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| //MENU.C
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include "menu.h"
//structure image
typedef struct {
unsigned char R;
unsigned char G;
unsigned char B;
unsigned char A;
}pixel_t;
typedef struct {
int h;
int w;
pixel_t* pixel;
}image;
//exemple de fonction load_image que je veux implémenté dans le menu ouvrir
image* load_image(){
char fname[100];
printf("Entrez le nom complet de l'image à ouvrir svp: ");
scanf("%s", fname);
image* im = malloc (sizeof(image));
FILE* fichier = NULL;
fichier = fopen(fname, "r");
if(fichier == NULL){
fprintf(stderr, "Imposible d'ouvrir le fichier %s\n", fname);
exit(EXIT_FAILURE);
}
return im;
}
menu* createMenu(const char* text){
menu* m = (menu*) malloc(sizeof(menu));
m->parent = NULL;
m->nom = malloc(strlen(text + 1) * sizeof(char));
strcpy(m->nom, text);
m->nbItem = 0;
return m;
}
void addMenuAction(menu* m, const char* text, void (*f)()){
m->items[m->nbItem].Kind = Action_kind;
m->items[m->nbItem].Union.Action.nom = malloc(strlen(text + 1) * sizeof(char));
strcpy(m->items[m->nbItem].Union.Action.nom, text);
m->items[m->nbItem].Union.Action.f = f;
m->nbItem++;
}
void addSubMenu(menu* m, menu* sm){
if(sm->parent == NULL){
sm->parent = m;
m->items[m->nbItem].Kind = SubMenu_kind;
m->items[m->nbItem].Union.SubMenu = sm;
m->nbItem++;
}
}
void deleteMenu(menu* m) {
if(m->parent == NULL) free(m);
}
void viderBuffer(){
int c = 0;
while(c != '\n' && c != EOF) c = getchar();
}
void launchMenu(menu* m){
int i, cn;
bool p = false;
char c;
printf("%s\n\n", m->nom);
for(i = 1; i <= m->nbItem; i++){
switch(m->items[i-1].Kind){
case SubMenu_kind:
printf("%d - %s\n\n", i, m->items[i-1].Union.SubMenu->nom);
break;
case Action_kind:
printf("%d - %s\n\n", i, m->items[i-1].Union.Action.nom);
break;
}
}
do {
printf("Choice ?");
c = getchar();
cn = (int)c;
if(cn == 112){
p = true;
cn = 1;
}else cn -= 48;
viderBuffer();
}while(cn > m->nbItem || cn < 1);
cn--;
if(p && m->parent != NULL) {
system("clear");
launchMenu(m->parent);
}else if (cn > -1 && !p) {
switch(m->items[cn].Kind){
case Action_kind:
system("clear");
m->items[cn].Union.Action.f();
break;
case SubMenu_kind:
system("clear");
launchMenu(m->items[cn].Union.SubMenu);
break;
}
} else {
system("clear");
}
}
bool cont = true;
void quit() {
printf("Au revoir, fermeture du programme.\n");
cont = false;
}
int main() {
menu* m;
menu* sm;
m = createMenu("Menu principal");
sm = createMenu("Fichier");
addSubMenu(m, sm);
addMenuAction(sm,"Ouvrir", load_image);
//erreur de compilation car la fonction attend un void (*f)
//alors que moi j'ai besoin d'un return, et comment recupérer le return?
while(cont) launchMenu(m);
deleteMenu(m);
return EXIT_SUCCESS;
} |
