143 lines
3.3 KiB
Elixir
143 lines
3.3 KiB
Elixir
defmodule Heroicons.Generator do
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@moduledoc false
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defmacro __using__(icon_dir: icon_dir) do
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icon_paths =
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Path.absname(icon_dir, :code.priv_dir(:heroicons))
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|> Path.join("*.svg")
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|> Path.wildcard()
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require Phoenix.Component
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recompile_quoted =
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quote do
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@paths_hash :erlang.md5(unquote(icon_paths))
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def __mix_recompile__?() do
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icon_paths =
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Path.absname(unquote(icon_dir), :code.priv_dir(:heroicons))
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|> Path.join("*.svg")
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|> Path.wildcard()
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:erlang.md5(icon_paths) != @paths_hash
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end
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end
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icons_quoted =
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for path <- icon_paths do
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generate(path)
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end
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[recompile_quoted | icons_quoted]
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end
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@doc false
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def generate(absolute_path) do
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path = Path.relative_to(absolute_path, :code.priv_dir(:heroicons))
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name = Heroicons.Generator.name(path)
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quote do
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@external_resource unquote(absolute_path)
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@doc Heroicons.Generator.doc(unquote(name), unquote(path))
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def unquote(name)(assigns_or_opts \\ [])
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def unquote(name)(assigns) when is_map(assigns) do
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Heroicons.Generator.icon_component(unquote(path), assigns)
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end
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def unquote(name)(opts) when is_list(opts) do
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Heroicons.Generator.icon_function(unquote(path), opts)
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end
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end
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end
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@doc false
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def name(path) do
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Path.basename(path, ".svg")
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|> String.replace("-", "_")
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|> String.to_atom()
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end
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@doc false
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def doc(name, path) do
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"""
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 {: width=24px}
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## Examples
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Use as a `Phoenix.Component`
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<.#{name} />
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<.#{name} class="w-6 h-6 text-gray-500" />
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or as a function
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<%= #{name}() %>
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<%= #{name}(class: "w-6 h-6 text-gray-500") %>
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"""
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end
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if function_exported?(Phoenix.Component, :assigns_to_attributes, 2) do
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@assign_mod Phoenix.Component
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@assigns_to_attrs_mod Phoenix.Component
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else
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@assign_mod Phoenix.LiveView
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@assigns_to_attrs_mod Phoenix.LiveView.Helpers
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end
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@doc false
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def icon_component(path, assigns) when is_map(assigns) do
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attrs = @assigns_to_attrs_mod.assigns_to_attributes(assigns)
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assigns = @assign_mod.assign(assigns, :attrs, attrs)
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dynamic = fn track_changes? ->
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changed =
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case assigns do
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%{__changed__: changed} when track_changes? -> changed
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_ -> nil
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end
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attrs =
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case Phoenix.LiveView.Engine.changed_assign?(changed, :attrs) do
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true -> elem(Phoenix.HTML.attributes_escape(assigns.attrs), 1)
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false -> nil
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end
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[attrs]
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end
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{icon_body, fingerprint} = Heroicons.Cache.fetch_icon(path)
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%Phoenix.LiveView.Rendered{
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static: [
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"<svg",
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icon_body
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],
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dynamic: dynamic,
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fingerprint: fingerprint,
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root: true
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}
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end
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@doc false
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def icon_function(path, opts) when is_list(opts) do
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attrs =
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for {k, v} <- opts do
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safe_k =
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k |> Atom.to_string() |> String.replace("_", "-") |> Phoenix.HTML.Safe.to_iodata()
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safe_v = v |> Phoenix.HTML.Safe.to_iodata()
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{:safe, [?\s, safe_k, ?=, ?", safe_v, ?"]}
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end
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{icon_body, _fingerprint} = Heroicons.Cache.fetch_icon(path)
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{:safe,
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[
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"<svg",
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Phoenix.HTML.Safe.to_iodata(attrs),
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icon_body
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]}
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end
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end
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