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[x11] Implement input names

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Mouse axis and button names are handled internally (and thus
case-insensitive).

Key names are handled by X11. Case-sensitivity is currently determined
by Xlib.
This commit is contained in:
Bill Currie 2021-11-18 13:01:33 +09:00
parent 84f746dab2
commit 793914718f
1 changed files with 104 additions and 3 deletions
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107
libs/video/targets/in_x11.c
View file

@ -49,6 +49,7 @@
#include <X11/Xlib.h>
#include <X11/keysym.h>
#include <X11/XF86keysym.h>
#include <X11/XKBlib.h>
#include <X11/Sunkeysym.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
@ -97,18 +98,29 @@ static in_buttoninfo_t x11_key_buttons[256];
static in_axisinfo_t x11_mouse_axes[2];
// FIXME assume up to 32 mouse buttons
static in_buttoninfo_t x11_mouse_buttons[32];
static const char *x11_mouse_axis_names[] = {"M_X", "M_Y"};
static const char *x11_mouse_button_names[] = {
"M_BUTTON1", "M_BUTTON2", "M_BUTTON3", "M_WHEEL_UP",
"M_WHEEL_DOWN", "M_BUTTON6", "M_BUTTON7", "M_BUTTON8",
"M_BUTTON9", "M_BUTTON10", "M_BUTTON11", "M_BUTTON12",
"M_BUTTON13", "M_BUTTON14", "M_BUTTON15", "M_BUTTON16",
"M_BUTTON17", "M_BUTTON18", "M_BUTTON19", "M_BUTTON20",
"M_BUTTON21", "M_BUTTON22", "M_BUTTON23", "M_BUTTON24",
"M_BUTTON25", "M_BUTTON26", "M_BUTTON27", "M_BUTTON28",
"M_BUTTON29", "M_BUTTON30", "M_BUTTON31", "M_BUTTON32",
};
#define infosize(x) (sizeof (x) / sizeof (x[0]))
#define SIZE(x) (sizeof (x) / sizeof (x[0]))
static x11_device_t x11_keyboard_device = {
"core:keyboard",
0, infosize (x11_key_buttons),
0, SIZE (x11_key_buttons),
0, x11_key_buttons,
};
static x11_device_t x11_mouse_device = {
"core:mouse",
infosize (x11_mouse_axes), infosize (x11_mouse_buttons),
SIZE (x11_mouse_axes), SIZE (x11_mouse_buttons),
x11_mouse_axes, x11_mouse_buttons,
};
@ -935,6 +947,90 @@ in_x11_button_info (void *data, void *device, in_buttoninfo_t *buttons,
memcpy (buttons, dev->buttons, *numbuttons * sizeof (in_buttoninfo_t));
}
static const char *
in_x11_get_axis_name (void *data, void *device, int axis_num)
{
x11_device_t *dev = device;
const char *name = 0;
if (dev == &x11_keyboard_device) {
// keyboards don't have axes...
} else if (dev == &x11_mouse_device) {
if ((unsigned) axis_num < SIZE (x11_mouse_axis_names)) {
name = x11_mouse_axis_names[axis_num];
}
}
return name;
}
static const char *
in_x11_get_button_name (void *data, void *device, int button_num)
{
x11_device_t *dev = device;
const char *name = 0;
if (dev == &x11_keyboard_device) {
// X11 protocol supports only 256 keys. The key codes are the AT scan
// codes offset by 8 (so Esc is 9 instead of 1).
KeyCode keycode = (button_num + 8) & 0xff;
KeySym keysym = XkbKeycodeToKeysym (x_disp, keycode, 0, 0);
if (keysym != NoSymbol) {
name = XKeysymToString (keysym);
}
} else if (dev == &x11_mouse_device) {
if ((unsigned) button_num < SIZE (x11_mouse_button_names)) {
name = x11_mouse_button_names[button_num];
}
}
return name;
}
static int
in_x11_get_axis_num (void *data, void *device, const char *axis_name)
{
x11_device_t *dev = device;
int num = -1;
if (dev == &x11_keyboard_device) {
// keyboards don't have axes...
} else if (dev == &x11_mouse_device) {
for (size_t i = 0; i < SIZE (x11_mouse_axis_names); i++) {
if (strcasecmp (axis_name, x11_mouse_axis_names[i]) == 0) {
num = i;
break;
}
}
}
return num;
}
static int
in_x11_get_button_num (void *data, void *device, const char *button_name)
{
x11_device_t *dev = device;
int num = -1;
if (dev == &x11_keyboard_device) {
KeySym keysym = XStringToKeysym (button_name);
if (keysym != NoSymbol) {
KeyCode keycode = XKeysymToKeycode (x_disp, keysym);
if (keycode != 0) {
// X11 protocol supports only 256 keys. The key codes are the
// AT scan codes offset by 8 (so Esc is 9 instead of 1).
num = (keycode - 8) & 0xff;
}
}
} else if (dev == &x11_mouse_device) {
for (size_t i = 0; i < SIZE (x11_mouse_button_names); i++) {
if (strcasecmp (button_name, x11_mouse_button_names[i]) == 0) {
num = i;
break;
}
}
}
return num;
}
static void
in_x11_shutdown (void *data)
{
@ -1062,6 +1158,11 @@ static in_driver_t in_x11_driver = {
.axis_info = in_x11_axis_info,
.button_info = in_x11_button_info,
.get_axis_name = in_x11_get_axis_name,
.get_button_name = in_x11_get_button_name,
.get_axis_num = in_x11_get_axis_num,
.get_button_num = in_x11_get_button_num,
};
static void __attribute__((constructor))