w4d.parser.colorset source code

1 // Written in the D programming language.
2 /++
3  + Authors: KanzakiKino
4  + Copyright: KanzakiKino 2018
5  + License: LGPL-3.0
6 ++/
7 module w4d.parser.colorset;
8 import w4d.parser.exception,
9        w4d.style.color,
10        w4d.style.widget;
11 import gl3n.linalg;
12 import dyaml;
13 import std.uni;
14 
15 private @property WidgetState toState ( string v )
16 {
17     switch ( v.toLower ) with ( WidgetState ) {
18         case "focused" : return Focused;
19         case "tracked" : return Tracked;
20         case "pressed" : return Pressed;
21         case "hovered" : return Hovered;
22         case "selected": return Selected;
23         case "default" : return None;
24 
25         default:
26             throw new ParsingException( "Unknown state." );
27     }
28 }
29 
30 /// Parses Node as color.
31 vec4 parseColor ( Node seq )
32 {
33     enforce( seq.isSequence, "Color must be specified by sequence." );
34 
35     auto arr = seq.sequence!float;
36     switch ( arr.length ) {
37         case 0:
38             return vec4( 0, 0, 0, 0 );
39         case 1:
40             return vec4( arr[0], arr[0], arr[0], 1 );
41         case 3:
42             return vec4( arr[0], arr[1], arr[2], 1 );
43         case 4:
44             return vec4( arr[0], arr[1], arr[2], arr[3] );
45 
46         default:
47             throw new ParsingException( "Invalid color sequence." );
48     }
49 }
50 
51 /// Parses Node as colorset.
52 void parseColorSet ( Node block, ref ColorSet colorset )
53 {
54     foreach ( string name, Node node; block ) {
55         colorset[name] = parseColor( node );
56     }
57 }
58 
59 /// Parses Node as collection of colorset.
60 void parseColorSets ( Node root, WidgetStyle style )
61 {
62     foreach ( string name, Node node; root ) {
63         auto state = name.toState;
64         if ( state !in style.colorsets ) {
65             style.colorsets[state] = new ColorSet();
66         }
67         parseColorSet( node, style.colorsets[state] );
68     }
69 }
70 
71 /// Parses file as collection of colorset dynamically.
72 void parseColorSetsFromFile ( string path, WidgetStyle style )
73 {
74     Loader.fromFile(path).load().parseColorSets( style );
75 }
76 /// Parses file as collection of colorset statically.
77 void parseColorSetsFromFile ( string path ) ( WidgetStyle style )
78 {
79     Loader.fromString(import(path)).load().parseColorSets( style );
80 }