nuclear@1: /* Simple libdrawtext example.
nuclear@1:  *
nuclear@1:  * Important parts are marked with XXX comments.
nuclear@1:  */
nuclear@1: #include <stdio.h>
nuclear@1: #include <stdlib.h>
nuclear@1: 
nuclear@1: #ifndef __APPLE__
nuclear@1: #include <GL/glut.h>
nuclear@1: #else
nuclear@1: #include <GLUT/glut.h>
nuclear@1: #endif
nuclear@1: 
nuclear@1: #include "drawtext.h"
nuclear@1: 
nuclear@1: void disp(void);
nuclear@1: void reshape(int x, int y);
nuclear@1: void keyb(unsigned char key, int x, int y);
nuclear@1: 
nuclear@1: /* XXX fonts are represented by the opaque struct dtx_font type, so you
nuclear@1:  * need to create at least one with dtx_open_font (see main).
nuclear@1:  */
nuclear@1: struct dtx_font *font;
nuclear@1: 
nuclear@1: int main(int argc, char **argv)
nuclear@1: {
nuclear@1: 	glutInit(&argc, argv);
nuclear@1: 	glutInitWindowSize(512, 384);
nuclear@1: 	glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
nuclear@1: 	glutCreateWindow("libdrawtext example: simple");
nuclear@1: 
nuclear@1: 	glutDisplayFunc(disp);
nuclear@1: 	glutReshapeFunc(reshape);
nuclear@1: 	glutKeyboardFunc(keyb);
nuclear@1: 
nuclear@1: 	/* XXX dtx_open_font opens a font file and returns a pointer to dtx_font */
nuclear@1: 	if(!(font = dtx_open_font("serif.ttf", 24))) {
nuclear@1: 		fprintf(stderr, "failed to open font\n");
nuclear@1: 		return 1;
nuclear@1: 	}
nuclear@1: 	/* XXX select the font and size to render with by calling dtx_use_font
nuclear@1: 	 * if you want to use a different font size, you must first call:
nuclear@1: 	 * dtx_prepare(font, size) once.
nuclear@1: 	 */
nuclear@1: 	dtx_use_font(font, 24);
nuclear@1: 
nuclear@1: 	glutMainLoop();
nuclear@1: 	return 0;
nuclear@1: }
nuclear@1: 
nuclear@1: const char *text = "Some sample text goes here.\n"
nuclear@1: 	"Yada yada yada, more text...\n"
nuclear@1: 	"foobar xyzzy\n";
nuclear@1: 
nuclear@1: void disp(void)
nuclear@1: {
nuclear@1: 	glClear(GL_COLOR_BUFFER_BIT);
nuclear@1: 
nuclear@1: 	glMatrixMode(GL_MODELVIEW);
nuclear@1: 	glLoadIdentity();
nuclear@1: 
nuclear@1: 	glPushMatrix();
nuclear@1: 	glTranslatef(-200, 150, 0);
nuclear@1: 	glColor3f(1, 1, 1);
nuclear@1: 	/* XXX call dtx_string to draw utf-8 text.
nuclear@1: 	 * any transformations and the current color apply
nuclear@1: 	 */
nuclear@1: 	dtx_string(text);
nuclear@1: 	glPopMatrix();
nuclear@1: 
nuclear@1: 	glPushMatrix();
nuclear@1: 	glTranslatef(-200, 50, 0);
nuclear@1: 	glScalef(2, 0.7, 1);
nuclear@1: 	glColor3f(0.6, 0.7, 1.0);
nuclear@1: 	dtx_string(text);
nuclear@1: 	glPopMatrix();
nuclear@1: 
nuclear@1: 	glPushMatrix();
nuclear@1: 	glTranslatef(-80, -90, 0);
nuclear@1: 	glRotatef(20, 0, 0, 1);
nuclear@1: 	glColor3f(1.0, 0.7, 0.6);
nuclear@1: 	dtx_string(text);
nuclear@1: 	glPopMatrix();
nuclear@1: 
nuclear@1: 	glutSwapBuffers();
nuclear@1: }
nuclear@1: 
nuclear@1: void reshape(int x, int y)
nuclear@1: {
nuclear@1: 	glViewport(0, 0, x, y);
nuclear@1: 
nuclear@1: 	glMatrixMode(GL_PROJECTION);
nuclear@1: 	glLoadIdentity();
nuclear@1: 	glOrtho(-x/2, x/2, -y/2, y/2, -1, 1);
nuclear@1: }
nuclear@1: 
nuclear@1: void keyb(unsigned char key, int x, int y)
nuclear@1: {
nuclear@1: 	if(key == 27) {
nuclear@1: 		exit(0);
nuclear@1: 	}
nuclear@1: }