godot/scene/gui/tabs.cpp

294 lines
7.5 KiB
C++

/*************************************************************************/
/* tabs.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2014 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() );
// 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;
}
return ms;
}
void Tabs::_input_event(const InputEvent& p_event) {
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 );
int found=-1;
for(int i=0;i<tabs.size();i++) {
int ofs=tabs[i].ofs_cache;
if (pos.x < ofs) {
found=i;
break;
}
}
if (found!=-1) {
set_current_tab(found);
}
}
}
void Tabs::_notification(int p_what) {
switch(p_what) {
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");
int h = get_size().height;
int label_valign_fg = get_constant("label_valign_fg");
int label_valign_bg = get_constant("label_valign_bg");
int w=0;
for(int i=0;i<tabs.size();i++) {
String s = tabs[i].text;
int lsize=0;
int slen=font->get_string_size(s).width;;
lsize+=slen;
Ref<Texture> icon;
if (tabs[i].icon.is_valid()) {
Ref<Texture> icon = tabs[i].icon;
if (icon.is_valid()) {
lsize+=icon->get_width();
if (s!="")
lsize+=get_constant("hseparation");
}
}
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;
}
Size2i sb_ms = sb->get_minimum_size();
Rect2 sb_rect = Rect2( w, 0, lsize+sb_ms.width, h);
sb->draw(ci, sb_rect );
w+=sb->get_margin(MARGIN_LEFT);
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 (s!="")
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() ), s, col );
w+=slen+sb->get_margin(MARGIN_RIGHT);
tabs[i].ofs_cache=w;
}
} 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);
current=p_current;
_change_notify("current_tab");
emit_signal("tab_changed",current);
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::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::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);
}
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","icon:Texture"),&Tabs::remove_tab);
ADD_SIGNAL(MethodInfo("tab_changed",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") );
}
Tabs::Tabs() {
current=0;
}