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dockapps/wmix/wmix.c
Christophe CURIS 67548f3b6a wmix: added an option to disable grabbing the volume control keys 
There may be some case where user would like to fall back to the original
behaviour, for example if grabbing these keys could get in conflict with
other applications.

Signed-off-by: Christophe CURIS <christophe.curis@free.fr>
2014-06-07 21:27:27 +01:00

383 lines
9.3 KiB
C
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/* WMix 3.0 -- a mixer using the OSS mixer API.
* Copyright (C) 2000, 2001 timecop@japan.co.jp
* Mixer code in version 3.0 based on mixer api library by
* Daniel Richard G. <skunk@mit.edu>, which in turn was based on
* the mixer code in WMix 2.x releases.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <string.h>
#include <getopt.h>
#include <unistd.h>
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <sys/soundcard.h>
#include "include/common.h"
#include "include/mixer.h"
#include "include/misc.h"
#include "include/ui_x.h"
#include "include/mmkeys.h"
#include "include/config.h"
static Display *display;
static bool button_pressed = false;
static bool slider_pressed = false;
static double prev_button_press_time = 0.0;
static float display_height;
static float display_width;
static int mouse_drag_home_x;
static int mouse_drag_home_y;
static int idle_loop;
/* local stuff */
static void signal_catch(int sig);
static void button_press_event(XButtonEvent *event);
static void button_release_event(XButtonEvent *event);
static int key_press_event(XKeyEvent *event);
static void motion_event(XMotionEvent *event);
int main(int argc, char **argv)
{
XEvent event;
config_init();
parse_cli_options(argc, argv);
config_read();
mixer_init(config.mixer_device, config.verbose, (const char **)config.exclude_channel);
mixer_set_channel(0);
display = XOpenDisplay(config.display_name);
if (display == NULL) {
const char *name;
if (config.display_name) {
name = config.display_name;
} else {
name = getenv("DISPLAY");
if (name == NULL) {
fprintf(stderr, "wmix:error: Unable to open display, variable $DISPLAY not set\n");
return EXIT_FAILURE;
}
}
fprintf(stderr, "wmix:error: Unable to open display \"%s\"\n", name);
return EXIT_FAILURE;
}
display_width = (float)DisplayWidth(display, DefaultScreen(display)) / 4.0;
display_height = (float)DisplayHeight(display, DefaultScreen(display)) / 2.0;
dockapp_init(display);
new_window("wmix", 64, 64);
new_osd(DisplayWidth(display, DefaultScreen(display)) - 200, 60);
if (config.mmkeys)
mmkey_install(display);
config_release();
blit_string("wmix 3.0");
scroll_text(3, 4, 57, true);
ui_update();
/* add click regions */
add_region(1, 37, 36, 25, 25); /* knob */
add_region(2, 4, 42, 27, 15); /* balancer */
add_region(3, 2, 26, 7, 10); /* previous channel */
add_region(4, 10, 26, 7, 10); /* next channel */
add_region(5, 39, 14, 20, 7); /* mute toggle */
add_region(6, 4, 14, 13, 7); /* rec toggle */
add_region(10, 3, 4, 56, 7); /* re-scroll current channel name */
/* setup up/down signal handler */
create_pid_file();
signal(SIGUSR1, (void *) signal_catch);
signal(SIGUSR2, (void *) signal_catch);
while (true) {
if (button_pressed || slider_pressed || (XPending(display) > 0)) {
XNextEvent(display, &event);
switch (event.type) {
case KeyPress:
if (key_press_event(&event.xkey))
idle_loop = 0;
break;
case Expose:
redraw_window();
break;
case ButtonPress:
button_press_event(&event.xbutton);
idle_loop = 0;
break;
case ButtonRelease:
button_release_event(&event.xbutton);
idle_loop = 0;
break;
case MotionNotify:
/* process cursor change, or drag events */
motion_event(&event.xmotion);
idle_loop = 0;
break;
case LeaveNotify:
/* go back to standard cursor */
if ((!button_pressed) && (!slider_pressed))
set_cursor(NORMAL_CURSOR);
break;
case DestroyNotify:
XCloseDisplay(display);
return EXIT_SUCCESS;
default:
break;
}
} else {
usleep(100000);
scroll_text(3, 4, 57, false);
/* rescroll message after some delay */
if (idle_loop++ > 256) {
scroll_text(3, 4, 57, true);
idle_loop = 0;
}
/* get rid of OSD after a few seconds of idle */
if ((idle_loop > 15) && osd_mapped() && !button_pressed) {
unmap_osd();
idle_loop = 0;
}
if (mixer_is_changed())
ui_update();
}
}
return EXIT_SUCCESS;
}
static void signal_catch(int sig)
{
switch (sig) {
case SIGUSR1:
mixer_set_volume_rel(config.scrollstep);
if (!osd_mapped())
map_osd();
if (osd_mapped())
update_osd(mixer_get_volume(), false);
ui_update();
idle_loop = 0;
break;
case SIGUSR2:
mixer_set_volume_rel(-config.scrollstep);
if (!osd_mapped())
map_osd();
if (osd_mapped())
update_osd(mixer_get_volume(), false);
ui_update();
idle_loop = 0;
break;
}
}
static void button_press_event(XButtonEvent *event)
{
double button_press_time = get_current_time();
int x = event->x;
int y = event->y;
bool double_click = false;
/* handle wheel scrolling to adjust volume */
if (config.mousewheel) {
if (event->button == config.wheel_button_up) {
mixer_set_volume_rel(config.scrollstep);
if (!osd_mapped())
map_osd();
if (osd_mapped())
update_osd(mixer_get_volume(), false);
ui_update();
return;
}
if (event->button == config.wheel_button_down) {
mixer_set_volume_rel(-config.scrollstep);
if (!osd_mapped())
map_osd();
if (osd_mapped())
update_osd(mixer_get_volume(), false);
ui_update();
return;
}
}
if ((button_press_time - prev_button_press_time) <= 0.5) {
double_click = true;
prev_button_press_time = 0.0;
} else
prev_button_press_time = button_press_time;
switch (check_region(x, y)) {
case 1: /* on knob */
button_pressed = true;
slider_pressed = false;
mouse_drag_home_x = x;
mouse_drag_home_y = y;
if (double_click) {
mixer_toggle_mute();
ui_update();
}
break;
case 2: /* on slider */
button_pressed = false;
slider_pressed = true;
mouse_drag_home_x = x;
mouse_drag_home_y = y;
if (double_click) {
mixer_set_balance(0.0);
ui_update();
}
break;
case 3: /* previous channel */
mixer_set_channel_rel(-1);
blit_string(config.scrolltext ? mixer_get_channel_name() : mixer_get_short_name());
scroll_text(3, 4, 57, true);
unmap_osd();
map_osd();
ui_update();
break;
case 4: /* next channel */
mixer_set_channel_rel(1);
blit_string(config.scrolltext ? mixer_get_channel_name() : mixer_get_short_name());
scroll_text(3, 4, 57, true);
unmap_osd();
map_osd();
ui_update();
break;
case 5: /* toggle mute */
mixer_toggle_mute();
ui_update();
break;
case 6: /* toggle rec */
mixer_toggle_rec();
ui_update();
break;
case 10:
scroll_text(3, 4, 57, true);
break;
default:
printf("unknown region pressed\n");
break;
}
}
static int key_press_event(XKeyEvent *event)
{
if (event->keycode == mmkeys.raise_volume) {
mixer_set_volume_rel(config.scrollstep);
if (!osd_mapped())
map_osd();
if (osd_mapped())
update_osd(mixer_get_volume(), false);
ui_update();
return 1;
}
if (event->keycode == mmkeys.lower_volume) {
mixer_set_volume_rel(-config.scrollstep);
if (!osd_mapped())
map_osd();
if (osd_mapped())
update_osd(mixer_get_volume(), false);
ui_update();
return 1;
}
if (event->keycode == mmkeys.mute) {
mixer_toggle_mute();
ui_update();
return 1;
}
/* Ignore other keys */
return 0;
}
static void button_release_event(XButtonEvent *event)
{
int x = event->x;
int y = event->y;
int region;
region = check_region(x, y);
if (region == 1)
set_cursor(HAND_CURSOR);
button_pressed = false;
slider_pressed = false;
}
static void motion_event(XMotionEvent *event)
{
int x = event->x;
int y = event->y;
int region;
if ((x == mouse_drag_home_x) && (y == mouse_drag_home_y))
return;
region = check_region(x, y);
if (button_pressed) {
if (y != mouse_drag_home_y) {
float delta;
set_cursor(NULL_CURSOR);
delta = (float)(mouse_drag_home_y - y) / display_height;
knob_turn(delta);
if (!osd_mapped())
map_osd();
if (osd_mapped())
update_osd(mixer_get_volume(), false);
}
XWarpPointer(display, None, event->window, x, y, 0, 0,
mouse_drag_home_x, mouse_drag_home_y);
return;
}
if (slider_pressed) {
if (x != mouse_drag_home_x) {
float delta;
set_cursor(NULL_CURSOR);
delta = (float)(x - mouse_drag_home_x) / display_width;
slider_move(delta);
}
XWarpPointer(display, None, event->window, x, y, 0, 0,
mouse_drag_home_x, mouse_drag_home_y);
return;
}
if (region == 1)
set_cursor(HAND_CURSOR);
else if (region == 2)
set_cursor(BAR_CURSOR);
else
set_cursor(NORMAL_CURSOR);
}
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