screen_*(): New functions

4 files changed, 112 insertions, 0 deletions

diff --git a/src/local.mk b/src/local.mk
index afd6595..d9142ac 100644
--- a/src/local.mk
+++ b/src/local.mk
@@ -1,4 +1,6 @@
 timeteller_SOURCES += \
 	%reldir%/main.c \
+	%reldir%/screen.c \
+	%reldir%/screen.h \
 	%reldir%/speech.c \
 	%reldir%/speech.h
diff --git a/src/main.c b/src/main.c
index 3963e88..673dd24 100644
--- a/src/main.c
+++ b/src/main.c
@@ -24,6 +24,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include "screen.h"
 #include "speech.h"
 
 static const char *program_name;
@@ -54,6 +55,7 @@ int
 main(int argc, char **argv)
 {
 	struct speech *speech;
+	struct screen *screen;
 
 	set_program_name(argv[0]);
 
@@ -62,7 +64,12 @@ main(int argc, char **argv)
 		error("Failed to initialize speech synthesis engine");
 		return EXIT_FAILURE;
 	}
+
+	screen = screen_new();
+
 	speech_play_time(speech);
+
+	screen_destroy(&screen);
 	speech_destroy(&speech);
 
 	return EXIT_SUCCESS;
diff --git a/src/screen.c b/src/screen.c
new file mode 100644
index 0000000..d1f74f5
--- /dev/null
+++ b/src/screen.c
@@ -0,0 +1,67 @@
+/*
+ * Terminal screen functions
+ *
+ * Copyright (C) 2019  Patrick McDermott
+ *
+ * This file is part of Timeteller.
+ *
+ * Timeteller 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.
+ *
+ * Timeteller 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 Timeteller.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "screen.h"
+
+#include <assert.h>
+#include <curses.h>
+#include <stdlib.h>
+
+struct screen {
+	WINDOW *win;
+};
+
+struct screen *
+screen_new(void)
+{
+	struct screen *screen;
+
+	screen = calloc(1, sizeof(*screen));
+	if (screen == NULL) {
+		return NULL;
+	}
+
+	screen->win = initscr();  /* On failure, does not return.  */
+	if (noecho() == ERR || raw() == ERR) {
+		return NULL;
+	}
+	curs_set(0);  /* Ignore errors.  */
+
+	return screen;
+}
+
+void
+screen_draw(struct screen *screen)
+{
+}
+
+struct screen *
+screen_destroy(struct screen **screen_p)
+{
+	struct screen *screen;
+
+	assert(screen_p && *screen_p);
+
+	screen = *screen_p;
+
+	free(screen);
+	return screen = NULL;
+}
diff --git a/src/screen.h b/src/screen.h
new file mode 100644
index 0000000..6eaf430
--- /dev/null
+++ b/src/screen.h
@@ -0,0 +1,36 @@
+/*
+ * Terminal screen functions
+ *
+ * Copyright (C) 2019  Patrick McDermott
+ *
+ * This file is part of Timeteller.
+ *
+ * Timeteller 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.
+ *
+ * Timeteller 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 Timeteller.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef SCREEN_H_
+#define SCREEN_H_
+
+struct screen;
+
+struct screen *
+screen_new(void);
+
+void
+screen_draw(struct screen *screen);
+
+struct screen *
+screen_destroy(struct screen **screen_p);
+
+#endif  /* SCREEN_H_ */