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Diffstat (limited to 'lib/widget/gauge.c')
| -rw-r--r-- | lib/widget/gauge.c | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/lib/widget/gauge.c b/lib/widget/gauge.c new file mode 100644 index 0000000..327431a --- /dev/null +++ b/lib/widget/gauge.c @@ -0,0 +1,174 @@ +/* + 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 gauge.c + * \brief Source: WGauge widget (progress indicator) + */ + +#include <config.h> + +#include <stdlib.h> +#include <string.h> + +#include "lib/global.h" + +#include "lib/tty/tty.h" +#include "lib/tty/color.h" +#include "lib/skin.h" +#include "lib/widget.h" + +/*** global variables ****************************************************************************/ + +/*** file scope macro definitions ****************************************************************/ + +/*** file scope type declarations ****************************************************************/ + +/*** file scope variables ************************************************************************/ + +/*** file scope functions ************************************************************************/ + +static cb_ret_t +gauge_callback (Widget * w, Widget * sender, widget_msg_t msg, int parm, void *data) +{ + WGauge *g = GAUGE (w); + const int *colors; + + switch (msg) + { + case MSG_DRAW: + colors = widget_get_colors (w); + widget_gotoyx (w, 0, 0); + if (!g->shown) + { + tty_setcolor (colors[DLG_COLOR_NORMAL]); + tty_printf ("%*s", w->rect.cols, ""); + } + else + { + int gauge_len; + int percentage, columns; + int total = g->max; + int done = g->current; + + if (total <= 0 || done < 0) + { + done = 0; + total = 100; + } + if (done > total) + done = total; + while (total > 65535) + { + total /= 256; + done /= 256; + } + + gauge_len = w->rect.cols - 7; /* 7 positions for percentage */ + + percentage = (200 * done / total + 1) / 2; + columns = (2 * gauge_len * done / total + 1) / 2; + tty_print_char ('['); + if (g->from_left_to_right) + { + tty_setcolor (GAUGE_COLOR); + tty_printf ("%*s", columns, ""); + tty_setcolor (colors[DLG_COLOR_NORMAL]); + tty_printf ("%*s] %3d%%", gauge_len - columns, "", percentage); + } + else + { + tty_setcolor (colors[DLG_COLOR_NORMAL]); + tty_printf ("%*s", gauge_len - columns, ""); + tty_setcolor (GAUGE_COLOR); + tty_printf ("%*s", columns, ""); + tty_setcolor (colors[DLG_COLOR_NORMAL]); + tty_printf ("] %3d%%", percentage); + } + } + return MSG_HANDLED; + + default: + return widget_default_callback (w, sender, msg, parm, data); + } +} + +/* --------------------------------------------------------------------------------------------- */ +/*** public functions ****************************************************************************/ +/* --------------------------------------------------------------------------------------------- */ + +WGauge * +gauge_new (int y, int x, int cols, gboolean shown, int max, int current) +{ + WRect r = { y, x, 1, cols }; + WGauge *g; + Widget *w; + + g = g_new (WGauge, 1); + w = WIDGET (g); + widget_init (w, &r, gauge_callback, NULL); + + g->shown = shown; + if (max == 0) + max = 1; /* I do not like division by zero :) */ + g->max = max; + g->current = current; + g->from_left_to_right = TRUE; + + return g; +} + +/* --------------------------------------------------------------------------------------------- */ + +void +gauge_set_value (WGauge * g, int max, int current) +{ + if (g->current == current && g->max == max) + return; /* Do not flicker */ + + if (max == 0) + max = 1; /* I do not like division by zero :) */ + g->current = current; + g->max = max; + widget_draw (WIDGET (g)); +} + +/* --------------------------------------------------------------------------------------------- */ + +void +gauge_show (WGauge * g, gboolean shown) +{ + if (g->shown != shown) + { + g->shown = shown; + widget_draw (WIDGET (g)); + } +} + +/* --------------------------------------------------------------------------------------------- */ |