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- /*************************************************************************/
- /* range.cpp */
- /*************************************************************************/
- /* This file is part of: */
- /* GODOT ENGINE */
- /* https://godotengine.org */
- /*************************************************************************/
- /* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
- /* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
- /* */
- /* 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 "range.h"
- void Range::_value_changed_notify() {
- _value_changed(shared->val);
- emit_signal("value_changed", shared->val);
- update();
- _change_notify("value");
- }
- void Range::Shared::emit_value_changed() {
- for (Set<Range *>::Element *E = owners.front(); E; E = E->next()) {
- Range *r = E->get();
- if (!r->is_inside_tree())
- continue;
- r->_value_changed_notify();
- }
- }
- void Range::_changed_notify(const char *p_what) {
- emit_signal("changed", shared->val);
- update();
- _change_notify(p_what);
- }
- void Range::Shared::emit_changed(const char *p_what) {
- for (Set<Range *>::Element *E = owners.front(); E; E = E->next()) {
- Range *r = E->get();
- if (!r->is_inside_tree())
- continue;
- r->_changed_notify(p_what);
- }
- }
- void Range::set_value(double p_val) {
- if (_rounded_values) {
- p_val = Math::round(p_val);
- }
- if (p_val > shared->max - shared->page)
- p_val = shared->max - shared->page;
- if (p_val < shared->min)
- p_val = shared->min;
- if (shared->val == p_val)
- return;
- shared->val = p_val;
- shared->emit_value_changed();
- }
- void Range::set_min(double p_min) {
- shared->min = p_min;
- set_value(shared->val);
- shared->emit_changed("min");
- }
- void Range::set_max(double p_max) {
- shared->max = p_max;
- set_value(shared->val);
- shared->emit_changed("max");
- }
- void Range::set_step(double p_step) {
- shared->step = p_step;
- shared->emit_changed("step");
- }
- void Range::set_page(double p_page) {
- shared->page = p_page;
- set_value(shared->val);
- shared->emit_changed("page");
- }
- double Range::get_value() const {
- return shared->val;
- }
- double Range::get_min() const {
- return shared->min;
- }
- double Range::get_max() const {
- return shared->max;
- }
- double Range::get_step() const {
- return shared->step;
- }
- double Range::get_page() const {
- return shared->page;
- }
- void Range::set_as_ratio(double p_value) {
- double v;
- if (shared->exp_ratio && get_min() > 0) {
- double exp_min = Math::log(get_min()) / Math::log((double)2);
- double exp_max = Math::log(get_max()) / Math::log((double)2);
- v = Math::pow(2, exp_min + (exp_max - exp_min) * p_value);
- } else {
- double percent = (get_max() - get_min()) * p_value;
- if (get_step() > 0) {
- double steps = round(percent / get_step());
- v = steps * get_step() + get_min();
- } else {
- v = percent + get_min();
- }
- }
- set_value(v);
- }
- double Range::get_as_ratio() const {
- if (shared->exp_ratio && get_min() > 0) {
- double exp_min = Math::log(get_min()) / Math::log((double)2);
- double exp_max = Math::log(get_max()) / Math::log((double)2);
- double v = Math::log(get_value()) / Math::log((double)2);
- return (v - exp_min) / (exp_max - exp_min);
- } else {
- return (get_value() - get_min()) / (get_max() - get_min());
- }
- }
- void Range::_share(Node *p_range) {
- Range *r = Object::cast_to<Range>(p_range);
- ERR_FAIL_COND(!r);
- share(r);
- }
- void Range::share(Range *p_range) {
- ERR_FAIL_NULL(p_range);
- p_range->_ref_shared(shared);
- p_range->_changed_notify();
- p_range->_value_changed_notify();
- }
- void Range::unshare() {
- Shared *nshared = memnew(Shared);
- nshared->min = shared->min;
- nshared->max = shared->max;
- nshared->val = shared->val;
- nshared->step = shared->step;
- nshared->page = shared->page;
- _unref_shared();
- _ref_shared(nshared);
- }
- void Range::_ref_shared(Shared *p_shared) {
- if (shared && p_shared == shared)
- return;
- _unref_shared();
- shared = p_shared;
- shared->owners.insert(this);
- }
- void Range::_unref_shared() {
- if (shared) {
- shared->owners.erase(this);
- if (shared->owners.size() == 0) {
- memdelete(shared);
- shared = NULL;
- }
- }
- }
- void Range::_bind_methods() {
- ClassDB::bind_method(D_METHOD("get_value"), &Range::get_value);
- ClassDB::bind_method(D_METHOD("get_min"), &Range::get_min);
- ClassDB::bind_method(D_METHOD("get_max"), &Range::get_max);
- ClassDB::bind_method(D_METHOD("get_step"), &Range::get_step);
- ClassDB::bind_method(D_METHOD("get_page"), &Range::get_page);
- ClassDB::bind_method(D_METHOD("get_as_ratio"), &Range::get_as_ratio);
- ClassDB::bind_method(D_METHOD("set_value", "value"), &Range::set_value);
- ClassDB::bind_method(D_METHOD("set_min", "minimum"), &Range::set_min);
- ClassDB::bind_method(D_METHOD("set_max", "maximum"), &Range::set_max);
- ClassDB::bind_method(D_METHOD("set_step", "step"), &Range::set_step);
- ClassDB::bind_method(D_METHOD("set_page", "pagesize"), &Range::set_page);
- ClassDB::bind_method(D_METHOD("set_as_ratio", "value"), &Range::set_as_ratio);
- ClassDB::bind_method(D_METHOD("set_use_rounded_values", "enabled"), &Range::set_use_rounded_values);
- ClassDB::bind_method(D_METHOD("is_using_rounded_values"), &Range::is_using_rounded_values);
- ClassDB::bind_method(D_METHOD("set_exp_ratio", "enabled"), &Range::set_exp_ratio);
- ClassDB::bind_method(D_METHOD("is_ratio_exp"), &Range::is_ratio_exp);
- ClassDB::bind_method(D_METHOD("share", "with"), &Range::_share);
- ClassDB::bind_method(D_METHOD("unshare"), &Range::unshare);
- ADD_SIGNAL(MethodInfo("value_changed", PropertyInfo(Variant::REAL, "value")));
- ADD_SIGNAL(MethodInfo("changed"));
- ADD_PROPERTY(PropertyInfo(Variant::REAL, "min_value"), "set_min", "get_min");
- ADD_PROPERTY(PropertyInfo(Variant::REAL, "max_value"), "set_max", "get_max");
- ADD_PROPERTY(PropertyInfo(Variant::REAL, "step"), "set_step", "get_step");
- ADD_PROPERTY(PropertyInfo(Variant::REAL, "page"), "set_page", "get_page");
- ADD_PROPERTY(PropertyInfo(Variant::REAL, "value"), "set_value", "get_value");
- ADD_PROPERTY(PropertyInfo(Variant::BOOL, "exp_edit"), "set_exp_ratio", "is_ratio_exp");
- ADD_PROPERTY(PropertyInfo(Variant::BOOL, "rounded"), "set_use_rounded_values", "is_using_rounded_values");
- }
- void Range::set_use_rounded_values(bool p_enable) {
- _rounded_values = p_enable;
- }
- bool Range::is_using_rounded_values() const {
- return _rounded_values;
- }
- void Range::set_exp_ratio(bool p_enable) {
- shared->exp_ratio = p_enable;
- }
- bool Range::is_ratio_exp() const {
- return shared->exp_ratio;
- }
- Range::Range() {
- shared = memnew(Shared);
- shared->min = 0;
- shared->max = 100;
- shared->val = 0;
- shared->step = 1;
- shared->page = 0;
- shared->owners.insert(this);
- shared->exp_ratio = false;
- _rounded_values = false;
- }
- Range::~Range() {
- _unref_shared();
- }
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