libdrawtext

annotate examples/nofreetype/simple-noft.c @ 74:838d473cf6cc

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- properly supported building of no-freetype version, separately installed as libdrawtext-noft.whatever - saving/loading glyphmaps now work correctly - added nofreetype program in examples, to illustrate how to use libdrawtext-noft with prebuilt glyphmaps (see tools/font2glyphmap)
author John Tsiombikas <nuclear@member.fsf.org>
date Tue, 15 Apr 2014 05:10:39 +0300
parents
children bc85a35d88d7
rev   line source
nuclear@22 1 /* Simple libdrawtext example without freetype.
nuclear@22 2 */
nuclear@22 3 #include <stdio.h>
nuclear@22 4 #include <stdlib.h>
nuclear@22 5
nuclear@22 6 #ifndef __APPLE__
nuclear@22 7 #include <GL/glut.h>
nuclear@22 8 #else
nuclear@22 9 #include <GLUT/glut.h>
nuclear@22 10 #endif
nuclear@22 11
nuclear@22 12 #include "drawtext.h"
nuclear@22 13
nuclear@22 14 void disp(void);
nuclear@22 15 void reshape(int x, int y);
nuclear@22 16 void keyb(unsigned char key, int x, int y);
nuclear@22 17
nuclear@22 18 struct dtx_font *font;
nuclear@22 19
nuclear@22 20 int main(int argc, char **argv)
nuclear@22 21 {
nuclear@22 22 glutInit(&argc, argv);
nuclear@22 23 glutInitWindowSize(512, 384);
nuclear@22 24 glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
nuclear@22 25 glutCreateWindow("libdrawtext example: simple");
nuclear@22 26
nuclear@22 27 glutDisplayFunc(disp);
nuclear@22 28 glutReshapeFunc(reshape);
nuclear@22 29 glutKeyboardFunc(keyb);
nuclear@22 30
nuclear@22 31 if(!(font = dtx_open_font_glyphmap("serif_s24.glyphmap"))) {
nuclear@22 32 fprintf(stderr, "failed to open font\n");
nuclear@22 33 return 1;
nuclear@22 34 }
nuclear@22 35 dtx_use_font(font, 24);
nuclear@22 36
nuclear@22 37 glutMainLoop();
nuclear@22 38 return 0;
nuclear@22 39 }
nuclear@22 40
nuclear@22 41 const char *text = "Some sample text goes here.\n"
nuclear@22 42 "Yada yada yada, more text...\n"
nuclear@22 43 "foobar xyzzy\n";
nuclear@22 44
nuclear@22 45 void disp(void)
nuclear@22 46 {
nuclear@22 47 glClear(GL_COLOR_BUFFER_BIT);
nuclear@22 48
nuclear@22 49 glMatrixMode(GL_MODELVIEW);
nuclear@22 50 glLoadIdentity();
nuclear@22 51
nuclear@22 52 glPushMatrix();
nuclear@22 53 glTranslatef(-200, 150, 0);
nuclear@22 54 glColor3f(1, 1, 1);
nuclear@22 55 /* XXX call dtx_string to draw utf-8 text.
nuclear@22 56 * any transformations and the current color apply
nuclear@22 57 */
nuclear@22 58 dtx_string(text);
nuclear@22 59 glPopMatrix();
nuclear@22 60
nuclear@22 61 glPushMatrix();
nuclear@22 62 glTranslatef(-200, 50, 0);
nuclear@22 63 glScalef(2, 0.7, 1);
nuclear@22 64 glColor3f(0.6, 0.7, 1.0);
nuclear@22 65 dtx_string(text);
nuclear@22 66 glPopMatrix();
nuclear@22 67
nuclear@22 68 glPushMatrix();
nuclear@22 69 glTranslatef(-80, -90, 0);
nuclear@22 70 glRotatef(20, 0, 0, 1);
nuclear@22 71 glColor3f(1.0, 0.7, 0.6);
nuclear@22 72 dtx_string(text);
nuclear@22 73 glPopMatrix();
nuclear@22 74
nuclear@22 75 glutSwapBuffers();
nuclear@22 76 }
nuclear@22 77
nuclear@22 78 void reshape(int x, int y)
nuclear@22 79 {
nuclear@22 80 glViewport(0, 0, x, y);
nuclear@22 81
nuclear@22 82 glMatrixMode(GL_PROJECTION);
nuclear@22 83 glLoadIdentity();
nuclear@22 84 glOrtho(-x/2, x/2, -y/2, y/2, -1, 1);
nuclear@22 85 }
nuclear@22 86
nuclear@22 87 void keyb(unsigned char key, int x, int y)
nuclear@22 88 {
nuclear@22 89 if(key == 27) {
nuclear@22 90 exit(0);
nuclear@22 91 }
nuclear@22 92 }