mc/src/dlg.h

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1998-02-27 07:54:42 +03:00
#ifndef MC_DLG_H
#define MC_DLG_H
#include "mouse.h"
#include "util.h"
/* Color constants */
#define FOCUSC h->color[1]
#define NORMALC h->color[0]
#define HOT_NORMALC h->color[2]
#define HOT_FOCUSC h->color[3]
/* Possible directions */
#define DIR_FORWARD 1
#define DIR_BACKWARD 0
/* Common return values */
#define B_EXIT 0
#define B_CANCEL 1
#define B_ENTER 2
#define B_HELP 3
#define B_USER 100
/* Widget messages */
enum {
WIDGET_INIT, /* Initialize widget */
WIDGET_FOCUS, /* Draw widget in focused state */
WIDGET_UNFOCUS, /* Draw widget in unfocused state */
WIDGET_DRAW, /* Sent to widget to draw themselves */
WIDGET_KEY, /* Sent to widgets on key press */
WIDGET_HOTKEY, /* Sent to widget to catch preprocess key */
WIDGET_DESTROY, /* Sent to widget at destruction time */
WIDGET_CURSOR, /* Sent to widget to position the cursor */
WIDGET_IDLE, /* Send to widgets with options & W_WANT_IDLE*/
WIDGET_USER = 0x100000
} /* Widget_Messages */;
enum {
MSG_NOT_HANDLED,
MSG_HANDLED
} /* WRET */;
/* Widgets are expected to answer to the following messages:
WIDGET_FOCUS: 1 if the accept the focus, 0 if they do not.
WIDGET_UNFOCUS: 1 if they accept to release the focus, 0 if they don't.
WIDGET_KEY: 1 if they actually used the key, 0 if not.
WIDGET_HOTKEY: 1 if they actually used the key, 0 if not.
*/
/* Dialog messages */
enum {
DLG_KEY, /* Sent on keypress before sending to widget */
DLG_INIT, /* Sent on init */
DLG_END, /* Sent on shutdown */
DLG_ACTION,
DLG_DRAW, /* Sent for updating dialog managed area */
DLG_FOCUS, /* Sent on give focus to a widget */
DLG_UNFOCUS, /* Sent on remove focus from widget */
DLG_ONE_UP, /* Sent on selecting next */
DLG_ONE_DOWN, /* Sent on selecting prev */
DLG_POST_KEY, /* Sent after key has been sent */
DLG_IDLE, /* Sent if idle is active */
DLG_UNHANDLED_KEY, /* Send if no widget wanted the key */
DLG_HOTKEY_HANDLED, /* Send if a child got the hotkey */
DLG_PRE_EVENT /* Send before calling get_event */
} /* Dialog_Messages */;
typedef unsigned long widget_data;
typedef struct Dlg_head {
int *color; /* color set */
int count; /* number of widgets */
int ret_value;
/* mouse status */
int mouse_status; /* For the autorepeat status of the mouse */
void *previous_dialog; /* Pointer to the previously running Dlg_head */
int refresh_pushed; /* Did the dialog actually run? */
/* position */
int x, y; /* Position relative to screen origin */
/* Flags */
int running;
int direction;
int send_idle_msg;
char *name; /* Dialog name Tk code */
char *help_ctx;
/* Internal variables */
struct Widget_Item *current, *first, *last;
int (*callback) (struct Dlg_head *, int, int);
struct Widget_Item *initfocus;
/* Hacks */
char *title;
int cols;
int lines;
void *data;
int has_menubar; /* GrossHack: Send events on row 1 to a menubar? */
int raw; /* Should the tab key be sent to the dialog? */
widget_data wdata;
int grided; /* Does it use the automatic layout? */
#ifdef HAVE_GNOME
int idle_fn_tag; /* Tag for the idle routine, -1 if none */
#endif
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} Dlg_head;
/* XView widget layout */
typedef enum {
XV_WLAY_DONTCARE, /* Place the widget wherever it is reasonable */
XV_WLAY_RIGHTOF, /* Place the widget to the right of the last widget
* created - note: add_widget creates widgets from
* the last to the first one.
*/
XV_WLAY_BELOWOF, /* Place it in a column like style */
XV_WLAY_BELOWCLOSE,/* The same, but without any gap between them */
XV_WLAY_NEXTROW, /* Place it on the left margin with Y bellow all the
* previous widgets
*/
XV_WLAY_CENTERROW,/* The same as previous, but when the dialog is
* ready to show, tries to center that row of widgets
*/
XV_WLAY_NEXTCOLUMN, /* Place it on the top margin with X behind all the
* previous widgets
*/
XV_WLAY_RIGHTDOWN, /* Place the widget to the right of the last one with
* y set so that both y + h and yold + hold are equal.
This is usefull if the previous widget was a radio,
which has multiple lines */
XV_WLAY_EXTENDWIDTH /* Like nextrow, but later on tries to extend the widget
* to fit in the frame (only for PANEL_LIST) */
} WLay;
/* Every Widget must have this as it's first element */
typedef struct Widget {
int x, y;
int cols, lines;
int color; /* If the widget uses it, the color */
int options;
int focused; /* Tells if the widget is focused */
int (*callback)(Dlg_head *, void *, int, int); /* The callback function */
void (*destroy)(void *);
mouse_h mouse;
struct Dlg_head *parent;
widget_data wdata;
widget_data wcontainer; /* For children of midnight_dlg, identifies
* the frame in which they should reside
*/
char *frame; /* Tk version: frame containing it */
char *tkname; /* Tk version: widget name */
enum {
AREA_TOP,
AREA_LEFT,
AREA_RIGHT,
AREA_BOTTOM
} area; /* Used by X platforms, should stay here always because the size
of this structure has to be same everywhere :) */
WLay layout;
} Widget;
/* The options for the widgets */
#define W_WANT_POST_KEY 1
#define W_WANT_HOTKEY 2
#define W_WANT_CURSOR 4
#define W_WANT_IDLE 8
#define W_IS_INPUT 16
typedef struct Widget_Item {
int dlg_id;
struct Widget_Item *next; /* next in circle buffer */
struct Widget_Item *prev; /* previous in circle buffer */
Widget *widget; /* point to the component */
} Widget_Item;
/* draw box in window */
void draw_box (Dlg_head *h, int y, int x, int ys, int xs);
/* doubled line if possible */
void draw_double_box (Dlg_head *h, int y, int x, int ys, int xs);
/* Creates a dialog head */
Dlg_head *create_dlg (int y1, int x1, int lines, int cols,
int *col,
int (*callback) (struct Dlg_head *, int, int),
char *help_ctx, char *name, int flags);
/* The flags: */
#define DLG_GNOME_APP 16 /* GNOME only: use a gnome-app for the toplevel window */
#define DLG_NO_TED 8 /* GNOME only: do not manage layout with a GNOME GtkTed widget */
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#define DLG_GRID 4 /* Widgets should be created under .widgets */
#define DLG_TRYUP 2 /* Try to move two lines up the dialog */
#define DLG_CENTER 1 /* Center the dialog */
#define DLG_NONE 0 /* No options */
int add_widget (Dlg_head *dest, void *Widget);
int add_widgetl (Dlg_head *dest, void *Widget, WLay layout);
/* Runs dialog d */
void run_dlg (Dlg_head *d);
void dlg_run_done (Dlg_head *h);
void dlg_process_event (Dlg_head *h, int key, Gpm_Event *event);
void init_dlg (Dlg_head *h);
/* To activate/deactivate the idle message generation */
void set_idle_proc (Dlg_head *d, int state);
void dlg_redraw (Dlg_head *h);
void dlg_refresh (void *parameter);
void destroy_dlg (Dlg_head *h);
void widget_set_size (Widget *widget, int x1, int y1, int x2, int y2);
void dlg_broadcast_msg_to (Dlg_head *h, int message, int reverse, int flags);
void dlg_broadcast_msg (Dlg_head *h, int message, int reverse);
void dlg_mouse (Dlg_head *h, Gpm_Event *event);
int default_dlg_callback (Dlg_head *h, int id, int msg);
typedef void (*destroy_fn)(void *);
typedef int (*callback_fn)(Dlg_head *, void *, int, int);
void init_widget (Widget *w, int y, int x, int lines, int cols,
callback_fn callback, destroy_fn destroy,
mouse_h mouse_handler, char *tkname);
int std_callback (Dlg_head *h, int Msg, int Par);
int default_proc (Dlg_head *h, int Msg, int Par);
/* Nay, it has to be elsewhere, this header if widely used
#ifdef HAVE_X
# ifndef move
# define move(a,b)
# endif
#endif
*/
#define real_widget_move(w, _y, _x) move((w)->y + _y, (w)->x + _x)
#define dlg_move(h, _y, _x) move(((Dlg_head *) h)->y + _y, \
((Dlg_head *) h)->x + _x)
#define widget_move(w,y,x) real_widget_move((Widget*)w,y,x)
extern Dlg_head *current_dlg;
extern Hook *idle_hook;
int send_message (Dlg_head *h, Widget *w, int msg, int par);
int send_message_to (Dlg_head *h, Widget *w, int msg, int par);
void dlg_replace_widget (Dlg_head *h, Widget *old, Widget *new);
void widget_redraw (Dlg_head *h, Widget_Item *w);
int dlg_overlap (Widget *a, Widget *b);
void widget_erase (Widget *);
void dlg_erase (Dlg_head *h);
void dlg_stop (Dlg_head *h);
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/* Widget selection */
int dlg_select_widget (struct Dlg_head *h, void *widget);
void dlg_one_up (Dlg_head *h);
void dlg_one_down (Dlg_head *h);
int dlg_focus (Dlg_head *h);
int dlg_unfocus (Dlg_head *h);
int dlg_select_nth_widget (Dlg_head *h, int n);
int dlg_item_number (Dlg_head *h);
Widget *find_widget_type (Dlg_head *h, callback_fn signature);
/* Sets/clear the specified flag in the options field */
#define widget_option(w,f,i) \
w.options = ((i) ? (w.options | (f)) : (w.options & (~(f))))
#define widget_want_cursor(w,i) widget_option(w, W_WANT_CURSOR, i)
#define widget_want_hotkey(w,i) widget_option(w, W_WANT_HOTKEY, i)
#define widget_want_postkey(w,i) widget_option(w, W_WANT_POSTKEY, i)
typedef void (*movefn)(void *, int);
/* Layout definitions */
void xv_Layout (void *first_widget, ...);
void tk_layout (void *first_widget, ...);
void tk_new_frame (Dlg_head *, char *);
void tk_frame (Dlg_head *, char *);
void tk_end_frame ();
void x_set_dialog_title (Dlg_head *h, char *title);
/* The inner workings of run_dlg, exported for the Tk and XView toolkits */
void dlg_key_event (Dlg_head *h, int d_key);
void update_cursor (Dlg_head *h);
#ifdef HAVE_X
extern Dlg_head *midnight_dlg;
void x_focus_widget (Widget_Item *p);
void x_unfocus_widget (Widget_Item *p);
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void x_init_dlg (Dlg_head *h);
void x_destroy_dlg (Dlg_head *h);
#else
# define x_focus_widget(x) {}
# define x_unfocus_widget(x) {}
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# define x_init_dlg(x) {}
# define x_destroy_dlg(x) {}
#endif
#endif /* MC_DLG_H */