nuclear@3: /* Unicode libdrawtext example.
nuclear@3:  *
nuclear@3:  * Important parts are marked with XXX comments.
nuclear@3:  */
nuclear@3: #include <stdio.h>
nuclear@3: #include <stdlib.h>
nuclear@3: 
nuclear@3: #ifndef __APPLE__
nuclear@3: #include <GL/glut.h>
nuclear@3: #else
nuclear@3: #include <GLUT/glut.h>
nuclear@3: #endif
nuclear@3: 
nuclear@3: #include "drawtext.h"
nuclear@3: 
nuclear@3: void disp(void);
nuclear@3: void reshape(int x, int y);
nuclear@3: void keyb(unsigned char key, int x, int y);
nuclear@3: 
nuclear@3: /* XXX fonts are represented by the opaque struct dtx_font type, so you
nuclear@3:  * need to create at least one with dtx_open_font (see main).
nuclear@3:  */
nuclear@3: struct dtx_font *freeserif, *klingon;
nuclear@3: 
nuclear@3: #define FONT_SIZE	24
nuclear@3: 
nuclear@3: int main(int argc, char **argv)
nuclear@3: {
nuclear@3: 	glutInit(&argc, argv);
nuclear@3: 	glutInitWindowSize(512, 384);
nuclear@3: 	glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
nuclear@3: 	glutCreateWindow("libdrawtext example: simple");
nuclear@3: 
nuclear@3: 	glutDisplayFunc(disp);
nuclear@3: 	glutReshapeFunc(reshape);
nuclear@3: 	glutKeyboardFunc(keyb);
nuclear@3: 
nuclear@3: 	/* XXX dtx_open_font opens a font file and returns a pointer to dtx_font */
nuclear@3: 	if(!(freeserif = dtx_open_font("serif.ttf", 0))) {
nuclear@3: 		return 1;
nuclear@3: 	}
nuclear@3: 	dtx_prepare_range(freeserif, FONT_SIZE, 0, 256);	/* prepare ASCII */
nuclear@3: 	dtx_prepare_range(freeserif, FONT_SIZE, 0x0370, 0x0400);	/* greek */
nuclear@3: 	dtx_prepare_range(freeserif, FONT_SIZE, 0x4e00, 0x9fc0);	/* kanji */
nuclear@3: 
nuclear@3: 	if(!(klingon = dtx_open_font("klingon.ttf", 0))) {
nuclear@3: 		return 1;
nuclear@3: 	}
nuclear@3: 	dtx_prepare_range(klingon, FONT_SIZE, 0xf8d0, 0xf900);
nuclear@3: 
nuclear@3: 	glutMainLoop();
nuclear@3: 	return 0;
nuclear@3: }
nuclear@3: 
nuclear@3: const char *ascii_text = "Hello world!";
nuclear@3: const char *greek_text = "\xce\x9a\xce\xbf\xcf\x8d\xcf\x81\xce\xb1\xcf\x83\xce\xb7";
nuclear@3: const char *kanji_text = "\xe4\xb9\x97\xe4\xba\xac";
nuclear@3: const char *klingon_text = "\xef\xa3\xa3\xef\xa3\x9d\xef\xa3\x93\xef\xa3\x98\xef\xa3\x9d\xef\xa3\xa2\xef\xa3\xa1\xef\xa3\x9d\xef\xa3\x99";
nuclear@3: 
nuclear@3: 
nuclear@3: void disp(void)
nuclear@3: {
nuclear@3: 	glClear(GL_COLOR_BUFFER_BIT);
nuclear@3: 
nuclear@3: 	glMatrixMode(GL_MODELVIEW);
nuclear@3: 	glLoadIdentity();
nuclear@3: 
nuclear@3: 	dtx_use_font(freeserif, FONT_SIZE);
nuclear@3: 
nuclear@3: 	glTranslatef(-200, 150, 0);
nuclear@3: 	/* XXX call dtx_string to draw utf-8 text.
nuclear@3: 	 * any transformations and the current color apply
nuclear@3: 	 */
nuclear@3: 	dtx_string(ascii_text);
nuclear@3: 
nuclear@3: 	glTranslatef(0, -40, 0);
nuclear@3: 	dtx_string(greek_text);
nuclear@3: 
nuclear@3: 	glTranslatef(0, -40, 0);
nuclear@3: 	dtx_string(kanji_text);
nuclear@3: 
nuclear@3: 	dtx_use_font(klingon, FONT_SIZE);
nuclear@3: 
nuclear@3: 	glTranslatef(0, -40, 0);
nuclear@3: 	dtx_string(klingon_text);
nuclear@3: 
nuclear@3: 	glutSwapBuffers();
nuclear@3: }
nuclear@3: 
nuclear@3: void reshape(int x, int y)
nuclear@3: {
nuclear@3: 	glViewport(0, 0, x, y);
nuclear@3: 
nuclear@3: 	glMatrixMode(GL_PROJECTION);
nuclear@3: 	glLoadIdentity();
nuclear@3: 	glOrtho(-x/2, x/2, -y/2, y/2, -1, 1);
nuclear@3: }
nuclear@3: 
nuclear@3: void keyb(unsigned char key, int x, int y)
nuclear@3: {
nuclear@3: 	if(key == 27) {
nuclear@3: 		exit(0);
nuclear@3: 	}
nuclear@3: }