private Icon getIcon(SynthContext context) {
if (context != null) {
ComponentOrientation co = context.getComponent().getComponentOrientation();
SynthStyle style = context.getStyle();
if (style != this.style) {
this.style = style;
loadedLTR = loadedRTL = false;
}
if (co == null || co.isLeftToRight()) {
if (!loadedLTR) {
loadedLTR = true;
ltrIcon = ((GTKStyle) context.getStyle()).getStockIcon(context, key, size);
}
return ltrIcon;
} else if (!loadedRTL) {
loadedRTL = true;
rtlIcon = ((GTKStyle) context.getStyle()).getStockIcon(context, key, size);
}
return rtlIcon;
}
return ltrIcon;
}
private Icon getStockIcon(SynthContext context, String key, int type) {
TextDirection direction = TextDirection.LTR;
if (context != null) {
ComponentOrientation co = context.getComponent().getComponentOrientation();
if (co != null && !co.isLeftToRight()) {
direction = TextDirection.RTL;
}
}
// First try loading a theme-specific icon using the native
// GTK libraries (native GTK handles the resizing for us).
Icon icon = getStyleSpecificIcon(key, direction, type);
if (icon != null) {
return icon;
}
// In a failure case where native GTK (unexpectedly) returns a
// null icon, we can try loading a default icon as a fallback.
String propName =
ICON_PROPERTY_PREFIX
+ key
+ '.'
+ type
+ '.'
+ (direction == TextDirection.RTL ? "rtl" : "ltr");
Image img = (Image) Toolkit.getDefaultToolkit().getDesktopProperty(propName);
if (img != null) {
return new ImageIcon(img);
}
// In an extreme failure situation, just return null (callers are
// already prepared to handle a null icon, so the worst that can
// happen is that an icon won't be included in the button/dialog).
return null;
}