How modify Drag distance? (reduce it under 10 pixels)

Gentle_Hoatzin · August 16, 2025, 9:09am

Godot Version

4.5

Question

I am using the Godot implemented drag methods _get_drag_data(), _can_drag_data() and _drag_data() .
How can i modify the 10 pixels distance required to start a drag?
I would like 2 or 3 pixels at most.

mrcdk · August 17, 2025, 8:31am

It’s not possible, it’s hardcoded

github.com/godotengine/godot

scene/main/viewport.cpp

0c51ede24


      
          
          	Ref<InputEventMouseMotion> mm = p_event;
          	if (mm.is_valid()) {
          		Point2 mpos = mm->get_position();
          
          		// Drag & drop.
          		Viewport *section_root = get_section_root_viewport();
          		if (!gui.drag_attempted && gui.mouse_focus && section_root && !section_root->gui.global_dragging && (mm->get_button_mask().has_flag(MouseButtonMask::LEFT))) {
          			gui.drag_accum += mm->get_relative();
          			float len = gui.drag_accum.length();
          			if (len > 10) {
          				{ // Attempt grab, try parent controls too.
          					CanvasItem *ci = gui.mouse_focus;
          					while (ci) {
          						Control *control = Object::cast_to<Control>(ci);
          						if (control) {
          							section_root->gui.global_dragging = true;
          							section_root->gui.drag_data = control->get_drag_data(control->get_global_transform_with_canvas().affine_inverse().xform(mpos - gui.drag_accum));
          							if (section_root->gui.drag_data.get_type() != Variant::NIL) {
          								gui.mouse_focus = nullptr;
          								gui.mouse_focus_mask.clear();

But you can force a drag with Control.force_drag() instead.

Gentle_Hoatzin · August 17, 2025, 2:54pm

Thanks, i think i will just create a drag&drop system myself then. I can force drag, but if the player switch Keyboard for Gamepad.. then everything becomes messy and unreliable