sway/swaynag/nagbar.c
Drew DeVault 37709917b1 Set output to NULL if not specified
This opens nagbar on the active output.
2018-08-01 22:47:54 -04:00

413 lines
13 KiB
C

#define _XOPEN_SOURCE 500
#include <assert.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <wayland-client.h>
#include <wayland-cursor.h>
#include "log.h"
#include "list.h"
#include "swaynag/nagbar.h"
#include "swaynag/render.h"
#include "swaynag/types.h"
#include "wlr-layer-shell-unstable-v1-client-protocol.h"
static void nop() {
// Intentionally left blank
}
static bool terminal_execute(char *terminal, char *command) {
char fname[] = "/tmp/swaynagXXXXXX";
FILE *tmp= fdopen(mkstemp(fname), "w");
if (!tmp) {
wlr_log(WLR_ERROR, "Failed to create temp script");
return false;
}
wlr_log(WLR_DEBUG, "Created temp script: %s", fname);
fprintf(tmp, "#!/bin/sh\nrm %s\n%s", fname, command);
fclose(tmp);
chmod(fname, S_IRUSR | S_IWUSR | S_IXUSR);
char cmd[strlen(terminal) + strlen(" -e ") + strlen(fname) + 1];
sprintf(cmd, "%s -e %s", terminal, fname);
execl("/bin/sh", "/bin/sh", "-c", cmd, NULL);
return true;
}
static void nagbar_button_execute(struct sway_nagbar *nagbar,
struct sway_nagbar_button *button) {
wlr_log(WLR_DEBUG, "Executing [%s]: %s", button->text, button->action);
if (button->type == NAGBAR_ACTION_DISMISS) {
nagbar->run_display = false;
} else if (button->type == NAGBAR_ACTION_EXPAND) {
nagbar->details.visible = !nagbar->details.visible;
render_frame(nagbar);
} else {
if (fork() == 0) {
// Child process. Will be used to prevent zombie processes
setsid();
if (fork() == 0) {
// Child of the child. Will be reparented to the init process
char *terminal = getenv("TERMINAL");
if (terminal && strlen(terminal)) {
wlr_log(WLR_DEBUG, "Found $TERMINAL: %s", terminal);
if (!terminal_execute(terminal, button->action)) {
nagbar_destroy(nagbar);
exit(EXIT_FAILURE);
}
} else {
wlr_log(WLR_DEBUG, "$TERMINAL not found. Running directly");
execl("/bin/sh", "/bin/sh", "-c", button->action, NULL);
}
}
exit(EXIT_SUCCESS);
}
}
wait(0);
}
static void layer_surface_configure(void *data,
struct zwlr_layer_surface_v1 *surface,
uint32_t serial, uint32_t width, uint32_t height) {
struct sway_nagbar *nagbar = data;
nagbar->width = width;
nagbar->height = height;
zwlr_layer_surface_v1_ack_configure(surface, serial);
render_frame(nagbar);
}
static void layer_surface_closed(void *data,
struct zwlr_layer_surface_v1 *surface) {
struct sway_nagbar *nagbar = data;
nagbar_destroy(nagbar);
}
static struct zwlr_layer_surface_v1_listener layer_surface_listener = {
.configure = layer_surface_configure,
.closed = layer_surface_closed,
};
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 sway_nagbar *nagbar = data;
struct sway_nagbar_pointer *pointer = &nagbar->pointer;
wl_surface_set_buffer_scale(pointer->cursor_surface, nagbar->scale);
wl_surface_attach(pointer->cursor_surface,
wl_cursor_image_get_buffer(pointer->cursor_image), 0, 0);
wl_pointer_set_cursor(wl_pointer, serial, pointer->cursor_surface,
pointer->cursor_image->hotspot_x / nagbar->scale,
pointer->cursor_image->hotspot_y / nagbar->scale);
wl_surface_commit(pointer->cursor_surface);
}
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 sway_nagbar *nagbar = data;
nagbar->pointer.x = wl_fixed_to_int(surface_x);
nagbar->pointer.y = wl_fixed_to_int(surface_y);
}
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 sway_nagbar *nagbar = data;
if (state != WL_POINTER_BUTTON_STATE_PRESSED) {
return;
}
double x = nagbar->pointer.x * nagbar->scale;
double y = nagbar->pointer.y * nagbar->scale;
for (int i = 0; i < nagbar->buttons->length; i++) {
struct sway_nagbar_button *nagbutton = nagbar->buttons->items[i];
if (x >= nagbutton->x
&& y >= nagbutton->y
&& x < nagbutton->x + nagbutton->width
&& y < nagbutton->y + nagbutton->height) {
nagbar_button_execute(nagbar, nagbutton);
return;
}
}
if (nagbar->details.visible &&
nagbar->details.total_lines != nagbar->details.visible_lines) {
struct sway_nagbar_button button_up = nagbar->details.button_up;
if (x >= button_up.x
&& y >= button_up.y
&& x < button_up.x + button_up.width
&& y < button_up.y + button_up.height
&& nagbar->details.offset > 0) {
nagbar->details.offset--;
render_frame(nagbar);
return;
}
struct sway_nagbar_button button_down = nagbar->details.button_down;
int bot = nagbar->details.total_lines - nagbar->details.visible_lines;
if (x >= button_down.x
&& y >= button_down.y
&& x < button_down.x + button_down.width
&& y < button_down.y + button_down.height
&& nagbar->details.offset < bot) {
nagbar->details.offset++;
render_frame(nagbar);
return;
}
}
}
static void wl_pointer_axis(void *data, struct wl_pointer *wl_pointer,
uint32_t time, uint32_t axis, wl_fixed_t value) {
struct sway_nagbar *nagbar = data;
if (!nagbar->details.visible
|| nagbar->pointer.x < nagbar->details.x
|| nagbar->pointer.y < nagbar->details.y
|| nagbar->pointer.x >= nagbar->details.x + nagbar->details.width
|| nagbar->pointer.y >= nagbar->details.y + nagbar->details.height
|| nagbar->details.total_lines == nagbar->details.visible_lines) {
return;
}
int direction = wl_fixed_to_int(value);
int bot = nagbar->details.total_lines - nagbar->details.visible_lines;
if (direction < 0 && nagbar->details.offset > 0) {
nagbar->details.offset--;
} else if (direction > 0 && nagbar->details.offset < bot) {
nagbar->details.offset++;
}
render_frame(nagbar);
}
static struct wl_pointer_listener pointer_listener = {
.enter = wl_pointer_enter,
.leave = nop,
.motion = wl_pointer_motion,
.button = wl_pointer_button,
.axis = wl_pointer_axis,
.frame = nop,
.axis_source = nop,
.axis_stop = nop,
.axis_discrete = nop,
};
static void seat_handle_capabilities(void *data, struct wl_seat *wl_seat,
enum wl_seat_capability caps) {
struct sway_nagbar *nagbar = data;
if ((caps & WL_SEAT_CAPABILITY_POINTER)) {
nagbar->pointer.pointer = wl_seat_get_pointer(wl_seat);
wl_pointer_add_listener(nagbar->pointer.pointer, &pointer_listener,
nagbar);
}
}
const struct wl_seat_listener seat_listener = {
.capabilities = seat_handle_capabilities,
.name = nop,
};
static void output_scale(void *data, struct wl_output *output,
int32_t factor) {
struct sway_nagbar *nagbar = data;
nagbar->scale = factor;
render_frame(nagbar);
}
static struct wl_output_listener output_listener = {
.geometry = nop,
.mode = nop,
.done = nop,
.scale = output_scale,
};
struct output_state {
struct wl_output *wl_output;
uint32_t wl_name;
struct zxdg_output_v1 *xdg_output;
struct sway_nagbar *nagbar;
};
static void xdg_output_handle_name(void *data,
struct zxdg_output_v1 *xdg_output, const char *name) {
struct output_state *state = data;
char *outname = state->nagbar->output.name;
wlr_log(WLR_DEBUG, "Checking against output %s for %s", name, outname);
if (outname && !state->nagbar->output.wl_output) {
wlr_log(WLR_DEBUG, "Using output %s", name);
state->nagbar->output.wl_output = state->wl_output;
state->nagbar->output.wl_name = state->wl_name;
wl_output_add_listener(state->nagbar->output.wl_output,
&output_listener, state->nagbar);
wl_display_roundtrip(state->nagbar->display);
zxdg_output_v1_destroy(state->xdg_output);
} else {
zxdg_output_v1_destroy(state->xdg_output);
wl_output_destroy(state->wl_output);
}
state->nagbar->querying_outputs--;
free(state);
}
static struct zxdg_output_v1_listener xdg_output_listener = {
.logical_position = nop,
.logical_size = nop,
.done = nop,
.name = xdg_output_handle_name,
.description = nop,
};
static void handle_global(void *data, struct wl_registry *registry,
uint32_t name, const char *interface, uint32_t version) {
struct sway_nagbar *nagbar = data;
if (strcmp(interface, wl_compositor_interface.name) == 0) {
nagbar->compositor = wl_registry_bind(registry, name,
&wl_compositor_interface, 3);
} else if (strcmp(interface, wl_seat_interface.name) == 0) {
nagbar->seat = wl_registry_bind(registry, name, &wl_seat_interface, 1);
wl_seat_add_listener(nagbar->seat, &seat_listener, nagbar);
} else if (strcmp(interface, wl_shm_interface.name) == 0) {
nagbar->shm = wl_registry_bind(registry, name, &wl_shm_interface, 1);
} else if (strcmp(interface, wl_output_interface.name) == 0) {
if (!nagbar->output.wl_output && nagbar->xdg_output_manager) {
nagbar->querying_outputs++;
struct output_state *state =
calloc(1, sizeof(struct output_state));
state->nagbar = nagbar;
state->wl_output = wl_registry_bind(registry, name,
&wl_output_interface, 3);
state->wl_name = name;
state->xdg_output = zxdg_output_manager_v1_get_xdg_output(
nagbar->xdg_output_manager, state->wl_output);
zxdg_output_v1_add_listener(state->xdg_output,
&xdg_output_listener, state);
}
} else if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) {
nagbar->layer_shell = wl_registry_bind(
registry, name, &zwlr_layer_shell_v1_interface, 1);
} else if (strcmp(interface, zxdg_output_manager_v1_interface.name) == 0
&& version >= ZXDG_OUTPUT_V1_NAME_SINCE_VERSION) {
nagbar->xdg_output_manager = wl_registry_bind(registry, name,
&zxdg_output_manager_v1_interface,
ZXDG_OUTPUT_V1_NAME_SINCE_VERSION);
}
}
static void handle_global_remove(void *data, struct wl_registry *registry,
uint32_t name) {
struct sway_nagbar *nagbar = data;
if (nagbar->output.wl_name == name) {
nagbar->run_display = false;
}
}
static const struct wl_registry_listener registry_listener = {
.global = handle_global,
.global_remove = handle_global_remove,
};
void nagbar_setup(struct sway_nagbar *nagbar) {
nagbar->display = wl_display_connect(NULL);
assert(nagbar->display);
nagbar->scale = 1;
struct wl_registry *registry = wl_display_get_registry(nagbar->display);
wl_registry_add_listener(registry, &registry_listener, nagbar);
wl_display_roundtrip(nagbar->display);
assert(nagbar->compositor && nagbar->layer_shell && nagbar->shm);
while (nagbar->querying_outputs > 0) {
wl_display_roundtrip(nagbar->display);
}
if (!nagbar->output.wl_output && nagbar->output.name) {
wlr_log(WLR_ERROR, "Output '%s' not found", nagbar->output.name);
nagbar_destroy(nagbar);
exit(EXIT_FAILURE);
}
struct sway_nagbar_pointer *pointer = &nagbar->pointer;
int scale = nagbar->scale < 1 ? 1 : nagbar->scale;
pointer->cursor_theme = wl_cursor_theme_load(
NULL, 24 * scale, nagbar->shm);
assert(pointer->cursor_theme);
struct wl_cursor *cursor =
wl_cursor_theme_get_cursor(pointer->cursor_theme, "left_ptr");
assert(cursor);
pointer->cursor_image = cursor->images[0];
pointer->cursor_surface = wl_compositor_create_surface(nagbar->compositor);
assert(pointer->cursor_surface);
nagbar->surface = wl_compositor_create_surface(nagbar->compositor);
assert(nagbar->surface);
nagbar->layer_surface = zwlr_layer_shell_v1_get_layer_surface(
nagbar->layer_shell, nagbar->surface, nagbar->output.wl_output,
ZWLR_LAYER_SHELL_V1_LAYER_TOP, "swaynag");
assert(nagbar->layer_surface);
zwlr_layer_surface_v1_add_listener(nagbar->layer_surface,
&layer_surface_listener, nagbar);
zwlr_layer_surface_v1_set_anchor(nagbar->layer_surface, nagbar->anchors);
wl_registry_destroy(registry);
}
void nagbar_run(struct sway_nagbar *nagbar) {
nagbar->run_display = true;
render_frame(nagbar);
while (nagbar->run_display && wl_display_dispatch(nagbar->display) != -1) {
// This is intentionally left blank
}
}
void nagbar_destroy(struct sway_nagbar *nagbar) {
nagbar->run_display = false;
free(nagbar->message);
free(nagbar->font);
while (nagbar->buttons->length) {
struct sway_nagbar_button *button = nagbar->buttons->items[0];
list_del(nagbar->buttons, 0);
free(button->text);
free(button->action);
free(button);
}
list_free(nagbar->buttons);
free(nagbar->details.message);
free(nagbar->details.button_up.text);
free(nagbar->details.button_down.text);
if (nagbar->type) {
nagbar_type_free(nagbar->type);
}
if (nagbar->layer_surface) {
zwlr_layer_surface_v1_destroy(nagbar->layer_surface);
}
if (nagbar->surface) {
wl_surface_destroy(nagbar->surface);
}
if (nagbar->output.wl_output) {
wl_output_destroy(nagbar->output.wl_output);
}
if (&nagbar->buffers[0]) {
destroy_buffer(&nagbar->buffers[0]);
}
if (&nagbar->buffers[1]) {
destroy_buffer(&nagbar->buffers[1]);
}
if (nagbar->compositor) {
wl_compositor_destroy(nagbar->compositor);
}
if (nagbar->shm) {
wl_shm_destroy(nagbar->shm);
}
if (nagbar->display) {
wl_display_disconnect(nagbar->display);
}
}