I really do not know why such an issue hasn't been fixed. I do not care who is responsible for the uglyness of Eclipse on Linux but unfortunately this is a fact. After some search I found a solution.
That is to change the .gtk2rc (or something like that) file on your home directory to something like...
style "gtkcompact" {
font_name="Sans 8"
GtkButton::default_border={0,0,0,0}
GtkButton::default_outside_border={0,0,0,0}
GtkButtonBox::child_min_width=0
GtkButtonBox::child_min_heigth=0
GtkButtonBox::child_internal_pad_x=0
GtkButtonBox::child_internal_pad_y=0
GtkMenu::vertical-padding=1
GtkMenuBar::internal_padding=0
GtkMenuItem::horizontal_padding=4
GtkToolbar::internal-padding=0
GtkToolbar::space-size=0
GtkOptionMenu::indicator_size=0
GtkOptionMenu::indicator_spacing=0
GtkPaned::handle_size=4
GtkRange::trough_border=0
GtkRange::stepper_spacing=0
GtkScale::value_spacing=0
GtkScrolledWindow::scrollbar_spacing=0
GtkExpander::expander_size=10
GtkExpander::expander_spacing=0
GtkTreeView::vertical-separator=0
GtkTreeView::horizontal-separator=0
GtkTreeView::expander-size=10
GtkTreeView::fixed-height-mode=TRUE
GtkWidget::focus_padding=0
}
class "GtkWidget" style "gtkcompact"
style "gtkcompactextra" {
xthickness=0
ythickness=0
}
class "GtkButton" style "gtkcompactextra"
class "GtkToolbar" style "gtkcompactextra"
class "GtkPaned" style "gtkcompactextra"And yes! You will have a much pretier Eclipse and a real ungly gnome desktop! So lets rename the file to something like gtkrc4eclipse. Now instead of using the eclipse executable it self we will create a small bash script to execute it:
#!/bin/sh
export MY_ECLIPSE_GTKRC=/path/to/gtkrc4eclipse
export GTK_RC_FILES=$GTK_RC_FILES:$MY_ECLIPSE_GTKRC
export GTK2_RC_FILES=$GTK2_RC_FILES:$MY_ECLIPSE_GTKRC
export JAVA_HOME
/path/to/current/eclipse &