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x11: added hotplug support for XInput2 devices

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This commit is contained in:
Sam Lantinga
2024-03-25 16:32:40 -07:00
parent f1f24b173c
commit 3dfc3b4c8d
4 changed files with 161 additions and 55 deletions
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7
src/video/x11/SDL_x11events.c
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@@ -29,6 +29,7 @@
#include <limits.h> /* For INT_MAX */
#include "SDL_x11video.h"
#include "SDL_x11pen.h"
#include "SDL_x11touch.h"
#include "SDL_x11xinput2.h"
#include "SDL_x11xfixes.h"
@@ -2033,6 +2034,12 @@ void X11_PumpEvents(SDL_VideoDevice *_this)
X11_FlashWindow(_this, data->windowlist[i]->window, SDL_FLASH_CANCEL);
}
}
if (data->xinput_hierarchy_changed) {
X11_InitPen(_this);
X11_Xinput2UpdateDevices(_this, SDL_FALSE);
data->xinput_hierarchy_changed = SDL_FALSE;
}
}
int X11_SuspendScreenSaver(SDL_VideoDevice *_this)

1
src/video/x11/SDL_x11video.h
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@@ -111,6 +111,7 @@ struct SDL_VideoData
Uint32 global_mouse_buttons;
SDL_XInput2DeviceInfo *mouse_device_info;
SDL_bool xinput_hierarchy_changed;
int xrandr_event_base;

207
src/video/x11/SDL_x11xinput2.c
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@@ -95,59 +95,6 @@ static SDL_Window *xinput2_get_sdlwindow(SDL_VideoData *videodata, Window window
return windowdata ? windowdata->window : NULL;
}
static void xinput2_init_device_list(SDL_VideoData *videodata)
{
XIDeviceInfo *info;
int ndevices;
info = X11_XIQueryDevice(videodata->display, XIAllDevices, &ndevices);
for (int i = 0; i < ndevices; i++) {
XIDeviceInfo *dev = &info[i];
switch (dev->use) {
case XIMasterKeyboard:
SDL_AddKeyboard((SDL_KeyboardID)dev->deviceid, dev->name, SDL_FALSE);
break;
case XISlaveKeyboard:
SDL_AddKeyboard((SDL_KeyboardID)dev->deviceid, dev->name, SDL_FALSE);
break;
case XIMasterPointer:
SDL_AddMouse((SDL_MouseID)dev->deviceid, dev->name, SDL_FALSE);
break;
case XISlavePointer:
SDL_AddMouse((SDL_MouseID)dev->deviceid, dev->name, SDL_FALSE);
break;
default:
break;
}
#ifdef SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH
for (int j = 0; j < dev->num_classes; j++) {
SDL_TouchID touchId;
SDL_TouchDeviceType touchType;
XIAnyClassInfo *class = dev->classes[j];
XITouchClassInfo *t = (XITouchClassInfo *)class;
/* Only touch devices */
if (class->type != XITouchClass) {
continue;
}
if (t->mode == XIDependentTouch) {
touchType = SDL_TOUCH_DEVICE_INDIRECT_RELATIVE;
} else { /* XIDirectTouch */
touchType = SDL_TOUCH_DEVICE_DIRECT;
}
touchId = t->sourceid;
SDL_AddTouch(touchId, touchType, dev->name);
}
#endif // SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH
}
X11_XIFreeDeviceInfo(info);
}
#ifdef SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH
static void xinput2_normalize_touch_coordinates(SDL_Window *window, double in_x, double in_y, float *out_x, float *out_y)
{
@@ -239,7 +186,7 @@ SDL_bool X11_InitXinput2(SDL_VideoDevice *_this)
XISetMask(mask, XI_HierarchyChanged);
X11_XISelectEvents(data->display, DefaultRootWindow(data->display), &eventmask, 1);
xinput2_init_device_list(data);
X11_Xinput2UpdateDevices(_this, SDL_TRUE);
return SDL_TRUE;
#else
@@ -420,7 +367,7 @@ int X11_HandleXinput2Event(SDL_VideoDevice *_this, XGenericEventCookie *cookie)
xinput2_remove_device_info(videodata, hierev->info[i].deviceid);
}
}
X11_InitPen(_this);
videodata->xinput_hierarchy_changed = SDL_TRUE;
} break;
case XI_KeyPress:
@@ -735,4 +682,154 @@ void X11_Xinput2UngrabTouch(SDL_VideoDevice *_this, SDL_Window *window)
#endif
}
#ifdef SDL_VIDEO_DRIVER_X11_XINPUT2
static void AddDeviceID(Uint32 deviceID, Uint32 **list, int *count)
{
int new_count = (*count + 1);
Uint32 *new_list = (Uint32 *)SDL_realloc(*list, new_count * sizeof(*new_list));
if (!new_list) {
/* Oh well, we'll drop this one */
return;
}
new_list[new_count - 1] = deviceID;
*count = new_count;
*list = new_list;
}
static SDL_bool HasDeviceID(Uint32 deviceID, Uint32 *list, int count)
{
for (int i = 0; i < count; ++i) {
if (deviceID == list[i]) {
return SDL_TRUE;
}
}
return SDL_FALSE;
}
#endif // SDL_VIDEO_DRIVER_X11_XINPUT2
void X11_Xinput2UpdateDevices(SDL_VideoDevice *_this, SDL_bool initial_check)
{
#ifdef SDL_VIDEO_DRIVER_X11_XINPUT2
SDL_VideoData *data = _this->driverdata;
XIDeviceInfo *info;
int ndevices;
int old_keyboard_count = 0;
SDL_KeyboardID *old_keyboards = NULL;
int new_keyboard_count = 0;
SDL_KeyboardID *new_keyboards = NULL;
int old_mouse_count = 0;
SDL_MouseID *old_mice = NULL;
int new_mouse_count = 0;
SDL_MouseID *new_mice = NULL;
int old_touch_count = 0;
SDL_TouchID *old_touch_devices64 = NULL;
Uint32 *old_touch_devices = NULL;
int new_touch_count = 0;
Uint32 *new_touch_devices = NULL;
SDL_bool send_event = !initial_check;
info = X11_XIQueryDevice(data->display, XIAllDevices, &ndevices);
old_keyboards = SDL_GetKeyboards(&old_keyboard_count);
old_mice = SDL_GetMice(&old_mouse_count);
/* SDL_TouchID is 64-bit, but our helper functions take Uint32 */
old_touch_devices64 = SDL_GetTouchDevices(&old_touch_count);
if (&old_touch_count > 0) {
old_touch_devices = (Uint32 *)SDL_malloc(old_touch_count * sizeof(*old_touch_devices));
if (old_touch_devices) {
for (int i = 0; i < old_touch_count; ++i) {
old_touch_devices[i] = (Uint32)old_touch_devices64[i];
}
}
}
SDL_free(old_touch_devices64);
for (int i = 0; i < ndevices; i++) {
XIDeviceInfo *dev = &info[i];
switch (dev->use) {
case XIMasterKeyboard:
case XISlaveKeyboard:
{
SDL_KeyboardID keyboardID = (SDL_KeyboardID)dev->deviceid;
AddDeviceID(keyboardID, &new_keyboards, &new_keyboard_count);
if (!HasDeviceID(keyboardID, old_keyboards, old_keyboard_count)) {
SDL_AddKeyboard(keyboardID, dev->name, send_event);
}
}
break;
case XIMasterPointer:
case XISlavePointer:
{
SDL_MouseID mouseID = (SDL_MouseID)dev->deviceid;
AddDeviceID(mouseID, &new_mice, &new_mouse_count);
if (!HasDeviceID(mouseID, old_mice, old_mouse_count)) {
SDL_AddMouse(mouseID, dev->name, send_event);
}
}
break;
default:
break;
}
#ifdef SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH
for (int j = 0; j < dev->num_classes; j++) {
Uint32 touchID;
SDL_TouchDeviceType touchType;
XIAnyClassInfo *class = dev->classes[j];
XITouchClassInfo *t = (XITouchClassInfo *)class;
/* Only touch devices */
if (class->type != XITouchClass) {
continue;
}
touchID = (Uint32)t->sourceid;
AddDeviceID(touchID, &new_touch_devices, &new_touch_count);
if (!HasDeviceID(touchID, old_touch_devices, old_touch_count)) {
if (t->mode == XIDependentTouch) {
touchType = SDL_TOUCH_DEVICE_INDIRECT_RELATIVE;
} else { /* XIDirectTouch */
touchType = SDL_TOUCH_DEVICE_DIRECT;
}
SDL_AddTouch(touchID, touchType, dev->name);
}
}
#endif // SDL_VIDEO_DRIVER_X11_XINPUT2_SUPPORTS_MULTITOUCH
}
for (int i = old_keyboard_count; i--;) {
if (!HasDeviceID(old_keyboards[i], new_keyboards, new_keyboard_count)) {
SDL_RemoveKeyboard(old_keyboards[i]);
}
}
for (int i = old_mouse_count; i--;) {
if (!HasDeviceID(old_mice[i], new_mice, new_mouse_count)) {
SDL_RemoveMouse(old_mice[i]);
}
}
for (int i = old_touch_count; i--;) {
if (!HasDeviceID(old_touch_devices[i], new_touch_devices, new_touch_count)) {
SDL_DelTouch(old_touch_devices[i]);
}
}
SDL_free(old_keyboards);
SDL_free(new_keyboards);
SDL_free(old_mice);
SDL_free(new_mice);
SDL_free(old_touch_devices);
SDL_free(new_touch_devices);
X11_XIFreeDeviceInfo(info);
#endif // SDL_VIDEO_DRIVER_X11_XINPUT2
}
#endif /* SDL_VIDEO_DRIVER_X11 */

1
src/video/x11/SDL_x11xinput2.h
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@@ -39,5 +39,6 @@ extern void X11_Xinput2SelectTouch(SDL_VideoDevice *_this, SDL_Window *window);
extern void X11_Xinput2GrabTouch(SDL_VideoDevice *_this, SDL_Window *window);
extern void X11_Xinput2UngrabTouch(SDL_VideoDevice *_this, SDL_Window *window);
extern SDL_bool X11_Xinput2SelectMouseAndKeyboard(SDL_VideoDevice *_this, SDL_Window *window);
extern void X11_Xinput2UpdateDevices(SDL_VideoDevice *_this, SDL_bool initial_check);
#endif /* SDL_x11xinput2_h_ */