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godot/scene/gui/slider.cpp

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/*************************************************************************/
/* slider.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.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 "slider.h"
#include "os/keyboard.h"
Size2 Slider::get_minimum_size() const {
Ref<StyleBox> style = get_stylebox("slider");
Size2i ms = style->get_minimum_size() + style->get_center_size();
return ms;
}
void Slider::_gui_input(Ref<InputEvent> p_event) {
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();
} else {
grab.active = false;
}
} else if (mb->is_pressed() && mb->get_button_index() == BUTTON_WHEEL_UP) {
set_value(get_value() + get_step());
} else if (mb->is_pressed() && mb->get_button_index() == BUTTON_WHEEL_DOWN) {
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("ui_left") && p_event->is_pressed()) {
if (orientation != HORIZONTAL)
return;
set_value(get_value() - (custom_step >= 0 ? custom_step : get_step()));
accept_event();
} else if (p_event->is_action("ui_right") && p_event->is_pressed()) {
if (orientation != HORIZONTAL)
return;
set_value(get_value() + (custom_step >= 0 ? custom_step : get_step()));
accept_event();
} else if (p_event->is_action("ui_up") && p_event->is_pressed()) {
if (orientation != VERTICAL)
return;
set_value(get_value() + (custom_step >= 0 ? custom_step : get_step()));
accept_event();
} else if (p_event->is_action("ui_down") && p_event->is_pressed()) {
if (orientation != VERTICAL)
return;
set_value(get_value() - (custom_step >= 0 ? custom_step : get_step()));
accept_event();
} else {
Ref<InputEventKey> k = p_event;
if (!k.is_valid() || !k->is_pressed())
return;
switch (k->get_scancode()) {
case KEY_HOME: {
set_value(get_min());
accept_event();
} break;
case KEY_END: {
set_value(get_max());
accept_event();
} break;
}
}
}
}
void Slider::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_MOUSE_ENTER: {
mouse_inside = true;
update();
} break;
case NOTIFICATION_MOUSE_EXIT: {
mouse_inside = false;
update();
} break;
case NOTIFICATION_DRAW: {
RID ci = get_canvas_item();
Size2i size = get_size();
Ref<StyleBox> style = get_stylebox("slider");
Ref<StyleBox> focus = get_stylebox("focus");
Ref<Texture> grabber = get_icon(mouse_inside || has_focus() ? "grabber_highlight" : "grabber");
Ref<Texture> tick = get_icon("tick");
if (orientation == VERTICAL) {
style->draw(ci, Rect2i(Point2i(), Size2i(style->get_minimum_size().width + style->get_center_size().width, size.height)));
/*
if (mouse_inside||has_focus())
focus->draw(ci,Rect2i(Point2i(),Size2i(style->get_minimum_size().width+style->get_center_size().width,size.height)));
*/
float areasize = size.height - grabber->get_size().height;
if (ticks > 1) {
int tickarea = size.height - tick->get_height();
for (int i = 0; i < ticks; i++) {
if (!ticks_on_borders && (i == 0 || i + 1 == ticks)) continue;
int ofs = i * tickarea / (ticks - 1);
tick->draw(ci, Point2(0, ofs));
}
}
grabber->draw(ci, Point2i(size.width / 2 - grabber->get_size().width / 2, size.height - get_as_ratio() * areasize - grabber->get_size().height));
} else {
style->draw(ci, Rect2i(Point2i(), Size2i(size.width, style->get_minimum_size().height + style->get_center_size().height)));
/*
if (mouse_inside||has_focus())
focus->draw(ci,Rect2i(Point2i(),Size2i(size.width,style->get_minimum_size().height+style->get_center_size().height)));
*/
float areasize = size.width - grabber->get_size().width;
if (ticks > 1) {
int tickarea = size.width - tick->get_width();
for (int i = 0; i < ticks; i++) {
if ((!ticks_on_borders) && ((i == 0) || ((i + 1) == ticks))) continue;
int ofs = i * tickarea / (ticks - 1);
tick->draw(ci, Point2(ofs, 0));
}
}
grabber->draw(ci, Point2i(get_as_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::_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);
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");
ADD_PROPERTY(PropertyInfo(Variant::INT, "focus_mode", PROPERTY_HINT_ENUM, "None,Click,All"), "set_focus_mode", "get_focus_mode");
}
Slider::Slider(Orientation p_orientation) {
orientation = p_orientation;
mouse_inside = false;
grab.active = false;
ticks = 0;
custom_step = -1;
set_focus_mode(FOCUS_ALL);
}
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