From 0d8ae565f257609b9cf60cb8566ac6f465a10130 Mon Sep 17 00:00:00 2001
From: jp9000 <obs.jim@gmail.com>
Date: Sun, 22 Mar 2015 20:28:27 -0700
Subject: [PATCH] libobs: Add API to hide/show scene items

---
 libobs/obs-scene.c | 38 ++++++++++++++++++++++++++++++++++----
 libobs/obs.h       |  3 +++
 2 files changed, 37 insertions(+), 4 deletions(-)

diff --git a/libobs/obs-scene.c b/libobs/obs-scene.c
index b418ff580..2281d0ff8 100644
--- a/libobs/obs-scene.c
+++ b/libobs/obs-scene.c
@@ -24,6 +24,7 @@ static const char *obs_scene_signals[] = {
 	"void item_add(ptr scene, ptr item)",
 	"void item_remove(ptr scene, ptr item)",
 	"void reorder(ptr scene)",
+	"void item_visible(ptr scene, ptr item, bool visible)",
 	"void item_select(ptr scene, ptr item)",
 	"void item_deselect(ptr scene, ptr item)",
 	"void item_transform(ptr scene, ptr item)",
@@ -321,10 +322,12 @@ static void scene_video_render(void *data, gs_effect_t *effect)
 		if (source_size_changed(item))
 			update_item_transform(item);
 
-		gs_matrix_push();
-		gs_matrix_mul(&item->draw_transform);
-		obs_source_video_render(item->source);
-		gs_matrix_pop();
+		if (item->visible) {
+			gs_matrix_push();
+			gs_matrix_mul(&item->draw_transform);
+			obs_source_video_render(item->source);
+			gs_matrix_pop();
+		}
 
 		item = item->next;
 	}
@@ -924,3 +927,30 @@ void obs_sceneitem_get_box_transform(const obs_sceneitem_t *item,
 	if (item)
 		matrix4_copy(transform, &item->box_transform);
 }
+
+bool obs_sceneitem_visible(const obs_sceneitem_t *item)
+{
+	return item ? item->visible : false;
+}
+
+void obs_sceneitem_set_visible(obs_sceneitem_t *item, bool visible)
+{
+	struct calldata cd = {0};
+
+	if (!item)
+		return;
+
+	item->visible = visible;
+
+	if (!item->parent)
+		return;
+
+	calldata_set_ptr(&cd, "scene", item->parent);
+	calldata_set_ptr(&cd, "item", item);
+	calldata_set_bool(&cd, "visible", visible);
+
+	signal_handler_signal(item->parent->source->context.signals,
+			"item_visible", &cd);
+
+	calldata_free(&cd);
+}
diff --git a/libobs/obs.h b/libobs/obs.h
index d8793d49f..4dd99337c 100644
--- a/libobs/obs.h
+++ b/libobs/obs.h
@@ -1043,6 +1043,9 @@ EXPORT void obs_sceneitem_get_draw_transform(const obs_sceneitem_t *item,
 EXPORT void obs_sceneitem_get_box_transform(const obs_sceneitem_t *item,
 		struct matrix4 *transform);
 
+EXPORT bool obs_sceneitem_visible(const obs_sceneitem_t *item);
+EXPORT void obs_sceneitem_set_visible(obs_sceneitem_t *item, bool visible);
+
 
 /* ------------------------------------------------------------------------- */
 /* Outputs */