From b2ca50054504e5a8db6a6940af2da99b49c95486 Mon Sep 17 00:00:00 2001
From: Yakov Borevich <j.borevich@gmail.com>
Date: Wed, 9 Aug 2017 10:53:38 +0300
Subject: [PATCH] Add expand stretch/ascpect - no more black bars

---
 main/main.cpp             | 4 +++-
 scene/main/scene_tree.cpp | 9 ++++-----
 scene/main/scene_tree.h   | 1 +
 3 files changed, 8 insertions(+), 6 deletions(-)

diff --git a/main/main.cpp b/main/main.cpp
index 9376d832046..f23da57185b 100644
--- a/main/main.cpp
+++ b/main/main.cpp
@@ -1275,6 +1275,8 @@ bool Main::start() {
 				sml_aspect = SceneTree::STRETCH_ASPECT_KEEP_WIDTH;
 			else if (stretch_aspect == "keep_height")
 				sml_aspect = SceneTree::STRETCH_ASPECT_KEEP_HEIGHT;
+			else if (stretch_aspect == "expand")
+				sml_aspect = SceneTree::STRETCH_ASPECT_EXPAND;
 
 			sml->set_screen_stretch(sml_sm, sml_aspect, stretch_size, stretch_shrink);
 
@@ -1302,7 +1304,7 @@ bool Main::start() {
 			GLOBAL_DEF("display/window/stretch/mode", "disabled");
 			ProjectSettings::get_singleton()->set_custom_property_info("display/window/stretch/mode", PropertyInfo(Variant::STRING, "display/window/stretch/mode", PROPERTY_HINT_ENUM, "disabled,2d,viewport"));
 			GLOBAL_DEF("display/window/stretch/aspect", "ignore");
-			ProjectSettings::get_singleton()->set_custom_property_info("display/window/stretch/aspect", PropertyInfo(Variant::STRING, "display/window/stretch/aspect", PROPERTY_HINT_ENUM, "ignore,keep,keep_width,keep_height"));
+			ProjectSettings::get_singleton()->set_custom_property_info("display/window/stretch/aspect", PropertyInfo(Variant::STRING, "display/window/stretch/aspect", PROPERTY_HINT_ENUM, "ignore,keep,keep_width,keep_height,expand"));
 			GLOBAL_DEF("display/window/stretch/shrink", 1);
 			ProjectSettings::get_singleton()->set_custom_property_info("display/window/stretch/shrink", PropertyInfo(Variant::STRING, "display/window/stretch/shrink", PROPERTY_HINT_RANGE, "1,8,1"));
 			sml->set_auto_accept_quit(GLOBAL_DEF("application/config/auto_accept_quit", true));
diff --git a/scene/main/scene_tree.cpp b/scene/main/scene_tree.cpp
index d800c24e108..d528abbcc57 100644
--- a/scene/main/scene_tree.cpp
+++ b/scene/main/scene_tree.cpp
@@ -1181,7 +1181,7 @@ void SceneTree::_update_root_rect() {
 	} else if (viewport_aspect < video_mode_aspect) {
 		// screen ratio is smaller vertically
 
-		if (stretch_aspect == STRETCH_ASPECT_KEEP_HEIGHT) {
+		if (stretch_aspect == STRETCH_ASPECT_KEEP_HEIGHT || stretch_aspect == STRETCH_ASPECT_EXPAND) {
 
 			//will stretch horizontally
 			viewport_size.x = desired_res.y * video_mode_aspect;
@@ -1196,7 +1196,7 @@ void SceneTree::_update_root_rect() {
 		}
 	} else {
 		//screen ratio is smaller horizontally
-		if (stretch_aspect == STRETCH_ASPECT_KEEP_WIDTH) {
+		if (stretch_aspect == STRETCH_ASPECT_KEEP_WIDTH || stretch_aspect == STRETCH_ASPECT_EXPAND) {
 
 			//will stretch horizontally
 			viewport_size.x = desired_res.x;
@@ -1217,12 +1217,11 @@ void SceneTree::_update_root_rect() {
 	Size2 margin;
 	Size2 offset;
 	//black bars and margin
-	if (screen_size.x < video_mode.x) {
+	if (stretch_aspect != STRETCH_ASPECT_EXPAND && screen_size.x < video_mode.x) {
 		margin.x = Math::round((video_mode.x - screen_size.x) / 2.0);
 		VisualServer::get_singleton()->black_bars_set_margins(margin.x, 0, margin.x, 0);
 		offset.x = Math::round(margin.x * viewport_size.y / screen_size.y);
-	} else if (screen_size.y < video_mode.y) {
-
+	} else if (stretch_aspect != STRETCH_ASPECT_EXPAND && screen_size.y < video_mode.y) {
 		margin.y = Math::round((video_mode.y - screen_size.y) / 2.0);
 		VisualServer::get_singleton()->black_bars_set_margins(0, margin.y, 0, margin.y);
 		offset.y = Math::round(margin.y * viewport_size.x / screen_size.x);
diff --git a/scene/main/scene_tree.h b/scene/main/scene_tree.h
index 90d42ef01b3..3543ebee903 100644
--- a/scene/main/scene_tree.h
+++ b/scene/main/scene_tree.h
@@ -90,6 +90,7 @@ public:
 		STRETCH_ASPECT_KEEP,
 		STRETCH_ASPECT_KEEP_WIDTH,
 		STRETCH_ASPECT_KEEP_HEIGHT,
+		STRETCH_ASPECT_EXPAND,
 	};
 
 private: