Support smooth scrolling (part 2)

Fix scrolling when smooth scrolling is enabled /
allow to scroll smoothly for:
- canvas palette
- node selection in path tool
- selection cycling in select tool while holding Alt key
- spraying in spray tool with mouse wheel
- adjusting color by scrolling in lower left stroke/fill fields

1 files changed, 2 insertions, 1 deletions

diff --git a/src/ui/tools/spray-tool.cpp b/src/ui/tools/spray-tool.cpp
index cf677ff0c..c56bceda4 100644
--- a/src/ui/tools/spray-tool.cpp
+++ b/src/ui/tools/spray-tool.cpp
@@ -1304,7 +1304,8 @@ bool SprayTool::root_handler(GdkEvent* event) {
                 
                 switch (event->scroll.direction) {
                     case GDK_SCROLL_DOWN:
-                    case GDK_SCROLL_UP: {
+                    case GDK_SCROLL_UP:
+                    case GDK_SCROLL_SMOOTH: {
                         if (Inkscape::have_viable_layer(desktop, this->message_context) == false) {
                             return TRUE;
                         }