From 814989e10625d94490a7cf9091e7dc9f7b15e2cc Mon Sep 17 00:00:00 2001
From: Hugo Locurcio <hugo.locurcio@hugo.pro>
Date: Fri, 11 May 2018 19:44:05 +0200
Subject: [PATCH] Add support for bilinear bars in TextureProgress

These bars will extend from the center to the left and right of
the node, or from the center to the top and bottom of the node
depending on the option selected.

The Clockwise and Counter Clockwise mode will expand the progress
bar both ways in a circular fashion.
---
 scene/gui/texture_progress.cpp | 29 ++++++++++++++++++++++++-----
 scene/gui/texture_progress.h   |  5 ++++-
 2 files changed, 28 insertions(+), 6 deletions(-)

diff --git a/scene/gui/texture_progress.cpp b/scene/gui/texture_progress.cpp
index 82d983184bc..6e4fe88dbf2 100644
--- a/scene/gui/texture_progress.cpp
+++ b/scene/gui/texture_progress.cpp
@@ -309,15 +309,23 @@ void TextureProgress::_notification(int p_what) {
 							draw_texture_rect_region(progress, region, region, tint_progress);
 						} break;
 						case FILL_CLOCKWISE:
-						case FILL_COUNTER_CLOCKWISE: {
+						case FILL_COUNTER_CLOCKWISE:
+						case FILL_CLOCKWISE_AND_COUNTER_CLOCKWISE: {
 							float val = get_as_ratio() * rad_max_degrees / 360;
 							if (val == 1) {
 								Rect2 region = Rect2(Point2(), s);
 								draw_texture_rect_region(progress, region, region, tint_progress);
 							} else if (val != 0) {
 								Array pts;
-								float direction = mode == FILL_CLOCKWISE ? 1 : -1;
-								float start = rad_init_angle / 360;
+								float direction = mode == FILL_COUNTER_CLOCKWISE ? -1 : 1;
+								float start;
+
+								if (mode == FILL_CLOCKWISE_AND_COUNTER_CLOCKWISE) {
+									start = rad_init_angle / 360 - val / 2;
+								} else {
+									start = rad_init_angle / 360;
+								}
+
 								float end = start + direction * val;
 								pts.append(start);
 								pts.append(end);
@@ -351,6 +359,14 @@ void TextureProgress::_notification(int p_what) {
 								draw_line(p - Point2(0, 8), p + Point2(0, 8), Color(0.9, 0.5, 0.5), 2);
 							}
 						} break;
+						case FILL_BILINEAR_LEFT_AND_RIGHT: {
+							Rect2 region = Rect2(Point2(s.x / 2 - s.x * get_as_ratio() / 2, 0), Size2(s.x * get_as_ratio(), s.y));
+							draw_texture_rect_region(progress, region, region, tint_progress);
+						} break;
+						case FILL_BILINEAR_TOP_AND_BOTTOM: {
+							Rect2 region = Rect2(Point2(0, s.y / 2 - s.y * get_as_ratio() / 2), Size2(s.x, s.y * get_as_ratio()));
+							draw_texture_rect_region(progress, region, region, tint_progress);
+						} break;
 						default:
 							draw_texture_rect_region(progress, Rect2(Point2(), Size2(s.x * get_as_ratio(), s.y)), Rect2(Point2(), Size2(s.x * get_as_ratio(), s.y)), tint_progress);
 					}
@@ -364,7 +380,7 @@ void TextureProgress::_notification(int p_what) {
 }
 
 void TextureProgress::set_fill_mode(int p_fill) {
-	ERR_FAIL_INDEX(p_fill, 6);
+	ERR_FAIL_INDEX(p_fill, 9);
 	mode = (FillMode)p_fill;
 	update();
 }
@@ -446,7 +462,7 @@ void TextureProgress::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "texture_under", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_under_texture", "get_under_texture");
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "texture_over", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_over_texture", "get_over_texture");
 	ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "texture_progress", PROPERTY_HINT_RESOURCE_TYPE, "Texture"), "set_progress_texture", "get_progress_texture");
-	ADD_PROPERTYNZ(PropertyInfo(Variant::INT, "fill_mode", PROPERTY_HINT_ENUM, "Left to Right,Right to Left,Top to Bottom,Bottom to Top,Clockwise,Counter Clockwise"), "set_fill_mode", "get_fill_mode");
+	ADD_PROPERTYNZ(PropertyInfo(Variant::INT, "fill_mode", PROPERTY_HINT_ENUM, "Left to Right,Right to Left,Top to Bottom,Bottom to Top,Clockwise,Counter Clockwise,Bilinear (Left and Right),Bilinear (Top and Bottom), Clockwise and Counter Clockwise"), "set_fill_mode", "get_fill_mode");
 	ADD_GROUP("Tint", "tint_");
 	ADD_PROPERTY(PropertyInfo(Variant::COLOR, "tint_under", PROPERTY_HINT_COLOR_NO_ALPHA), "set_tint_under", "get_tint_under");
 	ADD_PROPERTY(PropertyInfo(Variant::COLOR, "tint_over", PROPERTY_HINT_COLOR_NO_ALPHA), "set_tint_over", "get_tint_over");
@@ -468,6 +484,9 @@ void TextureProgress::_bind_methods() {
 	BIND_ENUM_CONSTANT(FILL_BOTTOM_TO_TOP);
 	BIND_ENUM_CONSTANT(FILL_CLOCKWISE);
 	BIND_ENUM_CONSTANT(FILL_COUNTER_CLOCKWISE);
+	BIND_ENUM_CONSTANT(FILL_BILINEAR_LEFT_AND_RIGHT);
+	BIND_ENUM_CONSTANT(FILL_BILINEAR_TOP_AND_BOTTOM);
+	BIND_ENUM_CONSTANT(FILL_CLOCKWISE_AND_COUNTER_CLOCKWISE);
 }
 
 TextureProgress::TextureProgress() {
diff --git a/scene/gui/texture_progress.h b/scene/gui/texture_progress.h
index 34158b5db5b..a11e55234ab 100644
--- a/scene/gui/texture_progress.h
+++ b/scene/gui/texture_progress.h
@@ -52,7 +52,10 @@ public:
 		FILL_TOP_TO_BOTTOM,
 		FILL_BOTTOM_TO_TOP,
 		FILL_CLOCKWISE,
-		FILL_COUNTER_CLOCKWISE
+		FILL_COUNTER_CLOCKWISE,
+		FILL_BILINEAR_LEFT_AND_RIGHT,
+		FILL_BILINEAR_TOP_AND_BOTTOM,
+		FILL_CLOCKWISE_AND_COUNTER_CLOCKWISE
 	};
 
 	void set_fill_mode(int p_fill);