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 "qemu/osdep.h"
  19
  20#include <spice.h>
  21#include <spice/enums.h>
  22
  23#include "qemu-common.h"
  24#include "ui/qemu-spice.h"
  25#include "ui/console.h"
  26#include "ui/keymaps.h"
  27#include "ui/input.h"
  28
  29/* keyboard bits */
  30
  31typedef struct QemuSpiceKbd {
  32    SpiceKbdInstance sin;
  33    int ledstate;
  34    bool emul0;
  35} QemuSpiceKbd;
  36
  37static void kbd_push_key(SpiceKbdInstance *sin, uint8_t frag);
  38static uint8_t kbd_get_leds(SpiceKbdInstance *sin);
  39static void kbd_leds(void *opaque, int l);
  40
  41static const SpiceKbdInterface kbd_interface = {
  42    .base.type          = SPICE_INTERFACE_KEYBOARD,
  43    .base.description   = "qemu keyboard",
  44    .base.major_version = SPICE_INTERFACE_KEYBOARD_MAJOR,
  45    .base.minor_version = SPICE_INTERFACE_KEYBOARD_MINOR,
  46    .push_scan_freg     = kbd_push_key,
  47    .get_leds           = kbd_get_leds,
  48};
  49
  50static void kbd_push_key(SpiceKbdInstance *sin, uint8_t scancode)
  51{
  52    QemuSpiceKbd *kbd = container_of(sin, QemuSpiceKbd, sin);
  53    int keycode;
  54    bool up;
  55
  56    if (scancode == SCANCODE_EMUL0) {
  57        kbd->emul0 = true;
  58        return;
  59    }
  60    keycode = scancode & ~SCANCODE_UP;
  61    up = scancode & SCANCODE_UP;
  62    if (kbd->emul0) {
  63        kbd->emul0 = false;
  64        keycode |= SCANCODE_GREY;
  65    }
  66
  67    qemu_input_event_send_key_number(NULL, keycode, !up);
  68}
  69
  70static uint8_t kbd_get_leds(SpiceKbdInstance *sin)
  71{
  72    QemuSpiceKbd *kbd = container_of(sin, QemuSpiceKbd, sin);
  73    return kbd->ledstate;
  74}
  75
  76static void kbd_leds(void *opaque, int ledstate)
  77{
  78    QemuSpiceKbd *kbd = opaque;
  79
  80    kbd->ledstate = 0;
  81    if (ledstate & QEMU_SCROLL_LOCK_LED) {
  82        kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_SCROLL_LOCK;
  83    }
  84    if (ledstate & QEMU_NUM_LOCK_LED) {
  85        kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_NUM_LOCK;
  86    }
  87    if (ledstate & QEMU_CAPS_LOCK_LED) {
  88        kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_CAPS_LOCK;
  89    }
  90    spice_server_kbd_leds(&kbd->sin, ledstate);
  91}
  92
  93/* mouse bits */
  94
  95typedef struct QemuSpicePointer {
  96    SpiceMouseInstance  mouse;
  97    SpiceTabletInstance tablet;
  98    int width, height;
  99    uint32_t last_bmask;
 100    Notifier mouse_mode;
 101    bool absolute;
 102} QemuSpicePointer;
 103
 104static void spice_update_buttons(QemuSpicePointer *pointer,
 105                                 int wheel, uint32_t button_mask)
 106{
 107    static uint32_t bmap[INPUT_BUTTON__MAX] = {
 108        [INPUT_BUTTON_LEFT]        = 0x01,
 109        [INPUT_BUTTON_MIDDLE]      = 0x04,
 110        [INPUT_BUTTON_RIGHT]       = 0x02,
 111        [INPUT_BUTTON_WHEEL_UP]    = 0x10,
 112        [INPUT_BUTTON_WHEEL_DOWN]  = 0x20,
 113    };
 114
 115    if (wheel < 0) {
 116        button_mask |= 0x10;
 117    }
 118    if (wheel > 0) {
 119        button_mask |= 0x20;
 120    }
 121
 122    if (pointer->last_bmask == button_mask) {
 123        return;
 124    }
 125    qemu_input_update_buttons(NULL, bmap, pointer->last_bmask, button_mask);
 126    pointer->last_bmask = button_mask;
 127}
 128
 129static void mouse_motion(SpiceMouseInstance *sin, int dx, int dy, int dz,
 130                         uint32_t buttons_state)
 131{
 132    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, mouse);
 133    spice_update_buttons(pointer, dz, buttons_state);
 134    qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
 135    qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
 136    qemu_input_event_sync();
 137}
 138
 139static void mouse_buttons(SpiceMouseInstance *sin, uint32_t buttons_state)
 140{
 141    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, mouse);
 142    spice_update_buttons(pointer, 0, buttons_state);
 143    qemu_input_event_sync();
 144}
 145
 146static const SpiceMouseInterface mouse_interface = {
 147    .base.type          = SPICE_INTERFACE_MOUSE,
 148    .base.description   = "mouse",
 149    .base.major_version = SPICE_INTERFACE_MOUSE_MAJOR,
 150    .base.minor_version = SPICE_INTERFACE_MOUSE_MINOR,
 151    .motion             = mouse_motion,
 152    .buttons            = mouse_buttons,
 153};
 154
 155static void tablet_set_logical_size(SpiceTabletInstance* sin, int width, int height)
 156{
 157    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
 158
 159    if (height < 16) {
 160        height = 16;
 161    }
 162    if (width < 16) {
 163        width = 16;
 164    }
 165    pointer->width  = width;
 166    pointer->height = height;
 167}
 168
 169static void tablet_position(SpiceTabletInstance* sin, int x, int y,
 170                            uint32_t buttons_state)
 171{
 172    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
 173
 174    spice_update_buttons(pointer, 0, buttons_state);
 175    qemu_input_queue_abs(NULL, INPUT_AXIS_X, x, pointer->width);
 176    qemu_input_queue_abs(NULL, INPUT_AXIS_Y, y, pointer->height);
 177    qemu_input_event_sync();
 178}
 179
 180
 181static void tablet_wheel(SpiceTabletInstance* sin, int wheel,
 182                         uint32_t buttons_state)
 183{
 184    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
 185
 186    spice_update_buttons(pointer, wheel, buttons_state);
 187    qemu_input_event_sync();
 188}
 189
 190static void tablet_buttons(SpiceTabletInstance *sin,
 191                           uint32_t buttons_state)
 192{
 193    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
 194
 195    spice_update_buttons(pointer, 0, buttons_state);
 196    qemu_input_event_sync();
 197}
 198
 199static const SpiceTabletInterface tablet_interface = {
 200    .base.type          = SPICE_INTERFACE_TABLET,
 201    .base.description   = "tablet",
 202    .base.major_version = SPICE_INTERFACE_TABLET_MAJOR,
 203    .base.minor_version = SPICE_INTERFACE_TABLET_MINOR,
 204    .set_logical_size   = tablet_set_logical_size,
 205    .position           = tablet_position,
 206    .wheel              = tablet_wheel,
 207    .buttons            = tablet_buttons,
 208};
 209
 210static void mouse_mode_notifier(Notifier *notifier, void *data)
 211{
 212    QemuSpicePointer *pointer = container_of(notifier, QemuSpicePointer, mouse_mode);
 213    bool is_absolute  = qemu_input_is_absolute();
 214
 215    if (pointer->absolute == is_absolute) {
 216        return;
 217    }
 218
 219    if (is_absolute) {
 220        qemu_spice_add_interface(&pointer->tablet.base);
 221    } else {
 222        spice_server_remove_interface(&pointer->tablet.base);
 223    }
 224    pointer->absolute = is_absolute;
 225}
 226
 227void qemu_spice_input_init(void)
 228{
 229    QemuSpiceKbd *kbd;
 230    QemuSpicePointer *pointer;
 231
 232    kbd = g_malloc0(sizeof(*kbd));
 233    kbd->sin.base.sif = &kbd_interface.base;
 234    qemu_spice_add_interface(&kbd->sin.base);
 235    qemu_add_led_event_handler(kbd_leds, kbd);
 236
 237    pointer = g_malloc0(sizeof(*pointer));
 238    pointer->mouse.base.sif  = &mouse_interface.base;
 239    pointer->tablet.base.sif = &tablet_interface.base;
 240    qemu_spice_add_interface(&pointer->mouse.base);
 241
 242    pointer->absolute = false;
 243    pointer->mouse_mode.notify = mouse_mode_notifier;
 244    qemu_add_mouse_mode_change_notifier(&pointer->mouse_mode);
 245    mouse_mode_notifier(&pointer->mouse_mode, NULL);
 246}
 247