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cursor: overhaul

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This commit is contained in:
Kirill Primak 2023-01-17 22:49:10 +03:00
parent f0f89439de
commit a1a9ab4017
5 changed files with 525 additions and 1420 deletions
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162
examples/multi-pointer.c
View file

@ -12,6 +12,7 @@
#include <wlr/render/allocator.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/types/wlr_cursor.h>
#include <wlr/types/wlr_input_mapper.h>
#include <wlr/types/wlr_keyboard.h>
#include <wlr/types/wlr_matrix.h>
#include <wlr/types/wlr_output_layout.h>
@ -28,32 +29,13 @@ struct sample_state {
float default_color[4];
float clear_color[4];
struct wlr_output_layout *layout;
struct wl_list cursors; // sample_cursor::link
struct wl_list pointers; // sample_pointer::link
struct wl_list outputs; // sample_output::link
struct timespec last_frame;
struct wlr_input_mapper *input_mapper;
struct wl_list outputs; // sample_output.link
struct wl_list pointers; // sample_pointers.link
struct wl_listener new_output;
struct wl_listener new_input;
};
struct sample_cursor {
struct sample_state *sample;
struct wlr_input_device *device;
struct wlr_cursor *cursor;
struct wl_list link;
struct wl_listener cursor_motion;
struct wl_listener cursor_motion_absolute;
struct wl_listener cursor_button;
struct wl_listener cursor_axis;
struct wl_listener destroy;
};
struct sample_pointer {
struct wlr_input_device *device;
struct wl_list link;
};
struct sample_output {
struct sample_state *sample;
struct wlr_output *output;
@ -69,25 +51,15 @@ struct sample_keyboard {
struct wl_listener destroy;
};
static void configure_cursor(struct wlr_cursor *cursor, struct wlr_input_device *device,
struct sample_state *sample) {
struct sample_output *output;
wlr_log(WLR_INFO, "Configuring cursor %p for device %p", cursor, device);
// reset mappings
wlr_cursor_map_to_output(cursor, NULL);
wlr_cursor_detach_input_device(cursor, device);
wlr_cursor_map_input_to_output(cursor, device, NULL);
wlr_cursor_attach_input_device(cursor, device);
// configure device to output mappings
wl_list_for_each(output, &sample->outputs, link) {
wlr_cursor_map_to_output(cursor, output->output);
wlr_cursor_map_input_to_output(cursor, device, output->output);
}
}
struct sample_pointer {
struct sample_state *sample;
struct wlr_pointer *wlr_pointer;
struct wlr_cursor *cursor;
struct wl_listener motion;
struct wl_listener motion_absolute;
struct wl_listener destroy;
struct wl_list link;
};
static void output_frame_notify(struct wl_listener *listener, void *data) {
struct sample_output *output = wl_container_of(listener, output, frame);
@ -106,43 +78,39 @@ static void output_frame_notify(struct wl_listener *listener, void *data) {
wlr_output_commit(wlr_output);
}
static void handle_cursor_motion(struct wl_listener *listener, void *data) {
struct sample_cursor *cursor =
wl_container_of(listener, cursor, cursor_motion);
static void pointer_motion_notify(struct wl_listener *listener, void *data) {
struct sample_pointer *pointer = wl_container_of(listener, pointer, motion);
struct wlr_pointer_motion_event *event = data;
wlr_cursor_move(cursor->cursor, &event->pointer->base, event->delta_x,
event->delta_y);
wlr_cursor_warp(pointer->cursor, pointer->cursor->x + event->delta_x,
pointer->cursor->y + event->delta_y);
}
static void handle_cursor_motion_absolute(struct wl_listener *listener,
void *data) {
struct sample_cursor *cursor =
wl_container_of(listener, cursor, cursor_motion_absolute);
static void pointer_motion_absolute_notify(struct wl_listener *listener, void *data) {
struct sample_pointer *pointer =
wl_container_of(listener, pointer, motion_absolute);
struct wlr_pointer_motion_absolute_event *event = data;
wlr_cursor_warp_absolute(cursor->cursor, &event->pointer->base, event->x,
event->y);
double lx, ly;
wlr_input_mapper_absolute_to_layout(pointer->sample->input_mapper,
&pointer->wlr_pointer->base, event->x, event->y, &lx, &ly);
wlr_cursor_warp(pointer->cursor, lx, ly);
}
static void cursor_destroy(struct sample_cursor *cursor) {
wl_list_remove(&cursor->link);
wl_list_remove(&cursor->cursor_motion.link);
wl_list_remove(&cursor->cursor_motion_absolute.link);
wlr_cursor_destroy(cursor->cursor);
free(cursor);
static void pointer_destroy_notify(struct wl_listener *listener, void *data) {
struct sample_pointer *pointer = wl_container_of(listener, pointer, destroy);
wlr_cursor_destroy(pointer->cursor);
wl_list_remove(&pointer->link);
wl_list_remove(&pointer->destroy.link);
wl_list_remove(&pointer->motion.link);
wl_list_remove(&pointer->motion_absolute.link);
free(pointer);
}
static void output_remove_notify(struct wl_listener *listener, void *data) {
struct sample_output *sample_output = wl_container_of(listener, sample_output, destroy);
struct sample_state *sample = sample_output->sample;
wl_list_remove(&sample_output->frame.link);
wl_list_remove(&sample_output->destroy.link);
wl_list_remove(&sample_output->link);
free(sample_output);
struct sample_cursor *cursor;
wl_list_for_each(cursor, &sample->cursors, link) {
configure_cursor(cursor->cursor, cursor->device, sample);
}
}
static void new_output_notify(struct wl_listener *listener, void *data) {
@ -161,19 +129,15 @@ static void new_output_notify(struct wl_listener *listener, void *data) {
wlr_output_layout_add_auto(sample->layout, output);
struct sample_cursor *cursor;
wl_list_for_each(cursor, &sample->cursors, link) {
configure_cursor(cursor->cursor, cursor->device, sample);
struct wlr_xcursor_image *image = sample->xcursor->images[0];
wlr_cursor_set_image(cursor->cursor, image->buffer, image->width * 4,
image->width, image->height, image->hotspot_x, image->hotspot_y, 0);
wlr_cursor_warp(cursor->cursor, NULL, cursor->cursor->x,
cursor->cursor->y);
}
wl_list_insert(&sample->outputs, &sample_output->link);
struct sample_pointer *pointer;
wl_list_for_each(pointer, &sample->pointers, link) {
struct wlr_xcursor_image *image = sample->xcursor->images[0];
wlr_cursor_set_image(pointer->cursor, image->buffer, image->width * 4,
image->width, image->height, image->hotspot_x, image->hotspot_y, 0);
}
struct wlr_output_mode *mode = wlr_output_preferred_mode(output);
if (mode != NULL) {
wlr_output_set_mode(output, mode);
@ -233,31 +197,24 @@ static void new_input_notify(struct wl_listener *listener, void *data) {
xkb_context_unref(context);
break;
case WLR_INPUT_DEVICE_POINTER:;
struct sample_cursor *cursor = calloc(1, sizeof(struct sample_cursor));
struct sample_pointer *pointer = calloc(1, sizeof(struct sample_pointer));
pointer->device = device;
cursor->sample = sample;
cursor->device = device;
pointer->wlr_pointer = wlr_pointer_from_input_device(device);
pointer->sample = sample;
pointer->cursor = wlr_cursor_create(sample->layout);
cursor->cursor = wlr_cursor_create();
wl_list_insert(&sample->pointers, &pointer->link);
wlr_cursor_attach_output_layout(cursor->cursor, sample->layout);
wl_signal_add(&cursor->cursor->events.motion, &cursor->cursor_motion);
cursor->cursor_motion.notify = handle_cursor_motion;
wl_signal_add(&cursor->cursor->events.motion_absolute,
&cursor->cursor_motion_absolute);
cursor->cursor_motion_absolute.notify = handle_cursor_motion_absolute;
wlr_cursor_attach_input_device(cursor->cursor, device);
configure_cursor(cursor->cursor, device, sample);
wl_signal_add(&device->events.destroy, &pointer->destroy);
pointer->destroy.notify = pointer_destroy_notify;
wl_signal_add(&pointer->wlr_pointer->events.motion, &pointer->motion);
pointer->motion.notify = pointer_motion_notify;
wl_signal_add(&pointer->wlr_pointer->events.motion_absolute,
&pointer->motion_absolute);
pointer->motion_absolute.notify = pointer_motion_absolute_notify;
struct wlr_xcursor_image *image = sample->xcursor->images[0];
wlr_cursor_set_image(cursor->cursor, image->buffer, image->width * 4,
wlr_cursor_set_image(pointer->cursor, image->buffer, image->width * 4,
image->width, image->height, image->hotspot_x, image->hotspot_y, 0);
wl_list_insert(&sample->cursors, &cursor->link);
wl_list_insert(&sample->pointers, &pointer->link);
break;
default:
break;
@ -280,19 +237,16 @@ int main(int argc, char *argv[]) {
state.renderer = wlr_renderer_autocreate(wlr);
state.allocator = wlr_allocator_autocreate(wlr, state.renderer);
wl_list_init(&state.cursors);
wl_list_init(&state.pointers);
wl_list_init(&state.outputs);
state.layout = wlr_output_layout_create();
wl_list_init(&state.pointers);
wl_signal_add(&wlr->events.new_output, &state.new_output);
state.new_output.notify = new_output_notify;
wl_signal_add(&wlr->events.new_input, &state.new_input);
state.new_input.notify = new_input_notify;
clock_gettime(CLOCK_MONOTONIC, &state.last_frame);
struct wlr_xcursor_theme *theme = wlr_xcursor_theme_load("default", 16);
if (!theme) {
wlr_log(WLR_ERROR, "Failed to load cursor theme");
@ -312,16 +266,6 @@ int main(int argc, char *argv[]) {
wl_display_run(display);
wl_display_destroy(display);
struct sample_cursor *cursor, *tmp_cursor;
wl_list_for_each_safe(cursor, tmp_cursor, &state.cursors, link) {
cursor_destroy(cursor);
}
struct sample_pointer *pointer, *tmp_pointer;
wl_list_for_each_safe(pointer, tmp_pointer, &state.pointers, link) {
free(pointer);
}
wlr_xcursor_theme_destroy(theme);
wlr_output_layout_destroy(state.layout);
}

281
examples/pointer.c
View file

@ -12,6 +12,7 @@
#include <wlr/render/allocator.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/types/wlr_cursor.h>
#include <wlr/types/wlr_input_mapper.h>
#include <wlr/types/wlr_keyboard.h>
#include <wlr/types/wlr_matrix.h>
#include <wlr/types/wlr_output_layout.h>
@ -24,35 +25,17 @@
struct sample_state {
struct wl_display *display;
struct compositor_state *compositor;
struct wlr_renderer *renderer;
struct wlr_allocator *allocator;
struct wlr_xcursor_manager *xcursor_manager;
struct wlr_cursor *cursor;
double cur_x, cur_y;
float default_color[4];
float clear_color[4];
struct wlr_output_layout *layout;
struct wl_list devices;
struct timespec last_frame;
struct wlr_input_mapper *input_mapper;
struct wl_listener new_output;
struct wl_listener new_input;
struct wl_listener cursor_motion;
struct wl_listener cursor_motion_absolute;
struct wl_listener cursor_button;
struct wl_listener cursor_axis;
struct wl_listener touch_motion;
struct wl_listener touch_up;
struct wl_listener touch_down;
struct wl_listener touch_cancel;
struct wl_list touch_points;
struct wl_listener tablet_tool_axis;
struct wl_listener tablet_tool_proxmity;
struct wl_listener tablet_tool_tip;
struct wl_listener tablet_tool_button;
};
struct touch_point {
@ -75,23 +58,59 @@ struct sample_keyboard {
struct wl_listener destroy;
};
static void warp_to_touch(struct sample_state *state,
struct wlr_input_device *dev) {
if (wl_list_empty(&state->touch_points)) {
struct sample_pointer {
struct sample_state *state;
struct wlr_pointer *wlr_pointer;
struct wl_listener motion;
struct wl_listener motion_absolute;
struct wl_listener button;
struct wl_listener axis;
struct wl_listener frame;
struct wl_listener destroy;
};
struct sample_touch {
struct sample_state *state;
struct wlr_touch *wlr_touch;
struct wl_list points;
struct wl_listener motion;
struct wl_listener down;
struct wl_listener up;
struct wl_listener destroy;
};
struct sample_tablet {
struct sample_state *state;
struct wlr_tablet *wlr_tablet;
double x, y;
struct wl_listener axis;
struct wl_listener destroy;
};
static void warp_absolute(struct sample_state *state,
struct wlr_input_device *device, double x, double y) {
double lx, ly;
wlr_input_mapper_absolute_to_layout(state->input_mapper,
device, x, y, &lx, &ly);
wlr_cursor_warp(state->cursor, lx, ly);
}
static void warp_to_touch(struct sample_touch *touch) {
if (wl_list_empty(&touch->points)) {
return;
}
double x = 0, y = 0;
size_t n = 0;
struct touch_point *point;
wl_list_for_each(point, &state->touch_points, link) {
wl_list_for_each(point, &touch->points, link) {
x += point->x;
y += point->y;
n++;
}
x /= n;
y /= n;
wlr_cursor_warp_absolute(state->cursor, dev, x, y);
warp_absolute(touch->state, &touch->wlr_touch->base, x, y);
}
static void output_frame_notify(struct wl_listener *listener, void *data) {
@ -109,32 +128,30 @@ static void output_frame_notify(struct wl_listener *listener, void *data) {
wlr_output_commit(wlr_output);
}
static void handle_cursor_motion(struct wl_listener *listener, void *data) {
struct sample_state *sample =
wl_container_of(listener, sample, cursor_motion);
static void pointer_motion_notify(struct wl_listener *listener, void *data) {
struct sample_pointer *pointer = wl_container_of(listener, pointer, motion);
struct wlr_pointer_motion_event *event = data;
wlr_cursor_move(sample->cursor, &event->pointer->base, event->delta_x,
event->delta_y);
struct sample_state *sample = pointer->state;
wlr_cursor_warp(sample->cursor, sample->cursor->x + event->delta_x,
sample->cursor->y + event->delta_y);
}
static void handle_cursor_motion_absolute(struct wl_listener *listener,
void *data) {
struct sample_state *sample =
wl_container_of(listener, sample, cursor_motion_absolute);
static void pointer_motion_absolute_notify(struct wl_listener *listener, void *data) {
struct sample_pointer *pointer =
wl_container_of(listener, pointer, motion_absolute);
struct wlr_pointer_motion_absolute_event *event = data;
sample->cur_x = event->x;
sample->cur_y = event->y;
wlr_cursor_warp_absolute(sample->cursor, &event->pointer->base,
sample->cur_x, sample->cur_y);
warp_absolute(pointer->state, &pointer->wlr_pointer->base, event->x, event->y);
}
static void handle_cursor_button(struct wl_listener *listener, void *data) {
struct sample_state *sample =
wl_container_of(listener, sample, cursor_button);
static void pointer_button_notify(struct wl_listener *listener, void *data) {
struct sample_pointer *pointer = wl_container_of(listener, pointer, button);
struct wlr_pointer_button_event *event = data;
struct sample_state *sample = pointer->state;
float (*color)[4];
if (event->state == WLR_BUTTON_RELEASED) {
color = &sample->default_color;
@ -147,11 +164,12 @@ static void handle_cursor_button(struct wl_listener *listener, void *data) {
}
}
static void handle_cursor_axis(struct wl_listener *listener, void *data) {
struct sample_state *sample =
wl_container_of(listener, sample, cursor_axis);
static void pointer_axis_notify(struct wl_listener *listener, void *data) {
struct sample_pointer *pointer = wl_container_of(listener, pointer, axis);
struct wlr_pointer_axis_event *event = data;
struct sample_state *sample = pointer->state;
for (size_t i = 0; i < 3; ++i) {
sample->default_color[i] += event->delta > 0 ? -0.05f : 0.05f;
if (sample->default_color[i] > 1.0f) {
@ -166,40 +184,50 @@ static void handle_cursor_axis(struct wl_listener *listener, void *data) {
sizeof(sample->clear_color));
}
static void handle_touch_up(struct wl_listener *listener, void *data) {
struct sample_state *sample = wl_container_of(listener, sample, touch_up);
struct wlr_touch_up_event *event = data;
static void pointer_destroy_notify(struct wl_listener *listener, void *data) {
struct sample_pointer *pointer = wl_container_of(listener, pointer, destroy);
wl_list_remove(&pointer->destroy.link);
wl_list_remove(&pointer->motion.link);
wl_list_remove(&pointer->motion_absolute.link);
wl_list_remove(&pointer->button.link);
wl_list_remove(&pointer->axis.link);
free(pointer);
}
static void touch_up_notify(struct wl_listener *listener, void *data) {
struct sample_touch *touch = wl_container_of(listener, touch, up);
struct wlr_touch_up_event *event = data;
struct touch_point *point, *tmp;
wl_list_for_each_safe(point, tmp, &sample->touch_points, link) {
wl_list_for_each_safe(point, tmp, &touch->points, link) {
if (point->touch_id == event->touch_id) {
wl_list_remove(&point->link);
break;
}
}
warp_to_touch(sample, &event->touch->base);
warp_to_touch(touch);
}
static void handle_touch_down(struct wl_listener *listener, void *data) {
struct sample_state *sample = wl_container_of(listener, sample, touch_down);
struct wlr_touch_down_event *event = data;
static void touch_down_notify(struct wl_listener *listener, void *data) {
struct sample_touch *touch = wl_container_of(listener, touch, down);
struct wlr_touch_down_event *event = data;
struct touch_point *point = calloc(1, sizeof(struct touch_point));
point->touch_id = event->touch_id;
point->x = event->x;
point->y = event->y;
wl_list_insert(&sample->touch_points, &point->link);
wl_list_insert(&touch->points, &point->link);
warp_to_touch(sample, &event->touch->base);
warp_to_touch(touch);
}
static void handle_touch_motion(struct wl_listener *listener, void *data) {
struct sample_state *sample =
wl_container_of(listener, sample, touch_motion);
struct wlr_touch_motion_event *event = data;
static void touch_motion_notify(struct wl_listener *listener, void *data) {
struct sample_touch *touch = wl_container_of(listener, touch, motion);
struct wlr_touch_motion_event *event = data;
struct touch_point *point;
wl_list_for_each(point, &sample->touch_points, link) {
wl_list_for_each(point, &touch->points, link) {
if (point->touch_id == event->touch_id) {
point->x = event->x;
point->y = event->y;
@ -207,22 +235,36 @@ static void handle_touch_motion(struct wl_listener *listener, void *data) {
}
}
warp_to_touch(sample, &event->touch->base);
warp_to_touch(touch);
}
static void handle_touch_cancel(struct wl_listener *listener, void *data) {
wlr_log(WLR_DEBUG, "TODO: touch cancel");
static void touch_destroy_notify(struct wl_listener *listener, void *data) {
struct sample_touch *touch = wl_container_of(listener, touch, destroy);
wl_list_remove(&touch->destroy.link);
wl_list_remove(&touch->up.link);
wl_list_remove(&touch->down.link);
wl_list_remove(&touch->motion.link);
free(touch);
}
static void handle_tablet_tool_axis(struct wl_listener *listener, void *data) {
struct sample_state *sample =
wl_container_of(listener, sample, tablet_tool_axis);
static void tablet_axis_notify(struct wl_listener *listener, void *data) {
struct sample_tablet *tablet = wl_container_of(listener, tablet, axis);
struct wlr_tablet_tool_axis_event *event = data;
if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_X) &&
(event->updated_axes & WLR_TABLET_TOOL_AXIS_Y)) {
wlr_cursor_warp_absolute(sample->cursor, &event->tablet->base,
event->x, event->y);
if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_X) != 0) {
tablet->x = event->x;
}
if ((event->updated_axes & WLR_TABLET_TOOL_AXIS_Y) != 0) {
tablet->y = event->y;
}
warp_absolute(tablet->state, &tablet->wlr_tablet->base, tablet->x, tablet->y);
}
static void tablet_destroy_notify(struct wl_listener *listener, void *data) {
struct sample_tablet *tablet = wl_container_of(listener, tablet, destroy);
wl_list_remove(&tablet->destroy.link);
wl_list_remove(&tablet->axis.link);
free(tablet);
}
static void keyboard_key_notify(struct wl_listener *listener, void *data) {
@ -241,6 +283,13 @@ static void keyboard_key_notify(struct wl_listener *listener, void *data) {
}
}
static void keyboard_destroy_notify(struct wl_listener *listener, void *data) {
struct sample_keyboard *keyboard = wl_container_of(listener, keyboard, destroy);
wl_list_remove(&keyboard->destroy.link);
wl_list_remove(&keyboard->key.link);
free(keyboard);
}
static void output_remove_notify(struct wl_listener *listener, void *data) {
struct sample_output *sample_output = wl_container_of(listener, sample_output, destroy);
struct sample_state *sample = sample_output->state;
@ -277,24 +326,49 @@ static void new_output_notify(struct wl_listener *listener, void *data) {
wlr_output_commit(output);
}
static void keyboard_destroy_notify(struct wl_listener *listener, void *data) {
struct sample_keyboard *keyboard = wl_container_of(listener, keyboard, destroy);
wl_list_remove(&keyboard->destroy.link);
wl_list_remove(&keyboard->key.link);
free(keyboard);
}
static void new_input_notify(struct wl_listener *listener, void *data) {
struct wlr_input_device *device = data;
struct sample_state *state = wl_container_of(listener, state, new_input);
switch (device->type) {
case WLR_INPUT_DEVICE_POINTER:
case WLR_INPUT_DEVICE_TOUCH:
case WLR_INPUT_DEVICE_TABLET_TOOL:
wlr_cursor_attach_input_device(state->cursor, device);
case WLR_INPUT_DEVICE_POINTER:;
struct sample_pointer *pointer = calloc(1, sizeof(struct sample_pointer));
pointer->wlr_pointer = wlr_pointer_from_input_device(device);
pointer->state = state;
wl_signal_add(&device->events.destroy, &pointer->destroy);
pointer->destroy.notify = pointer_destroy_notify;
wl_signal_add(&pointer->wlr_pointer->events.motion, &pointer->motion);
pointer->motion.notify = pointer_motion_notify;
wl_signal_add(&pointer->wlr_pointer->events.motion_absolute,
&pointer->motion_absolute);
pointer->motion_absolute.notify = pointer_motion_absolute_notify;
wl_signal_add(&pointer->wlr_pointer->events.button, &pointer->button);
pointer->button.notify = pointer_button_notify;
wl_signal_add(&pointer->wlr_pointer->events.axis, &pointer->axis);
pointer->axis.notify = pointer_axis_notify;
break;
case WLR_INPUT_DEVICE_TOUCH:;
struct sample_touch *touch = calloc(1, sizeof(struct sample_touch));
touch->wlr_touch = wlr_touch_from_input_device(device);
touch->state = state;
wl_list_init(&touch->points);
wl_signal_add(&device->events.destroy, &touch->destroy);
touch->destroy.notify = touch_destroy_notify;
wl_signal_add(&touch->wlr_touch->events.up, &touch->up);
touch->up.notify = touch_up_notify;
wl_signal_add(&touch->wlr_touch->events.down, &touch->down);
touch->down.notify = touch_down_notify;
wl_signal_add(&touch->wlr_touch->events.motion, &touch->motion);
touch->motion.notify = touch_motion_notify;
break;
case WLR_INPUT_DEVICE_TABLET_TOOL:;
struct sample_tablet *tablet = calloc(1, sizeof(struct sample_tablet));
tablet->wlr_tablet = wlr_tablet_from_input_device(device);
tablet->state = state;
wl_signal_add(&device->events.destroy, &tablet->destroy);
tablet->destroy.notify = tablet_destroy_notify;
wl_signal_add(&tablet->wlr_tablet->events.axis, &tablet->axis);
tablet->axis.notify = tablet_axis_notify;
break;
case WLR_INPUT_DEVICE_KEYBOARD:;
struct sample_keyboard *keyboard = calloc(1, sizeof(struct sample_keyboard));
keyboard->wlr_keyboard = wlr_keyboard_from_input_device(device);
@ -330,7 +404,7 @@ int main(int argc, char *argv[]) {
struct sample_state state = {
.default_color = { 0.25f, 0.25f, 0.25f, 1 },
.clear_color = { 0.25f, 0.25f, 0.25f, 1 },
.display = display
.display = display,
};
struct wlr_backend *wlr = wlr_backend_autocreate(display, NULL);
@ -341,39 +415,11 @@ int main(int argc, char *argv[]) {
state.renderer = wlr_renderer_autocreate(wlr);
state.allocator = wlr_allocator_autocreate(wlr, state.renderer);
state.cursor = wlr_cursor_create();
state.layout = wlr_output_layout_create();
wlr_cursor_attach_output_layout(state.cursor, state.layout);
//wlr_cursor_map_to_region(state.cursor, state.config->cursor.mapped_box);
wl_list_init(&state.devices);
wl_list_init(&state.touch_points);
state.cursor = wlr_cursor_create(state.layout);
// pointer events
wl_signal_add(&state.cursor->events.motion, &state.cursor_motion);
state.cursor_motion.notify = handle_cursor_motion;
wl_signal_add(&state.cursor->events.motion_absolute,
&state.cursor_motion_absolute);
state.cursor_motion_absolute.notify = handle_cursor_motion_absolute;
wl_signal_add(&state.cursor->events.button, &state.cursor_button);
state.cursor_button.notify = handle_cursor_button;
wl_signal_add(&state.cursor->events.axis, &state.cursor_axis);
state.cursor_axis.notify = handle_cursor_axis;
// touch events
wl_signal_add(&state.cursor->events.touch_up, &state.touch_up);
state.touch_up.notify = handle_touch_up;
wl_signal_add(&state.cursor->events.touch_down, &state.touch_down);
state.touch_down.notify = handle_touch_down;
wl_signal_add(&state.cursor->events.touch_motion, &state.touch_motion);
state.touch_motion.notify = handle_touch_motion;
wl_signal_add(&state.cursor->events.touch_cancel, &state.touch_cancel);
state.touch_cancel.notify = handle_touch_cancel;
state.input_mapper = wlr_input_mapper_create();
wlr_input_mapper_attach_output_layout(state.input_mapper, state.layout);
wl_signal_add(&wlr->events.new_input, &state.new_input);
state.new_input.notify = new_input_notify;
@ -381,11 +427,6 @@ int main(int argc, char *argv[]) {
wl_signal_add(&wlr->events.new_output, &state.new_output);
state.new_output.notify = new_output_notify;
// tool events
wl_signal_add(&state.cursor->events.tablet_tool_axis,
&state.tablet_tool_axis);
state.tablet_tool_axis.notify = handle_tablet_tool_axis;
state.xcursor_manager = wlr_xcursor_manager_create("default", 24);
if (!state.xcursor_manager) {
wlr_log(WLR_ERROR, "Failed to load left_ptr cursor");
@ -395,8 +436,6 @@ int main(int argc, char *argv[]) {
wlr_xcursor_manager_set_cursor_image(state.xcursor_manager, "left_ptr",
state.cursor);
clock_gettime(CLOCK_MONOTONIC, &state.last_frame);
if (!wlr_backend_start(wlr)) {
wlr_log(WLR_ERROR, "Failed to start backend");
wlr_backend_destroy(wlr);

187
include/wlr/types/wlr_cursor.h
View file

@ -11,129 +11,49 @@
#include <wayland-server-core.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_output.h>
struct wlr_input_device;
/**
* wlr_cursor implements the behavior of the "cursor", that is, the image on the
* screen typically moved about with a mouse or so. It provides tracking for
* this in global coordinates, and integrates with struct wlr_output,
* struct wlr_output_layout, and struct wlr_input_device. You can use it to
* abstract multiple input devices over a single cursor, constrain cursor
* movement to the usable area of a struct wlr_output_layout and communicate
* position updates to the hardware cursor, constrain specific input devices to
* specific outputs or regions of the screen, and so on.
* A helper to keep track of a cursor's position in an output layout and
* manage output cursors.
*
* When the output layout is destroyed, the cursor is destroyed as well.
*/
struct wlr_box;
struct wlr_cursor_state;
struct wlr_cursor {
struct wlr_cursor_state *state;
double x, y;
/**
* The interpretation of these signals is the responsibility of the
* compositor, but some helpers are provided for your benefit. If you
* receive a relative motion event, for example, you may want to call
* wlr_cursor_move(). If you receive an absolute event, call
* wlr_cursor_warp_absolute(). If you pass an input device into these
* functions, it will apply the region/output constraints associated with
* that device to the resulting cursor motion. If an output layout is
* attached, these functions will constrain the resulting cursor motion to
* within the usable space of the output layout.
*
* Re-broadcasting these signals to, for example, a struct wlr_seat, is also
* your responsibility.
*/
struct wl_list output_cursors; // wlr_cursor_output_cursor.link
struct wlr_output_layout *layout;
struct {
struct wl_signal motion;
struct wl_signal motion_absolute;
struct wl_signal button;
struct wl_signal axis;
struct wl_signal frame;
struct wl_signal swipe_begin;
struct wl_signal swipe_update;
struct wl_signal swipe_end;
struct wl_signal pinch_begin;
struct wl_signal pinch_update;
struct wl_signal pinch_end;
struct wl_signal hold_begin;
struct wl_signal hold_end;
struct wl_signal touch_up;
struct wl_signal touch_down;
struct wl_signal touch_motion;
struct wl_signal touch_cancel;
struct wl_signal touch_frame;
struct wl_signal tablet_tool_axis;
struct wl_signal tablet_tool_proximity;
struct wl_signal tablet_tool_tip;
struct wl_signal tablet_tool_button;
struct wl_signal destroy;
} events;
void *data;
// private state
struct wl_listener layout_add;
struct wl_listener layout_destroy;
};
struct wlr_cursor *wlr_cursor_create(void);
struct wlr_cursor_output_cursor {
struct wlr_cursor *cursor;
struct wlr_output_cursor *output_cursor;
struct wl_list link; // wlr_cursor.output_cursors
void wlr_cursor_destroy(struct wlr_cursor *cur);
// private state
struct wl_listener layout_output_destroy;
};
struct wlr_cursor *wlr_cursor_create(struct wlr_output_layout *layout);
void wlr_cursor_destroy(struct wlr_cursor *cursor);
/**
* Warp the cursor to the given x and y in layout coordinates. If x and y are
* out of the layout boundaries or constraints, no warp will happen.
*
* `dev` may be passed to respect device mapping constraints. If `dev` is NULL,
* device mapping constraints will be ignored.
*
* Returns true when the cursor warp was successful.
* Warp the cursor to the given x and y in layout coordinates.
*/
bool wlr_cursor_warp(struct wlr_cursor *cur, struct wlr_input_device *dev,
double lx, double ly);
/**
* Convert absolute 0..1 coordinates to layout coordinates.
*
* `dev` may be passed to respect device mapping constraints. If `dev` is NULL,
* device mapping constraints will be ignored.
*/
void wlr_cursor_absolute_to_layout_coords(struct wlr_cursor *cur,
struct wlr_input_device *dev, double x, double y, double *lx, double *ly);
/**
* Warp the cursor to the given x and y coordinates. If the given point is out
* of the layout boundaries or constraints, the closest point will be used.
* If one coordinate is NAN, it will be ignored.
*
* `dev` may be passed to respect device mapping constraints. If `dev` is NULL,
* device mapping constraints will be ignored.
*/
void wlr_cursor_warp_closest(struct wlr_cursor *cur,
struct wlr_input_device *dev, double x, double y);
/**
* Warp the cursor to the given x and y in absolute 0..1 coordinates. If the
* given point is out of the layout boundaries or constraints, the closest point
* will be used. If one coordinate is NAN, it will be ignored.
*
* `dev` may be passed to respect device mapping constraints. If `dev` is NULL,
* device mapping constraints will be ignored.
*/
void wlr_cursor_warp_absolute(struct wlr_cursor *cur,
struct wlr_input_device *dev, double x, double y);
/**
* Move the cursor in the direction of the given x and y layout coordinates. If
* one coordinate is NAN, it will be ignored.
*
* `dev` may be passed to respect device mapping constraints. If `dev` is NULL,
* device mapping constraints will be ignored.
*/
void wlr_cursor_move(struct wlr_cursor *cur, struct wlr_input_device *dev,
double delta_x, double delta_y);
void wlr_cursor_warp(struct wlr_cursor *cursor, double lx, double ly);
/**
* Set the cursor image. stride is given in bytes. If pixels is NULL, hides the
@ -142,7 +62,7 @@ void wlr_cursor_move(struct wlr_cursor *cur, struct wlr_input_device *dev,
* If scale isn't zero, the image is only set on outputs having the provided
* scale.
*/
void wlr_cursor_set_image(struct wlr_cursor *cur, const uint8_t *pixels,
void wlr_cursor_set_image(struct wlr_cursor *cursor, const uint8_t *pixels,
int32_t stride, uint32_t width, uint32_t height, int32_t hotspot_x,
int32_t hotspot_y, float scale);
@ -151,56 +71,7 @@ void wlr_cursor_set_image(struct wlr_cursor *cur, const uint8_t *pixels,
* image. The surface position is subtracted from the hotspot. A NULL surface
* commit hides the cursor.
*/
void wlr_cursor_set_surface(struct wlr_cursor *cur, struct wlr_surface *surface,
void wlr_cursor_set_surface(struct wlr_cursor *cursor, struct wlr_surface *surface,
int32_t hotspot_x, int32_t hotspot_y);
/**
* Attaches this input device to this cursor. The input device must be one of:
*
* - WLR_INPUT_DEVICE_POINTER
* - WLR_INPUT_DEVICE_TOUCH
* - WLR_INPUT_DEVICE_TABLET_TOOL
*/
void wlr_cursor_attach_input_device(struct wlr_cursor *cur,
struct wlr_input_device *dev);
void wlr_cursor_detach_input_device(struct wlr_cursor *cur,
struct wlr_input_device *dev);
/**
* Uses the given layout to establish the boundaries and movement semantics of
* this cursor. Cursors without an output layout allow infinite movement in any
* direction and do not support absolute input events.
*/
void wlr_cursor_attach_output_layout(struct wlr_cursor *cur,
struct wlr_output_layout *l);
/**
* Attaches this cursor to the given output, which must be among the outputs in
* the current output_layout for this cursor. This call is invalid for a cursor
* without an associated output layout.
*/
void wlr_cursor_map_to_output(struct wlr_cursor *cur,
struct wlr_output *output);
/**
* Maps all input from a specific input device to a given output. The input
* device must be attached to this cursor and the output must be among the
* outputs in the attached output layout.
*/
void wlr_cursor_map_input_to_output(struct wlr_cursor *cur,
struct wlr_input_device *dev, struct wlr_output *output);
/**
* Maps this cursor to an arbitrary region on the associated
* struct wlr_output_layout.
*/
void wlr_cursor_map_to_region(struct wlr_cursor *cur, const struct wlr_box *box);
/**
* Maps inputs from this input device to an arbitrary region on the associated
* struct wlr_output_layout.
*/
void wlr_cursor_map_input_to_region(struct wlr_cursor *cur,
struct wlr_input_device *dev, const struct wlr_box *box);
#endif

379
tinywl/tinywl.c
View file

@ -14,6 +14,7 @@
#include <wlr/types/wlr_compositor.h>
#include <wlr/types/wlr_data_device.h>
#include <wlr/types/wlr_input_device.h>
#include <wlr/types/wlr_input_mapper.h>
#include <wlr/types/wlr_keyboard.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_output_layout.h>
@ -44,13 +45,10 @@ struct tinywl_server {
struct wl_listener new_xdg_surface;
struct wl_list views;
struct wlr_input_mapper *input_mapper;
struct wlr_cursor *cursor;
struct wlr_xcursor_manager *cursor_mgr;
struct wl_listener cursor_motion;
struct wl_listener cursor_motion_absolute;
struct wl_listener cursor_button;
struct wl_listener cursor_axis;
struct wl_listener cursor_frame;
struct wlr_seat *seat;
struct wl_listener new_input;
@ -101,6 +99,18 @@ struct tinywl_keyboard {
struct wl_listener destroy;
};
struct tinywl_pointer {
struct tinywl_server *server;
struct wlr_pointer *wlr_pointer;
struct wl_listener motion;
struct wl_listener motion_absolute;
struct wl_listener button;
struct wl_listener axis;
struct wl_listener frame;
struct wl_listener destroy;
};
static void focus_view(struct tinywl_view *view, struct wlr_surface *surface) {
/* Note: this function only deals with keyboard focus. */
if (view == NULL) {
@ -142,6 +152,34 @@ static void focus_view(struct tinywl_view *view, struct wlr_surface *surface) {
}
}
static struct tinywl_view *desktop_view_at(
struct tinywl_server *server, double lx, double ly,
struct wlr_surface **surface, double *sx, double *sy) {
/* This returns the topmost node in the scene at the given layout coords.
* we only care about surface nodes as we are specifically looking for a
* surface in the surface tree of a tinywl_view. */
struct wlr_scene_node *node = wlr_scene_node_at(
&server->scene->tree.node, lx, ly, sx, sy);
if (node == NULL || node->type != WLR_SCENE_NODE_BUFFER) {
return NULL;
}
struct wlr_scene_buffer *scene_buffer = wlr_scene_buffer_from_node(node);
struct wlr_scene_surface *scene_surface =
wlr_scene_surface_from_buffer(scene_buffer);
if (!scene_surface) {
return NULL;
}
*surface = scene_surface->surface;
/* Find the node corresponding to the tinywl_view at the root of this
* surface tree, it is the only one for which we set the data field. */
struct wlr_scene_tree *tree = node->parent;
while (tree != NULL && tree->node.data == NULL) {
tree = tree->node.parent;
}
return tree->node.data;
}
static void keyboard_handle_modifiers(
struct wl_listener *listener, void *data) {
/* This event is raised when a modifier key, such as shift or alt, is
@ -270,99 +308,6 @@ static void server_new_keyboard(struct tinywl_server *server,
wl_list_insert(&server->keyboards, &keyboard->link);
}
static void server_new_pointer(struct tinywl_server *server,
struct wlr_input_device *device) {
/* We don't do anything special with pointers. All of our pointer handling
* is proxied through wlr_cursor. On another compositor, you might take this
* opportunity to do libinput configuration on the device to set
* acceleration, etc. */
wlr_cursor_attach_input_device(server->cursor, device);
}
static void server_new_input(struct wl_listener *listener, void *data) {
/* This event is raised by the backend when a new input device becomes
* available. */
struct tinywl_server *server =
wl_container_of(listener, server, new_input);
struct wlr_input_device *device = data;
switch (device->type) {
case WLR_INPUT_DEVICE_KEYBOARD:
server_new_keyboard(server, device);
break;
case WLR_INPUT_DEVICE_POINTER:
server_new_pointer(server, device);
break;
default:
break;
}
/* We need to let the wlr_seat know what our capabilities are, which is
* communiciated to the client. In TinyWL we always have a cursor, even if
* there are no pointer devices, so we always include that capability. */
uint32_t caps = WL_SEAT_CAPABILITY_POINTER;
if (!wl_list_empty(&server->keyboards)) {
caps |= WL_SEAT_CAPABILITY_KEYBOARD;
}
wlr_seat_set_capabilities(server->seat, caps);
}
static void seat_request_cursor(struct wl_listener *listener, void *data) {
struct tinywl_server *server = wl_container_of(
listener, server, request_cursor);
/* This event is raised by the seat when a client provides a cursor image */
struct wlr_seat_pointer_request_set_cursor_event *event = data;
struct wlr_seat_client *focused_client =
server->seat->pointer_state.focused_client;
/* This can be sent by any client, so we check to make sure this one is
* actually has pointer focus first. */
if (focused_client == event->seat_client) {
/* Once we've vetted the client, we can tell the cursor to use the
* provided surface as the cursor image. It will set the hardware cursor
* on the output that it's currently on and continue to do so as the
* cursor moves between outputs. */
wlr_cursor_set_surface(server->cursor, event->surface,
event->hotspot_x, event->hotspot_y);
}
}
static void seat_request_set_selection(struct wl_listener *listener, void *data) {
/* This event is raised by the seat when a client wants to set the selection,
* usually when the user copies something. wlroots allows compositors to
* ignore such requests if they so choose, but in tinywl we always honor
*/
struct tinywl_server *server = wl_container_of(
listener, server, request_set_selection);
struct wlr_seat_request_set_selection_event *event = data;
wlr_seat_set_selection(server->seat, event->source, event->serial);
}
static struct tinywl_view *desktop_view_at(
struct tinywl_server *server, double lx, double ly,
struct wlr_surface **surface, double *sx, double *sy) {
/* This returns the topmost node in the scene at the given layout coords.
* we only care about surface nodes as we are specifically looking for a
* surface in the surface tree of a tinywl_view. */
struct wlr_scene_node *node = wlr_scene_node_at(
&server->scene->tree.node, lx, ly, sx, sy);
if (node == NULL || node->type != WLR_SCENE_NODE_BUFFER) {
return NULL;
}
struct wlr_scene_buffer *scene_buffer = wlr_scene_buffer_from_node(node);
struct wlr_scene_surface *scene_surface =
wlr_scene_surface_from_buffer(scene_buffer);
if (!scene_surface) {
return NULL;
}
*surface = scene_surface->surface;
/* Find the node corresponding to the tinywl_view at the root of this
* surface tree, it is the only one for which we set the data field. */
struct wlr_scene_tree *tree = node->parent;
while (tree != NULL && tree->node.data == NULL) {
tree = tree->node.parent;
}
return tree->node.data;
}
static void reset_cursor_mode(struct tinywl_server *server) {
/* Reset the cursor mode to passthrough. */
server->cursor_mode = TINYWL_CURSOR_PASSTHROUGH;
@ -429,7 +374,13 @@ static void process_cursor_resize(struct tinywl_server *server, uint32_t time) {
wlr_xdg_toplevel_set_size(view->xdg_toplevel, new_width, new_height);
}
static void process_cursor_motion(struct tinywl_server *server, uint32_t time) {
static void process_cursor_motion(struct tinywl_server *server,
struct wlr_input_device *device, uint32_t time, double lx, double ly) {
/* Move the cursor to the closest point in the output layout, ensuring that
* it doesn't go outside of it. */
wlr_input_mapper_closest_point(server->input_mapper, device, lx, ly, &lx, &ly);
wlr_cursor_warp(server->cursor, lx, ly);
/* If the mode is non-passthrough, delegate to those functions. */
if (server->cursor_mode == TINYWL_CURSOR_MOVE) {
process_cursor_move(server, time);
@ -443,8 +394,7 @@ static void process_cursor_motion(struct tinywl_server *server, uint32_t time) {
double sx, sy;
struct wlr_seat *seat = server->seat;
struct wlr_surface *surface = NULL;
struct tinywl_view *view = desktop_view_at(server,
server->cursor->x, server->cursor->y, &surface, &sx, &sy);
struct tinywl_view *view = desktop_view_at(server, lx, ly, &surface, &sx, &sy);
if (!view) {
/* If there's no view under the cursor, set the cursor image to a
* default. This is what makes the cursor image appear when you move it
@ -473,51 +423,56 @@ static void process_cursor_motion(struct tinywl_server *server, uint32_t time) {
}
}
static void server_cursor_motion(struct wl_listener *listener, void *data) {
/* This event is forwarded by the cursor when a pointer emits a _relative_
* pointer motion event (i.e. a delta) */
struct tinywl_server *server =
wl_container_of(listener, server, cursor_motion);
static void pointer_handle_motion(struct wl_listener *listener, void *data) {
/* This event is raised on _relative_ pointer motion (i.e. a delta). */
struct tinywl_pointer *pointer = wl_container_of(listener, pointer, motion);
struct wlr_pointer_motion_event *event = data;
/* The cursor doesn't move unless we tell it to. The cursor automatically
* handles constraining the motion to the output layout, as well as any
* special configuration applied for the specific input device which
* generated the event. You can pass NULL for the device if you want to move
* the cursor around without any input. */
wlr_cursor_move(server->cursor, &event->pointer->base,
event->delta_x, event->delta_y);
process_cursor_motion(server, event->time_msec);
struct tinywl_server *server = pointer->server;
double lx = server->cursor->x + event->delta_x;
double ly = server->cursor->y + event->delta_y;
process_cursor_motion(server, &pointer->wlr_pointer->base,
event->time_msec, lx, ly);
}
static void server_cursor_motion_absolute(
static void pointer_handle_motion_absolute(
struct wl_listener *listener, void *data) {
/* This event is forwarded by the cursor when a pointer emits an _absolute_
* motion event, from 0..1 on each axis. This happens, for example, when
* wlroots is running under a Wayland window rather than KMS+DRM, and you
* move the mouse over the window. You could enter the window from any edge,
* so we have to warp the mouse there. There is also some hardware which
* emits these events. */
struct tinywl_server *server =
wl_container_of(listener, server, cursor_motion_absolute);
/* This event is raised on _absolute_ pointer motion, in 0..1 range on
* each axis. This happens, for example, when wlroots is running under
* a Wayland window rather than KMS+DRM, and you move the mouse over
* the window. You could enter the window from any edge, so we have to warp
* the mouse there. There is also some hardware which emits these events. */
struct tinywl_pointer *pointer =
wl_container_of(listener, pointer, motion_absolute);
struct wlr_pointer_motion_absolute_event *event = data;
wlr_cursor_warp_absolute(server->cursor, &event->pointer->base, event->x,
event->y);
process_cursor_motion(server, event->time_msec);
struct tinywl_server *server = pointer->server;
/* Convert absolute coordinates in 0..1 range to layout-local
* coordinates. */
struct wlr_input_device *device = &pointer->wlr_pointer->base;
double lx, ly;
wlr_input_mapper_absolute_to_layout(server->input_mapper,
device, event->x, event->y, &lx, &ly);
process_cursor_motion(server, device, event->time_msec, lx, ly);
}
static void server_cursor_button(struct wl_listener *listener, void *data) {
/* This event is forwarded by the cursor when a pointer emits a button
* event. */
struct tinywl_server *server =
wl_container_of(listener, server, cursor_button);
static void pointer_handle_button(struct wl_listener *listener, void *data) {
/* This event is raised a button is pressed or released. */
struct tinywl_pointer *pointer = wl_container_of(listener, pointer, button);
struct wlr_pointer_button_event *event = data;
struct tinywl_server *server = pointer->server;
/* Notify the client with pointer focus that a button press has occurred */
wlr_seat_pointer_notify_button(server->seat,
event->time_msec, event->button, event->state);
event->time_msec, event->button, event->state);
double sx, sy;
struct wlr_surface *surface = NULL;
struct tinywl_view *view = desktop_view_at(server,
server->cursor->x, server->cursor->y, &surface, &sx, &sy);
server->cursor->x, server->cursor->y, &surface, &sx, &sy);
if (event->state == WLR_BUTTON_RELEASED) {
/* If you released any buttons, we exit interactive move/resize mode. */
reset_cursor_mode(server);
@ -527,27 +482,120 @@ static void server_cursor_button(struct wl_listener *listener, void *data) {
}
}
static void server_cursor_axis(struct wl_listener *listener, void *data) {
/* This event is forwarded by the cursor when a pointer emits an axis event,
* for example when you move the scroll wheel. */
struct tinywl_server *server =
wl_container_of(listener, server, cursor_axis);
static void pointer_handle_axis(struct wl_listener *listener, void *data) {
/* This event is raised, for example, when you roll the scroll wheel. */
struct tinywl_pointer *pointer = wl_container_of(listener, pointer, axis);
struct wlr_pointer_axis_event *event = data;
/* Notify the client with pointer focus of the axis event. */
wlr_seat_pointer_notify_axis(server->seat,
event->time_msec, event->orientation, event->delta,
event->delta_discrete, event->source);
wlr_seat_pointer_notify_axis(pointer->server->seat,
event->time_msec, event->orientation, event->delta,
event->delta_discrete, event->source);
}
static void server_cursor_frame(struct wl_listener *listener, void *data) {
/* This event is forwarded by the cursor when a pointer emits an frame
* event. Frame events are sent after regular pointer events to group
* multiple events together. For instance, two axis events may happen at the
* same time, in which case a frame event won't be sent in between. */
struct tinywl_server *server =
wl_container_of(listener, server, cursor_frame);
static void pointer_handle_frame(struct wl_listener *listener, void *data) {
/* This event is sent after regular pointer events to group multiple
* events together. For instance, two axis events may happen at the same
* time, in which case a frame event won't be sent in between. */
struct tinywl_pointer *pointer = wl_container_of(listener, pointer, frame);
/* Notify the client with pointer focus of the frame event. */
wlr_seat_pointer_notify_frame(server->seat);
wlr_seat_pointer_notify_frame(pointer->server->seat);
}
static void pointer_handle_destroy(struct wl_listener *listener, void *data) {
/* This event is raised by the pointer base wlr_input_device to signal
* the destruction of the wlr_pointer. It will no longer receive events
* and should be destroyed.
*/
struct tinywl_pointer *pointer =
wl_container_of(listener, pointer, destroy);
wl_list_remove(&pointer->motion.link);
wl_list_remove(&pointer->motion_absolute.link);
wl_list_remove(&pointer->button.link);
wl_list_remove(&pointer->axis.link);
wl_list_remove(&pointer->frame.link);
wl_list_remove(&pointer->destroy.link);
free(pointer);
}
static void server_new_pointer(struct tinywl_server *server,
struct wlr_input_device *device) {
struct wlr_pointer *wlr_pointer = wlr_pointer_from_input_device(device);
struct tinywl_pointer *pointer =
calloc(1, sizeof(struct tinywl_pointer));
pointer->server = server;
pointer->wlr_pointer = wlr_pointer;
/* Here we set up listeners for pointer events. */
pointer->motion.notify = pointer_handle_motion;
wl_signal_add(&wlr_pointer->events.motion, &pointer->motion);
pointer->motion_absolute.notify = pointer_handle_motion_absolute;
wl_signal_add(&wlr_pointer->events.motion_absolute,
&pointer->motion_absolute);
pointer->button.notify = pointer_handle_button;
wl_signal_add(&wlr_pointer->events.button, &pointer->button);
pointer->axis.notify = pointer_handle_axis;
wl_signal_add(&wlr_pointer->events.axis, &pointer->axis);
pointer->frame.notify = pointer_handle_frame;
wl_signal_add(&wlr_pointer->events.frame, &pointer->frame);
pointer->destroy.notify = pointer_handle_destroy;
wl_signal_add(&device->events.destroy, &pointer->destroy);
}
static void server_new_input(struct wl_listener *listener, void *data) {
/* This event is raised by the backend when a new input device becomes
* available. */
struct tinywl_server *server =
wl_container_of(listener, server, new_input);
struct wlr_input_device *device = data;
switch (device->type) {
case WLR_INPUT_DEVICE_KEYBOARD:
server_new_keyboard(server, device);
break;
case WLR_INPUT_DEVICE_POINTER:
server_new_pointer(server, device);
break;
default:
break;
}
/* We need to let the wlr_seat know what our capabilities are, which is
* communiciated to the client. In TinyWL we always have a cursor, even if
* there are no pointer devices, so we always include that capability. */
uint32_t caps = WL_SEAT_CAPABILITY_POINTER;
if (!wl_list_empty(&server->keyboards)) {
caps |= WL_SEAT_CAPABILITY_KEYBOARD;
}
wlr_seat_set_capabilities(server->seat, caps);
}
static void seat_request_cursor(struct wl_listener *listener, void *data) {
struct tinywl_server *server = wl_container_of(
listener, server, request_cursor);
/* This event is raised by the seat when a client provides a cursor image */
struct wlr_seat_pointer_request_set_cursor_event *event = data;
struct wlr_seat_client *focused_client =
server->seat->pointer_state.focused_client;
/* This can be sent by any client, so we check to make sure this one is
* actually has pointer focus first. */
if (focused_client == event->seat_client) {
/* Once we've vetted the client, we can tell the cursor to use the
* provided surface as the cursor image. It will set the hardware cursor
* on the output that it's currently on and continue to do so as the
* cursor moves between outputs. */
wlr_cursor_set_surface(server->cursor, event->surface,
event->hotspot_x, event->hotspot_y);
}
}
static void seat_request_set_selection(struct wl_listener *listener, void *data) {
/* This event is raised by the seat when a client wants to set the selection,
* usually when the user copies something. wlroots allows compositors to
* ignore such requests if they so choose, but in tinywl we always honor
*/
struct tinywl_server *server = wl_container_of(
listener, server, request_set_selection);
struct wlr_seat_request_set_selection_event *event = data;
wlr_seat_set_selection(server->seat, event->source, event->serial);
}
static void output_frame(struct wl_listener *listener, void *data) {
@ -913,12 +961,18 @@ int main(int argc, char *argv[]) {
wl_signal_add(&server.xdg_shell->events.new_surface,
&server.new_xdg_surface);
/* Create an input mapper, which is a wlroots utility for converting
* absolute coordinates received from input devices to layout-local
* coordinates and applying coordinate constraints. */
server.input_mapper = wlr_input_mapper_create();
wlr_input_mapper_attach_output_layout(server.input_mapper,
server.output_layout);
/*
* Creates a cursor, which is a wlroots utility for tracking the cursor
* image shown on screen.
*/
server.cursor = wlr_cursor_create();
wlr_cursor_attach_output_layout(server.cursor, server.output_layout);
server.cursor = wlr_cursor_create(server.output_layout);
/* Creates an xcursor manager, another wlroots utility which loads up
* Xcursor themes to source cursor images from and makes sure that cursor
@ -927,30 +981,7 @@ int main(int argc, char *argv[]) {
server.cursor_mgr = wlr_xcursor_manager_create(NULL, 24);
wlr_xcursor_manager_load(server.cursor_mgr, 1);
/*
* wlr_cursor *only* displays an image on screen. It does not move around
* when the pointer moves. However, we can attach input devices to it, and
* it will generate aggregate events for all of them. In these events, we
* can choose how we want to process them, forwarding them to clients and
* moving the cursor around. More detail on this process is described in my
* input handling blog post:
*
* https://drewdevault.com/2018/07/17/Input-handling-in-wlroots.html
*
* And more comments are sprinkled throughout the notify functions above.
*/
server.cursor_mode = TINYWL_CURSOR_PASSTHROUGH;
server.cursor_motion.notify = server_cursor_motion;
wl_signal_add(&server.cursor->events.motion, &server.cursor_motion);
server.cursor_motion_absolute.notify = server_cursor_motion_absolute;
wl_signal_add(&server.cursor->events.motion_absolute,
&server.cursor_motion_absolute);
server.cursor_button.notify = server_cursor_button;
wl_signal_add(&server.cursor->events.button, &server.cursor_button);
server.cursor_axis.notify = server_cursor_axis;
wl_signal_add(&server.cursor->events.axis, &server.cursor_axis);
server.cursor_frame.notify = server_cursor_frame;
wl_signal_add(&server.cursor->events.frame, &server.cursor_frame);
/*
* Configures a seat, which is a single "seat" at which a user sits and

936
types/wlr_cursor.c
View file

@ -1,363 +1,121 @@
#include <assert.h>
#include <limits.h>
#include <math.h>
#include <stdlib.h>
#include <wayland-server-core.h>
#include <wlr/types/wlr_cursor.h>
#include <wlr/types/wlr_input_device.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_pointer.h>
#include <wlr/types/wlr_tablet_tool.h>
#include <wlr/types/wlr_touch.h>
#include <wlr/util/box.h>
#include <wlr/util/log.h>
struct wlr_cursor_device {
struct wlr_cursor *cursor;
struct wlr_input_device *device;
struct wl_list link;
struct wlr_output *mapped_output;
struct wlr_box mapped_box; // empty if unset
struct wl_listener motion;
struct wl_listener motion_absolute;
struct wl_listener button;
struct wl_listener axis;
struct wl_listener frame;
struct wl_listener swipe_begin;
struct wl_listener swipe_update;
struct wl_listener swipe_end;
struct wl_listener pinch_begin;
struct wl_listener pinch_update;
struct wl_listener pinch_end;
struct wl_listener hold_begin;
struct wl_listener hold_end;
struct wl_listener touch_down;
struct wl_listener touch_up;
struct wl_listener touch_motion;
struct wl_listener touch_cancel;
struct wl_listener touch_frame;
struct wl_listener tablet_tool_axis;
struct wl_listener tablet_tool_proximity;
struct wl_listener tablet_tool_tip;
struct wl_listener tablet_tool_button;
struct wl_listener destroy;
};
struct wlr_cursor_output_cursor {
struct wlr_cursor *cursor;
struct wlr_output_cursor *output_cursor;
struct wl_list link;
struct wl_listener layout_output_destroy;
};
struct wlr_cursor_state {
struct wlr_cursor *cursor;
struct wl_list devices; // wlr_cursor_device::link
struct wl_list output_cursors; // wlr_cursor_output_cursor::link
struct wlr_output_layout *layout;
struct wlr_output *mapped_output;
struct wlr_box mapped_box; // empty if unset
struct wl_listener layout_add;
struct wl_listener layout_change;
struct wl_listener layout_destroy;
};
struct wlr_cursor *wlr_cursor_create(void) {
struct wlr_cursor *cur = calloc(1, sizeof(struct wlr_cursor));
if (!cur) {
wlr_log(WLR_ERROR, "Failed to allocate wlr_cursor");
return NULL;
}
cur->state = calloc(1, sizeof(struct wlr_cursor_state));
if (!cur->state) {
wlr_log(WLR_ERROR, "Failed to allocate wlr_cursor_state");
free(cur);
return NULL;
}
cur->state->cursor = cur;
cur->state->mapped_output = NULL;
wl_list_init(&cur->state->devices);
wl_list_init(&cur->state->output_cursors);
// pointer signals
wl_signal_init(&cur->events.motion);
wl_signal_init(&cur->events.motion_absolute);
wl_signal_init(&cur->events.button);
wl_signal_init(&cur->events.axis);
wl_signal_init(&cur->events.frame);
wl_signal_init(&cur->events.swipe_begin);
wl_signal_init(&cur->events.swipe_update);
wl_signal_init(&cur->events.swipe_end);
wl_signal_init(&cur->events.pinch_begin);
wl_signal_init(&cur->events.pinch_update);
wl_signal_init(&cur->events.pinch_end);
wl_signal_init(&cur->events.hold_begin);
wl_signal_init(&cur->events.hold_end);
// touch signals
wl_signal_init(&cur->events.touch_up);
wl_signal_init(&cur->events.touch_down);
wl_signal_init(&cur->events.touch_motion);
wl_signal_init(&cur->events.touch_cancel);
wl_signal_init(&cur->events.touch_frame);
// tablet tool signals
wl_signal_init(&cur->events.tablet_tool_tip);
wl_signal_init(&cur->events.tablet_tool_axis);
wl_signal_init(&cur->events.tablet_tool_button);
wl_signal_init(&cur->events.tablet_tool_proximity);
cur->x = 100;
cur->y = 100;
return cur;
}
static void output_cursor_destroy(
struct wlr_cursor_output_cursor *output_cursor) {
static void output_cursor_destroy(struct wlr_cursor_output_cursor *output_cursor) {
wl_list_remove(&output_cursor->layout_output_destroy.link);
wl_list_remove(&output_cursor->link);
wlr_output_cursor_destroy(output_cursor->output_cursor);
free(output_cursor);
}
static void cursor_detach_output_layout(struct wlr_cursor *cur) {
if (!cur->state->layout) {
static void handle_layout_destroy(struct wl_listener *listener, void *data) {
struct wlr_cursor *cursor = wl_container_of(listener, cursor, layout_destroy);
wlr_cursor_destroy(cursor);
}
static void handle_layout_output_destroy(struct wl_listener *listener, void *data) {
struct wlr_cursor_output_cursor *output_cursor =
wl_container_of(listener, output_cursor, layout_output_destroy);
output_cursor_destroy(output_cursor);
}
static void layout_add(struct wlr_cursor *cursor, struct wlr_output_layout_output *l_output) {
struct wlr_cursor_output_cursor *output_cursor = calloc(1, sizeof(*output_cursor));
if (output_cursor == NULL) {
wlr_log(WLR_ERROR, "Failed to allocate wlr_cursor_output_cursor");
return;
}
output_cursor->cursor = cursor;
output_cursor->output_cursor = wlr_output_cursor_create(l_output->output);
if (output_cursor->output_cursor == NULL) {
wlr_log(WLR_ERROR, "Failed to allocate wlr_output_cursor");
free(output_cursor);
return;
}
output_cursor->layout_output_destroy.notify = handle_layout_output_destroy;
wl_signal_add(&l_output->events.destroy, &output_cursor->layout_output_destroy);
wl_list_insert(&cursor->output_cursors, &output_cursor->link);
}
static void handle_layout_add(struct wl_listener *listener, void *data) {
struct wlr_cursor *cursor = wl_container_of(listener, cursor, layout_add);
struct wlr_output_layout_output *l_output = data;
layout_add(cursor, l_output);
}
struct wlr_cursor *wlr_cursor_create(struct wlr_output_layout *layout) {
struct wlr_cursor *cursor = calloc(1, sizeof(*cursor));
if (!cursor) {
wlr_log(WLR_ERROR, "Failed to allocate wlr_cursor");
return NULL;
}
wl_list_init(&cursor->output_cursors);
wl_signal_init(&cursor->events.destroy);
wl_signal_add(&layout->events.add, &cursor->layout_add);
cursor->layout_add.notify = handle_layout_add;
wl_signal_add(&layout->events.destroy, &cursor->layout_destroy);
cursor->layout_destroy.notify = handle_layout_destroy;
cursor->layout = layout;
struct wlr_output_layout_output *l_output;
wl_list_for_each(l_output, &layout->outputs, link) {
layout_add(cursor, l_output);
}
return cursor;
}
void wlr_cursor_destroy(struct wlr_cursor *cursor) {
wl_signal_emit_mutable(&cursor->events.destroy, NULL);
struct wlr_cursor_output_cursor *output_cursor, *tmp;
wl_list_for_each_safe(output_cursor, tmp, &cur->state->output_cursors,
link) {
wl_list_for_each_safe(output_cursor, tmp, &cursor->output_cursors, link) {
output_cursor_destroy(output_cursor);
}
wl_list_remove(&cur->state->layout_destroy.link);
wl_list_remove(&cur->state->layout_change.link);
wl_list_remove(&cur->state->layout_add.link);
wl_list_remove(&cursor->layout_destroy.link);
wl_list_remove(&cursor->layout_add.link);
cur->state->layout = NULL;
free(cursor);
}
static void cursor_device_destroy(struct wlr_cursor_device *c_device) {
struct wlr_input_device *dev = c_device->device;
if (dev->type == WLR_INPUT_DEVICE_POINTER) {
wl_list_remove(&c_device->motion.link);
wl_list_remove(&c_device->motion_absolute.link);
wl_list_remove(&c_device->button.link);
wl_list_remove(&c_device->axis.link);
wl_list_remove(&c_device->frame.link);
wl_list_remove(&c_device->swipe_begin.link);
wl_list_remove(&c_device->swipe_update.link);
wl_list_remove(&c_device->swipe_end.link);
wl_list_remove(&c_device->pinch_begin.link);
wl_list_remove(&c_device->pinch_update.link);
wl_list_remove(&c_device->pinch_end.link);
wl_list_remove(&c_device->hold_begin.link);
wl_list_remove(&c_device->hold_end.link);
} else if (dev->type == WLR_INPUT_DEVICE_TOUCH) {
wl_list_remove(&c_device->touch_down.link);
wl_list_remove(&c_device->touch_up.link);
wl_list_remove(&c_device->touch_motion.link);
wl_list_remove(&c_device->touch_cancel.link);
wl_list_remove(&c_device->touch_frame.link);
} else if (dev->type == WLR_INPUT_DEVICE_TABLET_TOOL) {
wl_list_remove(&c_device->tablet_tool_axis.link);
wl_list_remove(&c_device->tablet_tool_proximity.link);
wl_list_remove(&c_device->tablet_tool_tip.link);
wl_list_remove(&c_device->tablet_tool_button.link);
}
wl_list_remove(&c_device->link);
wl_list_remove(&c_device->destroy.link);
free(c_device);
}
void wlr_cursor_destroy(struct wlr_cursor *cur) {
cursor_detach_output_layout(cur);
struct wlr_cursor_device *device, *device_tmp = NULL;
wl_list_for_each_safe(device, device_tmp, &cur->state->devices, link) {
cursor_device_destroy(device);
}
free(cur->state);
free(cur);
}
static struct wlr_cursor_device *get_cursor_device(struct wlr_cursor *cur,
struct wlr_input_device *device) {
struct wlr_cursor_device *c_device, *ret = NULL;
wl_list_for_each(c_device, &cur->state->devices, link) {
if (c_device->device == device) {
ret = c_device;
break;
}
}
return ret;
}
static void cursor_warp_unchecked(struct wlr_cursor *cur,
double lx, double ly) {
assert(cur->state->layout);
void wlr_cursor_warp(struct wlr_cursor *cursor, double lx, double ly) {
if (!isfinite(lx) || !isfinite(ly)) {
assert(false);
return;
}
struct wlr_cursor_output_cursor *output_cursor;
wl_list_for_each(output_cursor, &cur->state->output_cursors, link) {
wl_list_for_each(output_cursor, &cursor->output_cursors, link) {
double output_x = lx, output_y = ly;
wlr_output_layout_output_coords(cur->state->layout,
wlr_output_layout_output_coords(cursor->layout,
output_cursor->output_cursor->output, &output_x, &output_y);
wlr_output_cursor_move(output_cursor->output_cursor,
output_x, output_y);
}
cur->x = lx;
cur->y = ly;
cursor->x = lx;
cursor->y = ly;
}
/**
* Get the most specific mapping box for the device in this order:
*
* 1. device geometry mapping
* 2. device output mapping
* 3. cursor geometry mapping
* 4. cursor output mapping
*
* Absolute movement for touch and pen devices will be relative to this box and
* pointer movement will be constrained to this box.
*
* If none of these are set, the box is empty and absolute movement should be
* relative to the extents of the layout.
*/
static void get_mapping(struct wlr_cursor *cur,
struct wlr_input_device *dev, struct wlr_box *box) {
assert(cur->state->layout);
memset(box, 0, sizeof(*box));
struct wlr_cursor_device *c_device = get_cursor_device(cur, dev);
if (c_device) {
if (!wlr_box_empty(&c_device->mapped_box)) {
*box = c_device->mapped_box;
return;
}
if (c_device->mapped_output) {
wlr_output_layout_get_box(cur->state->layout,
c_device->mapped_output, box);
return;
}
}
if (!wlr_box_empty(&cur->state->mapped_box)) {
*box = cur->state->mapped_box;
return;
}
if (cur->state->mapped_output) {
wlr_output_layout_get_box(cur->state->layout,
cur->state->mapped_output, box);
return;
}
}
bool wlr_cursor_warp(struct wlr_cursor *cur, struct wlr_input_device *dev,
double lx, double ly) {
assert(cur->state->layout);
bool result = false;
struct wlr_box mapping;
get_mapping(cur, dev, &mapping);
if (!wlr_box_empty(&mapping)) {
result = wlr_box_contains_point(&mapping, lx, ly);
} else {
result = wlr_output_layout_contains_point(cur->state->layout, NULL,
lx, ly);
}
if (result) {
cursor_warp_unchecked(cur, lx, ly);
}
return result;
}
void wlr_cursor_warp_closest(struct wlr_cursor *cur,
struct wlr_input_device *dev, double lx, double ly) {
struct wlr_box mapping;
get_mapping(cur, dev, &mapping);
if (!wlr_box_empty(&mapping)) {
wlr_box_closest_point(&mapping, lx, ly, &lx, &ly);
} else if (!wl_list_empty(&cur->state->layout->outputs)) {
wlr_output_layout_closest_point(cur->state->layout, NULL, lx, ly,
&lx, &ly);
} else {
/*
* There is no mapping box for the input device and the
* output layout is empty. This can happen for example
* when external monitors are turned off/disconnected.
* In this case, all (x,y) points are equally invalid,
* so leave the cursor in its current location (better
* from a user standpoint than warping it to (0,0)).
*/
return;
}
cursor_warp_unchecked(cur, lx, ly);
}
void wlr_cursor_absolute_to_layout_coords(struct wlr_cursor *cur,
struct wlr_input_device *dev, double x, double y,
double *lx, double *ly) {
assert(cur->state->layout);
struct wlr_box mapping;
get_mapping(cur, dev, &mapping);
if (wlr_box_empty(&mapping)) {
wlr_output_layout_get_box(cur->state->layout, NULL, &mapping);
}
*lx = !isnan(x) ? mapping.width * x + mapping.x : cur->x;
*ly = !isnan(y) ? mapping.height * y + mapping.y : cur->y;
}
void wlr_cursor_warp_absolute(struct wlr_cursor *cur,
struct wlr_input_device *dev, double x, double y) {
assert(cur->state->layout);
double lx, ly;
wlr_cursor_absolute_to_layout_coords(cur, dev, x, y, &lx, &ly);
wlr_cursor_warp_closest(cur, dev, lx, ly);
}
void wlr_cursor_move(struct wlr_cursor *cur, struct wlr_input_device *dev,
double delta_x, double delta_y) {
assert(cur->state->layout);
double lx = !isnan(delta_x) ? cur->x + delta_x : cur->x;
double ly = !isnan(delta_y) ? cur->y + delta_y : cur->y;
wlr_cursor_warp_closest(cur, dev, lx, ly);
}
void wlr_cursor_set_image(struct wlr_cursor *cur, const uint8_t *pixels,
void wlr_cursor_set_image(struct wlr_cursor *cursor, const uint8_t *pixels,
int32_t stride, uint32_t width, uint32_t height, int32_t hotspot_x,
int32_t hotspot_y, float scale) {
struct wlr_cursor_output_cursor *output_cursor;
wl_list_for_each(output_cursor, &cur->state->output_cursors, link) {
wl_list_for_each(output_cursor, &cursor->output_cursors, link) {
float output_scale = output_cursor->output_cursor->output->scale;
if (scale > 0 && output_scale != scale) {
continue;
@ -368,549 +126,11 @@ void wlr_cursor_set_image(struct wlr_cursor *cur, const uint8_t *pixels,
}
}
void wlr_cursor_set_surface(struct wlr_cursor *cur, struct wlr_surface *surface,
void wlr_cursor_set_surface(struct wlr_cursor *cursor, struct wlr_surface *surface,
int32_t hotspot_x, int32_t hotspot_y) {
struct wlr_cursor_output_cursor *output_cursor;
wl_list_for_each(output_cursor, &cur->state->output_cursors, link) {
wl_list_for_each(output_cursor, &cursor->output_cursors, link) {
wlr_output_cursor_set_surface(output_cursor->output_cursor, surface,
hotspot_x, hotspot_y);
}
}
static void handle_pointer_motion(struct wl_listener *listener, void *data) {
struct wlr_pointer_motion_event *event = data;
struct wlr_cursor_device *device =
wl_container_of(listener, device, motion);
wl_signal_emit_mutable(&device->cursor->events.motion, event);
}
static void apply_output_transform(double *x, double *y,
enum wl_output_transform transform) {
double dx = 0.0, dy = 0.0;
double width = 1.0, height = 1.0;
switch (transform) {
case WL_OUTPUT_TRANSFORM_NORMAL:
dx = *x;
dy = *y;
break;
case WL_OUTPUT_TRANSFORM_90:
dx = height - *y;
dy = *x;
break;
case WL_OUTPUT_TRANSFORM_180:
dx = width - *x;
dy = height - *y;
break;
case WL_OUTPUT_TRANSFORM_270:
dx = *y;
dy = width - *x;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED:
dx = width - *x;
dy = *y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_90:
dx = *y;
dy = *x;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_180:
dx = *x;
dy = height - *y;
break;
case WL_OUTPUT_TRANSFORM_FLIPPED_270:
dx = height - *y;
dy = width - *x;
break;
}
*x = dx;
*y = dy;
}
static struct wlr_output *get_mapped_output(struct wlr_cursor_device *cursor_device) {
if (cursor_device->mapped_output) {
return cursor_device->mapped_output;
}
struct wlr_cursor *cursor = cursor_device->cursor;
assert(cursor);
if (cursor->state->mapped_output) {
return cursor->state->mapped_output;
}
return NULL;
}
static void handle_pointer_motion_absolute(struct wl_listener *listener,
void *data) {
struct wlr_pointer_motion_absolute_event *event = data;
struct wlr_cursor_device *device =
wl_container_of(listener, device, motion_absolute);
struct wlr_output *output =
get_mapped_output(device);
if (output) {
apply_output_transform(&event->x, &event->y, output->transform);
}
wl_signal_emit_mutable(&device->cursor->events.motion_absolute, event);
}
static void handle_pointer_button(struct wl_listener *listener, void *data) {
struct wlr_pointer_button_event *event = data;
struct wlr_cursor_device *device =
wl_container_of(listener, device, button);
wl_signal_emit_mutable(&device->cursor->events.button, event);
}
static void handle_pointer_axis(struct wl_listener *listener, void *data) {
struct wlr_pointer_axis_event *event = data;
struct wlr_cursor_device *device = wl_container_of(listener, device, axis);
wl_signal_emit_mutable(&device->cursor->events.axis, event);
}
static void handle_pointer_frame(struct wl_listener *listener, void *data) {
struct wlr_cursor_device *device = wl_container_of(listener, device, frame);
wl_signal_emit_mutable(&device->cursor->events.frame, device->cursor);
}
static void handle_pointer_swipe_begin(struct wl_listener *listener, void *data) {
struct wlr_pointer_swipe_begin_event *event = data;
struct wlr_cursor_device *device = wl_container_of(listener, device, swipe_begin);
wl_signal_emit_mutable(&device->cursor->events.swipe_begin, event);
}
static void handle_pointer_swipe_update(struct wl_listener *listener, void *data) {
struct wlr_pointer_swipe_update_event *event = data;
struct wlr_cursor_device *device = wl_container_of(listener, device, swipe_update);
wl_signal_emit_mutable(&device->cursor->events.swipe_update, event);
}
static void handle_pointer_swipe_end(struct wl_listener *listener, void *data) {
struct wlr_pointer_swipe_end_event *event = data;
struct wlr_cursor_device *device = wl_container_of(listener, device, swipe_end);
wl_signal_emit_mutable(&device->cursor->events.swipe_end, event);
}
static void handle_pointer_pinch_begin(struct wl_listener *listener, void *data) {
struct wlr_pointer_pinch_begin_event *event = data;
struct wlr_cursor_device *device = wl_container_of(listener, device, pinch_begin);
wl_signal_emit_mutable(&device->cursor->events.pinch_begin, event);
}
static void handle_pointer_pinch_update(struct wl_listener *listener, void *data) {
struct wlr_pointer_pinch_update_event *event = data;
struct wlr_cursor_device *device = wl_container_of(listener, device, pinch_update);
wl_signal_emit_mutable(&device->cursor->events.pinch_update, event);
}
static void handle_pointer_pinch_end(struct wl_listener *listener, void *data) {
struct wlr_pointer_pinch_end_event *event = data;
struct wlr_cursor_device *device = wl_container_of(listener, device, pinch_end);
wl_signal_emit_mutable(&device->cursor->events.pinch_end, event);
}
static void handle_pointer_hold_begin(struct wl_listener *listener, void *data) {
struct wlr_pointer_hold_begin_event *event = data;
struct wlr_cursor_device *device = wl_container_of(listener, device, hold_begin);
wl_signal_emit_mutable(&device->cursor->events.hold_begin, event);
}
static void handle_pointer_hold_end(struct wl_listener *listener, void *data) {
struct wlr_pointer_hold_end_event *event = data;
struct wlr_cursor_device *device = wl_container_of(listener, device, hold_end);
wl_signal_emit_mutable(&device->cursor->events.hold_end, event);
}
static void handle_touch_up(struct wl_listener *listener, void *data) {
struct wlr_touch_up_event *event = data;
struct wlr_cursor_device *device;
device = wl_container_of(listener, device, touch_up);
wl_signal_emit_mutable(&device->cursor->events.touch_up, event);
}
static void handle_touch_down(struct wl_listener *listener, void *data) {
struct wlr_touch_down_event *event = data;
struct wlr_cursor_device *device;
device = wl_container_of(listener, device, touch_down);
struct wlr_output *output =
get_mapped_output(device);
if (output) {
apply_output_transform(&event->x, &event->y, output->transform);
}
wl_signal_emit_mutable(&device->cursor->events.touch_down, event);
}
static void handle_touch_motion(struct wl_listener *listener, void *data) {
struct wlr_touch_motion_event *event = data;
struct wlr_cursor_device *device;
device = wl_container_of(listener, device, touch_motion);
struct wlr_output *output =
get_mapped_output(device);
if (output) {
apply_output_transform(&event->x, &event->y, output->transform);
}
wl_signal_emit_mutable(&device->cursor->events.touch_motion, event);
}
static void handle_touch_cancel(struct wl_listener *listener, void *data) {
struct wlr_touch_cancel_event *event = data;
struct wlr_cursor_device *device;
device = wl_container_of(listener, device, touch_cancel);
wl_signal_emit_mutable(&device->cursor->events.touch_cancel, event);
}
static void handle_touch_frame(struct wl_listener *listener, void *data) {
struct wlr_cursor_device *device =
wl_container_of(listener, device, touch_frame);
wl_signal_emit_mutable(&device->cursor->events.touch_frame, NULL);
}
static void handle_tablet_tool_tip(struct wl_listener *listener, void *data) {
struct wlr_tablet_tool_tip_event *event = data;
struct wlr_cursor_device *device;
device = wl_container_of(listener, device, tablet_tool_tip);
struct wlr_output *output =
get_mapped_output(device);
if (output) {
apply_output_transform(&event->x, &event->y, output->transform);
}
wl_signal_emit_mutable(&device->cursor->events.tablet_tool_tip, event);
}
static void handle_tablet_tool_axis(struct wl_listener *listener, void *data) {
struct wlr_tablet_tool_axis_event *event = data;
struct wlr_cursor_device *device;
device = wl_container_of(listener, device, tablet_tool_axis);
struct wlr_output *output = get_mapped_output(device);
if (output) {
// In the case that only one axis received an event, rotating the input can
// cause the change to actually happen on the other axis, as far as clients
// are concerned.
//
// Here, we feed apply_output_transform NAN on the axis that didn't change,
// and remap the axes flags based on whether it returns NAN itself.
double x = event->updated_axes & WLR_TABLET_TOOL_AXIS_X ? event->x : NAN;
double y = event->updated_axes & WLR_TABLET_TOOL_AXIS_Y ? event->y : NAN;
apply_output_transform(&x, &y, output->transform);
event->updated_axes &= ~(WLR_TABLET_TOOL_AXIS_X | WLR_TABLET_TOOL_AXIS_Y);
event->x = event->y = 0;
if (!isnan(x)) {
event->updated_axes |= WLR_TABLET_TOOL_AXIS_X;
event->x = x;
}
if (!isnan(y)) {
event->updated_axes |= WLR_TABLET_TOOL_AXIS_Y;
event->y = y;
}
}
wl_signal_emit_mutable(&device->cursor->events.tablet_tool_axis, event);
}
static void handle_tablet_tool_button(struct wl_listener *listener,
void *data) {
struct wlr_tablet_tool_button *event = data;
struct wlr_cursor_device *device;
device = wl_container_of(listener, device, tablet_tool_button);
wl_signal_emit_mutable(&device->cursor->events.tablet_tool_button, event);
}
static void handle_tablet_tool_proximity(struct wl_listener *listener,
void *data) {
struct wlr_tablet_tool_proximity_event *event = data;
struct wlr_cursor_device *device;
device = wl_container_of(listener, device, tablet_tool_proximity);
struct wlr_output *output =
get_mapped_output(device);
if (output) {
apply_output_transform(&event->x, &event->y, output->transform);
}
wl_signal_emit_mutable(&device->cursor->events.tablet_tool_proximity, event);
}
static void handle_device_destroy(struct wl_listener *listener, void *data) {
struct wlr_cursor_device *c_device;
c_device = wl_container_of(listener, c_device, destroy);
wlr_cursor_detach_input_device(c_device->cursor, c_device->device);
}
static struct wlr_cursor_device *cursor_device_create(
struct wlr_cursor *cursor, struct wlr_input_device *device) {
struct wlr_cursor_device *c_device =
calloc(1, sizeof(struct wlr_cursor_device));
if (!c_device) {
wlr_log(WLR_ERROR, "Failed to allocate wlr_cursor_device");
return NULL;
}
c_device->cursor = cursor;
c_device->device = device;
// listen to events
wl_signal_add(&device->events.destroy, &c_device->destroy);
c_device->destroy.notify = handle_device_destroy;
if (device->type == WLR_INPUT_DEVICE_POINTER) {
struct wlr_pointer *pointer = wlr_pointer_from_input_device(device);
wl_signal_add(&pointer->events.motion, &c_device->motion);
c_device->motion.notify = handle_pointer_motion;
wl_signal_add(&pointer->events.motion_absolute,
&c_device->motion_absolute);
c_device->motion_absolute.notify = handle_pointer_motion_absolute;
wl_signal_add(&pointer->events.button, &c_device->button);
c_device->button.notify = handle_pointer_button;
wl_signal_add(&pointer->events.axis, &c_device->axis);
c_device->axis.notify = handle_pointer_axis;
wl_signal_add(&pointer->events.frame, &c_device->frame);
c_device->frame.notify = handle_pointer_frame;
wl_signal_add(&pointer->events.swipe_begin, &c_device->swipe_begin);
c_device->swipe_begin.notify = handle_pointer_swipe_begin;
wl_signal_add(&pointer->events.swipe_update, &c_device->swipe_update);
c_device->swipe_update.notify = handle_pointer_swipe_update;
wl_signal_add(&pointer->events.swipe_end, &c_device->swipe_end);
c_device->swipe_end.notify = handle_pointer_swipe_end;
wl_signal_add(&pointer->events.pinch_begin, &c_device->pinch_begin);
c_device->pinch_begin.notify = handle_pointer_pinch_begin;
wl_signal_add(&pointer->events.pinch_update, &c_device->pinch_update);
c_device->pinch_update.notify = handle_pointer_pinch_update;
wl_signal_add(&pointer->events.pinch_end, &c_device->pinch_end);
c_device->pinch_end.notify = handle_pointer_pinch_end;
wl_signal_add(&pointer->events.hold_begin, &c_device->hold_begin);
c_device->hold_begin.notify = handle_pointer_hold_begin;
wl_signal_add(&pointer->events.hold_end, &c_device->hold_end);
c_device->hold_end.notify = handle_pointer_hold_end;
} else if (device->type == WLR_INPUT_DEVICE_TOUCH) {
struct wlr_touch *touch = wlr_touch_from_input_device(device);
wl_signal_add(&touch->events.motion, &c_device->touch_motion);
c_device->touch_motion.notify = handle_touch_motion;
wl_signal_add(&touch->events.down, &c_device->touch_down);
c_device->touch_down.notify = handle_touch_down;
wl_signal_add(&touch->events.up, &c_device->touch_up);
c_device->touch_up.notify = handle_touch_up;
wl_signal_add(&touch->events.cancel, &c_device->touch_cancel);
c_device->touch_cancel.notify = handle_touch_cancel;
wl_signal_add(&touch->events.frame, &c_device->touch_frame);
c_device->touch_frame.notify = handle_touch_frame;
} else if (device->type == WLR_INPUT_DEVICE_TABLET_TOOL) {
struct wlr_tablet *tablet = wlr_tablet_from_input_device(device);
wl_signal_add(&tablet->events.tip, &c_device->tablet_tool_tip);
c_device->tablet_tool_tip.notify = handle_tablet_tool_tip;
wl_signal_add(&tablet->events.proximity,
&c_device->tablet_tool_proximity);
c_device->tablet_tool_proximity.notify = handle_tablet_tool_proximity;
wl_signal_add(&tablet->events.axis, &c_device->tablet_tool_axis);
c_device->tablet_tool_axis.notify = handle_tablet_tool_axis;
wl_signal_add(&tablet->events.button, &c_device->tablet_tool_button);
c_device->tablet_tool_button.notify = handle_tablet_tool_button;
}
wl_list_insert(&cursor->state->devices, &c_device->link);
return c_device;
}
void wlr_cursor_attach_input_device(struct wlr_cursor *cur,
struct wlr_input_device *dev) {
if (dev->type != WLR_INPUT_DEVICE_POINTER &&
dev->type != WLR_INPUT_DEVICE_TOUCH &&
dev->type != WLR_INPUT_DEVICE_TABLET_TOOL) {
wlr_log(WLR_ERROR, "only device types of pointer, touch or tablet tool"
"are supported");
return;
}
// make sure it is not already attached
struct wlr_cursor_device *_dev;
wl_list_for_each(_dev, &cur->state->devices, link) {
if (_dev->device == dev) {
return;
}
}
cursor_device_create(cur, dev);
}
void wlr_cursor_detach_input_device(struct wlr_cursor *cur,
struct wlr_input_device *dev) {
struct wlr_cursor_device *c_device, *tmp = NULL;
wl_list_for_each_safe(c_device, tmp, &cur->state->devices, link) {
if (c_device->device == dev) {
cursor_device_destroy(c_device);
}
}
}
static void handle_layout_destroy(struct wl_listener *listener, void *data) {
struct wlr_cursor_state *state =
wl_container_of(listener, state, layout_destroy);
cursor_detach_output_layout(state->cursor);
}
static void handle_layout_output_destroy(struct wl_listener *listener,
void *data) {
struct wlr_cursor_output_cursor *output_cursor =
wl_container_of(listener, output_cursor, layout_output_destroy);
//struct wlr_output_layout_output *l_output = data;
output_cursor_destroy(output_cursor);
}
static void layout_add(struct wlr_cursor_state *state,
struct wlr_output_layout_output *l_output) {
struct wlr_cursor_output_cursor *output_cursor;
wl_list_for_each(output_cursor, &state->output_cursors, link) {
if (output_cursor->output_cursor->output == l_output->output) {
return; // already added
}
}
output_cursor = calloc(1, sizeof(struct wlr_cursor_output_cursor));
if (output_cursor == NULL) {
wlr_log(WLR_ERROR, "Failed to allocate wlr_cursor_output_cursor");
return;
}
output_cursor->cursor = state->cursor;
output_cursor->output_cursor = wlr_output_cursor_create(l_output->output);
if (output_cursor->output_cursor == NULL) {
wlr_log(WLR_ERROR, "Failed to create wlr_output_cursor");
free(output_cursor);
return;
}
output_cursor->layout_output_destroy.notify = handle_layout_output_destroy;
wl_signal_add(&l_output->events.destroy,
&output_cursor->layout_output_destroy);
wl_list_insert(&state->output_cursors, &output_cursor->link);
}
static void handle_layout_add(struct wl_listener *listener, void *data) {
struct wlr_cursor_state *state =
wl_container_of(listener, state, layout_add);
struct wlr_output_layout_output *l_output = data;
layout_add(state, l_output);
}
static void handle_layout_change(struct wl_listener *listener, void *data) {
struct wlr_cursor_state *state =
wl_container_of(listener, state, layout_change);
struct wlr_output_layout *layout = data;
if (!wlr_output_layout_contains_point(layout, NULL, state->cursor->x,
state->cursor->y) && !wl_list_empty(&layout->outputs)) {
// the output we were on has gone away so go to the closest boundary
// point (unless the layout is empty; compare warp_closest())
double x, y;
wlr_output_layout_closest_point(layout, NULL, state->cursor->x,
state->cursor->y, &x, &y);
cursor_warp_unchecked(state->cursor, x, y);
}
}
void wlr_cursor_attach_output_layout(struct wlr_cursor *cur,
struct wlr_output_layout *l) {
cursor_detach_output_layout(cur);
if (l == NULL) {
return;
}
wl_signal_add(&l->events.add, &cur->state->layout_add);
cur->state->layout_add.notify = handle_layout_add;
wl_signal_add(&l->events.change, &cur->state->layout_change);
cur->state->layout_change.notify = handle_layout_change;
wl_signal_add(&l->events.destroy, &cur->state->layout_destroy);
cur->state->layout_destroy.notify = handle_layout_destroy;
cur->state->layout = l;
struct wlr_output_layout_output *l_output;
wl_list_for_each(l_output, &l->outputs, link) {
layout_add(cur->state, l_output);
}
}
void wlr_cursor_map_to_output(struct wlr_cursor *cur,
struct wlr_output *output) {
cur->state->mapped_output = output;
}
void wlr_cursor_map_input_to_output(struct wlr_cursor *cur,
struct wlr_input_device *dev, struct wlr_output *output) {
struct wlr_cursor_device *c_device = get_cursor_device(cur, dev);
if (!c_device) {
wlr_log(WLR_ERROR, "Cannot map device \"%s\" to output"
" (not found in this cursor)", dev->name);
return;
}
c_device->mapped_output = output;
}
void wlr_cursor_map_to_region(struct wlr_cursor *cur,
const struct wlr_box *box) {
memset(&cur->state->mapped_box, 0, sizeof(cur->state->mapped_box));
if (box) {
if (wlr_box_empty(box)) {
wlr_log(WLR_ERROR, "cannot map cursor to an empty region");
return;
}
cur->state->mapped_box = *box;
}
}
void wlr_cursor_map_input_to_region(struct wlr_cursor *cur,
struct wlr_input_device *dev, const struct wlr_box *box) {
memset(&cur->state->mapped_box, 0, sizeof(cur->state->mapped_box));
struct wlr_cursor_device *c_device = get_cursor_device(cur, dev);
if (!c_device) {
wlr_log(WLR_ERROR, "Cannot map device \"%s\" to geometry (not found in"
"this cursor)", dev->name);
return;
}
if (box) {
if (wlr_box_empty(box)) {
wlr_log(WLR_ERROR,
"cannot map device \"%s\" input to an empty region",
dev->name);
return;
}
c_device->mapped_box = *box;
}
}