--- /dev/null
+/* ply-text-pulser.c - simple text based pulsing animation
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * 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, 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., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written by: Ray Strode <rstrode@redhat.com>
+ */
+#include "config.h"
+
+#include <assert.h>
+#include <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <math.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <values.h>
+#include <unistd.h>
+#include <wchar.h>
+
+#include "ply-text-pulser.h"
+#include "ply-event-loop.h"
+#include "ply-array.h"
+#include "ply-logger.h"
+#include "ply-utils.h"
+#include "ply-window.h"
+
+#include <linux/kd.h>
+
+#ifndef FRAMES_PER_SECOND
+#define FRAMES_PER_SECOND 10
+#endif
+
+#ifndef INDICATOR_STRING
+#define INDICATOR_STRING "██████"
+#endif
+
+#define NUMBER_OF_INDICATOR_COLUMNS 6
+
+struct _ply_text_pulser
+{
+ ply_event_loop_t *loop;
+
+ ply_window_t *window;
+
+ int column, row;
+ int number_of_rows;
+ int number_of_columns;
+ int spinner_position;
+ double start_time, now;
+};
+
+ply_text_pulser_t *
+ply_text_pulser_new (void)
+{
+ ply_text_pulser_t *pulser;
+
+ pulser = calloc (1, sizeof (ply_text_pulser_t));
+
+ pulser->number_of_rows = 0;
+ pulser->number_of_columns = 0;
+ pulser->row = 0;
+ pulser->column = 0;
+ pulser->spinner_position = 0;
+ pulser->number_of_columns = 40;
+ pulser->number_of_rows = 3;
+
+ return pulser;
+}
+
+void
+ply_text_pulser_free (ply_text_pulser_t *pulser)
+{
+ if (pulser == NULL)
+ return;
+
+ free (pulser);
+}
+
+static void
+draw_frame (ply_text_pulser_t *pulser,
+ int column,
+ int row)
+{
+ int i;
+
+ ply_window_set_text_cursor_position (pulser->window,
+ column, row);
+ /* Top of frame
+ */
+ write (STDOUT_FILENO, "┌", strlen ("┌"));
+ for (i = 0; i < pulser->number_of_columns - 2; i++)
+ write (STDOUT_FILENO, "─", strlen ("─"));
+ write (STDOUT_FILENO, "┐", strlen ("┐"));
+
+ ply_window_set_text_cursor_position (pulser->window,
+ column, row + 1);
+ /* Middle
+ */
+ write (STDOUT_FILENO, "│", strlen ("│"));
+
+ ply_window_set_text_cursor_position (pulser->window,
+ column + pulser->number_of_columns - 1,
+ row + 1);
+ write (STDOUT_FILENO, "│", strlen ("│"));
+
+ ply_window_set_text_cursor_position (pulser->window,
+ column, row + 2);
+ /* Bottom of frame
+ */
+ write (STDOUT_FILENO, "└", strlen ("└"));
+
+ for (i = 0; i < pulser->number_of_columns - 2; i++)
+ write (STDOUT_FILENO, "─", strlen ("─"));
+ write (STDOUT_FILENO, "┘", strlen ("┘"));
+}
+
+static void
+draw_indicator (ply_text_pulser_t *pulser)
+{
+ write (STDOUT_FILENO, INDICATOR_STRING, strlen (INDICATOR_STRING));
+}
+
+static void
+animate_at_time (ply_text_pulser_t *pulser,
+ double time)
+{
+ ply_window_set_mode (pulser->window, PLY_WINDOW_MODE_TEXT);
+
+ draw_frame (pulser, pulser->column, pulser->row);
+
+ ply_window_set_text_cursor_position (pulser->window,
+ pulser->column + pulser->spinner_position,
+ pulser->row + 1);
+ write (STDOUT_FILENO, " ", strlen (" "));
+ pulser->spinner_position = ((pulser->number_of_columns - 2) - NUMBER_OF_INDICATOR_COLUMNS - 1) * (.5 * sin (time) + .5) + 2;
+ ply_window_set_text_cursor_position (pulser->window,
+ pulser->column + pulser->spinner_position,
+ pulser->row + 1);
+ draw_indicator (pulser);
+}
+
+static void
+on_timeout (ply_text_pulser_t *pulser)
+{
+ double sleep_time;
+ pulser->now = ply_get_timestamp ();
+
+#ifdef REAL_TIME_ANIMATION
+ animate_at_time (pulser,
+ pulser->now - pulser->start_time);
+#else
+ static double time = 0.0;
+ time += 1.0 / FRAMES_PER_SECOND;
+ animate_at_time (pulser, time);
+#endif
+
+ sleep_time = 1.0 / FRAMES_PER_SECOND;
+ sleep_time = MAX (sleep_time - (ply_get_timestamp () - pulser->now),
+ 0.005);
+
+ ply_event_loop_watch_for_timeout (pulser->loop,
+ sleep_time,
+ (ply_event_loop_timeout_handler_t)
+ on_timeout, pulser);
+}
+
+bool
+ply_text_pulser_start (ply_text_pulser_t *pulser,
+ ply_event_loop_t *loop,
+ ply_window_t *window,
+ int column,
+ int row)
+{
+ assert (pulser != NULL);
+ assert (pulser->loop == NULL);
+
+ pulser->loop = loop;
+ pulser->window = window;
+
+ pulser->row = row;
+ pulser->column = column;
+
+ pulser->start_time = ply_get_timestamp ();
+
+ ply_event_loop_watch_for_timeout (pulser->loop,
+ 1.0 / FRAMES_PER_SECOND,
+ (ply_event_loop_timeout_handler_t)
+ on_timeout, pulser);
+
+ return true;
+}
+
+void
+ply_text_pulser_stop (ply_text_pulser_t *pulser)
+{
+ pulser->window = NULL;
+
+ if (pulser->loop != NULL)
+ {
+ ply_event_loop_stop_watching_for_timeout (pulser->loop,
+ (ply_event_loop_timeout_handler_t)
+ on_timeout, pulser);
+ pulser->loop = NULL;
+ }
+}
+
+int
+ply_text_pulser_get_number_of_columns (ply_text_pulser_t *pulser)
+{
+ return pulser->number_of_columns;
+}
+
+int
+ply_text_pulser_get_number_of_rows (ply_text_pulser_t *pulser)
+{
+ return pulser->number_of_rows;
+}
+
+/* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */
--- /dev/null
+/* ply-text-pulser.h - simple text based pulsing animation
+ *
+ * Copyright (C) 2008 Red Hat, Inc.
+ *
+ * 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, 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., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.
+ *
+ * Written By: Ray Strode <rstrode@redhat.com>
+ */
+#ifndef PLY_TEXT_PULSER_H
+#define PLY_TEXT_PULSER_H
+
+#include <stdbool.h>
+#include <stdint.h>
+#include <unistd.h>
+
+#include "ply-event-loop.h"
+#include "ply-window.h"
+
+typedef struct _ply_text_pulser ply_text_pulser_t;
+
+#ifndef PLY_HIDE_FUNCTION_DECLARATIONS
+ply_text_pulser_t *ply_text_pulser_new (void);
+void ply_text_pulser_free (ply_text_pulser_t *pulser);
+
+bool ply_text_pulser_load (ply_text_pulser_t *pulser);
+bool ply_text_pulser_start (ply_text_pulser_t *pulser,
+ ply_event_loop_t *loop,
+ ply_window_t *window,
+ int column,
+ int row);
+void ply_text_pulser_stop (ply_text_pulser_t *pulser);
+
+int ply_text_pulser_get_number_of_rows (ply_text_pulser_t *pulser);
+int ply_text_pulser_get_number_of_columns (ply_text_pulser_t *pulser);
+#endif
+
+#endif /* PLY_TEXT_PULSER_H */
+/* vim: set ts=4 sw=4 expandtab autoindent cindent cino={.5s,(0: */
projects / thirdparty / plymouth.git / commitdiff
