dguihub.picturebox source code

1 /** DGui project file.
2 
3 Copyright: Trogu Antonio Davide 2011-2013
4 
5 License: $(HTTP boost.org/LICENSE_1_0.txt, Boost License 1.0).
6 
7 Authors: Trogu Antonio Davide
8 */
9 module dguihub.picturebox;
10 
11 import dguihub.core.controls.control;
12 import dguihub.canvas;
13 
14 enum SizeMode {
15    normal = 0,
16    autoSize = 1,
17 }
18 
19 class PictureBox : Control {
20    private SizeMode _sm = SizeMode.normal;
21    private Image _img;
22 
23    public override void dispose() {
24       if (this._img) {
25          this._img.dispose();
26          this._img = null;
27       }
28 
29       super.dispose();
30    }
31 
32    alias @property Control.bounds bounds;
33 
34    @property public override void bounds(Rect r) {
35       if (this._img && this._sm is SizeMode.autoSize) {
36          // Ignora 'r.size' e usa la dimensione dell'immagine
37          Size sz = r.size;
38          super.bounds = Rect(r.x, r.y, sz.width, sz.height);
39 
40       } else {
41          super.bounds = r;
42       }
43    }
44 
45    @property public final SizeMode sizeMode() {
46       return this._sm;
47    }
48 
49    @property public final void sizeMode(SizeMode sm) {
50       this._sm = sm;
51 
52       if (this.created) {
53          this.redraw();
54       }
55    }
56 
57    @property public final Image image() {
58       return this._img;
59    }
60 
61    @property public final void image(Image img) {
62       if (this._img) {
63          this._img.dispose(); // Destroy the previous image
64       }
65 
66       this._img = img;
67 
68       if (this.created) {
69          this.redraw();
70       }
71    }
72 
73    protected override void createControlParams(ref CreateControlParams ccp) {
74       ccp.className = WC_DPICTUREBOX;
75       ccp.defaultCursor = SystemCursors.arrow;
76       ccp.classStyle = ClassStyles.parentDC;
77 
78       super.createControlParams(ccp);
79    }
80 
81    protected override void onPaint(PaintEventArgs e) {
82       if (this._img) {
83          Canvas c = e.canvas;
84 
85          switch (this._sm) {
86          case SizeMode.autoSize:
87             c.drawImage(this._img, Rect(nullPoint, this.size));
88             break;
89 
90          default:
91             c.drawImage(this._img, 0, 0);
92             break;
93          }
94       }
95 
96       super.onPaint(e);
97    }
98 }