1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
|
(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Util
open Preferences
type color = GDraw.color
type model_event = [ `INSERT | `REMOVE | `SET of int * color ]
class type model =
object
method changed : callback:(model_event -> unit) -> unit
method length : int
method fold : 'a. ('a -> color -> 'a) -> 'a -> 'a
end
let i2f = float_of_int
let f2i = int_of_float
let color_eq (c1 : GDraw.color) (c2 : GDraw.color) = match c1, c2 with
| `BLACK, `BLACK -> true
| `COLOR c1, `COLOR c2 -> c1 == c2
| `NAME s1, `NAME s2 -> String.equal s1 s2
| `RGB (r1, g1, b1), `RGB (r2, g2, b2) -> r1 = r2 && g1 = g2 && b1 = b2
| `WHITE, `WHITE -> true
| _ -> false
class type segment_signals =
object
inherit GObj.misc_signals
inherit GUtil.add_ml_signals
method clicked : callback:(int -> unit) -> GtkSignal.id
end
class segment_signals_impl obj (clicked : 'a GUtil.signal) : segment_signals =
object
val after = false
inherit GObj.misc_signals obj
inherit GUtil.add_ml_signals obj [clicked#disconnect]
method clicked = clicked#connect ~after
end
class segment () =
let box = GBin.frame () in
let eventbox = GBin.event_box ~packing:box#add () in
let draw = GMisc.image ~packing:eventbox#add () in
object (self)
inherit GObj.widget box#as_widget
val mutable width = 1
val mutable height = 20
val mutable model : model option = None
val mutable default : color = `WHITE
val mutable pixmap : GDraw.pixmap = GDraw.pixmap ~width:1 ~height:1 ()
val clicked = new GUtil.signal ()
initializer
box#misc#set_size_request ~height ();
let cb rect =
let w = rect.Gtk.width in
let h = rect.Gtk.height in
(** Only refresh when size actually changed, otherwise loops *)
if self#misc#visible && (width <> w || height <> h) then begin
width <- w;
height <- h;
self#redraw ();
end
in
let _ = box#misc#connect#size_allocate cb in
let clicked_cb ev = match model with
| None -> true
| Some md ->
let x = GdkEvent.Button.x ev in
let (width, _) = pixmap#size in
let len = md#length in
let idx = f2i ((x *. i2f len) /. i2f width) in
let () = clicked#call idx in
true
in
let _ = eventbox#event#connect#button_press clicked_cb in
let cb show = if show then self#misc#show () else self#misc#hide () in
stick show_progress_bar self cb;
(** Initial pixmap *)
draw#set_pixmap pixmap
method set_model md =
model <- Some md;
let changed_cb = function
| `INSERT | `REMOVE ->
if self#misc#visible then self#refresh ()
| `SET (i, color) ->
if self#misc#visible then self#fill_range color i (i + 1)
in
md#changed changed_cb
method private fill_range color i j = match model with
| None -> ()
| Some md ->
let i = i2f i in
let j = i2f j in
let width = i2f width in
let len = i2f md#length in
let x = f2i ((i *. width) /. len) in
let x' = f2i ((j *. width) /. len) in
let w = x' - x in
pixmap#set_foreground color;
pixmap#rectangle ~x ~y:0 ~width:w ~height ~filled:true ();
draw#set_mask None;
method set_default_color color = default <- color
method default_color = default
method private redraw () =
pixmap <- GDraw.pixmap ~width ~height ();
draw#set_pixmap pixmap;
self#refresh ();
method private refresh () = match model with
| None -> ()
| Some md ->
pixmap#set_foreground default;
pixmap#rectangle ~x:0 ~y:0 ~width ~height ~filled:true ();
let make (k, cur, accu) v = match cur with
| None -> pred k, Some (k, k, v), accu
| Some (i, j, w) ->
if k = j - 1 && color_eq v w then pred k, Some (k, i, w), accu
else pred k, Some (k, k, v), (i, j, w) :: accu
in
let _, p, segments = md#fold make (md#length - 1, None, []) in
let segments = match p with
| None -> segments
| Some p -> p :: segments
in
List.iter (fun (i, j, v) -> self#fill_range v i (j + 1)) segments;
draw#set_mask None;
method connect =
new segment_signals_impl box#as_widget clicked
end
|
