swayfx/sway/desktop/output.c

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C
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#define _POSIX_C_SOURCE 200809L
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#include <assert.h>
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#include <stdlib.h>
#include <time.h>
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#include <strings.h>
#include <wayland-server.h>
#include <wlr/render/wlr_renderer.h>
#include <wlr/types/wlr_box.h>
#include <wlr/types/wlr_matrix.h>
#include <wlr/types/wlr_output_damage.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_output.h>
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#include <wlr/types/wlr_surface.h>
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#include <wlr/types/wlr_wl_shell.h>
#include "log.h"
#include "sway/input/input-manager.h"
#include "sway/input/seat.h"
#include "sway/layers.h"
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#include "sway/output.h"
#include "sway/server.h"
#include "sway/tree/container.h"
#include "sway/tree/layout.h"
#include "sway/tree/view.h"
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struct sway_container *output_by_name(const char *name) {
for (int i = 0; i < root_container.children->length; ++i) {
struct sway_container *output = root_container.children->items[i];
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if (strcasecmp(output->name, name) == 0) {
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return output;
}
}
return NULL;
}
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/**
* Rotate a child's position relative to a parent. The parent size is (pw, ph),
* the child position is (*sx, *sy) and its size is (sw, sh).
*/
static void rotate_child_position(double *sx, double *sy, double sw, double sh,
double pw, double ph, float rotation) {
if (rotation != 0.0) {
// Coordinates relative to the center of the subsurface
double ox = *sx - pw/2 + sw/2,
oy = *sy - ph/2 + sh/2;
// Rotated coordinates
double rx = cos(-rotation)*ox - sin(-rotation)*oy,
ry = cos(-rotation)*oy + sin(-rotation)*ox;
*sx = rx + pw/2 - sw/2;
*sy = ry + ph/2 - sh/2;
}
}
/**
* Checks whether a surface at (lx, ly) intersects an output. If `box` is not
* NULL, it populates it with the surface box in the output, in output-local
* coordinates.
*/
static bool surface_intersect_output(struct wlr_surface *surface,
struct wlr_output_layout *output_layout, struct wlr_output *wlr_output,
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double ox, double oy, float rotation, struct wlr_box *box) {
if (box != NULL) {
box->x = ox * wlr_output->scale;
box->y = oy * wlr_output->scale;
box->width = surface->current->width * wlr_output->scale;
box->height = surface->current->height * wlr_output->scale;
}
struct wlr_box layout_box = {
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.x = wlr_output->lx + ox, .y = wlr_output->ly + oy,
.width = surface->current->width, .height = surface->current->height,
};
wlr_box_rotated_bounds(&layout_box, rotation, &layout_box);
return wlr_output_layout_intersects(output_layout, wlr_output, &layout_box);
}
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static void render_surface(struct wlr_surface *surface,
struct wlr_output *wlr_output, struct timespec *when,
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double ox, double oy, float rotation, float alpha) {
struct wlr_renderer *renderer =
wlr_backend_get_renderer(wlr_output->backend);
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if (!wlr_surface_has_buffer(surface)) {
return;
}
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struct wlr_output_layout *layout = root_container.sway_root->output_layout;
struct wlr_box box;
bool intersects = surface_intersect_output(surface, layout, wlr_output,
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ox, oy, rotation, &box);
if (intersects) {
float matrix[9];
enum wl_output_transform transform =
wlr_output_transform_invert(surface->current->transform);
wlr_matrix_project_box(matrix, &box, transform, rotation,
wlr_output->transform_matrix);
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wlr_render_texture_with_matrix(renderer, surface->texture,
matrix, alpha);
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wlr_surface_send_frame_done(surface, when);
}
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struct wlr_subsurface *subsurface;
wl_list_for_each(subsurface, &surface->subsurface_list, parent_link) {
struct wlr_surface_state *state = subsurface->surface->current;
double sx = state->subsurface_position.x;
double sy = state->subsurface_position.y;
rotate_child_position(&sx, &sy, state->width, state->height,
surface->current->width, surface->current->height, rotation);
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render_surface(subsurface->surface, wlr_output, when,
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ox + sx, oy + sy, rotation, alpha);
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}
}
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static void render_xdg_v6_popups(struct wlr_xdg_surface_v6 *surface,
struct wlr_output *wlr_output, struct timespec *when, double base_x,
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double base_y, float rotation, float alpha) {
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double width = surface->surface->current->width;
double height = surface->surface->current->height;
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struct wlr_xdg_popup_v6 *popup_state;
wl_list_for_each(popup_state, &surface->popups, link) {
struct wlr_xdg_surface_v6 *popup = popup_state->base;
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if (!popup->configured) {
continue;
}
double popup_width = popup->surface->current->width;
double popup_height = popup->surface->current->height;
double popup_sx, popup_sy;
wlr_xdg_surface_v6_popup_get_position(popup, &popup_sx, &popup_sy);
rotate_child_position(&popup_sx, &popup_sy, popup_width, popup_height,
width, height, rotation);
render_surface(popup->surface, wlr_output, when,
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base_x + popup_sx, base_y + popup_sy, rotation, alpha);
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render_xdg_v6_popups(popup, wlr_output, when,
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base_x + popup_sx, base_y + popup_sy, rotation, alpha);
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}
}
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static void render_wl_shell_surface(struct wlr_wl_shell_surface *surface,
struct wlr_output *wlr_output, struct timespec *when,
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double lx, double ly, float rotation, float alpha,
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bool is_child) {
if (is_child || surface->state != WLR_WL_SHELL_SURFACE_STATE_POPUP) {
render_surface(surface->surface, wlr_output, when,
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lx, ly, rotation, alpha);
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double width = surface->surface->current->width;
double height = surface->surface->current->height;
struct wlr_wl_shell_surface *popup;
wl_list_for_each(popup, &surface->popups, popup_link) {
double popup_width = popup->surface->current->width;
double popup_height = popup->surface->current->height;
double popup_x = popup->transient_state->x;
double popup_y = popup->transient_state->y;
rotate_child_position(&popup_x, &popup_y, popup_width, popup_height,
width, height, rotation);
render_wl_shell_surface(popup, wlr_output, when,
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lx + popup_x, ly + popup_y, rotation, alpha, true);
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}
}
}
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struct render_data {
struct sway_output *output;
struct timespec *when;
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};
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static void render_view(struct sway_container *view, void *data) {
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struct render_data *rdata = data;
struct sway_output *output = rdata->output;
struct timespec *when = rdata->when;
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struct wlr_output *wlr_output = output->wlr_output;
struct sway_view *sway_view = view->sway_view;
struct wlr_surface *surface = sway_view->surface;
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float alpha = sway_view->swayc->alpha;
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if (!surface) {
return;
}
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switch (sway_view->type) {
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case SWAY_VIEW_XDG_SHELL_V6: {
int window_offset_x = view->sway_view->wlr_xdg_surface_v6->geometry.x;
int window_offset_y = view->sway_view->wlr_xdg_surface_v6->geometry.y;
render_surface(surface, wlr_output, when,
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view->x - window_offset_x, view->y - window_offset_y, 0, alpha);
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render_xdg_v6_popups(sway_view->wlr_xdg_surface_v6, wlr_output,
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when, view->x - window_offset_x, view->y - window_offset_y, 0, alpha);
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break;
}
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case SWAY_VIEW_WL_SHELL:
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render_wl_shell_surface(sway_view->wlr_wl_shell_surface, wlr_output,
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when, view->x, view->y, 0, alpha, false);
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break;
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case SWAY_VIEW_XWAYLAND:
render_surface(surface, wlr_output, when, view->x, view->y, 0, alpha);
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break;
}
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}
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static void render_layer(struct sway_output *output, struct timespec *when,
struct wl_list *layer) {
struct sway_layer_surface *sway_layer;
wl_list_for_each(sway_layer, layer, link) {
struct wlr_layer_surface *layer = sway_layer->layer_surface;
render_surface(layer->surface, output->wlr_output, when,
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sway_layer->geo.x, sway_layer->geo.y, 0, 1.0f);
wlr_surface_send_frame_done(layer->surface, when);
}
}
static void render_output(struct sway_output *output, struct timespec *when,
pixman_region32_t *damage) {
struct wlr_output *wlr_output = output->wlr_output;
struct wlr_renderer *renderer =
wlr_backend_get_renderer(wlr_output->backend);
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wlr_renderer_begin(renderer, wlr_output->width, wlr_output->height);
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if (!pixman_region32_not_empty(damage)) {
// Output isn't damaged but needs buffer swap
goto renderer_end;
}
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// TODO: don't damage the whole output here
int width, height;
wlr_output_transformed_resolution(wlr_output, &width, &height);
pixman_region32_union_rect(damage, damage, 0, 0, width, height);
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float clear_color[] = {0.25f, 0.25f, 0.25f, 1.0f};
wlr_renderer_clear(renderer, clear_color);
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struct wlr_output_layout *output_layout =
root_container.sway_root->output_layout;
const struct wlr_box *output_box =
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wlr_output_layout_get_box(output_layout, wlr_output);
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render_layer(output, when,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND]);
render_layer(output, when,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_BOTTOM]);
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struct sway_seat *seat = input_manager_current_seat(input_manager);
struct sway_container *focus =
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seat_get_focus_inactive(seat, output->swayc);
if (!focus) {
// We've never been to this output before
focus = output->swayc->children->items[0];
}
struct sway_container *workspace = focus->type == C_WORKSPACE ?
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focus : container_parent(focus, C_WORKSPACE);
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struct render_data rdata = {
.output = output,
.when = when,
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};
container_descendants(workspace, C_VIEW, render_view, &rdata);
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// render unmanaged views on top
struct wl_list *unmanaged = &root_container.sway_root->xwayland_unmanaged;
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struct sway_xwayland_unmanaged *unmanaged_surface;
wl_list_for_each(unmanaged_surface, unmanaged, link) {
struct wlr_xwayland_surface *xsurface =
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unmanaged_surface->wlr_xwayland_surface;
const struct wlr_box view_box = {
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.x = unmanaged_surface->lx,
.y = unmanaged_surface->ly,
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.width = xsurface->width,
.height = xsurface->height,
};
struct wlr_box intersection;
if (!wlr_box_intersection(&view_box, output_box, &intersection)) {
continue;
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}
render_surface(xsurface->surface, wlr_output, &output->last_frame,
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view_box.x - output_box->x, view_box.y - output_box->y, 0, 1.0f);
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}
// TODO: Consider revising this when fullscreen windows are supported
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render_layer(output, when,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_TOP]);
render_layer(output, when,
&output->layers[ZWLR_LAYER_SHELL_V1_LAYER_OVERLAY]);
renderer_end:
wlr_renderer_end(renderer);
if (!wlr_output_damage_swap_buffers(output->damage, when, damage)) {
return;
}
output->last_frame = *when;
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}
static void damage_handle_frame(struct wl_listener *listener, void *data) {
struct sway_output *output =
wl_container_of(listener, output, damage_frame);
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if (!output->wlr_output->enabled) {
return;
}
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
bool needs_swap;
pixman_region32_t damage;
pixman_region32_init(&damage);
if (!wlr_output_damage_make_current(output->damage, &needs_swap, &damage)) {
return;
}
if (needs_swap) {
render_output(output, &now, &damage);
}
pixman_region32_fini(&damage);
// TODO: send frame done events here instead of inside render_surface
}
void output_damage_whole(struct sway_output *output) {
wlr_output_damage_add_whole(output->damage);
}
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void output_damage_whole_surface(struct sway_output *output,
double ox, double oy, struct wlr_surface *surface) {
// TODO
output_damage_whole(output);
}
void output_damage_whole_view(struct sway_output *output,
struct sway_view *view) {
// TODO
output_damage_whole(output);
}
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void output_damage_whole_container(struct sway_output *output,
struct sway_container *con) {
// TODO
output_damage_whole(output);
}
static void damage_handle_destroy(struct wl_listener *listener, void *data) {
struct sway_output *output =
wl_container_of(listener, output, damage_destroy);
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container_destroy(output->swayc);
}
static void handle_destroy(struct wl_listener *listener, void *data) {
struct sway_output *output = wl_container_of(listener, output, destroy);
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container_destroy(output->swayc);
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}
static void handle_mode(struct wl_listener *listener, void *data) {
struct sway_output *output = wl_container_of(listener, output, mode);
arrange_layers(output);
arrange_windows(output->swayc, -1, -1);
}
static void handle_transform(struct wl_listener *listener, void *data) {
struct sway_output *output = wl_container_of(listener, output, transform);
arrange_layers(output);
arrange_windows(output->swayc, -1, -1);
}
static void handle_scale(struct wl_listener *listener, void *data) {
struct sway_output *output = wl_container_of(listener, output, scale);
arrange_layers(output);
arrange_windows(output->swayc, -1, -1);
}
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void handle_new_output(struct wl_listener *listener, void *data) {
struct sway_server *server = wl_container_of(listener, server, new_output);
struct wlr_output *wlr_output = data;
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wlr_log(L_DEBUG, "New output %p: %s", wlr_output, wlr_output->name);
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struct sway_output *output = calloc(1, sizeof(struct sway_output));
if (!output) {
return;
}
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output->wlr_output = wlr_output;
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wlr_output->data = output;
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output->server = server;
if (!wl_list_empty(&wlr_output->modes)) {
struct wlr_output_mode *mode =
wl_container_of(wlr_output->modes.prev, mode, link);
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wlr_output_set_mode(wlr_output, mode);
}
output->damage = wlr_output_damage_create(wlr_output);
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output->swayc = output_create(output);
if (!output->swayc) {
free(output);
return;
}
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size_t len = sizeof(output->layers) / sizeof(output->layers[0]);
for (size_t i = 0; i < len; ++i) {
wl_list_init(&output->layers[i]);
}
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input_manager_configure_xcursor(input_manager);
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wl_signal_add(&wlr_output->events.destroy, &output->destroy);
output->destroy.notify = handle_destroy;
wl_signal_add(&wlr_output->events.mode, &output->mode);
output->mode.notify = handle_mode;
wl_signal_add(&wlr_output->events.transform, &output->transform);
output->transform.notify = handle_transform;
wl_signal_add(&wlr_output->events.scale, &output->scale);
output->scale.notify = handle_scale;
wl_signal_add(&output->damage->events.frame, &output->damage_frame);
output->damage_frame.notify = damage_handle_frame;
wl_signal_add(&output->damage->events.destroy, &output->damage_destroy);
output->damage_destroy.notify = damage_handle_destroy;
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arrange_layers(output);
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arrange_windows(&root_container, -1, -1);
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}