atelier.ui.colorpicker source code

1 /**
2     Color picker
3 
4     Copyright: (c) Enalye 2017
5     License: Zlib
6     Authors: Enalye
7 */
8 
9 module atelier.ui.colorpicker;
10 
11 import atelier.core;
12 import atelier.render;
13 import atelier.common;
14 
15 import atelier.ui;
16 
17 /+
18 class ColorViewer: GuiElement {
19 	Color color;
20 
21 	this() {}
22 
23 	override void onEvent(Event event) {}
24 	override void update(float deltaTime) {}
25 	override void draw() {
26 		drawFilledRect(center - size / 2f, size, color);
27 	}
28 }
29 
30 class ColorPicker: GuiElement {
31 	private {
32 		DropDownList _blendList;
33 		Slider _redSlider, _blueSlider, _greenSlider, _alphaSlider;
34 		ColorViewer _viewer;
35 	}
36 
37 	@property {
38 		Color color() const {
39 			return Color(_redSlider.value01, _blueSlider.value01,
40 				_greenSlider.value01, _alphaSlider.value01);
41 		}
42 
43 		Blend blend() const {
44 			switch(_blendList.selected) {
45 			case 0:
46 				return Blend.AlphaBlending;
47 			case 1:
48 				return Blend.AdditiveBlending;
49 			case 2:
50 				return Blend.ModularBlending;
51 			case 3:
52 				return Blend.NoBlending;
53 			default:
54 				throw new Exception("Invalid kind of blending");
55 			}
56 		}
57 	}
58 
59 	this(Color newColor = Color.white, Blend newBlend = Blend.AlphaBlending) {
60 		Slider makeSlider(VContainer container, string title) {
61 			auto slider = new HSlider;
62 			slider.min = 0;
63 			slider.min = 255;
64 			slider.step = 255;
65 			slider.size = Vec2f(255f, 10f);
66 
67 			auto hc = new HContainer;
68 			hc.spacing = Vec2f(10f, 0f);
69 			hc.addChildGui(new Label(title));
70 			hc.addChildGui(slider);
71 			container.addChildGui(hc);
72 			return slider;
73 		}
74 
75 		auto container = new VContainer;
76 		container.spacing = Vec2f(0f, 10f);
77 		_redSlider = makeSlider(container, "R");
78 		_blueSlider = makeSlider(container, "G");
79 		_greenSlider = makeSlider(container, "B");
80 		_alphaSlider = makeSlider(container, "A");
81 
82 		_blendList = new DropDownList(Vec2f(200f, 25f), 4U);
83 		foreach(mode; [
84 			"Alpha Blending", "Additive Blending",
85 			"Modular Blending", "No Blending"])
86 			_blendList.add(mode);
87 		container.addChildGui(_blendList);
88 
89 		_redSlider.value01 = newColor.r;
90 		_blueSlider.value01 = newColor.g;
91 		_greenSlider.value01 = newColor.b;
92 		_alphaSlider.value01 = newColor.a;
93 
94 		_viewer = new ColorViewer;
95 		_viewer.size = Vec2f(100f, 100f);
96 
97 		auto hc2 = new HContainer;
98 		hc2.spacing = Vec2f(20f, 5f);
99 		hc2.addChildGui(container);
100 		hc2.addChildGui(_viewer);
101 
102 		super("Couleur", hc2.size);
103 		layout.addChildGui(hc2);
104 
105 		switch(newBlend) with(Blend) {
106 		case AlphaBlending:
107 			_blendList.selected = 0U;
108 			break;
109 		case AdditiveBlending:
110 			_blendList.selected = 1U;
111 			break;
112 		case ModularBlending:
113 			_blendList.selected = 2U;
114 			break;
115 		case NoBlending:
116 			_blendList.selected = 3U;
117 			break;
118 		default:
119 			_blendList.selected = 0U;
120 		}
121 	}
122 
123 	override void update(float deltaTime) {
124 		super.update(deltaTime);
125 		_viewer.color = color();
126 	}
127 }+/