Mercurial > projects > dynamin
annotate dynamin/gui/text_box.d @ 8:b621b528823d
whenXX methods have to come before the event if switched to template mixins.
| author | Jordan Miner <jminer7@gmail.com> |
|---|---|
| date | Wed, 15 Jul 2009 14:04:55 -0500 |
| parents | aa4efef0f0b1 |
| children | ccc108b25a0a |
| rev | line source |
|---|---|
| 0 | 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) 2007-2009 | |
| 19 * the Initial Developer. All Rights Reserved. | |
| 20 * | |
| 21 * Contributor(s): | |
| 22 * Jordan Miner <jminer7@gmail.com> | |
| 23 * | |
| 24 */ | |
| 25 | |
| 26 module dynamin.gui.text_box; | |
| 27 | |
| 28 import dynamin.all_painting; | |
| 29 import dynamin.all_core; | |
| 30 import dynamin.all_gui; | |
| 31 | |
| 32 /** | |
| 33 * A control that allows text to be entered and edited. | |
| 34 * | |
| 35 * The appearance of a text box with Windows Classic: | |
| 36 * | |
| 37 * $(IMAGE ../web/example_text_box.png) | |
| 38 */ | |
| 39 class TextBox : Scrollable { | |
| 40 protected: | |
| 41 string _text; | |
| 42 int _caret = 0; | |
| 43 override Size contentBestSize() { | |
| 44 return Size(0, 0); | |
| 45 } | |
| 46 override void whenContentPainting(PaintingEventArgs e) { | |
| 47 with(e.graphics) { | |
| 48 source = Color.White; | |
| 49 paint(); | |
| 50 source = Color.Black; | |
| 51 drawText(_text, 1, 1); | |
| 52 if(focused) { | |
| 53 Size ex = getTextExtents(_text[0.._caret]); | |
| 54 moveTo(1+ex.width+0.5, 1); | |
| 55 lineTo(1+ex.width+0.5, 14); | |
| 56 stroke(); | |
| 57 } | |
| 58 } | |
| 59 } | |
| 60 override void whenContentMouseDown(MouseEventArgs e) { | |
| 61 focus(); | |
| 62 repaint(); | |
| 63 } | |
| 64 override void whenKeyDown(KeyEventArgs e) { | |
| 65 switch(e.key) { | |
| 66 case Key.Backspace: | |
| 67 if(_caret > 0) | |
| 68 _text = _text[0.._caret-1] ~ _text[_caret..$]; | |
| 69 if(_caret > 0) | |
| 70 _caret--; | |
| 71 break; | |
| 72 case Key.Delete: | |
| 73 if(_text.length > _caret) | |
| 74 _text = _text[0.._caret] ~ _text[_caret+1..$]; | |
| 75 break; | |
| 76 case Key.Right: | |
| 77 if(_caret < _text.length) | |
| 78 _caret++; | |
| 79 break; | |
| 80 case Key.Left: | |
| 81 if(_caret > 0) | |
| 82 _caret--; | |
| 83 break; | |
| 84 case Key.Home: | |
| 85 _caret = 0; | |
| 86 break; | |
| 87 case Key.End: | |
| 88 _caret = _text.length; | |
| 89 break; | |
| 90 default: | |
| 91 return; | |
| 92 } | |
| 93 repaint(); | |
| 94 } | |
| 95 override void whenKeyTyped(KeyTypedEventArgs e) { | |
| 96 _text = format("{}{}{}", _text[0.._caret], e.character, _text[_caret..$]); | |
| 97 _caret++; | |
| 98 repaint(); | |
| 99 } | |
| 100 override void whenMouseDown(MouseEventArgs e) { | |
| 101 focus(); | |
| 102 } | |
| 103 public: | |
| 104 override Size bestSize() { | |
| 105 // TODO: columns and rows | |
| 106 return Size(100, 20); | |
| 107 } | |
| 108 override int baseline() { return 14; } | |
| 109 | |
|
8
b621b528823d
whenXX methods have to come before the event if switched to template mixins.
Jordan Miner <jminer7@gmail.com>
parents:
0
diff
changeset
|
110 /// Override this method in a subclass to handle the SelectionChanged event. |
|
b621b528823d
whenXX methods have to come before the event if switched to template mixins.
Jordan Miner <jminer7@gmail.com>
parents:
0
diff
changeset
|
111 protected void whenSelectionChanged(EventArgs e) { } |
| 0 | 112 /// This event occurs after the selection has changed. |
| 113 Event!() SelectionChanged; | |
| 114 | |
| 115 this() { | |
| 116 SelectionChanged = new Event!()(&whenSelectionChanged); | |
| 117 | |
| 118 super(); | |
| 119 _focusable = true; | |
| 120 content.cursor = Cursor.Text; | |
| 121 | |
| 122 // TODO: change if Multiline is added | |
| 123 visibleScrollBars = VisibleScrollBars.None; | |
| 124 elasticX = true; | |
| 125 elasticY = false; | |
| 126 } | |
| 127 } | |
| 128 |