qemu/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 <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
  34 typedef struct QemuSpiceKbd {
  35     SpiceKbdInstance sin;
  36     int ledstate;
  37     bool emul0;
  38 } QemuSpiceKbd;
  39
  40 static void kbd_push_key(SpiceKbdInstance *sin, uint8_t frag);
  41 static uint8_t kbd_get_leds(SpiceKbdInstance *sin);
  42 static void kbd_leds(void *opaque, int l);
  43
  44 static 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
  53 static 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
  73 static uint8_t kbd_get_leds(SpiceKbdInstance *sin)
  74 {
  75     QemuSpiceKbd *kbd = container_of(sin, QemuSpiceKbd, sin);
  76     return kbd->ledstate;
  77 }
  78
  79 static 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
  98 typedef 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
 107 static 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
 132 static 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
 142 static 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
 149 static 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
 158 static 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
 172 static 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
 184 static 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
 193 static 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
 202 static 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
 213 static 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
 230 void 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 }