configure.c: fix AX_GCC_FUNC_ATTRIBUTE detection on custom CFLAGS
[midnight-commander.git] / lib / widget / buttonbar.c
blobded1cabf411f005b9b23e579d191ce53cba650b8
1 /*
2 Widgets for the Midnight Commander
4 Copyright (C) 1994-2019
5 Free Software Foundation, Inc.
7 Authors:
8 Radek Doulik, 1994, 1995
9 Miguel de Icaza, 1994, 1995
10 Jakub Jelinek, 1995
11 Andrej Borsenkow, 1996
12 Norbert Warmuth, 1997
13 Andrew Borodin <aborodin@vmail.ru>, 2009, 2010, 2013, 2016
15 This file is part of the Midnight Commander.
17 The Midnight Commander is free software: you can redistribute it
18 and/or modify it under the terms of the GNU General Public License as
19 published by the Free Software Foundation, either version 3 of the License,
20 or (at your option) any later version.
22 The Midnight Commander is distributed in the hope that it will be useful,
23 but WITHOUT ANY WARRANTY; without even the implied warranty of
24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 GNU General Public License for more details.
27 You should have received a copy of the GNU General Public License
28 along with this program. If not, see <http://www.gnu.org/licenses/>.
31 /** \file buttonbar.c
32 * \brief Source: WButtonBar widget
35 #include <config.h>
37 #include <stdlib.h>
38 #include <string.h>
40 #include "lib/global.h"
42 #include "lib/tty/tty.h"
43 #include "lib/tty/key.h" /* XCTRL and ALT macros */
44 #include "lib/skin.h"
45 #include "lib/strutil.h"
46 #include "lib/util.h"
47 #include "lib/keybind.h" /* global_keymap_t */
48 #include "lib/widget.h"
50 /*** global variables ****************************************************************************/
52 /*** file scope macro definitions ****************************************************************/
54 /*** file scope type declarations ****************************************************************/
56 /*** file scope variables ************************************************************************/
58 /*** file scope functions ************************************************************************/
59 /* --------------------------------------------------------------------------------------------- */
61 /* calculate positions of buttons; width is never less than 7 */
62 static void
63 buttonbar_init_button_positions (WButtonBar * bb)
65 int i;
66 int pos = 0;
68 if (COLS < BUTTONBAR_LABELS_NUM * 7)
70 for (i = 0; i < BUTTONBAR_LABELS_NUM; i++)
72 if (pos + 7 <= COLS)
73 pos += 7;
75 bb->labels[i].end_coord = pos;
78 else
80 /* Distribute the extra width in a way that the middle vertical line
81 (between F5 and F6) aligns with the two panels. The extra width
82 is distributed in this order: F10, F5, F9, F4, ..., F6, F1. */
83 int dv, md;
85 dv = COLS / BUTTONBAR_LABELS_NUM;
86 md = COLS % BUTTONBAR_LABELS_NUM;
88 for (i = 0; i < BUTTONBAR_LABELS_NUM / 2; i++)
90 pos += dv;
91 if (BUTTONBAR_LABELS_NUM / 2 - 1 - i < md / 2)
92 pos++;
94 bb->labels[i].end_coord = pos;
97 for (; i < BUTTONBAR_LABELS_NUM; i++)
99 pos += dv;
100 if (BUTTONBAR_LABELS_NUM - 1 - i < (md + 1) / 2)
101 pos++;
103 bb->labels[i].end_coord = pos;
108 /* --------------------------------------------------------------------------------------------- */
110 /* return width of one button */
111 static int
112 buttonbar_get_button_width (const WButtonBar * bb, int i)
114 if (i == 0)
115 return bb->labels[0].end_coord;
116 return bb->labels[i].end_coord - bb->labels[i - 1].end_coord;
119 /* --------------------------------------------------------------------------------------------- */
121 static int
122 buttonbar_get_button_by_x_coord (const WButtonBar * bb, int x)
124 int i;
126 for (i = 0; i < BUTTONBAR_LABELS_NUM; i++)
127 if (bb->labels[i].end_coord > x)
128 return i;
130 return (-1);
133 /* --------------------------------------------------------------------------------------------- */
135 static void
136 set_label_text (WButtonBar * bb, int idx, const char *text)
138 g_free (bb->labels[idx - 1].text);
139 bb->labels[idx - 1].text = g_strdup (text);
142 /* --------------------------------------------------------------------------------------------- */
144 /* returns TRUE if a function has been called, FALSE otherwise. */
145 static gboolean
146 buttonbar_call (WButtonBar * bb, int i)
148 cb_ret_t ret = MSG_NOT_HANDLED;
149 Widget *w = WIDGET (bb);
150 Widget *target;
152 if ((bb != NULL) && (bb->labels[i].command != CK_IgnoreKey))
154 target = (bb->labels[i].receiver != NULL) ? bb->labels[i].receiver : WIDGET (w->owner);
155 ret = send_message (target, w, MSG_ACTION, bb->labels[i].command, NULL);
157 return ret;
160 /* --------------------------------------------------------------------------------------------- */
162 static cb_ret_t
163 buttonbar_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
165 WButtonBar *bb = BUTTONBAR (w);
166 int i;
168 switch (msg)
170 case MSG_HOTKEY:
171 for (i = 0; i < BUTTONBAR_LABELS_NUM; i++)
172 if (parm == KEY_F (i + 1) && buttonbar_call (bb, i))
173 return MSG_HANDLED;
174 return MSG_NOT_HANDLED;
176 case MSG_DRAW:
177 if (bb->visible)
179 buttonbar_init_button_positions (bb);
180 widget_move (w, 0, 0);
181 tty_setcolor (DEFAULT_COLOR);
182 tty_printf ("%-*s", w->cols, "");
183 widget_move (w, 0, 0);
185 for (i = 0; i < BUTTONBAR_LABELS_NUM; i++)
187 int width;
188 const char *text;
190 width = buttonbar_get_button_width (bb, i);
191 if (width <= 0)
192 break;
194 tty_setcolor (BUTTONBAR_HOTKEY_COLOR);
195 tty_printf ("%2d", i + 1);
197 tty_setcolor (BUTTONBAR_BUTTON_COLOR);
198 text = (bb->labels[i].text != NULL) ? bb->labels[i].text : "";
199 tty_print_string (str_fit_to_term (text, width - 2, J_LEFT_FIT));
202 return MSG_HANDLED;
204 case MSG_DESTROY:
205 for (i = 0; i < BUTTONBAR_LABELS_NUM; i++)
206 g_free (bb->labels[i].text);
207 return MSG_HANDLED;
209 default:
210 return widget_default_callback (w, sender, msg, parm, data);
214 /* --------------------------------------------------------------------------------------------- */
216 static void
217 buttonbar_mouse_callback (Widget * w, mouse_msg_t msg, mouse_event_t * event)
219 switch (msg)
221 case MSG_MOUSE_CLICK:
223 WButtonBar *bb = BUTTONBAR (w);
224 int button;
226 button = buttonbar_get_button_by_x_coord (bb, event->x);
227 if (button >= 0)
228 buttonbar_call (bb, button);
229 break;
232 default:
233 break;
237 /* --------------------------------------------------------------------------------------------- */
238 /*** public functions ****************************************************************************/
239 /* --------------------------------------------------------------------------------------------- */
241 WButtonBar *
242 buttonbar_new (gboolean visible)
244 WButtonBar *bb;
245 Widget *w;
247 bb = g_new0 (WButtonBar, 1);
248 w = WIDGET (bb);
249 widget_init (w, LINES - 1, 0, 1, COLS, buttonbar_callback, buttonbar_mouse_callback);
251 w->pos_flags = WPOS_KEEP_HORZ | WPOS_KEEP_BOTTOM;
252 bb->visible = visible;
253 widget_want_hotkey (w, TRUE);
255 return bb;
258 /* --------------------------------------------------------------------------------------------- */
260 void
261 buttonbar_set_label (WButtonBar * bb, int idx, const char *text, const global_keymap_t * keymap,
262 Widget * receiver)
264 if ((bb != NULL) && (idx >= 1) && (idx <= BUTTONBAR_LABELS_NUM))
266 long command = CK_IgnoreKey;
268 if (keymap != NULL)
269 command = keybind_lookup_keymap_command (keymap, KEY_F (idx));
271 if ((text == NULL) || (text[0] == '\0'))
272 set_label_text (bb, idx, "");
273 else
274 set_label_text (bb, idx, text);
276 bb->labels[idx - 1].command = command;
277 bb->labels[idx - 1].receiver = WIDGET (receiver);
281 /* --------------------------------------------------------------------------------------------- */
283 /* Find ButtonBar widget in the dialog */
284 WButtonBar *
285 find_buttonbar (const WDialog * h)
287 return BUTTONBAR (find_widget_type (h, buttonbar_callback));