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swaybar: do not retry search for tray icons

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In case a tray icon cannot be found or does not have a desirable size,
swaybar retries the search again and again, which increases load on disk
and CPU. This commit solves it by storing target_size for each icon, so
that swaybar does not search for an icon of some size if it already tried to.

Fixes #3789.
This commit is contained in:
Konstantin Pospelov 2019-06-08 18:11:32 +03:00 committed by Simon Ser
parent a5b6f40937
commit fa0abaf7cf
3 changed files with 62 additions and 52 deletions
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1
include/swaybar/tray/item.h
View file

@ -20,6 +20,7 @@ struct swaybar_sni {
cairo_surface_t *icon;
int min_size;
int max_size;
int target_size;
// dbus properties
char *watcher_id;

53
swaybar/tray/item.c
View file

@ -1,6 +1,7 @@
#define _POSIX_C_SOURCE 200809L
#include <arpa/inet.h>
#include <cairo.h>
#include <limits.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
@ -27,7 +28,7 @@ static bool sni_ready(struct swaybar_sni *sni) {
static void set_sni_dirty(struct swaybar_sni *sni) {
if (sni_ready(sni)) {
sni->min_size = sni->max_size = 0; // invalidate previous icon
sni->target_size = sni->min_size = sni->max_size = 0; // invalidate previous icon
set_bar_dirty(sni->tray->bar);
}
}
@ -401,13 +402,8 @@ static enum hotspot_event_handling icon_hotspot_callback(
return HOTSPOT_PROCESS;
}
uint32_t render_sni(cairo_t *cairo, struct swaybar_output *output, double *x,
struct swaybar_sni *sni) {
uint32_t height = output->height * output->scale;
int padding = output->bar->config->tray_padding;
int ideal_size = height - 2*padding;
if ((ideal_size < sni->min_size || ideal_size > sni->max_size) && sni_ready(sni)) {
bool icon_found = false;
static void reload_sni(struct swaybar_sni *sni, char *icon_theme,
int target_size) {
char *icon_name = sni->status[0] == 'N' ?
sni->attention_icon_name : sni->icon_name;
if (icon_name) {
@ -417,7 +413,7 @@ uint32_t render_sni(cairo_t *cairo, struct swaybar_output *output, double *x,
list_add(icon_search_paths, sni->icon_theme_path);
}
char *icon_path = find_icon(sni->tray->themes, icon_search_paths,
icon_name, ideal_size, output->bar->config->icon_theme,
icon_name, target_size, icon_theme,
&sni->min_size, &sni->max_size);
list_free(icon_search_paths);
if (!icon_path && sni->icon_theme_path) {
@ -428,42 +424,53 @@ uint32_t render_sni(cairo_t *cairo, struct swaybar_output *output, double *x,
cairo_surface_destroy(sni->icon);
sni->icon = load_background_image(icon_path);
free(icon_path);
icon_found = true;
return;
}
}
if (!icon_found) {
list_t *pixmaps = sni->status[0] == 'N' ?
sni->attention_icon_pixmap : sni->icon_pixmap;
if (pixmaps) {
int idx = -1;
unsigned smallest_error = -1; // UINT_MAX
struct swaybar_pixmap *pixmap = NULL;
int min_error = INT_MAX;
for (int i = 0; i < pixmaps->length; ++i) {
struct swaybar_pixmap *pixmap = pixmaps->items[i];
unsigned error = (ideal_size - pixmap->size) *
(ideal_size < pixmap->size ? -1 : 1);
if (error < smallest_error) {
smallest_error = error;
idx = i;
struct swaybar_pixmap *p = pixmaps->items[i];
int e = abs(target_size - pixmap->size);
if (e < min_error) {
pixmap = p;
min_error = e;
}
}
struct swaybar_pixmap *pixmap = pixmaps->items[idx];
cairo_surface_destroy(sni->icon);
sni->icon = cairo_image_surface_create_for_data(pixmap->pixels,
CAIRO_FORMAT_ARGB32, pixmap->size, pixmap->size,
cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, pixmap->size));
}
}
uint32_t render_sni(cairo_t *cairo, struct swaybar_output *output, double *x,
struct swaybar_sni *sni) {
uint32_t height = output->height * output->scale;
int padding = output->bar->config->tray_padding;
int target_size = height - 2*padding;
if (target_size != sni->target_size && sni_ready(sni)) {
// check if another icon should be loaded
if (target_size < sni->min_size || target_size > sni->max_size) {
reload_sni(sni, output->bar->config->icon_theme, target_size);
}
sni->target_size = target_size;
}
int icon_size;
cairo_surface_t *icon;
if (sni->icon) {
int actual_size = cairo_image_surface_get_height(sni->icon);
icon_size = actual_size < ideal_size ?
actual_size*(ideal_size/actual_size) : ideal_size;
icon_size = actual_size < target_size ?
actual_size*(target_size/actual_size) : target_size;
icon = cairo_image_surface_scale(sni->icon, icon_size, icon_size);
} else { // draw a :(
icon_size = ideal_size*0.8;
icon_size = target_size*0.8;
icon = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, icon_size, icon_size);
cairo_t *cairo_icon = cairo_create(icon);
cairo_set_source_u32(cairo_icon, 0xFF0000FF);

4
swaybar/tray/tray.c
View file

@ -124,7 +124,9 @@ uint32_t render_tray(cairo_t *cairo, struct swaybar_output *output, double *x) {
struct swaybar_tray *tray = output->bar->tray;
for (int i = 0; i < tray->items->length; ++i) {
uint32_t h = render_sni(cairo, output, x, tray->items->items[i]);
max_height = h > max_height ? h : max_height;
if (h > max_height) {
max_height = h;
}
}
return max_height;