ecore-evas/buffer: implement ignore_events method

Summary:
this is a simple implementation of ignore_events functionality which
sets pass_events if it's an image or prevents the emission of events
in other cases

the result should be that no user events are received. this deliberately
does not block the triggering of resize callbacks as in the original ticket
since this guarantees broken functionality and is just not a good idea

fix T4700

Reviewers: devilhorns, Hermet

Reviewed By: Hermet

Subscribers: Hermet, cedric, #reviewers, #committers

Tags: #efl_display_system

Maniphest Tasks: T4700

Differential Revision: https://phab.enlightenment.org/D6876

1 files changed, 23 insertions, 2 deletions

diff --git a/src/lib/ecore_evas/ecore_evas_buffer.c b/src/lib/ecore_evas/ecore_evas_buffer.c
index cad4999337..59cd5aeb63 100644
--- a/src/lib/ecore_evas/ecore_evas_buffer.c
+++ b/src/lib/ecore_evas/ecore_evas_buffer.c
@@ -111,6 +111,17 @@ _ecore_evas_move_resize(Ecore_Evas *ee, int x EINA_UNUSED, int y EINA_UNUSED, in
 }
 
 static void
+_ecore_evas_buffer_ignore_events_set(Ecore_Evas *ee, int val)
+{
+   Ecore_Evas_Engine_Buffer_Data *bdata = ee->engine.data;
+
+   if (ee->ignore_events == val) return;
+   ee->ignore_events = val;
+   if (bdata->image)
+     evas_object_pass_events_set(bdata->image, val);
+}
+
+static void
 _ecore_evas_show(Ecore_Evas *ee)
 {
    Ecore_Evas_Engine_Buffer_Data *bdata = ee->engine.data;
@@ -272,6 +283,7 @@ _ecore_evas_buffer_cb_mouse_in(void *data, Evas *e, Evas_Object *obj EINA_UNUSED
    ee = data;
    ev = event_info;
    if (!ee->evas) return;
+   if (ee->ignore_events) return;
    _ecore_evas_buffer_transfer_modifiers_locks(e, ee->evas);
    evas_event_feed_mouse_in(ee->evas, ev->timestamp, NULL);
 }
@@ -285,6 +297,7 @@ _ecore_evas_buffer_cb_mouse_out(void *data, Evas *e, Evas_Object *obj EINA_UNUSE
    ee = data;
    ev = event_info;
    if (!ee->evas) return;
+   if (ee->ignore_events) return;
    _ecore_evas_buffer_transfer_modifiers_locks(e, ee->evas);
    evas_event_feed_mouse_out(ee->evas, ev->timestamp, NULL);
 }
@@ -298,6 +311,7 @@ _ecore_evas_buffer_cb_mouse_down(void *data, Evas *e, Evas_Object *obj EINA_UNUS
    ee = data;
    ev = event_info;
    if (!ee->evas) return;
+   if (ee->ignore_events) return;
    _ecore_evas_buffer_transfer_modifiers_locks(e, ee->evas);
    evas_event_feed_mouse_down(ee->evas, ev->button, ev->flags, ev->timestamp, NULL);
 }
@@ -311,6 +325,7 @@ _ecore_evas_buffer_cb_mouse_up(void *data, Evas *e, Evas_Object *obj EINA_UNUSED
    ee = data;
    ev = event_info;
    if (!ee->evas) return;
+   if (ee->ignore_events) return;
    _ecore_evas_buffer_transfer_modifiers_locks(e, ee->evas);
    evas_event_feed_mouse_up(ee->evas, ev->button, ev->flags, ev->timestamp, NULL);
 }
@@ -341,6 +356,7 @@ _ecore_evas_buffer_cb_mouse_wheel(void *data, Evas *e, Evas_Object *obj EINA_UNU
    ee = data;
    ev = event_info;
    if (!ee->evas) return;
+   if (ee->ignore_events) return;
    _ecore_evas_buffer_transfer_modifiers_locks(e, ee->evas);
    evas_event_feed_mouse_wheel(ee->evas, ev->direction, ev->z, ev->timestamp, NULL);
 }
@@ -360,6 +376,7 @@ _ecore_evas_buffer_cb_multi_down(void *data, Evas *e, Evas_Object *obj EINA_UNUS
    xx = x;
    yy = y;
    if (!ee->evas) return;
+   if (ee->ignore_events) return;
    _ecore_evas_buffer_coord_translate(ee, &x, &y);
    xf = (ev->canvas.xsub - (double)xx) + (double)x;
    yf = (ev->canvas.ysub - (double)yy) + (double)y;
@@ -382,6 +399,7 @@ _ecore_evas_buffer_cb_multi_up(void *data, Evas *e, Evas_Object *obj EINA_UNUSED
    xx = x;
    yy = y;
    if (!ee->evas) return;
+   if (ee->ignore_events) return;
    _ecore_evas_buffer_coord_translate(ee, &x, &y);
    xf = (ev->canvas.xsub - (double)xx) + (double)x;
    yf = (ev->canvas.ysub - (double)yy) + (double)y;
@@ -404,6 +422,7 @@ _ecore_evas_buffer_cb_multi_move(void *data, Evas *e, Evas_Object *obj EINA_UNUS
    xx = x;
    yy = y;
    if (!ee->evas) return;
+   if (ee->ignore_events) return;
    _ecore_evas_buffer_coord_translate(ee, &x, &y);
    xf = (ev->cur.canvas.xsub - (double)xx) + (double)x;
    yf = (ev->cur.canvas.ysub - (double)yy) + (double)y;
@@ -429,6 +448,7 @@ _ecore_evas_buffer_cb_key_down(void *data, Evas *e, Evas_Object *obj EINA_UNUSED
    ee = data;
    ev = event_info;
    if (!ee->evas) return;
+   if (ee->ignore_events) return;
    _ecore_evas_buffer_transfer_modifiers_locks(e, ee->evas);
    evas_event_feed_key_down(ee->evas, ev->keyname, ev->key, ev->string, ev->compose, ev->timestamp, NULL);
 }
@@ -442,6 +462,7 @@ _ecore_evas_buffer_cb_key_up(void *data, Evas *e, Evas_Object *obj EINA_UNUSED,
    ee = data;
    ev = event_info;
    if (!ee->evas) return;
+   if (ee->ignore_events) return;
    _ecore_evas_buffer_transfer_modifiers_locks(e, ee->evas);
    evas_event_feed_key_up(ee->evas, ev->keyname, ev->key, ev->string, ev->compose, ev->timestamp, NULL);
 }
@@ -589,7 +610,7 @@ _ecore_evas_buffer_pointer_warp(const Ecore_Evas *ee, Evas_Coord x, Evas_Coord y
 
    if (bdata->image)
      _ecore_evas_mouse_move_process((Ecore_Evas*)ee, x, y, (unsigned int)((unsigned long long)(ecore_time_get() * 1000.0) & 0xffffffff));
-   else
+   else if (!ee->ignore_events)
      {
         Ecore_Event_Mouse_Move *ev;
 
@@ -683,7 +704,7 @@ static Ecore_Evas_Engine_Func _ecore_buffer_engine_func =
      NULL,
      NULL,
      NULL,
-     NULL,
+     _ecore_evas_buffer_ignore_events_set,
      _ecore_evas_buffer_alpha_set,
      NULL, //transparent
      NULL, // profiles_set