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virtualx-engine/scene/gui/scroll_bar.cpp
Rémi Verschelde 93ab45b6b5 Style: Fix whole-line commented code 
They do not play well with clang-format which aligns the `//` part
with the rest of the code block, thus producing badly indented commented code.
2017-01-14 14:52:23 +01:00

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/*************************************************************************/
/* scroll_bar.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 "scroll_bar.h"
#include "os/keyboard.h"
#include "print_string.h"
#include "os/os.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(InputEvent p_event) {
switch(p_event.type) {
case InputEvent::MOUSE_BUTTON: {
const InputEventMouseButton &b=p_event.mouse_button;
accept_event();
if (b.button_index==5 && b.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.button_index==4 && b.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.button_index!=1)
return;
if (b.pressed) {
double ofs = orientation==VERTICAL ? b.y : b.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()) );
break;
}
if (ofs > total-incr_size ) {
set_value( get_value() + (custom_step>=0?custom_step:get_step()) );
break;
}
ofs-=decr_size;
if ( ofs < grabber_ofs ) {
set_value( get_value() - get_page() );
break;
}
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 {
set_value( get_value() + get_page() );
}
} else {
drag.active=false;
update();
}
} break;
case InputEvent::MOUSE_MOTION: {
const InputEventMouseMotion &m=p_event.mouse_motion;
accept_event();
if (drag.active) {
double ofs = orientation==VERTICAL ? m.y : m.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.y : m.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;
HiliteStatus new_hilite;
if (ofs < decr_size ) {
new_hilite=HILITE_DECR;
} else if (ofs > total-incr_size ) {
new_hilite=HILITE_INCR;
} else {
new_hilite=HILITE_RANGE;
}
if (new_hilite!=hilite) {
hilite=new_hilite;
update();
}
}
} break;
case InputEvent::KEY: {
const InputEventKey &k=p_event.key;
if (!k.pressed)
return;
switch (k.scancode) {
case KEY_LEFT: {
if (orientation!=HORIZONTAL)
return;
set_value( get_value() - (custom_step>=0?custom_step:get_step()) );
} break;
case KEY_RIGHT: {
if (orientation!=HORIZONTAL)
return;
set_value( get_value() + (custom_step>=0?custom_step:get_step()) );
} break;
case KEY_UP: {
if (orientation!=VERTICAL)
return;
set_value( get_value() - (custom_step>=0?custom_step:get_step()) );
} break;
case KEY_DOWN: {
if (orientation!=VERTICAL)
return;
set_value( get_value() + (custom_step>=0?custom_step:get_step()) );
} break;
case KEY_HOME: {
set_value( get_min() );
} break;
case KEY_END: {
set_value( get_max() );
} break;
} break;
}
}
}
void ScrollBar::_notification(int p_what) {
if (p_what==NOTIFICATION_DRAW) {
RID ci = get_canvas_item();
Ref<Texture> decr = hilite==HILITE_DECR ? get_icon("decrement_hilite") : get_icon("decrement");
Ref<Texture> incr = hilite==HILITE_INCR ? get_icon("increment_hilite") : get_icon("increment");
Ref<StyleBox> bg = has_focus() ? get_stylebox("scroll_focus") : get_stylebox("scroll");
Ref<StyleBox> grabber = (drag.active || hilite==HILITE_RANGE) ? get_stylebox("grabber_hilite") : get_stylebox("grabber");
Point2 ofs;
VisualServer *vs = VisualServer::get_singleton();
vs->canvas_item_add_texture_rect( ci, Rect2( Point2(), decr->get_size()),decr->get_rid() );
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;
vs->canvas_item_add_texture_rect( ci, Rect2( ofs, decr->get_size()),incr->get_rid() );
Rect2 grabber_rect;
if (orientation==HORIZONTAL) {
grabber_rect.size.width=get_grabber_size();
grabber_rect.size.height=get_size().height;
grabber_rect.pos.y=0;
grabber_rect.pos.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.pos.y=get_grabber_offset()+decr->get_height()+bg->get_margin( MARGIN_TOP );
grabber_rect.pos.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=n->cast_to<Control>();
}
if (drag_slave) {
drag_slave->connect("gui_input",this,"_drag_slave_input");
drag_slave->connect("tree_exited",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_exited",this,"_drag_slave_exit");
}
drag_slave=NULL;
}
if (p_what==NOTIFICATION_FIXED_PROCESS) {
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_fixed_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_fixed_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_fixed_process_delta_time();
if (val_y<0) {
turnoff=true;
}
drag_slave_speed.y=sgn_y*val_y;
}
if (turnoff) {
set_fixed_process(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_fixed_process_delta_time();
}
time_since_motion+=get_fixed_process_delta_time();
}
}
}
if (p_what==NOTIFICATION_MOUSE_EXIT) {
hilite=HILITE_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 InputEvent& p_input) {
switch(p_input.type) {
case InputEvent::MOUSE_BUTTON: {
const InputEventMouseButton &mb=p_input.mouse_button;
if (mb.button_index!=1)
break;
if (mb.pressed) {
if (drag_slave_touching) {
set_fixed_process(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_fixed_process(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_fixed_process(false);
} else {
drag_slave_touching_deaccel=true;
}
}
}
} break;
case InputEvent::MOUSE_MOTION: {
const InputEventMouseMotion &mm=p_input.mouse_motion;
if (drag_slave_touching && ! drag_slave_touching_deaccel) {
Vector2 motion = Vector2(mm.relative_x,mm.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;
}
} break;
}
}
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_exited",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=n->cast_to<Control>();
}
if (drag_slave) {
drag_slave->connect("gui_input",this,"_drag_slave_input");
drag_slave->connect("tree_exited",this,"_drag_slave_exit",varray(),CONNECT_ONESHOT);
}
}
}
NodePath ScrollBar::get_drag_slave() const{
return drag_slave_path;
}
#if 0
void ScrollBar::mouse_button(const Point2& p_pos, int b.button_index,bool b.pressed,int p_modifier_mask) {
// wheel!
if (b.button_index==BUTTON_WHEEL_UP && b.pressed) {
if (orientation==VERTICAL)
set_val( get_val() - get_page() / 4.0 );
else
set_val( get_val() + get_page() / 4.0 );
}
if (b.button_index==BUTTON_WHEEL_DOWN && b.pressed) {
if (orientation==HORIZONTAL)
set_val( get_val() - get_page() / 4.0 );
else
set_val( get_val() + get_page() / 4.0 );
}
if (b.button_index!=BUTTON_LEFT)
return;
if (b.pressed) {
int ofs = orientation==VERTICAL ? p_pos.y : p_pos.x ;
int grabber_ofs = get_grabber_offset();
int grabber_size = get_grabber_size();
if ( ofs < grabber_ofs ) {
set_val( get_val() - get_page() );
} else if (ofs > grabber_ofs + grabber_size ) {
set_val( get_val() + get_page() );
} else {
drag.active=true;
drag.pos_at_click=get_click_pos(p_pos);
drag.value_at_click=get_unit_value();
}
} else {
drag.active=false;
}
}
void ScrollBar::mouse_motion(const Point2& p_pos, const Point2& p_rel, int b.button_index_mask) {
if (!drag.active)
return;
double value_ofs=drag.value_at_click+(get_click_pos(p_pos)-drag.pos_at_click);
value_ofs=value_ofs*( get_max() - get_min() );
if (value_ofs<get_min())
value_ofs=get_min();
if (value_ofs>(get_max()-get_page()))
value_ofs=get_max()-get_page();
if (get_val()==value_ofs)
return; //dont bother if the value is the same
set_val( value_ofs );
}
bool ScrollBar::key(unsigned long p_unicode, unsigned long p_scan_code,bool b.pressed,bool p_repeat,int p_modifier_mask) {
if (!b.pressed)
return false;
switch (p_scan_code) {
case KEY_LEFT: {
if (orientation!=HORIZONTAL)
return false;
set_val( get_val() - get_step() );
} break;
case KEY_RIGHT: {
if (orientation!=HORIZONTAL)
return false;
set_val( get_val() + get_step() );
} break;
case KEY_UP: {
if (orientation!=VERTICAL)
return false;
set_val( get_val() - get_step() );
} break;
case KEY_DOWN: {
if (orientation!=VERTICAL)
return false;
set_val( get_val() + get_step() );
} break;
case KEY_HOME: {
set_val( get_min() );
} break;
case KEY_END: {
set_val( get_max() );
} break;
default:
return false;
}
return true;
}
#endif
void ScrollBar::_bind_methods() {
ClassDB::bind_method(_MD("_gui_input"),&ScrollBar::_gui_input);
ClassDB::bind_method(_MD("set_custom_step","step"),&ScrollBar::set_custom_step);
ClassDB::bind_method(_MD("get_custom_step"),&ScrollBar::get_custom_step);
ClassDB::bind_method(_MD("_drag_slave_input"),&ScrollBar::_drag_slave_input);
ClassDB::bind_method(_MD("_drag_slave_exit"),&ScrollBar::_drag_slave_exit);
ADD_PROPERTY( PropertyInfo(Variant::REAL,"custom_step",PROPERTY_HINT_RANGE,"-1,4096"), _SCS("set_custom_step"),_SCS("get_custom_step"));
}
ScrollBar::ScrollBar(Orientation p_orientation)
{
orientation=p_orientation;
hilite=HILITE_NONE;
custom_step=-1;
drag_slave=NULL;
drag.active=false;
drag_slave_speed=Vector2();
drag_slave_touching=false;
drag_slave_touching_deaccel=false;
if (focus_by_default)
set_focus_mode( FOCUS_ALL );
set_step(0);
}
ScrollBar::~ScrollBar()
{
}
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