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 "ui/qemu-spice.h"
  24#include "ui/console.h"
  25#include "keymaps.h"
  26#include "ui/input.h"
  27
  28/* keyboard bits */
  29
  30typedef struct QemuSpiceKbd {
  31    SpiceKbdInstance sin;
  32    int ledstate;
  33    bool emul0;
  34    size_t pauseseq;
  35} QemuSpiceKbd;
  36
  37static void kbd_push_key(SpiceKbdInstance *sin, uint8_t frag);
  38static uint8_t kbd_get_leds(SpiceKbdInstance *sin);
  39
  40static const SpiceKbdInterface kbd_interface = {
  41    .base.type          = SPICE_INTERFACE_KEYBOARD,
  42    .base.description   = "qemu keyboard",
  43    .base.major_version = SPICE_INTERFACE_KEYBOARD_MAJOR,
  44    .base.minor_version = SPICE_INTERFACE_KEYBOARD_MINOR,
  45    .push_scan_freg     = kbd_push_key,
  46    .get_leds           = kbd_get_leds,
  47};
  48
  49static void kbd_push_key(SpiceKbdInstance *sin, uint8_t scancode)
  50{
  51    static const uint8_t pauseseq[] = { 0xe1, 0x1d, 0x45, 0xe1, 0x9d, 0xc5 };
  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
  61    if (scancode == pauseseq[kbd->pauseseq]) {
  62        kbd->pauseseq++;
  63        if (kbd->pauseseq == G_N_ELEMENTS(pauseseq)) {
  64            qemu_input_event_send_key_qcode(NULL, Q_KEY_CODE_PAUSE, true);
  65            kbd->pauseseq = 0;
  66        }
  67        return;
  68    } else {
  69        kbd->pauseseq = 0;
  70    }
  71
  72    keycode = scancode & ~SCANCODE_UP;
  73    up = scancode & SCANCODE_UP;
  74    if (kbd->emul0) {
  75        kbd->emul0 = false;
  76        keycode |= SCANCODE_GREY;
  77    }
  78
  79    qemu_input_event_send_key_number(NULL, keycode, !up);
  80}
  81
  82static uint8_t kbd_get_leds(SpiceKbdInstance *sin)
  83{
  84    QemuSpiceKbd *kbd = container_of(sin, QemuSpiceKbd, sin);
  85    return kbd->ledstate;
  86}
  87
  88static void kbd_leds(void *opaque, int ledstate)
  89{
  90    QemuSpiceKbd *kbd = opaque;
  91
  92    kbd->ledstate = 0;
  93    if (ledstate & QEMU_SCROLL_LOCK_LED) {
  94        kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_SCROLL_LOCK;
  95    }
  96    if (ledstate & QEMU_NUM_LOCK_LED) {
  97        kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_NUM_LOCK;
  98    }
  99    if (ledstate & QEMU_CAPS_LOCK_LED) {
 100        kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_CAPS_LOCK;
 101    }
 102    spice_server_kbd_leds(&kbd->sin, kbd->ledstate);
 103}
 104
 105/* mouse bits */
 106
 107typedef struct QemuSpicePointer {
 108    SpiceMouseInstance  mouse;
 109    SpiceTabletInstance tablet;
 110    int width, height;
 111    uint32_t last_bmask;
 112    Notifier mouse_mode;
 113    bool absolute;
 114} QemuSpicePointer;
 115
 116static void spice_update_buttons(QemuSpicePointer *pointer,
 117                                 int wheel, uint32_t button_mask)
 118{
 119    static uint32_t bmap[INPUT_BUTTON__MAX] = {
 120        [INPUT_BUTTON_LEFT]        = 0x01,
 121        [INPUT_BUTTON_MIDDLE]      = 0x04,
 122        [INPUT_BUTTON_RIGHT]       = 0x02,
 123        [INPUT_BUTTON_WHEEL_UP]    = 0x10,
 124        [INPUT_BUTTON_WHEEL_DOWN]  = 0x20,
 125        [INPUT_BUTTON_SIDE]        = 0x40,
 126        [INPUT_BUTTON_EXTRA]       = 0x80,
 127    };
 128
 129    if (wheel < 0) {
 130        button_mask |= 0x10;
 131    }
 132    if (wheel > 0) {
 133        button_mask |= 0x20;
 134    }
 135
 136    if (pointer->last_bmask == button_mask) {
 137        return;
 138    }
 139    qemu_input_update_buttons(NULL, bmap, pointer->last_bmask, button_mask);
 140    pointer->last_bmask = button_mask;
 141}
 142
 143static void mouse_motion(SpiceMouseInstance *sin, int dx, int dy, int dz,
 144                         uint32_t buttons_state)
 145{
 146    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, mouse);
 147    spice_update_buttons(pointer, dz, buttons_state);
 148    qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
 149    qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
 150    qemu_input_event_sync();
 151}
 152
 153static void mouse_buttons(SpiceMouseInstance *sin, uint32_t buttons_state)
 154{
 155    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, mouse);
 156    spice_update_buttons(pointer, 0, buttons_state);
 157    qemu_input_event_sync();
 158}
 159
 160static const SpiceMouseInterface mouse_interface = {
 161    .base.type          = SPICE_INTERFACE_MOUSE,
 162    .base.description   = "mouse",
 163    .base.major_version = SPICE_INTERFACE_MOUSE_MAJOR,
 164    .base.minor_version = SPICE_INTERFACE_MOUSE_MINOR,
 165    .motion             = mouse_motion,
 166    .buttons            = mouse_buttons,
 167};
 168
 169static void tablet_set_logical_size(SpiceTabletInstance* sin, int width, int height)
 170{
 171    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
 172
 173    if (height < 16) {
 174        height = 16;
 175    }
 176    if (width < 16) {
 177        width = 16;
 178    }
 179    pointer->width  = width;
 180    pointer->height = height;
 181}
 182
 183static void tablet_position(SpiceTabletInstance* sin, int x, int y,
 184                            uint32_t buttons_state)
 185{
 186    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
 187
 188    spice_update_buttons(pointer, 0, buttons_state);
 189    qemu_input_queue_abs(NULL, INPUT_AXIS_X, x, 0, pointer->width);
 190    qemu_input_queue_abs(NULL, INPUT_AXIS_Y, y, 0, pointer->height);
 191    qemu_input_event_sync();
 192}
 193
 194
 195static void tablet_wheel(SpiceTabletInstance* sin, int wheel,
 196                         uint32_t buttons_state)
 197{
 198    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
 199
 200    spice_update_buttons(pointer, wheel, buttons_state);
 201    qemu_input_event_sync();
 202}
 203
 204static void tablet_buttons(SpiceTabletInstance *sin,
 205                           uint32_t buttons_state)
 206{
 207    QemuSpicePointer *pointer = container_of(sin, QemuSpicePointer, tablet);
 208
 209    spice_update_buttons(pointer, 0, buttons_state);
 210    qemu_input_event_sync();
 211}
 212
 213static const SpiceTabletInterface tablet_interface = {
 214    .base.type          = SPICE_INTERFACE_TABLET,
 215    .base.description   = "tablet",
 216    .base.major_version = SPICE_INTERFACE_TABLET_MAJOR,
 217    .base.minor_version = SPICE_INTERFACE_TABLET_MINOR,
 218    .set_logical_size   = tablet_set_logical_size,
 219    .position           = tablet_position,
 220    .wheel              = tablet_wheel,
 221    .buttons            = tablet_buttons,
 222};
 223
 224static void mouse_mode_notifier(Notifier *notifier, void *data)
 225{
 226    QemuSpicePointer *pointer = container_of(notifier, QemuSpicePointer, mouse_mode);
 227    bool is_absolute  = qemu_input_is_absolute();
 228
 229    if (pointer->absolute == is_absolute) {
 230        return;
 231    }
 232
 233    if (is_absolute) {
 234        qemu_spice.add_interface(&pointer->tablet.base);
 235    } else {
 236        spice_server_remove_interface(&pointer->tablet.base);
 237    }
 238    pointer->absolute = is_absolute;
 239}
 240
 241void qemu_spice_input_init(void)
 242{
 243    QemuSpiceKbd *kbd;
 244    QemuSpicePointer *pointer;
 245
 246    kbd = g_malloc0(sizeof(*kbd));
 247    kbd->sin.base.sif = &kbd_interface.base;
 248    qemu_spice.add_interface(&kbd->sin.base);
 249    qemu_add_led_event_handler(kbd_leds, kbd);
 250
 251    pointer = g_malloc0(sizeof(*pointer));
 252    pointer->mouse.base.sif  = &mouse_interface.base;
 253    pointer->tablet.base.sif = &tablet_interface.base;
 254    qemu_spice.add_interface(&pointer->mouse.base);
 255
 256    pointer->absolute = false;
 257    pointer->mouse_mode.notify = mouse_mode_notifier;
 258    qemu_add_mouse_mode_change_notifier(&pointer->mouse_mode);
 259    mouse_mode_notifier(&pointer->mouse_mode, NULL);
 260}
 261