data $lno 1]
 823
 824        if {$min_asim_lno < $min_amov_lno} {
 825                set min_amov_lno $min_asim_lno
 826        }
 827
 828        if {$max_asim_lno > $max_amov_lno} {
 829                set max_amov_lno $max_asim_lno
 830        }
 831
 832        lappend original_options -L "$min_amov_lno,$max_amov_lno"
 833
 834        # Clear lines
 835        for {set i $min_amov_lno} {$i <= $max_amov_lno} {incr i} {
 836                lset amov_data $i [list ]
 837        }
 838
 839        # Start the back-end process
 840        _exec_blame $this $w_amov @amov_data \
 841                $original_options \
 842                [mc "Running thorough copy detection..."]
 843}
 844
 845method _click {cur_w pos} {
 846        set lno [lindex [split [$cur_w index $pos] .] 0]
 847        _showcommit $this $cur_w $lno
 848}
 849
 850method _setencoding {enc} {
 851        force_path_encoding $path $enc
 852        _load $this [list \
 853                $highlight_column \
 854                $highlight_line \
 855                [lindex [$w_file xview] 0] \
 856                [lindex [$w_file yview] 0] \
 857                ]
 858}
 859
 860method _load_commit {cur_w cur_d pos} {
 861        upvar #0 $cur_d line_data
 862        set lno [lindex [split [$cur_w index $pos] .] 0]
 863        set dat [lindex $line_data $lno]
 864        if {$dat ne {}} {
 865                _load_new_commit $this  \
 866                        [lindex $dat 0] \
 867                        [lindex $dat 1] \
 868                        [list [lindex $dat 2]]
 869        }
 870}
 871
 872method _load_new_commit {new_commit new_path jump} {
 873        lappend history [list \
 874                $commit $path \
 875                $highlight_column \
 876                $highlight_line \
 877                [lindex [$w_file xview] 0] \
 878                [lindex [$w_file yview] 0] \
 879                ]
 880
 881        set commit $new_commit
 882        set path   $new_path
 883        _load $this $jump
 884}
 885
 886method _showcommit {cur_w lno} {
 887        global repo_config
 888        variable active_color
 889
 890        if {$highlight_commit ne {}} {
 891                foreach i $w_columns {
 892                        $i tag conf g$highlight_commit -background {}
 893                        $i tag lower g$highlight_commit
 894                }
 895        }
 896
 897        if {$cur_w eq $w_asim} {
 898                set dat [lindex $asim_data $lno]
 899                set highlight_column $w_asim
 900        } else {
 901                set dat [lindex $amov_data $lno]
 902                set highlight_column $w_amov
 903        }
 904
 905        $w_cviewer conf -state normal
 906        $w_cviewer delete 0.0 end
 907
 908        if {$dat eq {}} {
 909                set cmit {}
 910                $w_cviewer insert end [mc "Loading annotation..."] still_loading
 911        } else {
 912                set cmit [lindex $dat 0]
 913                set file [lindex $dat 1]
 914
 915                foreach i $w_columns {
 916                        $i tag conf g$cmit -background $active_color
 917                        $i tag raise g$cmit
 918                        if {$i eq $w_file} {
 919                                $w_file tag raise found
 920                        }
 921                        $i tag raise sel
 922                }
 923
 924                set author_name {}
 925                set author_email {}
 926                set author_time {}
 927                catch {set author_name $header($cmit,author)}
 928                catch {set author_email $header($cmit,author-mail)}
 929                catch {set author_time [format_date $header($cmit,author-time)]}
 930
 931                set committer_name {}
 932                set committer_email {}
 933                set committer_time {}
 934                catch {set committer_name $header($cmit,committer)}
 935                catch {set committer_email $header($cmit,committer-mail)}
 936                catch {set committer_time [format_date $header($cmit,committer-time)]}
 937
 938                if {[catch {set msg $header($cmit,message)}]} {
 939                        set msg {}
 940                        catch {
 941                                set fd [git_read cat-file commit $cmit]
 942                                fconfigure $fd -encoding binary -translation lf
 943                                # By default commits are assumed to be in utf-8
 944                                set enc utf-8
 945                                while {[gets $fd line] > 0} {
 946                                        if {[string match {encoding *} $line]} {
 947                                                set enc [string tolower [string range $line 9 end]]
 948                                        }
 949                                }
 950                                set msg [read $fd]
 951                                close $fd
 952
 953                                set enc [tcl_encoding $enc]
 954                                if {$enc ne {}} {
 955                                        set msg [encoding convertfrom $enc $msg]
 956                                }
 957                                set msg [string trim $msg]
 958                        }
 959                        set header($cmit,message) $msg
 960                }
 961
 962                $w_cviewer insert end "commit $cmit\n" header_key
 963                $w_cviewer insert end [strcat [mc "Author:"] "\t"] header_key
 964                $w_cviewer insert end "$author_name $author_email" header_val
 965                $w_cviewer insert end "  $author_time\n" header_val
 966
 967                $w_cviewer insert end [strcat [mc "Committer:"] "\t"] header_key
 968                $w_cviewer insert end "$committer_name $committer_email" header_val
 969                $w_cviewer insert end "  $committer_time\n" header_val
 970
 971                if {$file ne $path} {
 972                        $w_cviewer insert end [strcat [mc "Original File:"] "\t"] header_key
 973                        $w_cviewer insert end "[escape_path $file]\n" header_val
 974                }
 975
 976                $w_cviewer insert end "\n$msg"
 977        }
 978        $w_cviewer conf -state disabled
 979
 980        set highlight_line $lno
 981        set highlight_commit $cmit
 982
 983        if {[lsearch -exact $tooltip_commit $highlight_commit] != -1} {
 984                _hide_tooltip $this
 985        }
 986}
 987
 988method _get_click_amov_info {} {
 989        set pos @$::cursorX,$::cursorY
 990        set lno [lindex [split [$::cursorW index $pos] .] 0]
 991        return [lindex $amov_data $lno]
 992}
 993
 994method _copycommit {} {
 995        set dat [_get_click_amov_info $this]
 996        if {$dat ne {}} {
 997                clipboard clear
 998                clipboard append \
 999                        -format STRING \
1000                        -type STRING \
1001                        -- [lindex $dat 0]
1002        }
1003}
1004
1005method _format_offset_date {base offset} {
1006        set exval [expr {$base + $offset*24*60*60}]
1007        return [clock format $exval -format {%Y-%m-%d}]
1008}
1009
1010method _gitkcommit {} {
1011        global nullid
1012
1013        set dat [_get_click_amov_info $this]
1014        if {$dat ne {}} {
1015                set cmit [lindex $dat 0]
1016
1017                # If the line belongs to the working copy, use HEAD instead
1018                if {$cmit eq $nullid} {
1019                        if {[catch {set cmit [git rev-parse --verify HEAD]} err]} {
1020                                error_popup [strcat [mc "Cannot find HEAD commit:"] "\n\n$err"]
1021                                return;
1022                        }
1023                }
1024
1025                set radius [get_config gui.blamehistoryctx]
1026                set cmdline [list --select-commit=$cmit]
1027
1028                if {$radius > 0} {
1029                        set author_time {}
1030                        set committer_time {}
1031
1032                        catch {set author_time $header($cmit,author-time)}
1033                        catch {set committer_time $header($cmit,committer-time)}
1034
1035                        if {$committer_time eq {}} {
1036                                set committer_time $author_time
1037                        }
1038
1039                        set after_time [_format_offset_date $this $committer_time [expr {-$radius}]]
1040                        set before_time [_format_offset_date $this $committer_time $radius]
1041
1042                        lappend cmdline --after=$after_time --before=$before_time
1043                }
1044
1045                lappend cmdline $cmit
1046
1047                set base_rev "HEAD"
1048                if {$commit ne {}} {
1049                        set base_rev $commit
1050                }
1051
1052                if {$base_rev ne $cmit} {
1053                        lappend cmdline $base_rev
1054                }
1055
1056                do_gitk $cmdline
1057        }
1058}
1059
1060method _blameparent {} {
1061        global nullid
1062
1063        set dat [_get_click_amov_info $this]
1064        if {$dat ne {}} {
1065                set cmit [lindex $dat 0]
1066                set new_path [lindex $dat 1]
1067
1068                # Allow using Blame Parent on lines modified in the working copy
1069                if {$cmit eq $nullid} {
1070                        set parent_ref "HEAD"
1071                } else {
1072                        set parent_ref "$cmit^"
1073                }
1074                if {[catch {set cparent [git rev-parse --verify $parent_ref]} err]} {
1075                        error_popup [strcat [mc "Cannot find parent commit:"] "\n\n$err"]
1076                        return;
1077                }
1078
1079                _kill $this
1080
1081                # Generate a diff between the commit and its parent,
1082                # and use the hunks to update the line number.
1083                # Request zero context to simplify calculations.
1084                if {$cmit eq $nullid} {
1085                        set diffcmd [list diff-index --unified=0 $cparent -- $new_path]
1086                } else {
1087                        set diffcmd [list diff-tree --unified=0 $cparent $cmit -- $new_path]
1088                }
1089                if {[catch {set fd [eval git_read $diffcmd]} err]} {
1090                        $status stop [mc "Unable to display parent"]
1091                        error_popup [strcat [mc "Error loading diff:"] "\n\n$err"]
1092                        return
1093                }
1094
1095                set r_orig_line [lindex $dat 2]
1096
1097                fconfigure $fd \
1098                        -blocking 0 \
1099                        -encoding binary \
1100                        -translation binary
1101                fileevent $fd readable [cb _read_diff_load_commit \
1102                        $fd $cparent $new_path $r_orig_line]
1103                set current_fd $fd
1104        }
1105}
1106
1107method _read_diff_load_commit {fd cparent new_path tline} {
1108        if {$fd ne $current_fd} {
1109                catch {close $fd}
1110                return
1111        }
1112
1113        while {[gets $fd line] >= 0} {
1114                if {[regexp {^@@ -(\d+)(,(\d+))? \+(\d+)(,(\d+))? @@} $line line \
1115                        old_line osz old_size new_line nsz new_size]} {
1116
1117                        if {$osz eq {}} { set old_size 1 }
1118                        if {$nsz eq {}} { set new_size 1 }
1119
1120                        if {$new_line <= $tline} {
1121                                if {[expr {$new_line + $new_size}] > $tline} {
1122                                        # Target line within the hunk
1123                                        set line_shift [expr {
1124                                                ($new_size-$old_size)*($tline-$new_line)/$new_size
1125                                                }]
1126                                } else {
1127                                        set line_shift [expr {$new_size-$old_size}]
1128                                }
1129
1130                                set r_orig_line [expr {$r_orig_line - $line_shift}]
1131                        }
1132                }
1133        }
1134
1135        if {[eof $fd]} {
1136                close $fd;
1137                set current_fd {}
1138
1139                _load_new_commit $this  \
1140                        $cparent        \
1141                        $new_path       \
1142                        [list $r_orig_line]
1143        }
1144} ifdeleted { catch {close $fd} }
1145
1146method _show_tooltip {cur_w pos} {
1147        if {$tooltip_wm ne {}} {
1148                _open_tooltip $this $cur_w
1149        } elseif {$tooltip_timer eq {}} {
1150                set tooltip_timer [after 1000 [cb _open_tooltip $cur_w]]
1151        }
1152}
1153
1154method _open_tooltip {cur_w} {
1155        set tooltip_timer {}
1156        set pos_x [winfo pointerx $cur_w]
1157        set pos_y [winfo pointery $cur_w]
1158        if {[winfo containing $pos_x $pos_y] ne $cur_w} {
1159                _hide_tooltip $this
1160                return
1161        }
1162
1163        if {$tooltip_wm ne "$cur_w.tooltip"} {
1164                _hide_tooltip $this
1165
1166                set tooltip_wm [toplevel $cur_w.tooltip -borderwidth 1]
1167                wm overrideredirect $tooltip_wm 1
1168                wm transient $tooltip_wm [winfo toplevel $cur_w]
1169                set tooltip_t $tooltip_wm.label
1170                text $tooltip_t \
1171                        -takefocus 0 \
1172                        -highlightthickness 0 \
1173                        -relief flat \
1174                        -borderwidth 0 \
1175                        -wrap none \
1176                        -background lightyellow \
1177                        -foreground black
1178                $tooltip_t tag conf section_header -font font_uibold
1179                pack $tooltip_t
1180        } else {
1181                $tooltip_t conf -state normal
1182                $tooltip_t delete 0.0 end
1183        }
1184
1185        set pos @[join [list \
1186                [expr {$pos_x - [winfo rootx $cur_w]}] \
1187                [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
1188        set lno [lindex [split [$cur_w index $pos] .] 0]
1189        if {$cur_w eq $w_amov} {
1190                set dat [lindex $amov_data $lno]
1191                set org {}
1192        } else {
1193                set dat [lindex $asim_data $lno]
1194                set org [lindex $amov_data $lno]
1195        }
1196
1197        if {$dat eq {}} {
1198                _hide_tooltip $this
1199                return
1200        }
1201
1202        set cmit [lindex $dat 0]
1203        set tooltip_commit [list $cmit]
1204
1205        set author_name {}
1206        set summary     {}
1207        set author_time {}
1208        catch {set author_name $header($cmit,author)}
1209        catch {set summary     $header($cmit,summary)}
1210        catch {set author_time [format_date $header($cmit,author-time)]}
1211
1212        $tooltip_t insert end "commit $cmit\n"
1213        $tooltip_t insert end "$author_name  $author_time\n"
1214        $tooltip_t insert end "$summary"
1215
1216        if {$org ne {} && [lindex $org 0] ne $cmit} {
1217                set save [$tooltip_t get 0.0 end]
1218                $tooltip_t delete 0.0 end
1219
1220                set cmit [lindex $org 0]
1221                set file [lindex $org 1]
1222                lappend tooltip_commit $cmit
1223
1224                set author_name {}
1225                set summary     {}
1226                set author_time {}
1227                catch {set author_name $header($cmit,author)}
1228                catch {set summary     $header($cmit,summary)}
1229                catch {set author_time [format_date $header($cmit,author-time)]}
1230
1231                $tooltip_t insert end [strcat [mc "Originally By:"] "\n"] section_header
1232                $tooltip_t insert end "commit $cmit\n"
1233                $tooltip_t insert end "$author_name  $author_time\n"
1234                $tooltip_t insert end "$summary\n"
1235
1236                if {$file ne $path} {
1237                        $tooltip_t insert end [strcat [mc "In File:"] " "] section_header
1238                        $tooltip_t insert end "$file\n"
1239                }
1240
1241                $tooltip_t insert end "\n"
1242                $tooltip_t insert end [strcat [mc "Copied Or Moved Here By:"] "\n"] section_header
1243                $tooltip_t insert end $save
1244        }
1245
1246        $tooltip_t conf -state disabled
1247        _position_tooltip $this
1248
1249        # On MacOS raising a window causes it to acquire focus.
1250        # Tk 8.5 on MacOS seems to properly support wm transient,
1251        # so we can safely counter the effect there.
1252        if {$::have_tk85 && [is_MacOSX]} {
1253                update
1254                if {$w eq {}} {
1255                        raise .
1256                } else {
1257                        raise $w
1258                }
1259        }
1260}
1261
1262method _position_tooltip {} {
1263        set max_h [lindex [split [$tooltip_t index end] .] 0]
1264        set max_w 0
1265        for {set i 1} {$i <= $max_h} {incr i} {
1266                set c [lindex [split [$tooltip_t index "$i.0 lineend"] .] 1]
1267                if {$c > $max_w} {set max_w $c}
1268        }
1269        $tooltip_t conf -width $max_w -height $max_h
1270
1271        set req_w [winfo reqwidth  $tooltip_t]
1272        set req_h [winfo reqheight $tooltip_t]
1273        set pos_x [expr {[winfo pointerx .] +  5}]
1274        set pos_y [expr {[winfo pointery .] + 10}]
1275
1276        set g "${req_w}x${req_h}"
1277        if {$pos_x >= 0} {append g +}
1278        append g $pos_x
1279        if {$pos_y >= 0} {append g +}
1280        append g $pos_y
1281
1282        wm geometry $tooltip_wm $g
1283        if {![is_MacOSX]} {
1284                raise $tooltip_wm
1285        }
1286}
1287
1288method _hide_tooltip {} {
1289        if {$tooltip_wm ne {}} {
1290                destroy $tooltip_wm
1291                set tooltip_wm {}
1292                set tooltip_commit {}
1293        }
1294        if {$tooltip_timer ne {}} {
1295                after cancel $tooltip_timer
1296                set tooltip_timer {}
1297        }
1298}
1299
1300method _resize {new_height} {
1301        set diff [expr {$new_height - $old_height}]
1302        if {$diff == 0} return
1303
1304        set my [expr {[winfo height $w.file_pane] - 25}]
1305        set o [$w.file_pane sash coord 0]
1306        set ox [lindex $o 0]
1307        set oy [expr {[lindex $o 1] + $diff}]
1308        if {$oy < 0}   {set oy 0}
1309        if {$oy > $my} {set oy $my}
1310        $w.file_pane sash place 0 $ox $oy
1311
1312        set old_height $new_height
1313}
1314
1315}