godot/scene/gui/tabs.cpp

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/*************************************************************************/
/* tabs.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
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/* */
/* 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() );
// h+=MIN( get_constant("label_valign_fg"), get_constant("label_valign_bg") );
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;
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if (tabs[i].right_button.is_valid()) {
Ref<Texture> rb=tabs[i].right_button;
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Size2 bms = rb->get_size();//+get_stylebox("button")->get_minimum_size();
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bms.width+=get_constant("hseparation");
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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");
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Size2 bms = cb->get_size();//+get_stylebox("button")->get_minimum_size();
bms.width+=get_constant("hseparation");
ms.width+=bms.width;
ms.height=MAX(bms.height+tab_bg->get_minimum_size().height,ms.height);
}
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}
ms.width=0; //should make this optional
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return ms;
}
void Tabs::_input_event(const InputEvent& p_event) {
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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;
}
}
int hover_buttons=-1;
hover=-1;
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for(int i=0;i<tabs.size();i++) {
// test hovering tab to display close button if policy says so
// test hovering right button and close button
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if (tabs[i].rb_rect.has_point(pos)) {
rb_hover=i;
cb_hover=-1;
hover_buttons = i;
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break;
}
else if (tabs[i].cb_rect.has_point(pos)) {
cb_hover=i;
rb_hover=-1;
hover_buttons = i;
break;
}
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}
if (hover_buttons == -1) { // no hover
rb_hover= hover_buttons;
cb_hover= hover_buttons;
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}
update();
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return;
}
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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();
}
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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;
}
}
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int found=-1;
for(int i=0;i<tabs.size();i++) {
if (i<offset)
continue;
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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;
}
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int ofs=tabs[i].ofs_cache;
int size = tabs[i].ofs_cache;
if (pos.x >=tabs[i].ofs_cache && pos.x<tabs[i].ofs_cache+tabs[i].size_cache) {
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found=i;
break;
}
}
if (found!=-1) {
set_current_tab(found);
emit_signal("tab_changed",found);
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}
}
}
void Tabs::_notification(int p_what) {
switch(p_what) {
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case NOTIFICATION_MOUSE_EXIT: {
rb_hover=-1;
cb_hover=-1;
hover=-1;
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update();
} break;
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case NOTIFICATION_RESIZED: {
_ensure_no_over_offset();
} break;
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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");
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int h = get_size().height;
int label_valign_fg = get_constant("label_valign_fg");
int label_valign_bg = get_constant("label_valign_bg");
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int w=0;
int mw = 0;
{
// h+=MIN( get_constant("label_valign_fg"), get_constant("label_valign_bg") );
for(int i=0;i<tabs.size();i++) {
int sz = get_tab_width(i);
tabs[i].ofs_cache=mw;
mw+=sz;
}
}
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;
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for(int i=0;i<tabs.size();i++) {
if (i<offset)
continue;
tabs[i].ofs_cache=w;
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int lsize = get_tab_width(i);
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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;
}
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Ref<StyleBox> sb;
int va;
Color col;
if (i==current) {
sb=tab_fg;
va=label_valign_fg;
col=color_fg;
} else {
sb=tab_bg;
va=label_valign_bg;
col=color_bg;
}
Rect2 sb_rect = Rect2(w, 0, lsize, h);
sb->draw(ci, sb_rect);
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w+=sb->get_margin(MARGIN_LEFT);
Size2i sb_ms = sb->get_minimum_size();
Ref<Texture> icon = tabs[i].icon;
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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!="")
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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 );
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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);
}
w+=style->get_margin(MARGIN_LEFT);
rb->draw(ci,Point2i( w,rb_rect.pos.y+style->get_margin(MARGIN_TOP) ));
w+=rb->get_width();
w+=style->get_margin(MARGIN_RIGHT);
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);
}
//w+=style->get_margin(MARGIN_LEFT);
cb->draw(ci,Point2i( w,cb_rect.pos.y+style->get_margin(MARGIN_TOP) ));
w+=cb->get_width();
//w+=style->get_margin(MARGIN_RIGHT);
tabs[i].cb_rect=cb_rect;
}
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w+=sb->get_margin(MARGIN_RIGHT);
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tabs[i].size_cache=w-tabs[i].ofs_cache;
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}
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;
}
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} 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() );
//printf("DEBUG %p: set_current_tab to %i\n", this, p_current);
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current=p_current;
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_change_notify("current_tab");
//emit_signal("tab_changed",current);
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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;
}
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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;
}
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void Tabs::add_tab(const String& p_str,const Ref<Texture>& p_icon) {
Tab t;
t.text=p_str;
t.icon=p_icon;
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tabs.push_back(t);
update();
minimum_size_changed();
}
void Tabs::clear_tabs() {
tabs.clear();
current=0;
update();
}
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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;
//emit_signal("tab_changed",current);
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_ensure_no_over_offset();
}
void Tabs::set_tab_align(TabAlign p_align) {
tab_align=p_align;
update();
}
Tabs::TabAlign Tabs::get_tab_align() const {
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return tab_align;
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}
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");
Ref<Texture> close=get_icon("close");
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;
Size2 bms = rb->get_size();//+get_stylebox("button")->get_minimum_size();
bms.width+=get_constant("hseparation");
x+=bms.width;
}
if (cb_displaypolicy==CLOSE_BUTTON_SHOW_ALWAYS || (cb_displaypolicy==CLOSE_BUTTON_SHOW_ACTIVE_ONLY && p_idx==current)) {
Size2 bms = close->get_size();//+get_stylebox("button")->get_minimum_size();
bms.width+=get_constant("hseparation");
x+=bms.width;
}
return x;
}
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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());
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_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();
}
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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);
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ADD_SIGNAL(MethodInfo("tab_changed",PropertyInfo(Variant::INT,"tab")));
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ADD_SIGNAL(MethodInfo("right_button_pressed",PropertyInfo(Variant::INT,"tab")));
ADD_SIGNAL(MethodInfo("tab_close",PropertyInfo(Variant::INT,"tab")));
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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 );
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}
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Tabs::Tabs() {
current=0;
tab_align=ALIGN_CENTER;
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rb_hover=-1;
rb_pressing=false;
hilite_arrow=-1;
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cb_hover=-1;
cb_pressing=false;
cb_displaypolicy = CLOSE_BUTTON_SHOW_NEVER; // Default : no close button
offset=0;
max_drawn_tab=0;
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}