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Diffstat (limited to 'git-gui/lib/themed.tcl')
| -rw-r--r-- | git-gui/lib/themed.tcl | 410 |
1 files changed, 410 insertions, 0 deletions
diff --git a/git-gui/lib/themed.tcl b/git-gui/lib/themed.tcl new file mode 100644 index 0000000..f43d84e --- /dev/null +++ b/git-gui/lib/themed.tcl @@ -0,0 +1,410 @@ +# Functions for supporting the use of themed Tk widgets in git-gui. +# Copyright (C) 2009 Pat Thoyts <patthoyts@users.sourceforge.net> + + +namespace eval color { + # Variable colors + # Preffered way to set widget colors is using add_option. + # In some cases, like with tags in_diff/in_sel, we use these colors. + variable select_bg lightgray + variable select_fg black + variable inactive_select_bg lightgray + variable inactive_select_fg black + + proc sync_with_theme {} { + set base_bg [ttk::style lookup . -background] + set base_fg [ttk::style lookup . -foreground] + set text_bg [ttk::style lookup Treeview -background] + set text_fg [ttk::style lookup Treeview -foreground] + set select_bg [ttk::style lookup Default -selectbackground] + set select_fg [ttk::style lookup Default -selectforeground] + set inactive_select_bg [convert_rgb_to_gray $select_bg] + set inactive_select_fg $select_fg + + set color::select_bg $select_bg + set color::select_fg $select_fg + set color::inactive_select_bg $inactive_select_bg + set color::inactive_select_fg $inactive_select_fg + + proc add_option {key val} { + option add $key $val widgetDefault + } + # Add options for plain Tk widgets + # Using `option add` instead of tk_setPalette to avoid unintended + # consequences. + if {![is_MacOSX]} { + add_option *Menu.Background $base_bg + add_option *Menu.Foreground $base_fg + add_option *Menu.activeBackground $select_bg + add_option *Menu.activeForeground $select_fg + } + add_option *Text.Background $text_bg + add_option *Text.Foreground $text_fg + add_option *Text.selectBackground $select_bg + add_option *Text.selectForeground $select_fg + add_option *Text.inactiveSelectBackground $inactive_select_bg + add_option *Text.inactiveSelectForeground $inactive_select_fg + } +} + +proc convert_rgb_to_gray {rgb} { + # Simply take the average of red, green and blue. This wouldn't be good + # enough for, say, converting a photo to grayscale, but for this simple + # purpose of approximating the brightness of a color it's good enough. + lassign [winfo rgb . $rgb] r g b + set gray [expr {($r / 256 + $g / 256 + $b / 256) / 3}] + return [format "#%2.2X%2.2X%2.2X" $gray $gray $gray] +} + +proc ttk_get_current_theme {} { + # Handle either current Tk or older versions of 8.5 + if {[catch {set theme [ttk::style theme use]}]} { + set theme $::ttk::currentTheme + } + return $theme +} + +proc InitTheme {} { + # Create a color label style (bg can be overridden by widget option) + ttk::style layout Color.TLabel { + Color.Label.border -sticky news -children { + Color.label.fill -sticky news -children { + Color.Label.padding -sticky news -children { + Color.Label.label -sticky news}}}} + eval [linsert [ttk::style configure TLabel] 0 \ + ttk::style configure Color.TLabel] + ttk::style configure Color.TLabel \ + -borderwidth 0 -relief flat -padding 2 + ttk::style map Color.TLabel -background {{} gold} + # We also need a padded label. + ttk::style configure Padded.TLabel \ + -padding {5 5} -borderwidth 1 -relief solid + # We need a gold frame. + ttk::style layout Gold.TFrame { + Gold.Frame.border -sticky nswe -children { + Gold.Frame.fill -sticky nswe}} + ttk::style configure Gold.TFrame -background gold -relief flat + # listboxes should have a theme border so embed in ttk::frame + ttk::style layout SListbox.TFrame { + SListbox.Frame.Entry.field -sticky news -border true -children { + SListbox.Frame.padding -sticky news + } + } + + set theme [ttk_get_current_theme] + + if {[lsearch -exact {default alt classic clam} $theme] != -1} { + # Simple override of standard ttk::entry to change the field + # packground according to a state flag. We should use 'user1' + # but not all versions of 8.5 support that so make use of 'pressed' + # which is not normally in use for entry widgets. + ttk::style layout Edged.Entry [ttk::style layout TEntry] + ttk::style map Edged.Entry {*}[ttk::style map TEntry] + ttk::style configure Edged.Entry {*}[ttk::style configure TEntry] \ + -fieldbackground lightgreen + ttk::style map Edged.Entry -fieldbackground { + {pressed !disabled} lightpink + } + } else { + # For fancier themes, in particular the Windows ones, the field + # element may not support changing the background color. So instead + # override the fill using the default fill element. If we overrode + # the vista theme field element we would loose the themed border + # of the widget. + catch { + ttk::style element create color.fill from default + } + + ttk::style layout Edged.Entry { + Edged.Entry.field -sticky nswe -border 0 -children { + Edged.Entry.border -sticky nswe -border 1 -children { + Edged.Entry.padding -sticky nswe -children { + Edged.Entry.color.fill -sticky nswe -children { + Edged.Entry.textarea -sticky nswe + } + } + } + } + } + + ttk::style configure Edged.Entry {*}[ttk::style configure TEntry] \ + -background lightgreen -padding 0 -borderwidth 0 + ttk::style map Edged.Entry {*}[ttk::style map TEntry] \ + -background {{pressed !disabled} lightpink} + } + + if {[lsearch [bind . <<ThemeChanged>>] InitTheme] == -1} { + bind . <<ThemeChanged>> +[namespace code [list InitTheme]] + } +} + +# Define a style used for the surround of text widgets. +proc InitEntryFrame {} { + ttk::style theme settings default { + ttk::style layout EntryFrame { + EntryFrame.field -sticky nswe -border 0 -children { + EntryFrame.fill -sticky nswe -children { + EntryFrame.padding -sticky nswe + } + } + } + ttk::style configure EntryFrame -padding 1 -relief sunken + ttk::style map EntryFrame -background {} + } + ttk::style theme settings classic { + ttk::style configure EntryFrame -padding 2 -relief sunken + ttk::style map EntryFrame -background {} + } + ttk::style theme settings alt { + ttk::style configure EntryFrame -padding 2 + ttk::style map EntryFrame -background {} + } + ttk::style theme settings clam { + ttk::style configure EntryFrame -padding 2 + ttk::style map EntryFrame -background {} + } + + # Ignore errors for missing native themes + catch { + ttk::style theme settings winnative { + ttk::style configure EntryFrame -padding 2 + } + ttk::style theme settings xpnative { + ttk::style configure EntryFrame -padding 1 + ttk::style element create EntryFrame.field vsapi \ + EDIT 1 {disabled 4 focus 3 active 2 {} 1} -padding 1 + } + ttk::style theme settings vista { + ttk::style configure EntryFrame -padding 2 + ttk::style element create EntryFrame.field vsapi \ + EDIT 6 {disabled 4 focus 3 active 2 {} 1} -padding 2 + } + } + + bind EntryFrame <Enter> {%W instate !disabled {%W state active}} + bind EntryFrame <Leave> {%W state !active} + bind EntryFrame <<ThemeChanged>> { + set pad [ttk::style lookup EntryFrame -padding] + %W configure -padding [expr {$pad eq {} ? 1 : $pad}] + } +} + +proc gold_frame {w args} { + global use_ttk + if {$use_ttk && ![is_MacOSX]} { + eval [linsert $args 0 ttk::frame $w -style Gold.TFrame] + } else { + eval [linsert $args 0 frame $w -background gold] + } +} + +proc tlabel {w args} { + global use_ttk + if {$use_ttk && ![is_MacOSX]} { + set cmd [list ttk::label $w -style Color.TLabel] + foreach {k v} $args { + switch -glob -- $k { + -activebackground {} + default { lappend cmd $k $v } + } + } + eval $cmd + } else { + eval [linsert $args 0 label $w] + } +} + +# The padded label gets used in the about class. +proc paddedlabel {w args} { + global use_ttk + if {$use_ttk} { + eval [linsert $args 0 ttk::label $w -style Padded.TLabel] + } else { + eval [linsert $args 0 label $w \ + -padx 5 -pady 5 \ + -justify left \ + -anchor w \ + -borderwidth 1 \ + -relief solid] + } +} + +# Create a toplevel for use as a dialog. +# If available, sets the EWMH dialog hint and if ttk is enabled +# place a themed frame over the surface. +proc Dialog {w args} { + eval [linsert $args 0 toplevel $w -class Dialog] + catch {wm attributes $w -type dialog} + pave_toplevel $w + return $w +} + +# Tk toplevels are not themed - so pave it over with a themed frame to get +# the base color correct per theme. +proc pave_toplevel {w} { + global use_ttk + if {$use_ttk && ![winfo exists $w.!paving]} { + set paving [ttk::frame $w.!paving] + place $paving -x 0 -y 0 -relwidth 1 -relheight 1 + lower $paving + } +} + +# Create a scrolled listbox with appropriate border for the current theme. +# On many themes the border for a scrolled listbox needs to go around the +# listbox and the scrollbar. +proc slistbox {w args} { + global use_ttk NS + if {$use_ttk} { + set f [ttk::frame $w -style SListbox.TFrame -padding 2] + } else { + set f [frame $w -relief flat] + } + if {[catch { + if {$use_ttk} { + eval [linsert $args 0 listbox $f.list -relief flat \ + -highlightthickness 0 -borderwidth 0] + } else { + eval [linsert $args 0 listbox $f.list] + } + ${NS}::scrollbar $f.vs -command [list $f.list yview] + $f.list configure -yscrollcommand [list $f.vs set] + grid $f.list $f.vs -sticky news + grid rowconfigure $f 0 -weight 1 + grid columnconfigure $f 0 -weight 1 + bind $f.list <<ListboxSelect>> \ + [list event generate $w <<ListboxSelect>>] + interp hide {} $w + interp alias {} $w {} $f.list + } err]} { + destroy $f + return -code error $err + } + return $w +} + +# fetch the background color from a widget. +proc get_bg_color {w} { + global use_ttk + if {$use_ttk} { + set bg [ttk::style lookup [winfo class $w] -background] + } else { + set bg [$w cget -background] + } + return $bg +} + +# ttk::spinbox didn't get added until 8.6 +proc tspinbox {w args} { + global use_ttk + if {$use_ttk && [llength [info commands ttk::spinbox]] > 0} { + eval [linsert $args 0 ttk::spinbox $w] + } else { + eval [linsert $args 0 spinbox $w] + } +} + +# Create a text widget with any theme specific properties. +proc ttext {w args} { + global use_ttk + if {$use_ttk} { + switch -- [ttk_get_current_theme] { + "vista" - "xpnative" { + lappend args -highlightthickness 0 -borderwidth 0 + } + } + } + set w [eval [linsert $args 0 text $w]] + if {$use_ttk} { + if {[winfo class [winfo parent $w]] eq "EntryFrame"} { + bind $w <FocusIn> {[winfo parent %W] state focus} + bind $w <FocusOut> {[winfo parent %W] state !focus} + } + } + return $w +} + +# themed frame suitable for surrounding a text field. +proc textframe {w args} { + global use_ttk + if {$use_ttk} { + if {[catch {ttk::style layout EntryFrame}]} { + InitEntryFrame + } + eval [linsert $args 0 ttk::frame $w -class EntryFrame -style EntryFrame] + } else { + eval [linsert $args 0 frame $w] + } + return $w +} + +proc tentry {w args} { + global use_ttk + if {$use_ttk} { + InitTheme + ttk::entry $w -style Edged.Entry + } else { + entry $w + } + + rename $w _$w + interp alias {} $w {} tentry_widgetproc $w + eval [linsert $args 0 tentry_widgetproc $w configure] + return $w +} +proc tentry_widgetproc {w cmd args} { + global use_ttk + switch -- $cmd { + state { + if {$use_ttk} { + return [uplevel 1 [list _$w $cmd] $args] + } else { + if {[lsearch -exact $args pressed] != -1} { + _$w configure -background lightpink + } else { + _$w configure -background lightgreen + } + } + } + configure { + if {$use_ttk} { + if {[set n [lsearch -exact $args -background]] != -1} { + set args [lreplace $args $n [incr n]] + if {[llength $args] == 0} {return} + } + } + return [uplevel 1 [list _$w $cmd] $args] + } + default { return [uplevel 1 [list _$w $cmd] $args] } + } +} + +# Tk 8.6 provides a standard font selection dialog. This uses the native +# dialogs on Windows and MacOSX or a standard Tk dialog on X11. +proc tchoosefont {w title familyvar sizevar} { + if {[package vsatisfies [package provide Tk] 8.6]} { + upvar #0 $familyvar family + upvar #0 $sizevar size + tk fontchooser configure -parent $w -title $title \ + -font [list $family $size] \ + -command [list on_choosefont $familyvar $sizevar] + tk fontchooser show + } else { + choose_font::pick $w $title $familyvar $sizevar + } +} + +# Called when the Tk 8.6 fontchooser selects a font. +proc on_choosefont {familyvar sizevar font} { + upvar #0 $familyvar family + upvar #0 $sizevar size + set font [font actual $font] + set family [dict get $font -family] + set size [dict get $font -size] +} + +# Local variables: +# mode: tcl +# indent-tabs-mode: t +# tab-width: 4 +# End: |