Mercurial > projects > dynamin

comparison dynamin/gui/button.d @ 0:aa4efef0f0b1

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Initial commit of code.
author Jordan Miner <jminer7@gmail.com>
date Mon, 15 Jun 2009 22:10:48 -0500
parents
children ccc108b25a0a
comparison
equal deleted inserted replaced
-1:000000000000 0:aa4efef0f0b1
1 // Written in the D programming language
2 // www.digitalmars.com/d/
3
4 /*
5 * The contents of this file are subject to the Mozilla Public License Version
6 * 1.1 (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 * http://www.mozilla.org/MPL/
9 *
10 * Software distributed under the License is distributed on an "AS IS" basis,
11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 * for the specific language governing rights and limitations under the
13 * License.
14 *
15 * The Original Code is the Dynamin library.
16 *
17 * The Initial Developer of the Original Code is Jordan Miner.
18 * Portions created by the Initial Developer are Copyright (C) 2006-2009
19 * the Initial Developer. All Rights Reserved.
20 *
21 * Contributor(s):
22 * Jordan Miner <jminer7@gmail.com>
23 *
24 */
25
26 module dynamin.gui.button;
27
28 import dynamin.all_core;
29 import dynamin.all_gui;
30 import dynamin.all_painting;
31 import tango.io.Stdout;
32 import dynamin.c.cairo; // TODO: remove
33
34 // TODO: maybe change to ControlState and add Disabled ?
35 enum ButtonState {
36 Normal, Hot, Pressed
37 }
38 // TODO: move to another file
39 enum TextImageRelation {
40 Overlay, TextBeforeImage, ImageBeforeText, TextAboveImage, ImageAboveText
41 }
42
43 /**
44 * A button is a control that can be clicked to perform an action.
45 *
46 * The appearance of a button with Windows Classic:
47 *
48 * $(IMAGE ../web/example_button.png)
49 */
50 class Button : Control {
51 protected:
52 ButtonState _state;
53 override void whenMouseDragged(MouseEventArgs e) {
54 if(contains(e.x, e.y))
55 state = ButtonState.Pressed;
56 else
57 state = ButtonState.Normal;
58 }
59 override void whenMouseEntered(EventArgs e) {
60 state = ButtonState.Hot;
61 }
62 override void whenMouseLeft(EventArgs e) {
63 state = ButtonState.Normal;
64 }
65 override void whenMouseDown(MouseEventArgs e) {
66 if(e.button == MouseButton.Left) {
67 state = ButtonState.Pressed;
68 focus();
69 }
70 }
71 override void whenMouseUp(MouseEventArgs e) {
72 if(state != ButtonState.Pressed) return;
73 state = ButtonState.Hot;
74 clicked(new EventArgs);
75 }
76 override void whenKeyDown(KeyEventArgs e) {
77 if(e.key == Key.Space)
78 state = ButtonState.Pressed;
79 }
80 override void whenKeyUp(KeyEventArgs e) {
81 if(e.key == Key.Space) {
82 if(state != ButtonState.Pressed) return;
83 state = ButtonState.Normal;
84 clicked(new EventArgs);
85 }
86 }
87 override void whenPainting(PaintingEventArgs e) {
88 Theme.current.Button_paint(this, e.graphics);
89 return;
90 // TODO: move to a theme or delete
91 with(e.graphics) {
92 if(_state == ButtonState.Hot)
93 source = Color(200, 0, 0);
94 else if(_state == ButtonState.Pressed)
95 source = Color(110, 0, 0);
96 else
97 source = Color(220, 80, 80);
98 moveTo(3, 0);
99 lineTo(width-3, 0);
100 lineTo(width, 3);
101 lineTo(width, height-3);
102 lineTo(width-3, height);
103 lineTo(3, height);
104 lineTo(0, height-3);
105 lineTo(0, 3);
106 closePath();
107 fill();
108 auto grad = cairo_pattern_create_linear(0, 0, 0, height/2+3);
109 cairo_pattern_add_color_stop_rgba(grad, 0, 1, 1, 1, .4);
110 cairo_pattern_add_color_stop_rgba(grad, 1, 1, 1, 1, .05);
111 cairo_set_source(handle, grad);
112 cairo_pattern_destroy(grad);
113 moveTo(3, 0);
114 lineTo(width-3, 0);
115 lineTo(width, 3);
116 lineTo(width, cast(int)height/2-3);
117 lineTo(width-3, cast(int)height/2);
118 lineTo(3, cast(int)height/2);
119 lineTo(0, cast(int)height/2+3);
120 lineTo(0, 3);
121 closePath();
122 fill();
123
124 source = _state == ButtonState.Pressed ? Color.White : Color.Black;
125 fontSize = 13;
126 drawText(text, 5, height/2);
127 }
128 return;
129
130 }
131 public void paintFore(Graphics g) {
132 auto extents = g.getTextExtents(text);
133 g.drawText(text, (width-extents.width)/2, (height-extents.height)/2);
134 }
135
136 public:
137 /// Override this method in a subclass to handle the Clicked event.
138 protected void whenClicked(EventArgs e) { }
139 /// This event occurs after the button has been clicked.
140 Event!() clicked;
141
142 this() {
143 clicked = new Event!()(&whenClicked);
144 _focusable = true;
145 }
146 this(string text) {
147 this();
148 this.text = text;
149 }
150 override Size bestSize() { return Theme.current.Button_bestSize(this); }
151 ButtonState state() { return _state; }
152 void state(ButtonState s) { _state = s; repaint(); }
153 }