Mercurial > projects > dynamin
annotate dynamin/gui/container.d @ 104:5c8c1c2e12c0
Change from real to double.
double is not dependant on the platform, and it uses less space.
| author | Jordan Miner <jminer7@gmail.com> |
|---|---|
| date | Fri, 06 Jul 2012 18:39:45 -0500 |
| parents | 73060bc3f004 |
| children | acdbb30fee7e |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* | |
|
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Change license to Boost 1.0 and MPL 2.0.
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3 * Copyright Jordan Miner |
| 0 | 4 * |
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103
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5 * This Source Code Form is subject to the terms of the Mozilla Public |
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6 * License, v. 2.0. If a copy of the MPL was not distributed with this |
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7 * file, You can obtain one at http://mozilla.org/MPL/2.0/. |
| 0 | 8 * |
| 9 */ | |
| 10 | |
| 11 module dynamin.gui.container; | |
| 12 | |
| 13 import dynamin.all_core; | |
| 14 import dynamin.all_painting; | |
| 15 import dynamin.all_gui; | |
| 16 import dynamin.gui.control; | |
| 17 import dynamin.gui.events; | |
| 62 | 18 import dynamin.gui.button; |
| 0 | 19 import tango.io.Stdout; |
| 20 | |
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21 alias List!(Control, true) ControlList; |
| 0 | 22 |
| 23 /// | |
| 24 class Container : Control { | |
| 25 protected: | |
| 26 ControlList _children; | |
| 27 Size _minSize; | |
| 28 Size _maxSize; | |
| 62 | 29 Button _defaultButton; |
| 0 | 30 |
| 31 override void whenResized(EventArgs e) { | |
| 32 layout(); | |
| 33 } | |
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34 // If the specified array is large enough to hold the results, no heap |
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35 // allocation will be done. |
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36 Control[] getFocusableDescendants(Control[] des = null) { |
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37 uint cur = 0; |
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38 foreach(d; &descendantsPlus) { |
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39 if(d.focusable) { // TODO: && ch.enabled) { |
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40 if(cur == des.length) |
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41 des.length = des.length + 20; |
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42 des[cur++] = d; |
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43 } |
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44 } |
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45 return des[0..cur]; |
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46 } |
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47 unittest { |
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48 class MyControl : Control { |
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49 this() { |
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50 _focusable = true; |
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51 } |
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52 } |
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53 auto container1 = new Container(); |
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54 auto container2 = new Container(); |
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55 auto container3 = new Container(); |
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56 auto container4 = new Container(); |
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57 container2._focusable = true; |
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58 container4._focusable = true; |
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59 auto ctrl1 = new MyControl(); |
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60 auto ctrl2 = new MyControl(); |
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61 auto ctrl3 = new MyControl(); |
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62 |
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63 container1.add(container2); |
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64 container1.add(container3); |
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65 container3.add(container4); |
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66 container2.add(ctrl1); |
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67 container4.add(ctrl2); |
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68 container4.add(ctrl3); |
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69 assert(container1.getFocusableDescendants() == |
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70 [cast(Control)container2, ctrl1, container4, ctrl2, ctrl3]); |
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71 Control[5] buf; |
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72 assert(container1.getFocusableDescendants(buf).ptr == buf.ptr); |
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73 } |
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74 |
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75 // not an event |
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76 void whenChildrenChanged(ListChangeType, Control oldChild, Control newChild, uint) { |
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77 if(oldChild) { |
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78 oldChild.parent = null; |
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79 repaint(); |
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80 |
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81 scope e = new HierarchyEventArgs(oldChild); |
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82 descendantRemoved(e); |
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83 } |
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84 |
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85 if(newChild) { |
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86 if(newChild.parent) |
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87 newChild.parent.remove(newChild); |
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88 newChild.parent = this; |
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89 repaint(); |
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90 |
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91 void callAdded(Control ctrl) { |
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92 scope e = new HierarchyEventArgs(ctrl); |
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93 descendantAdded(e); |
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94 |
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95 if(auto cntr = cast(Container)ctrl) { |
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96 foreach(c; cntr._children) |
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97 callAdded(c); |
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98 } |
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99 } |
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100 callAdded(newChild); |
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101 } |
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102 |
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103 } |
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104 |
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105 void dispatchDescendantAdded(HierarchyEventArgs e) { |
| 62 | 106 if(e.descendant is defaultButton) |
| 107 (cast(Button)e.descendant)._isDefault = true; | |
| 108 | |
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109 descendantAdded.callHandlers(e); |
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110 descendantAdded.callMainHandler(e); |
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111 e.levels = e.levels + 1; |
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112 if(_parent) |
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113 _parent.descendantAdded(e); |
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114 } |
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115 void dispatchDescendantRemoved(HierarchyEventArgs e) { |
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116 descendantRemoved.callHandlers(e); |
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117 descendantRemoved.callMainHandler(e); |
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118 e.levels = e.levels + 1; |
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119 if(_parent) |
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120 _parent.descendantRemoved(e); |
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121 } |
| 62 | 122 |
| 123 override void whenKeyDown(KeyEventArgs e) { | |
| 124 if(e.key == Key.Enter && defaultButton) { | |
| 125 scope e2 = new EventArgs; | |
| 126 defaultButton.clicked(e2); | |
| 127 e.stopped = true; | |
| 128 } | |
| 129 } | |
| 130 | |
| 0 | 131 public: |
| 132 /// Override this method in a subclass to handle the minSizeChanged event. | |
| 133 protected void whenMinSizeChanged(EventArgs e) { } | |
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134 /// This event occurs after the control's minimum size has been changed. |
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135 Event!(whenMinSizeChanged) minSizeChanged; |
| 0 | 136 |
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137 /// Override this method in a subclass to handle the maxSizeChanged event. |
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138 protected void whenMaxSizeChanged(EventArgs e) { } |
| 0 | 139 /// This event occurs after the control's maximum size has been changed. |
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140 Event!(whenMaxSizeChanged) maxSizeChanged; |
| 0 | 141 |
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142 /// Override this method in a subclass to handle the descendantAdded event. |
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143 protected void whenDescendantAdded(HierarchyEventArgs e) { } |
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144 /// This event occurs after a control is added as a descendant of this container. |
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145 Event!(whenDescendantAdded) descendantAdded; |
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146 |
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147 /// Override this method in a subclass to handle the descendantRemoved event. |
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148 protected void whenDescendantRemoved(HierarchyEventArgs e) { } |
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149 /// This event occurs after a descendant of this container has been removed. |
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150 Event!(whenDescendantRemoved) descendantRemoved; |
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151 |
| 0 | 152 this() { |
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153 minSizeChanged .setUp(&whenMinSizeChanged); |
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154 maxSizeChanged .setUp(&whenMaxSizeChanged); |
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155 descendantAdded .setUp(&whenDescendantAdded, &dispatchDescendantAdded); |
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156 descendantRemoved.setUp(&whenDescendantRemoved, |
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157 &dispatchDescendantRemoved); |
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158 |
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159 _children = new ControlList(&whenChildrenChanged); |
| 0 | 160 |
| 161 elasticX = true; | |
| 162 elasticY = true; | |
| 163 } | |
| 62 | 164 |
| 165 /** | |
| 166 * Gets or sets the default button in this container. | |
| 167 */ | |
| 168 Button defaultButton() { return _defaultButton; } | |
| 169 /// ditto | |
| 170 void defaultButton(Button b) { | |
| 171 _defaultButton = b; | |
| 172 foreach(d; &descendants) { | |
| 173 if(b == d) | |
| 174 b._isDefault = true; | |
| 175 } | |
| 176 } | |
| 177 | |
| 0 | 178 override void dispatchPainting(PaintingEventArgs e) { |
| 179 super.dispatchPainting(e); | |
| 180 foreach(c; _children) { | |
| 181 e.graphics.save(); | |
| 182 e.graphics.translate(c.x, c.y); | |
| 183 c.setupGraphics(e.graphics); | |
| 184 c.painting(e); | |
| 185 e.graphics.restore(); | |
| 186 } | |
| 187 } | |
| 188 // TODO: make these use common code...get rid of copy and paste | |
| 189 override void dispatchMouseDown(MouseEventArgs e) { | |
| 190 auto c = getChildAtPoint(e.location); | |
| 191 if(c && getCaptorControl() !is this) { | |
| 192 e.location = e.location - c.location; | |
| 193 c.mouseDown(e); | |
| 194 e.location = e.location + c.location; | |
| 195 } else { | |
| 196 super.dispatchMouseDown(e); | |
| 197 } | |
| 198 } | |
| 199 override void dispatchMouseUp(MouseEventArgs e) { | |
| 200 auto c = getChildAtPoint(e.location); | |
| 201 if(c && getCaptorControl() !is this) { | |
| 202 e.location = e.location - c.location; | |
| 203 c.mouseUp(e); | |
| 204 e.location = e.location + c.location; | |
| 205 } else { | |
| 206 super.dispatchMouseUp(e); | |
| 207 } | |
| 208 } | |
| 209 override void dispatchMouseMoved(MouseEventArgs e) { | |
| 210 auto c = getChildAtPoint(e.location); | |
| 211 if(c && getCaptorControl() !is this) { | |
| 212 e.location = e.location - c.location; | |
| 213 c.mouseMoved(e); | |
| 214 e.location = e.location + c.location; | |
| 215 } else { | |
| 216 super.dispatchMouseMoved(e); | |
| 217 } | |
| 218 } | |
| 219 override void dispatchMouseDragged(MouseEventArgs e) { | |
| 220 auto c = getChildAtPoint(e.location); | |
| 221 if(c && getCaptorControl() !is this) { | |
| 222 e.location = e.location - c.location; | |
| 223 c.mouseDragged(e); | |
| 224 e.location = e.location + c.location; | |
| 225 } else { | |
| 226 super.dispatchMouseDragged(e); | |
| 227 } | |
| 228 } | |
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229 |
| 0 | 230 /** |
| 231 * Gets the child control at the specified point. If there are | |
| 232 * multiple child controls at the point, the topmost control is returned. | |
| 233 * If there is no child control at the point, null is returned. The returned | |
| 234 * control, if any, is a direct child of this container. | |
| 235 */ | |
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236 Control getChildAtPoint(double[] pt) { |
| 0 | 237 assert(pt.length == 2, "pt must be just an x and y"); |
| 238 return getChildAtPoint(Point(pt[0], pt[1])); | |
| 239 } | |
| 240 /// ditto | |
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241 Control getChildAtPoint(double x, double y) { |
| 0 | 242 return getChildAtPoint(Point(x, y)); |
| 243 } | |
| 244 /// ditto | |
| 245 Control getChildAtPoint(Point pt) { | |
| 246 for(int i = _children.count-1; i >= 0; --i) { | |
| 247 pt = pt - _children[i].location; | |
| 248 scope(exit) pt = pt + _children[i].location; | |
| 249 if(_children[i].contains(pt)) | |
| 250 return _children[i]; | |
| 251 } | |
| 252 return null; | |
| 253 } | |
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254 |
| 0 | 255 /** |
| 256 * Never returns null. If there is no descendant at the specified point, | |
| 257 * this container will be returned. | |
| 258 */ | |
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259 Control getDescendantAtPoint(double[] pt) { |
| 0 | 260 assert(pt.length == 2, "pt must be just an x and y"); |
| 261 return getDescendantAtPoint(Point(pt[0], pt[1])); | |
| 262 } | |
| 263 /// ditto | |
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264 Control getDescendantAtPoint(double x, double y) { |
| 0 | 265 return getDescendantAtPoint(Point(x, y)); |
| 266 } | |
| 267 /// ditto | |
| 268 Control getDescendantAtPoint(Point pt) { | |
| 269 Container des = this; | |
| 270 while(true) { | |
| 271 auto child = des.getChildAtPoint(pt); | |
| 272 if(!child) | |
| 273 return des; | |
| 274 auto isContainer = cast(Container)child; | |
| 275 if(isContainer) { | |
| 276 des = isContainer; | |
| 277 pt = pt - des.location; | |
| 278 // loop around with this container | |
| 279 } else { | |
| 280 return child; | |
| 281 } | |
| 282 } | |
| 283 } | |
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284 |
| 0 | 285 /** |
| 286 * Gets or sets the minimum size of this window. A minimum width or | |
| 287 * height of 0 means that there is no minimum width or height. | |
| 288 * The default is Size(0, 0). | |
| 289 */ | |
| 290 Size minSize() { return _minSize; } | |
| 291 /// ditto | |
| 292 void minSize(Size size) { | |
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293 if(_minSize == size) |
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294 return; |
| 0 | 295 _minSize = size; |
| 296 minSizeChanged(new EventArgs); | |
| 297 } | |
| 298 /// ditto | |
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299 void minSize(double[] size) { |
| 0 | 300 assert(size.length == 2, "size must be just a width and height"); |
| 301 minSize = Size(size[0], size[1]); | |
| 302 } | |
| 303 /// | |
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304 double minWidth() { return _minSize.width; } |
| 0 | 305 /// |
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306 double minHeight() { return _minSize.height; } |
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307 |
| 0 | 308 /** |
| 309 * Gets or sets the maximum size of this window. A maximum width or | |
| 310 * height of 0 means that there is no maximum width or height. | |
| 311 * The default is Size(0, 0). | |
| 312 */ | |
| 313 Size maxSize() { return _maxSize; } | |
| 314 /// ditto | |
| 315 void maxSize(Size size) { | |
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316 if(_maxSize == size) |
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317 return; |
| 0 | 318 _maxSize = size; |
| 319 minSizeChanged(new EventArgs); | |
| 320 } | |
| 321 /// ditto | |
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322 void maxSize(double[] size) { |
| 0 | 323 assert(size.length == 2, "size must be just a width and height"); |
| 324 maxSize = Size(size[0], size[1]); | |
| 325 } | |
| 326 /// | |
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327 double maxWidth() { return _maxSize.width; } |
| 0 | 328 /// |
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329 double maxHeight() { return _maxSize.height; } |
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330 |
| 0 | 331 /** |
| 332 * Causes this container to position its child controls. Called on every | |
| 333 * resize. Usually, this function will get each child's best size, and | |
| 334 * then set each child's location and height. The definition in Container | |
| 335 * is empty, as it is intended for subclasses to override. | |
| 336 */ | |
| 337 void layout() { | |
| 338 } | |
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339 |
| 0 | 340 protected void add(Control child) { |
| 341 _children.add(child); | |
| 342 } | |
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343 |
| 0 | 344 protected void remove(Control child) { |
| 345 _children.remove(child); | |
| 346 } | |
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347 |
| 58 | 348 /** |
| 349 * Calls the specified delegate with each child of this container, for | |
| 350 * use with foreach. | |
| 351 */ | |
| 352 int opApply(int delegate(ref Control item) dg) { | |
| 0 | 353 for(uint i = 0; i < _children.count; ++i) { |
| 354 auto tmp = _children[i]; | |
| 355 if(int result = dg(tmp)) | |
| 356 return result; | |
| 357 } | |
| 358 return 0; | |
| 359 } | |
| 58 | 360 /// ditto |
| 361 int opApply(int delegate(ref uint index, ref Control item) dg) { | |
| 0 | 362 for(uint i = 0; i < _children.count; ++i) { |
| 363 auto tmp = _children[i]; | |
| 364 if(int result = dg(i, tmp)) | |
| 365 return result; | |
| 366 } | |
| 367 return 0; | |
| 368 } | |
| 57 | 369 /** |
| 370 * Calls the specified delegate with each descendant of this container, for | |
| 371 * use with foreach. | |
| 372 * | |
| 373 * Example: | |
| 374 * ----- | |
| 375 * foreach(c; &container.descendants) { | |
| 376 * // do something with c | |
| 377 * } | |
| 378 * ----- | |
| 379 */ | |
| 380 int descendants(int delegate(ref Control item) dg) { | |
| 381 for(int i = 0; i < _children.count; ++i) { | |
| 382 auto tmp = _children[i]; | |
| 383 if(int result = dg(tmp)) | |
| 384 return result; | |
| 385 auto c = cast(Container)_children[i]; | |
| 386 if(c) | |
| 387 if(int result = c.descendants(dg)) | |
| 388 return result; | |
| 389 } | |
| 390 return 0; | |
| 391 } | |
| 392 /** | |
| 393 * Same as descendants(), but includes this container in addition to | |
| 394 * descendants. | |
| 395 */ | |
| 396 int descendantsPlus(int delegate(ref Control item) dg) { | |
| 397 Control tmp = this; | |
| 398 if(int result = dg(tmp)) | |
| 399 return result; | |
| 400 if(int result = descendants(dg)) | |
| 401 return result; | |
| 402 return 0; | |
| 403 } | |
| 0 | 404 } |
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405 unittest { |
| 57 | 406 int a = 0, r = 0; |
| 407 auto container1 = new Panel; | |
| 408 auto container2 = new Panel; | |
| 409 auto control1 = new Control; | |
| 410 auto control2 = new Control; | |
| 411 auto control3 = new Control; | |
| 412 container1.descendantAdded += (HierarchyEventArgs e) { a++; }; | |
| 413 container1.descendantRemoved += (HierarchyEventArgs e) { r++; }; | |
| 414 | |
| 415 container2.add(control2); | |
| 416 container2.children.add(control3); | |
| 417 assert(control3.parent == container2); | |
| 418 container1.add(control1); | |
| 419 assert(a == 1); // test descendantAdded | |
| 420 container1.add(container2); | |
| 421 assert(a == 4); // test descendantAdded | |
| 422 | |
| 423 // test Container.descendants | |
| 424 auto list = new List!(Control); | |
| 425 foreach(c; &container1.descendants) | |
| 426 list.add(c); | |
| 427 assert(list.data == [control1, container2, control2, control3]); | |
| 428 | |
| 429 list.clear(); | |
| 430 foreach(c; &container1.descendantsPlus) | |
| 431 list.add(c); | |
| 432 assert(list.data == [cast(Control)container1, control1, container2, | |
| 433 control2, control3]); | |
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434 } |
| 0 | 435 |
| 58 | 436 /// |
| 0 | 437 class Panel : Container { |
| 58 | 438 /// |
| 0 | 439 ControlList children() { return _children; } |
| 58 | 440 /// |
| 0 | 441 void add(Control child) { super.add(child); }; |
| 58 | 442 /// |
| 0 | 443 void remove(Control child) { super.remove(child); }; |
| 58 | 444 /// |
| 445 int opApply(int delegate(ref Control item) dg) { | |
| 0 | 446 return super.opApply(dg); |
| 447 } | |
| 58 | 448 /// |
| 449 int opApply(int delegate(ref uint index, ref Control item) dg) { | |
| 0 | 450 return super.opApply(dg); |
| 451 } | |
| 452 } | |
| 453 |