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-rw-r--r--src/window.cpp19
-rw-r--r--src/window_gui.h7
2 files changed, 26 insertions, 0 deletions
diff --git a/src/window.cpp b/src/window.cpp
index 447f247d6..9fa5655ae 100644
--- a/src/window.cpp
+++ b/src/window.cpp
@@ -1382,6 +1382,24 @@ static bool HandleDragDrop()
return false;
}
+static bool HandleMouseDrag()
+{
+ if (_special_mouse_mode != WSM_DRAGDROP) return true;
+ if (!_left_button_down || (_cursor.delta.x == 0 && _cursor.delta.y == 0)) return true;
+
+ Window *w = GetCallbackWnd();
+
+ if (w != NULL) {
+ /* Send an event in client coordinates. */
+ Point pt;
+ pt.x = _cursor.pos.x - w->left;
+ pt.y = _cursor.pos.y - w->top;
+ w->OnMouseDrag(pt, GetWidgetFromPos(w, pt.x, pt.y));
+ }
+
+ return false;
+}
+
static bool HandleMouseOver()
{
Window *w = FindWindowFromPt(_cursor.pos.x, _cursor.pos.y);
@@ -2057,6 +2075,7 @@ static void MouseLoop(MouseClick click, int mousewheel)
UpdateTileSelection();
if (!VpHandlePlaceSizingDrag()) return;
+ if (!HandleMouseDrag()) return;
if (!HandleDragDrop()) return;
if (!HandleWindowDragging()) return;
if (!HandleScrollbarScrolling()) return;
diff --git a/src/window_gui.h b/src/window_gui.h
index 4e64cc5df..55a223581 100644
--- a/src/window_gui.h
+++ b/src/window_gui.h
@@ -657,6 +657,13 @@ public:
virtual void OnRightClick(Point pt, int widget) {}
/**
+ * An 'object' is being dragged at the provided position, highlight the target if possible.
+ * @param pt The point inside the window that the mouse hovers over.
+ * @param widget The widget the mouse hovers over.
+ */
+ virtual void OnMouseDrag(Point pt, int widget) {}
+
+ /**
* A dragged 'object' has been released.
* @param pt the point inside the window where the release took place.
* @param widget the widget where the release took place.