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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. */
/* */
/* 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(InputEvent p_event) {
if (p_event.type==InputEvent::MOUSE_BUTTON) {
InputEventMouseButton &mb = p_event.mouse_button;
if (mb.button_index==BUTTON_LEFT) {
if (mb.pressed) {
Ref<Texture> grabber = get_icon(mouse_inside||has_focus()?"grabber_hilite":"grabber");
grab.pos=orientation==VERTICAL?mb.y:mb.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.pressed && mb.button_index==BUTTON_WHEEL_UP) {
set_value( get_value() + get_step());
} else if (mb.pressed && mb.button_index==BUTTON_WHEEL_DOWN) {
set_value( get_value() - get_step());
}
} else if (p_event.type==InputEvent::MOUSE_MOTION) {
if (grab.active) {
Size2i size = get_size();
Ref<Texture> grabber = get_icon("grabber");
float motion = (orientation==VERTICAL?p_event.mouse_motion.y:p_event.mouse_motion.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 );
}
} else {
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 if (p_event.type==InputEvent::KEY) {
const InputEventKey &k=p_event.key;
if (!k.pressed)
return;
switch (k.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_hilite":"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(_MD("_gui_input"),&Slider::_gui_input);
ClassDB::bind_method(_MD("set_ticks","count"),&Slider::set_ticks);
ClassDB::bind_method(_MD("get_ticks"),&Slider::get_ticks);
ClassDB::bind_method(_MD("get_ticks_on_borders"),&Slider::get_ticks_on_borders);
ClassDB::bind_method(_MD("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"), _SCS("set_ticks"), _SCS("get_ticks") );
ADD_PROPERTY( PropertyInfo( Variant::BOOL, "ticks_on_borders" ), _SCS("set_ticks_on_borders"), _SCS("get_ticks_on_borders") );
ADD_PROPERTY( PropertyInfo( Variant::INT,"focus_mode", PROPERTY_HINT_ENUM, "None,Click,All" ), _SCS("set_focus_mode"), _SCS("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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