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6113f9b94e
Introduce a new icon particle. It follows the icon spec (https://specifications.freedesktop.org/icon-theme-spec/latest/index.html). Rendering logic is taken from fuzzel (using nanosvg + libpng), while loading logic is taken from sway. Standard usage is with `use-tag = false` which expands the provided string template and then loads the string as the icon name. There are settings to manually override the base paths, themes, etc. The second usage which is required for tray support is a special icon tag that transfers raw pixmaps. With `use-tag = true` it first expands the string, and then uses that output to find an icon pixmap tag. To reduce memory usage, themes are reference counted so they can be passed down the configuration stack without having to load them in multiple times. For programmability, a fallback particle can be specified if no icon/tag is found `fallback: ...`. And the new icon pixmap tag can be existence checked in map conditions using `+{tag_name}`. Future work to be done in follow up diffs: 1. Icon caching. Currently performs an icon lookup on each instantiation & a render on each refresh. 2. Theme caching. Changing theme directories results in a new "theme collection" being created resulting in the possibility of duplicated theme loading.
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
#pragma once
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#include <pixman.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include "icon.h"
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enum tag_type {
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TAG_TYPE_BOOL,
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TAG_TYPE_INT,
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TAG_TYPE_FLOAT,
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TAG_TYPE_STRING,
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};
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enum tag_realtime_unit {
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TAG_REALTIME_NONE,
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TAG_REALTIME_SECS,
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TAG_REALTIME_MSECS,
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};
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struct module;
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struct tag {
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void *private;
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struct module *owner;
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void (*destroy)(struct tag *tag);
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const char *(*name)(const struct tag *tag);
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enum tag_type (*type)(const struct tag *tag);
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const char *(*as_string)(const struct tag *tag);
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long (*as_int)(const struct tag *tag);
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bool (*as_bool)(const struct tag *tag);
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double (*as_float)(const struct tag *tag);
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long (*min)(const struct tag *tag);
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long (*max)(const struct tag *tag);
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enum tag_realtime_unit (*realtime)(const struct tag *tag);
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bool (*refresh_in)(const struct tag *tag, long units);
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};
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struct icon_tag {
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void *private;
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struct module *owner;
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void (*destroy)(struct icon_tag *destroy);
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const char *(*name)(const struct icon_tag *tag);
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struct icon_pixmaps *(*pixmaps)(const struct icon_tag *tag);
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};
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struct tag_set {
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struct tag **tags;
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struct icon_tag **icon_tags;
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size_t count;
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size_t icon_count;
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};
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struct tag *tag_new_int(struct module *owner, const char *name, long value);
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struct tag *tag_new_int_range(struct module *owner, const char *name, long value, long min, long max);
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struct tag *tag_new_int_realtime(struct module *owner, const char *name, long value, long min, long max,
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enum tag_realtime_unit unit);
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struct tag *tag_new_bool(struct module *owner, const char *name, bool value);
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struct tag *tag_new_float(struct module *owner, const char *name, double value);
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struct tag *tag_new_string(struct module *owner, const char *name, const char *value);
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struct icon_tag *icon_tag_new_pixmap(struct module *owner, const char *name, struct icon_pixmaps *icon_pixmap);
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const struct tag *tag_for_name(const struct tag_set *set, const char *name);
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const struct icon_tag *icon_tag_for_name(const struct tag_set *set, const char *name);
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void tag_set_destroy(struct tag_set *set);
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/* Utility functions */
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char *tags_expand_template(const char *template, const struct tag_set *tags);
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void tags_expand_templates(char *expanded[], const char *template[], size_t nmemb, const struct tag_set *tags);
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