fluid.onion_frame source code

1 ///
2 module fluid.onion_frame;
3 
4 import fluid.frame;
5 import fluid.utils;
6 import fluid.style;
7 import fluid.backend;
8 
9 
10 @safe:
11 
12 
13 /// An onion frame places its children as layers, drawing one on top of the other, instead of on the side.
14 ///
15 /// Children are placed in order of drawing — the last child will be drawn last, and so, will appear on top.
16 alias onionFrame = simpleConstructor!OnionFrame;
17 
18 /// ditto
19 class OnionFrame : Frame {
20 
21     this(T...)(T args) {
22 
23         super(args);
24 
25     }
26 
27     protected override void resizeImpl(Vector2 available) {
28 
29         import std.algorithm : max;
30 
31         minSize = Vector2(0, 0);
32 
33         // Check each child
34         foreach (child; children) {
35 
36             // Resize the child
37             child.resize(tree, theme, available);
38 
39             // Update minSize
40             minSize.x = max(minSize.x, child.minSize.x);
41             minSize.y = max(minSize.y, child.minSize.y);
42 
43         }
44 
45     }
46 
47     protected override void drawImpl(Rectangle outer, Rectangle inner) {
48 
49         const style = pickStyle();
50         style.drawBackground(tree.io, outer);
51 
52         foreach (child; filterChildren) {
53 
54             child.draw(inner);
55 
56         }
57 
58     }
59 
60 }
61 
62 ///
63 unittest {
64 
65     import fluid;
66 
67     auto myFrame = onionFrame(
68 
69         // Draw an image
70         imageView("logo.png"),
71 
72         // Draw a label in the middle of the frame
73         label(
74             layout!(1, "center"),
75             "Hello, Fluid!"
76         ),
77 
78     );
79 
80 }
81 
82 unittest {
83 
84     import fluid.label;
85     import fluid.structs;
86     import fluid.image_view;
87 
88     ImageView view;
89     Label[2] labels;
90 
91     auto io = new HeadlessBackend(Vector2(1000, 1000));
92     auto root = onionFrame(
93 
94         view = imageView("logo.png"),
95 
96         labels[0] = label(
97             "Hello, Fluid!"
98         ),
99 
100         labels[1] = label(
101             layout!(1, "center"),
102             "Hello, Fluid! This text should fit the image."
103         ),
104 
105     );
106 
107     with (Rule)
108     root.theme = nullTheme.derive(
109         rule!Label(textColor = color!"000"),
110     );
111     root.io = io;
112     root.draw();
113 
114     // imageView
115     io.assertTexture(view.texture, Vector2(0, 0), color!"fff");
116 
117     // First label
118     io.assertTexture(labels[0].text.texture.chunks[0], Vector2(0, 0), color("#fff"));
119 
120     // TODO onionFrame should perform shrink-expand ordering similarly to `space`. The last label should wrap.
121 
122 }