/*************************************************************************/
/*  gradient_editor_plugin.cpp                                           */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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/*************************************************************************/

#include "gradient_editor_plugin.h"

#include "editor/editor_scale.h"
#include "core/object/class_db.h"
#include "core/os/memory.h"
#include "core/object/undo_redo.h"
#include "core/containers/vector.h"
#include "editor/editor_node.h"
#include "core/scene/resources/gradient.h"

Size2 GradientEditor::get_minimum_size() const {
	return Size2(0, 60) * EDSCALE;
}
void GradientEditor::_gradient_changed() {
	if (editing) {
		return;
	}

	editing = true;
	Vector<Gradient::Point> points = gradient->get_points();
	set_points(points);
	set_interpolation_mode(gradient->get_interpolation_mode());
	update();
	editing = false;
}

void GradientEditor::_ramp_changed() {
	editing = true;
	UndoRedo *undo_redo = EditorNode::get_singleton()->get_undo_redo();
	undo_redo->create_action(TTR("Gradient Edited"), UndoRedo::MERGE_ENDS);
	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;
}

void GradientEditor::_bind_methods() {
	ClassDB::bind_method("_gradient_changed", &GradientEditor::_gradient_changed);
	ClassDB::bind_method("_ramp_changed", &GradientEditor::_ramp_changed);
}

void GradientEditor::set_gradient(const Ref<Gradient> &p_gradient) {
	gradient = p_gradient;
	connect("ramp_changed", this, "_ramp_changed");
	gradient->connect("changed", this, "_gradient_changed");
	set_points(gradient->get_points());
	set_interpolation_mode(gradient->get_interpolation_mode());
}

GradientEditor::GradientEditor() {
	editing = false;
}

GradientEditor::~GradientEditor() {

}

///////////////////////

bool EditorInspectorPluginGradient::can_handle(Object *p_object) {
	return Object::cast_to<Gradient>(p_object) != nullptr;
}

void EditorInspectorPluginGradient::parse_begin(Object *p_object) {
	Gradient *gradient = Object::cast_to<Gradient>(p_object);
	Ref<Gradient> g(gradient);

	GradientEditor *editor = memnew(GradientEditor);
	editor->set_gradient(g);
	add_custom_control(editor);
}

GradientEditorPlugin::GradientEditorPlugin(EditorNode *p_node) {
	Ref<EditorInspectorPluginGradient> plugin;
	plugin.instance();
	add_inspector_plugin(plugin);
}