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authorPaolo Bonzini <pbonzini@redhat.com>2013-02-03 20:21:00 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2013-03-01 13:18:23 +0100
commit159b6e9f144c7afdf3ad95c29d1fede9626fa8b1 (patch)
tree4ad8c6bed22882acc92dee8fc6bdf0ea15089ae2 /backends/msmouse.c
parent288f1e3f87ec24abeac38399f175fe74243f7bc5 (diff)
downloadqemu-arm-159b6e9f144c7afdf3ad95c29d1fede9626fa8b1.tar.gz
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 <pbonzini@redhat.com>
Diffstat (limited to 'backends/msmouse.c')
-rw-r--r--backends/msmouse.c78
1 files changed, 78 insertions, 0 deletions
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 <stdlib.h>
+#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;
+}