nuclear@22: #include <stdio.h>
nuclear@22: #include <stdarg.h>
nuclear@22: #include <alloca.h>
nuclear@22: #include "game.h"
nuclear@22: #include "text.h"
nuclear@22: #include "sdr.h"
nuclear@22: #include "opengl.h"
nuclear@22: #include "sanegl.h"
nuclear@22: #include "drawtext/drawtext.h"
nuclear@22: 
nuclear@22: #define FONT_NAME	"consolas_s24.glyphmap"
nuclear@22: #define FONT_SIZE	24
nuclear@22: 
nuclear@22: static struct dtx_font *font;
nuclear@22: static unsigned int prog;
nuclear@22: static int uloc_color = -1;
nuclear@22: static int aloc_vertex, aloc_texcoords;
nuclear@22: static float color[4];
nuclear@22: static int cpos[2];
nuclear@22: static int line_height;
nuclear@22: 
nuclear@22: static int init(void)
nuclear@22: {
nuclear@22: 	if(font) return 0;	/* already initialized */
nuclear@22: 
nuclear@22: 	if(!(font = dtx_open_font_glyphmap("data/" FONT_NAME))) {
nuclear@22: 		fprintf(stderr, "failed to open font\n");
nuclear@22: 		return -1;
nuclear@22: 	}
nuclear@22: 	line_height = dtx_line_height();
nuclear@22: 
nuclear@22: 	if(!(prog = create_program_load("sdr/vertex.glsl", "sdr/font.p.glsl"))) {
nuclear@22: 		dtx_close_font(font);
nuclear@22: 		font = 0;
nuclear@22: 		return -1;
nuclear@22: 	}
nuclear@22: 	aloc_vertex = glGetAttribLocation(prog, "attr_vertex");
nuclear@22: 	aloc_texcoords = glGetAttribLocation(prog, "attr_texcoord");
nuclear@22: 	uloc_color = glGetUniformLocation(prog, "color");
nuclear@22: 
nuclear@22: 	return 0;
nuclear@22: }
nuclear@22: 
nuclear@22: void text_color(float r, float g, float b, float a)
nuclear@22: {
nuclear@22: 	color[0] = r;
nuclear@22: 	color[1] = g;
nuclear@22: 	color[2] = b;
nuclear@22: 	color[3] = a;
nuclear@22: }
nuclear@22: 
nuclear@22: void text_position(int x, int y)
nuclear@22: {
nuclear@22: 	cpos[0] = x;
nuclear@22: 	cpos[1] = y;
nuclear@22: }
nuclear@22: 
nuclear@22: static int pre_print(void)
nuclear@22: {
nuclear@22: 	int top = win_height - line_height;
nuclear@22: 
nuclear@22: 	if(init() == -1) {
nuclear@22: 		return -1;
nuclear@22: 	}
nuclear@22: 
nuclear@22: 	gl_matrix_mode(GL_TEXTURE);
nuclear@22: 	gl_push_matrix();
nuclear@22: 	gl_load_identity();
nuclear@22: 	gl_matrix_mode(GL_PROJECTION);
nuclear@22: 	gl_push_matrix();
nuclear@22: 	gl_load_identity();
nuclear@22: 	gl_ortho(0, win_width, 0, win_height, -1, 1);
nuclear@22: 	gl_matrix_mode(GL_MODELVIEW);
nuclear@22: 	gl_push_matrix();
nuclear@22: 	gl_load_identity();
nuclear@22: 	gl_translatef(cpos[0] * dtx_glyph_width(' '), top - cpos[1] * line_height, 0);
nuclear@22: 
nuclear@22: 	glUseProgram(prog);
nuclear@22: 	glUniform4fv(uloc_color, 1, color);
nuclear@22: 
nuclear@22: 	gl_apply_xform(prog);
nuclear@22: 
nuclear@22: 	dtx_use_font(font, FONT_SIZE);
nuclear@22: 	dtx_vertex_attribs(aloc_vertex, aloc_texcoords);
nuclear@22: 	return 0;
nuclear@22: }
nuclear@22: 
nuclear@22: static void post_print(void)
nuclear@22: {
nuclear@22: 	gl_matrix_mode(GL_TEXTURE);
nuclear@22: 	gl_pop_matrix();
nuclear@22: 	gl_matrix_mode(GL_PROJECTION);
nuclear@22: 	gl_pop_matrix();
nuclear@22: 	gl_matrix_mode(GL_MODELVIEW);
nuclear@22: 	gl_pop_matrix();
nuclear@22: }
nuclear@22: 
nuclear@22: void text_print(const char *s)
nuclear@22: {
nuclear@22: 	if(pre_print() == -1) {
nuclear@22: 		return;
nuclear@22: 	}
nuclear@22: 
nuclear@22: 	dtx_string(s);
nuclear@22: 
nuclear@22: 	post_print();
nuclear@22: }
nuclear@22: 
nuclear@22: void text_printf(const char *fmt, ...)
nuclear@22: {
nuclear@22: 	va_list ap;
nuclear@22: 	int buf_size;
nuclear@22: 	char *buf, tmp;
nuclear@22: 
nuclear@22: 	if(pre_print() == -1) {
nuclear@22: 		return;
nuclear@22: 	}
nuclear@22: 
nuclear@22: 	va_start(ap, fmt);
nuclear@22: 	buf_size = vsnprintf(&tmp, 0, fmt, ap);
nuclear@22: 	va_end(ap);
nuclear@22: 
nuclear@22: 	if(buf_size == -1) {
nuclear@22: 		buf_size = 512;
nuclear@22: 	}
nuclear@22: 
nuclear@22: 	buf = alloca(buf_size + 1);
nuclear@22: 	va_start(ap, fmt);
nuclear@22: 	vsnprintf(buf, buf_size + 1, fmt, ap);
nuclear@22: 	va_end(ap);
nuclear@22: 
nuclear@22: 	dtx_string(buf);
nuclear@22: 
nuclear@22: 	post_print();
nuclear@22: }