virtualx-engine/scene/gui/tabs.cpp
Rémi Verschelde d8223ffa75 Welcome in 2017, dear changelog reader!
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!

(cherry picked from commit c7bc44d5ad)
2017-01-12 19:15:30 +01:00

697 lines
16 KiB
C++

/*************************************************************************/
/* tabs.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 "tabs.h"
#include "message_queue.h"
Size2 Tabs::get_minimum_size() const {
Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
Ref<Font> font = get_font("font");
Size2 ms(0, MAX(tab_bg->get_minimum_size().height, tab_fg->get_minimum_size().height)+font->get_height());
for(int i=0;i<tabs.size();i++) {
Ref<Texture> tex = tabs[i].icon;
if (tex.is_valid()) {
ms.height = MAX(ms.height, tex->get_size().height);
if (tabs[i].text!="")
ms.width+=get_constant("hseparation");
}
ms.width+=font->get_string_size(tabs[i].text).width;
if (current==i)
ms.width+=tab_fg->get_minimum_size().width;
else
ms.width+=tab_bg->get_minimum_size().width;
if (tabs[i].right_button.is_valid()) {
Ref<Texture> rb=tabs[i].right_button;
Size2 bms = rb->get_size();
bms.width+=get_constant("hseparation");
ms.width+=bms.width;
ms.height=MAX(bms.height+tab_bg->get_minimum_size().height,ms.height);
}
if (cb_displaypolicy==CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy==CLOSE_BUTTON_SHOW_ACTIVE_ONLY && i==current)) {
Ref<Texture> cb=get_icon("close");
Size2 bms = cb->get_size();
bms.width+=get_constant("hseparation");
ms.width+=bms.width;
ms.height=MAX(bms.height+tab_bg->get_minimum_size().height,ms.height);
}
}
ms.width=0; //TODO: should make this optional
return ms;
}
void Tabs::_input_event(const InputEvent& p_event) {
if (p_event.type==InputEvent::MOUSE_MOTION) {
Point2 pos( p_event.mouse_motion.x, p_event.mouse_motion.y );
hilite_arrow=-1;
if (buttons_visible) {
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
int limit=get_size().width-incr->get_width()-decr->get_width();
if (pos.x>limit+decr->get_width()) {
hilite_arrow=1;
} else if (pos.x>limit) {
hilite_arrow=0;
}
}
// test hovering to display right or close button
int hover_buttons=-1;
hover=-1;
for(int i=0;i<tabs.size();i++) {
if (i<offset)
continue;
if (tabs[i].rb_rect.has_point(pos)) {
rb_hover=i;
cb_hover=-1;
hover_buttons = i;
break;
}
else if (tabs[i].cb_rect.has_point(pos)) {
cb_hover=i;
rb_hover=-1;
hover_buttons = i;
break;
}
}
if (hover_buttons == -1) { // no hover
rb_hover= hover_buttons;
cb_hover= hover_buttons;
}
update();
return;
}
if (rb_pressing && p_event.type==InputEvent::MOUSE_BUTTON &&
!p_event.mouse_button.pressed &&
p_event.mouse_button.button_index==BUTTON_LEFT) {
if (rb_hover!=-1) {
//pressed
emit_signal("right_button_pressed",rb_hover);
}
rb_pressing=false;
update();
}
if (cb_pressing && p_event.type==InputEvent::MOUSE_BUTTON &&
!p_event.mouse_button.pressed &&
p_event.mouse_button.button_index==BUTTON_LEFT) {
if (cb_hover!=-1) {
//pressed
emit_signal("tab_close",cb_hover);
}
cb_pressing=false;
update();
}
if (p_event.type==InputEvent::MOUSE_BUTTON &&
p_event.mouse_button.pressed &&
p_event.mouse_button.button_index==BUTTON_LEFT) {
// clicks
Point2 pos( p_event.mouse_button.x, p_event.mouse_button.y );
if (buttons_visible) {
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
int limit=get_size().width-incr->get_width()-decr->get_width();
if (pos.x>limit+decr->get_width()) {
if (missing_right) {
offset++;
update();
}
return;
} else if (pos.x>limit) {
if (offset>0) {
offset--;
update();
}
return;
}
}
int found=-1;
for(int i=0;i<tabs.size();i++) {
if (i<offset)
continue;
if (tabs[i].rb_rect.has_point(pos)) {
rb_pressing=true;
update();
return;
}
if (tabs[i].cb_rect.has_point(pos)) {
cb_pressing=true;
update();
return;
}
if (pos.x >=tabs[i].ofs_cache && pos.x<tabs[i].ofs_cache+tabs[i].size_cache) {
found=i;
break;
}
}
if (found!=-1) {
set_current_tab(found);
emit_signal("tab_changed",found);
}
}
}
void Tabs::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_MOUSE_EXIT: {
rb_hover=-1;
cb_hover=-1;
hover=-1;
update();
} break;
case NOTIFICATION_RESIZED: {
_ensure_no_over_offset();
} break;
case NOTIFICATION_DRAW: {
RID ci = get_canvas_item();
Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
Ref<Font> font = get_font("font");
Color color_fg = get_color("font_color_fg");
Color color_bg = get_color("font_color_bg");
Ref<Texture> close=get_icon("close");
int h = get_size().height;
int w = 0;
int mw = 0;
for(int i=0;i<tabs.size();i++) {
tabs[i].ofs_cache = mw;
mw += get_tab_width(i);
}
if (tab_align==ALIGN_CENTER) {
w=(get_size().width-mw)/2;
} else if (tab_align==ALIGN_RIGHT) {
w=get_size().width-mw;
}
if (w<0) {
w=0;
}
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
Ref<Texture> incr_hl = get_icon("increment_hilite");
Ref<Texture> decr_hl = get_icon("decrement_hilite");
int limit=get_size().width - incr->get_size().width - decr->get_size().width;
missing_right=false;
for(int i=0;i<tabs.size();i++) {
if (i<offset)
continue;
tabs[i].ofs_cache=w;
int lsize = get_tab_width(i);
String text = tabs[i].text;
int slen = font->get_string_size(text).width;
if (w+lsize > limit) {
max_drawn_tab=i-1;
missing_right=true;
break;
} else {
max_drawn_tab=i;
}
Ref<StyleBox> sb;
Color col;
if (i==current) {
sb=tab_fg;
col=color_fg;
} else {
sb=tab_bg;
col=color_bg;
}
Rect2 sb_rect = Rect2(w, 0, lsize, h);
sb->draw(ci, sb_rect);
w+=sb->get_margin(MARGIN_LEFT);
Size2i sb_ms = sb->get_minimum_size();
Ref<Texture> icon = tabs[i].icon;
if (icon.is_valid()) {
icon->draw(ci, Point2i( w, sb->get_margin(MARGIN_TOP)+((sb_rect.size.y-sb_ms.y)-icon->get_height())/2 ) );
if (text!="")
w+=icon->get_width()+get_constant("hseparation");
}
font->draw(ci, Point2i( w, sb->get_margin(MARGIN_TOP)+((sb_rect.size.y-sb_ms.y)-font->get_height())/2+font->get_ascent() ), text, col );
w+=slen;
if (tabs[i].right_button.is_valid()) {
Ref<StyleBox> style = get_stylebox("button");
Ref<Texture> rb=tabs[i].right_button;
w+=get_constant("hseparation");
Rect2 rb_rect;
rb_rect.size=style->get_minimum_size()+rb->get_size();
rb_rect.pos.x=w;
rb_rect.pos.y=sb->get_margin(MARGIN_TOP)+((sb_rect.size.y-sb_ms.y)-(rb_rect.size.y))/2;
if (rb_hover==i) {
if (rb_pressing)
get_stylebox("button_pressed")->draw(ci,rb_rect);
else
style->draw(ci,rb_rect);
}
rb->draw(ci,Point2i( w+style->get_margin(MARGIN_LEFT), rb_rect.pos.y+style->get_margin(MARGIN_TOP) ));
w+=rb->get_width();
tabs[i].rb_rect=rb_rect;
}
if (cb_displaypolicy==CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy==CLOSE_BUTTON_SHOW_ACTIVE_ONLY && i==current)) {
Ref<StyleBox> style = get_stylebox("button");
Ref<Texture> cb=close;
w+=get_constant("hseparation");
Rect2 cb_rect;
cb_rect.size=style->get_minimum_size()+cb->get_size();
cb_rect.pos.x=w;
cb_rect.pos.y=sb->get_margin(MARGIN_TOP)+((sb_rect.size.y-sb_ms.y)-(cb_rect.size.y))/2;
if (cb_hover==i) {
if (cb_pressing)
get_stylebox("button_pressed")->draw(ci,cb_rect);
else
style->draw(ci,cb_rect);
}
cb->draw(ci,Point2i( w+style->get_margin(MARGIN_LEFT), cb_rect.pos.y+style->get_margin(MARGIN_TOP) ));
w+=cb->get_width();
tabs[i].cb_rect=cb_rect;
}
w+=sb->get_margin(MARGIN_RIGHT);
tabs[i].size_cache=w-tabs[i].ofs_cache;
}
if (offset>0 || missing_right) {
int vofs = (get_size().height-incr->get_size().height)/2;
if (offset>0)
draw_texture(hilite_arrow==0 ? decr_hl : decr, Point2(limit,vofs));
else
draw_texture(decr,Point2(limit,vofs), Color(1,1,1,0.5));
if (missing_right)
draw_texture(hilite_arrow==1 ? incr_hl : incr, Point2(limit+decr->get_size().width,vofs));
else
draw_texture(incr,Point2(limit+decr->get_size().width,vofs), Color(1,1,1,0.5));
buttons_visible=true;
} else {
buttons_visible=false;
}
} break;
}
}
int Tabs::get_tab_count() const {
return tabs.size();
}
void Tabs::set_current_tab(int p_current) {
ERR_FAIL_INDEX( p_current, get_tab_count() );
current=p_current;
_change_notify("current_tab");
update();
}
int Tabs::get_current_tab() const {
return current;
}
void Tabs::set_tab_title(int p_tab,const String& p_title) {
ERR_FAIL_INDEX(p_tab,tabs.size());
tabs[p_tab].text=p_title;
update();
minimum_size_changed();
}
String Tabs::get_tab_title(int p_tab) const{
ERR_FAIL_INDEX_V(p_tab,tabs.size(),"");
return tabs[p_tab].text;
}
void Tabs::set_tab_icon(int p_tab,const Ref<Texture>& p_icon){
ERR_FAIL_INDEX(p_tab,tabs.size());
tabs[p_tab].icon=p_icon;
update();
minimum_size_changed();
}
Ref<Texture> Tabs::get_tab_icon(int p_tab) const{
ERR_FAIL_INDEX_V(p_tab,tabs.size(),Ref<Texture>());
return tabs[p_tab].icon;
}
void Tabs::set_tab_right_button(int p_tab,const Ref<Texture>& p_right_button){
ERR_FAIL_INDEX(p_tab,tabs.size());
tabs[p_tab].right_button=p_right_button;
update();
minimum_size_changed();
}
Ref<Texture> Tabs::get_tab_right_button(int p_tab) const{
ERR_FAIL_INDEX_V(p_tab,tabs.size(),Ref<Texture>());
return tabs[p_tab].right_button;
}
void Tabs::add_tab(const String& p_str,const Ref<Texture>& p_icon) {
Tab t;
t.text=p_str;
t.icon=p_icon;
tabs.push_back(t);
update();
minimum_size_changed();
}
void Tabs::clear_tabs() {
tabs.clear();
current=0;
update();
}
void Tabs::remove_tab(int p_idx) {
ERR_FAIL_INDEX(p_idx,tabs.size());
tabs.remove(p_idx);
if (current>=p_idx)
current--;
update();
minimum_size_changed();
if (current<0)
current=0;
if (current>=tabs.size())
current=tabs.size()-1;
_ensure_no_over_offset();
}
void Tabs::set_tab_align(TabAlign p_align) {
tab_align=p_align;
update();
}
Tabs::TabAlign Tabs::get_tab_align() const {
return tab_align;
}
int Tabs::get_tab_width(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx,tabs.size(),0);
Ref<StyleBox> tab_bg = get_stylebox("tab_bg");
Ref<StyleBox> tab_fg = get_stylebox("tab_fg");
Ref<Font> font = get_font("font");
int x=0;
Ref<Texture> tex = tabs[p_idx].icon;
if (tex.is_valid()) {
x+=tex->get_width();
if (tabs[p_idx].text!="")
x+=get_constant("hseparation");
}
x+=font->get_string_size(tabs[p_idx].text).width;
if (current==p_idx)
x+=tab_fg->get_minimum_size().width;
else
x+=tab_bg->get_minimum_size().width;
if (tabs[p_idx].right_button.is_valid()) {
Ref<Texture> rb=tabs[p_idx].right_button;
x+=rb->get_width();
x+=get_constant("hseparation");
}
if (cb_displaypolicy==CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy==CLOSE_BUTTON_SHOW_ACTIVE_ONLY && p_idx==current)) {
Ref<Texture> cb=get_icon("close");
x+=cb->get_width();
x+=get_constant("hseparation");
}
return x;
}
void Tabs::_ensure_no_over_offset() {
if (!is_inside_tree())
return;
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
int limit=get_size().width-incr->get_width()-decr->get_width();
while(offset>0) {
int total_w=0;
for(int i=0;i<tabs.size();i++) {
if (i<offset-1)
continue;
total_w+=get_tab_width(i);
}
if (total_w < limit) {
offset--;
update();
} else {
break;
}
}
}
void Tabs::ensure_tab_visible(int p_idx) {
if (!is_inside_tree())
return;
ERR_FAIL_INDEX(p_idx,tabs.size());
_ensure_no_over_offset();
if (p_idx<=offset) {
offset=p_idx;
update();
return;
}
Ref<Texture> incr = get_icon("increment");
Ref<Texture> decr = get_icon("decrement");
int limit=get_size().width-incr->get_width()-decr->get_width();
int x=0;
for(int i=0;i<tabs.size();i++) {
if (i<offset)
continue;
int sz = get_tab_width(i);
tabs[i].x_cache=x;
tabs[i].x_size_cache=sz;
x+=sz;
}
while(offset<tabs.size() && ( (tabs[p_idx].x_cache + tabs[p_idx].x_size_cache) - tabs[offset].x_cache) > limit) {
offset++;
}
update();
}
void Tabs::set_tab_close_display_policy(CloseButtonDisplayPolicy p_policy) {
cb_displaypolicy=p_policy;
update();
}
void Tabs::_bind_methods() {
ObjectTypeDB::bind_method(_MD("_input_event"),&Tabs::_input_event);
ObjectTypeDB::bind_method(_MD("get_tab_count"),&Tabs::get_tab_count);
ObjectTypeDB::bind_method(_MD("set_current_tab","tab_idx"),&Tabs::set_current_tab);
ObjectTypeDB::bind_method(_MD("get_current_tab"),&Tabs::get_current_tab);
ObjectTypeDB::bind_method(_MD("set_tab_title","tab_idx","title"),&Tabs::set_tab_title);
ObjectTypeDB::bind_method(_MD("get_tab_title","tab_idx"),&Tabs::get_tab_title);
ObjectTypeDB::bind_method(_MD("set_tab_icon","tab_idx","icon:Texture"),&Tabs::set_tab_icon);
ObjectTypeDB::bind_method(_MD("get_tab_icon:Texture","tab_idx"),&Tabs::get_tab_icon);
ObjectTypeDB::bind_method(_MD("remove_tab","tab_idx"),&Tabs::remove_tab);
ObjectTypeDB::bind_method(_MD("add_tab","title","icon:Texture"),&Tabs::add_tab);
ObjectTypeDB::bind_method(_MD("set_tab_align","align"),&Tabs::set_tab_align);
ObjectTypeDB::bind_method(_MD("get_tab_align"),&Tabs::get_tab_align);
ObjectTypeDB::bind_method(_MD("ensure_tab_visible","idx"),&Tabs::ensure_tab_visible);
ADD_SIGNAL(MethodInfo("tab_changed",PropertyInfo(Variant::INT,"tab")));
ADD_SIGNAL(MethodInfo("right_button_pressed",PropertyInfo(Variant::INT,"tab")));
ADD_SIGNAL(MethodInfo("tab_close",PropertyInfo(Variant::INT,"tab")));
ADD_PROPERTY( PropertyInfo(Variant::INT, "current_tab", PROPERTY_HINT_RANGE,"-1,4096,1",PROPERTY_USAGE_EDITOR), _SCS("set_current_tab"), _SCS("get_current_tab") );
BIND_CONSTANT( ALIGN_LEFT );
BIND_CONSTANT( ALIGN_CENTER );
BIND_CONSTANT( ALIGN_RIGHT );
BIND_CONSTANT( CLOSE_BUTTON_SHOW_ACTIVE_ONLY );
BIND_CONSTANT( CLOSE_BUTTON_SHOW_ALWAYS );
BIND_CONSTANT( CLOSE_BUTTON_SHOW_NEVER );
}
Tabs::Tabs() {
current=0;
tab_align=ALIGN_CENTER;
rb_hover=-1;
rb_pressing=false;
hilite_arrow=-1;
cb_hover=-1;
cb_pressing=false;
cb_displaypolicy = CLOSE_BUTTON_SHOW_NEVER;
offset=0;
max_drawn_tab=0;
}