ui/spice-input.c

   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 "keymaps.h"
  27 #include "ui/input.h"
  28
  29 /* keyboard bits */
  30
  31 typedef struct QemuSpiceKbd {
  32     SpiceKbdInstance sin;
  33     int ledstate;
  34     bool emul0;
  35     size_t pauseseq;
  36 } QemuSpiceKbd;
  37
  38 static void kbd_push_key(SpiceKbdInstance *sin, uint8_t frag);
  39 static uint8_t kbd_get_leds(SpiceKbdInstance *sin);
  40 static void kbd_leds(void *opaque, int l);
  41
  42 static const SpiceKbdInterface kbd_interface = {
  43     .base.type          = SPICE_INTERFACE_KEYBOARD,
  44     .base.description   = "qemu keyboard",
  45     .base.major_version = SPICE_INTERFACE_KEYBOARD_MAJOR,
  46     .base.minor_version = SPICE_INTERFACE_KEYBOARD_MINOR,
  47     .push_scan_freg     = kbd_push_key,
  48     .get_leds           = kbd_get_leds,
  49 };
  50
  51 static void kbd_push_key(SpiceKbdInstance *sin, uint8_t scancode)
  52 {
  53     static const uint8_t pauseseq[] = { 0xe1, 0x1d, 0x45, 0xe1, 0x9d, 0xc5 };
  54     QemuSpiceKbd *kbd = container_of(sin, QemuSpiceKbd, sin);
  55     int keycode;
  56     bool up;
  57
  58     if (scancode == SCANCODE_EMUL0) {
  59         kbd->emul0 = true;
  60         return;
  61     }
  62
  63     if (scancode == pauseseq[kbd->pauseseq]) {
  64         kbd->pauseseq++;
  65         if (kbd->pauseseq == G_N_ELEMENTS(pauseseq)) {
  66             qemu_input_event_send_key_qcode(NULL, Q_KEY_CODE_PAUSE, true);
  67             kbd->pauseseq = 0;
  68         }
  69         return;
  70     } else {
  71         kbd->pauseseq = 0;
  72     }
  73
  74     keycode = scancode & ~SCANCODE_UP;
  75     up = scancode & SCANCODE_UP;
  76     if (kbd->emul0) {
  77         kbd->emul0 = false;
  78         keycode |= SCANCODE_GREY;
  79     }
  80
  81     qemu_input_event_send_key_number(NULL, keycode, !up);
  82 }
  83
  84 static uint8_t kbd_get_leds(SpiceKbdInstance *sin)
  85 {
  86     QemuSpiceKbd *kbd = container_of(sin, QemuSpiceKbd, sin);
  87     return kbd->ledstate;
  88 }
  89
  90 static void kbd_leds(void *opaque, int ledstate)
  91 {
  92     QemuSpiceKbd *kbd = opaque;
  93
  94     kbd->ledstate = 0;
  95     if (ledstate & QEMU_SCROLL_LOCK_LED) {
  96         kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_SCROLL_LOCK;
  97     }
  98     if (ledstate & QEMU_NUM_LOCK_LED) {
  99         kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_NUM_LOCK;
 100     }
 101     if (ledstate & QEMU_CAPS_LOCK_LED) {
 102         kbd->ledstate |= SPICE_KEYBOARD_MODIFIER_FLAGS_CAPS_LOCK;
 103     }
 104     spice_server_kbd_leds(&kbd->sin, kbd->ledstate);
 105 }
 106
 107 /* mouse bits */
 108
 109 typedef struct QemuSpicePointer {
 110     SpiceMouseInstance  mouse;
 111     SpiceTabletInstance tablet;
 112     int width, height;
 113     uint32_t last_bmask;
 114     Notifier mouse_mode;
 115     bool absolute;
 116 } QemuSpicePointer;
 117
 118 static void spice_update_buttons(QemuSpicePointer *pointer,
 119                                  int wheel, uint32_t button_mask)
 120 {
 121     static uint32_t bmap[INPUT_BUTTON__MAX] = {
 122         [INPUT_BUTTON_LEFT]        = 0x01,
 123         [INPUT_BUTTON_MIDDLE]      = 0x04,
 124         [INPUT_BUTTON_RIGHT]       = 0x02,
 125         [INPUT_BUTTON_WHEEL_UP]    = 0x10,
 126         [INPUT_BUTTON_WHEEL_DOWN]  = 0x20,
 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
 143 static 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
 153 static 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
 160 static 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
 169 static 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
 183 static 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
 195 static 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
 204 static 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
 213 static 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
 224 static 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
 241 void 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 }