First patch of the LockableColorPicker tool.

Still Work In Progress, but can be used without too much hassle.

rtgui/imagearea.cc

@@ -178,7 +178,6 @@ CropWindow* ImageArea::getCropWindow (int x, int y)
     return cw;
 }
 
-
 void ImageArea::redraw ()
 {
     // dirty prevents multiple updates queued up
@@ -188,6 +187,11 @@ void ImageArea::redraw ()
     }
 }
 
+void ImageArea::switchPickerVisibility (bool isVisible)
+{
+    redraw();
+}
+
 bool ImageArea::on_expose_event(GdkEventExpose* event)
 {
     dirty = false;
@@ -690,6 +694,16 @@ ToolMode ImageArea::getToolMode ()
     }
 }
 
+bool ImageArea::showColorPickers ()
+{
+
+    if (listener && listener->getToolBar()) {
+        return listener->getToolBar()->showColorPickers ();
+    } else {
+        return false;
+    }
+}
+
 void ImageArea::setToolHand ()
 {