nuclear@6: /*
nuclear@6: GoatKit - a themable/animated widget toolkit for games
nuclear@6: Copyright (C) 2014  John Tsiombikas <nuclear@member.fsf.org>
nuclear@6: 
nuclear@6: This program is free software: you can redistribute it and/or modify
nuclear@6: it under the terms of the GNU Lesser General Public License as published by
nuclear@6: the Free Software Foundation, either version 3 of the License, or
nuclear@6: (at your option) any later version.
nuclear@6: 
nuclear@6: This program is distributed in the hope that it will be useful,
nuclear@6: but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@6: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nuclear@6: GNU Lesser General Public License for more details.
nuclear@6: 
nuclear@6: You should have received a copy of the GNU Lesser General Public License
nuclear@6: along with this program.  If not, see <http://www.gnu.org/licenses/>.
nuclear@6: */
nuclear@6: #include <ctype.h>
nuclear@6: #include <limits.h>
nuclear@6: #include <string>
nuclear@6: #include "textbox.h"
nuclear@6: 
nuclear@6: namespace goatkit {
nuclear@6: 
nuclear@6: struct TextBoxImpl {
nuclear@6: 	std::string text;
nuclear@6: 	int cursor;
nuclear@6: };
nuclear@6: 
nuclear@6: TextBox::TextBox()
nuclear@6: {
nuclear@6: 	tbox = new TextBoxImpl;
nuclear@6: 	tbox->cursor = 0;
nuclear@6: }
nuclear@6: 
nuclear@6: TextBox::~TextBox()
nuclear@6: {
nuclear@6: 	delete tbox;
nuclear@6: }
nuclear@6: 
nuclear@6: const char *TextBox::get_type_name() const
nuclear@6: {
nuclear@6: 	return "textbox";
nuclear@6: }
nuclear@6: 
nuclear@6: bool TextBox::can_focus() const
nuclear@6: {
nuclear@6: 	return true;
nuclear@6: }
nuclear@6: 
nuclear@6: void TextBox::clear()
nuclear@6: {
nuclear@6: 	tbox->text.clear();
nuclear@6: }
nuclear@6: 
nuclear@6: void TextBox::set_text(const char *t)
nuclear@6: {
nuclear@6: 	tbox->text = std::string(t);
nuclear@6: }
nuclear@6: 
nuclear@6: const char *TextBox::get_text() const
nuclear@6: {
nuclear@6: 	return tbox->text.c_str();
nuclear@6: }
nuclear@6: 
nuclear@6: int TextBox::set_cursor(int idx)
nuclear@6: {
nuclear@6: 	int len = tbox->text.size();
nuclear@6: 
nuclear@6: 	if(idx < 0) {
nuclear@6: 		tbox->cursor = 0;
nuclear@6: 	} else if(idx > len) {
nuclear@6: 		tbox->cursor = len;
nuclear@6: 	} else {
nuclear@6: 		tbox->cursor = idx;
nuclear@6: 	}
nuclear@6: 	return tbox->cursor;
nuclear@6: }
nuclear@6: 
nuclear@6: int TextBox::get_cursor() const
nuclear@6: {
nuclear@6: 	return tbox->cursor;
nuclear@6: }
nuclear@6: 
nuclear@6: int TextBox::cursor_begin()
nuclear@6: {
nuclear@6: 	return tbox->cursor = 0;
nuclear@6: }
nuclear@6: 
nuclear@6: int TextBox::cursor_end()
nuclear@6: {
nuclear@6: 	return set_cursor(INT_MAX);
nuclear@6: }
nuclear@6: 
nuclear@6: int TextBox::cursor_prev()
nuclear@6: {
nuclear@6: 	return set_cursor(tbox->cursor - 1);
nuclear@6: }
nuclear@6: 
nuclear@6: int TextBox::cursor_next()
nuclear@6: {
nuclear@6: 	return set_cursor(tbox->cursor + 1);
nuclear@6: }
nuclear@6: 
nuclear@6: void TextBox::insert(char c)
nuclear@6: {
nuclear@6: 	int len = tbox->text.size();
nuclear@6: 	if(tbox->cursor >= len) {
nuclear@6: 		tbox->text.push_back(c);
nuclear@6: 		tbox->cursor++;
nuclear@6: 	} else {
nuclear@6: 		tbox->text.insert(tbox->cursor++, 1, c);
nuclear@6: 	}
nuclear@6: }
nuclear@6: 
nuclear@6: void TextBox::on_key(const KeyEvent &ev)
nuclear@6: {
nuclear@6: 	if(!ev.press) return;	// ignore key release events
nuclear@6: 
nuclear@6: 	switch(ev.key) {
nuclear@6: 	case KEY_LEFT:
nuclear@6: 		cursor_prev();
nuclear@6: 		break;
nuclear@6: 
nuclear@6: 	case KEY_RIGHT:
nuclear@6: 		cursor_next();
nuclear@6: 		break;
nuclear@6: 
nuclear@6: 	case KEY_HOME:
nuclear@6: 		cursor_begin();
nuclear@6: 		break;
nuclear@6: 
nuclear@6: 	case KEY_END:
nuclear@6: 		cursor_end();
nuclear@6: 		break;
nuclear@6: 
nuclear@6: 	case KEY_DELETE:
nuclear@6: 		tbox->text.erase(tbox->cursor, 1);
nuclear@6: 		break;
nuclear@6: 
nuclear@6: 	case '\b':
nuclear@6: 		if(tbox->cursor > 0) {
nuclear@6: 			tbox->text.erase(--tbox->cursor, 1);
nuclear@6: 		}
nuclear@6: 		break;
nuclear@6: 
nuclear@6: 	case '\n':
nuclear@6: 	case '\t':
nuclear@6: 		{
nuclear@6: 			Event ev;
nuclear@6: 			ev.type = EV_CHANGE;
nuclear@6: 			handle_event(ev);
nuclear@6: 		}
nuclear@6: 		break;
nuclear@6: 
nuclear@6: 	default:
nuclear@6: 		if(isprint(ev.key)) {
nuclear@6: 			insert(ev.key);
nuclear@6: 		}
nuclear@6: 	}
nuclear@6: }
nuclear@6: 
nuclear@6: void TextBox::on_click()
nuclear@6: {
nuclear@6: 	// TODO place cursor
nuclear@6: }
nuclear@6: 
nuclear@6: }	// namespace goatkit