mc/lib/widget/buttonbar.c
Andrew Borodin 71364f88c3 Split lib/widget/widget.[ch] and lib/widget/wtools.[ch] files
...into small: one widget in one file.
Renamed most if WInput functions.
Minor optimization.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
2010-11-24 10:51:30 +03:00

285 lines
8.4 KiB
C

/* Widgets for the Midnight Commander
Copyright (C) 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
2004, 2005, 2006, 2007, 2009, 2010 Free Software Foundation, Inc.
Authors: 1994, 1995 Radek Doulik
1994, 1995 Miguel de Icaza
1995 Jakub Jelinek
1996 Andrej Borsenkow
1997 Norbert Warmuth
2009, 2010 Andrew Borodin
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/** \file buttonbar.c
* \brief Source: WButtonBar widget
*/
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include "lib/global.h"
#include "lib/tty/tty.h"
#include "lib/tty/mouse.h"
#include "lib/tty/key.h" /* XCTRL and ALT macros */
#include "lib/skin.h"
#include "lib/strutil.h"
#include "lib/util.h"
#include "lib/widget.h"
/* TODO: these includes should be removed! */
#include "src/cmddef.h" /* CK_ cmd name const */
#include "src/keybind.h" /* global_keymap_t */
/*** global variables ****************************************************************************/
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/*** file scope variables ************************************************************************/
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/* calculate positions of buttons; width is never less than 7 */
static void
buttonbar_init_button_positions (WButtonBar * bb)
{
int i;
int pos = 0;
if (COLS < BUTTONBAR_LABELS_NUM * 7)
{
for (i = 0; i < BUTTONBAR_LABELS_NUM; i++)
{
if (pos + 7 <= COLS)
pos += 7;
bb->labels[i].end_coord = pos;
}
}
else
{
/* Distribute the extra width in a way that the middle vertical line
(between F5 and F6) aligns with the two panels. The extra width
is distributed in this order: F10, F5, F9, F4, ..., F6, F1. */
int dv, md;
dv = COLS / BUTTONBAR_LABELS_NUM;
md = COLS % BUTTONBAR_LABELS_NUM;
for (i = 0; i < BUTTONBAR_LABELS_NUM / 2; i++)
{
pos += dv;
if (BUTTONBAR_LABELS_NUM / 2 - 1 - i < md / 2)
pos++;
bb->labels[i].end_coord = pos;
}
for (; i < BUTTONBAR_LABELS_NUM; i++)
{
pos += dv;
if (BUTTONBAR_LABELS_NUM - 1 - i < (md + 1) / 2)
pos++;
bb->labels[i].end_coord = pos;
}
}
}
/* --------------------------------------------------------------------------------------------- */
/* return width of one button */
static int
buttonbar_get_button_width (const WButtonBar * bb, int i)
{
if (i == 0)
return bb->labels[0].end_coord;
return bb->labels[i].end_coord - bb->labels[i - 1].end_coord;
}
/* --------------------------------------------------------------------------------------------- */
static int
buttonbar_get_button_by_x_coord (const WButtonBar * bb, int x)
{
int i;
for (i = 0; i < BUTTONBAR_LABELS_NUM; i++)
if (bb->labels[i].end_coord > x)
return i;
return (-1);
}
/* --------------------------------------------------------------------------------------------- */
static void
set_label_text (WButtonBar * bb, int idx, const char *text)
{
g_free (bb->labels[idx - 1].text);
bb->labels[idx - 1].text = g_strdup (text);
}
/* --------------------------------------------------------------------------------------------- */
/* returns TRUE if a function has been called, FALSE otherwise. */
static gboolean
buttonbar_call (WButtonBar * bb, int i)
{
cb_ret_t ret = MSG_NOT_HANDLED;
if ((bb != NULL) && (bb->labels[i].command != CK_Ignore_Key))
ret = bb->widget.owner->callback (bb->widget.owner,
(Widget *) bb, DLG_ACTION,
bb->labels[i].command, bb->labels[i].receiver);
return ret;
}
/* --------------------------------------------------------------------------------------------- */
static cb_ret_t
buttonbar_callback (Widget * w, widget_msg_t msg, int parm)
{
WButtonBar *bb = (WButtonBar *) w;
int i;
const char *text;
switch (msg)
{
case WIDGET_FOCUS:
return MSG_NOT_HANDLED;
case WIDGET_HOTKEY:
for (i = 0; i < BUTTONBAR_LABELS_NUM; i++)
if (parm == KEY_F (i + 1) && buttonbar_call (bb, i))
return MSG_HANDLED;
return MSG_NOT_HANDLED;
case WIDGET_DRAW:
if (bb->visible)
{
buttonbar_init_button_positions (bb);
widget_move (&bb->widget, 0, 0);
tty_setcolor (DEFAULT_COLOR);
tty_printf ("%-*s", bb->widget.cols, "");
widget_move (&bb->widget, 0, 0);
for (i = 0; i < BUTTONBAR_LABELS_NUM; i++)
{
int width;
width = buttonbar_get_button_width (bb, i);
if (width <= 0)
break;
tty_setcolor (BUTTONBAR_HOTKEY_COLOR);
tty_printf ("%2d", i + 1);
tty_setcolor (BUTTONBAR_BUTTON_COLOR);
text = (bb->labels[i].text != NULL) ? bb->labels[i].text : "";
tty_print_string (str_fit_to_term (text, width - 2, J_LEFT_FIT));
}
}
return MSG_HANDLED;
case WIDGET_DESTROY:
for (i = 0; i < BUTTONBAR_LABELS_NUM; i++)
g_free (bb->labels[i].text);
return MSG_HANDLED;
default:
return default_proc (msg, parm);
}
}
/* --------------------------------------------------------------------------------------------- */
static int
buttonbar_event (Gpm_Event * event, void *data)
{
WButtonBar *bb = data;
int button;
if (!(event->type & GPM_UP))
return MOU_NORMAL;
if (event->y == 2)
return MOU_NORMAL;
button = buttonbar_get_button_by_x_coord (bb, event->x - 1);
if (button >= 0)
buttonbar_call (bb, button);
return MOU_NORMAL;
}
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
WButtonBar *
buttonbar_new (gboolean visible)
{
WButtonBar *bb;
bb = g_new0 (WButtonBar, 1);
init_widget (&bb->widget, LINES - 1, 0, 1, COLS, buttonbar_callback, buttonbar_event);
bb->widget.pos_flags = WPOS_KEEP_HORZ | WPOS_KEEP_BOTTOM;
bb->visible = visible;
widget_want_hotkey (bb->widget, 1);
widget_want_cursor (bb->widget, 0);
return bb;
}
/* --------------------------------------------------------------------------------------------- */
void
buttonbar_set_label (WButtonBar * bb, int idx, const char *text,
const struct global_keymap_t *keymap, const Widget * receiver)
{
if ((bb != NULL) && (idx >= 1) && (idx <= BUTTONBAR_LABELS_NUM))
{
unsigned long command = CK_Ignore_Key;
if (keymap != NULL)
command = lookup_keymap_command (keymap, KEY_F (idx));
if ((text == NULL) || (text[0] == '\0'))
set_label_text (bb, idx, "");
else
set_label_text (bb, idx, text);
bb->labels[idx - 1].command = command;
bb->labels[idx - 1].receiver = (Widget *) receiver;
}
}
/* --------------------------------------------------------------------------------------------- */
/* Find ButtonBar widget in the dialog */
WButtonBar *
find_buttonbar (const Dlg_head * h)
{
return (WButtonBar *) find_widget_type (h, buttonbar_callback);
}