bundles/org.simantics.g2d/src/org/simantics/g2d/elementclass/button/ToggleButtonClass.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.g2d.elementclass.button;\r
  13 \r
  14 import java.awt.AlphaComposite;\r
  15 import java.awt.Font;\r
  16 import java.awt.FontMetrics;\r
  17 import java.awt.Graphics2D;\r
  18 import java.awt.geom.Line2D;\r
  19 import java.awt.geom.Rectangle2D;\r
  20 \r
  21 import org.simantics.g2d.element.ElementClass;\r
  22 import org.simantics.g2d.element.ElementHints;\r
  23 import org.simantics.g2d.element.ElementUtils;\r
  24 import org.simantics.g2d.element.IElement;\r
  25 import org.simantics.g2d.element.SceneGraphNodeKey;\r
  26 import org.simantics.g2d.element.handler.Clickable.PressStatus;\r
  27 import org.simantics.g2d.element.handler.SceneGraph;\r
  28 import org.simantics.g2d.element.handler.Stateful;\r
  29 import org.simantics.g2d.element.handler.Text;\r
  30 import org.simantics.g2d.element.handler.Togglable;\r
  31 import org.simantics.g2d.element.handler.impl.AbstractClickable;\r
  32 import org.simantics.g2d.element.handler.impl.AbstractTogglable;\r
  33 import org.simantics.g2d.element.handler.impl.DefaultTransform;\r
  34 import org.simantics.g2d.element.handler.impl.Resizeable;\r
  35 import org.simantics.scenegraph.Node;\r
  36 import org.simantics.scenegraph.g2d.G2DNode;\r
  37 import org.simantics.scenegraph.g2d.G2DParentNode;\r
  38 import org.simantics.utils.datastructures.hints.HintListenerAdapter;\r
  39 import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
  40 import org.simantics.utils.datastructures.hints.IHintObservable;\r
  41 \r
  42 public class ToggleButtonClass {\r
  43 \r
  44     public static final ElementClass BUTTON_CLASS =\r
  45         ElementClass.compile(\r
  46                 Togglable.INSTANCE,\r
  47                 Text.INSTANCE,\r
  48                 Resizeable.UNCONSTRICTED,\r
  49                 DefaultTransform.INSTANCE,\r
  50                 ToggleButtonPaint.INSTANCE,\r
  51                 Stateful.ENABLED_BY_DEFAULT\r
  52         );\r
  53     \r
  54 \r
  55 \r
  56     static class ToggleButtonPaint implements SceneGraph {\r
  57         private static final long serialVersionUID = 1114908644204400590L;\r
  58         public static final ToggleButtonPaint INSTANCE = new ToggleButtonPaint();\r
  59 \r
  60         public static final Key SG_NODE = new SceneGraphNodeKey(Node.class, "SUB_SG_NODE");\r
  61 \r
  62         \r
  63         @Override\r
  64         public void cleanup(IElement e) {\r
  65             Node node = e.removeHint(SG_NODE);\r
  66             if (node != null)\r
  67                 node.remove();\r
  68         }\r
  69 \r
  70         @Override\r
  71         public void init(IElement e, G2DParentNode parent) {\r
  72             ToggleButtonNode node = (ToggleButtonNode) e.getHint(SG_NODE);\r
  73             if (node == null) {\r
  74                 node = parent.addNode(ToggleButtonNode.class);\r
  75                 e.setHint(SG_NODE, node);\r
  76                 e.addKeyHintListener(AbstractTogglable.TOGGLE_KEY, new HintListenerAdapter() {\r
  77                                 \r
  78                                 @Override\r
  79                                 public void hintChanged(IHintObservable sender, Key key, Object oldValue,\r
  80                                                 Object newValue) {\r
  81                                         if (sender instanceof IElement) {\r
  82                                                 ToggleButtonNode node = (ToggleButtonNode) ((IElement)sender).getHint(SG_NODE);\r
  83                                                 node.setToggle((Boolean)newValue);\r
  84                                                 node.repaint();\r
  85                                         }\r
  86                                 }\r
  87                         });\r
  88                 e.addKeyHintListener(ElementHints.KEY_TEXT, new HintListenerAdapter() {\r
  89                                 \r
  90                                 @Override\r
  91                                 public void hintChanged(IHintObservable sender, Key key, Object oldValue,\r
  92                                                 Object newValue) {\r
  93                                         if (sender instanceof IElement) {\r
  94                                                 ToggleButtonNode node = (ToggleButtonNode) ((IElement)sender).getHint(SG_NODE);\r
  95                                                 node.buttonText = (String)newValue;\r
  96                                                 node.repaint();\r
  97                                         }\r
  98                                         \r
  99                                 }\r
 100                         });\r
 101                 e.addKeyHintListener(AbstractClickable.PRESS_STATUS_KEY, new HintListenerAdapter() {\r
 102                                         \r
 103                                         @Override\r
 104                                         public void hintChanged(IHintObservable sender, Key key, Object oldValue,\r
 105                                                         Object newValue) {\r
 106                                                 if (sender instanceof IElement) {\r
 107                                                         ToggleButtonNode node = (ToggleButtonNode) ((IElement)sender).getHint(SG_NODE);\r
 108                                                         node.status = (PressStatus)newValue;\r
 109                                                         node.repaint();\r
 110                                                 }\r
 111                                         }\r
 112                                 });\r
 113             }\r
 114 \r
 115             Rectangle2D                 rect = ElementUtils.getElementBounds(e);\r
 116             ButtonColorProfile  colors = ButtonColorProfile.DEFAULT;\r
 117             double                              height = rect.getHeight();\r
 118             boolean                             enabled = isEnabled(e);\r
 119 \r
 120             // FIXME: context not supported by scenegraph\r
 121             PressStatus                 status = PressStatus.NORMAL;//ElementUtils.getPressStatus(e, ctx);\r
 122 \r
 123             Font                                font = new Font("Tahoma", 0, (int) height-6);\r
 124             Font                                selFont = new Font("Tahoma", Font.BOLD, (int) height-6);\r
 125             Text                                text = e.getElementClass().getAtMostOneItemOfClass(Text.class);\r
 126             String                              buttonText = null;\r
 127             if (text!=null) buttonText = text.getText(e);\r
 128             if (buttonText==null) buttonText = "";\r
 129             boolean checked = isChecked(e);\r
 130 \r
 131             System.out.println("ToggleButtonClass.init " + e + " " + status + " " + checked);\r
 132             node.init(status, rect, enabled, checked, colors, font, selFont, buttonText);\r
 133             \r
 134 //            e.addKeyHintListener(AbstractClickable.PRESS_STATUS_KEY, new HintListenerAdapter() {\r
 135 //                              \r
 136 //                              @Override\r
 137 //                              public void hintChanged(IHintObservable sender, Key key, Object oldValue,\r
 138 //                                              Object newValue) {\r
 139 //                                      if (sender instanceof IElement) {\r
 140 //                                              ToggleButtonNode node = (ToggleButtonNode) ((IElement)sender).getHint(SG_NODE);\r
 141 //                                              node.setPressStatus((PressStatus)newValue);\r
 142 //                                              node.repaint();\r
 143 //                                      }\r
 144 //                              }\r
 145 //                      });\r
 146             \r
 147         }\r
 148 \r
 149         public static class ToggleButtonNode extends G2DNode {\r
 150             /**\r
 151              * \r
 152              */\r
 153             private static final long serialVersionUID = -7968142805282971747L;\r
 154 \r
 155             PressStatus status = null;\r
 156             Rectangle2D rect = null;\r
 157             Boolean enabled = null;\r
 158             Boolean checked = null;\r
 159             ButtonColorProfile colors = null;\r
 160             Font font = null;\r
 161             Font selFont = null;\r
 162             String buttonText = null;\r
 163             boolean toggle = false;\r
 164 \r
 165             @Override\r
 166             public Rectangle2D getBoundsInLocal() {\r
 167                 return rect;\r
 168             }\r
 169             \r
 170             @SyncField("pressStatus") void setPressStatus(PressStatus pressStatus) { \r
 171                 this.status = pressStatus; \r
 172             }\r
 173             \r
 174             @SyncField("toggle") void setToggle(Boolean toggle) { \r
 175                 this.checked = toggle; \r
 176             }\r
 177 \r
 178             public void init(PressStatus status, Rectangle2D rect, boolean enabled, boolean checked,\r
 179                     ButtonColorProfile colors, Font font, Font selFont, String buttonText) {\r
 180                 this.status = status;\r
 181                 this.rect = rect;\r
 182                 this.enabled = enabled;\r
 183                 this.checked = checked;\r
 184                 this.colors = colors;\r
 185                 this.font = font;\r
 186                 this.selFont = selFont;\r
 187                 this.buttonText = buttonText;\r
 188             }\r
 189 \r
 190             @Override\r
 191             public void render(Graphics2D g) {\r
 192                  switch (status) {\r
 193                     case NORMAL:\r
 194                         drawNormal(g, rect, enabled, checked, colors, font, selFont, buttonText);\r
 195                         break;\r
 196                     case HELD:\r
 197                         drawHeld(g, rect, enabled, colors, font, selFont, buttonText);\r
 198                         break;\r
 199                     case PRESSED:\r
 200                         drawPressed(g, rect, enabled, colors, font, selFont, buttonText);\r
 201                         break;\r
 202                     case HOVER:\r
 203                         drawHover(g, rect, enabled, colors, font, selFont, buttonText);\r
 204                         break;\r
 205                 }\r
 206             }\r
 207 \r
 208             protected void drawNormal(Graphics2D g, Rectangle2D rect, boolean enabled, boolean checked, ButtonColorProfile colors, Font font, Font selectedFont, String text)\r
 209             {\r
 210                 if(checked) {\r
 211                     drawPressed(g, rect, enabled, colors, font, selectedFont, text);\r
 212                     return;\r
 213                 }\r
 214                 g.translate(rect.getX(), rect.getY());\r
 215                 double width = rect.getWidth();\r
 216                 double height = rect.getHeight();\r
 217 \r
 218                 g.setColor(colors.BACKGROUND);\r
 219                 g.fill(new Rectangle2D.Double(0, 0, width-1, height-1));\r
 220 \r
 221                 g.setColor(colors.BORDER1);\r
 222                 Line2D line = new Line2D.Double();\r
 223                 line.setLine(0, 0, width-1, 0);         g.draw(line);\r
 224                 line.setLine(0, 0, 0, height-1);        g.draw(line);\r
 225 \r
 226                 g.setColor(colors.BORDER2);\r
 227                 line.setLine(1, height-2, width-2, height-2);   g.draw(line);\r
 228                 line.setLine(width-2, height-2, width-2, 1);    g.draw(line);\r
 229 \r
 230                 g.setColor(colors.BORDER3);\r
 231                 line.setLine(0, height-1, width-1, height-1);   g.draw(line);\r
 232                 line.setLine(width-1, height-1, width-1, 0);    g.draw(line);\r
 233 \r
 234                 if (enabled) {\r
 235                     g.setColor(colors.TEXT_BLACK);\r
 236                     FontMetrics fm = g.getFontMetrics(font);\r
 237                     Rectangle2D clipRect = new Rectangle2D.Double(2, 2, width-4, height-4);\r
 238                     g.clip(clipRect);\r
 239                     g.setFont(font);\r
 240                     Rectangle2D stringRect = fm.getStringBounds(text, g);\r
 241                     float x = ((float)((width - 4) / 2)) - ((float)stringRect.getWidth()) / 2;\r
 242                     g.drawString(text, x, (float)height-6);\r
 243                 } else {\r
 244                     Rectangle2D clipRect = new Rectangle2D.Double(2, 2, width-4, height-4);\r
 245                     g.clip(clipRect);\r
 246                     g.setFont(selectedFont);\r
 247 \r
 248                     FontMetrics fm = g.getFontMetrics(selectedFont);\r
 249                     Rectangle2D stringRect = fm.getStringBounds(text, g);\r
 250                     float x = ((float)((width - 4) / 2)) - ((float)stringRect.getWidth()) / 2;\r
 251 \r
 252                     g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5f));\r
 253                     g.setColor(colors.TEXT_WHITE);\r
 254                     g.drawString(text, x+1, (float)height-6+1);\r
 255 \r
 256                     g.setColor(colors.TEXT_BLACK);\r
 257                     g.drawString(text, x, (float)height-6);\r
 258                 }\r
 259             }\r
 260 \r
 261             protected void drawHeld(Graphics2D g, Rectangle2D rect, boolean enabled, ButtonColorProfile colors, Font font, Font selectedFont, String text)\r
 262             {\r
 263                 g.translate(rect.getX(), rect.getY());\r
 264                 double width = rect.getWidth();\r
 265                 double height = rect.getHeight();\r
 266 \r
 267                 g.setColor(colors.BACKGROUND);\r
 268                 g.fill(new Rectangle2D.Double(0, 0, width-1, height-1));\r
 269 \r
 270                 Line2D line = new Line2D.Double();\r
 271 \r
 272                 g.setColor(colors.BORDER3);\r
 273                 line.setLine(0, 0, width-2, 0); g.draw(line);\r
 274                 line.setLine(0, 0, 0, height-2); g.draw(line);\r
 275 \r
 276                 g.setColor(colors.BORDER2);\r
 277                 line.setLine(1, 1, width-3, 1); g.draw(line);\r
 278                 line.setLine(1, 1, 1, height-3); g.draw(line);\r
 279 \r
 280                 g.setColor(colors.BORDER1);\r
 281                 line.setLine(0, height-1, width-1, height-1); g.draw(line);\r
 282                 line.setLine(width-1, height-1, width-1, 0); g.draw(line);\r
 283 \r
 284                 g.setColor(colors.TEXT_BLACK);\r
 285                 FontMetrics fm = g.getFontMetrics(font);\r
 286                 Rectangle2D clipRect = new Rectangle2D.Double(2, 2, width-4, height-4);\r
 287                 g.clip(clipRect);\r
 288                 g.setFont(font);\r
 289                 Rectangle2D     stringRect = fm.getStringBounds(text, g);\r
 290                 float x = ((float)((width - 4) / 2)) - ((float)stringRect.getWidth()) / 2;\r
 291                 g.drawString(text, x+1, (float)height-6+1);\r
 292             }\r
 293 \r
 294 \r
 295             protected void drawPressed(Graphics2D g, Rectangle2D rect, boolean enabled, ButtonColorProfile colors, Font font, Font selectedFont, String text)\r
 296             {\r
 297                 g.translate(rect.getX(), rect.getY());\r
 298                 double width = rect.getWidth();\r
 299                 double height = rect.getHeight();\r
 300 \r
 301                 g.setColor(colors.SELECTEDBACKGROUND);\r
 302                 g.fill(new Rectangle2D.Double(0, 0, width-1, height-1));\r
 303 \r
 304                 Line2D line = new Line2D.Double();\r
 305 \r
 306                 g.setColor(colors.BORDER3);\r
 307                 line.setLine(0, 0, width-2, 0); g.draw(line);\r
 308                 line.setLine(0, 0, 0, height-2); g.draw(line);\r
 309 \r
 310                 g.setColor(colors.BORDER2);\r
 311                 line.setLine(1, 1, width-3, 1); g.draw(line);\r
 312                 line.setLine(1, 1, 1, height-3); g.draw(line);\r
 313 \r
 314                 g.setColor(colors.BORDER1);\r
 315                 line.setLine(0, height-1, width-1, height-1); g.draw(line);\r
 316                 line.setLine(width-1, height-1, width-1, 0); g.draw(line);\r
 317 \r
 318                 if (enabled) {\r
 319                     g.setColor(colors.TEXT_BLACK);\r
 320 \r
 321                     FontMetrics fm = g.getFontMetrics(font);\r
 322                     Rectangle2D clipRect = new Rectangle2D.Double(2, 2, width-4, height-4);\r
 323                     g.clip(clipRect);\r
 324                     g.setFont(font);\r
 325                     Rectangle2D stringRect = fm.getStringBounds(text, g);\r
 326                     float x = ((float)((width - 4) / 2)) - ((float)stringRect.getWidth()) / 2;\r
 327                     g.drawString(text, x+1, (float)height-6+1);\r
 328                 } else {\r
 329                     Rectangle2D clipRect = new Rectangle2D.Double(2, 2, width-4, height-4);\r
 330                     g.clip(clipRect);\r
 331                     g.setFont(selectedFont);\r
 332 \r
 333                     FontMetrics fm = g.getFontMetrics(selectedFont);\r
 334                     Rectangle2D stringRect = fm.getStringBounds(text, g);\r
 335                     float x = ((float)((width - 4) / 2)) - ((float)stringRect.getWidth()) / 2;\r
 336 \r
 337                     g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5f));\r
 338                     g.setColor(colors.TEXT_WHITE);\r
 339                     g.drawString(text, x+2, (float)height-6+2);\r
 340 \r
 341                     g.setColor(colors.TEXT_BLACK);\r
 342                     g.drawString(text, x+1, (float)height-6+1);\r
 343                 }\r
 344 \r
 345             }\r
 346 \r
 347             protected void drawHover(Graphics2D g, Rectangle2D rect, boolean enabled, ButtonColorProfile colors, Font font, Font selectedFont, String text)\r
 348             {\r
 349                 if(checked) {\r
 350                     drawPressed(g, rect, enabled, colors, font, selectedFont, text);\r
 351                     return;\r
 352                 }\r
 353                 g.translate(rect.getX(), rect.getY());\r
 354                 double width = rect.getWidth();\r
 355                 double height = rect.getHeight();\r
 356 \r
 357                 g.setColor(colors.HOVERBACKGROUND);\r
 358                 g.fill(new Rectangle2D.Double(0, 0, width-1, height-1));\r
 359 \r
 360                 //g.setStroke(HOVER_STROKE);\r
 361 \r
 362                 g.setColor(colors.BORDER1);\r
 363                 Line2D line = new Line2D.Double();\r
 364                 line.setLine(0, 0, width-1, 0);         g.draw(line);\r
 365                 line.setLine(0, 0, 0, height-1);        g.draw(line);\r
 366 \r
 367                 g.setColor(colors.BORDER2);\r
 368                 line.setLine(1, height-2, width-2, height-2);   g.draw(line);\r
 369                 line.setLine(width-2, height-2, width-2, 1);    g.draw(line);\r
 370 \r
 371                 g.setColor(colors.BORDER3);\r
 372                 line.setLine(0, height-1, width-1, height-1);   g.draw(line);\r
 373                 line.setLine(width-1, height-1, width-1, 0);    g.draw(line);\r
 374 \r
 375                 if (enabled) {\r
 376                     g.setColor(colors.TEXT_BLACK);\r
 377                     FontMetrics fm = g.getFontMetrics(font);\r
 378                     Rectangle2D clipRect = new Rectangle2D.Double(2, 2, width-4, height-4);\r
 379                     g.clip(clipRect);\r
 380                     g.setFont(font);\r
 381                     Rectangle2D stringRect = fm.getStringBounds(text, g);\r
 382                     float x = ((float)((width - 4) / 2)) - ((float)stringRect.getWidth()) / 2;\r
 383                     g.drawString(text, x, (float)height-6);\r
 384                 } else {\r
 385                     Rectangle2D clipRect = new Rectangle2D.Double(2, 2, width-4, height-4);\r
 386                     g.clip(clipRect);\r
 387                     g.setFont(selectedFont);\r
 388 \r
 389                     FontMetrics fm = g.getFontMetrics(selectedFont);\r
 390                     Rectangle2D stringRect = fm.getStringBounds(text, g);\r
 391                     float x = ((float)((width - 4) / 2)) - ((float)stringRect.getWidth()) / 2;\r
 392 \r
 393                     g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5f));\r
 394                     g.setColor(colors.TEXT_WHITE);\r
 395                     g.drawString(text, x+1, (float)height-6+1);\r
 396 \r
 397                     g.setColor(colors.TEXT_BLACK);\r
 398                     g.drawString(text, x, (float)height-6);\r
 399                 }\r
 400             }\r
 401 \r
 402         }\r
 403 \r
 404         protected ButtonColorProfile getColorProfile(IElement e)\r
 405         {\r
 406             return ButtonColorProfile.DEFAULT;\r
 407         }\r
 408 \r
 409         protected boolean isToggleButton()\r
 410         {\r
 411             return false;\r
 412         }\r
 413 \r
 414         public boolean isEnabled(IElement e) {\r
 415             Stateful enabled = e.getElementClass().getAtMostOneItemOfClass(Stateful.class);\r
 416             if (enabled==null) return true;\r
 417             return enabled.isEnabled(e);\r
 418         }\r
 419 \r
 420         public boolean isChecked(IElement e){\r
 421             Boolean b = e.getHint(AbstractTogglable.TOGGLE_KEY);\r
 422             if (b == null)\r
 423                 return false;\r
 424             return b;\r
 425         }\r
 426     }\r
 427 }\r