/*************************************************************************/ /* scroll_bar.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2018 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 "scroll_bar.h" #include "os/keyboard.h" #include "os/os.h" #include "print_string.h" bool ScrollBar::focus_by_default = false; void ScrollBar::set_can_focus_by_default(bool p_can_focus) { focus_by_default = p_can_focus; } void ScrollBar::_gui_input(Ref<InputEvent> p_event) { Ref<InputEventMouseMotion> m = p_event; if (!m.is_valid() || drag.active) { emit_signal("scrolling"); } Ref<InputEventMouseButton> b = p_event; if (b.is_valid()) { accept_event(); if (b->get_button_index() == 5 && b->is_pressed()) { /* if (orientation==VERTICAL) set_val( get_val() + get_page() / 4.0 ); else */ set_value(get_value() + get_page() / 4.0); accept_event(); } if (b->get_button_index() == 4 && b->is_pressed()) { /* if (orientation==HORIZONTAL) set_val( get_val() - get_page() / 4.0 ); else */ set_value(get_value() - get_page() / 4.0); accept_event(); } if (b->get_button_index() != 1) return; if (b->is_pressed()) { double ofs = orientation == VERTICAL ? b->get_position().y : b->get_position().x; Ref<Texture> decr = get_icon("decrement"); Ref<Texture> incr = get_icon("increment"); double decr_size = orientation == VERTICAL ? decr->get_height() : decr->get_width(); double incr_size = orientation == VERTICAL ? incr->get_height() : incr->get_width(); double grabber_ofs = get_grabber_offset(); double grabber_size = get_grabber_size(); double total = orientation == VERTICAL ? get_size().height : get_size().width; if (ofs < decr_size) { set_value(get_value() - (custom_step >= 0 ? custom_step : get_step())); return; } if (ofs > total - incr_size) { set_value(get_value() + (custom_step >= 0 ? custom_step : get_step())); return; } ofs -= decr_size; if (ofs < grabber_ofs) { if (scrolling) { target_scroll = CLAMP(target_scroll - get_page(), get_min(), get_max() - get_page()); } else { target_scroll = CLAMP(get_value() - get_page(), get_min(), get_max() - get_page()); } if (smooth_scroll_enabled) { scrolling = true; set_physics_process_internal(true); } else { set_value(target_scroll); } return; } ofs -= grabber_ofs; if (ofs < grabber_size) { drag.active = true; drag.pos_at_click = grabber_ofs + ofs; drag.value_at_click = get_as_ratio(); update(); } else { if (scrolling) { target_scroll = CLAMP(target_scroll + get_page(), get_min(), get_max() - get_page()); } else { target_scroll = CLAMP(get_value() + get_page(), get_min(), get_max() - get_page()); } if (smooth_scroll_enabled) { scrolling = true; set_physics_process_internal(true); } else { set_value(target_scroll); } } } else { drag.active = false; update(); } } if (m.is_valid()) { accept_event(); if (drag.active) { double ofs = orientation == VERTICAL ? m->get_position().y : m->get_position().x; Ref<Texture> decr = get_icon("decrement"); double decr_size = orientation == VERTICAL ? decr->get_height() : decr->get_width(); ofs -= decr_size; double diff = (ofs - drag.pos_at_click) / get_area_size(); set_as_ratio(drag.value_at_click + diff); } else { double ofs = orientation == VERTICAL ? m->get_position().y : m->get_position().x; Ref<Texture> decr = get_icon("decrement"); Ref<Texture> incr = get_icon("increment"); double decr_size = orientation == VERTICAL ? decr->get_height() : decr->get_width(); double incr_size = orientation == VERTICAL ? incr->get_height() : incr->get_width(); double total = orientation == VERTICAL ? get_size().height : get_size().width; HighlightStatus new_hilite; if (ofs < decr_size) { new_hilite = HIGHLIGHT_DECR; } else if (ofs > total - incr_size) { new_hilite = HIGHLIGHT_INCR; } else { new_hilite = HIGHLIGHT_RANGE; } if (new_hilite != highlight) { highlight = new_hilite; update(); } } } if (p_event->is_pressed()) { if (p_event->is_action("ui_left")) { if (orientation != HORIZONTAL) return; set_value(get_value() - (custom_step >= 0 ? custom_step : get_step())); } else if (p_event->is_action("ui_right")) { if (orientation != HORIZONTAL) return; set_value(get_value() + (custom_step >= 0 ? custom_step : get_step())); } else if (p_event->is_action("ui_up")) { if (orientation != VERTICAL) return; set_value(get_value() - (custom_step >= 0 ? custom_step : get_step())); } else if (p_event->is_action("ui_down")) { if (orientation != VERTICAL) return; set_value(get_value() + (custom_step >= 0 ? custom_step : get_step())); } else if (p_event->is_action("ui_home")) { set_value(get_min()); } else if (p_event->is_action("ui_end")) { set_value(get_max()); } } } void ScrollBar::_notification(int p_what) { if (p_what == NOTIFICATION_DRAW) { RID ci = get_canvas_item(); Ref<Texture> decr = highlight == HIGHLIGHT_DECR ? get_icon("decrement_highlight") : get_icon("decrement"); Ref<Texture> incr = highlight == HIGHLIGHT_INCR ? get_icon("increment_highlight") : get_icon("increment"); Ref<StyleBox> bg = has_focus() ? get_stylebox("scroll_focus") : get_stylebox("scroll"); Ref<StyleBox> grabber; if (drag.active) grabber = get_stylebox("grabber_pressed"); else if (highlight == HIGHLIGHT_RANGE) grabber = get_stylebox("grabber_highlight"); else grabber = get_stylebox("grabber"); Point2 ofs; decr->draw(ci, Point2()); if (orientation == HORIZONTAL) ofs.x += decr->get_width(); else ofs.y += decr->get_height(); Size2 area = get_size(); if (orientation == HORIZONTAL) area.width -= incr->get_width() + decr->get_width(); else area.height -= incr->get_height() + decr->get_height(); bg->draw(ci, Rect2(ofs, area)); if (orientation == HORIZONTAL) ofs.width += area.width; else ofs.height += area.height; incr->draw(ci, ofs); Rect2 grabber_rect; if (orientation == HORIZONTAL) { grabber_rect.size.width = get_grabber_size(); grabber_rect.size.height = get_size().height; grabber_rect.position.y = 0; grabber_rect.position.x = get_grabber_offset() + decr->get_width() + bg->get_margin(MARGIN_LEFT); } else { grabber_rect.size.width = get_size().width; grabber_rect.size.height = get_grabber_size(); grabber_rect.position.y = get_grabber_offset() + decr->get_height() + bg->get_margin(MARGIN_TOP); grabber_rect.position.x = 0; } grabber->draw(ci, grabber_rect); } if (p_what == NOTIFICATION_ENTER_TREE) { if (has_node(drag_slave_path)) { Node *n = get_node(drag_slave_path); drag_slave = Object::cast_to<Control>(n); } if (drag_slave) { drag_slave->connect("gui_input", this, "_drag_slave_input"); drag_slave->connect("tree_exiting", this, "_drag_slave_exit", varray(), CONNECT_ONESHOT); } } if (p_what == NOTIFICATION_EXIT_TREE) { if (drag_slave) { drag_slave->disconnect("gui_input", this, "_drag_slave_input"); drag_slave->disconnect("tree_exiting", this, "_drag_slave_exit"); } drag_slave = NULL; } if (p_what == NOTIFICATION_INTERNAL_PHYSICS_PROCESS) { if (scrolling) { if (get_value() != target_scroll) { double target = target_scroll - get_value(); double dist = sqrt(target * target); double vel = ((target / dist) * 500) * get_physics_process_delta_time(); if (Math::abs(vel) >= dist) { set_value(target_scroll); } else { set_value(get_value() + vel); } } else { scrolling = false; set_physics_process_internal(false); } } else if (drag_slave_touching) { if (drag_slave_touching_deaccel) { Vector2 pos = Vector2(orientation == HORIZONTAL ? get_value() : 0, orientation == VERTICAL ? get_value() : 0); pos += drag_slave_speed * get_physics_process_delta_time(); bool turnoff = false; if (orientation == HORIZONTAL) { if (pos.x < 0) { pos.x = 0; turnoff = true; } if (pos.x > (get_max() - get_page())) { pos.x = get_max() - get_page(); turnoff = true; } set_value(pos.x); float sgn_x = drag_slave_speed.x < 0 ? -1 : 1; float val_x = Math::abs(drag_slave_speed.x); val_x -= 1000 * get_physics_process_delta_time(); if (val_x < 0) { turnoff = true; } drag_slave_speed.x = sgn_x * val_x; } else { if (pos.y < 0) { pos.y = 0; turnoff = true; } if (pos.y > (get_max() - get_page())) { pos.y = get_max() - get_page(); turnoff = true; } set_value(pos.y); float sgn_y = drag_slave_speed.y < 0 ? -1 : 1; float val_y = Math::abs(drag_slave_speed.y); val_y -= 1000 * get_physics_process_delta_time(); if (val_y < 0) { turnoff = true; } drag_slave_speed.y = sgn_y * val_y; } if (turnoff) { set_physics_process_internal(false); drag_slave_touching = false; drag_slave_touching_deaccel = false; } } else { if (time_since_motion == 0 || time_since_motion > 0.1) { Vector2 diff = drag_slave_accum - last_drag_slave_accum; last_drag_slave_accum = drag_slave_accum; drag_slave_speed = diff / get_physics_process_delta_time(); } time_since_motion += get_physics_process_delta_time(); } } } if (p_what == NOTIFICATION_MOUSE_EXIT) { highlight = HIGHLIGHT_NONE; update(); } } double ScrollBar::get_grabber_min_size() const { Ref<StyleBox> grabber = get_stylebox("grabber"); Size2 gminsize = grabber->get_minimum_size() + grabber->get_center_size(); return (orientation == VERTICAL) ? gminsize.height : gminsize.width; } double ScrollBar::get_grabber_size() const { float range = get_max() - get_min(); if (range <= 0) return 0; float page = (get_page() > 0) ? get_page() : 0; /* if (grabber_range < get_step()) grabber_range=get_step(); */ double area_size = get_area_size(); double grabber_size = page / range * area_size; return grabber_size + get_grabber_min_size(); } double ScrollBar::get_area_size() const { if (orientation == VERTICAL) { double area = get_size().height; area -= get_stylebox("scroll")->get_minimum_size().height; area -= get_icon("increment")->get_height(); area -= get_icon("decrement")->get_height(); area -= get_grabber_min_size(); return area; } else if (orientation == HORIZONTAL) { double area = get_size().width; area -= get_stylebox("scroll")->get_minimum_size().width; area -= get_icon("increment")->get_width(); area -= get_icon("decrement")->get_width(); area -= get_grabber_min_size(); return area; } else { return 0; } } double ScrollBar::get_area_offset() const { double ofs = 0; if (orientation == VERTICAL) { ofs += get_stylebox("hscroll")->get_margin(MARGIN_TOP); ofs += get_icon("decrement")->get_height(); } if (orientation == HORIZONTAL) { ofs += get_stylebox("hscroll")->get_margin(MARGIN_LEFT); ofs += get_icon("decrement")->get_width(); } return ofs; } double ScrollBar::get_click_pos(const Point2 &p_pos) const { float pos = (orientation == VERTICAL) ? p_pos.y : p_pos.x; pos -= get_area_offset(); float area = get_area_size(); if (area == 0) return 0; else return pos / area; } double ScrollBar::get_grabber_offset() const { return (get_area_size()) * get_as_ratio(); } Size2 ScrollBar::get_minimum_size() const { Ref<Texture> incr = get_icon("increment"); Ref<Texture> decr = get_icon("decrement"); Ref<StyleBox> bg = get_stylebox("scroll"); Size2 minsize; if (orientation == VERTICAL) { minsize.width = MAX(incr->get_size().width, (bg->get_minimum_size() + bg->get_center_size()).width); minsize.height += incr->get_size().height; minsize.height += decr->get_size().height; minsize.height += bg->get_minimum_size().height; minsize.height += get_grabber_min_size(); } if (orientation == HORIZONTAL) { minsize.height = MAX(incr->get_size().height, (bg->get_center_size() + bg->get_minimum_size()).height); minsize.width += incr->get_size().width; minsize.width += decr->get_size().width; minsize.width += bg->get_minimum_size().width; minsize.width += get_grabber_min_size(); } return minsize; } void ScrollBar::set_custom_step(float p_custom_step) { custom_step = p_custom_step; } float ScrollBar::get_custom_step() const { return custom_step; } void ScrollBar::_drag_slave_exit() { if (drag_slave) { drag_slave->disconnect("gui_input", this, "_drag_slave_input"); } drag_slave = NULL; } void ScrollBar::_drag_slave_input(const Ref<InputEvent> &p_input) { Ref<InputEventMouseButton> mb = p_input; if (mb.is_valid()) { if (mb->get_button_index() != 1) return; if (mb->is_pressed()) { if (drag_slave_touching) { set_physics_process_internal(false); drag_slave_touching_deaccel = false; drag_slave_touching = false; drag_slave_speed = Vector2(); drag_slave_accum = Vector2(); last_drag_slave_accum = Vector2(); drag_slave_from = Vector2(); } if (true) { drag_slave_speed = Vector2(); drag_slave_accum = Vector2(); last_drag_slave_accum = Vector2(); //drag_slave_from=Vector2(h_scroll->get_val(),v_scroll->get_val()); drag_slave_from = Vector2(orientation == HORIZONTAL ? get_value() : 0, orientation == VERTICAL ? get_value() : 0); drag_slave_touching = OS::get_singleton()->has_touchscreen_ui_hint(); drag_slave_touching_deaccel = false; time_since_motion = 0; if (drag_slave_touching) { set_physics_process_internal(true); time_since_motion = 0; } } } else { if (drag_slave_touching) { if (drag_slave_speed == Vector2()) { drag_slave_touching_deaccel = false; drag_slave_touching = false; set_physics_process_internal(false); } else { drag_slave_touching_deaccel = true; } } } } Ref<InputEventMouseMotion> mm = p_input; if (mm.is_valid()) { if (drag_slave_touching && !drag_slave_touching_deaccel) { Vector2 motion = Vector2(mm->get_relative().x, mm->get_relative().y); drag_slave_accum -= motion; Vector2 diff = drag_slave_from + drag_slave_accum; if (orientation == HORIZONTAL) set_value(diff.x); /* else drag_slave_accum.x=0; */ if (orientation == VERTICAL) set_value(diff.y); /* else drag_slave_accum.y=0; */ time_since_motion = 0; } } } void ScrollBar::set_drag_slave(const NodePath &p_path) { if (is_inside_tree()) { if (drag_slave) { drag_slave->disconnect("gui_input", this, "_drag_slave_input"); drag_slave->disconnect("tree_exiting", this, "_drag_slave_exit"); } } drag_slave = NULL; drag_slave_path = p_path; if (is_inside_tree()) { if (has_node(p_path)) { Node *n = get_node(p_path); drag_slave = Object::cast_to<Control>(n); } if (drag_slave) { drag_slave->connect("gui_input", this, "_drag_slave_input"); drag_slave->connect("tree_exiting", this, "_drag_slave_exit", varray(), CONNECT_ONESHOT); } } } NodePath ScrollBar::get_drag_slave() const { return drag_slave_path; } void ScrollBar::set_smooth_scroll_enabled(bool p_enable) { smooth_scroll_enabled = p_enable; } bool ScrollBar::is_smooth_scroll_enabled() const { return smooth_scroll_enabled; } void ScrollBar::_bind_methods() { ClassDB::bind_method(D_METHOD("_gui_input"), &ScrollBar::_gui_input); ClassDB::bind_method(D_METHOD("set_custom_step", "step"), &ScrollBar::set_custom_step); ClassDB::bind_method(D_METHOD("get_custom_step"), &ScrollBar::get_custom_step); ClassDB::bind_method(D_METHOD("_drag_slave_input"), &ScrollBar::_drag_slave_input); ClassDB::bind_method(D_METHOD("_drag_slave_exit"), &ScrollBar::_drag_slave_exit); ADD_SIGNAL(MethodInfo("scrolling")); ADD_PROPERTY(PropertyInfo(Variant::REAL, "custom_step", PROPERTY_HINT_RANGE, "-1,4096"), "set_custom_step", "get_custom_step"); } ScrollBar::ScrollBar(Orientation p_orientation) { orientation = p_orientation; highlight = HIGHLIGHT_NONE; custom_step = -1; drag_slave = NULL; drag.active = false; drag_slave_speed = Vector2(); drag_slave_touching = false; drag_slave_touching_deaccel = false; scrolling = false; target_scroll = 0; smooth_scroll_enabled = false; if (focus_by_default) set_focus_mode(FOCUS_ALL); set_step(0); } ScrollBar::~ScrollBar() { }