wlroots-hyprland/rootston/output.c

753 lines
23 KiB
C
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#define _POSIX_C_SOURCE 200809L
#include <time.h>
#include <stdlib.h>
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#include <stdbool.h>
#include <wlr/types/wlr_output_layout.h>
#include <wlr/types/wlr_compositor.h>
#include <wlr/types/wlr_wl_shell.h>
#include <wlr/types/wlr_xdg_shell_v6.h>
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#include <wlr/render/matrix.h>
#include <wlr/util/log.h>
#include <wlr/util/region.h>
#include "rootston/server.h"
#include "rootston/output.h"
#include "rootston/config.h"
typedef void (*surface_iterator_func_t)(struct wlr_surface *surface,
double lx, double ly, float rotation, void *data);
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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;
}
}
static void surface_for_each_surface(struct wlr_surface *surface, double lx,
double ly, float rotation, surface_iterator_func_t iterator,
void *user_data) {
iterator(surface, lx, ly, rotation, user_data);
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);
surface_for_each_surface(subsurface->surface, lx + sx, ly + sy,
rotation, iterator, user_data);
}
}
static void xdg_surface_v6_for_each_surface(struct wlr_xdg_surface_v6 *surface,
double base_x, double base_y, float rotation,
surface_iterator_func_t iterator, void *user_data) {
double width = surface->surface->current->width;
double height = surface->surface->current->height;
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;
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);
surface_for_each_surface(popup->surface, base_x + popup_sx,
base_y + popup_sy, rotation, iterator, user_data);
xdg_surface_v6_for_each_surface(popup, base_x + popup_sx,
base_y + popup_sy, rotation, iterator, user_data);
}
}
static void wl_shell_surface_for_each_surface(
struct wlr_wl_shell_surface *surface, double lx, double ly,
float rotation, bool is_child, surface_iterator_func_t iterator,
void *user_data) {
if (is_child || surface->state != WLR_WL_SHELL_SURFACE_STATE_POPUP) {
surface_for_each_surface(surface->surface, lx, ly, rotation, iterator,
user_data);
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);
wl_shell_surface_for_each_surface(popup, lx + popup_x, ly + popup_y,
rotation, true, iterator, user_data);
}
}
}
static void view_for_each_surface(struct roots_view *view,
surface_iterator_func_t iterator, void *user_data) {
switch (view->type) {
case ROOTS_XDG_SHELL_V6_VIEW:
surface_for_each_surface(view->wlr_surface, view->x, view->y,
view->rotation, iterator, user_data);
xdg_surface_v6_for_each_surface(view->xdg_surface_v6, view->x, view->y,
view->rotation, iterator, user_data);
break;
case ROOTS_WL_SHELL_VIEW:
wl_shell_surface_for_each_surface(view->wl_shell_surface, view->x,
view->y, view->rotation, false, iterator, user_data);
break;
case ROOTS_XWAYLAND_VIEW:
if (view->wlr_surface != NULL) {
surface_for_each_surface(view->wlr_surface, view->x, view->y,
view->rotation, iterator, user_data);
}
break;
}
}
static void xwayland_children_for_each_surface(
struct wlr_xwayland_surface *surface,
surface_iterator_func_t iterator, void *user_data) {
struct wlr_xwayland_surface *child;
wl_list_for_each(child, &surface->children, parent_link) {
if (child->surface != NULL && child->added) {
surface_for_each_surface(child->surface, child->x, child->y, 0,
iterator, user_data);
}
xwayland_children_for_each_surface(child, iterator, user_data);
}
}
struct render_data {
struct roots_output *output;
struct timespec *when;
pixman_region32_t *damage;
};
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/**
* Checks whether a surface at (lx, ly) intersects an output. Sets `box` to 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,
double lx, double ly, float rotation, struct wlr_box *box) {
double ox = lx, oy = ly;
wlr_output_layout_output_coords(output_layout, wlr_output, &ox, &oy);
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;
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struct wlr_box layout_box = {
.x = lx, .y = ly,
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.width = surface->current->width, .height = surface->current->height,
};
wlr_box_rotated_bounds(&layout_box, -rotation, &layout_box);
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return wlr_output_layout_intersects(output_layout, wlr_output, &layout_box);
}
static void output_get_transformed_size(struct wlr_output *wlr_output,
int *width, int *height) {
if (wlr_output->transform % 2 == 0) {
*width = wlr_output->width;
*height = wlr_output->height;
} else {
*width = wlr_output->height;
*height = wlr_output->width;
}
}
static void scissor_output(struct roots_output *output, pixman_box32_t *rect) {
struct wlr_output *wlr_output = output->wlr_output;
struct wlr_box box = {
.x = rect->x1,
.y = rect->y1,
.width = rect->x2 - rect->x1,
.height = rect->y2 - rect->y1,
};
int ow, oh;
output_get_transformed_size(output->wlr_output, &ow, &oh);
// Scissor is in renderer coordinates, ie. upside down
enum wl_output_transform transform = wlr_output_transform_compose(
wlr_output_transform_invert(wlr_output->transform),
WL_OUTPUT_TRANSFORM_FLIPPED_180);
wlr_box_transform(&box, transform, ow, oh, &box);
wlr_renderer_scissor(output->desktop->server->renderer, &box);
}
static void render_surface(struct wlr_surface *surface, double lx, double ly,
float rotation, void *_data) {
struct render_data *data = _data;
struct roots_output *output = data->output;
struct timespec *when = data->when;
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if (!wlr_surface_has_buffer(surface)) {
return;
}
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struct wlr_box box;
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bool intersects = surface_intersect_output(surface, output->desktop->layout,
output->wlr_output, lx, ly, rotation, &box);
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if (!intersects) {
return;
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}
struct wlr_box rotated;
wlr_box_rotated_bounds(&box, -rotation, &rotated);
pixman_region32_t damage;
pixman_region32_init(&damage);
pixman_region32_union_rect(&damage, &damage, rotated.x, rotated.y,
rotated.width, rotated.height);
pixman_region32_intersect(&damage, &damage, data->damage);
bool damaged = pixman_region32_not_empty(&damage);
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if (!damaged) {
goto damage_finish;
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}
float matrix[16];
enum wl_output_transform transform =
wlr_output_transform_invert(surface->current->transform);
wlr_matrix_project_box(&matrix, &box, transform, rotation,
&output->wlr_output->transform_matrix);
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int nrects;
pixman_box32_t *rects = pixman_region32_rectangles(&damage, &nrects);
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for (int i = 0; i < nrects; ++i) {
scissor_output(output, &rects[i]);
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wlr_render_with_matrix(output->desktop->server->renderer,
surface->texture, &matrix);
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}
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wlr_surface_send_frame_done(surface, when);
damage_finish:
pixman_region32_fini(&damage);
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}
static void get_decoration_box(struct roots_view *view,
struct roots_output *output, struct wlr_box *box) {
struct wlr_output *wlr_output = output->wlr_output;
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struct wlr_box deco_box;
view_get_deco_box(view, &deco_box);
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double sx = deco_box.x - view->x;
double sy = deco_box.y - view->y;
rotate_child_position(&sx, &sy, deco_box.width, deco_box.height,
view->wlr_surface->current->width,
view->wlr_surface->current->height, view->rotation);
double x = sx + view->x;
double y = sy + view->y;
wlr_output_layout_output_coords(output->desktop->layout, wlr_output, &x, &y);
box->x = x * wlr_output->scale;
box->y = y * wlr_output->scale;
box->width = deco_box.width * wlr_output->scale;
box->height = deco_box.height * wlr_output->scale;
}
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static void render_decorations(struct roots_view *view,
struct render_data *data) {
if (!view->decorated || view->wlr_surface == NULL) {
return;
}
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struct roots_output *output = data->output;
struct wlr_box box;
get_decoration_box(view, output, &box);
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pixman_region32_t damage;
pixman_region32_init(&damage);
pixman_region32_union_rect(&damage, &damage, box.x, box.y,
box.width, box.height);
pixman_region32_intersect(&damage, &damage, data->damage);
bool damaged = pixman_region32_not_empty(&damage);
if (!damaged) {
goto damage_finish;
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}
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float matrix[16];
wlr_matrix_project_box(&matrix, &box, WL_OUTPUT_TRANSFORM_NORMAL,
view->rotation, &output->wlr_output->transform_matrix);
float color[] = { 0.2, 0.2, 0.2, 1 };
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int nrects;
pixman_box32_t *rects =
pixman_region32_rectangles(&damage, &nrects);
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for (int i = 0; i < nrects; ++i) {
scissor_output(output, &rects[i]);
wlr_render_colored_quad(output->desktop->server->renderer, &color,
&matrix);
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}
damage_finish:
pixman_region32_fini(&damage);
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}
static void render_view(struct roots_view *view, struct render_data *data) {
render_decorations(view, data);
view_for_each_surface(view, render_surface, data);
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}
static bool has_standalone_surface(struct roots_view *view) {
if (!wl_list_empty(&view->wlr_surface->subsurface_list)) {
return false;
}
switch (view->type) {
case ROOTS_XDG_SHELL_V6_VIEW:
return wl_list_empty(&view->xdg_surface_v6->popups);
case ROOTS_WL_SHELL_VIEW:
return wl_list_empty(&view->wl_shell_surface->popups);
case ROOTS_XWAYLAND_VIEW:
return wl_list_empty(&view->xwayland_surface->children);
}
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return true;
}
static void render_output(struct roots_output *output) {
struct wlr_output *wlr_output = output->wlr_output;
struct roots_desktop *desktop = output->desktop;
struct roots_server *server = desktop->server;
if (!wlr_output->enabled) {
return;
}
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
float clear_color[] = {0.25f, 0.25f, 0.25f};
// Check if we can delegate the fullscreen surface to the output
if (output->fullscreen_view != NULL) {
struct roots_view *view = output->fullscreen_view;
// Make sure the view is centered on screen
const struct wlr_box *output_box =
wlr_output_layout_get_box(desktop->layout, wlr_output);
struct wlr_box view_box;
view_get_box(view, &view_box);
double view_x = (double)(output_box->width - view_box.width) / 2 +
output_box->x;
double view_y = (double)(output_box->height - view_box.height) / 2 +
output_box->y;
view_move(view, view_x, view_y);
if (has_standalone_surface(view)) {
wlr_output_set_fullscreen_surface(wlr_output, view->wlr_surface);
} else {
wlr_output_set_fullscreen_surface(wlr_output, NULL);
}
// Fullscreen views are rendered on a black background
clear_color[0] = clear_color[1] = clear_color[2] = 0;
} else {
wlr_output_set_fullscreen_surface(wlr_output, NULL);
}
int buffer_age = -1;
wlr_output_make_current(wlr_output, &buffer_age);
int width, height;
output_get_transformed_size(output->wlr_output, &width, &height);
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// Check if we can use damage tracking
pixman_region32_t damage;
pixman_region32_init(&damage);
if (buffer_age <= 0 || buffer_age - 1 > ROOTS_OUTPUT_PREVIOUS_DAMAGE_LEN) {
// Buffer new or too old, damage the whole output
pixman_region32_union_rect(&damage, &damage, 0, 0, width, height);
} else {
pixman_region32_copy(&damage, &output->damage);
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// Accumulate damage from old buffers
size_t idx = output->previous_damage_idx;
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for (int i = 0; i < buffer_age - 1; ++i) {
int j = (idx + i) % ROOTS_OUTPUT_PREVIOUS_DAMAGE_LEN;
pixman_region32_union(&damage, &damage, &output->previous_damage[j]);
}
}
pixman_region32_intersect_rect(&damage, &damage, 0, 0, width, height);
if (!pixman_region32_not_empty(&damage) && !wlr_output->needs_swap) {
// Output doesn't need swap and isn't damaged, skip rendering completely
goto damage_finish;
}
struct render_data data = {
.output = output,
.when = &now,
.damage = &damage,
};
wlr_renderer_begin(server->renderer, wlr_output);
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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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int nrects;
pixman_box32_t *rects = pixman_region32_rectangles(&damage, &nrects);
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for (int i = 0; i < nrects; ++i) {
scissor_output(output, &rects[i]);
wlr_renderer_clear(output->desktop->server->renderer,
clear_color[0], clear_color[1], clear_color[2], 1);
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}
// If a view is fullscreen on this output, render it
if (output->fullscreen_view != NULL) {
struct roots_view *view = output->fullscreen_view;
if (wlr_output->fullscreen_surface == view->wlr_surface) {
// The output will render the fullscreen view
goto renderer_end;
}
view_for_each_surface(view, render_surface, &data);
// During normal rendering the xwayland window tree isn't traversed
// because all windows are rendered. Here we only want to render
// the fullscreen window's children so we have to traverse the tree.
if (view->type == ROOTS_XWAYLAND_VIEW) {
xwayland_children_for_each_surface(view->xwayland_surface,
render_surface, &data);
}
goto renderer_end;
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}
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// Render all views
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struct roots_view *view;
wl_list_for_each_reverse(view, &desktop->views, link) {
render_view(view, &data);
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}
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// Render drag icons
struct roots_drag_icon *drag_icon = NULL;
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struct roots_seat *seat = NULL;
wl_list_for_each(seat, &server->input->seats, link) {
wl_list_for_each(drag_icon, &seat->drag_icons, link) {
if (!drag_icon->wlr_drag_icon->mapped) {
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continue;
}
render_surface(drag_icon->wlr_drag_icon->surface,
drag_icon->x, drag_icon->y, 0, &data);
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}
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}
renderer_end:
wlr_renderer_scissor(output->desktop->server->renderer, NULL);
wlr_renderer_end(server->renderer);
wlr_output_swap_buffers(wlr_output, &now, &damage);
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// same as decrementing, but works on unsigned integers
output->previous_damage_idx += ROOTS_OUTPUT_PREVIOUS_DAMAGE_LEN - 1;
output->previous_damage_idx %= ROOTS_OUTPUT_PREVIOUS_DAMAGE_LEN;
pixman_region32_copy(&output->previous_damage[output->previous_damage_idx],
&output->damage);
pixman_region32_clear(&output->damage);
output->last_frame = desktop->last_frame = now;
damage_finish:
pixman_region32_fini(&damage);
}
static void output_handle_frame(struct wl_listener *listener, void *data) {
struct roots_output *output = wl_container_of(listener, output, frame);
render_output(output);
}
static void output_damage_whole(struct roots_output *output) {
int width, height;
output_get_transformed_size(output->wlr_output, &width, &height);
pixman_region32_union_rect(&output->damage, &output->damage, 0, 0,
width, height);
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wlr_output_schedule_frame(output->wlr_output);
}
static bool view_accept_damage(struct roots_output *output,
struct roots_view *view) {
if (output->fullscreen_view == NULL) {
return true;
}
if (output->fullscreen_view == view) {
return true;
}
if (output->fullscreen_view->type == ROOTS_XWAYLAND_VIEW &&
view->type == ROOTS_XWAYLAND_VIEW) {
// Special case: accept damage from children
struct wlr_xwayland_surface *xsurface = view->xwayland_surface;
while (xsurface != NULL) {
if (output->fullscreen_view->xwayland_surface == xsurface) {
return true;
}
xsurface = xsurface->parent;
}
}
return false;
}
static void damage_whole_surface(struct wlr_surface *surface,
double lx, double ly, float rotation, void *data) {
struct roots_output *output = data;
if (!wlr_surface_has_buffer(surface)) {
return;
}
struct wlr_box box;
bool intersects = surface_intersect_output(surface, output->desktop->layout,
output->wlr_output, lx, ly, rotation, &box);
if (!intersects) {
return;
}
wlr_box_rotated_bounds(&box, -rotation, &box);
pixman_region32_union_rect(&output->damage, &output->damage,
box.x, box.y, box.width, box.height);
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wlr_output_schedule_frame(output->wlr_output);
}
static void damage_whole_decoration(struct roots_view *view,
struct roots_output *output) {
if (!view->decorated || view->wlr_surface == NULL) {
return;
}
struct wlr_box box;
get_decoration_box(view, output, &box);
wlr_box_rotated_bounds(&box, -view->rotation, &box);
pixman_region32_union_rect(&output->damage, &output->damage,
box.x, box.y, box.width, box.height);
}
void output_damage_whole_view(struct roots_output *output,
struct roots_view *view) {
if (!view_accept_damage(output, view)) {
return;
}
damage_whole_decoration(view, output);
view_for_each_surface(view, damage_whole_surface, output);
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}
void output_damage_whole_drag_icon(struct roots_output *output,
struct roots_drag_icon *icon) {
surface_for_each_surface(icon->wlr_drag_icon->surface, icon->x, icon->y, 0,
damage_whole_surface, output);
}
static void damage_from_surface(struct wlr_surface *surface,
double lx, double ly, float rotation, void *data) {
struct roots_output *output = data;
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if (!wlr_surface_has_buffer(surface)) {
return;
}
struct wlr_box box;
bool intersects = surface_intersect_output(surface, output->desktop->layout,
output->wlr_output, lx, ly, rotation, &box);
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if (!intersects) {
return;
}
pixman_region32_t damage;
pixman_region32_init(&damage);
pixman_region32_copy(&damage, &surface->current->surface_damage);
wlr_region_scale(&damage, &damage, output->wlr_output->scale);
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pixman_region32_translate(&damage, box.x, box.y);
pixman_region32_union(&output->damage, &output->damage, &damage);
pixman_region32_fini(&damage);
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wlr_output_schedule_frame(output->wlr_output);
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}
void output_damage_from_view(struct roots_output *output,
struct roots_view *view) {
if (!view_accept_damage(output, view)) {
return;
}
if (view->rotation != 0) {
output_damage_whole_view(output, view);
return;
}
view_for_each_surface(view, damage_from_surface, output);
}
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static void output_handle_mode(struct wl_listener *listener, void *data) {
struct roots_output *output = wl_container_of(listener, output, mode);
output_damage_whole(output);
}
static void output_handle_needs_swap(struct wl_listener *listener, void *data) {
struct roots_output *output =
wl_container_of(listener, output, needs_swap);
pixman_region32_union(&output->damage, &output->damage,
&output->wlr_output->damage);
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wlr_output_schedule_frame(output->wlr_output);
}
static void set_mode(struct wlr_output *output,
struct roots_output_config *oc) {
int mhz = (int)(oc->mode.refresh_rate * 1000);
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if (wl_list_empty(&output->modes)) {
// Output has no mode, try setting a custom one
wlr_output_set_custom_mode(output, oc->mode.width, oc->mode.height, mhz);
return;
}
struct wlr_output_mode *mode, *best = NULL;
wl_list_for_each(mode, &output->modes, link) {
if (mode->width == oc->mode.width && mode->height == oc->mode.height) {
if (mode->refresh == mhz) {
best = mode;
break;
}
best = mode;
}
}
if (!best) {
wlr_log(L_ERROR, "Configured mode for %s not available", output->name);
} else {
wlr_log(L_DEBUG, "Assigning configured mode to %s", output->name);
wlr_output_set_mode(output, best);
}
}
void output_add_notify(struct wl_listener *listener, void *data) {
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struct roots_desktop *desktop = wl_container_of(listener, desktop,
output_add);
struct wlr_output *wlr_output = data;
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struct roots_input *input = desktop->server->input;
struct roots_config *config = desktop->config;
wlr_log(L_DEBUG, "Output '%s' added", wlr_output->name);
wlr_log(L_DEBUG, "'%s %s %s' %"PRId32"mm x %"PRId32"mm", wlr_output->make,
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wlr_output->model, wlr_output->serial, wlr_output->phys_width,
wlr_output->phys_height);
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if (wl_list_length(&wlr_output->modes) > 0) {
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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);
}
struct roots_output *output = calloc(1, sizeof(struct roots_output));
clock_gettime(CLOCK_MONOTONIC, &output->last_frame);
output->desktop = desktop;
output->wlr_output = wlr_output;
wl_list_insert(&desktop->outputs, &output->link);
pixman_region32_init(&output->damage);
for (size_t i = 0; i < ROOTS_OUTPUT_PREVIOUS_DAMAGE_LEN; ++i) {
pixman_region32_init(&output->previous_damage[i]);
}
output->frame.notify = output_handle_frame;
wl_signal_add(&wlr_output->events.frame, &output->frame);
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output->mode.notify = output_handle_mode;
wl_signal_add(&wlr_output->events.mode, &output->mode);
output->needs_swap.notify = output_handle_needs_swap;
wl_signal_add(&wlr_output->events.needs_swap, &output->needs_swap);
struct roots_output_config *output_config =
roots_config_get_output(config, wlr_output);
if (output_config) {
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if (output_config->enable) {
if (output_config->mode.width) {
set_mode(wlr_output, output_config);
}
wlr_output_set_scale(wlr_output, output_config->scale);
wlr_output_set_transform(wlr_output, output_config->transform);
wlr_output_layout_add(desktop->layout, wlr_output, output_config->x,
output_config->y);
} else {
wlr_output_enable(wlr_output, false);
}
} else {
wlr_output_layout_add_auto(desktop->layout, wlr_output);
}
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struct roots_seat *seat;
wl_list_for_each(seat, &input->seats, link) {
roots_seat_configure_cursor(seat);
roots_seat_configure_xcursor(seat);
}
output_damage_whole(output);
}
void output_remove_notify(struct wl_listener *listener, void *data) {
struct wlr_output *wlr_output = data;
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struct roots_desktop *desktop =
wl_container_of(listener, desktop, output_remove);
struct roots_output *output = NULL, *_output;
wl_list_for_each(_output, &desktop->outputs, link) {
if (_output->wlr_output == wlr_output) {
output = _output;
break;
}
}
if (!output) {
return; // We are unfamiliar with this output
}
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wlr_output_layout_remove(desktop->layout, output->wlr_output);
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// TODO: cursor
//example_config_configure_cursor(sample->config, sample->cursor,
// sample->compositor);
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pixman_region32_fini(&output->damage);
for (size_t i = 0; i < ROOTS_OUTPUT_PREVIOUS_DAMAGE_LEN; ++i) {
pixman_region32_fini(&output->previous_damage[i]);
}
wl_list_remove(&output->link);
wl_list_remove(&output->frame.link);
wl_list_remove(&output->mode.link);
wl_list_remove(&output->needs_swap.link);
free(output);
}