wlroots-hyprland/rootston/cursor.c

597 lines
20 KiB
C
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#define _XOPEN_SOURCE 700
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#include <stdlib.h>
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#include <stdbool.h>
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#include <stdint.h>
#include <string.h>
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#include <math.h>
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#include <assert.h>
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#ifdef __linux__
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#include <linux/input-event-codes.h>
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#elif __FreeBSD__
#include <dev/evdev/input-event-codes.h>
#endif
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#include <wayland-server.h>
#include <wlr/types/wlr_cursor.h>
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#include <wlr/util/log.h>
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#include <wlr/types/wlr_data_device.h>
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#include "rootston/config.h"
#include "rootston/input.h"
#include "rootston/desktop.h"
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#include "rootston/view.h"
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const struct roots_input_event *get_input_event(struct roots_input *input,
uint32_t serial) {
size_t len = sizeof(input->input_events) / sizeof(*input->input_events);
for (size_t i = 0; i < len; ++i) {
if (input->input_events[i].cursor
&& input->input_events[i].serial == serial) {
return &input->input_events[i];
}
}
return NULL;
}
static void cursor_set_xcursor_image(struct roots_input *input,
struct wlr_xcursor_image *image) {
struct roots_output *output;
wl_list_for_each(output, &input->server->desktop->outputs, link) {
if (!wlr_output_set_cursor(output->wlr_output, image->buffer,
image->width, image->width, image->height,
image->hotspot_x, image->hotspot_y)) {
wlr_log(L_DEBUG, "Failed to set hardware cursor");
return;
}
}
}
static void cursor_set_surface(struct roots_input *input,
struct wlr_surface *surface, int32_t hotspot_x, int32_t hotspot_y) {
struct roots_output *output;
wl_list_for_each(output, &input->server->desktop->outputs, link) {
wlr_output_set_cursor_surface(output->wlr_output, surface,
hotspot_x, hotspot_y);
}
}
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void view_begin_move(struct roots_input *input, struct wlr_cursor *cursor,
struct roots_view *view) {
input->mode = ROOTS_CURSOR_MOVE;
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input->offs_x = cursor->x;
input->offs_y = cursor->y;
input->view_x = view->x;
input->view_y = view->y;
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wlr_seat_pointer_clear_focus(input->wl_seat);
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struct wlr_xcursor *xcursor = get_move_xcursor(input->xcursor_theme);
if (xcursor != NULL) {
cursor_set_xcursor_image(input, xcursor->images[0]);
}
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}
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void view_begin_resize(struct roots_input *input, struct wlr_cursor *cursor,
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struct roots_view *view, uint32_t edges) {
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input->mode = ROOTS_CURSOR_RESIZE;
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input->offs_x = cursor->x;
input->offs_y = cursor->y;
input->view_x = view->x;
input->view_y = view->y;
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struct wlr_box size;
view_get_size(view, &size);
input->view_width = size.width;
input->view_height = size.height;
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input->resize_edges = edges;
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wlr_seat_pointer_clear_focus(input->wl_seat);
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struct wlr_xcursor *xcursor = get_resize_xcursor(input->xcursor_theme, edges);
if (xcursor != NULL) {
cursor_set_xcursor_image(input, xcursor->images[0]);
}
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}
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void view_begin_rotate(struct roots_input *input, struct wlr_cursor *cursor,
struct roots_view *view) {
input->mode = ROOTS_CURSOR_ROTATE;
input->offs_x = cursor->x;
input->offs_y = cursor->y;
input->view_rotation = view->rotation;
wlr_seat_pointer_clear_focus(input->wl_seat);
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struct wlr_xcursor *xcursor = get_rotate_xcursor(input->xcursor_theme);
if (xcursor != NULL) {
cursor_set_xcursor_image(input, xcursor->images[0]);
}
}
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void cursor_update_position(struct roots_input *input, uint32_t time) {
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struct roots_desktop *desktop = input->server->desktop;
struct roots_view *view;
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struct wlr_surface *surface;
double sx, sy;
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switch (input->mode) {
case ROOTS_CURSOR_PASSTHROUGH:
view = view_at(desktop, input->cursor->x, input->cursor->y,
&surface, &sx, &sy);
bool set_compositor_cursor = !view && input->cursor_client;
if (view) {
struct wl_client *view_client =
wl_resource_get_client(view->wlr_surface->resource);
set_compositor_cursor = view_client != input->cursor_client;
}
if (set_compositor_cursor) {
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struct wlr_xcursor *xcursor = get_default_xcursor(input->xcursor_theme);
cursor_set_xcursor_image(input, xcursor->images[0]);
input->cursor_client = NULL;
}
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if (view) {
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wlr_seat_pointer_notify_enter(input->wl_seat, surface, sx, sy);
wlr_seat_pointer_notify_motion(input->wl_seat, time, sx, sy);
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} else {
wlr_seat_pointer_clear_focus(input->wl_seat);
}
break;
case ROOTS_CURSOR_MOVE:
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if (input->active_view) {
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double dx = input->cursor->x - input->offs_x;
double dy = input->cursor->y - input->offs_y;
view_set_position(input->active_view,
input->view_x + dx, input->view_y + dy);
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}
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break;
case ROOTS_CURSOR_RESIZE:
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if (input->active_view) {
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double dx = input->cursor->x - input->offs_x;
double dy = input->cursor->y - input->offs_y;
double active_x = input->active_view->x;
double active_y = input->active_view->y;
int width = input->view_width;
int height = input->view_height;
if (input->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_TOP) {
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active_y = input->view_y + dy;
height -= dy;
}
if (input->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_BOTTOM) {
height += dy;
}
if (input->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_LEFT) {
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active_x = input->view_x + dx;
width -= dx;
}
if (input->resize_edges & ROOTS_CURSOR_RESIZE_EDGE_RIGHT) {
width += dx;
}
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// TODO we might need one configure event for this
if (active_x != input->active_view->x ||
active_y != input->active_view->y) {
view_set_position(input->active_view, active_x, active_y);
}
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view_resize(input->active_view, width, height);
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}
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break;
case ROOTS_CURSOR_ROTATE:
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if (input->active_view) {
struct roots_view *view = input->active_view;
int ox = view->x + view->wlr_surface->current->width/2,
oy = view->y + view->wlr_surface->current->height/2;
int ux = input->offs_x - ox,
uy = input->offs_y - oy;
int vx = input->cursor->x - ox,
vy = input->cursor->y - oy;
float angle = atan2(vx*uy - vy*ux, vx*ux + vy*uy);
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int steps = 12;
angle = round(angle/M_PI*steps) / (steps/M_PI);
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view->rotation = input->view_rotation + angle;
}
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break;
}
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}
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void set_view_focus(struct roots_input *input, struct roots_desktop *desktop,
struct roots_view *view) {
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if (input->active_view == view) {
return;
}
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input->active_view = view;
input->mode = ROOTS_CURSOR_PASSTHROUGH;
if (!view) {
return;
}
if (view->type == ROOTS_XWAYLAND_VIEW &&
view->xwayland_surface->override_redirect) {
return;
}
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size_t index = 0;
for (size_t i = 0; i < desktop->views->length; ++i) {
struct roots_view *_view = desktop->views->items[i];
if (_view != view) {
view_activate(_view, false);
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} else {
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index = i;
}
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}
view_activate(view, true);
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// TODO: list_swap
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wlr_list_del(desktop->views, index);
wlr_list_add(desktop->views, view);
wlr_seat_keyboard_notify_enter(input->wl_seat, view->wlr_surface);
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}
static void handle_cursor_motion(struct wl_listener *listener, void *data) {
struct roots_input *input = wl_container_of(listener, input, cursor_motion);
struct wlr_event_pointer_motion *event = data;
wlr_cursor_move(input->cursor, event->device,
event->delta_x, event->delta_y);
cursor_update_position(input, (uint32_t)(event->time_usec / 1000));
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}
static void handle_cursor_motion_absolute(struct wl_listener *listener,
void *data) {
struct roots_input *input = wl_container_of(listener,
input, cursor_motion_absolute);
struct wlr_event_pointer_motion_absolute *event = data;
wlr_cursor_warp_absolute(input->cursor, event->device,
event->x_mm / event->width_mm, event->y_mm / event->height_mm);
cursor_update_position(input, (uint32_t)(event->time_usec / 1000));
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}
static void handle_cursor_axis(struct wl_listener *listener, void *data) {
struct roots_input *input =
wl_container_of(listener, input, cursor_axis);
struct wlr_event_pointer_axis *event = data;
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wlr_seat_pointer_notify_axis(input->wl_seat, event->time_sec,
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event->orientation, event->delta);
}
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static bool is_meta_pressed(struct roots_input *input,
struct wlr_input_device *device) {
uint32_t meta_key = 0;
struct keyboard_config *config;
if ((config = config_get_keyboard(input->server->config, device))) {
meta_key = config->meta_key;
} else if (!meta_key && (config = config_get_keyboard(input->server->config,
NULL))) {
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meta_key = config->meta_key;
}
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if (meta_key == 0) {
return false;
}
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struct roots_keyboard *keyboard;
wl_list_for_each(keyboard, &input->keyboards, link) {
uint32_t modifiers =
wlr_keyboard_get_modifiers(keyboard->device->keyboard);
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if ((modifiers ^ meta_key) == 0) {
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return true;
}
}
return false;
}
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static void do_cursor_button_press(struct roots_input *input,
struct wlr_cursor *cursor, struct wlr_input_device *device,
uint32_t time, uint32_t button, uint32_t state) {
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struct roots_desktop *desktop = input->server->desktop;
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struct wlr_surface *surface;
double sx, sy;
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struct roots_view *view = view_at(desktop,
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input->cursor->x, input->cursor->y, &surface, &sx, &sy);
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if (state == WLR_BUTTON_PRESSED && view && is_meta_pressed(input, device)) {
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set_view_focus(input, desktop, view);
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uint32_t edges;
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switch (button) {
case BTN_LEFT:
view_begin_move(input, cursor, view);
break;
case BTN_RIGHT:
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edges = 0;
if (sx < view->wlr_surface->current->width/2) {
edges |= ROOTS_CURSOR_RESIZE_EDGE_LEFT;
} else {
edges |= ROOTS_CURSOR_RESIZE_EDGE_RIGHT;
}
if (sy < view->wlr_surface->current->height/2) {
edges |= ROOTS_CURSOR_RESIZE_EDGE_TOP;
} else {
edges |= ROOTS_CURSOR_RESIZE_EDGE_BOTTOM;
}
view_begin_resize(input, cursor, view, edges);
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break;
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case BTN_MIDDLE:
view_begin_rotate(input, cursor, view);
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break;
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}
return;
}
uint32_t serial = wlr_seat_pointer_notify_button(input->wl_seat, time, button,
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state);
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int i;
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switch (state) {
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case WLR_BUTTON_RELEASED:
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set_view_focus(input, desktop, NULL);
cursor_update_position(input, time);
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break;
case WLR_BUTTON_PRESSED:
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i = input->input_events_idx;
input->input_events[i].serial = serial;
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input->input_events[i].cursor = cursor;
input->input_events[i].device = device;
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input->input_events_idx = (i + 1)
% (sizeof(input->input_events) / sizeof(input->input_events[0]));
set_view_focus(input, desktop, view);
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break;
}
}
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static void handle_cursor_button(struct wl_listener *listener, void *data) {
struct roots_input *input = wl_container_of(listener, input, cursor_button);
struct wlr_event_pointer_button *event = data;
do_cursor_button_press(input, input->cursor, event->device,
(uint32_t)(event->time_usec / 1000), event->button, event->state);
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}
static void handle_touch_down(struct wl_listener *listener, void *data) {
struct wlr_event_touch_down *event = data;
struct roots_input *input =
wl_container_of(listener, input, cursor_touch_down);
struct roots_touch_point *point =
calloc(1, sizeof(struct roots_touch_point));
point->device = event->device->data;
point->slot = event->slot;
point->x = event->x_mm / event->width_mm;
point->y = event->y_mm / event->height_mm;
wlr_cursor_warp_absolute(input->cursor, event->device, point->x, point->y);
cursor_update_position(input, (uint32_t)(event->time_usec / 1000));
wl_list_insert(&input->touch_points, &point->link);
do_cursor_button_press(input, input->cursor, event->device,
(uint32_t)(event->time_usec / 1000), BTN_LEFT, 1);
}
static void handle_touch_up(struct wl_listener *listener, void *data) {
struct wlr_event_touch_up *event = data;
struct roots_input *input =
wl_container_of(listener, input, cursor_touch_up);
struct roots_touch_point *point;
wl_list_for_each(point, &input->touch_points, link) {
if (point->slot == event->slot) {
wl_list_remove(&point->link);
break;
}
}
do_cursor_button_press(input, input->cursor, event->device,
(uint32_t)(event->time_usec / 1000), BTN_LEFT, 0);
}
static void handle_touch_motion(struct wl_listener *listener, void *data) {
struct wlr_event_touch_motion *event = data;
struct roots_input *input =
wl_container_of(listener, input, cursor_touch_motion);
struct roots_touch_point *point;
wl_list_for_each(point, &input->touch_points, link) {
if (point->slot == event->slot) {
point->x = event->x_mm / event->width_mm;
point->y = event->y_mm / event->height_mm;
wlr_cursor_warp_absolute(input->cursor, event->device,
point->x, point->y);
cursor_update_position(input,
(uint32_t)(event->time_usec / 1000));
break;
}
}
}
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static void handle_tool_axis(struct wl_listener *listener, void *data) {
struct roots_input *input = wl_container_of(listener, input, cursor_tool_axis);
struct wlr_event_tablet_tool_axis *event = data;
if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_X) &&
(event->updated_axes & WLR_TABLET_TOOL_AXIS_Y)) {
wlr_cursor_warp_absolute(input->cursor, event->device,
event->x_mm / event->width_mm, event->y_mm / event->height_mm);
cursor_update_position(input, (uint32_t)(event->time_usec / 1000));
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}
}
static void handle_tool_tip(struct wl_listener *listener, void *data) {
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struct roots_input *input = wl_container_of(listener, input, cursor_tool_tip);
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struct wlr_event_tablet_tool_tip *event = data;
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do_cursor_button_press(input, input->cursor, event->device,
(uint32_t)(event->time_usec / 1000), BTN_LEFT, event->state);
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}
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static void handle_drag_icon_destroy(struct wl_listener *listener, void *data) {
struct roots_drag_icon *drag_icon =
wl_container_of(listener, drag_icon, surface_destroy);
wl_list_remove(&drag_icon->link);
wl_list_remove(&drag_icon->surface_destroy.link);
wl_list_remove(&drag_icon->surface_commit.link);
free(drag_icon);
}
static void handle_drag_icon_commit(struct wl_listener *listener, void *data) {
struct roots_drag_icon *drag_icon =
wl_container_of(listener, drag_icon, surface_commit);
// TODO the spec hints at rules that can determine whether the drag icon is
// mapped here, but it is not completely clear so we need to test more
// toolkits to see how we should interpret the surface state here.
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drag_icon->sx += drag_icon->surface->current->sx;
drag_icon->sy += drag_icon->surface->current->sy;
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}
static void handle_pointer_grab_begin(struct wl_listener *listener,
void *data) {
struct roots_input *input =
wl_container_of(listener, input, pointer_grab_begin);
struct wlr_seat_pointer_grab *grab = data;
if (grab->interface == &wlr_data_device_pointer_drag_interface) {
struct wlr_drag *drag = grab->data;
if (drag->icon) {
struct roots_drag_icon *iter_icon;
wl_list_for_each(iter_icon, &input->drag_icons, link) {
if (iter_icon->surface == drag->icon) {
// already in the list
return;
}
}
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struct roots_drag_icon *drag_icon =
calloc(1, sizeof(struct roots_drag_icon));
drag_icon->surface = drag->icon;
wl_list_insert(&input->drag_icons, &drag_icon->link);
wl_signal_add(&drag->icon->events.destroy,
&drag_icon->surface_destroy);
drag_icon->surface_destroy.notify = handle_drag_icon_destroy;
wl_signal_add(&drag->icon->events.commit,
&drag_icon->surface_commit);
drag_icon->surface_commit.notify = handle_drag_icon_commit;
}
}
}
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static void handle_pointer_grab_end(struct wl_listener *listener, void *data) {
struct roots_input *input =
wl_container_of(listener, input, pointer_grab_end);
cursor_update_position(input, 0);
}
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static void handle_request_set_cursor(struct wl_listener *listener,
void *data) {
struct roots_input *input = wl_container_of(listener, input,
request_set_cursor);
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struct wlr_seat_pointer_request_set_cursor_event *event = data;
struct wlr_surface *focused_surface =
event->seat_handle->wlr_seat->pointer_state.focused_surface;
bool ok = focused_surface != NULL && focused_surface->resource != NULL;
if (ok) {
struct wl_client *focused_client =
wl_resource_get_client(focused_surface->resource);
ok = event->client == focused_client;
}
if (!ok || input->mode != ROOTS_CURSOR_PASSTHROUGH) {
wlr_log(L_DEBUG, "Denying request to set cursor from unfocused client");
return;
}
wlr_log(L_DEBUG, "Setting client cursor");
cursor_set_surface(input, event->surface, event->hotspot_x, event->hotspot_y);
input->cursor_client = event->client;
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}
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void cursor_initialize(struct roots_input *input) {
struct wlr_cursor *cursor = input->cursor;
// TODO: Does this belong here
wl_list_init(&input->touch_points);
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wl_signal_add(&cursor->events.motion, &input->cursor_motion);
input->cursor_motion.notify = handle_cursor_motion;
wl_signal_add(&cursor->events.motion_absolute,
&input->cursor_motion_absolute);
input->cursor_motion_absolute.notify = handle_cursor_motion_absolute;
wl_signal_add(&cursor->events.button, &input->cursor_button);
input->cursor_button.notify = handle_cursor_button;
wl_signal_add(&cursor->events.axis, &input->cursor_axis);
input->cursor_axis.notify = handle_cursor_axis;
wl_signal_add(&cursor->events.touch_down, &input->cursor_touch_down);
input->cursor_touch_down.notify = handle_touch_down;
wl_signal_add(&cursor->events.touch_up, &input->cursor_touch_up);
input->cursor_touch_up.notify = handle_touch_up;
wl_signal_add(&cursor->events.touch_motion, &input->cursor_touch_motion);
input->cursor_touch_motion.notify = handle_touch_motion;
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wl_signal_add(&cursor->events.tablet_tool_axis, &input->cursor_tool_axis);
input->cursor_tool_axis.notify = handle_tool_axis;
wl_signal_add(&cursor->events.tablet_tool_tip, &input->cursor_tool_tip);
input->cursor_tool_tip.notify = handle_tool_tip;
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wl_signal_add(&input->wl_seat->events.pointer_grab_end, &input->pointer_grab_end);
input->pointer_grab_end.notify = handle_pointer_grab_end;
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wl_signal_add(&input->wl_seat->events.pointer_grab_begin, &input->pointer_grab_begin);
input->pointer_grab_begin.notify = handle_pointer_grab_begin;
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wl_list_init(&input->request_set_cursor.link);
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wl_signal_add(&input->wl_seat->events.request_set_cursor,
&input->request_set_cursor);
input->request_set_cursor.notify = handle_request_set_cursor;
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}
static void reset_device_mappings(struct roots_config *config,
struct wlr_cursor *cursor, struct wlr_input_device *device) {
wlr_cursor_map_input_to_output(cursor, device, NULL);
struct device_config *dconfig;
if ((dconfig = config_get_device(config, device))) {
wlr_cursor_map_input_to_region(cursor, device, dconfig->mapped_box);
}
}
static void set_device_output_mappings(struct roots_config *config,
struct wlr_cursor *cursor, struct wlr_output *output,
struct wlr_input_device *device) {
struct device_config *dconfig;
dconfig = config_get_device(config, device);
if (dconfig && dconfig->mapped_output &&
strcmp(dconfig->mapped_output, output->name) == 0) {
wlr_cursor_map_input_to_output(cursor, device, output);
}
}
void cursor_load_config(struct roots_config *config,
struct wlr_cursor *cursor,
struct roots_input *input,
struct roots_desktop *desktop) {
struct roots_pointer *pointer;
struct roots_touch *touch;
struct roots_tablet_tool *tablet_tool;
struct roots_output *output;
// reset mappings
wlr_cursor_map_to_output(cursor, NULL);
wl_list_for_each(pointer, &input->pointers, link) {
reset_device_mappings(config, cursor, pointer->device);
}
wl_list_for_each(touch, &input->touch, link) {
reset_device_mappings(config, cursor, touch->device);
}
wl_list_for_each(tablet_tool, &input->tablet_tools, link) {
reset_device_mappings(config, cursor, tablet_tool->device);
}
// configure device to output mappings
const char *mapped_output = config->cursor.mapped_output;
wl_list_for_each(output, &desktop->outputs, link) {
if (mapped_output && strcmp(mapped_output, output->wlr_output->name) == 0) {
wlr_cursor_map_to_output(cursor, output->wlr_output);
}
wl_list_for_each(pointer, &input->pointers, link) {
set_device_output_mappings(config, cursor, output->wlr_output,
pointer->device);
}
wl_list_for_each(tablet_tool, &input->tablet_tools, link) {
set_device_output_mappings(config, cursor, output->wlr_output,
tablet_tool->device);
}
wl_list_for_each(touch, &input->touch, link) {
set_device_output_mappings(config, cursor, output->wlr_output,
touch->device);
}
}
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}