Adding upstream version 3:4.8.29.upstream/3%4.8.29upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 287 insertions, 0 deletions

diff --git a/lib/widget/buttonbar.c b/lib/widget/buttonbar.c
new file mode 100644
index 0000000..9193de3
--- /dev/null
+++ b/lib/widget/buttonbar.c
@@ -0,0 +1,287 @@
+/*
+   Widgets for the Midnight Commander
+
+   Copyright (C) 1994-2022
+   Free Software Foundation, Inc.
+
+   Authors:
+   Radek Doulik, 1994, 1995
+   Miguel de Icaza, 1994, 1995
+   Jakub Jelinek, 1995
+   Andrej Borsenkow, 1996
+   Norbert Warmuth, 1997
+   Andrew Borodin <aborodin@vmail.ru>, 2009-2022
+
+   This file is part of the Midnight Commander.
+
+   The Midnight Commander 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 3 of the License,
+   or (at your option) any later version.
+
+   The Midnight Commander 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, see <http://www.gnu.org/licenses/>.
+ */
+
+/** \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/key.h"        /* XCTRL and ALT macros  */
+#include "lib/skin.h"
+#include "lib/strutil.h"
+#include "lib/util.h"
+#include "lib/widget.h"
+
+/*** 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;
+    Widget *w = WIDGET (bb);
+    Widget *target;
+
+    if ((bb != NULL) && (bb->labels[i].command != CK_IgnoreKey))
+    {
+        target = (bb->labels[i].receiver != NULL) ? bb->labels[i].receiver : WIDGET (w->owner);
+        ret = send_message (target, w, MSG_ACTION, bb->labels[i].command, NULL);
+    }
+    return ret;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static cb_ret_t
+buttonbar_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data)
+{
+    WButtonBar *bb = BUTTONBAR (w);
+    int i;
+
+    switch (msg)
+    {
+    case MSG_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 MSG_DRAW:
+        if (widget_get_state (w, WST_VISIBLE))
+        {
+            buttonbar_init_button_positions (bb);
+            widget_gotoyx (w, 0, 0);
+            tty_setcolor (DEFAULT_COLOR);
+            tty_printf ("%-*s", w->rect.cols, "");
+            widget_gotoyx (w, 0, 0);
+
+            for (i = 0; i < BUTTONBAR_LABELS_NUM; i++)
+            {
+                int width;
+                const char *text;
+
+                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 MSG_DESTROY:
+        for (i = 0; i < BUTTONBAR_LABELS_NUM; i++)
+            g_free (bb->labels[i].text);
+        return MSG_HANDLED;
+
+    default:
+        return widget_default_callback (w, sender, msg, parm, data);
+    }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+buttonbar_mouse_callback (Widget * w, mouse_msg_t msg, mouse_event_t * event)
+{
+    switch (msg)
+    {
+    case MSG_MOUSE_CLICK:
+        {
+            WButtonBar *bb = BUTTONBAR (w);
+            int button;
+
+            button = buttonbar_get_button_by_x_coord (bb, event->x);
+            if (button >= 0)
+                buttonbar_call (bb, button);
+            break;
+        }
+
+    default:
+        break;
+    }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/*** public functions ****************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+WButtonBar *
+buttonbar_new (void)
+{
+    WRect r = { LINES - 1, 0, 1, COLS };
+    WButtonBar *bb;
+    Widget *w;
+
+    bb = g_new0 (WButtonBar, 1);
+    w = WIDGET (bb);
+    widget_init (w, &r, buttonbar_callback, buttonbar_mouse_callback);
+
+    w->pos_flags = WPOS_KEEP_HORZ | WPOS_KEEP_BOTTOM;
+    widget_want_hotkey (w, TRUE);
+
+    return bb;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void
+buttonbar_set_label (WButtonBar * bb, int idx, const char *text, const global_keymap_t * keymap,
+                     Widget * receiver)
+{
+    if ((bb != NULL) && (idx >= 1) && (idx <= BUTTONBAR_LABELS_NUM))
+    {
+        long command = CK_IgnoreKey;
+
+        if (keymap != NULL)
+            command = keybind_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 WDialog * h)
+{
+    return BUTTONBAR (widget_find_by_type (CONST_WIDGET (h), buttonbar_callback));
+}