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; Copyright (c) Dave Ray, 2011. All rights reserved.
; The use and distribution terms for this software are covered by the
; Eclipse Public License 1.0 (
; which can be found in the file epl-v10.html at the root of this
; distribution.
; By using this software in any fashion, you are agreeing to be bound by
; the terms of this license.
; You must not remove this notice, or any other, from this software.
(ns ^{:doc "Functions for handling fonts. Note that most core widget functions
use these implicitly through the :font option."
:author "Dave Ray"}
(:use [seesaw.util :only [constant-map resource resource-key?]])
(:import [java.awt Font]))
(def ^{:private true} style-table (constant-map Font :bold :plain :italic))
(defn- get-style-mask [v]
(if (keyword? v)
(get-style-mask [v])
(reduce bit-or 0 (map style-table v))))
(def ^{:private true} name-table (constant-map Font :monospaced :serif :sans-serif))
(declare to-font)
(defn font
"Create and return a Font.
(font name)
(font ... options ...)
Options are:
:name The name of the font. Besides string values, also possible are
any of :monospaced, :serif, :sans-serif.
:style The style. One of :bold, :plain, :italic, or a set of those values
to combine them. Default: :plain.
:size The size of the font. Default: 12.
:from A Font from which to derive the new Font.
Returns a java.awt.Font instance.
; Create a font from a font-spec (see JavaDocs)
(font \"ARIAL-ITALIC-20\")
; Create a 12 pt bold and italic monospace
(font :style #{:bold :italic} :name :monospaced)
[& args]
(if (= 1 (count args))
(let [v (first args)]
(if (resource-key? v)
(Font/decode (resource v))
(Font/decode (str v))))
(let [{:keys [style size from] :as opts} args
font-name (:name opts)
font-style (get-style-mask (or style :plain))
font-size (or size 12)
^Font from (to-font from)]
(if from
(let [^Integer derived-style (if style font-style (.getStyle from))
derived-size (if size font-size (.getSize from))]
(.deriveFont from derived-style (float derived-size)))
(Font. (get name-table font-name font-name) font-style font-size)))))
(defn default-font
"Look up a default font from the UIManager.
(default-font \"Label.font\")
Returns an instane of java.awt.Font
(.getFont (javax.swing.UIManager/getDefaults) name))
(defn to-font
(nil? f) nil
(instance? Font f) f
(map? f) (apply font (flatten (seq f)))
true (font f)))
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