From ed0337c0b9f923d0fc3594916824549a43960043 Mon Sep 17 00:00:00 2001
From: Hendrik Brucker <hendrik.brucker@mail.de>
Date: Mon, 8 Nov 2021 19:11:36 +0100
Subject: Several Gradient improvements

---
 editor/plugins/gradient_editor_plugin.cpp | 45 ++++++++++++++++++++++++++++++-
 editor/plugins/gradient_editor_plugin.h   | 16 +++++++++++
 2 files changed, 60 insertions(+), 1 deletion(-)

(limited to 'editor/plugins')

diff --git a/editor/plugins/gradient_editor_plugin.cpp b/editor/plugins/gradient_editor_plugin.cpp
index 355bdb69d8..da050abc02 100644
--- a/editor/plugins/gradient_editor_plugin.cpp
+++ b/editor/plugins/gradient_editor_plugin.cpp
@@ -46,6 +46,8 @@ void GradientEditor::_gradient_changed() {
 	editing = true;
 	Vector<Gradient::Point> points = gradient->get_points();
 	set_points(points);
+	set_interpolation_mode(gradient->get_interpolation_mode());
+	update();
 	editing = false;
 }
 
@@ -55,8 +57,10 @@ void GradientEditor::_ramp_changed() {
 	undo_redo->create_action(TTR("Gradient Edited"));
 	undo_redo->add_do_method(gradient.ptr(), "set_offsets", get_offsets());
 	undo_redo->add_do_method(gradient.ptr(), "set_colors", get_colors());
+	undo_redo->add_do_method(gradient.ptr(), "set_interpolation_mode", get_interpolation_mode());
 	undo_redo->add_undo_method(gradient.ptr(), "set_offsets", gradient->get_offsets());
 	undo_redo->add_undo_method(gradient.ptr(), "set_colors", gradient->get_colors());
+	undo_redo->add_undo_method(gradient.ptr(), "set_interpolation_mode", gradient->get_interpolation_mode());
 	undo_redo->commit_action();
 	editing = false;
 }
@@ -69,6 +73,14 @@ void GradientEditor::set_gradient(const Ref<Gradient> &p_gradient) {
 	connect("ramp_changed", callable_mp(this, &GradientEditor::_ramp_changed));
 	gradient->connect("changed", callable_mp(this, &GradientEditor::_gradient_changed));
 	set_points(gradient->get_points());
+	set_interpolation_mode(gradient->get_interpolation_mode());
+}
+
+void GradientEditor::reverse_gradient() {
+	gradient->reverse();
+	set_points(gradient->get_points());
+	emit_signal(SNAME("ramp_changed"));
+	update();
 }
 
 GradientEditor::GradientEditor() {
@@ -77,6 +89,23 @@ GradientEditor::GradientEditor() {
 
 ///////////////////////
 
+void GradientReverseButton::_notification(int p_what) {
+	if (p_what == NOTIFICATION_DRAW) {
+		Ref<Texture2D> icon = get_theme_icon(SNAME("ReverseGradient"), SNAME("EditorIcons"));
+		if (is_pressed()) {
+			draw_texture_rect(icon, Rect2(margin, margin, icon->get_width(), icon->get_height()), false, get_theme_color(SNAME("icon_pressed_color"), SNAME("Button")));
+		} else {
+			draw_texture_rect(icon, Rect2(margin, margin, icon->get_width(), icon->get_height()));
+		}
+	}
+}
+
+Size2 GradientReverseButton::get_minimum_size() const {
+	return (get_theme_icon(SNAME("ReverseGradient"), SNAME("EditorIcons"))->get_size() + Size2(margin * 2, margin * 2));
+}
+
+///////////////////////
+
 bool EditorInspectorPluginGradient::can_handle(Object *p_object) {
 	return Object::cast_to<Gradient>(p_object) != nullptr;
 }
@@ -85,9 +114,23 @@ void EditorInspectorPluginGradient::parse_begin(Object *p_object) {
 	Gradient *gradient = Object::cast_to<Gradient>(p_object);
 	Ref<Gradient> g(gradient);
 
-	GradientEditor *editor = memnew(GradientEditor);
+	editor = memnew(GradientEditor);
 	editor->set_gradient(g);
 	add_custom_control(editor);
+
+	reverse_btn = memnew(GradientReverseButton);
+
+	gradient_tools_hbox = memnew(HBoxContainer);
+	gradient_tools_hbox->add_child(reverse_btn);
+
+	add_custom_control(gradient_tools_hbox);
+
+	reverse_btn->connect("pressed", callable_mp(this, &EditorInspectorPluginGradient::_reverse_button_pressed));
+	reverse_btn->set_tooltip(TTR("Reverse/mirror gradient."));
+}
+
+void EditorInspectorPluginGradient::_reverse_button_pressed() {
+	editor->reverse_gradient();
 }
 
 GradientEditorPlugin::GradientEditorPlugin(EditorNode *p_node) {
diff --git a/editor/plugins/gradient_editor_plugin.h b/editor/plugins/gradient_editor_plugin.h
index bcbb86e422..95b7b466c9 100644
--- a/editor/plugins/gradient_editor_plugin.h
+++ b/editor/plugins/gradient_editor_plugin.h
@@ -50,12 +50,28 @@ protected:
 public:
 	virtual Size2 get_minimum_size() const override;
 	void set_gradient(const Ref<Gradient> &p_gradient);
+	void reverse_gradient();
 	GradientEditor();
 };
 
+class GradientReverseButton : public BaseButton {
+	GDCLASS(GradientReverseButton, BaseButton);
+
+	int margin = 2;
+
+	void _notification(int p_what);
+	virtual Size2 get_minimum_size() const override;
+};
+
 class EditorInspectorPluginGradient : public EditorInspectorPlugin {
 	GDCLASS(EditorInspectorPluginGradient, EditorInspectorPlugin);
 
+	GradientEditor *editor;
+	HBoxContainer *gradient_tools_hbox;
+	GradientReverseButton *reverse_btn;
+
+	void _reverse_button_pressed();
+
 public:
 	virtual bool can_handle(Object *p_object) override;
 	virtual void parse_begin(Object *p_object) override;
-- 
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