From 159b6e9f144c7afdf3ad95c29d1fede9626fa8b1 Mon Sep 17 00:00:00 2001 From: Paolo Bonzini Date: Sun, 3 Feb 2013 20:21:00 +0100 Subject: hw: move char backends to backends/ Braille and msmouse support is in hw/, but it is not hardware. Move it to the backends/ directory. Signed-off-by: Paolo Bonzini --- backends/msmouse.c | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 backends/msmouse.c (limited to 'backends/msmouse.c') diff --git a/backends/msmouse.c b/backends/msmouse.c new file mode 100644 index 0000000000..bf2ff2aca8 --- /dev/null +++ b/backends/msmouse.c @@ -0,0 +1,78 @@ +/* + * QEMU Microsoft serial mouse emulation + * + * Copyright (c) 2008 Lubomir Rintel + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#include +#include "qemu-common.h" +#include "char/char.h" +#include "ui/console.h" +#include "char/msmouse.h" + +#define MSMOUSE_LO6(n) ((n) & 0x3f) +#define MSMOUSE_HI2(n) (((n) & 0xc0) >> 6) + +static void msmouse_event(void *opaque, + int dx, int dy, int dz, int buttons_state) +{ + CharDriverState *chr = (CharDriverState *)opaque; + + unsigned char bytes[4] = { 0x40, 0x00, 0x00, 0x00 }; + + /* Movement deltas */ + bytes[0] |= (MSMOUSE_HI2(dy) << 2) | MSMOUSE_HI2(dx); + bytes[1] |= MSMOUSE_LO6(dx); + bytes[2] |= MSMOUSE_LO6(dy); + + /* Buttons */ + bytes[0] |= (buttons_state & 0x01 ? 0x20 : 0x00); + bytes[0] |= (buttons_state & 0x02 ? 0x10 : 0x00); + bytes[3] |= (buttons_state & 0x04 ? 0x20 : 0x00); + + /* We always send the packet of, so that we do not have to keep track + of previous state of the middle button. This can potentially confuse + some very old drivers for two button mice though. */ + qemu_chr_be_write(chr, bytes, 4); +} + +static int msmouse_chr_write (struct CharDriverState *s, const uint8_t *buf, int len) +{ + /* Ignore writes to mouse port */ + return len; +} + +static void msmouse_chr_close (struct CharDriverState *chr) +{ + g_free (chr); +} + +CharDriverState *qemu_chr_open_msmouse(QemuOpts *opts) +{ + CharDriverState *chr; + + chr = g_malloc0(sizeof(CharDriverState)); + chr->chr_write = msmouse_chr_write; + chr->chr_close = msmouse_chr_close; + + qemu_add_mouse_event_handler(msmouse_event, chr, 0, "QEMU Microsoft Mouse"); + + return chr; +} -- cgit v1.2.3