Industrial modified

One of my all time favourite GTK2 themes is the good old Industrial, part of the gtk-engines. I even maintain at SBo the GTK1 Industrial engine/theme. Unfortunatelly, there is no port to GTK3 and seems there will not be anytime soon. Just as with almost all famous GTK2 engines/themes. New themes are emerging following the flat design fashion that I am really not fond of.

What I do is, let XFCE apply Adwaita for the few GTK3 applications I use and select a GTK2 theme with a similar colour scheme for the rest. The colours of the Industrial theme do not match very well Adwaita’s, so I decided to modify it.

I copied the theme folder /usr/share/themes/Industrial and saved it to a convenient place with a new name, for example Industrial-adwaita. I opened the gtkrc file and modified the first row as follows:

gtk-color-scheme = "bg_color: #EDEDED\nfg_color: #2E3436\nbase_color: #fff\ntext_color: #000\nselected_bg_color: #4A90D9\nselected_fg_color: #fff\ntooltip_bg_color: #e5e5e5\ntooltip_fg_color: #000000"

style "industrial-default"
{
  xthickness = 1
  ythickness = 1

  GtkWidget::interior_focus = 1
  GtkButton::default_border = { 3, 3, 3, 3 }
  GtkButton::default_outside_border = { 3, 3, 3, 3 }
  GtkRange::trough_border = 0

  GtkWidget::focus_padding = 1

  GtkPaned::handle_size = 7

  GtkRange::slider_width = 15
  GtkRange::stepper_size = 15
  GtkScrollbar::min_slider_length = 30
  GtkCheckButton::indicator_size = 13
  GtkRadioButton::indicator_size = 13
  GtkMenuBar::internal-padding = 0

  WnckTasklist::fade-opacity = 1
  WnckTasklist::fade-overlay-rect = 0
  WnckTasklist::fade-loop-time = 2

  GtkButton::child_displacement_x = 0
  GtkButton::child_displacement_y = 1

  GtkEntry::progress-border = { 0, 0, 0, 0 }

  GtkMenuItem::selected_shadow_type = GTK_SHADOW_IN

  GtkRange::activate-slider = 1

  # The following line hints to gecko (and possibly other appliations)
  # that the entry should be drawn transparently on the canvas.
  # Without this, gecko will fill in the background of the entry.
  GtkEntry::honors-transparent-bg-hint = 1

  # color definitions
  bg[NORMAL]		= @bg_color
  bg[PRELIGHT]		= shade (1.1, @bg_color)
  bg[ACTIVE]		= shade (0.85, @bg_color)
  bg[SELECTED]		= mix (0.65, @selected_bg_color, @bg_color)
  bg[INSENSITIVE]	= shade (0.85, @bg_color)

  fg[NORMAL]		= @fg_color
  fg[PRELIGHT]		= @fg_color
  fg[ACTIVE]		= @fg_color
  fg[SELECTED]		= @selected_fg_color
  fg[INSENSITIVE]	= mix (0.4, @fg_color, shade (0.85, @bg_color)) #shaded to bg[INSENSITIVE]

  base[NORMAL]		= @base_color
  base[PRELIGHT]	= @base_color #XXX
  base[ACTIVE]		= mix (0.45, @selected_bg_color, @base_color) #b6c9cf
  base[SELECTED]	= @selected_bg_color
  base[INSENSITIVE]	= mix (0.95, @base_color, @text_color)

  text[NORMAL]		= @text_color
  text[PRELIGHT]	= @text_color #XXX
  text[ACTIVE]		= @selected_fg_color
  text[SELECTED]	= @selected_fg_color
  text[INSENSITIVE]	= mix (0.5, @text_color, @base_color)

#  bg[NORMAL]        = "#f6f6f6"
#  bg[PRELIGHT]	    = "#ffffff"
#  fg[PRELIGHT]      = "#202020"
#  bg[ACTIVE]	    = "#d9d9d9"
#  bg[INSENSITIVE]   = "#d9d9d9"
#  bg[SELECTED]      = "#99a6bf"
#
#  base[SELECTED]    = "#6484a4"
#  text[SELECTED]    = "#ffffff"
#	#this is selected item without focus:
#  base[ACTIVE]      = "#b6c9cf"
#  text[INSENSITIVE] = "#757575"
#
#	#defaults
#  #base[NORMAL]  = "#b6c9cf"
#  #text[NORMAL]  = "#000000"
#
  engine "industrial"
  {
    # Set a hint to disable backward compatibility fallbacks.
    hint = "use-hints"
  }
}

# Style to apply an exterior forcus to GtkEntry
style "industrial-exterior-focus"
{
	GtkWidget::interior-focus = 0
	GtkWidget::focus-line-width = 0
}

# Add trough side details to GtkScale
style "industrial-scale"
{
	GtkRange::trough-side-details = 1
}

# Style for the entry progress bar -- ie. change the colors
style "industrial-entry"
{
  xthickness = 2
  ythickness = 2

  bg[SELECTED] = mix (0.4, @selected_bg_color, @base_color)
  fg[SELECTED] = @text_color
}

# generic squared buttons style, used for the tasklist (treeview is in the extra treeview style)
style "industrial-squared"
{
  engine "industrial"
  {
    rounded_buttons = FALSE
  }
}

style "industrial-wide"
{
  xthickness = 2
  ythickness = 2
}

# style to remove the border around the progress bar
style "industrial-progress"
{
  xthickness = 0
  ythickness = 0
}

# make scrollbar arrows lighter
style "industrial-arrows"
{
  fg[NORMAL] = mix (0.8, @fg_color, @bg_color)
}

# menuitems
style "industrial-menuitem"
{
  xthickness = 3
  ythickness = 3

  bg[PRELIGHT]  = @selected_bg_color
  bg[SELECTED]  = @selected_bg_color
  fg[PRELIGHT]  = @selected_fg_color
  fg[SELECTED]  = @selected_fg_color
}

style "industrial-menubar"
{
  xthickness = 3
  ythickness = 3
}

style "industrial-tree-header"
{
  engine "industrial"
  {
    hint = "treeview-header"
  }
  xthickness = 2
  ythickness = 2
}

style "industrial-tooltips"
{
  xthickness = 4
  ythickness = 4
  bg[NORMAL] = @tooltip_bg_color
  fg[NORMAL] = @tooltip_fg_color
}

style "industrial-druid"
{
  bg[SELECTED] = @selected_bg_color
}

style "metacity-frame"
{

	# Normal base color
 	bg[NORMAL]      = @bg_color

	# Unfocused title background color
	bg[INSENSITIVE]	= @bg_color

	# Unfocused title text color
	fg[INSENSITIVE]	= mix (0.2, @fg_color, @bg_color) # "#808080"

	# Focused icon color
	fg[NORMAL]	= mix (0.8, @fg_color, @bg_color) # same as scrollbar arrow color

	# Focused title background color
	bg[SELECTED]	= @selected_bg_color

	# Focused title text color
	fg[SELECTED]	= @selected_fg_color
}

style "industrial-spinbutton"
{
	engine "industrial"
	{
		hint	= "spinbutton"
	}
}

style "industrial-comboboxentry"
{
	engine "industrial"
	{
		hint	= "comboboxentry"
	}
}

# default style
class "GtkWidget" style "industrial-default"

# wide
class "GtkNotebook"   style "industrial-wide"
class "GtkButton"     style "industrial-wide"
class "GtkRange"      style "industrial-wide"
class "GtkMenu"       style "industrial-wide"
class "GtkFrame"      style "industrial-wide"
class "GtkStatusbar"  style "industrial-wide"
class "GtkEntry"      style "industrial-entry"

class "GtkEntry"      style "industrial-exterior-focus"
class "GtkSpinButton" style "industrial-spinbutton"
class "GtkScale"      style "industrial-scale"

class "GtkVScrollbar" style "industrial-arrows"
class "GtkHScrollbar" style "industrial-arrows"

widget_class "*<GtkComboBoxEntry>.*" style "industrial-comboboxentry"
widget_class "*<GtkCombo>.*" style "industrial-comboboxentry"

# treeview
widget_class "*.<GtkTreeView>.GtkButton" style "industrial-tree-header"
widget_class "*.<GtkList>.GtkButton"     style "industrial-tree-header"
widget_class "*.<GtkCList>.GtkButton"    style "industrial-tree-header"
widget_class "*.<ETree>.*"               style "industrial-tree-header"
widget_class "*.<ETable>.*"              style "industrial-tree-header"

# menuitems and interior
widget_class "*<GtkMenuItem>*" style "industrial-menuitem"

widget_class "*.<GtkProgress>"   style "industrial-progress"

# druide
widget_class "*GnomeDruidPage*" style "industrial-druid"

widget "gtk-tooltip*" style "industrial-tooltips"

widget "*.tasklist-button" style "industrial-squared"

class "MetaFrames" style "metacity-frame"

# Work around for http://bugzilla.gnome.org/show_bug.cgi?id=382646
# Note that the work around assumes that the combobox is _not_ in
# appears-as-list mode.
# This style does not affect GtkComboBoxEntry, it does have an effect
# on comboboxes in appears-as-list mode though.
style "industrial-text-is-fg-color-workaround"
{
	text[NORMAL]        = @fg_color
	text[PRELIGHT]      = @fg_color
	text[SELECTED]      = @selected_fg_color
	text[ACTIVE]        = @fg_color
	text[INSENSITIVE]   = darker (@bg_color)
}
widget_class "*.<GtkComboBox>.<GtkCellView>"   style "industrial-text-is-fg-color-workaround"

style "industrial-menuitem-text-is-fg-color-workaround"
{
	text[NORMAL]        = @fg_color
	text[PRELIGHT]      = @selected_fg_color
	text[SELECTED]      = @selected_fg_color
	text[ACTIVE]        = @fg_color
	text[INSENSITIVE]   = darker (@bg_color)
}
widget "*.gtk-combobox-popup-menu.*"   style "industrial-menuitem-text-is-fg-color-workaround"

# Work around the usage of GtkLabel inside GtkListItems to display text.
# This breaks because the label is shown on a background that is based on the
# base color set.
style "industrial-fg-is-text-color-workaround"
{
	fg[NORMAL]      = @text_color
	fg[PRELIGHT]    = @text_color
	fg[ACTIVE]      = @selected_fg_color
	fg[SELECTED]    = @selected_fg_color
	fg[INSENSITIVE] = darker (@bg_color)
}
widget_class "*<GtkListItem>*" style "industrial-fg-is-text-color-workaround"
# The same problem also exists for GtkCList and GtkCTree
# Only match GtkCList and not the parent widgets, because that would also change the headers.
widget_class "*<GtkCList>" style "industrial-fg-is-text-color-workaround"

Then I copied the Industrial-adwaita folder to /usr/share/themes, so it is used system-wide. Not perfect, but close enough:

The Gnumeric window used GTK3 Adwaita, while LibreOffice uses the modified Industrial GTK2 theme.