git-gui: Improve our labeling of blame annotation types
[gitweb.git] / lib / blame.tcl
index 86160092c662673dfe0d852228097d9a68ed91df..0400d6effeca05aae2c0e49fd4036acbb93968aa 100644 (file)
 
 class blame {
 
-field commit  ; # input commit to blame
-field path    ; # input filename to view in $commit
+image create photo ::blame::img_back_arrow -data {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}
+
+# Persistant data (survives loads)
+#
+field history {}; # viewer history: {commit path}
+field header    ; # array commit,key -> header field
+
+# Tk UI control paths
+#
+field w          ; # top window in this viewer
+field w_back     ; # our back button
+field w_path     ; # label showing the current file path
+field w_columns  ; # list of all column widgets in the viewer
+field w_line     ; # text column: all line numbers
+field w_amov     ; # text column: annotations + move tracking
+field w_asim     ; # text column: annotations (simple computation)
+field w_file     ; # text column: actual file data
+field w_cviewer  ; # pane showing commit message
+field status     ; # text variable bound to status bar
+field old_height ; # last known height of $w.file_pane
+
+# Tk UI colors
+#
+variable active_color #c0edc5
+variable group_colors {
+       #d6d6d6
+       #e1e1e1
+       #ececec
+}
 
-field w
-field w_line
-field w_cgrp
-field w_load
-field w_file
-field w_cmit
-field status
+# Current blame data; cleared/reset on each load
+#
+field commit               ; # input commit to blame
+field path                 ; # input filename to view in $commit
 
-field highlight_line   -1 ; # current line selected
-field highlight_commit {} ; # sha1 of commit selected
+field current_fd        {} ; # background process running
+field highlight_line    -1 ; # current line selected
+field highlight_column  {} ; # current commit column selected
+field highlight_commit  {} ; # sha1 of commit selected
 
 field total_lines       0  ; # total length of file
 field blame_lines       0  ; # number of lines computed
-field commit_count      0  ; # number of commits in $commit_list
-field commit_list      {}  ; # list of commit sha1 in receipt order
-field order                ; # array commit -> receipt order
-field header               ; # array commit,key -> header field
-field line_commit          ; # array line -> sha1 commit
-field line_file            ; # array line -> file name
-
-field r_commit      ; # commit currently being parsed
-field r_orig_line   ; # original line number
-field r_final_line  ; # final line number
-field r_line_count  ; # lines in this region
-
-variable active_color #98e1a0
-variable group_colors {
-       #cbcbcb
-       #e1e1e1
-}
+field amov_data            ; # list of {commit origfile origline}
+field asim_data            ; # list of {commit origfile origline}
+
+field r_commit             ; # commit currently being parsed
+field r_orig_line          ; # original line number
+field r_final_line         ; # final line number
+field r_line_count         ; # lines in this region
+
+field tooltip_wm        {} ; # Current tooltip toplevel, if open
+field tooltip_t         {} ; # Text widget in $tooltip_wm
+field tooltip_timer     {} ; # Current timer event for our tooltip
+field tooltip_commit    {} ; # Commit(s) in tooltip
 
 constructor new {i_commit i_path} {
+       global cursor_ptr
+       variable active_color
+       variable group_colors
+
        set commit $i_commit
        set path   $i_path
 
        make_toplevel top w
        wm title $top "[appname] ([reponame]): File Viewer"
-       set status "Loading $commit:$path..."
 
-       label $w.path -text "$commit:$path" \
+       frame $w.header -background orange
+       label $w.header.commit_l \
+               -text {Commit:} \
+               -background orange \
                -anchor w \
-               -justify left \
-               -borderwidth 1 \
-               -relief sunken \
-               -font font_uibold
-       pack $w.path -side top -fill x
-
-       frame $w.out
-       set w_load $w.out.loaded_t
-       text $w_load \
+               -justify left
+       set w_back $w.header.commit_b
+       label $w_back \
+               -image ::blame::img_back_arrow \
+               -borderwidth 0 \
+               -relief flat \
+               -state disabled \
+               -background orange \
+               -activebackground orange
+       bind $w_back <Button-1> "
+               if {\[$w_back cget -state\] eq {normal}} {
+                       [cb _history_menu]
+               }
+               "
+       label $w.header.commit \
+               -textvariable @commit \
+               -background orange \
+               -anchor w \
+               -justify left
+       label $w.header.path_l \
+               -text {File:} \
+               -background orange \
+               -anchor w \
+               -justify left
+       set w_path $w.header.path
+       label $w_path \
+               -background orange \
+               -anchor w \
+               -justify left
+       pack $w.header.commit_l -side left
+       pack $w_back -side left
+       pack $w.header.commit -side left
+       pack $w_path -fill x -side right
+       pack $w.header.path_l -side right
+
+       panedwindow $w.file_pane -orient vertical
+       frame $w.file_pane.out
+       frame $w.file_pane.cm
+       $w.file_pane add $w.file_pane.out \
+               -sticky nsew \
+               -minsize 100 \
+               -height 100 \
+               -width 100
+       $w.file_pane add $w.file_pane.cm \
+               -sticky nsew \
+               -minsize 25 \
+               -height 25 \
+               -width 100
+
+       set w_line $w.file_pane.out.linenumber_t
+       text $w_line \
+               -takefocus 0 \
+               -highlightthickness 0 \
+               -padx 0 -pady 0 \
                -background white -borderwidth 0 \
                -state disabled \
                -wrap none \
                -height 40 \
-               -width 1 \
+               -width 6 \
                -font font_diff
-       $w_load tag conf annotated -background grey
+       $w_line tag conf linenumber -justify right -rmargin 5
 
-       set w_line $w.out.linenumber_t
-       text $w_line \
+       set w_amov $w.file_pane.out.amove_t
+       text $w_amov \
+               -takefocus 0 \
+               -highlightthickness 0 \
+               -padx 0 -pady 0 \
                -background white -borderwidth 0 \
                -state disabled \
                -wrap none \
                -height 40 \
                -width 5 \
                -font font_diff
-       $w_line tag conf linenumber -justify right
-
-       set w_cgrp $w.out.commit_t
-       text $w_cgrp \
+       $w_amov tag conf author_abbr -justify right -rmargin 5
+       $w_amov tag conf curr_commit
+       $w_amov tag conf prior_commit -foreground blue -underline 1
+       $w_amov tag bind prior_commit \
+               <Button-1> \
+               "[cb _load_commit $w_amov @amov_data @%x,%y];break"
+
+       set w_asim $w.file_pane.out.asimple_t
+       text $w_asim \
+               -takefocus 0 \
+               -highlightthickness 0 \
+               -padx 0 -pady 0 \
                -background white -borderwidth 0 \
                -state disabled \
                -wrap none \
                -height 40 \
                -width 4 \
                -font font_diff
-
-       set w_file $w.out.file_t
+       $w_asim tag conf author_abbr -justify right
+       $w_asim tag conf curr_commit
+       $w_asim tag conf prior_commit -foreground blue -underline 1
+       $w_asim tag bind prior_commit \
+               <Button-1> \
+               "[cb _load_commit $w_asim @asim_data @%x,%y];break"
+
+       set w_file $w.file_pane.out.file_t
        text $w_file \
+               -takefocus 0 \
+               -highlightthickness 0 \
+               -padx 0 -pady 0 \
                -background white -borderwidth 0 \
                -state disabled \
                -wrap none \
                -height 40 \
                -width 80 \
-               -xscrollcommand [list $w.out.sbx set] \
+               -xscrollcommand [list $w.file_pane.out.sbx set] \
                -font font_diff
 
-       scrollbar $w.out.sbx -orient h -command [list $w_file xview]
-       scrollbar $w.out.sby -orient v \
-               -command [list scrollbar2many [list \
-               $w_load \
-               $w_line \
-               $w_cgrp \
-               $w_file \
-               ] yview]
-       grid \
-               $w_cgrp \
-               $w_line \
-               $w_load \
-               $w_file \
-               $w.out.sby \
-               -sticky nsew
-       grid conf $w.out.sbx -column 3 -sticky we
-       grid columnconfigure $w.out 3 -weight 1
-       grid rowconfigure $w.out 0 -weight 1
-       pack $w.out -fill both -expand 1
-
-       label $w.status \
-               -textvariable @status \
-               -anchor w \
-               -justify left \
-               -borderwidth 1 \
-               -relief sunken
-       pack $w.status -side bottom -fill x
-
-       frame $w.cm
-       set w_cmit $w.cm.t
-       text $w_cmit \
+       set w_columns [list $w_amov $w_asim $w_line $w_file]
+
+       scrollbar $w.file_pane.out.sbx \
+               -orient h \
+               -command [list $w_file xview]
+       scrollbar $w.file_pane.out.sby \
+               -orient v \
+               -command [list scrollbar2many $w_columns yview]
+       eval grid $w_columns $w.file_pane.out.sby -sticky nsew
+       grid conf \
+               $w.file_pane.out.sbx \
+               -column [expr {[llength $w_columns] - 1}] \
+               -sticky we
+       grid columnconfigure \
+               $w.file_pane.out \
+               [expr {[llength $w_columns] - 1}] \
+               -weight 1
+       grid rowconfigure $w.file_pane.out 0 -weight 1
+
+       set w_cviewer $w.file_pane.cm.t
+       text $w_cviewer \
                -background white -borderwidth 0 \
                -state disabled \
                -wrap none \
                -height 10 \
                -width 80 \
-               -xscrollcommand [list $w.cm.sbx set] \
-               -yscrollcommand [list $w.cm.sby set] \
+               -xscrollcommand [list $w.file_pane.cm.sbx set] \
+               -yscrollcommand [list $w.file_pane.cm.sby set] \
                -font font_diff
-       scrollbar $w.cm.sbx -orient h -command [list $w_cmit xview]
-       scrollbar $w.cm.sby -orient v -command [list $w_cmit yview]
-       pack $w.cm.sby -side right -fill y
-       pack $w.cm.sbx -side bottom -fill x
-       pack $w_cmit -expand 1 -fill both
-       pack $w.cm -side bottom -fill x
+       $w_cviewer tag conf still_loading \
+               -font font_uiitalic \
+               -justify center
+       $w_cviewer tag conf header_key \
+               -tabs {3c} \
+               -background $active_color \
+               -font font_uibold
+       $w_cviewer tag conf header_val \
+               -background $active_color \
+               -font font_ui
+       $w_cviewer tag raise sel
+       scrollbar $w.file_pane.cm.sbx \
+               -orient h \
+               -command [list $w_cviewer xview]
+       scrollbar $w.file_pane.cm.sby \
+               -orient v \
+               -command [list $w_cviewer yview]
+       pack $w.file_pane.cm.sby -side right -fill y
+       pack $w.file_pane.cm.sbx -side bottom -fill x
+       pack $w_cviewer -expand 1 -fill both
+
+       frame $w.status \
+               -borderwidth 1 \
+               -relief sunken
+       label $w.status.l \
+               -textvariable @status \
+               -anchor w \
+               -justify left
+       pack $w.status.l -side left
 
        menu $w.ctxm -tearoff 0
        $w.ctxm add command \
                -label "Copy Commit" \
                -command [cb _copycommit]
 
-       foreach i [list \
-               $w_cgrp \
-               $w_load \
-               $w_line \
-               $w_file] {
-               $i conf -yscrollcommand \
-                       [list many2scrollbar [list \
-                       $w_cgrp \
-                       $w_load \
-                       $w_line \
-                       $w_file \
-                       ] yview $w.out.sby]
-               bind $i <Button-1> "[cb _click $i @%x,%y]; focus $i"
+       foreach i $w_columns {
+               for {set g 0} {$g < [llength $group_colors]} {incr g} {
+                       $i tag conf color$g -background [lindex $group_colors $g]
+               }
+
+               $i conf -cursor $cursor_ptr
+               $i conf -yscrollcommand [list many2scrollbar \
+                       $w_columns yview $w.file_pane.out.sby]
+               bind $i <Button-1> "
+                       [cb _hide_tooltip]
+                       [cb _click $i @%x,%y]
+                       focus $i
+               "
+               bind $i <Any-Motion>  [cb _show_tooltip $i @%x,%y]
+               bind $i <Any-Enter>   [cb _hide_tooltip]
+               bind $i <Any-Leave>   [cb _hide_tooltip]
                bind_button3 $i "
+                       [cb _hide_tooltip]
                        set cursorX %x
                        set cursorY %y
                        set cursorW %W
@@ -165,12 +274,7 @@ constructor new {i_commit i_path} {
                "
        }
 
-       foreach i [list \
-               $w_cgrp \
-               $w_load \
-               $w_line \
-               $w_file \
-               $w_cmit] {
+       foreach i [concat $w_columns $w_cviewer] {
                bind $i <Key-Up>        {catch {%W yview scroll -1 units};break}
                bind $i <Key-Down>      {catch {%W yview scroll  1 units};break}
                bind $i <Key-Left>      {catch {%W xview scroll -1 units};break}
@@ -183,10 +287,96 @@ constructor new {i_commit i_path} {
                bind $i <Control-Key-f> {catch {%W yview scroll  1 pages};break}
        }
 
-       bind $w_cmit <Button-1> [list focus $w_cmit]
+       bind $w_cviewer <Button-1> [list focus $w_cviewer]
        bind $top <Visibility> [list focus $top]
-       bind $top <Destroy> [list delete_this $this]
+       bind $w_file <Destroy> [list delete_this $this]
+
+       grid configure $w.header -sticky ew
+       grid configure $w.file_pane -sticky nsew
+       grid configure $w.status -sticky ew
+       grid columnconfigure $top 0 -weight 1
+       grid rowconfigure $top 0 -weight 0
+       grid rowconfigure $top 1 -weight 1
+       grid rowconfigure $top 2 -weight 0
+
+       set req_w [winfo reqwidth  $top]
+       set req_h [winfo reqheight $top]
+       if {$req_w < 600} {set req_w 600}
+       if {$req_h < 400} {set req_h 400}
+       set g "${req_w}x${req_h}"
+       wm geometry $top $g
+       update
+
+       set old_height [winfo height $w.file_pane]
+       $w.file_pane sash place 0 \
+               [lindex [$w.file_pane sash coord 0] 0] \
+               [expr {int($old_height * 0.70)}]
+       bind $w.file_pane <Configure> \
+       "if {{$w.file_pane} eq {%W}} {[cb _resize %h]}"
+
+       _load $this {}
+}
+
+method _load {jump} {
+       variable group_colors
+
+       _hide_tooltip $this
+
+       if {$total_lines != 0 || $current_fd ne {}} {
+               if {$current_fd ne {}} {
+                       catch {close $current_fd}
+                       set current_fd {}
+               }
+
+               foreach i $w_columns {
+                       $i conf -state normal
+                       $i delete 0.0 end
+                       foreach g [$i tag names] {
+                               if {[regexp {^g[0-9a-f]{40}$} $g]} {
+                                       $i tag delete $g
+                               }
+                       }
+                       $i conf -state disabled
+               }
+
+               $w_cviewer conf -state normal
+               $w_cviewer delete 0.0 end
+               $w_cviewer conf -state disabled
+
+               set highlight_line -1
+               set highlight_column {}
+               set highlight_commit {}
+               set total_lines 0
+       }
+
+       if {[winfo exists $w.status.c]} {
+               $w.status.c coords bar 0 0 0 20
+       } else {
+               canvas $w.status.c \
+                       -width 100 \
+                       -height [expr {int([winfo reqheight $w.status.l] * 0.6)}] \
+                       -borderwidth 1 \
+                       -relief groove \
+                       -highlightt 0
+               $w.status.c create rectangle 0 0 0 20 -tags bar -fill navy
+               pack $w.status.c -side right
+       }
+
+       if {$history eq {}} {
+               $w_back conf -state disabled
+       } else {
+               $w_back conf -state normal
+       }
+
+       # Index 0 is always empty.  There is never line 0 as
+       # we use only 1 based lines, as that matches both with
+       # git-blame output and with Tk's text widget.
+       #
+       set amov_data [list [list]]
+       set asim_data [list [list]]
 
+       set status "Loading $commit:[escape_path $path]..."
+       $w_path conf -text [escape_path $path]
        if {$commit eq {}} {
                set fd [open $path r]
        } else {
@@ -194,53 +384,133 @@ constructor new {i_commit i_path} {
                set fd [open "| $cmd" r]
        }
        fconfigure $fd -blocking 0 -translation lf -encoding binary
-       fileevent $fd readable [cb _read_file $fd]
+       fileevent $fd readable [cb _read_file $fd $jump]
+       set current_fd $fd
 }
 
-method _read_file {fd} {
-       $w_load conf -state normal
-       $w_cgrp conf -state normal
-       $w_line conf -state normal
-       $w_file conf -state normal
+method _history_menu {} {
+       set m $w.backmenu
+       if {[winfo exists $m]} {
+               $m delete 0 end
+       } else {
+               menu $m -tearoff 0
+       }
+
+       for {set i [expr {[llength $history] - 1}]
+               } {$i >= 0} {incr i -1} {
+               set e [lindex $history $i]
+               set c [lindex $e 0]
+               set f [lindex $e 1]
+
+               if {[regexp {^[0-9a-f]{40}$} $c]} {
+                       set t [string range $c 0 8]...
+               } elseif {$c eq {}} {
+                       set t {Working Directory}
+               } else {
+                       set t $c
+               }
+               if {![catch {set summary $header($c,summary)}]} {
+                       append t " $summary"
+                       if {[string length $t] > 70} {
+                               set t [string range $t 0 66]...
+                       }
+               }
+
+               $m add command -label $t -command [cb _goback $i]
+       }
+       set X [winfo rootx $w_back]
+       set Y [expr {[winfo rooty $w_back] + [winfo height $w_back]}]
+       tk_popup $m $X $Y
+}
+
+method _goback {i} {
+       set dat [lindex $history $i]
+       set history [lrange $history 0 [expr {$i - 1}]]
+       set commit [lindex $dat 0]
+       set path [lindex $dat 1]
+       _load $this [lrange $dat 2 5]
+}
+
+method _read_file {fd jump} {
+       if {$fd ne $current_fd} {
+               catch {close $fd}
+               return
+       }
+
+       foreach i $w_columns {$i conf -state normal}
        while {[gets $fd line] >= 0} {
                regsub "\r\$" $line {} line
                incr total_lines
+               lappend amov_data {}
+               lappend asim_data {}
 
                if {$total_lines > 1} {
-                       $w_load insert end "\n"
-                       $w_cgrp insert end "\n"
-                       $w_line insert end "\n"
-                       $w_file insert end "\n"
+                       foreach i $w_columns {$i insert end "\n"}
                }
 
                $w_line insert end "$total_lines" linenumber
                $w_file insert end "$line"
        }
-       $w_load conf -state disabled
-       $w_cgrp conf -state disabled
-       $w_line conf -state disabled
-       $w_file conf -state disabled
+
+       set ln_wc [expr {[string length $total_lines] + 2}]
+       if {[$w_line cget -width] < $ln_wc} {
+               $w_line conf -width $ln_wc
+       }
+
+       foreach i $w_columns {$i conf -state disabled}
 
        if {[eof $fd]} {
                close $fd
-               _status $this
-               set cmd [list git blame -M -C --incremental]
-               if {$commit eq {}} {
-                       lappend cmd --contents $path
-               } else {
-                       lappend cmd $commit
+
+               # If we don't force Tk to update the widgets *right now*
+               # none of our jump commands will cause a change in the UI.
+               #
+               update
+
+               if {[llength $jump] == 1} {
+                       set highlight_line [lindex $jump 0]
+                       $w_file see "$highlight_line.0"
+               } elseif {[llength $jump] == 4} {
+                       set highlight_column [lindex $jump 0]
+                       set highlight_line [lindex $jump 1]
+                       $w_file xview moveto [lindex $jump 2]
+                       $w_file yview moveto [lindex $jump 3]
                }
-               lappend cmd -- $path
-               set fd [open "| $cmd" r]
-               fconfigure $fd -blocking 0 -translation lf -encoding binary
-               fileevent $fd readable [cb _read_blame $fd]
+
+               _exec_blame $this $w_asim @asim_data \
+                       [list] \
+                       { copy/move tracking}
        }
 } ifdeleted { catch {close $fd} }
 
-method _read_blame {fd} {
+method _exec_blame {cur_w cur_d options cur_s} {
+       set cmd [list nice git blame]
+       set cmd [concat $cmd $options]
+       lappend cmd --incremental
+       if {$commit eq {}} {
+               lappend cmd --contents $path
+       } else {
+               lappend cmd $commit
+       }
+       lappend cmd -- $path
+       set fd [open "| $cmd" r]
+       fconfigure $fd -blocking 0 -translation lf -encoding binary
+       fileevent $fd readable [cb _read_blame $fd $cur_w $cur_d $cur_s]
+       set current_fd $fd
+       set blame_lines 0
+       _status $this $cur_s
+}
+
+method _read_blame {fd cur_w cur_d cur_s} {
+       upvar #0 $cur_d line_data
        variable group_colors
 
-       $w_cgrp conf -state normal
+       if {$fd ne $current_fd} {
+               catch {close $fd}
+               return
+       }
+
+       $cur_w conf -state normal
        while {[gets $fd line] >= 0} {
                if {[regexp {^([a-z0-9]{40}) (\d+) (\d+) (\d+)$} $line line \
                        cmit original_line final_line line_count]} {
@@ -248,144 +518,241 @@ method _read_blame {fd} {
                        set r_orig_line  $original_line
                        set r_final_line $final_line
                        set r_line_count $line_count
-
-                       if {[catch {set g $order($cmit)}]} {
-                               set bg [lindex $group_colors 0]
-                               set group_colors [lrange $group_colors 1 end]
-                               lappend group_colors $bg
-
-                               $w_cgrp tag conf g$cmit -background $bg
-                               $w_line tag conf g$cmit -background $bg
-                               $w_file tag conf g$cmit -background $bg
-
-                               set order($cmit) $commit_count
-                               incr commit_count
-                               lappend commit_list $cmit
-                       }
                } elseif {[string match {filename *} $line]} {
                        set file [string range $line 9 end]
                        set n    $r_line_count
                        set lno  $r_final_line
+                       set oln  $r_orig_line
                        set cmit $r_commit
 
                        if {[regexp {^0{40}$} $cmit]} {
-                               set abbr work
+                               set commit_abbr work
+                               set commit_type curr_commit
+                       } elseif {$cmit eq $commit} {
+                               set commit_abbr this
+                               set commit_type curr_commit
+                       } else {
+                               set commit_type prior_commit
+                               set commit_abbr [string range $cmit 0 3]
+                       }
+
+                       set author_abbr {}
+                       set a_name {}
+                       catch {set a_name $header($cmit,author)}
+                       while {$a_name ne {}} {
+                               if {![regexp {^([[:upper:]])} $a_name _a]} break
+                               append author_abbr $_a
+                               unset _a
+                               if {![regsub \
+                                       {^[[:upper:]][^\s]*\s+} \
+                                       $a_name {} a_name ]} break
+                       }
+                       if {$author_abbr eq {}} {
+                               set author_abbr { |}
                        } else {
-                               set abbr [string range $cmit 0 4]
+                               set author_abbr [string range $author_abbr 0 3]
+                       }
+                       unset a_name
+
+                       set first_lno $lno
+                       while {
+                          $first_lno > 1
+                       && $cmit eq [lindex $line_data [expr {$first_lno - 1}] 0]
+                       && $file eq [lindex $line_data [expr {$first_lno - 1}] 1]
+                       } {
+                               incr first_lno -1
                        }
 
-                       if {![catch {set ncmit $line_commit([expr {$lno - 1}])}]} {
-                               if {$ncmit eq $cmit} {
-                                       set abbr |
+                       set color {}
+                       if {$first_lno < $lno} {
+                               foreach g [$w_file tag names $first_lno.0] {
+                                       if {[regexp {^color[0-9]+$} $g]} {
+                                               set color $g
+                                               break
+                                       }
+                               }
+                       } else {
+                               set i [lsort [concat \
+                                       [$w_file tag names "[expr {$first_lno - 1}].0"] \
+                                       [$w_file tag names "[expr {$lno + $n}].0"] \
+                                       ]]
+                               for {set g 0} {$g < [llength $group_colors]} {incr g} {
+                                       if {[lsearch -sorted -exact $i color$g] == -1} {
+                                               set color color$g
+                                               break
+                                       }
                                }
                        }
+                       if {$color eq {}} {
+                               set color color0
+                       }
 
                        while {$n > 0} {
                                set lno_e "$lno.0 lineend + 1c"
-                               if {[catch {set g g$line_commit($lno)}]} {
-                                       $w_load tag add annotated $lno.0 $lno_e
-                               } else {
-                                       $w_cgrp tag remove g$g $lno.0 $lno_e
-                                       $w_line tag remove g$g $lno.0 $lno_e
-                                       $w_file tag remove g$g $lno.0 $lno_e
-
-                                       $w_cgrp tag remove a$g $lno.0 $lno_e
-                                       $w_line tag remove a$g $lno.0 $lno_e
-                                       $w_file tag remove a$g $lno.0 $lno_e
+                               if {[lindex $line_data $lno] ne {}} {
+                                       set g [lindex $line_data $lno 0]
+                                       foreach i $w_columns {
+                                               $i tag remove g$g $lno.0 $lno_e
+                                       }
                                }
+                               lset line_data $lno [list $cmit $file $oln]
 
-                               set line_commit($lno) $cmit
-                               set line_file($lno)   $file
-
-                               $w_cgrp delete $lno.0 "$lno.0 lineend"
-                               $w_cgrp insert $lno.0 $abbr
-                               set abbr |
-
-                               $w_cgrp tag add g$cmit $lno.0 $lno_e
-                               $w_line tag add g$cmit $lno.0 $lno_e
-                               $w_file tag add g$cmit $lno.0 $lno_e
+                               $cur_w delete $lno.0 "$lno.0 lineend"
+                               if {$lno == $first_lno} {
+                                       $cur_w insert $lno.0 $commit_abbr $commit_type
+                               } elseif {$lno == [expr {$first_lno + 1}]} {
+                                       $cur_w insert $lno.0 $author_abbr author_abbr
+                               } else {
+                                       $cur_w insert $lno.0 { |}
+                               }
 
-                               $w_cgrp tag add a$cmit $lno.0 $lno_e
-                               $w_line tag add a$cmit $lno.0 $lno_e
-                               $w_file tag add a$cmit $lno.0 $lno_e
+                               foreach i $w_columns {
+                                       if {$cur_w eq $w_amov} {
+                                               for {set g 0} \
+                                                       {$g < [llength $group_colors]} \
+                                                       {incr g} {
+                                                       $i tag remove color$g $lno.0 $lno_e
+                                               }
+                                               $i tag add $color $lno.0 $lno_e
+                                       }
+                                       $i tag add g$cmit $lno.0 $lno_e
+                               }
 
-                               if {$highlight_line == -1} {
-                                       if {[lindex [$w_file yview] 0] == 0} {
+                               if {$highlight_column eq $cur_w} {
+                                       if {$highlight_line == -1
+                                        && [lindex [$w_file yview] 0] == 0} {
                                                $w_file see $lno.0
-                                               _showcommit $this $lno
+                                               set highlight_line $lno
+                                       }
+                                       if {$highlight_line == $lno} {
+                                               _showcommit $this $cur_w $lno
                                        }
-                               } elseif {$highlight_line == $lno} {
-                                       _showcommit $this $lno
                                }
 
                                incr n -1
                                incr lno
+                               incr oln
                                incr blame_lines
                        }
 
-                       if {![catch {set ncmit $line_commit($lno)}]} {
-                               if {$ncmit eq $cmit} {
-                                       $w_cgrp delete $lno.0 "$lno.0 lineend + 1c"
-                                       $w_cgrp insert $lno.0 "|\n"
+                       while {
+                          $cmit eq [lindex $line_data $lno 0]
+                       && $file eq [lindex $line_data $lno 1]
+                       } {
+                               $cur_w delete $lno.0 "$lno.0 lineend"
+
+                               if {$lno == $first_lno} {
+                                       $cur_w insert $lno.0 $commit_abbr $commit_type
+                               } elseif {$lno == [expr {$first_lno + 1}]} {
+                                       $cur_w insert $lno.0 $author_abbr author_abbr
+                               } else {
+                                       $cur_w insert $lno.0 { |}
+                               }
+
+                               if {$cur_w eq $w_amov} {
+                                       foreach i $w_columns {
+                                               for {set g 0} \
+                                                       {$g < [llength $group_colors]} \
+                                                       {incr g} {
+                                                       $i tag remove color$g $lno.0 $lno_e
+                                               }
+                                               $i tag add $color $lno.0 $lno_e
+                                       }
                                }
-                       }
 
-                       set hc $highlight_commit
-                       if {$hc ne {}
-                               && [expr {$order($hc) + 1}] == $order($cmit)} {
-                               _showcommit $this $highlight_line
+                               incr lno
                        }
+
                } elseif {[regexp {^([a-z-]+) (.*)$} $line line key data]} {
                        set header($r_commit,$key) $data
                }
        }
-       $w_cgrp conf -state disabled
+       $cur_w conf -state disabled
 
        if {[eof $fd]} {
                close $fd
-               set status {Annotation complete.}
+               if {$cur_w eq $w_asim} {
+                       _exec_blame $this $w_amov @amov_data \
+                               [list -M -C -C] \
+                               { original location}
+               } else {
+                       set current_fd {}
+                       set status {Annotation complete.}
+                       destroy $w.status.c
+               }
        } else {
-               _status $this
+               _status $this $cur_s
        }
 } ifdeleted { catch {close $fd} }
 
-method _status {} {
+method _status {cur_s} {
        set have  $blame_lines
        set total $total_lines
        set pdone 0
        if {$total} {set pdone [expr {100 * $have / $total}]}
 
        set status [format \
-               "Loading annotations... %i of %i lines annotated (%2i%%)" \
-               $have $total $pdone]
+               "Loading%s annotations... %i of %i lines annotated (%2i%%)" \
+               $cur_s $have $total $pdone]
+       $w.status.c coords bar 0 0 $pdone 20
 }
 
 method _click {cur_w pos} {
        set lno [lindex [split [$cur_w index $pos] .] 0]
-       if {$lno eq {}} return
-       _showcommit $this $lno
+       _showcommit $this $cur_w $lno
+}
+
+method _load_commit {cur_w cur_d pos} {
+       upvar #0 $cur_d line_data
+       set lno [lindex [split [$cur_w index $pos] .] 0]
+       set dat [lindex $line_data $lno]
+       if {$dat ne {}} {
+               lappend history [list \
+                       $commit $path \
+                       $highlight_column \
+                       $highlight_line \
+                       [lindex [$w_file xview] 0] \
+                       [lindex [$w_file yview] 0] \
+                       ]
+               set commit [lindex $dat 0]
+               set path   [lindex $dat 1]
+               _load $this [list [lindex $dat 2]]
+       }
 }
 
-method _showcommit {lno} {
+method _showcommit {cur_w lno} {
        global repo_config
        variable active_color
 
        if {$highlight_commit ne {}} {
-               set cmit $highlight_commit
-               $w_cgrp tag conf a$cmit -background {}
-               $w_line tag conf a$cmit -background {}
-               $w_file tag conf a$cmit -background {}
+               foreach i $w_columns {
+                       $i tag conf g$highlight_commit -background {}
+                       $i tag lower g$highlight_commit
+               }
+       }
+
+       if {$cur_w eq $w_amov} {
+               set dat [lindex $amov_data $lno]
+               set highlight_column $w_amov
+       } else {
+               set dat [lindex $asim_data $lno]
+               set highlight_column $w_asim
        }
 
-       $w_cmit conf -state normal
-       $w_cmit delete 0.0 end
-       if {[catch {set cmit $line_commit($lno)}]} {
+       $w_cviewer conf -state normal
+       $w_cviewer delete 0.0 end
+
+       if {$dat eq {}} {
                set cmit {}
-               $w_cmit insert end "Loading annotation..."
+               $w_cviewer insert end "Loading annotation..." still_loading
        } else {
-               $w_cgrp tag conf a$cmit -background $active_color
-               $w_line tag conf a$cmit -background $active_color
-               $w_file tag conf a$cmit -background $active_color
+               set cmit [lindex $dat 0]
+               set file [lindex $dat 1]
+
+               foreach i $w_columns {
+                       $i tag conf g$cmit -background $active_color
+                       $i tag raise g$cmit
+               }
 
                set author_name {}
                set author_email {}
@@ -433,29 +800,195 @@ method _showcommit {lno} {
                        set header($cmit,message) $msg
                }
 
-               $w_cmit insert end "commit $cmit
-Author: $author_name $author_email  $author_time
-Committer: $committer_name $committer_email  $committer_time
-Original File: [escape_path $line_file($lno)]
+               $w_cviewer insert end "commit $cmit\n" header_key
+               $w_cviewer insert end "Author:\t" header_key
+               $w_cviewer insert end "$author_name $author_email" header_val
+               $w_cviewer insert end "  $author_time\n" header_val
 
-$msg"
+               $w_cviewer insert end "Committer:\t" header_key
+               $w_cviewer insert end "$committer_name $committer_email" header_val
+               $w_cviewer insert end "  $committer_time\n" header_val
+
+               if {$file ne $path} {
+                       $w_cviewer insert end "Original File:\t" header_key
+                       $w_cviewer insert end "[escape_path $file]\n" header_val
+               }
+
+               $w_cviewer insert end "\n$msg"
        }
-       $w_cmit conf -state disabled
+       $w_cviewer conf -state disabled
 
        set highlight_line $lno
        set highlight_commit $cmit
+
+       if {[lsearch -exact $tooltip_commit $highlight_commit] != -1} {
+               _hide_tooltip $this
+       }
 }
 
 method _copycommit {} {
        set pos @$::cursorX,$::cursorY
        set lno [lindex [split [$::cursorW index $pos] .] 0]
-       if {![catch {set commit $line_commit($lno)}]} {
+       set dat [lindex $amov_data $lno]
+       if {$dat ne {}} {
                clipboard clear
                clipboard append \
                        -format STRING \
                        -type STRING \
-                       -- $commit
+                       -- [lindex $dat 0]
+       }
+}
+
+method _show_tooltip {cur_w pos} {
+       if {$tooltip_wm ne {}} {
+               _open_tooltip $this $cur_w
+       } elseif {$tooltip_timer eq {}} {
+               set tooltip_timer [after 1000 [cb _open_tooltip $cur_w]]
+       }
+}
+
+method _open_tooltip {cur_w} {
+       set tooltip_timer {}
+       set pos_x [winfo pointerx $cur_w]
+       set pos_y [winfo pointery $cur_w]
+       if {[winfo containing $pos_x $pos_y] ne $cur_w} {
+               _hide_tooltip $this
+               return
+       }
+
+       if {$tooltip_wm ne "$cur_w.tooltip"} {
+               _hide_tooltip $this
+
+               set tooltip_wm [toplevel $cur_w.tooltip -borderwidth 1]
+               wm overrideredirect $tooltip_wm 1
+               wm transient $tooltip_wm [winfo toplevel $cur_w]
+               set tooltip_t $tooltip_wm.label
+               text $tooltip_t \
+                       -takefocus 0 \
+                       -highlightthickness 0 \
+                       -relief flat \
+                       -borderwidth 0 \
+                       -wrap none \
+                       -background lightyellow \
+                       -foreground black
+               $tooltip_t tag conf section_header -font font_uibold
+               pack $tooltip_t
+       } else {
+               $tooltip_t conf -state normal
+               $tooltip_t delete 0.0 end
+       }
+
+       set pos @[join [list \
+               [expr {$pos_x - [winfo rootx $cur_w]}] \
+               [expr {$pos_y - [winfo rooty $cur_w]}]] ,]
+       set lno [lindex [split [$cur_w index $pos] .] 0]
+       if {$cur_w eq $w_amov} {
+               set dat [lindex $amov_data $lno]
+               set org {}
+       } else {
+               set dat [lindex $asim_data $lno]
+               set org [lindex $amov_data $lno]
+       }
+
+       set cmit [lindex $dat 0]
+       set tooltip_commit [list $cmit]
+
+       set author_name {}
+       set summary     {}
+       set author_time {}
+       catch {set author_name $header($cmit,author)}
+       catch {set summary     $header($cmit,summary)}
+       catch {set author_time [clock format \
+               $header($cmit,author-time) \
+               -format {%Y-%m-%d %H:%M:%S}
+       ]}
+
+       $tooltip_t insert end "commit $cmit\n"
+       $tooltip_t insert end "$author_name  $author_time\n"
+       $tooltip_t insert end "$summary"
+
+       if {$org ne {} && [lindex $org 0] ne $cmit} {
+               $tooltip_t insert 0.0 "Copied/Moved Here By:\n" section_header
+               set cmit [lindex $org 0]
+               set file [lindex $org 1]
+               lappend tooltip_commit $cmit
+
+               set author_name {}
+               set summary     {}
+               set author_time {}
+               catch {set author_name $header($cmit,author)}
+               catch {set summary     $header($cmit,summary)}
+               catch {set author_time [clock format \
+                       $header($cmit,author-time) \
+                       -format {%Y-%m-%d %H:%M:%S}
+               ]}
+
+               $tooltip_t insert end "\n\n"
+               $tooltip_t insert end "Originally By:\n" section_header
+               $tooltip_t insert end "commit $cmit\n"
+               $tooltip_t insert end "$author_name  $author_time\n"
+               $tooltip_t insert end "$summary"
+
+               if {$file ne $path} {
+                       $tooltip_t insert end "\n"
+                       $tooltip_t insert end "In File: " section_header
+                       $tooltip_t insert end $file
+               }
+       }
+
+       $tooltip_t conf -state disabled
+       _position_tooltip $this
+}
+
+method _position_tooltip {} {
+       set max_h [lindex [split [$tooltip_t index end] .] 0]
+       set max_w 0
+       for {set i 1} {$i <= $max_h} {incr i} {
+               set c [lindex [split [$tooltip_t index "$i.0 lineend"] .] 1]
+               if {$c > $max_w} {set max_w $c}
        }
+       $tooltip_t conf -width $max_w -height $max_h
+
+       set req_w [winfo reqwidth  $tooltip_t]
+       set req_h [winfo reqheight $tooltip_t]
+       set pos_x [expr {[winfo pointerx .] +  5}]
+       set pos_y [expr {[winfo pointery .] + 10}]
+
+       set g "${req_w}x${req_h}"
+       if {$pos_x >= 0} {append g +}
+       append g $pos_x
+       if {$pos_y >= 0} {append g +}
+       append g $pos_y
+
+       wm geometry $tooltip_wm $g
+       raise $tooltip_wm
+}
+
+method _hide_tooltip {} {
+       if {$tooltip_wm ne {}} {
+               destroy $tooltip_wm
+               set tooltip_wm {}
+               set tooltip_commit {}
+       }
+       if {$tooltip_timer ne {}} {
+               after cancel $tooltip_timer
+               set tooltip_timer {}
+       }
+}
+
+method _resize {new_height} {
+       set diff [expr {$new_height - $old_height}]
+       if {$diff == 0} return
+
+       set my [expr {[winfo height $w.file_pane] - 25}]
+       set o [$w.file_pane sash coord 0]
+       set ox [lindex $o 0]
+       set oy [expr {[lindex $o 1] + $diff}]
+       if {$oy < 0}   {set oy 0}
+       if {$oy > $my} {set oy $my}
+       $w.file_pane sash place 0 $ox $oy
+
+       set old_height $new_height
 }
 
 }