/*************************************************************************/ /* slider.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2022 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 "slider.h" #include "core/os/keyboard.h" Size2 Slider::get_minimum_size() const { Ref<StyleBox> style = get_stylebox("slider"); Size2i ss = style->get_minimum_size() + style->get_center_size(); Ref<Texture> grabber = get_icon("grabber"); Size2i rs = grabber->get_size(); if (orientation == HORIZONTAL) { return Size2i(ss.width, MAX(ss.height, rs.height)); } else { return Size2i(MAX(ss.width, rs.width), ss.height); } } void Slider::_gui_input(Ref<InputEvent> p_event) { if (!editable) { return; } Ref<InputEventMouseButton> mb = p_event; if (mb.is_valid()) { if (mb->get_button_index() == BUTTON_LEFT) { if (mb->is_pressed()) { Ref<Texture> grabber = get_icon(mouse_inside || has_focus() ? "grabber_highlight" : "grabber"); grab.pos = orientation == VERTICAL ? mb->get_position().y : mb->get_position().x; double grab_width = (double)grabber->get_size().width; double grab_height = (double)grabber->get_size().height; double max = orientation == VERTICAL ? get_size().height - grab_height : get_size().width - grab_width; if (orientation == VERTICAL) { set_as_ratio(1 - (((double)grab.pos - (grab_height / 2.0)) / max)); } else { set_as_ratio(((double)grab.pos - (grab_width / 2.0)) / max); } grab.active = true; grab.uvalue = get_as_ratio(); emit_signal("drag_started"); } else { grab.active = false; const bool value_changed = !Math::is_equal_approx((double)grab.uvalue, get_as_ratio()); emit_signal("drag_ended", value_changed); } } else if (scrollable) { if (mb->is_pressed() && mb->get_button_index() == BUTTON_WHEEL_UP) { grab_focus(); set_value(get_value() + get_step()); } else if (mb->is_pressed() && mb->get_button_index() == BUTTON_WHEEL_DOWN) { grab_focus(); set_value(get_value() - get_step()); } } } Ref<InputEventMouseMotion> mm = p_event; if (mm.is_valid()) { if (grab.active) { Size2i size = get_size(); Ref<Texture> grabber = get_icon("grabber"); float motion = (orientation == VERTICAL ? mm->get_position().y : mm->get_position().x) - grab.pos; if (orientation == VERTICAL) { motion = -motion; } float areasize = orientation == VERTICAL ? size.height - grabber->get_size().height : size.width - grabber->get_size().width; if (areasize <= 0) { return; } float umotion = motion / float(areasize); set_as_ratio(grab.uvalue + umotion); } } if (!mm.is_valid() && !mb.is_valid()) { if (p_event->is_action_pressed("ui_left", true)) { if (orientation != HORIZONTAL) { return; } set_value(get_value() - (custom_step >= 0 ? custom_step : get_step())); accept_event(); } else if (p_event->is_action_pressed("ui_right", true)) { if (orientation != HORIZONTAL) { return; } set_value(get_value() + (custom_step >= 0 ? custom_step : get_step())); accept_event(); } else if (p_event->is_action_pressed("ui_up", true)) { if (orientation != VERTICAL) { return; } set_value(get_value() + (custom_step >= 0 ? custom_step : get_step())); accept_event(); } else if (p_event->is_action_pressed("ui_down", true)) { if (orientation != VERTICAL) { return; } set_value(get_value() - (custom_step >= 0 ? custom_step : get_step())); accept_event(); } else if (p_event->is_action("ui_home") && p_event->is_pressed()) { set_value(get_min()); accept_event(); } else if (p_event->is_action("ui_end") && p_event->is_pressed()) { set_value(get_max()); accept_event(); } } } void Slider::_notification(int p_what) { switch (p_what) { case NOTIFICATION_THEME_CHANGED: { minimum_size_changed(); update(); } break; case NOTIFICATION_MOUSE_ENTER: { mouse_inside = true; update(); } break; case NOTIFICATION_MOUSE_EXIT: { mouse_inside = false; update(); } break; case NOTIFICATION_VISIBILITY_CHANGED: // fallthrough case NOTIFICATION_EXIT_TREE: { mouse_inside = false; grab.active = false; } break; case NOTIFICATION_DRAW: { RID ci = get_canvas_item(); Size2i size = get_size(); Ref<StyleBox> style = get_stylebox("slider"); bool highlighted = mouse_inside || has_focus(); Ref<StyleBox> grabber_area = get_stylebox(highlighted ? "grabber_area_highlight" : "grabber_area"); Ref<Texture> grabber = get_icon(editable ? (highlighted ? "grabber_highlight" : "grabber") : "grabber_disabled"); Ref<Texture> tick = get_icon("tick"); double ratio = Math::is_nan(get_as_ratio()) ? 0 : get_as_ratio(); if (orientation == VERTICAL) { int widget_width = style->get_minimum_size().width + style->get_center_size().width; float areasize = size.height - grabber->get_size().height; style->draw(ci, Rect2i(Point2i(size.width / 2 - widget_width / 2, 0), Size2i(widget_width, size.height))); grabber_area->draw(ci, Rect2i(Point2i((size.width - widget_width) / 2, size.height - areasize * ratio - grabber->get_size().height / 2), Size2i(widget_width, areasize * ratio + grabber->get_size().height / 2))); if (ticks > 1) { int grabber_offset = (grabber->get_size().height / 2 - tick->get_height() / 2); for (int i = 0; i < ticks; i++) { if (!ticks_on_borders && (i == 0 || i + 1 == ticks)) { continue; } int ofs = (i * areasize / (ticks - 1)) + grabber_offset; tick->draw(ci, Point2i((size.width - widget_width) / 2, ofs)); } } grabber->draw(ci, Point2i(size.width / 2 - grabber->get_size().width / 2, size.height - ratio * areasize - grabber->get_size().height)); } else { int widget_height = style->get_minimum_size().height + style->get_center_size().height; float areasize = size.width - grabber->get_size().width; style->draw(ci, Rect2i(Point2i(0, (size.height - widget_height) / 2), Size2i(size.width, widget_height))); grabber_area->draw(ci, Rect2i(Point2i(0, (size.height - widget_height) / 2), Size2i(areasize * ratio + grabber->get_size().width / 2, widget_height))); if (ticks > 1) { int grabber_offset = (grabber->get_size().width / 2 - tick->get_width() / 2); for (int i = 0; i < ticks; i++) { if ((!ticks_on_borders) && ((i == 0) || ((i + 1) == ticks))) { continue; } int ofs = (i * areasize / (ticks - 1)) + grabber_offset; tick->draw(ci, Point2i(ofs, (size.height - widget_height) / 2)); } } grabber->draw(ci, Point2i(ratio * areasize, size.height / 2 - grabber->get_size().height / 2)); } } break; } } void Slider::set_custom_step(float p_custom_step) { custom_step = p_custom_step; } float Slider::get_custom_step() const { return custom_step; } void Slider::set_ticks(int p_count) { ticks = p_count; update(); } int Slider::get_ticks() const { return ticks; } bool Slider::get_ticks_on_borders() const { return ticks_on_borders; } void Slider::set_ticks_on_borders(bool _tob) { ticks_on_borders = _tob; update(); } void Slider::set_editable(bool p_editable) { editable = p_editable; update(); } bool Slider::is_editable() const { return editable; } void Slider::set_scrollable(bool p_scrollable) { scrollable = p_scrollable; } bool Slider::is_scrollable() const { return scrollable; } void Slider::_bind_methods() { ClassDB::bind_method(D_METHOD("_gui_input"), &Slider::_gui_input); ClassDB::bind_method(D_METHOD("set_ticks", "count"), &Slider::set_ticks); ClassDB::bind_method(D_METHOD("get_ticks"), &Slider::get_ticks); ClassDB::bind_method(D_METHOD("get_ticks_on_borders"), &Slider::get_ticks_on_borders); ClassDB::bind_method(D_METHOD("set_ticks_on_borders", "ticks_on_border"), &Slider::set_ticks_on_borders); ClassDB::bind_method(D_METHOD("set_editable", "editable"), &Slider::set_editable); ClassDB::bind_method(D_METHOD("is_editable"), &Slider::is_editable); ClassDB::bind_method(D_METHOD("set_scrollable", "scrollable"), &Slider::set_scrollable); ClassDB::bind_method(D_METHOD("is_scrollable"), &Slider::is_scrollable); ADD_SIGNAL(MethodInfo("drag_started")); ADD_SIGNAL(MethodInfo("drag_ended", PropertyInfo(Variant::BOOL, "value_changed"))); ADD_PROPERTY(PropertyInfo(Variant::BOOL, "editable"), "set_editable", "is_editable"); ADD_PROPERTY(PropertyInfo(Variant::BOOL, "scrollable"), "set_scrollable", "is_scrollable"); ADD_PROPERTY(PropertyInfo(Variant::INT, "tick_count", PROPERTY_HINT_RANGE, "0,4096,1"), "set_ticks", "get_ticks"); ADD_PROPERTY(PropertyInfo(Variant::BOOL, "ticks_on_borders"), "set_ticks_on_borders", "get_ticks_on_borders"); } Slider::Slider(Orientation p_orientation) { orientation = p_orientation; mouse_inside = false; grab.active = false; ticks = 0; ticks_on_borders = false; custom_step = -1; editable = true; scrollable = true; set_focus_mode(FOCUS_ALL); }