14fde81761315aa67363fa549d78a56413f86069
   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 gotoline   ; # line goto mini-dialog frame
  26field status     ; # status mega-widget instance
  27field old_height ; # last known height of $w.file_pane
  28
  29
  30# Tk UI colors
  31#
  32variable active_color #c0edc5
  33variable group_colors {
  34        #d6d6d6
  35        #e1e1e1
  36        #ececec
  37}
  38
  39# Current blame data; cleared/reset on each load
  40#
  41field commit               ; # input commit to blame
  42field path                 ; # input filename to view in $commit
  43
  44field current_fd        {} ; # background process running
  45field highlight_line    -1 ; # current line selected
  46field highlight_column  {} ; # current commit column selected
  47field highlight_commit  {} ; # sha1 of commit selected
  48
  49field total_lines       0  ; # total length of file
  50field blame_lines       0  ; # number of lines computed
  51field amov_data            ; # list of {commit origfile origline}
  52field asim_data            ; # list of {commit origfile origline}
  53
  54field r_commit             ; # commit currently being parsed
  55field r_orig_line          ; # original line number
  56field r_final_line         ; # final line number
  57field r_line_count         ; # lines in this region
  58
  59field tooltip_wm        {} ; # Current tooltip toplevel, if open
  60field tooltip_t         {} ; # Text widget in $tooltip_wm
  61field tooltip_timer     {} ; # Current timer event for our tooltip
  62field tooltip_commit    {} ; # Commit(s) in tooltip
  63
  64constructor new {i_commit i_path i_jump} {
  65        global cursor_ptr M1B M1T have_tk85 use_ttk NS
  66        variable active_color
  67        variable group_colors
  68
  69        set commit $i_commit
  70        set path   $i_path
  71
  72        make_toplevel top w
  73        wm title $top [append "[appname] ([reponame]): " [mc "File Viewer"]]
  74
  75        set font_w [font measure font_diff "0"]
  76
  77        gold_frame $w.header
  78        tlabel $w.header.commit_l \
  79                -text [mc "Commit:"] \
  80                -background gold \
  81                -foreground black \
  82                -anchor w \
  83                -justify left
  84        set w_back $w.header.commit_b
  85        tlabel $w_back \
  86                -image ::blame::img_back_arrow \
  87                -borderwidth 0 \
  88                -relief flat \
  89                -state disabled \
  90                -background gold \
  91                -foreground black \
  92                -activebackground gold
  93        bind $w_back <Button-1> "
  94                if {\[$w_back cget -state\] eq {normal}} {
  95                        [cb _history_menu]
  96                }
  97                "
  98        tlabel $w.header.commit \
  99                -textvariable @commit \
 100                -background gold \
 101                -foreground black \
 102                -anchor w \
 103                -justify left
 104        tlabel $w.header.path_l \
 105                -text [mc "File:"] \
 106                -background gold \
 107                -foreground black \
 108                -anchor w \
 109                -justify left
 110        set w_path $w.header.path
 111        tlabel $w_path \
 112                -background gold \
 113                -foreground black \
 114                -anchor w \
 115                -justify left
 116        pack $w.header.commit_l -side left
 117        pack $w_back -side left
 118        pack $w.header.commit -side left
 119        pack $w_path -fill x -side right
 120        pack $w.header.path_l -side right
 121
 122        panedwindow $w.file_pane -orient vertical -borderwidth 0 -sashwidth 3
 123        frame $w.file_pane.out -relief flat -borderwidth 1
 124        frame $w.file_pane.cm -relief sunken -borderwidth 1
 125        $w.file_pane add $w.file_pane.out \
 126                -sticky nsew \
 127                -minsize 100 \
 128                -height 100 \
 129                -width 100
 130        $w.file_pane add $w.file_pane.cm \
 131                -sticky nsew \
 132                -minsize 25 \
 133                -height 25 \
 134                -width 100
 135
 136        set w_line $w.file_pane.out.linenumber_t
 137        text $w_line \
 138                -takefocus 0 \
 139                -highlightthickness 0 \
 140                -padx 0 -pady 0 \
 141                -background white \
 142                -foreground black \
 143                -borderwidth 0 \
 144                -state disabled \
 145                -wrap none \
 146                -height 40 \
 147                -width 6 \
 148                -font font_diff
 149        $w_line tag conf linenumber -justify right -rmargin 5
 150
 151        set w_amov $w.file_pane.out.amove_t
 152        text $w_amov \
 153                -takefocus 0 \
 154                -highlightthickness 0 \
 155                -padx 0 -pady 0 \
 156                -background white \
 157                -foreground black \
 158                -borderwidth 0 \
 159                -state disabled \
 160                -wrap none \
 161                -height 40 \
 162                -width 5 \
 163                -font font_diff
 164        $w_amov tag conf author_abbr -justify right -rmargin 5
 165        $w_amov tag conf curr_commit
 166        $w_amov tag conf prior_commit -foreground blue -underline 1
 167        $w_amov tag bind prior_commit \
 168                <Button-1> \
 169                "[cb _load_commit $w_amov @amov_data @%x,%y];break"
 170
 171        set w_asim $w.file_pane.out.asimple_t
 172        text $w_asim \
 173                -takefocus 0 \
 174                -highlightthickness 0 \
 175                -padx 0 -pady 0 \
 176                -background white \
 177                -foreground black \
 178                -borderwidth 0 \
 179                -state disabled \
 180                -wrap none \
 181                -height 40 \
 182                -width 4 \
 183                -font font_diff
 184        $w_asim tag conf author_abbr -justify right
 185        $w_asim tag conf curr_commit
 186        $w_asim tag conf prior_commit -foreground blue -underline 1
 187        $w_asim tag bind prior_commit \
 188                <Button-1> \
 189                "[cb _load_commit $w_asim @asim_data @%x,%y];break"
 190
 191        set w_file $w.file_pane.out.file_t
 192        text $w_file \
 193                -takefocus 0 \
 194                -highlightthickness 0 \
 195                -padx 0 -pady 0 \
 196                -background white \
 197                -foreground black \
 198                -borderwidth 0 \
 199                -state disabled \
 200                -wrap none \
 201                -height 40 \
 202                -width 80 \
 203                -xscrollcommand [list $w.file_pane.out.sbx set] \
 204                -font font_diff
 205        if {$have_tk85} {
 206                $w_file configure -inactiveselectbackground darkblue
 207        }
 208        $w_file tag conf found \
 209                -background yellow
 210
 211        set w_columns [list $w_amov $w_asim $w_line $w_file]
 212
 213        ${NS}::scrollbar $w.file_pane.out.sbx \
 214                -orient h \
 215                -command [list $w_file xview]
 216        ${NS}::scrollbar $w.file_pane.out.sby \
 217                -orient v \
 218                -command [list scrollbar2many $w_columns yview]
 219        eval grid $w_columns $w.file_pane.out.sby -sticky nsew
 220        grid conf \
 221                $w.file_pane.out.sbx \
 222                -column [expr {[llength $w_columns] - 1}] \
 223                -sticky we
 224        grid columnconfigure \
 225                $w.file_pane.out \
 226                [expr {[llength $w_columns] - 1}] \
 227                -weight 1
 228        grid rowconfigure $w.file_pane.out 0 -weight 1
 229
 230        set finder [::searchbar::new \
 231                $w.file_pane.out.ff $w_file \
 232                -column [expr {[llength $w_columns] - 1}] \
 233                ]
 234
 235        set gotoline [::linebar::new \
 236                $w.file_pane.out.lf $w_file \
 237                -column [expr {[llength $w_columns] - 1}] \
 238                ]
 239
 240        set w_cviewer $w.file_pane.cm.t
 241        text $w_cviewer \
 242                -background white \
 243                -foreground black \
 244                -borderwidth 0 \
 245                -state disabled \
 246                -wrap none \
 247                -height 10 \
 248                -width 80 \
 249                -xscrollcommand [list $w.file_pane.cm.sbx set] \
 250                -yscrollcommand [list $w.file_pane.cm.sby set] \
 251                -font font_diff
 252        $w_cviewer tag conf still_loading \
 253                -font font_uiitalic \
 254                -justify center
 255        $w_cviewer tag conf header_key \
 256                -tabs {3c} \
 257                -background $active_color \
 258                -font font_uibold
 259        $w_cviewer tag conf header_val \
 260                -background $active_color \
 261                -font font_ui
 262        $w_cviewer tag raise sel
 263        ${NS}::scrollbar $w.file_pane.cm.sbx \
 264                -orient h \
 265                -command [list $w_cviewer xview]
 266        ${NS}::scrollbar $w.file_pane.cm.sby \
 267                -orient v \
 268                -command [list $w_cviewer yview]
 269        pack $w.file_pane.cm.sby -side right -fill y
 270        pack $w.file_pane.cm.sbx -side bottom -fill x
 271        pack $w_cviewer -expand 1 -fill both
 272
 273        set status [::status_bar::new $w.status]
 274
 275        menu $w.ctxm -tearoff 0
 276        $w.ctxm add command \
 277                -label [mc "Copy Commit"] \
 278                -command [cb _copycommit]
 279        $w.ctxm add separator
 280        $w.ctxm add command \
 281                -label [mc "Find Text..."] \
 282                -accelerator F7 \
 283                -command [list searchbar::show $finder]
 284        $w.ctxm add command \
 285                -label [mc "Goto Line..."] \
 286                -accelerator "Ctrl-G" \
 287                -command [list linebar::show $gotoline]
 288        menu $w.ctxm.enc
 289        build_encoding_menu $w.ctxm.enc [cb _setencoding]
 290        $w.ctxm add cascade \
 291                -label [mc "Encoding"] \
 292                -menu $w.ctxm.enc
 293        $w.ctxm add command \
 294                -label [mc "Do Full Copy Detection"] \
 295                -command [cb _fullcopyblame]
 296        $w.ctxm add separator
 297        $w.ctxm add command \
 298                -label [mc "Show History Context"] \
 299                -command [cb _gitkcommit]
 300        $w.ctxm add command \
 301                -label [mc "Blame Parent Commit"] \
 302                -command [cb _blameparent]
 303
 304        foreach i $w_columns {
 305                for {set g 0} {$g < [llength $group_colors]} {incr g} {
 306                        $i tag conf color$g -background [lindex $group_colors $g]
 307                }
 308
 309                if {$i eq $w_file} {
 310                        $w_file tag raise found
 311                }
 312                $i tag raise sel
 313
 314                $i conf -cursor $cursor_ptr
 315                $i conf -yscrollcommand \
 316                        "[list ::searchbar::scrolled $finder]
 317                         [list many2scrollbar $w_columns yview $w.file_pane.out.sby]"
 318                bind $i <Button-1> "
 319                        [cb _hide_tooltip]
 320                        [cb _click $i @%x,%y]
 321                        focus $i
 322                "
 323                bind $i <Any-Motion>  [cb _show_tooltip $i @%x,%y]
 324                bind $i <Any-Enter>   [cb _hide_tooltip]
 325                bind $i <Any-Leave>   [cb _hide_tooltip]
 326                bind_button3 $i "
 327                        [cb _hide_tooltip]
 328                        set cursorX %x
 329                        set cursorY %y
 330                        set cursorW %W
 331                        tk_popup $w.ctxm %X %Y
 332                "
 333                bind $i <Shift-Tab> "[list focus $w_cviewer];break"
 334                bind $i <Tab>       "[cb _focus_search $w_cviewer];break"
 335        }
 336
 337        foreach i [concat $w_columns $w_cviewer] {
 338                bind $i <Key-Up>        {catch {%W yview scroll -1 units};break}
 339                bind $i <Key-Down>      {catch {%W yview scroll  1 units};break}
 340                bind $i <Key-Left>      {catch {%W xview scroll -1 units};break}
 341                bind $i <Key-Right>     {catch {%W xview scroll  1 units};break}
 342                bind $i <Key-k>         {catch {%W yview scroll -1 units};break}
 343                bind $i <Key-j>         {catch {%W yview scroll  1 units};break}
 344                bind $i <Key-h>         {catch {%W xview scroll -1 units};break}
 345                bind $i <Key-l>         {catch {%W xview scroll  1 units};break}
 346                bind $i <Control-Key-b> {catch {%W yview scroll -1 pages};break}
 347                bind $i <Control-Key-f> {catch {%W yview scroll  1 pages};break}
 348        }
 349
 350        bind $w_cviewer <Shift-Tab> "[cb _focus_search $w_file];break"
 351        bind $w_cviewer <Tab>       "[list focus $w_file];break"
 352        bind $w_cviewer <Button-1>   [list focus $w_cviewer]
 353        bind $w_file    <Visibility> [cb _focus_search $w_file]
 354        bind $top       <F7>         [list searchbar::show $finder]
 355        bind $top       <Escape>     [list searchbar::hide $finder]
 356        bind $top       <F3>         [list searchbar::find_next $finder]
 357        bind $top       <Shift-F3>   [list searchbar::find_prev $finder]
 358        bind $top    <Control-Key-g> [list linebar::show $gotoline]
 359        catch { bind $top <Shift-Key-XF86_Switch_VT_3> [list searchbar::find_prev $finder] }
 360
 361        grid configure $w.header -sticky ew
 362        grid configure $w.file_pane -sticky nsew
 363        grid configure $w.status -sticky ew
 364        grid columnconfigure $top 0 -weight 1
 365        grid rowconfigure $top 0 -weight 0
 366        grid rowconfigure $top 1 -weight 1
 367        grid rowconfigure $top 2 -weight 0
 368
 369        set req_w [winfo reqwidth  $top]
 370        set req_h [winfo reqheight $top]
 371        set scr_w [expr {[winfo screenwidth $top] - 40}]
 372        set scr_h [expr {[winfo screenheight $top] - 120}]
 373        set opt_w [expr {$font_w * (80 + 5*3 + 3)}]
 374        if {$req_w < $opt_w} {set req_w $opt_w}
 375        if {$req_w > $scr_w} {set req_w $scr_w}
 376        set opt_h [expr {$req_w*4/3}]
 377        if {$req_h < $scr_h} {set req_h $scr_h}
 378        if {$req_h > $opt_h} {set req_h $opt_h}
 379        set g "${req_w}x${req_h}"
 380        wm geometry $top $g
 381        update
 382
 383        set old_height [winfo height $w.file_pane]
 384        $w.file_pane sash place 0 \
 385                [lindex [$w.file_pane sash coord 0] 0] \
 386                [expr {int($old_height * 0.80)}]
 387        bind $w.file_pane <Configure> \
 388        "if {{$w.file_pane} eq {%W}} {[cb _resize %h]}"
 389
 390        wm protocol $top WM_DELETE_WINDOW "destroy $top"
 391        bind $top <Destroy> [cb _handle_destroy %W]
 392
 393        _load $this $i_jump
 394}
 395
 396method _focus_search {win} {
 397        if {[searchbar::visible $finder]} {
 398                focus [searchbar::editor $finder]
 399        } else {
 400                focus $win
 401        }
 402}
 403
 404method _handle_destroy {win} {
 405        if {$win eq $w} {
 406                _kill $this
 407                delete_this
 408        }
 409}
 410
 411method _kill {} {
 412        if {$current_fd ne {}} {
 413                kill_file_process $current_fd
 414                catch {close $current_fd}
 415                set current_fd {}
 416        }
 417}
 418
 419method _load {jump} {
 420        variable group_colors
 421
 422        _hide_tooltip $this
 423
 424        if {$total_lines != 0 || $current_fd ne {}} {
 425                _kill $this
 426
 427                foreach i $w_columns {
 428                        $i conf -state normal
 429                        $i delete 0.0 end
 430                        foreach g [$i tag names] {
 431                                if {[regexp {^g[0-9a-f]{40}$} $g]} {
 432                                        $i tag delete $g
 433                                }
 434                        }
 435                        $i conf -state disabled
 436                }
 437
 438                $w_cviewer conf -state normal
 439                $w_cviewer delete 0.0 end
 440                $w_cviewer conf -state disabled
 441
 442                set highlight_line -1
 443                set highlight_column {}
 444                set highlight_commit {}
 445                set total_lines 0
 446        }
 447
 448        if {$history eq {}} {
 449                $w_back conf -state disabled
 450        } else {
 451                $w_back conf -state normal
 452        }
 453
 454        # Index 0 is always empty.  There is never line 0 as
 455        # we use only 1 based lines, as that matches both with
 456        # git-blame output and with Tk's text widget.
 457        #
 458        set amov_data [list [list]]
 459        set asim_data [list [list]]
 460
 461        $status show [mc "Reading %s..." "$commit:[escape_path $path]"]
 462        $w_path conf -text [escape_path $path]
 463
 464        set do_textconv 0
 465        if {![is_config_false gui.textconv] && [git-version >= 1.7.2]} {
 466                set filter [gitattr $path diff set]
 467                set textconv [get_config [join [list diff $filter textconv] .]]
 468                if {$filter ne {set} && $textconv ne {}} {
 469                        set do_textconv 1
 470                }
 471        }
 472        if {$commit eq {}} {
 473                if {$do_textconv ne 0} {
 474                        # Run textconv with sh -c "..." to allow it to
 475                        # contain command + arguments. On windows, just
 476                        # call the filter command.
 477                        if {![file executable [shellpath]]} {
 478                                set fd [open |[linsert $textconv end $path] r]
 479                        } else {
 480                                set fd [open |[list [shellpath] -c "$textconv \"\$0\"" $path] r]
 481                        }
 482                } else {
 483                        set fd [open $path r]
 484                }
 485                fconfigure $fd -eofchar {}
 486        } else {
 487                if {$do_textconv ne 0} {
 488                        set fd [git_read cat-file --textconv "$commit:$path"]
 489                } else {
 490                        set fd [git_read cat-file blob "$commit:$path"]
 491                }
 492        }
 493        fconfigure $fd \
 494                -blocking 0 \
 495                -translation lf \
 496                -encoding [get_path_encoding $path]
 497        fileevent $fd readable [cb _read_file $fd $jump]
 498        set current_fd $fd
 499}
 500
 501method _history_menu {} {
 502        set m $w.backmenu
 503        if {[winfo exists $m]} {
 504                $m delete 0 end
 505        } else {
 506                menu $m -tearoff 0
 507        }
 508
 509        for {set i [expr {[llength $history] - 1}]
 510                } {$i >= 0} {incr i -1} {
 511                set e [lindex $history $i]
 512                set c [lindex $e 0]
 513                set f [lindex $e 1]
 514
 515                if {[regexp {^[0-9a-f]{40}$} $c]} {
 516                        set t [string range $c 0 8]...
 517                } elseif {$c eq {}} {
 518                        set t {Working Directory}
 519                } else {
 520                        set t $c
 521                }
 522                if {![catch {set summary $header($c,summary)}]} {
 523                        append t " $summary"
 524                        if {[string length $t] > 70} {
 525                                set t [string range $t 0 66]...
 526                        }
 527                }
 528
 529                $m add command -label $t -command [cb _goback $i]
 530        }
 531        set X [winfo rootx $w_back]
 532        set Y [expr {[winfo rooty $w_back] + [winfo height $w_back]}]
 533        tk_popup $m $X $Y
 534}
 535
 536method _goback {i} {
 537        set dat [lindex $history $i]
 538        set history [lrange $history 0 [expr {$i - 1}]]
 539        set commit [lindex $dat 0]
 540        set path [lindex $dat 1]
 541        _load $this [lrange $dat 2 5]
 542}
 543
 544method _read_file {fd jump} {
 545        if {$fd ne $current_fd} {
 546                catch {close $fd}
 547                return
 548        }
 549
 550        foreach i $w_columns {$i conf -state normal}
 551        while {[gets $fd line] >= 0} {
 552                regsub "\r\$" $line {} line
 553                incr total_lines
 554                lappend amov_data {}
 555                lappend asim_data {}
 556
 557                if {$total_lines > 1} {
 558                        foreach i $w_columns {$i insert end "\n"}
 559                }
 560
 561                $w_line insert end "$total_lines" linenumber
 562                $w_file insert end "$line"
 563        }
 564
 565        set ln_wc [expr {[string length $total_lines] + 2}]
 566        if {[$w_line cget -width] < $ln_wc} {
 567                $w_line conf -width $ln_wc
 568        }
 569
 570        foreach i $w_columns {$i conf -state disabled}
 571
 572        if {[eof $fd]} {
 573                close $fd
 574
 575                # If we don't force Tk to update the widgets *right now*
 576                # none of our jump commands will cause a change in the UI.
 577                #
 578                update
 579
 580                if {[llength $jump] == 1} {
 581                        set highlight_line [lindex $jump 0]
 582                        $w_file see "$highlight_line.0"
 583                } elseif {[llength $jump] == 4} {
 584                        set highlight_column [lindex $jump 0]
 585                        set highlight_line [lindex $jump 1]
 586                        $w_file xview moveto [lindex $jump 2]
 587                        $w_file yview moveto [lindex $jump 3]
 588                }
 589
 590                _exec_blame $this $w_asim @asim_data \
 591                        [list] \
 592                        [mc "Loading copy/move tracking annotations..."]
 593        }
 594} ifdeleted { catch {close $fd} }
 595
 596method _exec_blame {cur_w cur_d options cur_s} {
 597        lappend options --incremental --encoding=utf-8
 598        if {$commit eq {}} {
 599                lappend options --contents $path
 600        } else {
 601                lappend options $commit
 602        }
 603        lappend options -- $path
 604        set fd [eval git_read --nice blame $options]
 605        fconfigure $fd -blocking 0 -translation lf -encoding utf-8
 606        fileevent $fd readable [cb _read_blame $fd $cur_w $cur_d]
 607        set current_fd $fd
 608        set blame_lines 0
 609
 610        $status start \
 611                $cur_s \
 612                [mc "lines annotated"]
 613}
 614
 615method _read_blame {fd cur_w cur_d} {
 616        upvar #0 $cur_d line_data
 617        variable group_colors
 618
 619        if {$fd ne $current_fd} {
 620                catch {close $fd}
 621                return
 622        }
 623
 624        $cur_w conf -state normal
 625        while {[gets $fd line] >= 0} {
 626                if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
 627                        cmit original_line final_line line_count]} {
 628                        set r_commit     $cmit
 629                        set r_orig_line  $original_line
 630                        set r_final_line $final_line
 631                        set r_line_count $line_count
 632                } elseif {[string match {filename *} $line]} {
 633                        set file [string range $line 9 end]
 634                        set n    $r_line_count
 635                        set lno  $r_final_line
 636                        set oln  $r_orig_line
 637                        set cmit $r_commit
 638
 639                        if {[regexp {^0{40}$} $cmit]} {
 640                                set commit_abbr work
 641                                set commit_type curr_commit
 642                        } elseif {$cmit eq $commit} {
 643                                set commit_abbr this
 644                                set commit_type curr_commit
 645                        } else {
 646                                set commit_type prior_commit
 647                                set commit_abbr [string range $cmit 0 3]
 648                        }
 649
 650                        set author_abbr {}
 651                        set a_name {}
 652                        catch {set a_name $header($cmit,author)}
 653                        while {$a_name ne {}} {
 654                                if {$author_abbr ne {}
 655                                        && [string index $a_name 0] eq {'}} {
 656                                        regsub {^'[^']+'\s+} $a_name {} a_name
 657                                }
 658                                if {![regexp {^([[:upper:]])} $a_name _a]} break
 659                                append author_abbr $_a
 660                                unset _a
 661                                if {![regsub \
 662                                        {^[[:upper:]][^\s]*\s+} \
 663                                        $a_name {} a_name ]} break
 664                        }
 665                        if {$author_abbr eq {}} {
 666                                set author_abbr { |}
 667                        } else {
 668                                set author_abbr [string range $author_abbr 0 3]
 669                        }
 670                        unset a_name
 671
 672                        set first_lno $lno
 673                        while {
 674                           $first_lno > 1
 675                        && $cmit eq [lindex $line_data [expr {$first_lno - 1}] 0]
 676                        && $file eq [lindex $line_data [expr {$first_lno - 1}] 1]
 677                        } {
 678                                incr first_lno -1
 679                        }
 680
 681                        set color {}
 682                        if {$first_lno < $lno} {
 683                                foreach g [$w_file tag names $first_lno.0] {
 684                                        if {[regexp {^color[0-9]+$} $g]} {
 685                                                set color $g
 686                                                break
 687                                        }
 688                                }
 689                        } else {
 690                                set i [lsort [concat \
 691                                        [$w_file tag names "[expr {$first_lno - 1}].0"] \
 692                                        [$w_file tag names "[expr {$lno + $n}].0"] \
 693                                        ]]
 694                                for {set g 0} {$g < [llength $group_colors]} {incr g} {
 695                                        if {[lsearch -sorted -exact $i color$g] == -1} {
 696                                                set color color$g
 697                                                break
 698                                        }
 699                                }
 700                        }
 701                        if {$color eq {}} {
 702                                set color color0
 703                        }
 704
 705                        while {$n > 0} {
 706                                set lno_e "$lno.0 lineend + 1c"
 707                                if {[lindex $line_data $lno] ne {}} {
 708                                        set g [lindex $line_data $lno 0]
 709                                        foreach i $w_columns {
 710                                                $i tag remove g$g $lno.0 $lno_e
 711                                        }
 712                                }
 713                                lset line_data $lno [list $cmit $file $oln]
 714
 715                                $cur_w delete $lno.0 "$lno.0 lineend"
 716                                if {$lno == $first_lno} {
 717                                        $cur_w insert $lno.0 $commit_abbr $commit_type
 718                                } elseif {$lno == [expr {$first_lno + 1}]} {
 719                                        $cur_w insert $lno.0 $author_abbr author_abbr
 720                                } else {
 721                                        $cur_w insert $lno.0 { |}
 722                                }
 723
 724                                foreach i $w_columns {
 725                                        if {$cur_w eq $w_amov} {
 726                                                for {set g 0} \
 727                                                        {$g < [llength $group_colors]} \
 728                                                        {incr g} {
 729                                                        $i tag remove color$g $lno.0 $lno_e
 730                                                }
 731                                                $i tag add $color $lno.0 $lno_e
 732                                        }
 733                                        $i tag add g$cmit $lno.0 $lno_e
 734                                }
 735
 736                                if {$highlight_column eq $cur_w} {
 737                                        if {$highlight_line == -1
 738                                         && [lindex [$w_file yview] 0] == 0} {
 739                                                $w_file see $lno.0
 740                                                set highlight_line $lno
 741                                        }
 742                                        if {$highlight_line == $lno} {
 743                                                _showcommit $this $cur_w $lno
 744                                        }
 745                                }
 746
 747                                incr n -1
 748                                incr lno
 749                                incr oln
 750                                incr blame_lines
 751                        }
 752
 753                        while {
 754                           $cmit eq [lindex $line_data $lno 0]
 755                        && $file eq [lindex $line_data $lno 1]
 756                        } {
 757                                $cur_w delete $lno.0 "$lno.0 lineend"
 758
 759                                if {$lno == $first_lno} {
 760                                        $cur_w insert $lno.0 $commit_abbr $commit_type
 761                                } elseif {$lno == [expr {$first_lno + 1}]} {
 762                                        $cur_w insert $lno.0 $author_abbr author_abbr
 763                                } else {
 764                                        $cur_w insert $lno.0 { |}
 765                                }
 766
 767                                if {$cur_w eq $w_amov} {
 768                                        foreach i $w_columns {
 769                                                for {set g 0} \
 770                                                        {$g < [llength $group_colors]} \
 771                                                        {incr g} {
 772                                                        $i tag remove color$g $lno.0 $lno_e
 773                                                }
 774                                                $i tag add $color $lno.0 $lno_e
 775                                        }
 776                                }
 777
 778                                incr lno
 779                        }
 780
 781                } elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
 782                        set header($r_commit,$key) $data
 783                }
 784        }
 785        $cur_w conf -state disabled
 786
 787        if {[eof $fd]} {
 788                close $fd
 789                if {$cur_w eq $w_asim} {
 790                        # Switches for original location detection
 791                        set threshold [get_config gui.copyblamethreshold]
 792                        set original_options [list "-C$threshold"]
 793
 794                        if {![is_config_true gui.fastcopyblame]} {
 795                                # thorough copy search; insert before the threshold
 796                                set original_options [linsert $original_options 0 -C]
 797                        }
 798                        if {[git-version >= 1.5.3]} {
 799                                lappend original_options -w ; # ignore indentation changes
 800                        }
 801
 802                        _exec_blame $this $w_amov @amov_data \
 803                                $original_options \
 804                                [mc "Loading original location annotations..."]
 805                } else {
 806                        set current_fd {}
 807                        $status stop [mc "Annotation complete."]
 808                }
 809        } else {
 810                $status update $blame_lines $total_lines
 811        }
 812} ifdeleted { catch {close $fd} }
 813
 814method _find_commit_bound {data_list start_idx delta} {
 815        upvar #0 $data_list line_data
 816        set pos $start_idx
 817        set limit       [expr {[llength $line_data] - 1}]
 818        set base_commit [lindex $line_data $pos 0]
 819
 820        while {$pos > 0 && $pos < $limit} {
 821                set new_pos [expr {$pos + $delta}]
 822                if {[lindex $line_data $new_pos 0] ne $base_commit} {
 823                        return $pos
 824                }
 825
 826                set pos $new_pos
 827        }
 828
 829        return $pos
 830}
 831
 832method _fullcopyblame {} {
 833        if {$current_fd ne {}} {
 834                tk_messageBox \
 835                        -icon error \
 836                        -type ok \
 837                        -title [mc "Busy"] \
 838                        -message [mc "Annotation process is already running."]
 839
 840                return
 841        }
 842
 843        # Switches for original location detection
 844        set threshold [get_config gui.copyblamethreshold]
 845        set original_options [list -C -C "-C$threshold"]
 846
 847        if {[git-version >= 1.5.3]} {
 848                lappend original_options -w ; # ignore indentation changes
 849        }
 850
 851        # Find the line range
 852        set pos @$::cursorX,$::cursorY
 853        set lno [lindex [split [$::cursorW index $pos] .] 0]
 854        set min_amov_lno [_find_commit_bound $this @amov_data $lno -1]
 855        set max_amov_lno [_find_commit_bound $this @amov_data $lno 1]
 856        set min_asim_lno [_find_commit_bound $this @asim_data $lno -1]
 857        set max_asim_lno [_find_commit_bound $this @asim_data $lno 1]
 858
 859        if {$min_asim_lno < $min_amov_lno} {
 860                set min_amov_lno $min_asim_lno
 861        }
 862
 863        if {$max_asim_lno > $max_amov_lno} {
 864                set max_amov_lno $max_asim_lno
 865        }
 866
 867        lappend original_options -L "$min_amov_lno,$max_amov_lno"
 868
 869        # Clear lines
 870        for {set i $min_amov_lno} {$i <= $max_amov_lno} {incr i} {
 871                lset amov_data $i [list ]
 872        }
 873
 874        # Start the back-end process
 875        _exec_blame $this $w_amov @amov_data \
 876                $original_options \
 877                [mc "Running thorough copy detection..."]
 878}
 879
 880method _click {cur_w pos} {
 881        set lno [lindex [split [$cur_w index $pos] .] 0]
 882        _showcommit $this $cur_w $lno
 883}
 884
 885method _setencoding {enc} {
 886        force_path_encoding $path $enc
 887        _load $this [list \
 888                $highlight_column \
 889                $highlight_line \
 890                [lindex [$w_file xview] 0] \
 891                [lindex [$w_file yview] 0] \
 892                ]
 893}
 894
 895method _load_commit {cur_w cur_d pos} {
 896        upvar #0 $cur_d line_data
 897        set lno [lindex [split [$cur_w index $pos] .] 0]
 898        set dat [lindex $line_data $lno]
 899        if {$dat ne {}} {
 900                _load_new_commit $this  \
 901                        [lindex $dat 0] \
 902                        [lindex $dat 1] \
 903                        [list [lindex $dat 2]]
 904        }
 905}
 906
 907method _load_new_commit {new_commit new_path jump} {
 908        lappend history [list \
 909                $commit $path \
 910                $highlight_column \
 911                $highlight_line \
 912                [lindex [$w_file xview] 0] \
 913                [lindex [$w_file yview] 0] \
 914                ]
 915
 916        set commit $new_commit
 917        set path   $new_path
 918        _load $this $jump
 919}
 920
 921method _showcommit {cur_w lno} {
 922        global repo_config
 923        variable active_color
 924
 925        if {$highlight_commit ne {}} {
 926                foreach i $w_columns {
 927                        $i tag conf g$highlight_commit -background {}
 928                        $i tag lower g$highlight_commit
 929                }
 930        }
 931
 932        if {$cur_w eq $w_asim} {
 933                set dat [lindex $asim_data $lno]
 934                set highlight_column $w_asim
 935        } else {
 936                set dat [lindex $amov_data $lno]
 937                set highlight_column $w_amov
 938        }
 939
 940        $w_cviewer conf -state normal
 941        $w_cviewer delete 0.0 end
 942
 943        if {$dat eq {}} {
 944                set cmit {}
 945                $w_cviewer insert end [mc "Loading annotation..."] still_loading
 946        } else {
 947                set cmit [lindex $dat 0]
 948                set file [lindex $dat 1]
 949
 950                foreach i $w_columns {
 951                        $i tag conf g$cmit -background $active_color
 952                        $i tag raise g$cmit
 953                        if {$i eq $w_file} {
 954                                $w_file tag raise found
 955                        }
 956                        $i tag raise sel
 957                }
 958
 959                set author_name {}
 960                set author_email {}
 961                set author_time {}
 962                catch {set author_name $header($cmit,author)}
 963                catch {set author_email $header($cmit,author-mail)}
 964                catch {set author_time [format_date $header($cmit,author-time)]}
 965
 966                set committer_name {}
 967                set committer_email {}
 968                set committer_time {}
 969                catch {set committer_name $header($cmit,committer)}
 970                catch {set committer_email $header($cmit,committer-mail)}
 971                catch {set committer_time [format_date $header($cmit,committer-time)]}
 972
 973                if {[catch {set msg $header($cmit,message)}]} {
 974                        set msg {}
 975                        catch {
 976                                set fd [git_read cat-file commit $cmit]
 977                                fconfigure $fd -encoding binary -translation lf
 978                                # By default commits are assumed to be in utf-8
 979                                set enc utf-8
 980                                while {[gets $fd line] > 0} {
 981                                        if {[string match {encoding *} $line]} {
 982                                                set enc [string tolower [string range $line 9 end]]
 983                                        }
 984                                }
 985                                set msg [read $fd]
 986                                close $fd
 987
 988                                set enc [tcl_encoding $enc]
 989                                if {$enc ne {}} {
 990                                        set msg [encoding convertfrom $enc $msg]
 991                                }
 992                                set msg [string trim $msg]
 993                        }
 994                        set header($cmit,message) $msg
 995                }
 996
 997                $w_cviewer insert end "commit $cmit\n" header_key
 998                $w_cviewer insert end [strcat [mc "Author:"] "\t"] header_key
 999                $w_cviewer insert end "$author_name $author_email" header_val
1000                $w_cviewer insert end "  $author_time\n" header_val
1001
1002                $w_cviewer insert end [strcat [mc "Committer:"] "\t"] header_key
1003                $w_cviewer insert end "$committer_name $committer_email" header_val
1004                $w_cviewer insert end "  $committer_time\n" header_val
1005
1006                if {$file ne $path} {
1007                        $w_cviewer insert end [strcat [mc "Original File:"] "\t"] header_key
1008                        $w_cviewer insert end "[escape_path $file]\n" header_val
1009                }
1010
1011                $w_cviewer insert end "\n$msg"
1012        }
1013        $w_cviewer conf -state disabled
1014
1015        set highlight_line $lno
1016        set highlight_commit $cmit
1017
1018        if {[lsearch -exact $tooltip_commit $highlight_commit] != -1} {
1019                _hide_tooltip $this
1020        }
1021}
1022
1023method _get_click_amov_info {} {
1024        set pos @$::cursorX,$::cursorY
1025        set lno [lindex [split [$::cursorW index $pos] .] 0]
1026        return [lindex $amov_data $lno]
1027}
1028
1029method _copycommit {} {
1030        set dat [_get_click_amov_info $this]
1031        if {$dat ne {}} {
1032                clipboard clear
1033                clipboard append \
1034                        -format STRING \
1035                        -type STRING \
1036                        -- [lindex $dat 0]
1037        }
1038}
1039
1040method _format_offset_date {base offset} {
1041        set exval [expr {$base + $offset*24*60*60}]
1042        return [clock format $exval -format {%Y-%m-%d}]
1043}
1044
1045method _gitkcommit {} {
1046        global nullid
1047
1048        set dat [_get_click_amov_info $this]
1049        if {$dat ne {}} {
1050                set cmit [lindex $dat 0]
1051
1052                # If the line belongs to the working copy, use HEAD instead
1053                if {$cmit eq $nullid} {
1054                        if {[catch {set cmit [git rev-parse --verify HEAD]} err]} {
1055                                error_popup [strcat [mc "Cannot find HEAD commit:"] "\n\n$err"]
1056                                return;
1057                        }
1058                }
1059
1060                set radius [get_config gui.blamehistoryctx]
1061                set cmdline [list --select-commit=$cmit]
1062
1063                if {$radius > 0} {
1064                        set author_time {}
1065                        set committer_time {}
1066
1067                        catch {set author_time $header($cmit,author-time)}
1068                        catch {set committer_time $header($cmit,committer-time)}
1069
1070                        if {$committer_time eq {}} {
1071                                set committer_time $author_time
1072                        }
1073
1074                        set after_time [_format_offset_date $this $committer_time [expr {-$radius}]]
1075                        set before_time [_format_offset_date $this $committer_time $radius]
1076
1077                        lappend cmdline --after=$after_time --before=$before_time
1078                }
1079
1080                lappend cmdline $cmit
1081
1082                set base_rev "HEAD"
1083                if {$commit ne {}} {
1084                        set base_rev $commit
1085                }
1086
1087                if {$base_rev ne $cmit} {
1088                        lappend cmdline $base_rev
1089                }
1090
1091                do_gitk $cmdline
1092        }
1093}
1094
1095method _blameparent {} {
1096        global nullid
1097
1098        set dat [_get_click_amov_info $this]
1099        if {$dat ne {}} {
1100                set cmit [lindex $dat 0]
1101                set new_path [lindex $dat 1]
1102
1103                # Allow using Blame Parent on lines modified in the working copy
1104                if {$cmit eq $nullid} {
1105                        set parent_ref "HEAD"
1106                } else {
1107                        set parent_ref "$cmit^"
1108                }
1109                if {[catch {set cparent [git rev-parse --verify $parent_ref]} err]} {
1110                        error_popup [strcat [mc "Cannot find parent commit:"] "\n\n$err"]
1111                        return;
1112                }
1113
1114                _kill $this
1115
1116                # Generate a diff between the commit and its parent,
1117                # and use the hunks to update the line number.
1118                # Request zero context to simplify calculations.
1119                if {$cmit eq $nullid} {
1120                        set diffcmd [list diff-index --unified=0 $cparent -- $new_path]
1121                } else {
1122                        set diffcmd [list diff-tree --unified=0 $cparent $cmit -- $new_path]
1123                }
1124                if {[catch {set fd [eval git_read $diffcmd]} err]} {
1125                        $status stop [mc "Unable to display parent"]
1126                        error_popup [strcat [mc "Error loading diff:"] "\n\n$err"]
1127                        return
1128                }
1129
1130                set r_orig_line [lindex $dat 2]
1131
1132                fconfigure $fd \
1133                        -blocking 0 \
1134                        -encoding binary \
1135                        -translation binary
1136                fileevent $fd readable [cb _read_diff_load_commit \
1137                        $fd $cparent $new_path $r_orig_line]
1138                set current_fd $fd
1139        }
1140}
1141
1142method _read_diff_load_commit {fd cparent new_path tline} {
1143        if {$fd ne $current_fd} {
1144                catch {close $fd}
1145                return
1146        }
1147
1148        while {[gets $fd line] >= 0} {
1149                if {[regexp {^@@ -(\d+)(,(\d+))? \+(\d+)(,(\d+))? @@} $line line \
1150                        old_line osz old_size new_line nsz new_size]} {
1151
1152                        if {$osz eq {}} { set old_size 1 }
1153                        if {$nsz eq {}} { set new_size 1 }
1154
1155                        if {$new_line <= $tline} {
1156                                if {[expr {$new_line + $new_size}] > $tline} {
1157                                        # Target line within the hunk
1158                                        set line_shift [expr {
1159                                                ($new_size-$old_size)*($tline-$new_line)/$new_size
1160                                                }]
1161                                } else {
1162                                        set line_shift [expr {$new_size-$old_size}]
1163                                }
1164
1165                                set r_orig_line [expr {$r_orig_line - $line_shift}]
1166                        }
1167                }
1168        }
1169
1170        if {[eof $fd]} {
1171                close $fd;
1172                set current_fd {}
1173
1174                _load_new_commit $this  \
1175                        $cparent        \
1176                        $new_path       \
1177                        [list $r_orig_line]
1178        }
1179} ifdeleted { catch {close $fd} }
1180
1181method _show_tooltip {cur_w pos} {
1182        if {$tooltip_wm ne {}} {
1183                _open_tooltip $this $cur_w
1184        } elseif {$tooltip_timer eq {}} {
1185                set tooltip_timer [after 1000 [cb _open_tooltip $cur_w]]
1186        }
1187}
1188
1189method _open_tooltip {cur_w} {
1190        set tooltip_timer {}
1191        set pos_x [winfo pointerx $cur_w]
1192        set pos_y [winfo pointery $cur_w]
1193        if {[winfo containing $pos_x $pos_y] ne $cur_w} {
1194                _hide_tooltip $this
1195                return
1196        }
1197
1198        if {$tooltip_wm ne "$cur_w.tooltip"} {
1199                _hide_tooltip $this
1200
1201                set tooltip_wm [toplevel $cur_w.tooltip -borderwidth 1]
1202                wm overrideredirect $tooltip_wm 1
1203                wm transient $tooltip_wm [winfo toplevel $cur_w]
1204                set tooltip_t $tooltip_wm.label
1205                text $tooltip_t \
1206                        -takefocus 0 \
1207                        -highlightthickness 0 \
1208                        -relief flat \
1209                        -borderwidth 0 \
1210                        -wrap none \
1211                        -background lightyellow \
1212                        -foreground black
1213                $tooltip_t tag conf section_header -font font_uibold
1214                pack $tooltip_t
1215        } else {
1216                $tooltip_t conf -state normal
1217                $tooltip_t delete 0.0 end
1218        }
1219
1220        set pos @[join [list \
1221                [expr {$pos_x - [winfo rootx $cur_w]}] \
1222                [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
1223        set lno [lindex [split [$cur_w index $pos] .] 0]
1224        if {$cur_w eq $w_amov} {
1225                set dat [lindex $amov_data $lno]
1226                set org {}
1227        } else {
1228                set dat [lindex $asim_data $lno]
1229                set org [lindex $amov_data $lno]
1230        }
1231
1232        if {$dat eq {}} {
1233                _hide_tooltip $this
1234                return
1235        }
1236
1237        set cmit [lindex $dat 0]
1238        set tooltip_commit [list $cmit]
1239
1240        set author_name {}
1241        set summary     {}
1242        set author_time {}
1243        catch {set author_name $header($cmit,author)}
1244        catch {set summary     $header($cmit,summary)}
1245        catch {set author_time [format_date $header($cmit,author-time)]}
1246
1247        $tooltip_t insert end "commit $cmit\n"
1248        $tooltip_t insert end "$author_name  $author_time\n"
1249        $tooltip_t insert end "$summary"
1250
1251        if {$org ne {} && [lindex $org 0] ne $cmit} {
1252                set save [$tooltip_t get 0.0 end]
1253                $tooltip_t delete 0.0 end
1254
1255                set cmit [lindex $org 0]
1256                set file [lindex $org 1]
1257                lappend tooltip_commit $cmit
1258
1259                set author_name {}
1260                set summary     {}
1261                set author_time {}
1262                catch {set author_name $header($cmit,author)}
1263                catch {set summary     $header($cmit,summary)}
1264                catch {set author_time [format_date $header($cmit,author-time)]}
1265
1266                $tooltip_t insert end [strcat [mc "Originally By:"] "\n"] section_header
1267                $tooltip_t insert end "commit $cmit\n"
1268                $tooltip_t insert end "$author_name  $author_time\n"
1269                $tooltip_t insert end "$summary\n"
1270
1271                if {$file ne $path} {
1272                        $tooltip_t insert end [strcat [mc "In File:"] " "] section_header
1273                        $tooltip_t insert end "$file\n"
1274                }
1275
1276                $tooltip_t insert end "\n"
1277                $tooltip_t insert end [strcat [mc "Copied Or Moved Here By:"] "\n"] section_header
1278                $tooltip_t insert end $save
1279        }
1280
1281        $tooltip_t conf -state disabled
1282        _position_tooltip $this
1283
1284        # On MacOS raising a window causes it to acquire focus.
1285        # Tk 8.5 on MacOS seems to properly support wm transient,
1286        # so we can safely counter the effect there.
1287        if {$::have_tk85 && [is_MacOSX]} {
1288                update
1289                if {$w eq {}} {
1290                        raise .
1291                } else {
1292                        raise $w
1293                }
1294        }
1295}
1296
1297method _position_tooltip {} {
1298        set max_h [lindex [split [$tooltip_t index end] .] 0]
1299        set max_w 0
1300        for {set i 1} {$i <= $max_h} {incr i} {
1301                set c [lindex [split [$tooltip_t index "$i.0 lineend"] .] 1]
1302                if {$c > $max_w} {set max_w $c}
1303        }
1304        $tooltip_t conf -width $max_w -height $max_h
1305
1306        set req_w [winfo reqwidth  $tooltip_t]
1307        set req_h [winfo reqheight $tooltip_t]
1308        set pos_x [expr {[winfo pointerx .] +  5}]
1309        set pos_y [expr {[winfo pointery .] + 10}]
1310
1311        set g "${req_w}x${req_h}"
1312        if {[tk windowingsystem] eq "win32" || $pos_x >= 0} {append g +}
1313        append g $pos_x
1314        if {[tk windowingsystem] eq "win32" || $pos_y >= 0} {append g +}
1315        append g $pos_y
1316
1317        wm geometry $tooltip_wm $g
1318        if {![is_MacOSX]} {
1319                raise $tooltip_wm
1320        }
1321}
1322
1323method _hide_tooltip {} {
1324        if {$tooltip_wm ne {}} {
1325                destroy $tooltip_wm
1326                set tooltip_wm {}
1327                set tooltip_commit {}
1328        }
1329        if {$tooltip_timer ne {}} {
1330                after cancel $tooltip_timer
1331                set tooltip_timer {}
1332        }
1333}
1334
1335method _resize {new_height} {
1336        set diff [expr {$new_height - $old_height}]
1337        if {$diff == 0} return
1338
1339        set my [expr {[winfo height $w.file_pane] - 25}]
1340        set o [$w.file_pane sash coord 0]
1341        set ox [lindex $o 0]
1342        set oy [expr {[lindex $o 1] + $diff}]
1343        if {$oy < 0}   {set oy 0}
1344        if {$oy > $my} {set oy $my}
1345        $w.file_pane sash place 0 $ox $oy
1346
1347        set old_height $new_height
1348}
1349
1350}