6eda31f362
pointer for previous widget. The widget can be replaced in the meantime. * dlg.c (dlg_select_by_id): New function, essentially a cleaner implementation of dlg_select_nth_widget().
211 строки
6.7 KiB
C
211 строки
6.7 KiB
C
#ifndef MC_DLG_H
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#define MC_DLG_H
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#include "mouse.h"
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/* Color constants */
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#define FOCUSC h->color[1]
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#define NORMALC h->color[0]
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#define HOT_NORMALC h->color[2]
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#define HOT_FOCUSC h->color[3]
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/* Common return values */
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#define B_EXIT 0
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#define B_CANCEL 1
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#define B_ENTER 2
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#define B_HELP 3
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#define B_USER 100
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/* Widget messages */
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typedef enum {
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WIDGET_INIT, /* Initialize widget */
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WIDGET_FOCUS, /* Draw widget in focused state */
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WIDGET_UNFOCUS, /* Draw widget in unfocused state */
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WIDGET_DRAW, /* Sent to widget to draw themselves */
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WIDGET_KEY, /* Sent to widgets on key press */
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WIDGET_HOTKEY, /* Sent to widget to catch preprocess key */
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WIDGET_DESTROY, /* Sent to widget at destruction time */
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WIDGET_CURSOR, /* Sent to widget to position the cursor */
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WIDGET_IDLE, /* Send to widgets with options & W_WANT_IDLE*/
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} widget_msg_t;
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typedef enum {
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MSG_NOT_HANDLED,
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MSG_HANDLED
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} cb_ret_t;
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/* Widgets are expected to answer to the following messages:
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WIDGET_FOCUS: 1 if the accept the focus, 0 if they do not.
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WIDGET_UNFOCUS: 1 if they accept to release the focus, 0 if they don't.
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WIDGET_KEY: 1 if they actually used the key, 0 if not.
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WIDGET_HOTKEY: 1 if they actually used the key, 0 if not.
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*/
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/* Dialog messages */
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typedef enum {
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DLG_KEY, /* Key before sending to widget */
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DLG_INIT, /* Initialize dialog */
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DLG_END, /* Shut down dialog */
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DLG_ACTION, /* State of check- and radioboxes has changed */
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DLG_DRAW, /* Draw dialog on screen */
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DLG_FOCUS, /* A widget has got focus */
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DLG_UNFOCUS, /* A widget has been unfocused */
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DLG_RESIZE, /* Window size has changed */
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DLG_POST_KEY, /* The key has been handled */
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DLG_IDLE, /* The idle state is active */
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DLG_UNHANDLED_KEY, /* Key that no widget handled */
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DLG_HOTKEY_HANDLED, /* A widget has got the hotkey */
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DLG_VALIDATE /* Dialog is to be closed */
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} dlg_msg_t;
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/* Dialog callback */
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struct Dlg_head;
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typedef cb_ret_t (*dlg_cb_fn)(struct Dlg_head *h, dlg_msg_t msg, int parm);
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typedef struct Dlg_head {
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/* Set by the user */
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int flags; /* User flags */
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char *help_ctx; /* Name of the help entry */
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const int *color; /* Color set */
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char *title; /* Title of the dialog */
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/* Set and received by the user */
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int ret_value; /* Result of run_dlg() */
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/* Geometry */
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int x, y; /* Position relative to screen origin */
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int cols, lines; /* Width and height of the window */
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/* Internal flags */
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int running;
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int mouse_status; /* For the autorepeat status of the mouse */
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int refresh_pushed; /* Did the dialog actually run? */
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/* Internal variables */
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int count; /* Number of widgets */
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struct Widget *current; /* Curently active widget */
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dlg_cb_fn callback;
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void *previous_dialog; /* Pointer to the previously running Dlg_head */
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} Dlg_head;
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typedef struct Widget Widget;
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/* Widget callback */
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typedef cb_ret_t (*callback_fn) (Widget *widget, widget_msg_t msg, int parm);
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/* Every Widget must have this as it's first element */
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struct Widget {
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int x, y;
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int cols, lines;
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int options;
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int dlg_id; /* Number of the widget, starting with 0 */
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struct Widget *next;
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struct Widget *prev;
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callback_fn callback; /* The callback function */
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mouse_h mouse;
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struct Dlg_head *parent;
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};
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/* The options for the widgets */
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#define W_WANT_HOTKEY 2
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#define W_WANT_CURSOR 4
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#define W_WANT_IDLE 8
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#define W_IS_INPUT 16
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/* draw box in window */
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void draw_box (Dlg_head *h, int y, int x, int ys, int xs);
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/* doubled line if possible */
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void draw_double_box (Dlg_head *h, int y, int x, int ys, int xs);
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/* Creates a dialog head */
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Dlg_head *create_dlg (int y1, int x1, int lines, int cols,
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const int *color_set, dlg_cb_fn callback,
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char *help_ctx, const char *title, int flags);
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/* The flags: */
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#define DLG_REVERSE 32 /* Tab order is opposite to the add order */
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#define DLG_WANT_TAB 16 /* Should the tab key be sent to the dialog? */
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#define DLG_WANT_IDLE 8 /* Dialog wants idle events */
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#define DLG_COMPACT 4 /* Suppress spaces around the frame */
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#define DLG_TRYUP 2 /* Try to move two lines up the dialog */
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#define DLG_CENTER 1 /* Center the dialog */
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#define DLG_NONE 0 /* No options */
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int add_widget (Dlg_head *dest, void *Widget);
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/* Runs dialog d */
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int run_dlg (Dlg_head *d);
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void dlg_run_done (Dlg_head *h);
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void dlg_process_event (Dlg_head *h, int key, Gpm_Event *event);
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void init_dlg (Dlg_head *h);
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/* To activate/deactivate the idle message generation */
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void set_idle_proc (Dlg_head *d, int enable);
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void dlg_redraw (Dlg_head *h);
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void destroy_dlg (Dlg_head *h);
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void widget_set_size (Widget *widget, int x1, int y1, int x2, int y2);
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void dlg_broadcast_msg (Dlg_head *h, int message, int reverse);
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void init_widget (Widget *w, int y, int x, int lines, int cols,
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callback_fn callback, mouse_h mouse_handler);
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/* Default callback for dialogs */
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cb_ret_t default_dlg_callback (Dlg_head *h, dlg_msg_t msg, int parm);
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/* Default callback for widgets */
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cb_ret_t default_proc (widget_msg_t msg, int parm);
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/* Default paint routine for dialogs */
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void common_dialog_repaint (struct Dlg_head *h);
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#define real_widget_move(w, _y, _x) move((w)->y + _y, (w)->x + _x)
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#define dlg_move(h, _y, _x) move(((Dlg_head *) h)->y + _y, \
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((Dlg_head *) h)->x + _x)
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#define widget_move(w,y,x) real_widget_move((Widget*)w,y,x)
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extern Dlg_head *current_dlg;
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static inline cb_ret_t
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send_message (Widget *w, widget_msg_t msg, int parm)
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{
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return (*(w->callback)) (w, msg, parm);
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}
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void dlg_replace_widget (Dlg_head *h, Widget *old, Widget *new);
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int dlg_overlap (Widget *a, Widget *b);
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void widget_erase (Widget *);
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void dlg_erase (Dlg_head *h);
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void dlg_stop (Dlg_head *h);
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/* Widget selection */
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int dlg_select_widget (Dlg_head *h, void *widget);
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void dlg_one_up (Dlg_head *h);
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void dlg_one_down (Dlg_head *h);
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int dlg_focus (Dlg_head *h);
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Widget *find_widget_type (Dlg_head *h, void *callback);
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void dlg_select_by_id (Dlg_head *h, int id);
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/* Sets/clear the specified flag in the options field */
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#define widget_option(w,f,i) \
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w.options = ((i) ? (w.options | (f)) : (w.options & (~(f))))
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#define widget_want_cursor(w,i) widget_option(w, W_WANT_CURSOR, i)
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#define widget_want_hotkey(w,i) widget_option(w, W_WANT_HOTKEY, i)
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#define widget_want_postkey(w,i) widget_option(w, W_WANT_POSTKEY, i)
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/* Used in load_prompt() */
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void update_cursor (Dlg_head *h);
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#endif /* MC_DLG_H */
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