qemu/ui/spice-input.c
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   1/*
   2 * Copyright (C) 2010 Red Hat, Inc.
   3 *
   4 * This program is free software; you can redistribute it and/or
   5 * modify it under the terms of the GNU General Public License as
   6 * published by the Free Software Foundation; either version 2 or
   7 * (at your option) version 3 of the License.
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  16 */
  17
  18#include <stdlib.h>
  19#include <stdio.h>
  20#include <stdbool.h>
  21#include <string.h>
  22
  23#include <spice.h>
  24#include <spice/enums.h>
  25
  26#include "qemu-common.h"
  27#include "ui/qemu-spice.h"
  28#include "ui/console.h"
  29#include "ui/keymaps.h"
  30#include "ui/input.h"
  31
  32/* keyboard bits */
  33
  34typedef struct QemuSpiceKbd {
  35    SpiceKbdInstance sin;
  36    int ledstate;
  37    bool emul0;
  38} QemuSpiceKbd;
  39
  40static void kbd_push_key(SpiceKbdInstance *sin, uint8_t frag);
  41static uint8_t kbd_get_leds(SpiceKbdInstance *sin);
  42static void kbd_leds(void *opaque, int l);
  43
  44static const SpiceKbdInterface kbd_interface = {
  45    .base.type          = SPICE_INTERFACE_KEYBOARD,
  46    .base.description   = "qemu keyboard",
  47    .base.major_version = SPICE_INTERFACE_KEYBOARD_MAJOR,
  48    .base.minor_version = SPICE_INTERFACE_KEYBOARD_MINOR,
  49    .push_scan_freg     = kbd_push_key,
  50    .get_leds           = kbd_get_leds,
  51};
  52
  53static void kbd_push_key(SpiceKbdInstance *sin, uint8_t scancode)
  54{
  55    QemuSpiceKbd *kbd = container_of(sin, QemuSpiceKbd, sin);
  56    int keycode;
  57    bool up;
  58
  59    if (scancode == SCANCODE_EMUL0) {
  60        kbd->emul0 = true;
  61        return;
  62    }
  63    keycode = scancode & ~SCANCODE_UP;
  64    up = scancode & SCANCODE_UP;
  65    if (kbd->emul0) {
  66        kbd->emul0 = false;
  67        keycode |= SCANCODE_GREY;
  68    }
  69
  70    qemu_input_event_send_key_number(NULL, keycode, !up);
  71}
  72
  73static uint8_t kbd_get_leds(SpiceKbdInstance *sin)
  74{
  75    QemuSpiceKbd *kbd = container_of(sin, QemuSpiceKbd, sin);
  76    return kbd->ledstate;
  77}
  78
  79static void kbd_leds(void *opaque, int ledstate)
  80{
  81    QemuSpiceKbd *kbd = opaque;
  82
  83    kbd->ledstate = 0;
  84    if (ledstate & QEMU_SCROLL_LOCK_LED) {
  85        kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_SCROLL_LOCK;
  86    }
  87    if (ledstate & QEMU_NUM_LOCK_LED) {
  88        kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_NUM_LOCK;
  89    }
  90    if (ledstate & QEMU_CAPS_LOCK_LED) {
  91        kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_CAPS_LOCK;
  92    }
  93    spice_server_kbd_leds(&kbd->sin, ledstate);
  94}
  95
  96/* mouse bits */
  97
  98typedef struct QemuSpicePointer {
  99    SpiceMouseInstance  mouse;
 100    SpiceTabletInstance tablet;
 101    int width, height;
 102    uint32_t last_bmask;
 103    Notifier mouse_mode;
 104    bool absolute;
 105} QemuSpicePointer;
 106
 107static void spice_update_buttons(QemuSpicePointer *pointer,
 108                                 int wheel, uint32_t button_mask)
 109{
 110    static uint32_t bmap[INPUT_BUTTON_MAX] = {
 111        [INPUT_BUTTON_LEFT]        = 0x01,
 112        [INPUT_BUTTON_MIDDLE]      = 0x04,
 113        [INPUT_BUTTON_RIGHT]       = 0x02,
 114        [INPUT_BUTTON_WHEEL_UP]    = 0x10,
 115        [INPUT_BUTTON_WHEEL_DOWN]  = 0x20,
 116    };
 117
 118    if (wheel < 0) {
 119        button_mask |= 0x10;
 120    }
 121    if (wheel > 0) {
 122        button_mask |= 0x20;
 123    }
 124
 125    if (pointer->last_bmask == button_mask) {
 126        return;
 127    }
 128    qemu_input_update_buttons(NULL, bmap, pointer->last_bmask, button_mask);
 129    pointer->last_bmask = button_mask;
 130}
 131
 132static void mouse_motion(SpiceMouseInstance *sin, int dx, int dy, int dz,
 133                         uint32_t buttons_state)
 134{
 135    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, mouse);
 136    spice_update_buttons(pointer, dz, buttons_state);
 137    qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
 138    qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
 139    qemu_input_event_sync();
 140}
 141
 142static void mouse_buttons(SpiceMouseInstance *sin, uint32_t buttons_state)
 143{
 144    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, mouse);
 145    spice_update_buttons(pointer, 0, buttons_state);
 146    qemu_input_event_sync();
 147}
 148
 149static const SpiceMouseInterface mouse_interface = {
 150    .base.type          = SPICE_INTERFACE_MOUSE,
 151    .base.description   = "mouse",
 152    .base.major_version = SPICE_INTERFACE_MOUSE_MAJOR,
 153    .base.minor_version = SPICE_INTERFACE_MOUSE_MINOR,
 154    .motion             = mouse_motion,
 155    .buttons            = mouse_buttons,
 156};
 157
 158static void tablet_set_logical_size(SpiceTabletInstance* sin, int width, int height)
 159{
 160    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
 161
 162    if (height < 16) {
 163        height = 16;
 164    }
 165    if (width < 16) {
 166        width = 16;
 167    }
 168    pointer->width  = width;
 169    pointer->height = height;
 170}
 171
 172static void tablet_position(SpiceTabletInstance* sin, int x, int y,
 173                            uint32_t buttons_state)
 174{
 175    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
 176
 177    spice_update_buttons(pointer, 0, buttons_state);
 178    qemu_input_queue_abs(NULL, INPUT_AXIS_X, x, pointer->width);
 179    qemu_input_queue_abs(NULL, INPUT_AXIS_Y, y, pointer->height);
 180    qemu_input_event_sync();
 181}
 182
 183
 184static void tablet_wheel(SpiceTabletInstance* sin, int wheel,
 185                         uint32_t buttons_state)
 186{
 187    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
 188
 189    spice_update_buttons(pointer, wheel, buttons_state);
 190    qemu_input_event_sync();
 191}
 192
 193static void tablet_buttons(SpiceTabletInstance *sin,
 194                           uint32_t buttons_state)
 195{
 196    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
 197
 198    spice_update_buttons(pointer, 0, buttons_state);
 199    qemu_input_event_sync();
 200}
 201
 202static const SpiceTabletInterface tablet_interface = {
 203    .base.type          = SPICE_INTERFACE_TABLET,
 204    .base.description   = "tablet",
 205    .base.major_version = SPICE_INTERFACE_TABLET_MAJOR,
 206    .base.minor_version = SPICE_INTERFACE_TABLET_MINOR,
 207    .set_logical_size   = tablet_set_logical_size,
 208    .position           = tablet_position,
 209    .wheel              = tablet_wheel,
 210    .buttons            = tablet_buttons,
 211};
 212
 213static void mouse_mode_notifier(Notifier *notifier, void *data)
 214{
 215    QemuSpicePointer *pointer = container_of(notifier, QemuSpicePointer, mouse_mode);
 216    bool is_absolute  = qemu_input_is_absolute();
 217
 218    if (pointer->absolute == is_absolute) {
 219        return;
 220    }
 221
 222    if (is_absolute) {
 223        qemu_spice_add_interface(&pointer->tablet.base);
 224    } else {
 225        spice_server_remove_interface(&pointer->tablet.base);
 226    }
 227    pointer->absolute = is_absolute;
 228}
 229
 230void qemu_spice_input_init(void)
 231{
 232    QemuSpiceKbd *kbd;
 233    QemuSpicePointer *pointer;
 234
 235    kbd = g_malloc0(sizeof(*kbd));
 236    kbd->sin.base.sif = &kbd_interface.base;
 237    qemu_spice_add_interface(&kbd->sin.base);
 238    qemu_add_led_event_handler(kbd_leds, kbd);
 239
 240    pointer = g_malloc0(sizeof(*pointer));
 241    pointer->mouse.base.sif  = &mouse_interface.base;
 242    pointer->tablet.base.sif = &tablet_interface.base;
 243    qemu_spice_add_interface(&pointer->mouse.base);
 244
 245    pointer->absolute = false;
 246    pointer->mouse_mode.notify = mouse_mode_notifier;
 247    qemu_add_mouse_mode_change_notifier(&pointer->mouse_mode);
 248    mouse_mode_notifier(&pointer->mouse_mode, NULL);
 249}
 250