/* * Copyright © 2010-2011 Intel Corporation * Copyright © 2008-2011 Kristian Høgsberg * Copyright © 2012 Collabora, Ltd. * * Permission to use, copy, modify, distribute, and sell this software and * its documentation for any purpose is hereby granted without fee, provided * that the above copyright notice appear in all copies and that both that * copyright notice and this permission notice appear in supporting * documentation, and that the name of the copyright holders not be used in * advertising or publicity pertaining to distribution of the software * without specific, written prior permission. The copyright holders make * no representations about the suitability of this software for any * purpose. It is provided "as is" without express or implied warranty. * * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #define _GNU_SOURCE #include "config.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_LIBUNWIND #define UNW_LOCAL_ONLY #include #endif #include #include "compositor.h" #include "subsurface-server-protocol.h" #include "../shared/os-compatibility.h" #include "git-version.h" #include "version.h" static struct wl_list child_process_list; static struct weston_compositor *segv_compositor; static int sigchld_handler(int signal_number, void *data) { struct weston_process *p; int status; pid_t pid; pid = waitpid(-1, &status, WNOHANG); if (!pid) return 1; wl_list_for_each(p, &child_process_list, link) { if (p->pid == pid) break; } if (&p->link == &child_process_list) { weston_log("unknown child process exited\n"); return 1; } wl_list_remove(&p->link); p->cleanup(p, status); return 1; } static void weston_output_transform_init(struct weston_output *output, uint32_t transform); WL_EXPORT int weston_output_switch_mode(struct weston_output *output, struct weston_mode *mode) { struct weston_seat *seat; pixman_region32_t old_output_region; int ret; if (!output->switch_mode) return -1; ret = output->switch_mode(output, mode); if (ret < 0) return ret; pixman_region32_init(&old_output_region); pixman_region32_copy(&old_output_region, &output->region); /* Update output region and transformation matrix */ weston_output_transform_init(output, output->transform); pixman_region32_init(&output->previous_damage); pixman_region32_init_rect(&output->region, output->x, output->y, output->width, output->height); weston_output_update_matrix(output); /* If a pointer falls outside the outputs new geometry, move it to its * lower-right corner */ wl_list_for_each(seat, &output->compositor->seat_list, link) { struct weston_pointer *pointer = seat->pointer; int32_t x, y; if (!pointer) continue; x = wl_fixed_to_int(pointer->x); y = wl_fixed_to_int(pointer->y); if (!pixman_region32_contains_point(&old_output_region, x, y, NULL) || pixman_region32_contains_point(&output->region, x, y, NULL)) continue; if (x >= output->x + output->width) x = output->x + output->width - 1; if (y >= output->y + output->height) y = output->y + output->height - 1; pointer->x = wl_fixed_from_int(x); pointer->y = wl_fixed_from_int(y); } pixman_region32_fini(&old_output_region); return ret; } WL_EXPORT void weston_watch_process(struct weston_process *process) { wl_list_insert(&child_process_list, &process->link); } static void child_client_exec(int sockfd, const char *path) { int clientfd; char s[32]; sigset_t allsigs; /* do not give our signal mask to the new process */ sigfillset(&allsigs); sigprocmask(SIG_UNBLOCK, &allsigs, NULL); /* Launch clients as the user. */ seteuid(getuid()); /* SOCK_CLOEXEC closes both ends, so we dup the fd to get a * non-CLOEXEC fd to pass through exec. */ clientfd = dup(sockfd); if (clientfd == -1) { weston_log("compositor: dup failed: %m\n"); return; } snprintf(s, sizeof s, "%d", clientfd); setenv("WAYLAND_SOCKET", s, 1); if (execl(path, path, NULL) < 0) weston_log("compositor: executing '%s' failed: %m\n", path); } WL_EXPORT struct wl_client * weston_client_launch(struct weston_compositor *compositor, struct weston_process *proc, const char *path, weston_process_cleanup_func_t cleanup) { int sv[2]; pid_t pid; struct wl_client *client; weston_log("launching '%s'\n", path); if (os_socketpair_cloexec(AF_UNIX, SOCK_STREAM, 0, sv) < 0) { weston_log("weston_client_launch: " "socketpair failed while launching '%s': %m\n", path); return NULL; } pid = fork(); if (pid == -1) { close(sv[0]); close(sv[1]); weston_log("weston_client_launch: " "fork failed while launching '%s': %m\n", path); return NULL; } if (pid == 0) { child_client_exec(sv[1], path); exit(-1); } close(sv[1]); client = wl_client_create(compositor->wl_display, sv[0]); if (!client) { close(sv[0]); weston_log("weston_client_launch: " "wl_client_create failed while launching '%s'.\n", path); return NULL; } proc->pid = pid; proc->cleanup = cleanup; weston_watch_process(proc); return client; } static void surface_handle_pending_buffer_destroy(struct wl_listener *listener, void *data) { struct weston_surface *surface = container_of(listener, struct weston_surface, pending.buffer_destroy_listener); surface->pending.buffer = NULL; } static void empty_region(pixman_region32_t *region) { pixman_region32_fini(region); pixman_region32_init(region); } static void region_init_infinite(pixman_region32_t *region) { pixman_region32_init_rect(region, INT32_MIN, INT32_MIN, UINT32_MAX, UINT32_MAX); } static struct weston_subsurface * weston_surface_to_subsurface(struct weston_surface *surface); WL_EXPORT struct weston_surface * weston_surface_create(struct weston_compositor *compositor) { struct weston_surface *surface; surface = calloc(1, sizeof *surface); if (surface == NULL) return NULL; wl_signal_init(&surface->resource.destroy_signal); wl_list_init(&surface->link); wl_list_init(&surface->layer_link); surface->resource.client = NULL; surface->compositor = compositor; surface->alpha = 1.0; if (compositor->renderer->create_surface(surface) < 0) { free(surface); return NULL; } surface->buffer_transform = WL_OUTPUT_TRANSFORM_NORMAL; surface->pending.buffer_transform = surface->buffer_transform; surface->output = NULL; surface->plane = &compositor->primary_plane; surface->pending.newly_attached = 0; pixman_region32_init(&surface->damage); pixman_region32_init(&surface->opaque); pixman_region32_init(&surface->clip); region_init_infinite(&surface->input); pixman_region32_init(&surface->transform.opaque); wl_list_init(&surface->frame_callback_list); wl_list_init(&surface->geometry.transformation_list); wl_list_insert(&surface->geometry.transformation_list, &surface->transform.position.link); weston_matrix_init(&surface->transform.position.matrix); wl_list_init(&surface->geometry.child_list); pixman_region32_init(&surface->transform.boundingbox); surface->transform.dirty = 1; surface->pending.buffer_destroy_listener.notify = surface_handle_pending_buffer_destroy; pixman_region32_init(&surface->pending.damage); pixman_region32_init(&surface->pending.opaque); region_init_infinite(&surface->pending.input); wl_list_init(&surface->pending.frame_callback_list); wl_list_init(&surface->subsurface_list); wl_list_init(&surface->subsurface_list_pending); return surface; } WL_EXPORT void weston_surface_set_color(struct weston_surface *surface, float red, float green, float blue, float alpha) { surface->compositor->renderer->surface_set_color(surface, red, green, blue, alpha); } WL_EXPORT void weston_surface_to_global_float(struct weston_surface *surface, float sx, float sy, float *x, float *y) { if (surface->transform.enabled) { struct weston_vector v = { { sx, sy, 0.0f, 1.0f } }; weston_matrix_transform(&surface->transform.matrix, &v); if (fabsf(v.f[3]) < 1e-6) { weston_log("warning: numerical instability in " "%s(), divisor = %g\n", __func__, v.f[3]); *x = 0; *y = 0; return; } *x = v.f[0] / v.f[3]; *y = v.f[1] / v.f[3]; } else { *x = sx + surface->geometry.x; *y = sy + surface->geometry.y; } } WL_EXPORT void weston_transformed_coord(int width, int height, enum wl_output_transform transform, float sx, float sy, float *bx, float *by) { switch (transform) { case WL_OUTPUT_TRANSFORM_NORMAL: default: *bx = sx; *by = sy; break; case WL_OUTPUT_TRANSFORM_FLIPPED: *bx = width - sx; *by = sy; break; case WL_OUTPUT_TRANSFORM_90: *bx = height - sy; *by = sx; break; case WL_OUTPUT_TRANSFORM_FLIPPED_90: *bx = height - sy; *by = width - sx; break; case WL_OUTPUT_TRANSFORM_180: *bx = width - sx; *by = height - sy; break; case WL_OUTPUT_TRANSFORM_FLIPPED_180: *bx = sx; *by = height - sy; break; case WL_OUTPUT_TRANSFORM_270: *bx = sy; *by = width - sx; break; case WL_OUTPUT_TRANSFORM_FLIPPED_270: *bx = sy; *by = sx; break; } } WL_EXPORT pixman_box32_t weston_transformed_rect(int width, int height, enum wl_output_transform transform, pixman_box32_t rect) { float x1, x2, y1, y2; pixman_box32_t ret; weston_transformed_coord(width, height, transform, rect.x1, rect.y1, &x1, &y1); weston_transformed_coord(width, height, transform, rect.x2, rect.y2, &x2, &y2); if (x1 <= x2) { ret.x1 = x1; ret.x2 = x2; } else { ret.x1 = x2; ret.x2 = x1; } if (y1 <= y2) { ret.y1 = y1; ret.y2 = y2; } else { ret.y1 = y2; ret.y2 = y1; } return ret; } WL_EXPORT void weston_surface_to_buffer_float(struct weston_surface *surface, float sx, float sy, float *bx, float *by) { weston_transformed_coord(surface->geometry.width, surface->geometry.height, surface->buffer_transform, sx, sy, bx, by); } WL_EXPORT pixman_box32_t weston_surface_to_buffer_rect(struct weston_surface *surface, pixman_box32_t rect) { return weston_transformed_rect(surface->geometry.width, surface->geometry.height, surface->buffer_transform, rect); } WL_EXPORT void weston_surface_move_to_plane(struct weston_surface *surface, struct weston_plane *plane) { if (surface->plane == plane) return; weston_surface_damage_below(surface); surface->plane = plane; weston_surface_damage(surface); } WL_EXPORT void weston_surface_damage_below(struct weston_surface *surface) { pixman_region32_t damage; pixman_region32_init(&damage); pixman_region32_subtract(&damage, &surface->transform.boundingbox, &surface->clip); pixman_region32_union(&surface->plane->damage, &surface->plane->damage, &damage); pixman_region32_fini(&damage); } static struct wl_resource * find_resource_for_client(struct wl_list *list, struct wl_client *client) { struct wl_resource *r; wl_list_for_each(r, list, link) { if (r->client == client) return r; } return NULL; } static void weston_surface_update_output_mask(struct weston_surface *es, uint32_t mask) { uint32_t different = es->output_mask ^ mask; uint32_t entered = mask & different; uint32_t left = es->output_mask & different; struct weston_output *output; struct wl_resource *resource = NULL; struct wl_client *client = es->resource.client; es->output_mask = mask; if (es->resource.client == NULL) return; if (different == 0) return; wl_list_for_each(output, &es->compositor->output_list, link) { if (1 << output->id & different) resource = find_resource_for_client(&output->resource_list, client); if (resource == NULL) continue; if (1 << output->id & entered) wl_surface_send_enter(&es->resource, resource); if (1 << output->id & left) wl_surface_send_leave(&es->resource, resource); } } static void weston_surface_assign_output(struct weston_surface *es) { struct weston_compositor *ec = es->compositor; struct weston_output *output, *new_output; pixman_region32_t region; uint32_t max, area, mask; pixman_box32_t *e; new_output = NULL; max = 0; mask = 0; pixman_region32_init(®ion); wl_list_for_each(output, &ec->output_list, link) { pixman_region32_intersect(®ion, &es->transform.boundingbox, &output->region); e = pixman_region32_extents(®ion); area = (e->x2 - e->x1) * (e->y2 - e->y1); if (area > 0) mask |= 1 << output->id; if (area >= max) { new_output = output; max = area; } } pixman_region32_fini(®ion); es->output = new_output; weston_surface_update_output_mask(es, mask); } static void surface_compute_bbox(struct weston_surface *surface, int32_t sx, int32_t sy, int32_t width, int32_t height, pixman_region32_t *bbox) { float min_x = HUGE_VALF, min_y = HUGE_VALF; float max_x = -HUGE_VALF, max_y = -HUGE_VALF; int32_t s[4][2] = { { sx, sy }, { sx, sy + height }, { sx + width, sy }, { sx + width, sy + height } }; float int_x, int_y; int i; if (width == 0 || height == 0) { /* avoid rounding empty bbox to 1x1 */ pixman_region32_init(bbox); return; } for (i = 0; i < 4; ++i) { float x, y; weston_surface_to_global_float(surface, s[i][0], s[i][1], &x, &y); if (x < min_x) min_x = x; if (x > max_x) max_x = x; if (y < min_y) min_y = y; if (y > max_y) max_y = y; } int_x = floorf(min_x); int_y = floorf(min_y); pixman_region32_init_rect(bbox, int_x, int_y, ceilf(max_x) - int_x, ceilf(max_y) - int_y); } static void weston_surface_update_transform_disable(struct weston_surface *surface) { surface->transform.enabled = 0; /* round off fractions when not transformed */ surface->geometry.x = roundf(surface->geometry.x); surface->geometry.y = roundf(surface->geometry.y); /* Otherwise identity matrix, but with x and y translation. */ surface->transform.position.matrix.type = WESTON_MATRIX_TRANSFORM_TRANSLATE; surface->transform.position.matrix.d[12] = surface->geometry.x; surface->transform.position.matrix.d[13] = surface->geometry.y; surface->transform.matrix = surface->transform.position.matrix; surface->transform.inverse = surface->transform.position.matrix; surface->transform.inverse.d[12] = -surface->geometry.x; surface->transform.inverse.d[13] = -surface->geometry.y; pixman_region32_init_rect(&surface->transform.boundingbox, surface->geometry.x, surface->geometry.y, surface->geometry.width, surface->geometry.height); if (surface->alpha == 1.0) { pixman_region32_copy(&surface->transform.opaque, &surface->opaque); pixman_region32_translate(&surface->transform.opaque, surface->geometry.x, surface->geometry.y); } } static int weston_surface_update_transform_enable(struct weston_surface *surface) { struct weston_surface *parent = surface->geometry.parent; struct weston_matrix *matrix = &surface->transform.matrix; struct weston_matrix *inverse = &surface->transform.inverse; struct weston_transform *tform; surface->transform.enabled = 1; /* Otherwise identity matrix, but with x and y translation. */ surface->transform.position.matrix.type = WESTON_MATRIX_TRANSFORM_TRANSLATE; surface->transform.position.matrix.d[12] = surface->geometry.x; surface->transform.position.matrix.d[13] = surface->geometry.y; weston_matrix_init(matrix); wl_list_for_each(tform, &surface->geometry.transformation_list, link) weston_matrix_multiply(matrix, &tform->matrix); if (parent) weston_matrix_multiply(matrix, &parent->transform.matrix); if (weston_matrix_invert(inverse, matrix) < 0) { /* Oops, bad total transformation, not invertible */ weston_log("error: weston_surface %p" " transformation not invertible.\n", surface); return -1; } surface_compute_bbox(surface, 0, 0, surface->geometry.width, surface->geometry.height, &surface->transform.boundingbox); return 0; } WL_EXPORT void weston_surface_update_transform(struct weston_surface *surface) { struct weston_surface *parent = surface->geometry.parent; if (!surface->transform.dirty) return; if (parent) weston_surface_update_transform(parent); surface->transform.dirty = 0; weston_surface_damage_below(surface); pixman_region32_fini(&surface->transform.boundingbox); pixman_region32_fini(&surface->transform.opaque); pixman_region32_init(&surface->transform.opaque); /* transform.position is always in transformation_list */ if (surface->geometry.transformation_list.next == &surface->transform.position.link && surface->geometry.transformation_list.prev == &surface->transform.position.link && !parent) { weston_surface_update_transform_disable(surface); } else { if (weston_surface_update_transform_enable(surface) < 0) weston_surface_update_transform_disable(surface); } weston_surface_damage_below(surface); weston_surface_assign_output(surface); } WL_EXPORT void weston_surface_geometry_dirty(struct weston_surface *surface) { struct weston_surface *child; /* * The invariant: if surface->geometry.dirty, then all surfaces * in surface->geometry.child_list have geometry.dirty too. * Corollary: if not parent->geometry.dirty, then all ancestors * are not dirty. */ if (surface->transform.dirty) return; surface->transform.dirty = 1; wl_list_for_each(child, &surface->geometry.child_list, geometry.parent_link) weston_surface_geometry_dirty(child); } WL_EXPORT void weston_surface_to_global_fixed(struct weston_surface *surface, wl_fixed_t sx, wl_fixed_t sy, wl_fixed_t *x, wl_fixed_t *y) { float xf, yf; weston_surface_to_global_float(surface, wl_fixed_to_double(sx), wl_fixed_to_double(sy), &xf, &yf); *x = wl_fixed_from_double(xf); *y = wl_fixed_from_double(yf); } WL_EXPORT void weston_surface_from_global_float(struct weston_surface *surface, float x, float y, float *sx, float *sy) { if (surface->transform.enabled) { struct weston_vector v = { { x, y, 0.0f, 1.0f } }; weston_matrix_transform(&surface->transform.inverse, &v); if (fabsf(v.f[3]) < 1e-6) { weston_log("warning: numerical instability in " "weston_surface_from_global(), divisor = %g\n", v.f[3]); *sx = 0; *sy = 0; return; } *sx = v.f[0] / v.f[3]; *sy = v.f[1] / v.f[3]; } else { *sx = x - surface->geometry.x; *sy = y - surface->geometry.y; } } WL_EXPORT void weston_surface_from_global_fixed(struct weston_surface *surface, wl_fixed_t x, wl_fixed_t y, wl_fixed_t *sx, wl_fixed_t *sy) { float sxf, syf; weston_surface_from_global_float(surface, wl_fixed_to_double(x), wl_fixed_to_double(y), &sxf, &syf); *sx = wl_fixed_from_double(sxf); *sy = wl_fixed_from_double(syf); } WL_EXPORT void weston_surface_from_global(struct weston_surface *surface, int32_t x, int32_t y, int32_t *sx, int32_t *sy) { float sxf, syf; weston_surface_from_global_float(surface, x, y, &sxf, &syf); *sx = floorf(sxf); *sy = floorf(syf); } WL_EXPORT void weston_surface_schedule_repaint(struct weston_surface *surface) { struct weston_output *output; wl_list_for_each(output, &surface->compositor->output_list, link) if (surface->output_mask & (1 << output->id)) weston_output_schedule_repaint(output); } WL_EXPORT void weston_surface_damage(struct weston_surface *surface) { pixman_region32_union_rect(&surface->damage, &surface->damage, 0, 0, surface->geometry.width, surface->geometry.height); weston_surface_schedule_repaint(surface); } WL_EXPORT void weston_surface_configure(struct weston_surface *surface, float x, float y, int width, int height) { surface->geometry.x = x; surface->geometry.y = y; surface->geometry.width = width; surface->geometry.height = height; weston_surface_geometry_dirty(surface); } WL_EXPORT void weston_surface_set_position(struct weston_surface *surface, float x, float y) { surface->geometry.x = x; surface->geometry.y = y; weston_surface_geometry_dirty(surface); } static void transform_parent_handle_parent_destroy(struct wl_listener *listener, void *data) { struct weston_surface *surface = container_of(listener, struct weston_surface, geometry.parent_destroy_listener); weston_surface_set_transform_parent(surface, NULL); } WL_EXPORT void weston_surface_set_transform_parent(struct weston_surface *surface, struct weston_surface *parent) { if (surface->geometry.parent) { wl_list_remove(&surface->geometry.parent_destroy_listener.link); wl_list_remove(&surface->geometry.parent_link); } surface->geometry.parent = parent; surface->geometry.parent_destroy_listener.notify = transform_parent_handle_parent_destroy; if (parent) { wl_signal_add(&parent->resource.destroy_signal, &surface->geometry.parent_destroy_listener); wl_list_insert(&parent->geometry.child_list, &surface->geometry.parent_link); } weston_surface_geometry_dirty(surface); } WL_EXPORT int weston_surface_is_mapped(struct weston_surface *surface) { if (surface->output) return 1; else return 0; } WL_EXPORT int32_t weston_surface_buffer_width(struct weston_surface *surface) { switch (surface->buffer_transform) { case WL_OUTPUT_TRANSFORM_90: case WL_OUTPUT_TRANSFORM_270: case WL_OUTPUT_TRANSFORM_FLIPPED_90: case WL_OUTPUT_TRANSFORM_FLIPPED_270: return surface->buffer_ref.buffer->height; default: return surface->buffer_ref.buffer->width; } } WL_EXPORT int32_t weston_surface_buffer_height(struct weston_surface *surface) { switch (surface->buffer_transform) { case WL_OUTPUT_TRANSFORM_90: case WL_OUTPUT_TRANSFORM_270: case WL_OUTPUT_TRANSFORM_FLIPPED_90: case WL_OUTPUT_TRANSFORM_FLIPPED_270: return surface->buffer_ref.buffer->width; default: return surface->buffer_ref.buffer->height; } } WL_EXPORT uint32_t weston_compositor_get_time(void) { struct timeval tv; gettimeofday(&tv, NULL); return tv.tv_sec * 1000 + tv.tv_usec / 1000; } WL_EXPORT struct weston_surface * weston_compositor_pick_surface(struct weston_compositor *compositor, wl_fixed_t x, wl_fixed_t y, wl_fixed_t *sx, wl_fixed_t *sy) { struct weston_surface *surface; wl_list_for_each(surface, &compositor->surface_list, link) { weston_surface_from_global_fixed(surface, x, y, sx, sy); if (pixman_region32_contains_point(&surface->input, wl_fixed_to_int(*sx), wl_fixed_to_int(*sy), NULL)) return surface; } return NULL; } static void weston_compositor_repick(struct weston_compositor *compositor) { struct weston_seat *seat; if (!compositor->focus) return; wl_list_for_each(seat, &compositor->seat_list, link) weston_seat_repick(seat); } WL_EXPORT void weston_surface_unmap(struct weston_surface *surface) { struct weston_seat *seat; weston_surface_damage_below(surface); surface->output = NULL; wl_list_remove(&surface->layer_link); wl_list_for_each(seat, &surface->compositor->seat_list, link) { if (seat->keyboard && seat->keyboard->focus == surface) weston_keyboard_set_focus(seat->keyboard, NULL); if (seat->pointer && seat->pointer->focus == surface) weston_pointer_set_focus(seat->pointer, NULL, wl_fixed_from_int(0), wl_fixed_from_int(0)); } weston_surface_schedule_repaint(surface); } struct weston_frame_callback { struct wl_resource resource; struct wl_list link; }; static void destroy_surface(struct wl_resource *resource) { struct weston_surface *surface = container_of(resource, struct weston_surface, resource); struct weston_compositor *compositor = surface->compositor; struct weston_frame_callback *cb, *next; assert(wl_list_empty(&surface->geometry.child_list)); assert(wl_list_empty(&surface->subsurface_list_pending)); assert(wl_list_empty(&surface->subsurface_list)); if (weston_surface_is_mapped(surface)) weston_surface_unmap(surface); wl_list_for_each_safe(cb, next, &surface->pending.frame_callback_list, link) wl_resource_destroy(&cb->resource); pixman_region32_fini(&surface->pending.input); pixman_region32_fini(&surface->pending.opaque); pixman_region32_fini(&surface->pending.damage); if (surface->pending.buffer) wl_list_remove(&surface->pending.buffer_destroy_listener.link); weston_buffer_reference(&surface->buffer_ref, NULL); compositor->renderer->destroy_surface(surface); pixman_region32_fini(&surface->transform.boundingbox); pixman_region32_fini(&surface->damage); pixman_region32_fini(&surface->opaque); pixman_region32_fini(&surface->clip); pixman_region32_fini(&surface->input); wl_list_for_each_safe(cb, next, &surface->frame_callback_list, link) wl_resource_destroy(&cb->resource); weston_surface_set_transform_parent(surface, NULL); free(surface); } WL_EXPORT void weston_surface_destroy(struct weston_surface *surface) { /* Not a valid way to destroy a client surface */ assert(surface->resource.client == NULL); wl_signal_emit(&surface->resource.destroy_signal, &surface->resource); destroy_surface(&surface->resource); } static void weston_buffer_reference_handle_destroy(struct wl_listener *listener, void *data) { struct weston_buffer_reference *ref = container_of(listener, struct weston_buffer_reference, destroy_listener); assert((struct wl_buffer *)data == ref->buffer); ref->buffer = NULL; } WL_EXPORT void weston_buffer_reference(struct weston_buffer_reference *ref, struct wl_buffer *buffer) { if (ref->buffer && buffer != ref->buffer) { ref->buffer->busy_count--; if (ref->buffer->busy_count == 0) { assert(ref->buffer->resource.client != NULL); wl_resource_queue_event(&ref->buffer->resource, WL_BUFFER_RELEASE); } wl_list_remove(&ref->destroy_listener.link); } if (buffer && buffer != ref->buffer) { buffer->busy_count++; wl_signal_add(&buffer->resource.destroy_signal, &ref->destroy_listener); } ref->buffer = buffer; ref->destroy_listener.notify = weston_buffer_reference_handle_destroy; } static void weston_surface_attach(struct weston_surface *surface, struct wl_buffer *buffer) { weston_buffer_reference(&surface->buffer_ref, buffer); if (!buffer) { if (weston_surface_is_mapped(surface)) weston_surface_unmap(surface); } surface->compositor->renderer->attach(surface, buffer); } WL_EXPORT void weston_surface_restack(struct weston_surface *surface, struct wl_list *below) { wl_list_remove(&surface->layer_link); wl_list_insert(below, &surface->layer_link); weston_surface_damage_below(surface); weston_surface_damage(surface); } WL_EXPORT void weston_compositor_damage_all(struct weston_compositor *compositor) { struct weston_output *output; wl_list_for_each(output, &compositor->output_list, link) weston_output_damage(output); } WL_EXPORT void weston_output_damage(struct weston_output *output) { struct weston_compositor *compositor = output->compositor; pixman_region32_union(&compositor->primary_plane.damage, &compositor->primary_plane.damage, &output->region); weston_output_schedule_repaint(output); } static void surface_accumulate_damage(struct weston_surface *surface, pixman_region32_t *opaque) { if (surface->buffer_ref.buffer && wl_buffer_is_shm(surface->buffer_ref.buffer)) surface->compositor->renderer->flush_damage(surface); if (surface->transform.enabled) { pixman_box32_t *extents; extents = pixman_region32_extents(&surface->damage); surface_compute_bbox(surface, extents->x1, extents->y1, extents->x2 - extents->x1, extents->y2 - extents->y1, &surface->damage); pixman_region32_translate(&surface->damage, -surface->plane->x, -surface->plane->y); } else { pixman_region32_translate(&surface->damage, surface->geometry.x - surface->plane->x, surface->geometry.y - surface->plane->y); } pixman_region32_subtract(&surface->damage, &surface->damage, opaque); pixman_region32_union(&surface->plane->damage, &surface->plane->damage, &surface->damage); empty_region(&surface->damage); pixman_region32_copy(&surface->clip, opaque); pixman_region32_union(opaque, opaque, &surface->transform.opaque); } static void compositor_accumulate_damage(struct weston_compositor *ec) { struct weston_plane *plane; struct weston_surface *es; pixman_region32_t opaque, clip; pixman_region32_init(&clip); wl_list_for_each(plane, &ec->plane_list, link) { pixman_region32_copy(&plane->clip, &clip); pixman_region32_init(&opaque); wl_list_for_each(es, &ec->surface_list, link) { if (es->plane != plane) continue; surface_accumulate_damage(es, &opaque); } pixman_region32_union(&clip, &clip, &opaque); pixman_region32_fini(&opaque); } pixman_region32_fini(&clip); wl_list_for_each(es, &ec->surface_list, link) { /* Both the renderer and the backend have seen the buffer * by now. If renderer needs the buffer, it has its own * reference set. If the backend wants to keep the buffer * around for migrating the surface into a non-primary plane * later, keep_buffer is true. Otherwise, drop the core * reference now, and allow early buffer release. This enables * clients to use single-buffering. */ if (!es->keep_buffer) weston_buffer_reference(&es->buffer_ref, NULL); } } static void surface_list_add(struct weston_compositor *compositor, struct weston_surface *surface) { struct weston_subsurface *sub; if (wl_list_empty(&surface->subsurface_list)) { weston_surface_update_transform(surface); wl_list_insert(compositor->surface_list.prev, &surface->link); return; } wl_list_for_each(sub, &surface->subsurface_list, parent_link) { if (!weston_surface_is_mapped(sub->surface)) continue; if (sub->surface == surface) { weston_surface_update_transform(sub->surface); wl_list_insert(compositor->surface_list.prev, &sub->surface->link); } else { surface_list_add(compositor, sub->surface); } } } static void weston_compositor_build_surface_list(struct weston_compositor *compositor) { struct weston_surface *surface; struct weston_layer *layer; wl_list_init(&compositor->surface_list); wl_list_for_each(layer, &compositor->layer_list, link) { wl_list_for_each(surface, &layer->surface_list, layer_link) { surface_list_add(compositor, surface); } } } static void weston_output_repaint(struct weston_output *output, uint32_t msecs) { struct weston_compositor *ec = output->compositor; struct weston_surface *es; struct weston_animation *animation, *next; struct weston_frame_callback *cb, *cnext; struct wl_list frame_callback_list; pixman_region32_t output_damage; /* Rebuild the surface list and update surface transforms up front. */ weston_compositor_build_surface_list(ec); if (output->assign_planes && !output->disable_planes) output->assign_planes(output); else wl_list_for_each(es, &ec->surface_list, link) weston_surface_move_to_plane(es, &ec->primary_plane); wl_list_init(&frame_callback_list); wl_list_for_each(es, &ec->surface_list, link) { if (es->output == output) { wl_list_insert_list(&frame_callback_list, &es->frame_callback_list); wl_list_init(&es->frame_callback_list); } } compositor_accumulate_damage(ec); pixman_region32_init(&output_damage); pixman_region32_intersect(&output_damage, &ec->primary_plane.damage, &output->region); pixman_region32_subtract(&output_damage, &output_damage, &ec->primary_plane.clip); if (output->dirty) weston_output_update_matrix(output); output->repaint(output, &output_damage); pixman_region32_fini(&output_damage); output->repaint_needed = 0; weston_compositor_repick(ec); wl_event_loop_dispatch(ec->input_loop, 0); wl_list_for_each_safe(cb, cnext, &frame_callback_list, link) { wl_callback_send_done(&cb->resource, msecs); wl_resource_destroy(&cb->resource); } wl_list_for_each_safe(animation, next, &output->animation_list, link) { animation->frame_counter++; animation->frame(animation, output, msecs); } } static int weston_compositor_read_input(int fd, uint32_t mask, void *data) { struct weston_compositor *compositor = data; wl_event_loop_dispatch(compositor->input_loop, 0); return 1; } WL_EXPORT void weston_output_finish_frame(struct weston_output *output, uint32_t msecs) { struct weston_compositor *compositor = output->compositor; struct wl_event_loop *loop = wl_display_get_event_loop(compositor->wl_display); int fd; output->frame_time = msecs; if (output->repaint_needed) { weston_output_repaint(output, msecs); return; } output->repaint_scheduled = 0; if (compositor->input_loop_source) return; fd = wl_event_loop_get_fd(compositor->input_loop); compositor->input_loop_source = wl_event_loop_add_fd(loop, fd, WL_EVENT_READABLE, weston_compositor_read_input, compositor); } static void idle_repaint(void *data) { struct weston_output *output = data; output->start_repaint_loop(output); } WL_EXPORT void weston_layer_init(struct weston_layer *layer, struct wl_list *below) { wl_list_init(&layer->surface_list); if (below != NULL) wl_list_insert(below, &layer->link); } WL_EXPORT void weston_output_schedule_repaint(struct weston_output *output) { struct weston_compositor *compositor = output->compositor; struct wl_event_loop *loop; if (compositor->state == WESTON_COMPOSITOR_SLEEPING || compositor->state == WESTON_COMPOSITOR_OFFSCREEN) return; loop = wl_display_get_event_loop(compositor->wl_display); output->repaint_needed = 1; if (output->repaint_scheduled) return; wl_event_loop_add_idle(loop, idle_repaint, output); output->repaint_scheduled = 1; if (compositor->input_loop_source) { wl_event_source_remove(compositor->input_loop_source); compositor->input_loop_source = NULL; } } WL_EXPORT void weston_compositor_schedule_repaint(struct weston_compositor *compositor) { struct weston_output *output; wl_list_for_each(output, &compositor->output_list, link) weston_output_schedule_repaint(output); } static void surface_destroy(struct wl_client *client, struct wl_resource *resource) { wl_resource_destroy(resource); } static void surface_attach(struct wl_client *client, struct wl_resource *resource, struct wl_resource *buffer_resource, int32_t sx, int32_t sy) { struct weston_surface *surface = resource->data; struct wl_buffer *buffer = NULL; if (buffer_resource) buffer = buffer_resource->data; /* Attach, attach, without commit in between does not send * wl_buffer.release. */ if (surface->pending.buffer) wl_list_remove(&surface->pending.buffer_destroy_listener.link); surface->pending.sx = sx; surface->pending.sy = sy; surface->pending.buffer = buffer; surface->pending.newly_attached = 1; if (buffer) { wl_signal_add(&buffer->resource.destroy_signal, &surface->pending.buffer_destroy_listener); } } static void surface_damage(struct wl_client *client, struct wl_resource *resource, int32_t x, int32_t y, int32_t width, int32_t height) { struct weston_surface *surface = resource->data; pixman_region32_union_rect(&surface->pending.damage, &surface->pending.damage, x, y, width, height); } static void destroy_frame_callback(struct wl_resource *resource) { struct weston_frame_callback *cb = resource->data; wl_list_remove(&cb->link); free(cb); } static void surface_frame(struct wl_client *client, struct wl_resource *resource, uint32_t callback) { struct weston_frame_callback *cb; struct weston_surface *surface = resource->data; cb = malloc(sizeof *cb); if (cb == NULL) { wl_resource_post_no_memory(resource); return; } cb->resource.object.interface = &wl_callback_interface; cb->resource.object.id = callback; cb->resource.destroy = destroy_frame_callback; cb->resource.client = client; cb->resource.data = cb; wl_client_add_resource(client, &cb->resource); wl_list_insert(surface->pending.frame_callback_list.prev, &cb->link); } static void surface_set_opaque_region(struct wl_client *client, struct wl_resource *resource, struct wl_resource *region_resource) { struct weston_surface *surface = resource->data; struct weston_region *region; if (region_resource) { region = region_resource->data; pixman_region32_copy(&surface->pending.opaque, ®ion->region); } else { empty_region(&surface->pending.opaque); } } static void surface_set_input_region(struct wl_client *client, struct wl_resource *resource, struct wl_resource *region_resource) { struct weston_surface *surface = resource->data; struct weston_region *region; if (region_resource) { region = region_resource->data; pixman_region32_copy(&surface->pending.input, ®ion->region); } else { pixman_region32_fini(&surface->pending.input); region_init_infinite(&surface->pending.input); } } static void weston_surface_commit_subsurface_order(struct weston_surface *surface) { struct weston_subsurface *sub; wl_list_for_each_reverse(sub, &surface->subsurface_list_pending, parent_link_pending) { wl_list_remove(&sub->parent_link); wl_list_insert(&surface->subsurface_list, &sub->parent_link); } } static void weston_surface_commit(struct weston_surface *surface) { pixman_region32_t opaque; int buffer_width = 0; int buffer_height = 0; /* wl_surface.set_buffer_rotation */ surface->buffer_transform = surface->pending.buffer_transform; /* wl_surface.attach */ if (surface->pending.buffer || surface->pending.newly_attached) weston_surface_attach(surface, surface->pending.buffer); if (surface->buffer_ref.buffer) { buffer_width = weston_surface_buffer_width(surface); buffer_height = weston_surface_buffer_height(surface); } if (surface->configure && surface->pending.newly_attached) surface->configure(surface, surface->pending.sx, surface->pending.sy, buffer_width, buffer_height); if (surface->pending.buffer) wl_list_remove(&surface->pending.buffer_destroy_listener.link); surface->pending.buffer = NULL; surface->pending.sx = 0; surface->pending.sy = 0; surface->pending.newly_attached = 0; /* wl_surface.damage */ pixman_region32_union(&surface->damage, &surface->damage, &surface->pending.damage); pixman_region32_intersect_rect(&surface->damage, &surface->damage, 0, 0, surface->geometry.width, surface->geometry.height); empty_region(&surface->pending.damage); /* wl_surface.set_opaque_region */ pixman_region32_init_rect(&opaque, 0, 0, surface->geometry.width, surface->geometry.height); pixman_region32_intersect(&opaque, &opaque, &surface->pending.opaque); if (!pixman_region32_equal(&opaque, &surface->opaque)) { pixman_region32_copy(&surface->opaque, &opaque); weston_surface_geometry_dirty(surface); } pixman_region32_fini(&opaque); /* wl_surface.set_input_region */ pixman_region32_fini(&surface->input); pixman_region32_init_rect(&surface->input, 0, 0, surface->geometry.width, surface->geometry.height); pixman_region32_intersect(&surface->input, &surface->input, &surface->pending.input); /* wl_surface.frame */ wl_list_insert_list(&surface->frame_callback_list, &surface->pending.frame_callback_list); wl_list_init(&surface->pending.frame_callback_list); weston_surface_commit_subsurface_order(surface); weston_surface_schedule_repaint(surface); } static void weston_subsurface_commit(struct weston_subsurface *sub); static void weston_subsurface_parent_commit(struct weston_subsurface *sub, int parent_is_synchronized); static void surface_commit(struct wl_client *client, struct wl_resource *resource) { struct weston_surface *surface = resource->data; struct weston_subsurface *sub = weston_surface_to_subsurface(surface); if (sub) { weston_subsurface_commit(sub); return; } weston_surface_commit(surface); wl_list_for_each(sub, &surface->subsurface_list, parent_link) { if (sub->surface != surface) weston_subsurface_parent_commit(sub, 0); } } static void surface_set_buffer_transform(struct wl_client *client, struct wl_resource *resource, int transform) { struct weston_surface *surface = resource->data; surface->pending.buffer_transform = transform; } static const struct wl_surface_interface surface_interface = { surface_destroy, surface_attach, surface_damage, surface_frame, surface_set_opaque_region, surface_set_input_region, surface_commit, surface_set_buffer_transform }; static void compositor_create_surface(struct wl_client *client, struct wl_resource *resource, uint32_t id) { struct weston_compositor *ec = resource->data; struct weston_surface *surface; surface = weston_surface_create(ec); if (surface == NULL) { wl_resource_post_no_memory(resource); return; } surface->resource.destroy = destroy_surface; surface->resource.object.id = id; surface->resource.object.interface = &wl_surface_interface; surface->resource.object.implementation = (void (**)(void)) &surface_interface; surface->resource.data = surface; wl_client_add_resource(client, &surface->resource); } static void destroy_region(struct wl_resource *resource) { struct weston_region *region = container_of(resource, struct weston_region, resource); pixman_region32_fini(®ion->region); free(region); } static void region_destroy(struct wl_client *client, struct wl_resource *resource) { wl_resource_destroy(resource); } static void region_add(struct wl_client *client, struct wl_resource *resource, int32_t x, int32_t y, int32_t width, int32_t height) { struct weston_region *region = resource->data; pixman_region32_union_rect(®ion->region, ®ion->region, x, y, width, height); } static void region_subtract(struct wl_client *client, struct wl_resource *resource, int32_t x, int32_t y, int32_t width, int32_t height) { struct weston_region *region = resource->data; pixman_region32_t rect; pixman_region32_init_rect(&rect, x, y, width, height); pixman_region32_subtract(®ion->region, ®ion->region, &rect); pixman_region32_fini(&rect); } static const struct wl_region_interface region_interface = { region_destroy, region_add, region_subtract }; static void compositor_create_region(struct wl_client *client, struct wl_resource *resource, uint32_t id) { struct weston_region *region; region = malloc(sizeof *region); if (region == NULL) { wl_resource_post_no_memory(resource); return; } region->resource.destroy = destroy_region; region->resource.object.id = id; region->resource.object.interface = &wl_region_interface; region->resource.object.implementation = (void (**)(void)) ®ion_interface; region->resource.data = region; pixman_region32_init(®ion->region); wl_client_add_resource(client, ®ion->resource); } static const struct wl_compositor_interface compositor_interface = { compositor_create_surface, compositor_create_region }; static void weston_subsurface_commit_from_cache(struct weston_subsurface *sub) { struct weston_surface *surface = sub->surface; pixman_region32_t opaque; int buffer_width = 0; int buffer_height = 0; /* wl_surface.set_buffer_rotation */ surface->buffer_transform = sub->cached.buffer_transform; /* wl_surface.attach */ if (sub->cached.buffer_ref.buffer || sub->cached.newly_attached) weston_surface_attach(surface, sub->cached.buffer_ref.buffer); weston_buffer_reference(&sub->cached.buffer_ref, NULL); if (surface->buffer_ref.buffer) { buffer_width = weston_surface_buffer_width(surface); buffer_height = weston_surface_buffer_height(surface); } if (surface->configure && sub->cached.newly_attached) surface->configure(surface, sub->cached.sx, sub->cached.sy, buffer_width, buffer_height); sub->cached.sx = 0; sub->cached.sy = 0; sub->cached.newly_attached = 0; /* wl_surface.damage */ pixman_region32_union(&surface->damage, &surface->damage, &sub->cached.damage); pixman_region32_intersect_rect(&surface->damage, &surface->damage, 0, 0, surface->geometry.width, surface->geometry.height); empty_region(&sub->cached.damage); /* wl_surface.set_opaque_region */ pixman_region32_init_rect(&opaque, 0, 0, surface->geometry.width, surface->geometry.height); pixman_region32_intersect(&opaque, &opaque, &sub->cached.opaque); if (!pixman_region32_equal(&opaque, &surface->opaque)) { pixman_region32_copy(&surface->opaque, &opaque); weston_surface_geometry_dirty(surface); } pixman_region32_fini(&opaque); /* wl_surface.set_input_region */ pixman_region32_fini(&surface->input); pixman_region32_init_rect(&surface->input, 0, 0, surface->geometry.width, surface->geometry.height); pixman_region32_intersect(&surface->input, &surface->input, &sub->cached.input); /* wl_surface.frame */ wl_list_insert_list(&surface->frame_callback_list, &sub->cached.frame_callback_list); wl_list_init(&sub->cached.frame_callback_list); weston_surface_commit_subsurface_order(surface); weston_surface_schedule_repaint(surface); sub->cached.has_data = 0; } static void weston_subsurface_commit_to_cache(struct weston_subsurface *sub) { struct weston_surface *surface = sub->surface; /* * If this commit would cause the surface to move by the * attach(dx, dy) parameters, the old damage region must be * translated to correspond to the new surface coordinate system * origin. */ pixman_region32_translate(&sub->cached.damage, -surface->pending.sx, -surface->pending.sy); pixman_region32_union(&sub->cached.damage, &sub->cached.damage, &surface->pending.damage); empty_region(&surface->pending.damage); if (surface->pending.newly_attached) { sub->cached.newly_attached = 1; weston_buffer_reference(&sub->cached.buffer_ref, surface->pending.buffer); } sub->cached.sx += surface->pending.sx; sub->cached.sy += surface->pending.sy; surface->pending.sx = 0; surface->pending.sy = 0; surface->pending.newly_attached = 0; sub->cached.buffer_transform = surface->pending.buffer_transform; pixman_region32_copy(&sub->cached.opaque, &surface->pending.opaque); pixman_region32_copy(&sub->cached.input, &surface->pending.input); wl_list_insert_list(&sub->cached.frame_callback_list, &surface->pending.frame_callback_list); wl_list_init(&surface->pending.frame_callback_list); sub->cached.has_data = 1; } static int weston_subsurface_is_synchronized(struct weston_subsurface *sub) { while (sub) { if (sub->synchronized) return 1; if (!sub->parent) return 0; sub = weston_surface_to_subsurface(sub->parent); } return 0; } static void weston_subsurface_commit(struct weston_subsurface *sub) { struct weston_surface *surface = sub->surface; struct weston_subsurface *tmp; /* Recursive check for effectively synchronized. */ if (weston_subsurface_is_synchronized(sub)) { weston_subsurface_commit_to_cache(sub); } else { if (sub->cached.has_data) { /* flush accumulated state from cache */ weston_subsurface_commit_to_cache(sub); weston_subsurface_commit_from_cache(sub); } else { weston_surface_commit(surface); } wl_list_for_each(tmp, &surface->subsurface_list, parent_link) { if (tmp->surface != surface) weston_subsurface_parent_commit(tmp, 0); } } } static void weston_subsurface_synchronized_commit(struct weston_subsurface *sub) { struct weston_surface *surface = sub->surface; struct weston_subsurface *tmp; /* From now on, commit_from_cache the whole sub-tree, regardless of * the synchronized mode of each child. This sub-surface or some * of its ancestors were synchronized, so we are synchronized * all the way down. */ if (sub->cached.has_data) weston_subsurface_commit_from_cache(sub); wl_list_for_each(tmp, &surface->subsurface_list, parent_link) { if (tmp->surface != surface) weston_subsurface_parent_commit(tmp, 1); } } static void weston_subsurface_parent_commit(struct weston_subsurface *sub, int parent_is_synchronized) { if (sub->position.set) { weston_surface_set_position(sub->surface, sub->position.x, sub->position.y); sub->position.set = 0; } if (parent_is_synchronized || sub->synchronized) weston_subsurface_synchronized_commit(sub); } static void subsurface_configure(struct weston_surface *surface, int32_t dx, int32_t dy, int32_t width, int32_t height) { struct weston_compositor *compositor = surface->compositor; weston_surface_configure(surface, surface->geometry.x + dx, surface->geometry.y + dy, width, height); /* No need to check parent mappedness, because if parent is not * mapped, parent is not in a visible layer, so this sub-surface * will not be drawn either. */ if (!weston_surface_is_mapped(surface)) { wl_list_init(&surface->layer_link); /* Cannot call weston_surface_update_transform(), * because that would call it also for the parent surface, * which might not be mapped yet. That would lead to * inconsistent state, where the window could never be * mapped. * * Instead just assing any output, to make * weston_surface_is_mapped() return true, so that when the * parent surface does get mapped, this one will get * included, too. See surface_list_add(). */ assert(!wl_list_empty(&compositor->output_list)); surface->output = container_of(compositor->output_list.next, struct weston_output, link); } } static struct weston_subsurface * weston_surface_to_subsurface(struct weston_surface *surface) { if (surface->configure == subsurface_configure) return surface->configure_private; return NULL; } WL_EXPORT struct weston_surface * weston_surface_get_main_surface(struct weston_surface *surface) { struct weston_subsurface *sub; while (surface && (sub = weston_surface_to_subsurface(surface))) surface = sub->parent; return surface; } static void subsurface_set_position(struct wl_client *client, struct wl_resource *resource, int32_t x, int32_t y) { struct weston_subsurface *sub = resource->data; if (!sub) return; sub->position.x = x; sub->position.y = y; sub->position.set = 1; } static struct weston_subsurface * subsurface_from_surface(struct weston_surface *surface) { struct weston_subsurface *sub; sub = weston_surface_to_subsurface(surface); if (sub) return sub; wl_list_for_each(sub, &surface->subsurface_list, parent_link) if (sub->surface == surface) return sub; return NULL; } static struct weston_subsurface * subsurface_sibling_check(struct weston_subsurface *sub, struct weston_surface *surface, const char *request) { struct weston_subsurface *sibling; sibling = subsurface_from_surface(surface); if (!sibling) { wl_resource_post_error(sub->resource, WL_SUBSURFACE_ERROR_BAD_SURFACE, "%s: wl_surface@%d is not a parent or sibling", request, surface->resource.object.id); return NULL; } if (sibling->parent != sub->parent) { wl_resource_post_error(sub->resource, WL_SUBSURFACE_ERROR_BAD_SURFACE, "%s: wl_surface@%d has a different parent", request, surface->resource.object.id); return NULL; } return sibling; } static void subsurface_place_above(struct wl_client *client, struct wl_resource *resource, struct wl_resource *sibling_resource) { struct weston_subsurface *sub = resource->data; struct weston_surface *surface = sibling_resource->data; struct weston_subsurface *sibling; if (!sub) return; sibling = subsurface_sibling_check(sub, surface, "place_above"); if (!sibling) return; wl_list_remove(&sub->parent_link_pending); wl_list_insert(sibling->parent_link_pending.prev, &sub->parent_link_pending); } static void subsurface_place_below(struct wl_client *client, struct wl_resource *resource, struct wl_resource *sibling_resource) { struct weston_subsurface *sub = resource->data; struct weston_surface *surface = sibling_resource->data; struct weston_subsurface *sibling; if (!sub) return; sibling = subsurface_sibling_check(sub, surface, "place_below"); if (!sibling) return; wl_list_remove(&sub->parent_link_pending); wl_list_insert(&sibling->parent_link_pending, &sub->parent_link_pending); } static void subsurface_set_sync(struct wl_client *client, struct wl_resource *resource) { struct weston_subsurface *sub = resource->data; if (sub) sub->synchronized = 1; } static void subsurface_set_desync(struct wl_client *client, struct wl_resource *resource) { struct weston_subsurface *sub = resource->data; if (sub && sub->synchronized) { sub->synchronized = 0; /* If sub became effectively desynchronized, flush. */ if (!weston_subsurface_is_synchronized(sub)) weston_subsurface_synchronized_commit(sub); } } static void weston_subsurface_cache_init(struct weston_subsurface *sub) { pixman_region32_init(&sub->cached.damage); pixman_region32_init(&sub->cached.opaque); pixman_region32_init(&sub->cached.input); wl_list_init(&sub->cached.frame_callback_list); sub->cached.buffer_ref.buffer = NULL; } static void weston_subsurface_cache_fini(struct weston_subsurface *sub) { struct weston_frame_callback *cb, *tmp; wl_list_for_each_safe(cb, tmp, &sub->cached.frame_callback_list, link) wl_resource_destroy(&cb->resource); weston_buffer_reference(&sub->cached.buffer_ref, NULL); pixman_region32_fini(&sub->cached.damage); pixman_region32_fini(&sub->cached.opaque); pixman_region32_fini(&sub->cached.input); } static void weston_subsurface_unlink_parent(struct weston_subsurface *sub) { wl_list_remove(&sub->parent_link); wl_list_remove(&sub->parent_link_pending); wl_list_remove(&sub->parent_destroy_listener.link); sub->parent = NULL; } static void weston_subsurface_destroy(struct weston_subsurface *sub); static void subsurface_handle_surface_destroy(struct wl_listener *listener, void *data) { struct weston_subsurface *sub = container_of(listener, struct weston_subsurface, surface_destroy_listener); assert(data == &sub->surface->resource); /* The protocol object (wl_resource) is left inert. */ if (sub->resource) sub->resource->data = NULL; weston_subsurface_destroy(sub); } static void subsurface_handle_parent_destroy(struct wl_listener *listener, void *data) { struct weston_subsurface *sub = container_of(listener, struct weston_subsurface, parent_destroy_listener); assert(data == &sub->parent->resource); assert(sub->surface != sub->parent); if (weston_surface_is_mapped(sub->surface)) weston_surface_unmap(sub->surface); weston_subsurface_unlink_parent(sub); } static void subsurface_resource_destroy(struct wl_resource *resource) { struct weston_subsurface *sub = resource->data; if (sub) weston_subsurface_destroy(sub); free(resource); } static void subsurface_destroy(struct wl_client *client, struct wl_resource *resource) { wl_resource_destroy(resource); } static void weston_subsurface_link_parent(struct weston_subsurface *sub, struct weston_surface *parent) { sub->parent = parent; sub->parent_destroy_listener.notify = subsurface_handle_parent_destroy; wl_signal_add(&parent->resource.destroy_signal, &sub->parent_destroy_listener); wl_list_insert(&parent->subsurface_list, &sub->parent_link); wl_list_insert(&parent->subsurface_list_pending, &sub->parent_link_pending); } static void weston_subsurface_link_surface(struct weston_subsurface *sub, struct weston_surface *surface) { sub->surface = surface; sub->surface_destroy_listener.notify = subsurface_handle_surface_destroy; wl_signal_add(&surface->resource.destroy_signal, &sub->surface_destroy_listener); } static void weston_subsurface_destroy(struct weston_subsurface *sub) { assert(sub->surface); if (sub->resource) { assert(weston_surface_to_subsurface(sub->surface) == sub); assert(sub->parent_destroy_listener.notify == subsurface_handle_parent_destroy); weston_surface_set_transform_parent(sub->surface, NULL); if (sub->parent) weston_subsurface_unlink_parent(sub); weston_subsurface_cache_fini(sub); sub->surface->configure = NULL; sub->surface->configure_private = NULL; } else { /* the dummy weston_subsurface for the parent itself */ assert(sub->parent_destroy_listener.notify == NULL); wl_list_remove(&sub->parent_link); wl_list_remove(&sub->parent_link_pending); } wl_list_remove(&sub->surface_destroy_listener.link); free(sub); } static const struct wl_subsurface_interface subsurface_implementation = { subsurface_destroy, subsurface_set_position, subsurface_place_above, subsurface_place_below, subsurface_set_sync, subsurface_set_desync }; static struct weston_subsurface * weston_subsurface_create(uint32_t id, struct weston_surface *surface, struct weston_surface *parent) { struct weston_subsurface *sub; sub = calloc(1, sizeof *sub); if (!sub) return NULL; sub->resource = wl_client_add_object(surface->resource.client, &wl_subsurface_interface, &subsurface_implementation, id, sub); if (!sub->resource) { free(sub); return NULL; } sub->resource->destroy = subsurface_resource_destroy; weston_subsurface_link_surface(sub, surface); weston_subsurface_link_parent(sub, parent); weston_subsurface_cache_init(sub); sub->synchronized = 1; weston_surface_set_transform_parent(surface, parent); return sub; } /* Create a dummy subsurface for having the parent itself in its * sub-surface lists. Makes stacking order manipulation easy. */ static struct weston_subsurface * weston_subsurface_create_for_parent(struct weston_surface *parent) { struct weston_subsurface *sub; sub = calloc(1, sizeof *sub); if (!sub) return NULL; weston_subsurface_link_surface(sub, parent); sub->parent = parent; wl_list_insert(&parent->subsurface_list, &sub->parent_link); wl_list_insert(&parent->subsurface_list_pending, &sub->parent_link_pending); return sub; } static void subcompositor_get_subsurface(struct wl_client *client, struct wl_resource *resource, uint32_t id, struct wl_resource *surface_resource, struct wl_resource *parent_resource) { struct weston_surface *surface = surface_resource->data; struct weston_surface *parent = parent_resource->data; struct weston_subsurface *sub; static const char where[] = "get_subsurface: wl_subsurface@"; if (surface == parent) { wl_resource_post_error(resource, WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE, "%s%d: wl_surface@%d cannot be its own parent", where, id, surface_resource->object.id); return; } if (weston_surface_to_subsurface(surface)) { wl_resource_post_error(resource, WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE, "%s%d: wl_surface@%d is already a sub-surface", where, id, surface_resource->object.id); return; } if (surface->configure) { wl_resource_post_error(resource, WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE, "%s%d: wl_surface@%d already has a role", where, id, surface_resource->object.id); return; } if (weston_surface_get_main_surface(parent) == surface) { wl_resource_post_error(resource, WL_SUBCOMPOSITOR_ERROR_BAD_SURFACE, "%s%d: wl_surface@%d is an ancestor of parent", where, id, surface_resource->object.id); return; } /* make sure the parent is in its own list */ if (wl_list_empty(&parent->subsurface_list)) { if (!weston_subsurface_create_for_parent(parent)) { wl_resource_post_no_memory(resource); return; } } sub = weston_subsurface_create(id, surface, parent); if (!sub) { wl_resource_post_no_memory(resource); return; } surface->configure = subsurface_configure; surface->configure_private = sub; } static void subcompositor_destroy(struct wl_client *client, struct wl_resource *resource) { wl_resource_destroy(resource); } static const struct wl_subcompositor_interface subcompositor_interface = { subcompositor_destroy, subcompositor_get_subsurface }; static void bind_subcompositor(struct wl_client *client, void *data, uint32_t version, uint32_t id) { struct weston_compositor *compositor = data; wl_client_add_object(client, &wl_subcompositor_interface, &subcompositor_interface, id, compositor); } static void weston_compositor_dpms(struct weston_compositor *compositor, enum dpms_enum state) { struct weston_output *output; wl_list_for_each(output, &compositor->output_list, link) if (output->set_dpms) output->set_dpms(output, state); } WL_EXPORT void weston_compositor_wake(struct weston_compositor *compositor) { switch (compositor->state) { case WESTON_COMPOSITOR_SLEEPING: weston_compositor_dpms(compositor, WESTON_DPMS_ON); /* fall through */ case WESTON_COMPOSITOR_IDLE: case WESTON_COMPOSITOR_OFFSCREEN: wl_signal_emit(&compositor->wake_signal, compositor); /* fall through */ default: compositor->state = WESTON_COMPOSITOR_ACTIVE; wl_event_source_timer_update(compositor->idle_source, compositor->idle_time * 1000); } } WL_EXPORT void weston_compositor_offscreen(struct weston_compositor *compositor) { switch (compositor->state) { case WESTON_COMPOSITOR_OFFSCREEN: return; case WESTON_COMPOSITOR_SLEEPING: weston_compositor_dpms(compositor, WESTON_DPMS_ON); /* fall through */ default: compositor->state = WESTON_COMPOSITOR_OFFSCREEN; wl_event_source_timer_update(compositor->idle_source, 0); } } WL_EXPORT void weston_compositor_sleep(struct weston_compositor *compositor) { if (compositor->state == WESTON_COMPOSITOR_SLEEPING) return; wl_event_source_timer_update(compositor->idle_source, 0); compositor->state = WESTON_COMPOSITOR_SLEEPING; weston_compositor_dpms(compositor, WESTON_DPMS_OFF); } static int idle_handler(void *data) { struct weston_compositor *compositor = data; if (compositor->idle_inhibit) return 1; compositor->state = WESTON_COMPOSITOR_IDLE; wl_signal_emit(&compositor->idle_signal, compositor); return 1; } WL_EXPORT void weston_plane_init(struct weston_plane *plane, int32_t x, int32_t y) { pixman_region32_init(&plane->damage); pixman_region32_init(&plane->clip); plane->x = x; plane->y = y; } WL_EXPORT void weston_plane_release(struct weston_plane *plane) { pixman_region32_fini(&plane->damage); pixman_region32_fini(&plane->clip); } WL_EXPORT void weston_compositor_stack_plane(struct weston_compositor *ec, struct weston_plane *plane, struct weston_plane *above) { if (above) wl_list_insert(above->link.prev, &plane->link); else wl_list_insert(&ec->plane_list, &plane->link); } static void unbind_resource(struct wl_resource *resource) { wl_list_remove(&resource->link); free(resource); } static void bind_output(struct wl_client *client, void *data, uint32_t version, uint32_t id) { struct weston_output *output = data; struct weston_mode *mode; struct wl_resource *resource; resource = wl_client_add_object(client, &wl_output_interface, NULL, id, data); wl_list_insert(&output->resource_list, &resource->link); resource->destroy = unbind_resource; wl_output_send_geometry(resource, output->x, output->y, output->mm_width, output->mm_height, output->subpixel, output->make, output->model, output->transform); wl_list_for_each (mode, &output->mode_list, link) { wl_output_send_mode(resource, mode->flags, mode->width, mode->height, mode->refresh); } } WL_EXPORT void weston_output_destroy(struct weston_output *output) { struct weston_compositor *c = output->compositor; wl_signal_emit(&output->destroy_signal, output); free(output->name); pixman_region32_fini(&output->region); pixman_region32_fini(&output->previous_damage); output->compositor->output_id_pool &= ~(1 << output->id); wl_display_remove_global(c->wl_display, output->global); } static void weston_output_compute_transform(struct weston_output *output) { struct weston_matrix transform; int flip; weston_matrix_init(&transform); transform.type = WESTON_MATRIX_TRANSFORM_ROTATE; switch(output->transform) { case WL_OUTPUT_TRANSFORM_FLIPPED: case WL_OUTPUT_TRANSFORM_FLIPPED_90: case WL_OUTPUT_TRANSFORM_FLIPPED_180: case WL_OUTPUT_TRANSFORM_FLIPPED_270: transform.type |= WESTON_MATRIX_TRANSFORM_OTHER; flip = -1; break; default: flip = 1; break; } switch(output->transform) { case WL_OUTPUT_TRANSFORM_NORMAL: case WL_OUTPUT_TRANSFORM_FLIPPED: transform.d[0] = flip; transform.d[1] = 0; transform.d[4] = 0; transform.d[5] = 1; break; case WL_OUTPUT_TRANSFORM_90: case WL_OUTPUT_TRANSFORM_FLIPPED_90: transform.d[0] = 0; transform.d[1] = -flip; transform.d[4] = 1; transform.d[5] = 0; break; case WL_OUTPUT_TRANSFORM_180: case WL_OUTPUT_TRANSFORM_FLIPPED_180: transform.d[0] = -flip; transform.d[1] = 0; transform.d[4] = 0; transform.d[5] = -1; break; case WL_OUTPUT_TRANSFORM_270: case WL_OUTPUT_TRANSFORM_FLIPPED_270: transform.d[0] = 0; transform.d[1] = flip; transform.d[4] = -1; transform.d[5] = 0; break; default: break; } weston_matrix_multiply(&output->matrix, &transform); } WL_EXPORT void weston_output_update_matrix(struct weston_output *output) { float magnification; struct weston_matrix camera; struct weston_matrix modelview; weston_matrix_init(&output->matrix); weston_matrix_translate(&output->matrix, -(output->x + (output->border.right + output->width - output->border.left) / 2.0), -(output->y + (output->border.bottom + output->height - output->border.top) / 2.0), 0); weston_matrix_scale(&output->matrix, 2.0 / (output->width + output->border.left + output->border.right), -2.0 / (output->height + output->border.top + output->border.bottom), 1); weston_output_compute_transform(output); if (output->zoom.active) { magnification = 1 / (1 - output->zoom.spring_z.current); weston_matrix_init(&camera); weston_matrix_init(&modelview); weston_output_update_zoom(output, output->zoom.type); weston_matrix_translate(&camera, output->zoom.trans_x, -output->zoom.trans_y, 0); weston_matrix_invert(&modelview, &camera); weston_matrix_scale(&modelview, magnification, magnification, 1.0); weston_matrix_multiply(&output->matrix, &modelview); } output->dirty = 0; } static void weston_output_transform_init(struct weston_output *output, uint32_t transform) { output->transform = transform; switch (transform) { case WL_OUTPUT_TRANSFORM_90: case WL_OUTPUT_TRANSFORM_270: case WL_OUTPUT_TRANSFORM_FLIPPED_90: case WL_OUTPUT_TRANSFORM_FLIPPED_270: /* Swap width and height */ output->width = output->current->height; output->height = output->current->width; break; case WL_OUTPUT_TRANSFORM_NORMAL: case WL_OUTPUT_TRANSFORM_180: case WL_OUTPUT_TRANSFORM_FLIPPED: case WL_OUTPUT_TRANSFORM_FLIPPED_180: output->width = output->current->width; output->height = output->current->height; break; default: break; } } WL_EXPORT void weston_output_move(struct weston_output *output, int x, int y) { output->x = x; output->y = y; pixman_region32_init(&output->previous_damage); pixman_region32_init_rect(&output->region, x, y, output->width, output->height); } WL_EXPORT void weston_output_init(struct weston_output *output, struct weston_compositor *c, int x, int y, int width, int height, uint32_t transform) { output->compositor = c; output->x = x; output->y = y; output->border.top = 0; output->border.bottom = 0; output->border.left = 0; output->border.right = 0; output->mm_width = width; output->mm_height = height; output->dirty = 1; weston_output_transform_init(output, transform); weston_output_init_zoom(output); weston_output_move(output, x, y); weston_output_damage(output); wl_signal_init(&output->frame_signal); wl_signal_init(&output->destroy_signal); wl_list_init(&output->animation_list); wl_list_init(&output->resource_list); output->id = ffs(~output->compositor->output_id_pool) - 1; output->compositor->output_id_pool |= 1 << output->id; output->global = wl_display_add_global(c->wl_display, &wl_output_interface, output, bind_output); wl_signal_emit(&c->output_created_signal, output); } static void compositor_bind(struct wl_client *client, void *data, uint32_t version, uint32_t id) { struct weston_compositor *compositor = data; wl_client_add_object(client, &wl_compositor_interface, &compositor_interface, id, compositor); } static void log_uname(void) { struct utsname usys; uname(&usys); weston_log("OS: %s, %s, %s, %s\n", usys.sysname, usys.release, usys.version, usys.machine); } WL_EXPORT int weston_environment_get_fd(const char *env) { char *e, *end; int fd, flags; e = getenv(env); if (!e) return -1; fd = strtol(e, &end, 0); if (*end != '\0') return -1; flags = fcntl(fd, F_GETFD); if (flags == -1) return -1; fcntl(fd, F_SETFD, flags | FD_CLOEXEC); unsetenv(env); return fd; } WL_EXPORT int weston_compositor_init(struct weston_compositor *ec, struct wl_display *display, int *argc, char *argv[], int config_fd) { struct wl_event_loop *loop; struct xkb_rule_names xkb_names; const struct config_key keyboard_config_keys[] = { { "keymap_rules", CONFIG_KEY_STRING, &xkb_names.rules }, { "keymap_model", CONFIG_KEY_STRING, &xkb_names.model }, { "keymap_layout", CONFIG_KEY_STRING, &xkb_names.layout }, { "keymap_variant", CONFIG_KEY_STRING, &xkb_names.variant }, { "keymap_options", CONFIG_KEY_STRING, &xkb_names.options }, }; const struct config_section cs[] = { { "keyboard", keyboard_config_keys, ARRAY_LENGTH(keyboard_config_keys) }, }; memset(&xkb_names, 0, sizeof(xkb_names)); ec->config_fd = config_fd; parse_config_file(config_fd, cs, ARRAY_LENGTH(cs), ec); ec->wl_display = display; wl_signal_init(&ec->destroy_signal); wl_signal_init(&ec->activate_signal); wl_signal_init(&ec->kill_signal); wl_signal_init(&ec->idle_signal); wl_signal_init(&ec->wake_signal); wl_signal_init(&ec->show_input_panel_signal); wl_signal_init(&ec->hide_input_panel_signal); wl_signal_init(&ec->update_input_panel_signal); wl_signal_init(&ec->seat_created_signal); wl_signal_init(&ec->output_created_signal); ec->launcher_sock = weston_environment_get_fd("WESTON_LAUNCHER_SOCK"); ec->output_id_pool = 0; if (!wl_display_add_global(display, &wl_compositor_interface, ec, compositor_bind)) return -1; if (!wl_display_add_global(display, &wl_subcompositor_interface, ec, bind_subcompositor)) return -1; wl_list_init(&ec->surface_list); wl_list_init(&ec->plane_list); wl_list_init(&ec->layer_list); wl_list_init(&ec->seat_list); wl_list_init(&ec->output_list); wl_list_init(&ec->key_binding_list); wl_list_init(&ec->button_binding_list); wl_list_init(&ec->axis_binding_list); wl_list_init(&ec->debug_binding_list); weston_plane_init(&ec->primary_plane, 0, 0); weston_compositor_stack_plane(ec, &ec->primary_plane, NULL); if (weston_compositor_xkb_init(ec, &xkb_names) < 0) return -1; ec->ping_handler = NULL; screenshooter_create(ec); text_cursor_position_notifier_create(ec); text_backend_init(ec); wl_data_device_manager_init(ec->wl_display); wl_display_init_shm(display); loop = wl_display_get_event_loop(ec->wl_display); ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec); wl_event_source_timer_update(ec->idle_source, ec->idle_time * 1000); ec->input_loop = wl_event_loop_create(); weston_layer_init(&ec->fade_layer, &ec->layer_list); weston_layer_init(&ec->cursor_layer, &ec->fade_layer.link); weston_compositor_schedule_repaint(ec); return 0; } WL_EXPORT void weston_compositor_shutdown(struct weston_compositor *ec) { struct weston_output *output, *next; wl_event_source_remove(ec->idle_source); if (ec->input_loop_source) wl_event_source_remove(ec->input_loop_source); /* Destroy all outputs associated with this compositor */ wl_list_for_each_safe(output, next, &ec->output_list, link) output->destroy(output); weston_binding_list_destroy_all(&ec->key_binding_list); weston_binding_list_destroy_all(&ec->button_binding_list); weston_binding_list_destroy_all(&ec->axis_binding_list); weston_binding_list_destroy_all(&ec->debug_binding_list); weston_plane_release(&ec->primary_plane); wl_event_loop_destroy(ec->input_loop); close(ec->config_fd); } WL_EXPORT void weston_version(int *major, int *minor, int *micro) { *major = WESTON_VERSION_MAJOR; *minor = WESTON_VERSION_MINOR; *micro = WESTON_VERSION_MICRO; } static int on_term_signal(int signal_number, void *data) { struct wl_display *display = data; weston_log("caught signal %d\n", signal_number); wl_display_terminate(display); return 1; } #ifdef HAVE_LIBUNWIND static void print_backtrace(void) { unw_cursor_t cursor; unw_context_t context; unw_word_t off; unw_proc_info_t pip; int ret, i = 0; char procname[256]; const char *filename; Dl_info dlinfo; pip.unwind_info = NULL; ret = unw_getcontext(&context); if (ret) { weston_log("unw_getcontext: %d\n", ret); return; } ret = unw_init_local(&cursor, &context); if (ret) { weston_log("unw_init_local: %d\n", ret); return; } ret = unw_step(&cursor); while (ret > 0) { ret = unw_get_proc_info(&cursor, &pip); if (ret) { weston_log("unw_get_proc_info: %d\n", ret); break; } ret = unw_get_proc_name(&cursor, procname, 256, &off); if (ret && ret != -UNW_ENOMEM) { if (ret != -UNW_EUNSPEC) weston_log("unw_get_proc_name: %d\n", ret); procname[0] = '?'; procname[1] = 0; } if (dladdr((void *)(pip.start_ip + off), &dlinfo) && dlinfo.dli_fname && *dlinfo.dli_fname) filename = dlinfo.dli_fname; else filename = "?"; weston_log("%u: %s (%s%s+0x%x) [%p]\n", i++, filename, procname, ret == -UNW_ENOMEM ? "..." : "", (int)off, (void *)(pip.start_ip + off)); ret = unw_step(&cursor); if (ret < 0) weston_log("unw_step: %d\n", ret); } } #else static void print_backtrace(void) { void *buffer[32]; int i, count; Dl_info info; count = backtrace(buffer, ARRAY_LENGTH(buffer)); for (i = 0; i < count; i++) { dladdr(buffer[i], &info); weston_log(" [%016lx] %s (%s)\n", (long) buffer[i], info.dli_sname ? info.dli_sname : "--", info.dli_fname); } } #endif static void on_caught_signal(int s, siginfo_t *siginfo, void *context) { /* This signal handler will do a best-effort backtrace, and * then call the backend restore function, which will switch * back to the vt we launched from or ungrab X etc and then * raise SIGTRAP. If we run weston under gdb from X or a * different vt, and tell gdb "handle *s* nostop", this * will allow weston to switch back to gdb on crash and then * gdb will catch the crash with SIGTRAP.*/ weston_log("caught signal: %d\n", s); print_backtrace(); segv_compositor->restore(segv_compositor); raise(SIGTRAP); } static void * load_module(const char *name, const char *entrypoint) { char path[PATH_MAX]; void *module, *init; if (name[0] != '/') snprintf(path, sizeof path, "%s/%s", MODULEDIR, name); else snprintf(path, sizeof path, "%s", name); module = dlopen(path, RTLD_NOW | RTLD_NOLOAD); if (module) { weston_log("Module '%s' already loaded\n", path); dlclose(module); return NULL; } weston_log("Loading module '%s'\n", path); module = dlopen(path, RTLD_NOW); if (!module) { weston_log("Failed to load module: %s\n", dlerror()); return NULL; } init = dlsym(module, entrypoint); if (!init) { weston_log("Failed to lookup init function: %s\n", dlerror()); dlclose(module); return NULL; } return init; } static int load_modules(struct weston_compositor *ec, const char *modules, int *argc, char *argv[]) { const char *p, *end; char buffer[256]; int (*module_init)(struct weston_compositor *ec, int *argc, char *argv[]); if (modules == NULL) return 0; p = modules; while (*p) { end = strchrnul(p, ','); snprintf(buffer, sizeof buffer, "%.*s", (int) (end - p), p); module_init = load_module(buffer, "module_init"); if (module_init) module_init(ec, argc, argv); p = end; while (*p == ',') p++; } return 0; } static const char xdg_error_message[] = "fatal: environment variable XDG_RUNTIME_DIR is not set.\n"; static const char xdg_wrong_message[] = "fatal: environment variable XDG_RUNTIME_DIR\n" "is set to \"%s\", which is not a directory.\n"; static const char xdg_wrong_mode_message[] = "warning: XDG_RUNTIME_DIR \"%s\" is not configured\n" "correctly. Unix access mode must be 0700 but is %o,\n" "and XDG_RUNTIME_DIR must be owned by the user, but is\n" "owned by UID %d.\n"; static const char xdg_detail_message[] = "Refer to your distribution on how to get it, or\n" "http://www.freedesktop.org/wiki/Specifications/basedir-spec\n" "on how to implement it.\n"; static void verify_xdg_runtime_dir(void) { char *dir = getenv("XDG_RUNTIME_DIR"); struct stat s; if (!dir) { weston_log(xdg_error_message); weston_log_continue(xdg_detail_message); exit(EXIT_FAILURE); } if (stat(dir, &s) || !S_ISDIR(s.st_mode)) { weston_log(xdg_wrong_message, dir); weston_log_continue(xdg_detail_message); exit(EXIT_FAILURE); } if ((s.st_mode & 0777) != 0700 || s.st_uid != getuid()) { weston_log(xdg_wrong_mode_message, dir, s.st_mode & 0777, s.st_uid); weston_log_continue(xdg_detail_message); } } static int usage(int error_code) { fprintf(stderr, "Usage: weston [OPTIONS]\n\n" "This is weston version " VERSION ", the Wayland reference compositor.\n" "Weston supports multiple backends, and depending on which backend is in use\n" "different options will be accepted.\n\n" "Core options:\n\n" " --version\t\tPrint weston version\n" " -B, --backend=MODULE\tBackend module, one of drm-backend.so,\n" "\t\t\t\tfbdev-backend.so, x11-backend.so or\n" "\t\t\t\twayland-backend.so\n" " -S, --socket=NAME\tName of socket to listen on\n" " -i, --idle-time=SECS\tIdle time in seconds\n" " --modules\t\tLoad the comma-separated list of modules\n" " --log==FILE\t\tLog to the given file\n" " -h, --help\t\tThis help message\n\n"); fprintf(stderr, "Options for drm-backend.so:\n\n" " --connector=ID\tBring up only this connector\n" " --seat=SEAT\t\tThe seat that weston should run on\n" " --tty=TTY\t\tThe tty to use\n" " --use-pixman\t\tUse the pixman (CPU) renderer\n" " --current-mode\tPrefer current KMS mode over EDID preferred mode\n\n"); fprintf(stderr, "Options for fbdev-backend.so:\n\n" " --tty=TTY\t\tThe tty to use\n" " --device=DEVICE\tThe framebuffer device to use\n\n"); fprintf(stderr, "Options for x11-backend.so:\n\n" " --width=WIDTH\t\tWidth of X window\n" " --height=HEIGHT\tHeight of X window\n" " --fullscreen\t\tRun in fullscreen mode\n" " --use-pixman\t\tUse the pixman (CPU) renderer\n" " --output-count=COUNT\tCreate multiple outputs\n" " --no-input\t\tDont create input devices\n\n"); fprintf(stderr, "Options for wayland-backend.so:\n\n" " --width=WIDTH\t\tWidth of Wayland surface\n" " --height=HEIGHT\tHeight of Wayland surface\n" " --display=DISPLAY\tWayland display to connect to\n\n"); exit(error_code); } static void catch_signals(void) { struct sigaction action; action.sa_flags = SA_SIGINFO | SA_RESETHAND; action.sa_sigaction = on_caught_signal; sigemptyset(&action.sa_mask); sigaction(SIGSEGV, &action, NULL); sigaction(SIGABRT, &action, NULL); } int main(int argc, char *argv[]) { int ret = EXIT_SUCCESS; struct wl_display *display; struct weston_compositor *ec; struct wl_event_source *signals[4]; struct wl_event_loop *loop; struct weston_compositor *(*backend_init)(struct wl_display *display, int *argc, char *argv[], int config_fd); int i, config_fd; char *backend = NULL; const char *modules = "desktop-shell.so", *option_modules = NULL; char *log = NULL; int32_t idle_time = 300; int32_t help = 0; char *socket_name = "wayland-0"; int32_t version = 0; const struct config_key core_config_keys[] = { { "modules", CONFIG_KEY_STRING, &modules }, }; const struct config_section cs[] = { { "core", core_config_keys, ARRAY_LENGTH(core_config_keys) }, }; const struct weston_option core_options[] = { { WESTON_OPTION_STRING, "backend", 'B', &backend }, { WESTON_OPTION_STRING, "socket", 'S', &socket_name }, { WESTON_OPTION_INTEGER, "idle-time", 'i', &idle_time }, { WESTON_OPTION_STRING, "modules", 0, &option_modules }, { WESTON_OPTION_STRING, "log", 0, &log }, { WESTON_OPTION_BOOLEAN, "help", 'h', &help }, { WESTON_OPTION_BOOLEAN, "version", 0, &version }, }; parse_options(core_options, ARRAY_LENGTH(core_options), &argc, argv); if (help) usage(EXIT_SUCCESS); if (version) { printf(PACKAGE_STRING "\n"); return EXIT_SUCCESS; } weston_log_file_open(log); weston_log("%s\n" STAMP_SPACE "%s\n" STAMP_SPACE "Bug reports to: %s\n" STAMP_SPACE "Build: %s\n", PACKAGE_STRING, PACKAGE_URL, PACKAGE_BUGREPORT, BUILD_ID); log_uname(); verify_xdg_runtime_dir(); display = wl_display_create(); loop = wl_display_get_event_loop(display); signals[0] = wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, display); signals[1] = wl_event_loop_add_signal(loop, SIGINT, on_term_signal, display); signals[2] = wl_event_loop_add_signal(loop, SIGQUIT, on_term_signal, display); wl_list_init(&child_process_list); signals[3] = wl_event_loop_add_signal(loop, SIGCHLD, sigchld_handler, NULL); if (!backend) { if (getenv("WAYLAND_DISPLAY")) backend = "wayland-backend.so"; else if (getenv("DISPLAY")) backend = "x11-backend.so"; else backend = WESTON_NATIVE_BACKEND; } config_fd = open_config_file("weston.ini"); parse_config_file(config_fd, cs, ARRAY_LENGTH(cs), NULL); backend_init = load_module(backend, "backend_init"); if (!backend_init) exit(EXIT_FAILURE); ec = backend_init(display, &argc, argv, config_fd); if (ec == NULL) { weston_log("fatal: failed to create compositor\n"); exit(EXIT_FAILURE); } catch_signals(); segv_compositor = ec; ec->idle_time = idle_time; setenv("WAYLAND_DISPLAY", socket_name, 1); if (load_modules(ec, modules, &argc, argv) < 0) goto out; if (load_modules(ec, option_modules, &argc, argv) < 0) goto out; for (i = 1; i < argc; i++) weston_log("fatal: unhandled option: %s\n", argv[i]); if (argc > 1) { ret = EXIT_FAILURE; goto out; } if (wl_display_add_socket(display, socket_name)) { weston_log("fatal: failed to add socket: %m\n"); ret = EXIT_FAILURE; goto out; } weston_compositor_wake(ec); wl_display_run(display); out: /* prevent further rendering while shutting down */ ec->state = WESTON_COMPOSITOR_OFFSCREEN; wl_signal_emit(&ec->destroy_signal, ec); for (i = ARRAY_LENGTH(signals); i;) wl_event_source_remove(signals[--i]); weston_compositor_xkb_destroy(ec); ec->destroy(ec); wl_display_destroy(display); weston_log_file_close(); return ret; }