libmenu/menu_txt.c

   1
   2 #include "config.h"
   3 #include "mp_msg.h"
   4 #include "help_mp.h"
   5
   6 #include <stdlib.h>
   7 #include <stdio.h>
   8 #include <string.h>
   9
  10 #include "libmpcodecs/img_format.h"
  11 #include "libmpcodecs/mp_image.h"
  12
  13 #include "m_struct.h"
  14 #include "m_option.h"
  15 #include "menu.h"
  16
  17 #include "libvo/font_load.h"
  18 #include "osdep/keycodes.h"
  19
  20 struct menu_priv_s {
  21   char** lines;
  22   int num_lines;
  23   int cur_line;
  24   int disp_lines;
  25   int minb;
  26   int hspace;
  27   char* file;
  28 };
  29
  30 static struct menu_priv_s cfg_dflt = {
  31   NULL,
  32   0,
  33   0,
  34   0,
  35   0,
  36   3,
  37   NULL
  38 };
  39
  40 #define ST_OFF(m) M_ST_OFF(struct menu_priv_s,m)
  41
  42 static m_option_t cfg_fields[] = {
  43   { "minbor", ST_OFF(minb), CONF_TYPE_INT, M_OPT_MIN, 0, 0, NULL },
  44   { "hspace", ST_OFF(hspace), CONF_TYPE_INT, M_OPT_MIN, 0, 0, NULL },
  45   { "file", ST_OFF(file), CONF_TYPE_STRING, 0, 0, 0, NULL },
  46   { NULL, NULL, NULL, 0,0,0,NULL }
  47 };
  48
  49 #define mpriv (menu->priv)
  50
  51 static void read_cmd(menu_t* menu,int cmd) {
  52   switch(cmd) {
  53   case MENU_CMD_UP:
  54     mpriv->cur_line -= mpriv->disp_lines / 2;
  55     if(mpriv->cur_line < 0)
  56       mpriv->cur_line = 0;
  57     break;
  58   case MENU_CMD_DOWN:
  59   case MENU_CMD_OK:
  60     mpriv->cur_line += mpriv->disp_lines / 2;
  61     if(mpriv->cur_line >= mpriv->num_lines)
  62       mpriv->cur_line = mpriv->num_lines - 1;
  63     break;
  64   case MENU_CMD_LEFT:
  65   case MENU_CMD_CANCEL:
  66     menu->show = 0;
  67     menu->cl = 1;
  68     break;
  69   }
  70 }
  71
  72 static void read_key(menu_t* menu,int c) {
  73   switch (c) {
  74   case KEY_HOME:
  75     mpriv->cur_line = 0;
  76     break;
  77   case KEY_END:
  78     mpriv->cur_line = mpriv->num_lines - 1;
  79     break;
  80   case KEY_PAGE_UP:
  81     mpriv->cur_line =  mpriv->cur_line > mpriv->disp_lines ?
  82       mpriv->cur_line - mpriv->disp_lines : 0;
  83     break;
  84   case KEY_PAGE_DOWN:
  85     mpriv->cur_line = mpriv->cur_line + mpriv->disp_lines > mpriv->num_lines - 1 ? mpriv->num_lines - 1 : mpriv->cur_line + mpriv->disp_lines;
  86     break;
  87   default:
  88     menu_dflt_read_key(menu,c);
  89   }
  90 }
  91
  92
  93 static void draw(menu_t* menu,mp_image_t* mpi) {
  94   int x = mpriv->minb;
  95   int y = mpriv->minb;
  96   //int th = 2*mpriv->hspace + vo_font->height;
  97   int i,end;
  98
  99   if(x < 0) x = 8;
 100   if(y < 0) y = 8;
 101
 102   mpriv->disp_lines = (mpi->h + mpriv->hspace  - 2*mpriv->minb) / (  vo_font->height + mpriv->hspace);
 103   if(mpriv->num_lines - mpriv->cur_line < mpriv->disp_lines) {
 104     i = mpriv->num_lines - 1 - mpriv->disp_lines;
 105     if(i < 0) i = 0;
 106     end = mpriv->num_lines - 1;
 107   } else {
 108     i = mpriv->cur_line;
 109     end = i + mpriv->disp_lines;
 110     if(end >= mpriv->num_lines) end = mpriv->num_lines - 1;
 111   }
 112
 113   for( ; i < end ; i++) {
 114     menu_draw_text(mpi,mpriv->lines[i],x,y);
 115     y += vo_font->height + mpriv->hspace;
 116   }
 117
 118 }
 119
 120 #define BUF_SIZE 1024
 121
 122 static int open_txt(menu_t* menu, char* args) {
 123   FILE* fd;
 124   char buf[BUF_SIZE];
 125   char *l;
 126   int s;
 127   int pos = 0, r = 0;
 128   args = NULL; // Warning kill
 129
 130   menu->draw = draw;
 131   menu->read_cmd = read_cmd;
 132   menu->read_key = read_key;
 133
 134   if(!mpriv->file) {
 135     mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_MenuTxtNeedATxtFileName);
 136     return 0;
 137   }
 138
 139   fd = fopen(mpriv->file,"r");
 140   if(!fd) {
 141     mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_MenuTxtCantOpen,mpriv->file);
 142     return 0;
 143   }
 144
 145   while(1) {
 146     r = fread(buf+pos,1,BUF_SIZE-pos-1,fd);
 147     if(r <= 0) {
 148       if(pos > 0) {
 149         mpriv->lines = realloc(mpriv->lines,(mpriv->num_lines + 1)*sizeof(char*));
 150         mpriv->lines[mpriv->num_lines] = strdup(buf);
 151         mpriv->num_lines++;
 152       }
 153       fclose(fd);
 154       break;
 155     }
 156     pos += r;
 157     buf[pos] = '\0';
 158
 159     while((l = strchr(buf,'\n')) != NULL) {
 160       s = l-buf;
 161       mpriv->lines = realloc(mpriv->lines,(mpriv->num_lines + 1)*sizeof(char*));
 162       mpriv->lines[mpriv->num_lines] = malloc(s+1);
 163       memcpy(mpriv->lines[mpriv->num_lines],buf,s);
 164       mpriv->lines[mpriv->num_lines][s] = '\0';
 165       pos -= s + 1;
 166       if(pos > 0)
 167         memmove(buf,l+1,pos);
 168       buf[pos] = '\0';
 169       mpriv->num_lines++;
 170     }
 171     if(pos >= BUF_SIZE-1) {
 172       mp_msg(MSGT_GLOBAL,MSGL_WARN,MSGTR_LIBMENU_WarningTooLongLineSplitting);
 173       mpriv->lines = realloc(mpriv->lines,(mpriv->num_lines + 1)*sizeof(char*));
 174       mpriv->lines[mpriv->num_lines] = strdup(buf);
 175       mpriv->num_lines++;
 176       pos = 0;
 177     }
 178   }
 179
 180   mp_msg(MSGT_GLOBAL,MSGL_INFO,MSGTR_LIBMENU_ParsedLines,mpriv->num_lines);
 181
 182   return 1;
 183 }
 184
 185 const menu_info_t menu_info_txt = {
 186   "Text file viewer",
 187   "txt",
 188   "Albeu",
 189   "",
 190   {
 191     "txt_cfg",
 192     sizeof(struct menu_priv_s),
 193     &cfg_dflt,
 194     cfg_fields
 195   },
 196   open_txt,
 197 };