swayfx/swaybar/input.c
Hristo Venev 7affe5c1bd swaybar: fix i3bar relative coordinates when scaling is used
24e8ba048a did not take scaling into account.
The hotspot size used pixel coordinates, the absolute coordinates were logical,
and the relative coordinates were completely wrong.

This commit makes all coordinates use logical values. If
`"float_event_coords":true` is sent in the handshake message, coordinates are
sent as floating-point values.

The "scale" field is an integer containing the scale value.
2020-02-10 18:58:09 +01:00

451 lines
13 KiB
C

#include <assert.h>
#include <linux/input-event-codes.h>
#include <stdlib.h>
#include <wayland-client.h>
#include <wayland-cursor.h>
#include "list.h"
#include "log.h"
#include "swaybar/bar.h"
#include "swaybar/config.h"
#include "swaybar/input.h"
#include "swaybar/ipc.h"
void free_hotspots(struct wl_list *list) {
struct swaybar_hotspot *hotspot, *tmp;
wl_list_for_each_safe(hotspot, tmp, list, link) {
wl_list_remove(&hotspot->link);
if (hotspot->destroy) {
hotspot->destroy(hotspot->data);
}
free(hotspot);
}
}
uint32_t event_to_x11_button(uint32_t event) {
switch (event) {
case BTN_LEFT:
return 1;
case BTN_MIDDLE:
return 2;
case BTN_RIGHT:
return 3;
case SWAY_SCROLL_UP:
return 4;
case SWAY_SCROLL_DOWN:
return 5;
case SWAY_SCROLL_LEFT:
return 6;
case SWAY_SCROLL_RIGHT:
return 7;
case BTN_SIDE:
return 8;
case BTN_EXTRA:
return 9;
default:
return 0;
}
}
static uint32_t wl_axis_to_button(uint32_t axis, wl_fixed_t value) {
bool negative = wl_fixed_to_double(value) < 0;
switch (axis) {
case WL_POINTER_AXIS_VERTICAL_SCROLL:
return negative ? SWAY_SCROLL_UP : SWAY_SCROLL_DOWN;
case WL_POINTER_AXIS_HORIZONTAL_SCROLL:
return negative ? SWAY_SCROLL_LEFT : SWAY_SCROLL_RIGHT;
default:
sway_log(SWAY_DEBUG, "Unexpected axis value on mouse scroll");
return 0;
}
}
void update_cursor(struct swaybar_seat *seat) {
struct swaybar_pointer *pointer = &seat->pointer;
if (!pointer || !pointer->cursor_surface) {
return;
}
if (pointer->cursor_theme) {
wl_cursor_theme_destroy(pointer->cursor_theme);
}
const char *cursor_theme = getenv("XCURSOR_THEME");
unsigned cursor_size = 24;
const char *env_cursor_size = getenv("XCURSOR_SIZE");
if (env_cursor_size && strlen(env_cursor_size) > 0) {
errno = 0;
char *end;
unsigned size = strtoul(env_cursor_size, &end, 10);
if (!*end && errno == 0) {
cursor_size = size;
}
}
int scale = pointer->current ? pointer->current->scale : 1;
pointer->cursor_theme = wl_cursor_theme_load(
cursor_theme, cursor_size * scale, seat->bar->shm);
struct wl_cursor *cursor;
cursor = wl_cursor_theme_get_cursor(pointer->cursor_theme, "left_ptr");
pointer->cursor_image = cursor->images[0];
wl_surface_set_buffer_scale(pointer->cursor_surface, scale);
wl_surface_attach(pointer->cursor_surface,
wl_cursor_image_get_buffer(pointer->cursor_image), 0, 0);
wl_pointer_set_cursor(pointer->pointer, pointer->serial,
pointer->cursor_surface,
pointer->cursor_image->hotspot_x / scale,
pointer->cursor_image->hotspot_y / scale);
wl_surface_damage_buffer(pointer->cursor_surface, 0, 0,
INT32_MAX, INT32_MAX);
wl_surface_commit(pointer->cursor_surface);
}
static void wl_pointer_enter(void *data, struct wl_pointer *wl_pointer,
uint32_t serial, struct wl_surface *surface,
wl_fixed_t surface_x, wl_fixed_t surface_y) {
struct swaybar_seat *seat = data;
struct swaybar_pointer *pointer = &seat->pointer;
pointer->serial = serial;
struct swaybar_output *output;
wl_list_for_each(output, &seat->bar->outputs, link) {
if (output->surface == surface) {
pointer->current = output;
break;
}
}
update_cursor(seat);
}
static void wl_pointer_leave(void *data, struct wl_pointer *wl_pointer,
uint32_t serial, struct wl_surface *surface) {
struct swaybar_seat *seat = data;
seat->pointer.current = NULL;
}
static void wl_pointer_motion(void *data, struct wl_pointer *wl_pointer,
uint32_t time, wl_fixed_t surface_x, wl_fixed_t surface_y) {
struct swaybar_seat *seat = data;
seat->pointer.x = wl_fixed_to_double(surface_x);
seat->pointer.y = wl_fixed_to_double(surface_y);
}
static bool check_bindings(struct swaybar *bar, uint32_t button,
uint32_t state) {
bool released = state == WL_POINTER_BUTTON_STATE_RELEASED;
for (int i = 0; i < bar->config->bindings->length; i++) {
struct swaybar_binding *binding = bar->config->bindings->items[i];
if (binding->button == button && binding->release == released) {
ipc_execute_binding(bar, binding);
return true;
}
}
return false;
}
static bool process_hotspots(struct swaybar_output *output,
double x, double y, uint32_t button) {
double px = x * output->scale;
double py = y * output->scale;
struct swaybar_hotspot *hotspot;
wl_list_for_each(hotspot, &output->hotspots, link) {
if (px >= hotspot->x && py >= hotspot->y
&& px < hotspot->x + hotspot->width
&& py < hotspot->y + hotspot->height) {
if (HOTSPOT_IGNORE == hotspot->callback(output, hotspot, x, y,
button, hotspot->data)) {
return true;
}
}
}
return false;
}
static void wl_pointer_button(void *data, struct wl_pointer *wl_pointer,
uint32_t serial, uint32_t time, uint32_t button, uint32_t state) {
struct swaybar_seat *seat = data;
struct swaybar_pointer *pointer = &seat->pointer;
struct swaybar_output *output = pointer->current;
if (!sway_assert(output, "button with no active output")) {
return;
}
if (check_bindings(seat->bar, button, state)) {
return;
}
if (state != WL_POINTER_BUTTON_STATE_PRESSED) {
return;
}
process_hotspots(output, pointer->x, pointer->y, button);
}
static void workspace_next(struct swaybar *bar, struct swaybar_output *output,
bool left) {
struct swaybar_config *config = bar->config;
struct swaybar_workspace *first =
wl_container_of(output->workspaces.next, first, link);
struct swaybar_workspace *last =
wl_container_of(output->workspaces.prev, last, link);
struct swaybar_workspace *active;
wl_list_for_each(active, &output->workspaces, link) {
if (active->visible) {
break;
}
}
if (!sway_assert(active->visible, "axis with null workspace")) {
return;
}
struct swaybar_workspace *new;
if (left) {
if (active == first) {
new = config->wrap_scroll ? last : NULL;
} else {
new = wl_container_of(active->link.prev, new, link);
}
} else {
if (active == last) {
new = config->wrap_scroll ? first : NULL;
} else {
new = wl_container_of(active->link.next, new, link);
}
}
if (new) {
ipc_send_workspace_command(bar, new->name);
}
}
static void wl_pointer_axis(void *data, struct wl_pointer *wl_pointer,
uint32_t time, uint32_t axis, wl_fixed_t value) {
struct swaybar_seat *seat = data;
struct swaybar_pointer *pointer = &seat->pointer;
struct swaybar_output *output = pointer->current;
if (!sway_assert(output, "axis with no active output")) {
return;
}
// If there is a button press binding, execute it, skip default behavior,
// and check button release bindings
uint32_t button = wl_axis_to_button(axis, value);
if (check_bindings(seat->bar, button, WL_POINTER_BUTTON_STATE_PRESSED)) {
check_bindings(seat->bar, button, WL_POINTER_BUTTON_STATE_RELEASED);
return;
}
if (process_hotspots(output, pointer->x, pointer->y, button)) {
return;
}
struct swaybar_config *config = seat->bar->config;
double amt = wl_fixed_to_double(value);
if (amt == 0.0 || !config->workspace_buttons) {
check_bindings(seat->bar, button, WL_POINTER_BUTTON_STATE_RELEASED);
return;
}
if (!sway_assert(!wl_list_empty(&output->workspaces), "axis with no workspaces")) {
return;
}
workspace_next(seat->bar, output, amt < 0.0);
// Check button release bindings
check_bindings(seat->bar, button, WL_POINTER_BUTTON_STATE_RELEASED);
}
static void wl_pointer_frame(void *data, struct wl_pointer *wl_pointer) {
// Who cares
}
static void wl_pointer_axis_source(void *data, struct wl_pointer *wl_pointer,
uint32_t axis_source) {
// Who cares
}
static void wl_pointer_axis_stop(void *data, struct wl_pointer *wl_pointer,
uint32_t time, uint32_t axis) {
// Who cares
}
static void wl_pointer_axis_discrete(void *data, struct wl_pointer *wl_pointer,
uint32_t axis, int32_t discrete) {
// Who cares
}
static struct wl_pointer_listener pointer_listener = {
.enter = wl_pointer_enter,
.leave = wl_pointer_leave,
.motion = wl_pointer_motion,
.button = wl_pointer_button,
.axis = wl_pointer_axis,
.frame = wl_pointer_frame,
.axis_source = wl_pointer_axis_source,
.axis_stop = wl_pointer_axis_stop,
.axis_discrete = wl_pointer_axis_discrete,
};
static struct touch_slot *get_touch_slot(struct swaybar_touch *touch, int32_t id) {
ssize_t next = -1;
for (size_t i = 0; i < sizeof(touch->slots) / sizeof(*touch->slots); ++i) {
if (touch->slots[i].id == id) {
return &touch->slots[i];
}
if (next == -1 && !touch->slots[i].output) {
next = i;
}
}
if (next == -1) {
sway_log(SWAY_ERROR, "Ran out of touch slots");
return NULL;
}
return &touch->slots[next];
}
static void wl_touch_down(void *data, struct wl_touch *wl_touch,
uint32_t serial, uint32_t time, struct wl_surface *surface,
int32_t id, wl_fixed_t _x, wl_fixed_t _y) {
struct swaybar_seat *seat = data;
struct swaybar_output *_output = NULL, *output = NULL;
wl_list_for_each(_output, &seat->bar->outputs, link) {
if (_output->surface == surface) {
output = _output;
break;
}
}
if (!output) {
sway_log(SWAY_DEBUG, "Got touch event for unknown surface");
return;
}
struct touch_slot *slot = get_touch_slot(&seat->touch, id);
if (!slot) {
return;
}
slot->id = id;
slot->output = output;
slot->x = slot->start_x = wl_fixed_to_double(_x);
slot->y = slot->start_y = wl_fixed_to_double(_y);
slot->time = time;
}
static void wl_touch_up(void *data, struct wl_touch *wl_touch,
uint32_t serial, uint32_t time, int32_t id) {
struct swaybar_seat *seat = data;
struct touch_slot *slot = get_touch_slot(&seat->touch, id);
if (!slot) {
return;
}
if (time - slot->time < 500) {
// Tap, treat it like a pointer click
process_hotspots(slot->output, slot->x, slot->y, BTN_LEFT);
}
slot->output = NULL;
}
static void wl_touch_motion(void *data, struct wl_touch *wl_touch,
uint32_t time, int32_t id, wl_fixed_t x, wl_fixed_t y) {
struct swaybar_seat *seat = data;
struct touch_slot *slot = get_touch_slot(&seat->touch, id);
if (!slot) {
return;
}
int prev_progress = (int)((slot->x - slot->start_x)
/ slot->output->width * 100);
slot->x = wl_fixed_to_double(x);
slot->y = wl_fixed_to_double(y);
// "progress" is a measure from 0..100 representing the fraction of the
// output the touch gesture has travelled, positive when moving to the right
// and negative when moving to the left.
int progress = (int)((slot->x - slot->start_x)
/ slot->output->width * 100);
if (abs(progress) / 20 != abs(prev_progress) / 20) {
workspace_next(seat->bar, slot->output, progress - prev_progress < 0);
}
}
static void wl_touch_frame(void *data, struct wl_touch *wl_touch) {
// Who cares
}
static void wl_touch_cancel(void *data, struct wl_touch *wl_touch) {
struct swaybar_seat *seat = data;
struct swaybar_touch *touch = &seat->touch;
for (size_t i = 0; i < sizeof(touch->slots) / sizeof(*touch->slots); ++i) {
touch->slots[i].output = NULL;
}
}
static void wl_touch_shape(void *data, struct wl_touch *wl_touch, int32_t id,
wl_fixed_t major, wl_fixed_t minor) {
// Who cares
}
static void wl_touch_orientation(void *data, struct wl_touch *wl_touch,
int32_t id, wl_fixed_t orientation) {
// Who cares
}
static const struct wl_touch_listener touch_listener = {
.down = wl_touch_down,
.up = wl_touch_up,
.motion = wl_touch_motion,
.frame = wl_touch_frame,
.cancel = wl_touch_cancel,
.shape = wl_touch_shape,
.orientation = wl_touch_orientation,
};
static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
enum wl_seat_capability caps) {
struct swaybar_seat *seat = data;
bool have_pointer = caps & WL_SEAT_CAPABILITY_POINTER;
bool have_touch = caps & WL_SEAT_CAPABILITY_TOUCH;
if (!have_pointer && seat->pointer.pointer != NULL) {
wl_pointer_release(seat->pointer.pointer);
seat->pointer.pointer = NULL;
} else if (have_pointer && seat->pointer.pointer == NULL) {
seat->pointer.pointer = wl_seat_get_pointer(wl_seat);
if (seat->bar->running && !seat->pointer.cursor_surface) {
seat->pointer.cursor_surface =
wl_compositor_create_surface(seat->bar->compositor);
assert(seat->pointer.cursor_surface);
}
wl_pointer_add_listener(seat->pointer.pointer, &pointer_listener, seat);
}
if (!have_touch && seat->touch.touch != NULL) {
wl_touch_release(seat->touch.touch);
seat->touch.touch = NULL;
} else if (have_touch && seat->touch.touch == NULL) {
seat->touch.touch = wl_seat_get_touch(wl_seat);
wl_touch_add_listener(seat->touch.touch, &touch_listener, seat);
}
}
static void seat_handle_name(void *data, struct wl_seat *wl_seat,
const char *name) {
// Who cares
}
const struct wl_seat_listener seat_listener = {
.capabilities = seat_handle_capabilities,
.name = seat_handle_name,
};
void swaybar_seat_free(struct swaybar_seat *seat) {
if (!seat) {
return;
}
if (seat->pointer.pointer != NULL) {
wl_pointer_release(seat->pointer.pointer);
}
if (seat->pointer.cursor_surface != NULL) {
wl_surface_destroy(seat->pointer.cursor_surface);
}
if (seat->touch.touch != NULL) {
wl_touch_release(seat->touch.touch);
}
wl_seat_destroy(seat->wl_seat);
wl_list_remove(&seat->link);
free(seat);
}