/* volume.app.c */
/* Volume.app -- a simple volume control
*
* Copyright (C) 2000
* Daniel Richard G. <skunk@mit.edu>,
* timecop <timecop@japan.co.jp>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <getopt.h>
#include <signal.h>
#include <unistd.h>
#include <sys/stat.h>
#include <X11/X.h>
#include <X11/Xlib.h>
#include "common.h"
#include "knob.h"
#include "misc.h"
#include "mixer.h"
static int source = DEFAULT_SOURCE;
static char *mixer_device = NULL;
static bool list_sources = false;
static Display *display;
static int display_height;
static double prev_button1_press_time = 0.0;
static bool button1_pressed = false;
static int mouse_drag_home_x;
static int mouse_drag_home_y;
static void
signal_catch(int sig)
{
switch (sig)
{
case SIGUSR1:
knob_turn(-0.1);
break;
case SIGUSR2:
knob_turn(0.1);
break;
default:
abort();
break;
}
signal(sig, signal_catch);
}
static void
button_press_event(XButtonEvent *event)
{
double button_press_time = get_current_time();
switch (event->button)
{
/* Left click
*/
case 1:
knob_grab();
if ((button_press_time - prev_button1_press_time) <= MAX_DOUBLE_CLICK_TIME)
{
/* Double-click
*/
knob_toggle_mute();
prev_button1_press_time = 0.0;
} else
system("amixer set Master unmute");
prev_button1_press_time = button_press_time;
button1_pressed = true;
mouse_drag_home_x = event->x;
mouse_drag_home_y = event->y;
break;
case 3:
/*
* Right click
*/
/* popup menu? */
break;
case BUTTON_WHEEL_UP:
knob_turn(0.05);
break;
case BUTTON_WHEEL_DOWN:
knob_turn(-0.05);
break;
default:
break;
}
}
static void
button_release_event(XButtonEvent *event)
{
if (event->button == 1)
{
knob_release();
button1_pressed = false;
}
}
static void
mouse_motion_event(XMotionEvent *event)
{
if (button1_pressed)
{
if ((event->x == mouse_drag_home_x) && (event->y == mouse_drag_home_y))
{
/* This motion event was generated by an earlier
* XWarpPointer() call, so ignore it.
*/
return;
}
if (event->y != mouse_drag_home_y)
{
int delta_y = mouse_drag_home_y - event->y;
float delta_volume = (float)delta_y / (float)display_height;
knob_turn(delta_volume);
}
/* Keep mouse pointer on the knob. Note that this call
* will generate a bogus motion event (see above)
*/
XWarpPointer(
display,
None,
event->window,
event->x, event->y,
0, 0,
mouse_drag_home_x, mouse_drag_home_y);
}
}
#define HELP_TEXT \
"Volume.app " VERSION "\n" \
"usage:\n" \
" -c <n> source to control [1]\n" \
" (see -l option)\n" \
" -d <dev> mixer device [" DEFAULT_MIXER_DEVICE "]\n" \
" -h print this help\n" \
" -l print list of available sound sources\n"
void
parse_cli_options(int argc, char **argv)
{
int opt;
while ((opt = getopt(argc, argv, "c:hl")) != EOF)
{
switch (opt)
{
case 'c':
if (optarg != NULL)
source = strtod(optarg, NULL) - 1;
break;
case 'd':
if (optarg != NULL)
{
if (mixer_device != NULL)
free(mixer_device);
mixer_device = strdup(optarg);
}
break;
case 'h':
fputs(HELP_TEXT, stdout);
exit(0);
break;
case 'l':
list_sources = true;
break;
default:
break;
}
}
}
int
main(int argc, char **argv)
{
char *display_name;
XEvent event;
int idle_tick = 0;
#ifdef DEBUG
fputs("**** Volume.app: debug build starting ****\n", stderr);
#endif
parse_cli_options(argc, argv);
display_name = getenv("DISPLAY");
display = XOpenDisplay(display_name);
if (display == NULL)
{
if (display_name == NULL)
fputs("Unable to open display\n", stderr);
else
fprintf(stderr, "Unable to open display \"%s\"\n", display_name);
return EXIT_FAILURE;
}
XFlush(display);
display_height = (float)DisplayHeight(display, DefaultScreen(display));
if (mixer_device == NULL)
mixer_device = strdup(DEFAULT_MIXER_DEVICE);
mixer_init(mixer_device);
free(mixer_device);
if (list_sources)
{
mixer_print_sources();
return EXIT_SUCCESS;
}
if ((source < 0) || (source >= mixer_get_source_count()))
{
fprintf(stderr, "Invalid source number: %d\n", source + 1);
return EXIT_FAILURE;
}
mixer_set_source(source);
knob_init(display);
knob_update();
signal(SIGUSR1, signal_catch);
signal(SIGUSR2, signal_catch);
/* Main event loop
*/
while (true)
{
if (button1_pressed || (XPending(display) > 0))
{
XNextEvent(display, &event);
switch (event.type)
{
case Expose:
knob_redraw();
break;
case ButtonPress:
button_press_event(&event.xbutton);
idle_tick = 0;
break;
case ButtonRelease:
button_release_event(&event.xbutton);
idle_tick = 0;
break;
case MotionNotify:
mouse_motion_event(&event.xmotion);
idle_tick = 0;
break;
case DestroyNotify:
XCloseDisplay(display);
goto main_event_loop_exit;
default:
break;
}
} else {
knob_update();
usleep(100000);
++idle_tick;
}
}
main_event_loop_exit:
return EXIT_SUCCESS;
}
/* end volume.app.c */
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