From 3729e986a4e1f93b0a5209d61ede1dfe59019664 Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Sun, 13 Mar 2016 20:05:53 +1000
Subject: Different way of dealing with object popups, run a timer, check for
 mouse inactivity.

---
 src/extantz/extantz.c |  8 +++++
 src/extantz/extantz.h |  7 +++++
 src/extantz/scenri.c  | 82 +++++++++++++++++++++++++++++++++------------------
 3 files changed, 68 insertions(+), 29 deletions(-)

diff --git a/src/extantz/extantz.c b/src/extantz/extantz.c
index b5f272e..d20edb5 100644
--- a/src/extantz/extantz.c
+++ b/src/extantz/extantz.c
@@ -226,6 +226,7 @@ static void _on_resize(void *data, Evas *evas EINA_UNUSED, Evas_Object *obj EINA
 {
   globals *ourGlobals = data;
   GLData *gld = &ourGlobals->gld;
+  Scene_Data *scene = ourGlobals->scene;
   Evas_Coord h;
 
   efl_gfx_size_get(ourGlobals->win, &ourGlobals->win_w, &ourGlobals->win_h);
@@ -237,6 +238,13 @@ static void _on_resize(void *data, Evas *evas EINA_UNUSED, Evas_Object *obj EINA
   efl_gfx_size_set(ourGlobals->win, ourGlobals->win_w, h);
   // Stop internal windows going under the toolbar.
   evas_object_resize(ourGlobals->mainWindow->layout, ourGlobals->win_w, h);
+
+  if (scene)
+  {
+    evas_object_geometry_get(scene->image_e, &scene->x, &scene->y, &scene->w, &scene->h);
+    evas_canvas3d_scene_size_get(scene->scene, &scene->scene_w, &scene->scene_h);
+  }
+
 #if USE_EPHYSICS
   if (ourGlobals->world)
     ephysics_world_render_geometry_set(ourGlobals->world, 0, 0, -50, ourGlobals->win_w, ourGlobals->win_h, 100);
diff --git a/src/extantz/extantz.h b/src/extantz/extantz.h
index ea22879..2930642 100644
--- a/src/extantz/extantz.h
+++ b/src/extantz/extantz.h
@@ -139,6 +139,13 @@ typedef struct _Scene_Data
 {
   Evas             *evas;
   Evas_Object      *image, *image_e;		// Our Elm image, and it's Evas image.
+
+  Evas_Coord       x, y, w, h;			// Position and size of our render image.
+  int              scene_w, scene_h;		// Size of the scene.
+
+  int              tick;			// For tracking mouse movements for tooltips.
+  Evas_Coord       mouse_x, mouse_y;
+
   Eo    *scene;
   Eo     *root_node;
   Eo     *camera_node;
diff --git a/src/extantz/scenri.c b/src/extantz/scenri.c
index a487d47..7662a96 100644
--- a/src/extantz/scenri.c
+++ b/src/extantz/scenri.c
@@ -136,46 +136,69 @@ Eina_Bool animateScene(globals *ourGlobals)
   return EINA_TRUE;
 }
 
-static void _on_mouse_move(void *data, Evas *e EINA_UNUSED, Evas_Object *o, void *einfo)
+static Eina_Bool _tourGuide(void *data)
 {
   Scene_Data *scene = data;
-  Evas_Event_Mouse_Move *ev = einfo;
-  Evas_Coord x, y, w, h;
-  Evas_Coord obj_x, obj_y;
-  int scene_w, scene_h;
-  Evas_Real scene_x, scene_y;
-  Evas_Real s, t;
-  Eo *n;
-  Eo *m;
-  Eina_Bool pick;
-  char *name = NULL;
 
-  evas_object_geometry_get(o, &x, &y, &w, &h);
+  if (0 < scene->tick)		// Mouse has moved since last time we checked.
+    scene->tick = 0;
+  else if (0 == scene->tick)	// Mouse has not moved since last time we checked.
+  {
+    Evas_Coord obj_x, obj_y;
+    Evas_Real scene_x, scene_y;
+    Evas_Real s, t;
+    Eo *n;
+    Eo *m;
+    Eina_Bool pick;
+    char *name = NULL;
+
+    scene->tick--;		// Only do this once.
+
+    // Subtract image position from mouse coords.  Cancel any offset.
+    obj_x = scene->mouse_x - scene->x;
+    obj_y = scene->mouse_y - scene->y;
+
+    // Multiply the adjusted mouse coords by the ratio of widths.
+    scene_x = obj_x * scene->scene_w / (Evas_Real)scene->w;
+    scene_y = obj_y * scene->scene_h / (Evas_Real)scene->h;
+
+    // Figure out what that points to.
+    pick = evas_canvas3d_scene_pick(scene->scene, scene_x, scene_y, &n, &m, &s, &t);
+    if (pick)
+      name = evas_object_data_get(n, "Name");
+    // This is a raw Evas callback, on the Elm image internal Evas_Object.
+    // So we need to get the Elm Image back from the raw Evas_Object.
+    // Which is why we stuffed it in the scene structure.
+    if (name)
+    {
+      elm_object_tooltip_text_set(scene->image, name);
+      elm_object_tooltip_show(scene->image);
+    }
+    else
+    {
+      elm_object_tooltip_text_set(scene->image, "");
+      elm_object_tooltip_hide(scene->image);
+    }
+  }
 
-  obj_x = ev->cur.canvas.x - x;
-  obj_y = ev->cur.canvas.y - y;
+  return ECORE_CALLBACK_RENEW;
+}
 
-  eo_do(scene->scene, evas_canvas3d_scene_size_get(&scene_w, &scene_h));
+static void _on_mouse_move(void *data, Evas *e EINA_UNUSED, Evas_Object *o, void *einfo)
+{
+  Scene_Data *scene = data;
+  Evas_Event_Mouse_Move *ev = einfo;
 
-  scene_x = obj_x * scene_w / (Evas_Real)w;
-  scene_y = obj_y * scene_h / (Evas_Real)h;
+  scene->mouse_x = ev->cur.canvas.x;
+  scene->mouse_y = ev->cur.canvas.y;
 
-  eo_do(scene->scene, pick = evas_canvas3d_scene_pick(scene_x, scene_y, &n, &m, &s, &t));
-  if (pick)
-    name = evas_object_data_get(n, "Name");
-  // This is a raw Evas callback, on the Elm image internal Evas_Object.
-  // So we need to get the Elm Image back from the raw Evas_Object.
-  // Which is why we stuffed it in the scene structure.
-  if (name)
-  {
-    elm_object_tooltip_text_set(scene->image, name);
-    elm_object_tooltip_show(scene->image);
-  }
-  else
+  if (0 == scene->tick)	// First move.
   {
     elm_object_tooltip_text_set(scene->image, "");
     elm_object_tooltip_hide(scene->image);
   }
+  // Mark mouse as having moved.
+  scene->tick++;
 }
 
 static void _on_mouse_down(void *data, Evas *e EINA_UNUSED, Evas_Object *o, void *einfo)
@@ -456,6 +479,7 @@ Scene_Data *scenriAdd(Evas_Object *win)
   // Action?
   elm_object_tooltip_text_set(scene->image, "");
   elm_object_tooltip_hide(scene->image);
+  ecore_timer_add(0.2, _tourGuide, scene);
 
 #if USE_ELM_IMG
   evas_obj_image_scene_set(scene->image_e, scene->scene);
-- 
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