move font stuff into a file
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243de4a4fb
commit
ebdf327f66
4 changed files with 86 additions and 41 deletions
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@ -1,11 +1,10 @@
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#ifndef DEMO_ANIMATION_HPP
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#define DEMO_ANIMATION_HPP 1
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#include <GL4D/gl4dh.h>
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#include <GL4D/gl4duw_SDL2.h>
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#include <SDL_ttf.h>
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#include "audio.h"
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#include "font.h"
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// Dimensions de la fenêtre
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extern GLuint _dims[];
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21
includes/font.h
Normal file
21
includes/font.h
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#ifndef DEMO_FONT_HPP
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#define DEMO_FONT_HPP 1
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#include <GL4D/gl4dh.h>
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#include <SDL_ttf.h>
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/* Charge une police
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* Renvoie 1 en cas de problème d'initialisation
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* Renvoie 2 en cas de problème de chargement de la police
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* Renvoie 0 en cas de succès */
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int initFont(TTF_Font **, char *, int);
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/* Ecris un texte sur une texture
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* Renvoie 1 en cas de problème d'écriture sur la surface
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* Renvoie 0 en cas de succès */
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int writeText(GLuint *, TTF_Font *, char *, SDL_Color);
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// Libère une police de la mémoire
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void freeFont(TTF_Font *);
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#endif
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@ -30,50 +30,25 @@ static void init(void) {
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gl4duGenMatrix(GL_FLOAT, "proj");
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_quadId = gl4dgGenQuadf();
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// Font
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char *text = " CRÉDITS\n\n"
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"Concours API8 — 7e édition\n"
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"Font: fontesk et fontsquirrel\n"
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"Audio: beepbox\n"
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"Librairies: GL4D, SDL2 et extensions";
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char *fontName = "fonts/Instrument.ttf";
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SDL_Color c = {255, 255, 255, 255};
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SDL_Surface *d, *s;
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// Charge la police
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TTF_Font *font = NULL;
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if (TTF_Init() == -1) {
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fprintf(stderr, "Erreur TTF : %s\n", TTF_GetError());
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exit(3);
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if (initFont(&font, "fonts/Instrument.ttf", 100)) {
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exit(1);
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}
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glGenTextures(1, &_textTexId);
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glBindTexture(GL_TEXTURE_2D, _textTexId);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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if (!(font = TTF_OpenFont(fontName, 100))) {
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fprintf(stderr, "Erreur TTF : %s\n", TTF_GetError());
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exit(3);
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// Ecrit avec la police sur une texture
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if (writeText(&_textTexId, font,
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" CRÉDITS\n\n"
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"Concours API8 — 7e édition\n"
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"Font: fontesk et fontsquirrel\n"
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"Audio: beepbox\n"
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"Librairies: GL4D, SDL2 et extensions",
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(SDL_Color){255, 255, 255, 255})) {
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exit(1);
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}
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if ((d = TTF_RenderUTF8_Blended_Wrapped(font, text, c, 0)) == NULL) {
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TTF_CloseFont(font);
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fprintf(stderr, "Erreur TTF : TTF_RenderUTF8_Blended_Wrapped\n");
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exit(3);
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}
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assert((s = SDL_CreateRGBSurface(0, d->w, d->h, 32, R_MASK, G_MASK, B_MASK,
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A_MASK)));
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SDL_BlitSurface(d, NULL, s, NULL);
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SDL_FreeSurface(d);
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glBindTexture(GL_TEXTURE_2D, _textTexId);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, s->w, s->h, 0, GL_RGBA,
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GL_UNSIGNED_BYTE, s->pixels);
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SDL_FreeSurface(s);
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TTF_CloseFont(font);
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glBindTexture(GL_TEXTURE_2D, 0);
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// Libère la police de la mémoire
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freeFont(font);
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}
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static void draw(void) {
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50
src/font.c
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50
src/font.c
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#include "../includes/font.h"
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#include "SDL_ttf.h"
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int initFont(TTF_Font **font, char *filename, int size) {
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if (TTF_Init() == -1) {
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fprintf(stderr, "Erreur TTF : %s\n", TTF_GetError());
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return 1;
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}
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if (!(*font = TTF_OpenFont(filename, size))) {
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fprintf(stderr, "Erreur TTF : %s\n", TTF_GetError());
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return 2;
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}
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return 0;
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}
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int writeText(GLuint *_textTexId, TTF_Font *font, char *text, SDL_Color color) {
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glGenTextures(1, _textTexId);
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glBindTexture(GL_TEXTURE_2D, *_textTexId);
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glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
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SDL_Surface *d, *s;
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if ((d = TTF_RenderUTF8_Blended_Wrapped(font, text, color, 0)) == NULL) {
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freeFont(font);
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fprintf(stderr, "Erreur TTF : TTF_RenderUTF8_Blended_Wrapped\n");
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return 1;
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}
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assert((s = SDL_CreateRGBSurface(0, d->w, d->h, 32, R_MASK, G_MASK, B_MASK,
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A_MASK)));
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SDL_BlitSurface(d, NULL, s, NULL);
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SDL_FreeSurface(d);
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glBindTexture(GL_TEXTURE_2D, *_textTexId);
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glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, s->w, s->h, 0, GL_RGBA,
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GL_UNSIGNED_BYTE, s->pixels);
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SDL_FreeSurface(s);
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glBindTexture(GL_TEXTURE_2D, 0);
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return 0;
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}
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void freeFont(TTF_Font *font) {
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if (font) {
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TTF_CloseFont(font);
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font = NULL;
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}
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}
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