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/**************************************************************************/
/* particle_process_material_editor_plugin.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/**************************************************************************/
#include "particle_process_material_editor_plugin.h"
#include "editor/editor_property_name_processor.h"
#include "editor/editor_settings.h"
#include "editor/editor_string_names.h"
#include "editor/gui/editor_spin_slider.h"
#include "editor/themes/editor_theme_manager.h"
#include "scene/gui/box_container.h"
#include "scene/gui/button.h"
#include "scene/gui/label.h"
#include "scene/resources/particle_process_material.h"
void ParticleProcessMaterialMinMaxPropertyEditor::_update_sizing() {
edit_size = range_edit_widget->get_size();
margin = Vector2(range_slider_left_icon->get_width(), (edit_size.y - range_slider_left_icon->get_height()) * 0.5);
usable_area = edit_size - margin * 2;
}
void ParticleProcessMaterialMinMaxPropertyEditor::_range_edit_draw() {
ERR_FAIL_COND(range_slider_left_icon.is_null());
ERR_FAIL_COND(range_slider_right_icon.is_null());
_update_sizing();
bool widget_active = mouse_inside || drag != Drag::NONE;
// FIXME: Need to offset by 1 due to some outline bug.
range_edit_widget->draw_rect(Rect2(margin + Vector2(1, 1), usable_area - Vector2(1, 1)), widget_active ? background_color.lerp(normal_color, 0.3) : background_color, false, 1.0);
Color draw_color;
if (widget_active) {
float icon_offset = _get_left_offset() - range_slider_left_icon->get_width() - 1;
if (drag == Drag::LEFT || drag == Drag::SCALE) {
draw_color = drag_color;
} else if (hover == Hover::LEFT) {
draw_color = hovered_color;
} else {
draw_color = normal_color;
}
range_edit_widget->draw_texture(range_slider_left_icon, Vector2(icon_offset, margin.y), draw_color);
icon_offset = _get_right_offset();
if (drag == Drag::RIGHT || drag == Drag::SCALE) {
draw_color = drag_color;
} else if (hover == Hover::RIGHT) {
draw_color = hovered_color;
} else {
draw_color = normal_color;
}
range_edit_widget->draw_texture(range_slider_right_icon, Vector2(icon_offset, margin.y), draw_color);
}
if (drag == Drag::MIDDLE || drag == Drag::SCALE) {
draw_color = drag_color;
} else if (hover == Hover::MIDDLE) {
draw_color = hovered_color;
} else {
draw_color = normal_color;
}
range_edit_widget->draw_rect(_get_middle_rect(), draw_color);
Rect2 midpoint_rect(Vector2(margin.x + usable_area.x * (_get_min_ratio() + _get_max_ratio()) * 0.5 - 1, margin.y + 2),
Vector2(2, usable_area.y - 4));
range_edit_widget->draw_rect(midpoint_rect, midpoint_color);
}
void ParticleProcessMaterialMinMaxPropertyEditor::_range_edit_gui_input(const Ref<InputEvent> &p_event) {
Ref<InputEventMouseButton> mb = p_event;
Ref<InputEventMouseMotion> mm = p_event;
// Prevent unnecessary computations.
if ((mb.is_null() || mb->get_button_index() != MouseButton::LEFT) && (mm.is_null())) {
return;
}
ERR_FAIL_COND(range_slider_left_icon.is_null());
ERR_FAIL_COND(range_slider_right_icon.is_null());
_update_sizing();
if (mb.is_valid()) {
const Drag prev_drag = drag;
if (mb->is_pressed()) {
if (mb->is_shift_pressed()) {
drag = Drag::SCALE;
drag_from_value = (max_range->get_value() - min_range->get_value()) * 0.5;
drag_midpoint = (max_range->get_value() + min_range->get_value()) * 0.5;
} else if (hover == Hover::LEFT) {
drag = Drag::LEFT;
drag_from_value = min_range->get_value();
} else if (hover == Hover::RIGHT) {
drag = Drag::RIGHT;
drag_from_value = max_range->get_value();
} else {
drag = Drag::MIDDLE;
drag_from_value = min_range->get_value();
}
drag_origin = mb->get_position().x;
} else {
drag = Drag::NONE;
}
if (drag != prev_drag) {
range_edit_widget->queue_redraw();
}
}
float property_length = property_range.y - property_range.x;
if (mm.is_valid()) {
switch (drag) {
case Drag::NONE: {
const Hover prev_hover = hover;
float left_icon_offset = _get_left_offset() - range_slider_left_icon->get_width() - 1;
if (Rect2(Vector2(left_icon_offset, 0), range_slider_left_icon->get_size()).has_point(mm->get_position())) {
hover = Hover::LEFT;
} else if (Rect2(Vector2(_get_right_offset(), 0), range_slider_right_icon->get_size()).has_point(mm->get_position())) {
hover = Hover::RIGHT;
} else if (_get_middle_rect().has_point(mm->get_position())) {
hover = Hover::MIDDLE;
} else {
hover = Hover::NONE;
}
if (hover != prev_hover) {
range_edit_widget->queue_redraw();
}
} break;
case Drag::LEFT:
case Drag::RIGHT: {
float new_value = drag_from_value + (mm->get_position().x - drag_origin) / usable_area.x * property_length;
if (drag == Drag::LEFT) {
new_value = MIN(new_value, max_range->get_value());
_set_clamped_values(new_value, max_range->get_value());
} else {
new_value = MAX(new_value, min_range->get_value());
_set_clamped_values(min_range->get_value(), new_value);
}
} break;
case Drag::MIDDLE: {
float delta = (mm->get_position().x - drag_origin) / usable_area.x * property_length;
float diff = max_range->get_value() - min_range->get_value();
delta = CLAMP(drag_from_value + delta, property_range.x, property_range.y - diff) - drag_from_value;
_set_clamped_values(drag_from_value + delta, drag_from_value + delta + diff);
} break;
case Drag::SCALE: {
float delta = (mm->get_position().x - drag_origin) / usable_area.x * property_length + drag_from_value;
_set_clamped_values(MIN(drag_midpoint, drag_midpoint - delta), MAX(drag_midpoint, drag_midpoint + delta));
} break;
}
}
}
void ParticleProcessMaterialMinMaxPropertyEditor::_set_mouse_inside(bool p_inside) {
mouse_inside = p_inside;
if (!p_inside) {
hover = Hover::NONE;
}
range_edit_widget->queue_redraw();
}
float ParticleProcessMaterialMinMaxPropertyEditor::_get_min_ratio() const {
return (min_range->get_value() - property_range.x) / (property_range.y - property_range.x);
}
float ParticleProcessMaterialMinMaxPropertyEditor::_get_max_ratio() const {
return (max_range->get_value() - property_range.x) / (property_range.y - property_range.x);
}
float ParticleProcessMaterialMinMaxPropertyEditor::_get_left_offset() const {
return margin.x + usable_area.x * _get_min_ratio();
}
float ParticleProcessMaterialMinMaxPropertyEditor::_get_right_offset() const {
return margin.x + usable_area.x * _get_max_ratio();
}
Rect2 ParticleProcessMaterialMinMaxPropertyEditor::_get_middle_rect() const {
if (Math::is_equal_approx(min_range->get_value(), max_range->get_value())) {
return Rect2();
}
return Rect2(
Vector2(_get_left_offset() - 1, margin.y),
Vector2(usable_area.x * (_get_max_ratio() - _get_min_ratio()) + 1, usable_area.y));
}
void ParticleProcessMaterialMinMaxPropertyEditor::_set_clamped_values(float p_min, float p_max) {
// This is required for editing widget in case the properties have or_less or or_greater hint.
min_range->set_value(MAX(p_min, property_range.x));
max_range->set_value(MIN(p_max, property_range.y));
_update_slider_values();
_sync_property();
}
void ParticleProcessMaterialMinMaxPropertyEditor::_sync_property() {
const Vector2 value = Vector2(min_range->get_value(), max_range->get_value());
emit_changed(get_edited_property(), value, "", true);
range_edit_widget->queue_redraw();
}
void ParticleProcessMaterialMinMaxPropertyEditor::_update_mode() {
max_edit->set_read_only(false);
switch (slider_mode) {
case Mode::RANGE: {
min_edit->set_label("min");
max_edit->set_label("max");
max_edit->set_block_signals(true);
max_edit->set_min(max_range->get_min());
max_edit->set_max(max_range->get_max());
max_edit->set_block_signals(false);
min_edit->set_allow_lesser(min_range->is_lesser_allowed());
min_edit->set_allow_greater(min_range->is_greater_allowed());
max_edit->set_allow_lesser(max_range->is_lesser_allowed());
max_edit->set_allow_greater(max_range->is_greater_allowed());
} break;
case Mode::MIDPOINT: {
min_edit->set_label("val");
max_edit->set_label(U"±");
max_edit->set_block_signals(true);
max_edit->set_min(0);
max_edit->set_block_signals(false);
min_edit->set_allow_lesser(min_range->is_lesser_allowed());
min_edit->set_allow_greater(max_range->is_greater_allowed());
max_edit->set_allow_lesser(false);
max_edit->set_allow_greater(min_range->is_lesser_allowed() && max_range->is_greater_allowed());
} break;
}
_update_slider_values();
}
void ParticleProcessMaterialMinMaxPropertyEditor::_toggle_mode(bool p_edit_mode) {
slider_mode = p_edit_mode ? Mode::MIDPOINT : Mode::RANGE;
EditorSettings::get_singleton()->set_project_metadata("editor_metadata", "particle_spin_mode", int(slider_mode));
_update_mode();
}
void ParticleProcessMaterialMinMaxPropertyEditor::_update_slider_values() {
switch (slider_mode) {
case Mode::RANGE: {
min_edit->set_value_no_signal(min_range->get_value());
max_edit->set_value_no_signal(max_range->get_value());
} break;
case Mode::MIDPOINT: {
min_edit->set_value_no_signal((min_range->get_value() + max_range->get_value()) * 0.5);
max_edit->set_value_no_signal((max_range->get_value() - min_range->get_value()) * 0.5);
max_edit->set_block_signals(true);
max_edit->set_max(_get_max_spread());
max_edit->set_read_only(max_edit->get_max() == 0);
max_edit->set_block_signals(false);
} break;
}
}
void ParticleProcessMaterialMinMaxPropertyEditor::_sync_sliders(float, const EditorSpinSlider *p_changed_slider) {
switch (slider_mode) {
case Mode::RANGE: {
if (p_changed_slider == max_edit) {
min_edit->set_value_no_signal(MIN(min_edit->get_value(), max_edit->get_value()));
}
min_range->set_value(min_edit->get_value());
if (p_changed_slider == min_edit) {
max_edit->set_value_no_signal(MAX(min_edit->get_value(), max_edit->get_value()));
}
max_range->set_value(max_edit->get_value());
_sync_property();
} break;
case Mode::MIDPOINT: {
if (p_changed_slider == min_edit) {
max_edit->set_block_signals(true); // If max changes, value may change.
max_edit->set_max(_get_max_spread());
max_edit->set_read_only(max_edit->get_max() == 0);
max_edit->set_block_signals(false);
}
min_range->set_value(min_edit->get_value() - max_edit->get_value());
max_range->set_value(min_edit->get_value() + max_edit->get_value());
_sync_property();
} break;
}
property_range.x = MIN(min_range->get_value(), min_range->get_min());
property_range.y = MAX(max_range->get_value(), max_range->get_max());
}
float ParticleProcessMaterialMinMaxPropertyEditor::_get_max_spread() const {
float max_spread = max_range->get_max() - min_range->get_min();
if (max_edit->is_greater_allowed()) {
return max_spread;
}
if (!min_edit->is_lesser_allowed()) {
max_spread = MIN(max_spread, min_edit->get_value() - min_edit->get_min());
}
if (!min_edit->is_greater_allowed()) {
max_spread = MIN(max_spread, min_edit->get_max() - min_edit->get_value());
}
return max_spread;
}
void ParticleProcessMaterialMinMaxPropertyEditor::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_THEME_CHANGED: {
toggle_mode_button->set_icon(get_editor_theme_icon(SNAME("Anchor")));
range_slider_left_icon = get_editor_theme_icon(SNAME("RangeSliderLeft"));
range_slider_right_icon = get_editor_theme_icon(SNAME("RangeSliderRight"));
min_edit->add_theme_color_override(SNAME("label_color"), get_theme_color(SNAME("property_color_x"), EditorStringName(Editor)));
max_edit->add_theme_color_override(SNAME("label_color"), get_theme_color(SNAME("property_color_y"), EditorStringName(Editor)));
const bool dark_theme = EditorThemeManager::is_dark_theme();
const Color accent_color = get_theme_color(SNAME("accent_color"), EditorStringName(Editor));
background_color = dark_theme ? Color(0.3, 0.3, 0.3) : Color(0.7, 0.7, 0.7);
normal_color = dark_theme ? Color(0.5, 0.5, 0.5) : Color(0.8, 0.8, 0.8);
hovered_color = dark_theme ? Color(0.8, 0.8, 0.8) : Color(0.6, 0.6, 0.6);
drag_color = hovered_color.lerp(accent_color, 0.8);
midpoint_color = dark_theme ? Color(1, 1, 1) : Color(0, 0, 0);
range_edit_widget->set_custom_minimum_size(Vector2(0, range_slider_left_icon->get_height() + 8));
} break;
}
}
void ParticleProcessMaterialMinMaxPropertyEditor::setup(float p_min, float p_max, float p_step, bool p_allow_less, bool p_allow_greater, bool p_degrees) {
property_range = Vector2(p_min, p_max);
// Initially all Ranges share properties.
for (Range *range : Vector<Range *>{ min_range, min_edit, max_range, max_edit }) {
range->set_min(p_min);
range->set_max(p_max);
range->set_step(p_step);
range->set_allow_lesser(p_allow_less);
range->set_allow_greater(p_allow_greater);
}
if (p_degrees) {
min_edit->set_suffix(U" \u00B0");
max_edit->set_suffix(U" \u00B0");
}
_update_mode();
}
void ParticleProcessMaterialMinMaxPropertyEditor::update_property() {
const Vector2i value = get_edited_property_value();
min_range->set_value(value.x);
max_range->set_value(value.y);
_update_slider_values();
range_edit_widget->queue_redraw();
}
ParticleProcessMaterialMinMaxPropertyEditor::ParticleProcessMaterialMinMaxPropertyEditor() {
VBoxContainer *content_vb = memnew(VBoxContainer);
content_vb->add_theme_constant_override(SNAME("separation"), 0);
add_child(content_vb);
// Helper Range objects to keep absolute min and max values.
min_range = memnew(Range);
min_range->hide();
add_child(min_range);
max_range = memnew(Range);
max_range->hide();
add_child(max_range);
// Range edit widget.
HBoxContainer *hb = memnew(HBoxContainer);
content_vb->add_child(hb);
range_edit_widget = memnew(Control);
range_edit_widget->set_h_size_flags(SIZE_EXPAND_FILL);
range_edit_widget->set_tooltip_text(TTR("Hold Shift to scale around midpoint instead of moving."));
hb->add_child(range_edit_widget);
range_edit_widget->connect(SNAME("draw"), callable_mp(this, &ParticleProcessMaterialMinMaxPropertyEditor::_range_edit_draw));
range_edit_widget->connect(SNAME("gui_input"), callable_mp(this, &ParticleProcessMaterialMinMaxPropertyEditor::_range_edit_gui_input));
range_edit_widget->connect(SNAME("mouse_entered"), callable_mp(this, &ParticleProcessMaterialMinMaxPropertyEditor::_set_mouse_inside).bind(true));
range_edit_widget->connect(SNAME("mouse_exited"), callable_mp(this, &ParticleProcessMaterialMinMaxPropertyEditor::_set_mouse_inside).bind(false));
// Range controls for actual editing. Their min/max may depend on editing mode.
hb = memnew(HBoxContainer);
content_vb->add_child(hb);
min_edit = memnew(EditorSpinSlider);
min_edit->set_h_size_flags(SIZE_EXPAND_FILL);
hb->add_child(min_edit);
min_edit->connect(SNAME("value_changed"), callable_mp(this, &ParticleProcessMaterialMinMaxPropertyEditor::_sync_sliders).bind(min_edit));
max_edit = memnew(EditorSpinSlider);
max_edit->set_h_size_flags(SIZE_EXPAND_FILL);
hb->add_child(max_edit);
max_edit->connect(SNAME("value_changed"), callable_mp(this, &ParticleProcessMaterialMinMaxPropertyEditor::_sync_sliders).bind(max_edit));
toggle_mode_button = memnew(Button);
toggle_mode_button->set_toggle_mode(true);
toggle_mode_button->set_tooltip_text(TTR("Toggle between minimum/maximum and base value/spread modes."));
hb->add_child(toggle_mode_button);
toggle_mode_button->connect(SNAME("toggled"), callable_mp(this, &ParticleProcessMaterialMinMaxPropertyEditor::_toggle_mode));
set_bottom_editor(content_vb);
}
bool EditorInspectorParticleProcessMaterialPlugin::can_handle(Object *p_object) {
return Object::cast_to<ParticleProcessMaterial>(p_object);
}
bool EditorInspectorParticleProcessMaterialPlugin::parse_property(Object *p_object, const Variant::Type p_type, const String &p_path, const PropertyHint p_hint, const String &p_hint_text, const BitField<PropertyUsageFlags> p_usage, const bool p_wide) {
if (!ParticleProcessMaterial::has_min_max_property(p_path)) {
return false;
}
ERR_FAIL_COND_V(p_hint != PROPERTY_HINT_RANGE, false);
Ref<ParticleProcessMaterial> mat = Ref<ParticleProcessMaterial>(p_object);
ERR_FAIL_COND_V(mat.is_null(), false);
PackedStringArray range_hint = p_hint_text.split(",");
float min = range_hint[0].to_float();
float max = range_hint[1].to_float();
float step = range_hint[2].to_float();
bool allow_less = range_hint.find("or_less", 3) > -1;
bool allow_greater = range_hint.find("or_greater", 3) > -1;
bool degrees = range_hint.find("degrees", 3) > -1;
ParticleProcessMaterialMinMaxPropertyEditor *ed = memnew(ParticleProcessMaterialMinMaxPropertyEditor);
ed->setup(min, max, step, allow_less, allow_greater, degrees);
add_property_editor(p_path, ed);
return true;
}
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