mirror of
https://github.com/gnif/LookingGlass.git
synced 2024-12-23 06:11:46 +00:00
e658c2e0a2
This change alters the small square dot cursor to a more visible 16x16 cursor for X11. A new option `spice:largeDotCursor` can be set to use an alternative 32x32 cursor for the vision impaired.
105 lines
2.2 KiB
C
105 lines
2.2 KiB
C
/**
|
|
* Looking Glass
|
|
* Copyright © 2017-2023 The Looking Glass Authors
|
|
* 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
|
|
*/
|
|
|
|
#include "cursor.h"
|
|
#include "common/util.h"
|
|
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
struct MemFile
|
|
{
|
|
const char * data;
|
|
int size;
|
|
int pos;
|
|
};
|
|
|
|
static int x11cursor_read(XcursorFile *file, unsigned char * buf, int len)
|
|
{
|
|
struct MemFile * f = (struct MemFile *)file->closure;
|
|
|
|
if (f->pos == f->size)
|
|
return 0;
|
|
|
|
len = min(f->size - f->pos, len);
|
|
memcpy(buf, f->data + f->pos, len);
|
|
f->pos += len;
|
|
|
|
return len;
|
|
}
|
|
|
|
static int x11cursor_write(XcursorFile *file, unsigned char * buf, int len)
|
|
{
|
|
errno = -EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
static int x11cursor_seek(XcursorFile *file, long offset, int whence)
|
|
{
|
|
struct MemFile * f = (struct MemFile *)file->closure;
|
|
long target;
|
|
|
|
switch(whence)
|
|
{
|
|
case SEEK_SET:
|
|
target = offset;
|
|
break;
|
|
|
|
case SEEK_CUR:
|
|
target = f->pos + offset;
|
|
break;
|
|
|
|
case SEEK_END:
|
|
target = f->size + offset;
|
|
break;
|
|
|
|
default:
|
|
errno = -EINVAL;
|
|
return -1;
|
|
}
|
|
|
|
if (target < 0 || target > f->size)
|
|
{
|
|
errno = -EINVAL;
|
|
return -1;
|
|
}
|
|
f->pos = target;
|
|
return target;
|
|
}
|
|
|
|
XcursorImages * x11cursor_load(const char * cursor, int size)
|
|
{
|
|
struct MemFile closure =
|
|
{
|
|
.data = cursor,
|
|
.size = size,
|
|
.pos = 0
|
|
};
|
|
|
|
XcursorFile f =
|
|
{
|
|
.closure = &closure,
|
|
.read = x11cursor_read,
|
|
.write = x11cursor_write,
|
|
.seek = x11cursor_seek
|
|
};
|
|
|
|
return XcursorXcFileLoadAllImages(&f);
|
|
}
|