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swaybar: synchronize rendering to output frames

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This commit is contained in:
Ian Fan 2018-09-28 16:17:15 +01:00
parent 4eb3fe4830
commit 02dfeea54c
4 changed files with 48 additions and 23 deletions
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2
include/swaybar/bar.h
View file

@ -83,6 +83,8 @@ struct swaybar_output {
enum wl_output_subpixel subpixel;
struct pool_buffer buffers[2];
struct pool_buffer *current_buffer;
bool dirty;
bool frame_scheduled;
};
struct swaybar_workspace {

4
include/swaybar/render.h
View file

@ -1,10 +1,8 @@
#ifndef _SWAYBAR_RENDER_H
#define _SWAYBAR_RENDER_H
struct swaybar;
struct swaybar_output;
struct swaybar_config;
void render_frame(struct swaybar *bar, struct swaybar_output *output);
void render_frame(struct swaybar_output *output);
#endif

41
swaybar/bar.c
View file

@ -72,6 +72,16 @@ static void swaybar_output_free(struct swaybar_output *output) {
free(output);
}
static void set_output_dirty(struct swaybar_output *output) {
if (output->frame_scheduled) {
output->dirty = true;
return;
}
if (output->surface) {
render_frame(output);
}
}
static void layer_surface_configure(void *data,
struct zwlr_layer_surface_v1 *surface,
uint32_t serial, uint32_t width, uint32_t height) {
@ -79,7 +89,7 @@ static void layer_surface_configure(void *data,
output->width = width;
output->height = height;
zwlr_layer_surface_v1_ack_configure(surface, serial);
render_frame(output->bar, output);
set_output_dirty(output);
}
static void layer_surface_closed(void *_output,
@ -325,27 +335,22 @@ static void output_geometry(void *data, struct wl_output *wl_output, int32_t x,
const char *make, const char *model, int32_t transform) {
struct swaybar_output *output = data;
output->subpixel = subpixel;
if (output->surface) {
render_frame(output->bar, output);
}
}
static void output_mode(void *data, struct wl_output *output, uint32_t flags,
static void output_mode(void *data, struct wl_output *wl_output, uint32_t flags,
int32_t width, int32_t height, int32_t refresh) {
// Who cares
}
static void output_done(void *data, struct wl_output *output) {
// Who cares
static void output_done(void *data, struct wl_output *wl_output) {
struct swaybar_output *output = data;
set_output_dirty(output);
}
static void output_scale(void *data, struct wl_output *wl_output,
int32_t factor) {
struct swaybar_output *output = data;
output->scale = factor;
if (output->surface) {
render_frame(output->bar, output);
}
}
struct wl_output_listener output_listener = {
@ -381,7 +386,7 @@ static void xdg_output_handle_done(void *data,
wl_list_insert(&bar->outputs, &output->link);
add_layer_surface(output);
render_frame(bar, output);
set_output_dirty(output);
}
}
@ -470,12 +475,10 @@ static const struct wl_registry_listener registry_listener = {
.global_remove = handle_global_remove,
};
static void render_all_frames(struct swaybar *bar) {
static void set_bar_dirty(struct swaybar *bar) {
struct swaybar_output *output;
wl_list_for_each(output, &bar->outputs, link) {
if (output->surface != NULL) {
render_frame(bar, output);
}
set_output_dirty(output);
}
}
@ -528,7 +531,7 @@ bool bar_setup(struct swaybar *bar,
assert(pointer->cursor_surface);
ipc_get_workspaces(bar);
render_all_frames(bar);
set_bar_dirty(bar);
return true;
}
@ -543,7 +546,7 @@ static void display_in(int fd, short mask, void *data) {
static void ipc_in(int fd, short mask, void *data) {
struct swaybar *bar = data;
if (handle_ipc_readable(bar)) {
render_all_frames(bar);
set_bar_dirty(bar);
}
}
@ -551,10 +554,10 @@ static void status_in(int fd, short mask, void *data) {
struct swaybar *bar = data;
if (mask & (POLLHUP | POLLERR)) {
status_error(bar->status, "[error reading from status command]");
render_all_frames(bar);
set_bar_dirty(bar);
remove_event(fd);
} else if (status_handle_readable(bar->status)) {
render_all_frames(bar);
set_bar_dirty(bar);
}
}

24
swaybar/render.c
View file

@ -473,7 +473,22 @@ static uint32_t render_to_cairo(cairo_t *cairo, struct swaybar_output *output) {
return max_height > output->height ? max_height : output->height;
}
void render_frame(struct swaybar *bar, struct swaybar_output *output) {
static void output_frame_handle_done(void *data, struct wl_callback *callback,
uint32_t time) {
wl_callback_destroy(callback);
struct swaybar_output *output = data;
output->frame_scheduled = false;
if (output->dirty) {
render_frame(output);
output->dirty = false;
}
}
static const struct wl_callback_listener output_frame_listener = {
.done = output_frame_handle_done
};
void render_frame(struct swaybar_output *output) {
assert(output->surface != NULL);
struct swaybar_hotspot *hotspot, *tmp;
@ -518,6 +533,8 @@ void render_frame(struct swaybar *bar, struct swaybar_output *output) {
output->width * output->scale,
output->height * output->scale);
if (!output->current_buffer) {
cairo_surface_destroy(recorder);
cairo_destroy(cairo);
return;
}
cairo_t *shm = output->current_buffer->cairo;
@ -535,6 +552,11 @@ void render_frame(struct swaybar *bar, struct swaybar_output *output) {
output->current_buffer->buffer, 0, 0);
wl_surface_damage(output->surface, 0, 0,
output->width, output->height);
struct wl_callback *frame_callback = wl_surface_frame(output->surface);
wl_callback_add_listener(frame_callback, &output_frame_listener, output);
output->frame_scheduled = true;
wl_surface_commit(output->surface);
}
cairo_surface_destroy(recorder);