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comparison mde/gui/widget/Widget.d @ 34:6b4116e6355c

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Work on the Gui: some of the framework for drag & drop. Also made Window an IWidget. Implemented getWidget(x,y) to find the widget under this location for IWidgets (but not Gui). Made Window an IWidget and made it work a little more similarly to widgets. Implemented callbacks on the Gui for mouse events (enabling drag & drop, etc.). committer: Diggory Hardy <diggory.hardy@gmail.com>
author Diggory Hardy <diggory.hardy@gmail.com>
date Fri, 02 May 2008 16:03:52 +0100
parents 316b0230a849
children 57d000574d75
comparison
equal deleted inserted replaced
33:6886402c1545 34:6b4116e6355c
15 15
16 /// GUI Widget module. 16 /// GUI Widget module.
17 module mde.gui.widget.Widget; 17 module mde.gui.widget.Widget;
18 18
19 public import mde.gui.widget.Ifaces; 19 public import mde.gui.widget.Ifaces;
20 import mde.gui.IGui;
20 import mde.gui.exception; 21 import mde.gui.exception;
21 22
22 import gl = mde.gl.basic; 23 import gl = mde.gl.basic;
23 24
24 import tango.io.Stdout; 25 import tango.io.Stdout;
28 * 29 *
29 * Do not use directly (i.e. only for inheriting from). 30 * Do not use directly (i.e. only for inheriting from).
30 */ 31 */
31 class Widget : IWidget 32 class Widget : IWidget
32 { 33 {
33 /** Basic draw method: draw the background */
34 void draw (int x, int y) {
35 window.renderer.drawWidgetBack (x,y, w,h);
36 }
37
38 /** Dummy event method (ignore) */
39 void clickEvent (ushort cx, ushort cy, ubyte b, bool state) {}
40
41 /** Minimum size is zero. */ 34 /** Minimum size is zero. */
42 void getMinimumSize (out int w, out int h) {} // w,h initialised to 0 35 void getMinimumSize (out int w, out int h) {} // w,h initialised to 0
43 /** Current size. */ 36 /** Current size. */
44 void getCurrentSize (out int w, out int h) { 37 void getCurrentSize (out int w, out int h) {
45 w = this.w; 38 w = this.w;
46 h = this.h; 39 h = this.h;
47 } 40 }
48 41
42 void setPosition (int x, int y) {
43 this.x = x;
44 this.y = y;
45 }
46
47 /** Return self, since we don't have child widgets and the method wouldn't have been called
48 * unless the location was over us. Valid for all widgets without children. */
49 IWidget getWidget (int,int) {
50 return this;
51 }
52
53 /** Dummy event method (widget doesn't respond to events) */
54 void clickEvent (ushort cx, ushort cy, ubyte b, bool state) {}
55
56 /** Basic draw method: draw the background (all widgets should do this) */
57 void draw () {
58 window.renderer.drawWidgetBack (x,y, w,h);
59 }
60
49 protected: 61 protected:
50 IWindow window; // the enclosing window 62 IWindow window; // the enclosing window
63 int x, y; // position
51 int w, h; // size 64 int w, h; // size
52 } 65 }
53 66
54 //BEGIN Widgets 67 //BEGIN Widgets
55 /// Draws a box. That's it. 68 /// Draws a box. That's it.
56 class BoxWidget : Widget 69 class BoxWidget : Widget
57 { 70 {
58 this (IWindow wind, IParentWidget, int[] data) { 71 this (IWindow wind, IWidget, int[] data) {
59 if (data.length != 2) throw new WidgetDataException; 72 if (data.length != 2) throw new WidgetDataException;
60 73
61 window = wind; 74 window = wind;
62 75
63 w = data[0]; 76 w = data[0];
64 h = data[1]; 77 h = data[1];
65 } 78 }
66 void draw (int x, int y) { 79 void draw () {
67 gl.setColor(1f,0f,0f); 80 gl.setColor(1f,0f,0f);
68 window.renderer.drawBox (x,y, w,h); 81 window.renderer.drawBox (x,y, w,h);
69 } 82 }
70 } 83 }
71 84
72 /// First interactible widget 85 /// First interactible widget
73 class ButtonWidget : Widget 86 class ButtonWidget : Widget
74 { 87 {
75 bool pushed = false;// true if button is pushed in 88 bool pushed = false; // true if button is pushed in (visually)
89 // pushed is not the same as the button being clicked but not yet released.
90 // it is whether the mouse is over the button after being clicked.
76 91
77 this (IWindow wind, IParentWidget, int[] data) { 92 this (IWindow wind, IWidget, int[] data) {
78 if (data.length != 2) throw new WidgetDataException; 93 if (data.length != 2) throw new WidgetDataException;
79 94
80 window = wind; 95 window = wind;
81 96
82 w = data[0]; 97 w = data[0];
83 h = data[1]; 98 h = data[1];
84 } 99 }
85 100
86 void draw (int x, int y) { 101 void draw () {
87 if (pushed) 102 if (pushed)
88 gl.setColor (1f, 0f, 1f); 103 gl.setColor (1f, 0f, 1f);
89 else 104 else
90 gl.setColor (.6f, 0f, .6f); 105 gl.setColor (.6f, 0f, .6f);
91 window.renderer.drawBox (x,y, w,h); 106 window.renderer.drawBox (x,y, w,h);
95 w = this.w; // button is not resizable 110 w = this.w; // button is not resizable
96 h = this.h; 111 h = this.h;
97 } 112 }
98 113
99 void clickEvent (ushort, ushort, ubyte b, bool state) { 114 void clickEvent (ushort, ushort, ubyte b, bool state) {
100 if (b == 1) pushed = state; // very basic 115 if (b == 1 && state == true) {
116 pushed = true;
117 window.gui.addClickCallback (&clickWhileHeld);
118 window.gui.addMotionCallback (&motionWhileHeld);
119 }
120 }
121 // Called when a mouse motion/click event occurs while (held == true)
122 void clickWhileHeld (ushort cx, ushort cy, ubyte b, bool state) {
123 if (cx >= x && cx < x+w && cy >= y && cy < y+h) // button event
124 Stdout ("Button clicked!").newline;
125
126 pushed = false;
127 window.gui.removeCallbacks (cast(void*) this);
128 }
129 void motionWhileHeld (ushort cx, ushort cy) {
130 if (cx >= x && cx < x+w && cy >= y && cy < y+h) pushed = true;
131 else pushed = false;
101 } 132 }
102 } 133 }
103 //END Widgets 134 //END Widgets