brushmodifier: improve tooltips for advanced users

Make the tooltips explain what the buttons do in terms advanced users
can understand without requiring trial and error. Retain existing
glosses for newer or less advanced users.

diff --git a/gui/brushmodifier.py b/gui/brushmodifier.py
index 71d86c0..93146d8 100644 (file)
--- a/gui/brushmodifier.py
+++ b/gui/brushmodifier.py
@@ -53,10 +53,10 @@ class BrushModifier:
                 None, _("Paint normally"),
                 self.blend_mode_normal_cb, True),
             ('BlendModeEraser', stock.BRUSH_BLEND_MODE_ERASER, None,
-                None, _("Erase strokes quickly with the current brush"),
+                None, _("Eraser Mode: remove strokes using the current brush"),
                 self.blend_mode_eraser_cb),
             ('BlendModeLockAlpha', stock.BRUSH_BLEND_MODE_ALPHA_LOCK, None,
-                None, _("Paint over existing strokes only"),
+                None, _("Lock Alpha: paint over existing strokes only, using the current brush"),
                 self.blend_mode_lock_alpha_cb),
             ]
         ag.add_toggle_actions(toggle_actions)