private Insets getButtonInsets(SynthContext context, Insets insets) {
// The following calculations are derived from gtkbutton.c
// (GTK+ version 2.8.20), gtk_button_size_allocate() method.
int CHILD_SPACING = 1;
int focusSize = getClassSpecificIntValue(context, "focus-line-width", 1);
int focusPad = getClassSpecificIntValue(context, "focus-padding", 1);
int xThickness = getXThickness();
int yThickness = getYThickness();
int w = focusSize + focusPad + xThickness + CHILD_SPACING;
int h = focusSize + focusPad + yThickness + CHILD_SPACING;
insets.left = insets.right = w;
insets.top = insets.bottom = h;
Component component = context.getComponent();
if ((component instanceof JButton)
&& !(component.getParent() instanceof JToolBar)
&& ((JButton) component).isDefaultCapable()) {
// Include the default border insets, but only for JButtons
// that are default capable. Note that
// JButton.getDefaultCapable() returns true by default, but
// GtkToolButtons are never default capable, so we skip this
// step if the button is contained in a toolbar.
Insets defaultInsets =
getClassSpecificInsetsValue(context, "default-border", BUTTON_DEFAULT_BORDER_INSETS);
insets.left += defaultInsets.left;
insets.right += defaultInsets.right;
insets.top += defaultInsets.top;
insets.bottom += defaultInsets.bottom;
}
return insets;
}
// Overridden for performance reasons. ---->
@Override
public boolean isOpaque() {
Color back = getBackground();
Component p = getParent();
if (Objects.nonNull(p)) {
p = p.getParent();
} // p should now be the JTable.
boolean colorMatch =
Objects.nonNull(back)
&& Objects.nonNull(p)
&& back.equals(p.getBackground())
&& p.isOpaque();
return !colorMatch && super.isOpaque();
}