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+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
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+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

theme/arc/arc.tcl

@@ -0,0 +1,309 @@
+#  Copyright (c) 2015 Sergei Golovan <sgolovan@nes.ru>
+#  Derived from https://github.com/horst3180/arc-theme/ under the GNU GPLv3
+#  Thus this is available under GNU GPLv3 also, as described in LICENSE
+
+namespace eval ttk::theme::arc {
+
+    variable colors
+    array set colors {
+        -fg             "#5c616c"
+        -bg             "#f5f6f7"
+        -disabledbg     "#fbfcfc"
+        -disabledfg     "#a9acb2"
+        -selectbg       "#5294e2"
+        -selectfg       "#ffffff"
+        -window         "#ffffff"
+        -focuscolor     "#5c616c"
+        -checklight     "#fbfcfc"
+    }
+
+    proc LoadImages {imgdir} {
+        variable I
+        foreach file [glob -directory $imgdir *.png] {
+            set img [file tail [file rootname $file]]
+            set I($img) [image create photo -file $file -format png]
+        }
+    }
+
+    LoadImages [file join [file dirname [info script]] arc]
+
+    ttk::style theme create arc -parent default -settings {
+        ttk::style configure . \
+            -background $colors(-bg) \
+            -foreground $colors(-fg) \
+            -troughcolor $colors(-bg) \
+            -selectbg $colors(-selectbg) \
+            -selectfg $colors(-selectfg) \
+            -fieldbg $colors(-window) \
+            -font TkDefaultFont \
+            -borderwidth 1 \
+            -focuscolor $colors(-focuscolor)
+
+        ttk::style map . -foreground [list disabled $colors(-disabledfg)]
+
+        # Layouts
+        ttk::style layout TButton {
+            Button.button -children {
+                Button.focus -children {
+                    Button.padding -children {
+                        Button.label -side left -expand true
+                    }
+                }
+            }
+        }
+
+        ttk::style layout Toolbutton {
+            Toolbutton.button -children {
+                Toolbutton.focus -children {
+                    Toolbutton.padding -children {
+                        Toolbutton.label -side left -expand true
+                    }
+                }
+            }
+        }
+
+        ttk::style layout Vertical.TScrollbar {
+            Vertical.Scrollbar.trough -sticky ns -children {
+                Vertical.Scrollbar.thumb -expand true
+            }
+        }
+
+        ttk::style layout Horizontal.TScrollbar {
+            Horizontal.Scrollbar.trough -sticky ew -children {
+                Horizontal.Scrollbar.thumb -expand true
+            }
+        }
+
+        ttk::style layout TMenubutton {
+            Menubutton.button -children {
+                Menubutton.focus -children {
+                    Menubutton.padding -children {
+                        Menubutton.indicator -side right
+                        Menubutton.label -side right -expand true
+                    }
+                }
+            }
+        }
+
+        ttk::style layout TCombobox {
+            Combobox.field -sticky nswe -children {
+                Combobox.downarrow -side right -sticky ns -children {
+                    Combobox.arrow -side right
+                }
+                Combobox.padding -expand true -sticky nswe -children {
+                    Combobox.textarea -sticky nswe
+                }
+            }
+        }
+
+        ttk::style layout TSpinbox {
+            Spinbox.field -side top -sticky we -children {
+                Spinbox.buttons -side right -children {
+                    null -side right -sticky {} -children {
+                        Spinbox.uparrow -side top -sticky nse -children {
+                            Spinbox.symuparrow -side right -sticky e
+                        }
+                        Spinbox.downarrow -side bottom -sticky nse -children {
+                            Spinbox.symdownarrow -side right -sticky e
+                        }
+                    }
+                }
+                Spinbox.padding -sticky nswe -children {
+                    Spinbox.textarea -sticky nswe
+                }
+            }
+        }
+
+        # Elements
+        ttk::style element create Button.button image [list $I(button) \
+                pressed     $I(button-active) \
+                active      $I(button-hover) \
+                disabled    $I(button-insensitive) \
+            ] -border 3 -padding {3 2} -sticky ewns
+
+        ttk::style element create Toolbutton.button image [list $I(button-empty) \
+                selected            $I(button-active) \
+                pressed             $I(button-active) \
+                {active !disabled}  $I(button-hover) \
+            ] -border 3 -padding {3 2} -sticky news
+
+        ttk::style element create Checkbutton.indicator image [list $I(checkbox-unchecked) \
+                disabled            $I(checkbox-unchecked-insensitive) \
+                {active selected}   $I(checkbox-checked) \
+                {pressed selected}  $I(checkbox-checked) \
+                active              $I(checkbox-unchecked) \
+                selected            $I(checkbox-checked) \
+                {disabled selected} $I(checkbox-checked-insensitive) \
+            ] -width 22 -sticky w
+
+        ttk::style element create Radiobutton.indicator image [list $I(radio-unchecked) \
+                disabled            $I(radio-unchecked-insensitive) \
+                {active selected}   $I(radio-checked) \
+                {pressed selected}  $I(radio-checked) \
+                active              $I(radio-unchecked) \
+                selected            $I(radio-checked) \
+                {disabled selected} $I(radio-checked-insensitive) \
+            ] -width 22 -sticky w
+
+        ttk::style element create Horizontal.Scrollbar.trough image $I(trough-scrollbar-horiz)
+        ttk::style element create Horizontal.Scrollbar.thumb \
+            image [list $I(slider-horiz) \
+                        {pressed !disabled} $I(slider-horiz-active) \
+                        {active !disabled}  $I(slider-horiz-prelight) \
+                        disabled            $I(slider-horiz-insens) \
+            ] -border 6 -sticky ew
+
+        ttk::style element create Vertical.Scrollbar.trough image $I(trough-scrollbar-vert)
+        ttk::style element create Vertical.Scrollbar.thumb \
+            image [list $I(slider-vert) \
+                        {pressed !disabled} $I(slider-vert-active) \
+                        {active !disabled}  $I(slider-vert-prelight) \
+                        disabled            $I(slider-vert-insens) \
+            ] -border 6 -sticky ns
+
+        ttk::style element create Horizontal.Scale.trough \
+            image [list $I(trough-horizontal-active) disabled $I(trough-horizontal)] \
+            -border {8 5 8 5} -padding 0
+        ttk::style element create Horizontal.Scale.slider \
+            image [list $I(slider) disabled $I(slider-insensitive) active $I(slider-prelight)] \
+            -sticky {}
+
+        ttk::style element create Vertical.Scale.trough \
+            image [list $I(trough-vertical-active) disabled $I(trough-vertical)] \
+            -border {5 8 5 8} -padding 0
+        ttk::style element create Vertical.Scale.slider \
+            image [list $I(slider) disabled $I(slider-insensitive) active $I(slider-prelight)] \
+            -sticky {}
+
+        ttk::style element create Entry.field \
+            image [list $I(entry-border-bg-solid) \
+                        focus $I(entry-border-active-bg-solid) \
+                        disabled $I(entry-border-disabled-bg)] \
+            -border 3 -padding {6 4} -sticky news
+
+        ttk::style element create Labelframe.border image $I(labelframe) \
+            -border 4 -padding 4 -sticky news
+
+        ttk::style element create Menubutton.button \
+            image [list $I(button) \
+                        pressed  $I(button-active) \
+                        active   $I(button-hover) \
+                        disabled $I(button-insensitive) \
+            ] -sticky news -border 3 -padding {3 2}
+        ttk::style element create Menubutton.indicator \
+            image [list $I(arrow-down) \
+                        active   $I(arrow-down-prelight) \
+                        pressed  $I(arrow-down-prelight) \
+                        disabled $I(arrow-down-insens) \
+            ] -sticky e -width 20
+
+        ttk::style element create Combobox.field \
+            image [list $I(combo-entry) \
+                {readonly disabled}  $I(button-insensitive) \
+                {readonly pressed}   $I(button-active) \
+                {readonly focus}     $I(button-focus) \
+                {readonly hover}     $I(button-hover) \
+                readonly             $I(button) \
+                {disabled} $I(combo-entry-insensitive) \
+                {focus}    $I(combo-entry-focus) \
+                {hover}    $I(combo-entry) \
+            ] -border 4 -padding {6 0 0 0}
+        ttk::style element create Combobox.downarrow \
+            image [list $I(combo-entry-button) \
+                        pressed   $I(combo-entry-button-active) \
+                        active    $I(combo-entry-button-hover) \
+                        disabled  $I(combo-entry-button-insensitive) \
+          ] -border 4 -padding {0 10 6 10}
+        ttk::style element create Combobox.arrow \
+            image [list $I(arrow-down) \
+                        active    $I(arrow-down-prelight) \
+                        pressed   $I(arrow-down-prelight) \
+                        disabled  $I(arrow-down-insens) \
+          ]  -sticky e -width 15
+
+        ttk::style element create Spinbox.field \
+            image [list $I(combo-entry) focus $I(combo-entry-focus)] \
+            -border 4 -padding {6 0 0 0} -sticky news
+        ttk::style element create Spinbox.uparrow \
+            image [list $I(up-background) \
+                        pressed   $I(up-background-active) \
+                        active    $I(up-background-hover) \
+                        disabled  $I(up-background-disable) \
+            ] -width 20 -border {0 2 3 0} -padding {0 5 6 2}
+        ttk::style element create Spinbox.symuparrow \
+            image [list $I(arrow-up-small) \
+                        active    $I(arrow-up-small-prelight) \
+                        pressed   $I(arrow-up-small-prelight) \
+                        disabled  $I(arrow-up-small-insens) \
+            ]
+        ttk::style element create Spinbox.downarrow \
+            image [list $I(down-background) \
+                        pressed   $I(down-background-active) \
+                        active    $I(down-background-hover) \
+                        disabled  $I(down-background-disable) \
+            ] -width 20 -border {0 0 3 2} -padding {0 2 6 5}
+        ttk::style element create Spinbox.symdownarrow \
+            image [list $I(arrow-down-small) \
+                        active    $I(arrow-down-small-prelight) \
+                        pressed   $I(arrow-down-small-prelight) \
+                        disabled  $I(arrow-down-small-insens) \
+          ]
+
+        ttk::style element create Notebook.client \
+            image $I(notebook) -border 1
+        ttk::style element create Notebook.tab \
+            image [list $I(tab-top) \
+                        selected    $I(tab-top-active) \
+                        active      $I(tab-top-hover) \
+            ] -padding {0 2 0 0} -border 2
+
+        ttk::style element create Horizontal.Progressbar.trough \
+            image $I(trough-progressbar_v) -border {5 1 5 1} -padding 1 -sticky ew
+        ttk::style element create Horizontal.Progressbar.pbar \
+            image $I(progressbar_v) -border {4 0 4 0} -sticky ew
+
+        ttk::style element create Vertical.Progressbar.trough \
+            image $I(trough-progressbar) -border {1 5 1 5} -padding 1 -sticky ns
+        ttk::style element create Vertical.Progressbar.pbar \
+            image $I(progressbar) -border {0 4 0 4} -sticky ns
+
+        ttk::style element create Treeview.field \
+            image $I(treeview) -border 1
+        ttk::style element create Treeheading.cell \
+            image [list $I(notebook) pressed $I(notebook)] \
+            -border 1 -padding 4 -sticky ewns
+
+        ttk::style element create Treeitem.indicator \
+            image [list $I(plus) user2 $I(empty) user1 $I(minus)] \
+            -width 15 -sticky w
+
+        #ttk::style element create Separator.separator image $I()
+
+        #
+        # Settings:
+        #
+
+        ttk::style configure TButton -padding {8 4 8 4} -width -10 -anchor center
+        ttk::style configure TMenubutton -padding {8 4 4 4}
+        ttk::style configure Toolbutton -anchor center
+        ttk::style map TCheckbutton -background [list active $colors(-checklight)]
+        ttk::style configure TCheckbutton -padding 3
+        ttk::style map TRadiobutton -background [list active $colors(-checklight)]
+        ttk::style configure TRadiobutton -padding 3
+        ttk::style configure TNotebook -tabmargins {0 2 0 0}
+        ttk::style configure TNotebook.Tab -padding {6 2 6 2} -expand {0 0 2}
+        ttk::style map TNotebook.Tab -expand [list selected {1 2 4 2}]
+        ttk::style configure TSeparator -background $colors(-bg)
+
+        # Treeview
+        ttk::style configure Treeview -background $colors(-window)
+        ttk::style configure Treeview.Item -padding {2 0 0 0}
+        ttk::style map Treeview \
+            -background [list selected $colors(-selectbg)] \
+            -foreground [list selected $colors(-selectfg)]
+    }
+}
+
+variable version 0.1
+package provide ttk::theme::arc $version
+