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DnD: Stop using captured_event in Mutter 42 (#1468)
This commit is contained in:
David Hewitt
GitHub
parent
a12c1a1c47
commit
47c4e8346b
@ -103,6 +103,13 @@ namespace Gala {
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float last_x;
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float last_y;
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#if HAS_MUTTER42
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Grab? grab = null;
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static unowned Actor? grabbed_actor = null;
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InputDevice? grabbed_device = null;
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ulong on_event_id = 0;
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#endif
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/**
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* Create a new DragDropAction
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*
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@ -141,7 +148,9 @@ namespace Gala {
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void release_actor (Actor actor) {
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if (DragDropActionType.SOURCE in drag_type) {
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#if !HAS_MUTTER42
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actor.button_press_event.disconnect (source_clicked);
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#endif
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var source_list = sources.@get (drag_id);
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source_list.remove (actor);
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@ -155,7 +164,9 @@ namespace Gala {
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void connect_actor (Actor actor) {
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if (DragDropActionType.SOURCE in drag_type) {
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#if !HAS_MUTTER42
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actor.button_press_event.connect (source_clicked);
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#endif
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var source_list = sources.@get (drag_id);
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if (source_list == null) {
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@ -182,6 +193,190 @@ namespace Gala {
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destination_crossed (destination, is_hovered);
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}
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#if HAS_MUTTER42
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public override bool handle_event (Event event) {
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switch (event.get_type ()) {
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case EventType.BUTTON_PRESS:
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if (event.get_button () != 1) {
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actor_clicked (event.get_button ());
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return false;
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}
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if (grabbed_actor != null) {
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return false;
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}
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grab_actor (actor, event.get_device ());
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clicked = true;
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float x, y;
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event.get_coords (out x, out y);
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last_x = x;
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last_y = y;
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return true;
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case EventType.BUTTON_RELEASE:
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if (!dragging) {
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float x, y, ex, ey;
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event.get_coords (out ex, out ey);
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actor.get_transformed_position (out x, out y);
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// release has happened within bounds of actor
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if (x < ex && x + actor.width > ex && y < ey && y + actor.height > ey) {
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actor_clicked (event.get_button ());
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}
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ungrab_actor ();
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clicked = false;
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dragging = false;
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return true;
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} else if (dragging) {
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if (hovered != null) {
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finish ();
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} else {
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cancel ();
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}
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return true;
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}
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break;
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default:
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break;
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}
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return base.handle_event (event);
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}
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void grab_actor (Actor actor, InputDevice device) {
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if (grabbed_actor != null) {
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critical ("Tried to grab an actor with a grab already in progress");
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}
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grab = actor.get_stage ().grab (actor);
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grabbed_actor = actor;
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grabbed_device = device;
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on_event_id = actor.event.connect (on_event);
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}
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void ungrab_actor () {
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if (on_event_id == 0 || grabbed_actor == null) {
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return;
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}
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if (grab != null) {
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grab.dismiss ();
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grab = null;
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}
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grabbed_device = null;
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grabbed_actor.disconnect (on_event_id);
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on_event_id = 0;
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grabbed_actor = null;
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}
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bool on_event (Clutter.Event event) {
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var device = event.get_device ();
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if (grabbed_device != null &&
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device != grabbed_device &&
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device.get_device_type () != InputDeviceType.KEYBOARD_DEVICE) {
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return false;
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}
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switch (event.get_type ()) {
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case EventType.KEY_PRESS:
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if (event.get_key_symbol () == Key.Escape) {
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cancel ();
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}
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break;
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case EventType.MOTION:
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float x, y;
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event.get_coords (out x, out y);
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if (!dragging && clicked) {
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var drag_threshold = Clutter.Settings.get_default ().dnd_drag_threshold;
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if (Math.fabsf (last_x - x) > drag_threshold || Math.fabsf (last_y - y) > drag_threshold) {
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handle = drag_begin (x, y);
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if (handle == null) {
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ungrab_actor ();
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critical ("No handle has been returned by the started signal, aborting drag.");
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return false;
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}
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clicked = false;
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dragging = true;
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ungrab_actor ();
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grab_actor (handle, event.get_device ());
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handle.reactive = false;
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var source_list = sources.@get (drag_id);
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if (source_list != null) {
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var dest_list = destinations[drag_id];
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foreach (var actor in source_list) {
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// Do not unset reactivity on destinations
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if (dest_list == null || actor in dest_list) {
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continue;
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}
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actor.reactive = false;
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}
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}
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}
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return true;
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} else if (dragging) {
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handle.x -= last_x - x;
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handle.y -= last_y - y;
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last_x = x;
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last_y = y;
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var stage = actor.get_stage ();
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var actor = stage.get_actor_at_pos (PickMode.REACTIVE, (int) x, (int) y);
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DragDropAction action = null;
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// if we're allowed to bubble and this actor is not a destination, check its parents
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if (actor != null && (action = get_drag_drop_action (actor)) == null && allow_bubbling) {
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while ((actor = actor.get_parent ()) != stage) {
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if ((action = get_drag_drop_action (actor)) != null)
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break;
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}
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}
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// didn't change, no need to do anything
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if (actor == hovered)
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return true;
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if (action == null) {
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// apparently we left ours if we had one before
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if (hovered != null) {
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emit_crossed (hovered, false);
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hovered = null;
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}
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return true;
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}
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// signal the previous one that we left it
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if (hovered != null) {
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emit_crossed (hovered, false);
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}
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// tell the new one that it is hovered
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hovered = actor;
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emit_crossed (hovered, true);
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return true;
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}
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break;
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}
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return false;
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}
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#else
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bool source_clicked (ButtonEvent event) {
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if (event.button != 1) {
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actor_clicked (event.button);
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@ -314,6 +509,7 @@ namespace Gala {
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return false;
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}
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#endif
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/**
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* Looks for a DragDropAction instance if this actor has one or NULL.
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@ -382,8 +578,13 @@ namespace Gala {
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}
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}
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if (dragging)
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if (dragging) {
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#if HAS_MUTTER42
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ungrab_actor ();
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#else
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actor.get_stage ().captured_event.disconnect (follow_move);
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#endif
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}
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dragging = false;
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}
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@ -464,6 +464,10 @@ public class Gala.WindowClone : Clutter.Actor {
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}
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public override bool enter_event (Clutter.CrossingEvent event) {
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if (drag_action.dragging) {
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return false;
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}
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close_button.opacity = in_slot_animation ? 0 : 255;
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window_title.opacity = in_slot_animation ? 0 : 255;
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return false;
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