1 (in-package #:phos/ui)
2 
3 (defparameter *title-1-font* "serif 22"
4   "Font for the level 1 title.")
5 
6 (defparameter *title-2-font* "serif 19"
7   "Font for the level 2 title.")
8 
9 (defparameter *title-3-font* "serif 16"
10   "Font for the level 3 title.")
11 
12 (defparameter *verbatim-font* "monospace 12"
13   "Font for the verbatim element.")
14 
15 (defparameter *item-font* "serif 12"
16   "Font for the item.")
17 
18 (defparameter *link-font* "serif 12"
19   "Font for the links.")
20 
21 (defparameter *paragraph-font* "serif 12"
22   "Font for the normal text")
23 
24 (defparameter *url-bar* nil)
25 (defparameter *window-content* nil)
26 
27 (defparameter *current-url* nil)
28 
29 (defun join-paths (url path query)
30   (setf (quri:uri-query url) query)
31   (if (uiop:string-prefix-p "/" path)
32       (setf (quri:uri-path url) path)
33       (let ((p (quri:uri-path url)))
34         (setf (quri:uri-path url)
35               (format nil "~a~a"
36                       (if (uiop:string-suffix-p "/" p)
37                           p
38                           (directory-namestring p))
39                       path))))
40   url)
41 
42 (defun navigate-to (uri)
43   (let ((hostname (quri:uri-host uri))
44         (path (quri:uri-path uri))
45         (query (quri:uri-query uri)))
46     (if hostname
47         (do-render uri)
48         (do-render (join-paths (quri:copy-uri *current-url*)
49                                path
50                                query)))))
51 
52 (defgeneric render (obj frame)
53   (:documentation "Render OBJ in the nodgui FRAME"))
54 
55 (defmethod render ((l list) f)
56   (dolist (el l)
57     (render el f)))
58 
59 (defmethod render ((title gemtext:title) f)
60   (with-slots ((text  phos/gemtext:text)
61                (level phos/gemtext:level))
62       title
63     (let ((w (make-instance 'label
64                             :master f
65                             :font (case level
66                                     (1 *title-1-font*)
67                                     (2 *title-2-font*)
68                                     (3 *title-3-font*))
69                             :text (format nil "~v{~A~:*~} ~a" level '("#") text))))
70       (pack w :side :top :fill :both :expand t))))
71 
72 (defmethod render ((link gemtext:link) f)
73   (with-slots ((text phos/gemtext:text)
74                (url phos/gemtext:url))
75       link
76     (let ((w (make-instance 'button
77                             :master f
78                             ;; :font *link-font*
79                             :text (format nil "~a" (or text url))
80                             :command (lambda ()
81                                        (navigate-to url)))))
82       (pack w :side :top :fill :both :expand t))))
83 
84 (defmethod render ((item gemtext:item) f)
85   (with-slots ((text phos/gemtext:text)) item
86     (let ((w (make-instance 'label
87                             :master f
88                             :font *item-font*
89                             :text (format nil "* ~a" text))))
90       (pack w :side :top :fill :both :expand t))))
91 
92 (defmethod render ((par gemtext:paragraph) f)
93   (with-slots ((text phos/gemtext:text)) par
94     (let ((w (make-instance 'message
95                             :master f
96                             :font *paragraph-font*
97                             :justify "left"
98                             :text text
99                             :width 600)))
100       ;; (setf (text w) text)
101       ;; (configure w :state "disabled")
102       (pack w :side :top :expand t :anchor "w"))))
103 
104 (defmethod render ((v gemtext:verbatim) f)
105   (with-slots ((text phos/gemtext:text)
106                (alt phos/gemtext:alt))
107       v
108     (let ((w (make-instance 'label
109                             :master f
110                             :font *verbatim-font*
111                             :text text)))
112       (pack w :side :top :fill :both :expand t)
113       (when alt
114         (pack (make-instance 'label
115                              :master f
116                              :text alt)
117               :side :top
118               :fill :both
119               :expand t)))))
120 
121 (defun clear-window ()
122   (pack-forget-all *window-content*))
123 
124 (defun do-render (url)
125   (let* ((uri (quri:uri url)))
126     (setf *current-url* uri)
127     (setf (text *url-bar*) url)
128     (clear-window)
129     (render (gemtext:parse-string "# loading...")
130             *window-content*)
131     (multiple-value-bind (status body) (gemini:request url)
132       (declare (ignore status))
133       (clear-window)
134       (render (gemtext:parse-string body)
135               *window-content*))))
136 
137 (defun navigate-button-cb ()
138   (navigate-to (quri:uri (string-trim '(#\newline #\space) (text *url-bar*)))))
139 
140 (defun main (url)
141   (with-nodgui (:title "phos")
142     (set-geometry *tk* 800 600 0 0)
143     (let* ((nav      (make-instance 'frame))
144            (back-btn (make-instance 'button :text "←"   :master nav))
145            (forw-btn (make-instance 'button :text "→"   :master nav))
146            (go-btn   (make-instance 'button :text "GO!" :master nav :command #'navigate-button-cb))
147            (url-bar  (make-instance 'text :height 1     :master nav))
148            (sf       (make-instance 'scrolled-frame :padding 10 :takefocus nil)))
149       (setf *url-bar* url-bar)
150       (setf *window-content* (interior sf))
151       (setf (text url-bar) "about:phos")
152       (pack nav :fill :both)
153       (pack back-btn :side :left)
154       (pack forw-btn :side :left)
155       (pack url-bar  :side :left :expand t :fill :both)
156       (pack go-btn   :side :left)
157       (pack sf :side :top :fill :both :expand t)
158       (do-render url))))
159 
160 ;; (nodgui.demo:demo)
161 
162 ;; (main "gemini://gemini.omarpolo.com/")