mirror of
https://github.com/gnif/LookingGlass.git
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495 lines
13 KiB
C
495 lines
13 KiB
C
/**
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* Looking Glass
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* Copyright (C) 2017-2021 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "wayland.h"
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#include <stdbool.h>
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#include <string.h>
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#include <unistd.h>
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#include <wayland-client.h>
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#include "app.h"
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#include "common/debug.h"
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// Mouse-handling listeners.
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static void pointerMotionHandler(void * data, struct wl_pointer * pointer,
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uint32_t serial, wl_fixed_t sxW, wl_fixed_t syW)
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{
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wlWm.cursorX = wl_fixed_to_double(sxW);
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wlWm.cursorY = wl_fixed_to_double(syW);
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app_updateCursorPos(wlWm.cursorX, wlWm.cursorY);
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if (!wlWm.warpSupport && !wlWm.relativePointer)
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app_handleMouseBasic();
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}
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static void pointerEnterHandler(void * data, struct wl_pointer * pointer,
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uint32_t serial, struct wl_surface * surface, wl_fixed_t sxW,
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wl_fixed_t syW)
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{
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if (surface != wlWm.surface)
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return;
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wlWm.pointerInSurface = true;
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app_handleEnterEvent(true);
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wl_pointer_set_cursor(pointer, serial, wlWm.showPointer ? wlWm.cursor : NULL, 0, 0);
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wlWm.pointerEnterSerial = serial;
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wlWm.cursorX = wl_fixed_to_double(sxW);
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wlWm.cursorY = wl_fixed_to_double(syW);
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app_updateCursorPos(wlWm.cursorX, wlWm.cursorY);
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if (wlWm.warpSupport)
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{
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app_handleMouseRelative(0.0, 0.0, 0.0, 0.0);
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return;
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}
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if (wlWm.relativePointer)
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return;
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app_resyncMouseBasic();
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app_handleMouseBasic();
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}
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static void pointerLeaveHandler(void * data, struct wl_pointer * pointer,
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uint32_t serial, struct wl_surface * surface)
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{
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if (surface != wlWm.surface)
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return;
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wlWm.pointerInSurface = false;
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app_handleEnterEvent(false);
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}
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static void pointerAxisHandler(void * data, struct wl_pointer * pointer,
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uint32_t serial, uint32_t axis, wl_fixed_t value)
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{
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int button = value > 0 ?
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5 /* SPICE_MOUSE_BUTTON_DOWN */ :
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4 /* SPICE_MOUSE_BUTTON_UP */;
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app_handleButtonPress(button);
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app_handleButtonRelease(button);
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}
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static int mapWaylandToSpiceButton(uint32_t button)
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{
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switch (button)
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{
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case BTN_LEFT:
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return 1; // SPICE_MOUSE_BUTTON_LEFT
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case BTN_MIDDLE:
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return 2; // SPICE_MOUSE_BUTTON_MIDDLE
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case BTN_RIGHT:
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return 3; // SPICE_MOUSE_BUTTON_RIGHT
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case BTN_SIDE:
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return 6; // SPICE_MOUSE_BUTTON_SIDE
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case BTN_EXTRA:
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return 7; // SPICE_MOUSE_BUTTON_EXTRA
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}
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return 0; // SPICE_MOUSE_BUTTON_INVALID
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}
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static void pointerButtonHandler(void *data, struct wl_pointer *pointer,
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uint32_t serial, uint32_t time, uint32_t button, uint32_t stateW)
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{
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button = mapWaylandToSpiceButton(button);
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if (stateW == WL_POINTER_BUTTON_STATE_PRESSED)
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app_handleButtonPress(button);
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else
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app_handleButtonRelease(button);
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}
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static const struct wl_pointer_listener pointerListener = {
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.enter = pointerEnterHandler,
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.leave = pointerLeaveHandler,
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.motion = pointerMotionHandler,
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.button = pointerButtonHandler,
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.axis = pointerAxisHandler,
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};
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static void relativePointerMotionHandler(void * data,
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struct zwp_relative_pointer_v1 *pointer, uint32_t timeHi, uint32_t timeLo,
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wl_fixed_t dxW, wl_fixed_t dyW, wl_fixed_t dxUnaccelW,
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wl_fixed_t dyUnaccelW)
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{
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wlWm.cursorX += wl_fixed_to_double(dxW);
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wlWm.cursorY += wl_fixed_to_double(dyW);
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app_updateCursorPos(wlWm.cursorX, wlWm.cursorY);
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app_handleMouseRelative(
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wl_fixed_to_double(dxW),
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wl_fixed_to_double(dyW),
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wl_fixed_to_double(dxUnaccelW),
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wl_fixed_to_double(dyUnaccelW));
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}
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static const struct zwp_relative_pointer_v1_listener relativePointerListener = {
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.relative_motion = relativePointerMotionHandler,
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};
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// Keyboard-handling listeners.
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static void keyboardKeymapHandler(void * data, struct wl_keyboard * keyboard,
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uint32_t format, int fd, uint32_t size)
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{
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close(fd);
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}
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static void keyboardEnterHandler(void * data, struct wl_keyboard * keyboard,
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uint32_t serial, struct wl_surface * surface, struct wl_array * keys)
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{
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if (surface != wlWm.surface)
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return;
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wlWm.focusedOnSurface = true;
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app_handleFocusEvent(true);
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wlWm.keyboardEnterSerial = serial;
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uint32_t * key;
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wl_array_for_each(key, keys)
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app_handleKeyPress(*key);
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}
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static void keyboardLeaveHandler(void * data, struct wl_keyboard * keyboard,
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uint32_t serial, struct wl_surface * surface)
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{
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if (surface != wlWm.surface)
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return;
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wlWm.focusedOnSurface = false;
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waylandCBInvalidate();
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app_handleFocusEvent(false);
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}
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static void keyboardKeyHandler(void * data, struct wl_keyboard * keyboard,
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uint32_t serial, uint32_t time, uint32_t key, uint32_t state)
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{
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if (!wlWm.focusedOnSurface)
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return;
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if (state == WL_KEYBOARD_KEY_STATE_PRESSED)
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app_handleKeyPress(key);
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else
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app_handleKeyRelease(key);
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}
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static void keyboardModifiersHandler(void * data,
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struct wl_keyboard * keyboard, uint32_t serial, uint32_t modsDepressed,
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uint32_t modsLatched, uint32_t modsLocked, uint32_t group)
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{
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// Do nothing.
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}
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static const struct wl_keyboard_listener keyboardListener = {
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.keymap = keyboardKeymapHandler,
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.enter = keyboardEnterHandler,
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.leave = keyboardLeaveHandler,
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.key = keyboardKeyHandler,
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.modifiers = keyboardModifiersHandler,
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};
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// Seat-handling listeners.
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static void handlePointerCapability(uint32_t capabilities)
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{
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bool hasPointer = capabilities & WL_SEAT_CAPABILITY_POINTER;
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if (!hasPointer && wlWm.pointer)
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{
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wl_pointer_destroy(wlWm.pointer);
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wlWm.pointer = NULL;
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}
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else if (hasPointer && !wlWm.pointer)
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{
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wlWm.pointer = wl_seat_get_pointer(wlWm.seat);
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wl_pointer_add_listener(wlWm.pointer, &pointerListener, NULL);
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}
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}
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static void handleKeyboardCapability(uint32_t capabilities)
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{
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bool hasKeyboard = capabilities & WL_SEAT_CAPABILITY_KEYBOARD;
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if (!hasKeyboard && wlWm.keyboard)
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{
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wl_keyboard_destroy(wlWm.keyboard);
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wlWm.keyboard = NULL;
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}
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else if (hasKeyboard && !wlWm.keyboard)
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{
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wlWm.keyboard = wl_seat_get_keyboard(wlWm.seat);
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wl_keyboard_add_listener(wlWm.keyboard, &keyboardListener, NULL);
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}
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}
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static void seatCapabilitiesHandler(void * data, struct wl_seat * seat,
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uint32_t capabilities)
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{
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wlWm.capabilities = capabilities;
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handlePointerCapability(capabilities);
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handleKeyboardCapability(capabilities);
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}
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static void seatNameHandler(void * data, struct wl_seat * seat,
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const char * name)
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{
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// Do nothing.
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}
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static const struct wl_seat_listener seatListener = {
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.capabilities = seatCapabilitiesHandler,
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.name = seatNameHandler,
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};
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bool waylandInputInit(void)
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{
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if (!wlWm.seat)
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{
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DEBUG_ERROR("Compositor missing wl_seat, will not proceed");
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return false;
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}
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if (wlWm.warpSupport && (!wlWm.relativePointerManager || !wlWm.pointerConstraints))
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{
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DEBUG_WARN("Cursor warp is requested, but cannot be honoured due to lack "
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"of zwp_relative_pointer_manager_v1 or zwp_pointer_constraints_v1");
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wlWm.warpSupport = false;
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}
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if (!wlWm.relativePointerManager)
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DEBUG_WARN("zwp_relative_pointer_manager_v1 not exported by compositor, "
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"mouse will not be captured");
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if (!wlWm.pointerConstraints)
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DEBUG_WARN("zwp_pointer_constraints_v1 not exported by compositor, mouse "
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"will not be captured");
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if (!wlWm.keyboardInhibitManager)
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DEBUG_WARN("zwp_keyboard_shortcuts_inhibit_manager_v1 not exported by "
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"compositor, keyboard will not be grabbed");
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wl_seat_add_listener(wlWm.seat, &seatListener, NULL);
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wl_display_roundtrip(wlWm.display);
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if (wlWm.warpSupport)
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{
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wlWm.relativePointer =
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zwp_relative_pointer_manager_v1_get_relative_pointer(
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wlWm.relativePointerManager, wlWm.pointer);
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zwp_relative_pointer_v1_add_listener(wlWm.relativePointer,
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&relativePointerListener, NULL);
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}
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LG_LOCK_INIT(wlWm.confineLock);
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return true;
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}
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void waylandInputFree(void)
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{
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waylandUngrabPointer();
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LG_LOCK_FREE(wlWm.confineLock);
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wl_pointer_destroy(wlWm.pointer);
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wl_keyboard_destroy(wlWm.keyboard);
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wl_seat_destroy(wlWm.seat);
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}
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void waylandGrabPointer(void)
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{
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if (!wlWm.relativePointerManager || !wlWm.pointerConstraints)
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return;
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if (!wlWm.warpSupport && !wlWm.relativePointer)
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{
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wlWm.relativePointer =
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zwp_relative_pointer_manager_v1_get_relative_pointer(
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wlWm.relativePointerManager, wlWm.pointer);
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zwp_relative_pointer_v1_add_listener(wlWm.relativePointer,
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&relativePointerListener, NULL);
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}
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INTERLOCKED_SECTION(wlWm.confineLock,
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{
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if (!wlWm.confinedPointer)
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{
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wlWm.confinedPointer = zwp_pointer_constraints_v1_confine_pointer(
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wlWm.pointerConstraints, wlWm.surface, wlWm.pointer, NULL,
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ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_PERSISTENT);
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}
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});
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}
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void waylandUngrabPointer(void)
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{
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INTERLOCKED_SECTION(wlWm.confineLock,
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{
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if (wlWm.confinedPointer)
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{
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zwp_confined_pointer_v1_destroy(wlWm.confinedPointer);
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wlWm.confinedPointer = NULL;
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}
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});
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if (!wlWm.warpSupport)
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{
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if (!wlWm.relativePointer)
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{
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wlWm.relativePointer =
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zwp_relative_pointer_manager_v1_get_relative_pointer(
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wlWm.relativePointerManager, wlWm.pointer);
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zwp_relative_pointer_v1_add_listener(wlWm.relativePointer,
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&relativePointerListener, NULL);
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}
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app_resyncMouseBasic();
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app_handleMouseBasic();
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}
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}
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void waylandCapturePointer(void)
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{
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if (!wlWm.warpSupport)
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{
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waylandGrabPointer();
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return;
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}
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INTERLOCKED_SECTION(wlWm.confineLock,
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{
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if (wlWm.confinedPointer)
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{
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zwp_confined_pointer_v1_destroy(wlWm.confinedPointer);
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wlWm.confinedPointer = NULL;
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}
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wlWm.lockedPointer = zwp_pointer_constraints_v1_lock_pointer(
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wlWm.pointerConstraints, wlWm.surface, wlWm.pointer, NULL,
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ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_PERSISTENT);
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});
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}
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void waylandUncapturePointer(void)
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{
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INTERLOCKED_SECTION(wlWm.confineLock,
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{
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if (wlWm.lockedPointer)
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{
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zwp_locked_pointer_v1_destroy(wlWm.lockedPointer);
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wlWm.lockedPointer = NULL;
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}
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/* we need to ungrab the pointer on the following conditions when exiting capture mode:
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* - if warp is not supported, exit via window edge detection will never work
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* as the cursor can not be warped out of the window when we release it.
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* - if the format is invalid as we do not know where the guest cursor is,
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* which also breaks edge detection.
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* - if the user has opted to use captureInputOnly mode.
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*/
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if (!wlWm.warpSupport || !app_isFormatValid() || app_isCaptureOnlyMode())
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{
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waylandUngrabPointer();
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}
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else
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{
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wlWm.confinedPointer = zwp_pointer_constraints_v1_confine_pointer(
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wlWm.pointerConstraints, wlWm.surface, wlWm.pointer, NULL,
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ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_PERSISTENT);
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}
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});
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}
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void waylandGrabKeyboard(void)
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{
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if (wlWm.keyboardInhibitManager && !wlWm.keyboardInhibitor)
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{
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wlWm.keyboardInhibitor = zwp_keyboard_shortcuts_inhibit_manager_v1_inhibit_shortcuts(
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wlWm.keyboardInhibitManager, wlWm.surface, wlWm.seat);
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}
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}
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void waylandUngrabKeyboard(void)
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{
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if (wlWm.keyboardInhibitor)
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{
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zwp_keyboard_shortcuts_inhibitor_v1_destroy(wlWm.keyboardInhibitor);
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wlWm.keyboardInhibitor = NULL;
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}
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}
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void waylandWarpPointer(int x, int y, bool exiting)
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{
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if (!wlWm.pointerInSurface || wlWm.lockedPointer)
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return;
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INTERLOCKED_SECTION(wlWm.confineLock,
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{
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if (!wlWm.lockedPointer)
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{
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LG_UNLOCK(wlWm.confineLock);
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return;
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}
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if (x < 0) x = 0;
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else if (x >= wlWm.width) x = wlWm.width - 1;
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if (y < 0) y = 0;
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else if (y >= wlWm.height) y = wlWm.height - 1;
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struct wl_region * region = wl_compositor_create_region(wlWm.compositor);
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wl_region_add(region, x, y, 1, 1);
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if (wlWm.confinedPointer)
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{
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zwp_confined_pointer_v1_set_region(wlWm.confinedPointer, region);
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wl_surface_commit(wlWm.surface);
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zwp_confined_pointer_v1_set_region(wlWm.confinedPointer, NULL);
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}
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else
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{
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struct zwp_confined_pointer_v1 * confine;
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confine = zwp_pointer_constraints_v1_confine_pointer(
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wlWm.pointerConstraints, wlWm.surface, wlWm.pointer, region,
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ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_PERSISTENT);
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wl_surface_commit(wlWm.surface);
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zwp_confined_pointer_v1_destroy(confine);
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}
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wl_surface_commit(wlWm.surface);
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wl_region_destroy(region);
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});
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}
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void waylandRealignPointer(void)
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{
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if (!wlWm.warpSupport)
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app_resyncMouseBasic();
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}
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void waylandGuestPointerUpdated(double x, double y, double localX, double localY)
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{
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if (!wlWm.warpSupport || !wlWm.pointerInSurface || wlWm.lockedPointer)
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return;
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waylandWarpPointer((int) localX, (int) localY, false);
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}
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