nuclear@16: /*
nuclear@16: curvedraw - a simple program to draw curves
nuclear@16: Copyright (C) 2015  John Tsiombikas <nuclear@member.fsf.org>
nuclear@16: 
nuclear@16: This program is free software: you can redistribute it and/or modify
nuclear@16: it under the terms of the GNU General Public License as published by
nuclear@16: the Free Software Foundation, either version 3 of the License, or
nuclear@16: (at your option) any later version.
nuclear@16: 
nuclear@16: This program is distributed in the hope that it will be useful,
nuclear@16: but WITHOUT ANY WARRANTY; without even the implied warranty of
nuclear@16: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
nuclear@16: GNU General Public License for more details.
nuclear@16: 
nuclear@16: You should have received a copy of the GNU General Public License
nuclear@16: along with this program.  If not, see <http://www.gnu.org/licenses/>.
nuclear@16: */
nuclear@0: #include <stdio.h>
nuclear@0: #include <stdlib.h>
nuclear@0: #include <string.h>
nuclear@0: #include <stdarg.h>
nuclear@5: #ifdef _MSC_VER
nuclear@5: #include <malloc.h>
nuclear@5: #else
nuclear@5: #include <alloca.h>
nuclear@5: #endif
nuclear@0: #include <drawtext.h>
nuclear@0: #include "opengl.h"
nuclear@0: #include "widgets.h"
nuclear@0: 
nuclear@16: #define FONT_FILE	"data/droid_sans.ttf"
nuclear@16: #define FONT_SIZE	24
nuclear@16: 
nuclear@0: static dtx_font *font;
nuclear@0: 
nuclear@16: static bool init_font()
nuclear@0: {
nuclear@16: 	if(font) return true;
nuclear@0: 
nuclear@16: 	if(!(font = dtx_open_font(FONT_FILE, FONT_SIZE))) {
nuclear@16: 		static bool msg_printed;
nuclear@16: 		if(!msg_printed) {
nuclear@16: 			fprintf(stderr, "failed to load font %s\n", FONT_FILE);
nuclear@16: 			msg_printed = true;
nuclear@16: 		}
nuclear@16: 		return false;
nuclear@0: 	}
nuclear@16: 	return true;
nuclear@0: }
nuclear@0: 
nuclear@0: Widget::Widget()
nuclear@0: {
nuclear@0: 	text = 0;
nuclear@0: }
nuclear@0: 
nuclear@0: Widget::~Widget()
nuclear@0: {
nuclear@0: 	delete [] text;
nuclear@0: }
nuclear@0: 
nuclear@0: void Widget::set_position(const Vector2 &p)
nuclear@0: {
nuclear@0: 	pos = p;
nuclear@0: }
nuclear@0: 
nuclear@0: const Vector2 &Widget::get_position() const
nuclear@0: {
nuclear@0: 	return pos;
nuclear@0: }
nuclear@0: 
nuclear@0: void Widget::set_text(const char *str)
nuclear@0: {
nuclear@1: 	char *newtext = new char[strlen(str) + 1];
nuclear@1: 	strcpy(newtext, str);
nuclear@1: 
nuclear@1: 	delete [] text;
nuclear@1: 	text = newtext;
nuclear@0: }
nuclear@0: 
nuclear@0: void Widget::set_textf(const char *str, ...)
nuclear@0: {
nuclear@0: 	va_list ap;
nuclear@0: 	int sz = strlen(str) * 4;
nuclear@1: 	char *buf = (char*)alloca(sz + 1);
nuclear@0: 
nuclear@0: 	va_start(ap, str);
nuclear@1: 	vsnprintf(buf, sz, str, ap);
nuclear@0: 	va_end(ap);
nuclear@0: 
nuclear@0: 	set_text(buf);
nuclear@0: }
nuclear@0: 
nuclear@0: const char *Widget::get_text() const
nuclear@0: {
nuclear@0: 	return text;
nuclear@0: }
nuclear@0: 
nuclear@0: // ---- label ----
nuclear@0: 
nuclear@0: void Label::draw() const
nuclear@0: {
nuclear@16: 	if(!init_font()) return;
nuclear@0: 
nuclear@0: 	glMatrixMode(GL_MODELVIEW);
nuclear@0: 	glPushMatrix();
nuclear@0: 	glTranslatef(pos.x, pos.y, 0);
nuclear@1: 	glScalef(0.003, 0.003, 1);
nuclear@0: 
nuclear@1: 	glColor4f(1, 1, 1, 1);
nuclear@0: 	dtx_string(text);
nuclear@0: 	dtx_flush();
nuclear@0: 
nuclear@0: 	glPopMatrix();
nuclear@0: }