libmenu/menu_txt.c

   1
   2 #include "config.h"
   3
   4 #include <stdlib.h>
   5 #include <stdio.h>
   6 #include <string.h>
   7
   8 #include "img_format.h"
   9 #include "mp_image.h"
  10
  11 #include "m_struct.h"
  12 #include "m_option.h"
  13 #include "menu.h"
  14
  15 #include "libvo/font_load.h"
  16 #include "osdep/keycodes.h"
  17
  18 struct menu_priv_s {
  19   char** lines;
  20   int num_lines;
  21   int cur_line;
  22   int disp_lines;
  23   int minb;
  24   int hspace;
  25   char* file;
  26 };
  27
  28 static struct menu_priv_s cfg_dflt = {
  29   NULL,
  30   0,
  31   0,
  32   0,
  33   0,
  34   3,
  35   NULL
  36 };
  37
  38 #define ST_OFF(m) M_ST_OFF(struct menu_priv_s,m)
  39
  40 static m_option_t cfg_fields[] = {
  41   { "minbor", ST_OFF(minb), CONF_TYPE_INT, M_OPT_MIN, 0, 0, NULL },
  42   { "hspace", ST_OFF(hspace), CONF_TYPE_INT, M_OPT_MIN, 0, 0, NULL },
  43   { "file", ST_OFF(file), CONF_TYPE_STRING, 0, 0, 0, NULL },
  44   { NULL, NULL, NULL, 0,0,0,NULL }
  45 };
  46
  47 #define mpriv (menu->priv)
  48
  49 static void read_cmd(menu_t* menu,int cmd) {
  50   switch(cmd) {
  51   case MENU_CMD_UP:
  52     mpriv->cur_line -= mpriv->disp_lines / 2;
  53     if(mpriv->cur_line < 0)
  54       mpriv->cur_line = 0;
  55     break;
  56   case MENU_CMD_DOWN:
  57   case MENU_CMD_OK:
  58     mpriv->cur_line += mpriv->disp_lines / 2;
  59     if(mpriv->cur_line >= mpriv->num_lines)
  60       mpriv->cur_line = mpriv->num_lines - 1;
  61     break;
  62   case MENU_CMD_CANCEL:
  63     menu->show = 0;
  64     menu->cl = 1;
  65     break;
  66   }
  67 }
  68
  69 static void read_key(menu_t* menu,int c) {
  70   switch (c) {
  71   case KEY_HOME:
  72     mpriv->cur_line = 0;
  73     break;
  74   case KEY_END:
  75     mpriv->cur_line = mpriv->num_lines - 1;
  76     break;
  77   case KEY_PAGE_UP:
  78     mpriv->cur_line =  mpriv->cur_line > mpriv->disp_lines ?
  79       mpriv->cur_line - mpriv->disp_lines : 0;
  80     break;
  81   case KEY_PAGE_DOWN:
  82     mpriv->cur_line = mpriv->cur_line + mpriv->disp_lines > mpriv->num_lines - 1 ? mpriv->num_lines - 1 : mpriv->cur_line + mpriv->disp_lines;
  83     break;
  84   default:
  85     menu_dflt_read_key(menu,c);
  86   }
  87 }
  88
  89
  90 static void draw(menu_t* menu,mp_image_t* mpi) {
  91   int x = mpriv->minb;
  92   int y = mpriv->minb;
  93   //int th = 2*mpriv->hspace + vo_font->height;
  94   int i,end;
  95
  96   if(x < 0) x = 8;
  97   if(y < 0) y = 8;
  98
  99   mpriv->disp_lines = (mpi->h + mpriv->hspace  - 2*mpriv->minb) / (  vo_font->height + mpriv->hspace);
 100   if(mpriv->num_lines - mpriv->cur_line < mpriv->disp_lines) {
 101     i = mpriv->num_lines - 1 - mpriv->disp_lines;
 102     if(i < 0) i = 0;
 103     end = mpriv->num_lines - 1;
 104   } else {
 105     i = mpriv->cur_line;
 106     end = i + mpriv->disp_lines;
 107     if(end >= mpriv->num_lines) end = mpriv->num_lines - 1;
 108   }
 109
 110   for( ; i < end ; i++) {
 111     menu_draw_text(mpi,mpriv->lines[i],x,y);
 112     y += vo_font->height + mpriv->hspace;
 113   }
 114
 115 }
 116
 117 #define BUF_SIZE 1024
 118
 119 static int open(menu_t* menu, char* args) {
 120   FILE* fd;
 121   char buf[BUF_SIZE];
 122   char *l;
 123   int s;
 124   int pos = 0, r = 0;
 125   args = NULL; // Warning kill
 126
 127   menu->draw = draw;
 128   menu->read_cmd = read_cmd;
 129   menu->read_key = read_key;
 130
 131   if(!mpriv->file) {
 132     printf("Menu txt need a txt file name (param file)\n");
 133     return 0;
 134   }
 135
 136   fd = fopen(mpriv->file,"r");
 137   if(!fd) {
 138     printf("Menu txt can't open: %s\n",mpriv->file);
 139     return 0;
 140   }
 141
 142   while(1) {
 143     r = fread(buf+pos,1,BUF_SIZE-pos-1,fd);
 144     if(r <= 0) {
 145       if(pos > 0) {
 146         mpriv->lines = realloc(mpriv->lines,(mpriv->num_lines + 1)*sizeof(char*));
 147         mpriv->lines[mpriv->num_lines] = strdup(buf);
 148         mpriv->num_lines++;
 149       }
 150       fclose(fd);
 151       break;
 152     }
 153     pos += r;
 154     buf[pos] = '\0';
 155
 156     while((l = strchr(buf,'\n')) != NULL) {
 157       s = l-buf;
 158       mpriv->lines = realloc(mpriv->lines,(mpriv->num_lines + 1)*sizeof(char*));
 159       mpriv->lines[mpriv->num_lines] = malloc(s+1);
 160       memcpy(mpriv->lines[mpriv->num_lines],buf,s);
 161       mpriv->lines[mpriv->num_lines][s] = '\0';
 162       pos -= s + 1;
 163       if(pos > 0)
 164         memmove(buf,l+1,pos);
 165       buf[pos] = '\0';
 166       mpriv->num_lines++;
 167     }
 168     if(pos >= BUF_SIZE-1) {
 169       printf("Warning too long line, splitting it\n");
 170       mpriv->lines = realloc(mpriv->lines,(mpriv->num_lines + 1)*sizeof(char*));
 171       mpriv->lines[mpriv->num_lines] = strdup(buf);
 172       mpriv->num_lines++;
 173       pos = 0;
 174     }
 175   }
 176
 177   printf("Parsed %d lines\n",mpriv->num_lines);
 178
 179   return 1;
 180 }
 181
 182 const menu_info_t menu_info_txt = {
 183   "Text file viewer",
 184   "txt",
 185   "Albeu",
 186   "",
 187   {
 188     "txt_cfg",
 189     sizeof(struct menu_priv_s),
 190     &cfg_dflt,
 191     cfg_fields
 192   },
 193   open,
 194 };