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#define _POSIX_C_SOURCE 200809L
#include <assert.h>
#include <stdlib.h>
#include <time.h>
#include <wayland-server.h>
#include <wlr/types/wlr_output.h>
#include <wlr/types/wlr_surface.h>
#include <wlr/render.h>
#include <wlr/render/matrix.h>
#include "log.h"
#include "sway/container.h"
#include "sway/layout.h"
#include "sway/output.h"
#include "sway/server.h"
#include "sway/view.h"
#include "sway/input/input-manager.h"
#include "sway/input/seat.h"
/**
* 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;
}
}
static void render_surface(struct wlr_surface *surface,
struct wlr_output *wlr_output, struct timespec *when,
double lx, double ly, float rotation) {
if (!wlr_surface_has_buffer(surface)) {
return;
}
struct wlr_output_layout *layout = root_container.sway_root->output_layout;
int width = surface->current->width;
int height = surface->current->height;
int render_width = width * wlr_output->scale;
int render_height = height * wlr_output->scale;
double ox = lx, oy = ly;
wlr_output_layout_output_coords(layout, wlr_output, &ox, &oy);
ox *= wlr_output->scale;
oy *= wlr_output->scale;
struct wlr_box render_box = {
.x = lx, .y = ly,
.width = render_width, .height = render_height,
};
if (wlr_output_layout_intersects(layout, wlr_output, &render_box)) {
float matrix[16];
float translate_center[16];
wlr_matrix_translate(&translate_center,
(int)ox + render_width / 2, (int)oy + render_height / 2, 0);
float rotate[16];
wlr_matrix_rotate(&rotate, rotation);
float translate_origin[16];
wlr_matrix_translate(&translate_origin, -render_width / 2,
-render_height / 2, 0);
float scale[16];
wlr_matrix_scale(&scale, render_width, render_height, 1);
float transform[16];
wlr_matrix_mul(&translate_center, &rotate, &transform);
wlr_matrix_mul(&transform, &translate_origin, &transform);
wlr_matrix_mul(&transform, &scale, &transform);
if (surface->current->transform != WL_OUTPUT_TRANSFORM_NORMAL) {
float surface_translate_center[16];
wlr_matrix_translate(&surface_translate_center, 0.5, 0.5, 0);
float surface_transform[16];
wlr_matrix_transform(surface_transform,
wlr_output_transform_invert(surface->current->transform));
float surface_translate_origin[16];
wlr_matrix_translate(&surface_translate_origin, -0.5, -0.5, 0);
wlr_matrix_mul(&transform, &surface_translate_center,
&transform);
wlr_matrix_mul(&transform, &surface_transform, &transform);
wlr_matrix_mul(&transform, &surface_translate_origin,
&transform);
}
wlr_matrix_mul(&wlr_output->transform_matrix, &transform, &matrix);
wlr_render_with_matrix(server.renderer, surface->texture,
&matrix);
wlr_surface_send_frame_done(surface, when);
}
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;
double sw = state->buffer_width / state->scale;
double sh = state->buffer_height / state->scale;
rotate_child_position(&sx, &sy, sw, sh, width, height, rotation);
render_surface(subsurface->surface, wlr_output, when,
lx + sx,
ly + sy,
rotation);
}
}
static void output_frame_view(swayc_t *view, void *data) {
struct sway_output *output = data;
struct wlr_output *wlr_output = output->wlr_output;
struct sway_view *sway_view = view->sway_view;
struct wlr_surface *surface = sway_view->surface;
switch (sway_view->type) {
case SWAY_XDG_SHELL_V6_VIEW: {
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, &output->last_frame,
view->x - window_offset_x,
view->y - window_offset_y,
0);
break;
}
case SWAY_WL_SHELL_VIEW:
break;
case SWAY_XWAYLAND_VIEW:
break;
case SWAY_VIEW_TYPES:
break;
}
}
static void output_frame_notify(struct wl_listener *listener, void *data) {
struct sway_output *soutput = wl_container_of(listener, soutput, frame);
struct wlr_output *wlr_output = data;
struct sway_server *server = soutput->server;
wlr_output_make_current(wlr_output);
wlr_renderer_begin(server->renderer, wlr_output);
swayc_descendants_of_type(
&root_container, C_VIEW, output_frame_view, soutput);
wlr_renderer_end(server->renderer);
wlr_output_swap_buffers(wlr_output);
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
soutput->last_frame = now;
}
void output_add_notify(struct wl_listener *listener, void *data) {
struct sway_server *server = wl_container_of(listener, server, output_add);
struct wlr_output *wlr_output = data;
wlr_log(L_DEBUG, "New output %p: %s", wlr_output, wlr_output->name);
struct sway_output *output = calloc(1, sizeof(struct sway_output));
if (!output) {
return;
}
output->wlr_output = wlr_output;
output->server = server;
if (!wl_list_empty(&wlr_output->modes)) {
struct wlr_output_mode *mode =
wl_container_of(wlr_output->modes.prev, mode, link);
wlr_output_set_mode(wlr_output, mode);
}
output->swayc = new_output(output);
if (!output->swayc) {
free(output);
return;
}
sway_input_manager_configure_xcursor(input_manager);
output->frame.notify = output_frame_notify;
wl_signal_add(&wlr_output->events.frame, &output->frame);
}
void output_remove_notify(struct wl_listener *listener, void *data) {
struct sway_server *server = wl_container_of(listener, server, output_remove);
struct wlr_output *wlr_output = data;
wlr_log(L_DEBUG, "Output %p %s removed", wlr_output, wlr_output->name);
swayc_t *output_container = NULL;
for (int i = 0 ; i < root_container.children->length; ++i) {
swayc_t *child = root_container.children->items[i];
if (child->type == C_OUTPUT &&
child->sway_output->wlr_output == wlr_output) {
output_container = child;
break;
}
}
if (!output_container) {
return;
}
destroy_output(output_container);
}
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