mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-11-25 14:57:20 +00:00
ee380451ca
This mirrors the x11 implementation, allowing the pointer to move correctly into overlapping windows.
109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
/*
|
|
Looking Glass - KVM FrameRelay (KVMFR) Client
|
|
Copyright (C) 2021 Guanzhong Chen (quantum2048@gmail.com)
|
|
Copyright (C) 2021 Tudor Brindus (contact@tbrindus.ca)
|
|
https://looking-glass.io
|
|
|
|
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
|
|
*/
|
|
|
|
#define _GNU_SOURCE
|
|
#include "wayland.h"
|
|
|
|
#include <stdbool.h>
|
|
#include <string.h>
|
|
|
|
#include <errno.h>
|
|
#include <sys/mman.h>
|
|
#include <unistd.h>
|
|
#include <wayland-client.h>
|
|
|
|
#include "common/debug.h"
|
|
|
|
static const uint32_t cursorBitmap[] = {
|
|
0x000000, 0x000000, 0x000000, 0x000000,
|
|
0x000000, 0xFFFFFF, 0xFFFFFF, 0x000000,
|
|
0x000000, 0xFFFFFF, 0xFFFFFF, 0x000000,
|
|
0x000000, 0x000000, 0x000000, 0x000000,
|
|
};
|
|
|
|
static struct wl_buffer * createCursorBuffer(void)
|
|
{
|
|
int fd = memfd_create("lg-cursor", 0);
|
|
if (fd < 0)
|
|
{
|
|
DEBUG_ERROR("Failed to create cursor shared memory: %d", errno);
|
|
return NULL;
|
|
}
|
|
|
|
struct wl_buffer * result = NULL;
|
|
|
|
if (ftruncate(fd, sizeof cursorBitmap) < 0)
|
|
{
|
|
DEBUG_ERROR("Failed to ftruncate cursor shared memory: %d", errno);
|
|
goto fail;
|
|
}
|
|
|
|
void * shm_data = mmap(NULL, sizeof cursorBitmap, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
|
|
if (shm_data == MAP_FAILED)
|
|
{
|
|
DEBUG_ERROR("Failed to map memory for cursor: %d", errno);
|
|
goto fail;
|
|
}
|
|
|
|
struct wl_shm_pool * pool = wl_shm_create_pool(wlWm.shm, fd, sizeof cursorBitmap);
|
|
result = wl_shm_pool_create_buffer(pool, 0, 4, 4, 16, WL_SHM_FORMAT_XRGB8888);
|
|
wl_shm_pool_destroy(pool);
|
|
|
|
memcpy(shm_data, cursorBitmap, sizeof cursorBitmap);
|
|
munmap(shm_data, sizeof cursorBitmap);
|
|
|
|
fail:
|
|
close(fd);
|
|
return result;
|
|
}
|
|
|
|
bool waylandCursorInit(void)
|
|
{
|
|
if (!wlWm.compositor)
|
|
{
|
|
DEBUG_ERROR("Compositor missing wl_compositor, will not proceed");
|
|
return false;
|
|
}
|
|
|
|
wlWm.cursorBuffer = createCursorBuffer();
|
|
if (wlWm.cursorBuffer)
|
|
{
|
|
wlWm.cursor = wl_compositor_create_surface(wlWm.compositor);
|
|
wl_surface_attach(wlWm.cursor, wlWm.cursorBuffer, 0, 0);
|
|
wl_surface_commit(wlWm.cursor);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void waylandCursorFree(void)
|
|
{
|
|
if (wlWm.cursor)
|
|
wl_surface_destroy(wlWm.cursor);
|
|
if (wlWm.cursorBuffer)
|
|
wl_buffer_destroy(wlWm.cursorBuffer);
|
|
}
|
|
|
|
void waylandShowPointer(bool show)
|
|
{
|
|
wlWm.showPointer = show;
|
|
wl_pointer_set_cursor(wlWm.pointer, wlWm.pointerEnterSerial, show ? wlWm.cursor : NULL, 0, 0);
|
|
}
|