src/view.h

   1 #ifndef __VIEW_H
   2 #define __VIEW_H
   3
   4 #ifdef WANT_WIDGETS
   5 /* The growing buffers data types */
   6 typedef struct {
   7     unsigned char *data;
   8     int  present;               /* Unused, for DOS port maybe */
   9 } block_ptr_t;
  10
  11 enum ViewSide {
  12     view_side_left,
  13     view_side_right
  14 };
  15
  16 typedef struct {
  17     Widget widget;
  18
  19     char *filename;             /* Name of the file */
  20     char *command;              /* Command used to pipe data in */
  21     char *localcopy;
  22     int view_active;
  23     int have_frame;
  24
  25     unsigned char *data;        /* Memory area for the file to be viewed */
  26
  27     /* File information */
  28     int file;                   /* File descriptor (for mmap and munmap) */
  29     FILE *stdfile;              /* Stdio struct for reading file in parts */
  30     int reading_pipe;           /* Flag: Reading from pipe(use popen/pclose) */
  31     unsigned long bytes_read;   /* How much of file is read */
  32     int mmapping;               /* Did we use mmap on the file? */
  33
  34     /* Display information */
  35     unsigned long last;         /* Last byte shown */
  36     unsigned long last_byte;    /* Last byte of file */
  37     long first;                 /* First byte in file */
  38     long bottom_first;  /* First byte shown when very last page is displayed */
  39                                 /* For the case of WINCH we should reset it to -1 */
  40     unsigned long start_display;/* First char displayed */
  41     int  start_col;             /* First displayed column, negative */
  42     unsigned long edit_cursor;  /* HexEdit cursor position in file */
  43     char hexedit_mode;          /* Hexidecimal editing mode flag */
  44     char nib_shift;             /* A flag for inserting nibbles into bytes */
  45     enum ViewSide view_side;    /* A flag for the active editing panel */
  46     int  file_dirty;            /* Number of changes */
  47     int  start_save;            /* Line start shift between Ascii and Hex */
  48     int  cursor_col;            /* Cursor column */
  49     int  cursor_row;            /* Cursor row */
  50     struct hexedit_change_node *change_list;   /* Linked list of changes */
  51
  52     int dirty;                  /* Number of skipped updates */
  53     int wrap_mode;              /* wrap_mode */
  54
  55     /* Mode variables */
  56     int hex_mode;               /* Hexadecimal mode flag */
  57     int bytes_per_line;         /* Number of bytes per line in hex mode */
  58     int viewer_magic_flag;      /* Selected viewer */
  59     int viewer_nroff_flag;      /* Do we do nroff style highlighting? */
  60
  61     /* Growing buffers information */
  62     int growing_buffer;         /* Use the growing buffers? */
  63     block_ptr_t *block_ptr;     /* Pointer to the block pointers */
  64     int          blocks;        /* The number of blocks in *block_ptr */
  65
  66
  67     /* Search variables */
  68     int search_start;           /* First character to start searching from */
  69     int found_len;              /* Length of found string or 0 if none was found */
  70     char *search_exp;           /* The search expression */
  71     int  direction;             /* 1= forward; -1 backward */
  72     void (*last_search)(void *, char *);
  73                                 /* Pointer to the last search command */
  74     int view_quit;              /* Quit flag */
  75
  76     int monitor;                /* Monitor file growth (like tail -f) */
  77     /* Markers */
  78     int marker;                 /* mark to use */
  79     int marks [10];             /* 10 marks: 0..9 */
  80
  81
  82 #ifdef HAVE_GNOME
  83     int  current_x, current_y;  /* Current x,y position */
  84     int  color;                 /* Current color */
  85     void *gtk_fname;            /* filename widget */
  86     void *gtk_offset;           /* offset widget */
  87     void *gtk_bytes;            /* bytes */
  88     void *gtk_flags;            /* flags (growing) */
  89     void *gtk_percent;          /* percent */
  90     void *sadj;                 /* scrollbar adjustment */
  91 #endif
  92
  93     int  move_dir;              /* return value from widget:
  94                                  * 0 do nothing
  95                                  * -1 view previous file
  96                                  * 1 view next file
  97                                  */
  98     struct stat s;              /* stat for file */
  99 } WView;
 100
 101 #define vwidth (view->widget.cols - (view->have_frame ? 2 : 0))
 102 #define vheight (view->widget.lines - (view->have_frame ? 2 : 0))
 103
 104 /* Creation/initialization of a new view widget */
 105 WView *view_new (int y, int x, int cols, int lines, int is_panel);
 106 int view_init (WView *view, char *_command, char *_file, int start_line);
 107 void view_update_bytes_per_line(WView *view);
 108 int view_file (char *filename, int normal, int internal);
 109
 110 /* Internal view routines */
 111 void view_status        (WView *, gboolean update_gui);
 112 void view_percent       (WView *, int p, int w, gboolean update_gui);
 113 void view_update        (WView *view, gboolean update_gui);
 114 void view_labels        (WView *view);
 115 int view_event          (WView *view, Gpm_Event *event,int *result);
 116 void toggle_wrap_mode   (WView *);
 117 void toggle_hex_mode    (WView *);
 118 void goto_line          (WView *);
 119 void regexp_search_cmd  (WView *);
 120 void normal_search_cmd  (WView *);
 121 void continue_search    (WView *);
 122 void change_nroff       (WView *view);
 123 void set_monitor        (WView *view, int set_on);
 124 void view_move_forward  (WView *view, int i);
 125 void view_move_backward (WView *view, int i);
 126 void view_add_one_vline (void);
 127 #endif
 128
 129 /* Command: view a file, if _command != NULL we use popen on _command */
 130 /* move direction should be apointer that will hold the direction in which the user */
 131 /* wants to move (-1 previous file, 1 next file, 0 do nothing) */
 132 int view (char *_command, char *_file, int *move_direction, int start_line);
 133
 134 extern int mouse_move_pages_viewer;
 135 extern int max_dirt_limit;
 136 extern int global_wrap_mode;
 137 extern int have_fast_cpu;
 138 extern int default_hex_mode;
 139 extern int default_magic_flag;
 140 extern int default_nroff_flag;
 141 extern int altered_hex_mode;
 142 extern int altered_magic_flag;
 143 extern int altered_nroff_flag;
 144
 145 void view_adjust_size (Dlg_head *);
 146
 147 /* A node for building a change list on change_list */
 148 struct hexedit_change_node {
 149    struct hexedit_change_node *next;
 150    long                       offset;
 151    unsigned char              value;
 152 };
 153
 154 #ifdef HAVE_TK
 155 #define DEF_COLOR         0
 156 #define BOLD_COLOR        1
 157 #define UNDERLINE_COLOR   2
 158 #define MARK_COLOR        3
 159 #endif
 160
 161 #ifdef HAVE_X
 162 #ifdef WANT_WIDGETS
 163 void view_add_character (WView *view, int c);
 164 void view_add_string    (WView *view, char *s);
 165 void view_gotoyx        (WView *view, int r, int c);
 166 void view_set_color     (WView *view, int font);
 167 void view_display_clean (WView *view, int h, int w);
 168
 169 void x_destroy_view     (WView *);
 170 void x_create_viewer    (WView *);
 171 void x_focus_view       (WView *);
 172 void x_init_view        (WView *);
 173
 174 #ifdef PORT_HAS_VIEW_FREEZE
 175 void view_freeze (WView *view);
 176 void view_thaw (WView *view);
 177 #endif
 178
 179 #endif
 180 #else
 181 #    define x_init_view(x)
 182 #    define x_destroy_view(x)
 183 #    define x_create_viewer(x)
 184 #    define x_focus_view(x)
 185 #endif
 186
 187 #endif  /* __VIEW_H */