2 Widgets for the Midnight Commander
4 Copyright (C) 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
5 2004, 2005, 2006, 2007, 2009, 2010, 2011, 2012, 2013
6 The Free Software Foundation, Inc.
9 Radek Doulik, 1994, 1995
10 Miguel de Icaza, 1994, 1995
12 Andrej Borsenkow, 1996
14 Andrew Borodin <aborodin@vmail.ru>, 2009, 2010, 2011, 2012, 2013
16 This file is part of the Midnight Commander.
18 The Midnight Commander is free software: you can redistribute it
19 and/or modify it under the terms of the GNU General Public License as
20 published by the Free Software Foundation, either version 3 of the License,
21 or (at your option) any later version.
23 The Midnight Commander is distributed in the hope that it will be useful,
24 but WITHOUT ANY WARRANTY; without even the implied warranty of
25 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 GNU General Public License for more details.
28 You should have received a copy of the GNU General Public License
29 along with this program. If not, see <http://www.gnu.org/licenses/>.
32 /** \file widget-common.c
33 * \brief Source: shared stuff of widgets
41 #include "lib/global.h"
43 #include "lib/tty/tty.h"
44 #include "lib/tty/color.h"
46 #include "lib/strutil.h"
47 #include "lib/widget.h"
49 /*** global variables ****************************************************************************/
51 /*** file scope macro definitions ****************************************************************/
53 /*** file scope type declarations ****************************************************************/
55 /*** file scope variables ************************************************************************/
57 /*** file scope functions ************************************************************************/
59 /* --------------------------------------------------------------------------------------------- */
60 /*** public functions ****************************************************************************/
61 /* --------------------------------------------------------------------------------------------- */
64 parse_hotkey (const char *text
)
72 /* search for '&', that is not on the of text */
73 cp
= strchr (text
, '&');
74 if (cp
!= NULL
&& cp
[1] != '\0')
76 result
.start
= g_strndup (text
, cp
- text
);
80 p
= str_cget_next_char (cp
);
81 result
.hotkey
= g_strndup (cp
, p
- cp
);
84 result
.end
= g_strdup (cp
);
88 result
.start
= g_strdup (text
);
96 /* --------------------------------------------------------------------------------------------- */
99 release_hotkey (const hotkey_t hotkey
)
101 g_free (hotkey
.start
);
102 g_free (hotkey
.hotkey
);
106 /* --------------------------------------------------------------------------------------------- */
109 hotkey_width (const hotkey_t hotkey
)
113 result
= str_term_width1 (hotkey
.start
);
114 result
+= (hotkey
.hotkey
!= NULL
) ? str_term_width1 (hotkey
.hotkey
) : 0;
115 result
+= (hotkey
.end
!= NULL
) ? str_term_width1 (hotkey
.end
) : 0;
119 /* --------------------------------------------------------------------------------------------- */
122 hotkey_draw (Widget
* w
, const hotkey_t hotkey
, gboolean focused
)
124 widget_selectcolor (w
, focused
, FALSE
);
125 tty_print_string (hotkey
.start
);
127 if (hotkey
.hotkey
!= NULL
)
129 widget_selectcolor (w
, focused
, TRUE
);
130 tty_print_string (hotkey
.hotkey
);
131 widget_selectcolor (w
, focused
, FALSE
);
134 if (hotkey
.end
!= NULL
)
135 tty_print_string (hotkey
.end
);
138 /* --------------------------------------------------------------------------------------------- */
141 init_widget (Widget
* w
, int y
, int x
, int lines
, int cols
,
142 widget_cb_fn callback
, mouse_h mouse_handler
)
148 w
->callback
= callback
;
149 w
->mouse
= mouse_handler
;
150 w
->set_options
= widget_default_set_options_callback
;
153 /* Almost all widgets want to put the cursor in a suitable place */
154 w
->options
= W_WANT_CURSOR
;
157 /* --------------------------------------------------------------------------------------------- */
159 /* Default callback for widgets */
161 widget_default_callback (Widget
* w
, Widget
* sender
, widget_msg_t msg
, int parm
, void *data
)
180 return MSG_NOT_HANDLED
;
184 /* --------------------------------------------------------------------------------------------- */
187 * Callback for applying new options to widget.
190 * @param options options set
191 * @param enable TRUE if specified options should be added, FALSE if options should be removed
194 widget_default_set_options_callback (Widget
* w
, widget_options_t options
, gboolean enable
)
197 w
->options
|= options
;
199 w
->options
&= ~options
;
201 if (w
->owner
!= NULL
&& (options
& W_DISABLED
) != 0)
202 send_message (w
, NULL
, MSG_DRAW
, 0, NULL
);
205 /* --------------------------------------------------------------------------------------------- */
208 * Apply new options to widget.
211 * @param options options set
212 * @param enable TRUE if specified options should be added, FALSE if options should be removed
215 widget_set_options (Widget
* w
, widget_options_t options
, gboolean enable
)
217 w
->set_options (w
, options
, enable
);
220 /* --------------------------------------------------------------------------------------------- */
223 widget_set_size (Widget
* widget
, int y
, int x
, int lines
, int cols
)
228 widget
->lines
= lines
;
229 send_message (widget
, NULL
, MSG_RESIZE
, 0, NULL
);
232 /* --------------------------------------------------------------------------------------------- */
235 widget_selectcolor (Widget
* w
, gboolean focused
, gboolean hotkey
)
237 WDialog
*h
= w
->owner
;
240 if ((w
->options
& W_DISABLED
) != 0)
241 color
= DISABLED_COLOR
;
245 color
= h
->color
[DLG_COLOR_HOT_FOCUS
];
247 color
= h
->color
[DLG_COLOR_HOT_NORMAL
];
252 color
= h
->color
[DLG_COLOR_FOCUS
];
254 color
= h
->color
[DLG_COLOR_NORMAL
];
257 tty_setcolor (color
);
260 /* --------------------------------------------------------------------------------------------- */
263 widget_erase (Widget
* w
)
266 tty_fill_region (w
->y
, w
->x
, w
->lines
, w
->cols
, ' ');
269 /* --------------------------------------------------------------------------------------------- */
271 * Check whether widget is active or not.
272 * @param w the widget
274 * @return TRUE if the widget is active, FALSE otherwise
278 widget_is_active (const void *w
)
280 return (w
== WIDGET (w
)->owner
->current
->data
);
283 /* --------------------------------------------------------------------------------------------- */
286 widget_redraw (Widget
* w
)
290 WDialog
*h
= w
->owner
;
292 if (h
!= NULL
&& h
->state
== DLG_ACTIVE
)
293 w
->callback (w
, NULL
, MSG_DRAW
, 0, NULL
);
297 /* --------------------------------------------------------------------------------------------- */
299 * Replace widget in the dialog.
301 * @param old_w old widget that need to be replaced
302 * @param new_w new widget that will replace @old_w
306 widget_replace (Widget
* old_w
, Widget
* new_w
)
308 WDialog
*h
= old_w
->owner
;
309 gboolean should_focus
= FALSE
;
311 if (h
->widgets
== NULL
)
314 if (h
->current
== NULL
)
315 h
->current
= h
->widgets
;
317 if (old_w
== h
->current
->data
)
321 new_w
->id
= old_w
->id
;
324 h
->current
->data
= new_w
;
326 g_list_find (h
->widgets
, old_w
)->data
= new_w
;
328 send_message (old_w
, NULL
, MSG_DESTROY
, 0, NULL
);
329 send_message (new_w
, NULL
, MSG_INIT
, 0, NULL
);
332 dlg_select_widget (new_w
);
334 widget_redraw (new_w
);
337 /* --------------------------------------------------------------------------------------------- */
339 * Check whether two widgets are overlapped or not.
340 * @param a 1st widget
341 * @param b 2nd widget
343 * @return TRUE if widgets are overlapped, FALSE otherwise.
347 widget_overlapped (const Widget
* a
, const Widget
* b
)
349 return !((b
->x
>= a
->x
+ a
->cols
)
350 || (a
->x
>= b
->x
+ b
->cols
) || (b
->y
>= a
->y
+ a
->lines
) || (a
->y
>= b
->y
+ b
->lines
));
353 /* --------------------------------------------------------------------------------------------- */
354 /* get mouse pointer location within widget */
357 mouse_get_local (const Gpm_Event
* global
, const Widget
* w
)
361 local
.buttons
= global
->buttons
;
362 local
.x
= global
->x
- w
->x
;
363 local
.y
= global
->y
- w
->y
;
364 local
.type
= global
->type
;
369 /* --------------------------------------------------------------------------------------------- */
372 mouse_global_in_widget (const Gpm_Event
* event
, const Widget
* w
)
374 return (event
->x
> w
->x
) && (event
->y
> w
->y
) && (event
->x
<= w
->x
+ w
->cols
)
375 && (event
->y
<= w
->y
+ w
->lines
);
378 /* --------------------------------------------------------------------------------------------- */