-/*******************************************************************************\r
- * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
- * in Industry THTH ry.\r
- * All rights reserved. This program and the accompanying materials\r
- * are made available under the terms of the Eclipse Public License v1.0\r
- * which accompanies this distribution, and is available at\r
- * http://www.eclipse.org/legal/epl-v10.html\r
- *\r
- * Contributors:\r
- * VTT Technical Research Centre of Finland - initial API and implementation\r
- *******************************************************************************/\r
-package org.simantics.g2d.diagram.handler.layout;\r
-\r
-import java.awt.geom.Rectangle2D;\r
-import java.util.ArrayList;\r
-import java.util.Collection;\r
-import java.util.List;\r
-import java.util.Map;\r
-import java.util.Map.Entry;\r
-\r
-import org.simantics.g2d.diagram.IDiagram;\r
-import org.simantics.g2d.diagram.handler.LayoutManager;\r
-import org.simantics.g2d.element.ElementUtils;\r
-import org.simantics.g2d.element.IElement;\r
-import org.simantics.utils.datastructures.hints.IHintContext.Key;\r
-import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;\r
-\r
-public class FlowLayout implements LayoutManager {\r
-\r
- /** Diagram hint, Row justification */\r
- public static enum Align {Left, Center, Right, Fill}\r
-\r
- /**\r
- * The align specifies the alignment of elements\r
- * in a row.\r
- */\r
- public static final Key ALIGN = new KeyOf(Align.class, "FlowLayout.ALIGN");\r
-\r
- /**\r
- * The horizontal gap specifies the space between\r
- * elements and between an element and borders.\r
- */\r
- public static final Key HGAP = new KeyOf(Double.class, "FlowLayout.HGAP");\r
-\r
- /**\r
- * The vertical gap specifies the space between\r
- * elements and between an element and borders.\r
- */\r
- public static final Key VGAP = new KeyOf(Double.class, "FlowLayout.VGAP");\r
-\r
- @Override\r
- public void layout(IDiagram diagram, Rectangle2D bounds) {\r
- Align align = diagram.getHint(ALIGN);\r
- Double hgap = diagram.getHint(HGAP);\r
- Double vgap = diagram.getHint(VGAP);\r
- if (align==null) align = Align.Left;\r
- if (hgap==null) hgap = 0.;\r
- if (vgap==null) vgap = 0.;\r
-\r
- Map<IElement, Rectangle2D> pos = computePositions(diagram, bounds, align, hgap, vgap);\r
- for (Entry<IElement, Rectangle2D> e : pos.entrySet()) {\r
- ElementUtils.setPos(e.getKey(), e.getValue().getMinX(), e.getValue().getMinY());\r
- }\r
- }\r
-\r
- @Override\r
- public Rectangle2D computeSize(IDiagram diagram, Double wHint, Double hHint)\r
- {\r
- Rectangle2D bounds = new Rectangle2D.Double();\r
- Align align = diagram.getHint(ALIGN);\r
- Double hgap = diagram.getHint(HGAP);\r
- Double vgap = diagram.getHint(VGAP);\r
- if (align==null) align = Align.Left;\r
- if (hgap==null) hgap = 0.;\r
- if (vgap==null) vgap = 0.;\r
-\r
- if (wHint==null) wHint = Double.MAX_VALUE;\r
- if (hHint==null) hHint = Double.MAX_VALUE;\r
-\r
- bounds.setFrame(0, 0, wHint, hHint);\r
-\r
- Map<IElement, Rectangle2D> pos = computePositions(diagram, bounds, align, hgap, vgap);\r
- double minX = Double.MAX_VALUE, minY = Double.MAX_VALUE, maxX = -Double.MAX_VALUE, maxY = -Double.MAX_VALUE;\r
- for (IElement e : pos.keySet()) {\r
- Rectangle2D b = pos.get(e);\r
- if (b.getMinX() < minX) minX = b.getMinX();\r
- if (b.getMinY() < minY) minY = b.getMinY();\r
- if (b.getMaxX() > maxX) maxX = b.getMaxX();\r
- if (b.getMaxY() > maxY) maxY = b.getMaxY();\r
- }\r
-\r
- return new Rectangle2D.Double(minX, minY, maxX-minX, maxY-minY);\r
- }\r
-\r
- private Map<IElement, Rectangle2D> computePositions(IDiagram diagram, Rectangle2D bounds, Align align, double hgap, double vgap)\r
- {\r
- double width = bounds.getWidth();\r
-\r
- // Must use diagram.getSnapshot since we are not guaranteed to be in the\r
- // diagram's canvas context thread.\r
- Collection<IElement> elements = diagram.getSnapshot();\r
- Map<IElement, Rectangle2D> rects = ElementUtils.getElementBoundsOnDiagram(elements, null);\r
-\r
- // Rows\r
- List<List<IElement>> rows = new ArrayList<List<IElement>>();\r
-\r
- // Divide elements to rows\r
- List<IElement> row = new ArrayList<IElement>();\r
- rows.add(row);\r
- double rowWidth = 0.0;\r
- for (IElement e : elements)\r
- {\r
- Rectangle2D elementBounds = rects.get(e);\r
-\r
- if (row.isEmpty()) {\r
- row.add(e);\r
- rowWidth += elementBounds.getWidth();\r
- continue;\r
- }\r
-\r
- // Add element if it fits to the row\r
- if (rowWidth + elementBounds.getWidth() + hgap*(row.size()) < width)\r
- {\r
- rowWidth += elementBounds.getWidth();\r
- row.add(e);\r
- continue;\r
- }\r
-\r
- // Create a new row\r
- rows.add( row = new ArrayList<IElement>() );\r
- row.add(e);\r
- rowWidth = elementBounds.getWidth();\r
- }\r
-\r
- // Flush rows\r
- double y = bounds.getMinY();\r
- double hmargin = hgap;\r
- for (List<IElement> row_ : rows) {\r
- double rowHeight = 0;\r
-\r
- // Calc row width\r
- double rowContentWidth = (row.size()-1) * hgap;\r
- for (IElement e : row)\r
- rowContentWidth += rects.get(e).getWidth();\r
-\r
- double x = hgap + bounds.getMinX();\r
- double _hgap = hgap;\r
- if (align == Align.Center) x = (width - hmargin - hmargin - rowContentWidth) / 2;\r
- if (align == Align.Left) x = hmargin;\r
- if (align == Align.Right) x = width-rowContentWidth-hmargin;\r
- if (align == Align.Fill) {\r
- x = hmargin;\r
- _hgap = (width - hmargin - hmargin - rowContentWidth) / (row.size()+1);\r
- //_hgap = 2;\r
- }\r
- for (IElement e : row_) {\r
- Rectangle2D rect = rects.get(e);\r
- rect.setFrame(x, y, rect.getWidth(), rect.getHeight());\r
- x += rect.getWidth() + _hgap;\r
- rowHeight = Math.max(rowHeight, rect.getHeight());\r
- }\r
-\r
- x = bounds.getMinX();\r
- y += rowHeight + vgap;\r
- }\r
-\r
- return rects;\r
- }\r
-\r
-\r
-}\r
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ * VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.g2d.diagram.handler.layout;
+
+import java.awt.geom.Rectangle2D;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import org.simantics.g2d.diagram.IDiagram;
+import org.simantics.g2d.diagram.handler.LayoutManager;
+import org.simantics.g2d.element.ElementUtils;
+import org.simantics.g2d.element.IElement;
+import org.simantics.utils.datastructures.hints.IHintContext.Key;
+import org.simantics.utils.datastructures.hints.IHintContext.KeyOf;
+
+public class FlowLayout implements LayoutManager {
+
+ /** Diagram hint, Row justification */
+ public static enum Align {Left, Center, Right, Fill}
+
+ /**
+ * The align specifies the alignment of elements
+ * in a row.
+ */
+ public static final Key ALIGN = new KeyOf(Align.class, "FlowLayout.ALIGN");
+
+ /**
+ * The horizontal gap specifies the space between
+ * elements and between an element and borders.
+ */
+ public static final Key HGAP = new KeyOf(Double.class, "FlowLayout.HGAP");
+
+ /**
+ * The vertical gap specifies the space between
+ * elements and between an element and borders.
+ */
+ public static final Key VGAP = new KeyOf(Double.class, "FlowLayout.VGAP");
+
+ @Override
+ public void layout(IDiagram diagram, Rectangle2D bounds) {
+ Align align = diagram.getHint(ALIGN);
+ Double hgap = diagram.getHint(HGAP);
+ Double vgap = diagram.getHint(VGAP);
+ if (align==null) align = Align.Left;
+ if (hgap==null) hgap = 0.;
+ if (vgap==null) vgap = 0.;
+
+ Map<IElement, Rectangle2D> pos = computePositions(diagram, bounds, align, hgap, vgap);
+ for (Entry<IElement, Rectangle2D> e : pos.entrySet()) {
+ ElementUtils.setPos(e.getKey(), e.getValue().getMinX(), e.getValue().getMinY());
+ }
+ }
+
+ @Override
+ public Rectangle2D computeSize(IDiagram diagram, Double wHint, Double hHint)
+ {
+ Rectangle2D bounds = new Rectangle2D.Double();
+ Align align = diagram.getHint(ALIGN);
+ Double hgap = diagram.getHint(HGAP);
+ Double vgap = diagram.getHint(VGAP);
+ if (align==null) align = Align.Left;
+ if (hgap==null) hgap = 0.;
+ if (vgap==null) vgap = 0.;
+
+ if (wHint==null) wHint = Double.MAX_VALUE;
+ if (hHint==null) hHint = Double.MAX_VALUE;
+
+ bounds.setFrame(0, 0, wHint, hHint);
+
+ Map<IElement, Rectangle2D> pos = computePositions(diagram, bounds, align, hgap, vgap);
+ double minX = Double.MAX_VALUE, minY = Double.MAX_VALUE, maxX = -Double.MAX_VALUE, maxY = -Double.MAX_VALUE;
+ for (IElement e : pos.keySet()) {
+ Rectangle2D b = pos.get(e);
+ if (b.getMinX() < minX) minX = b.getMinX();
+ if (b.getMinY() < minY) minY = b.getMinY();
+ if (b.getMaxX() > maxX) maxX = b.getMaxX();
+ if (b.getMaxY() > maxY) maxY = b.getMaxY();
+ }
+
+ return new Rectangle2D.Double(minX, minY, maxX-minX, maxY-minY);
+ }
+
+ private Map<IElement, Rectangle2D> computePositions(IDiagram diagram, Rectangle2D bounds, Align align, double hgap, double vgap)
+ {
+ double width = bounds.getWidth();
+
+ // Must use diagram.getSnapshot since we are not guaranteed to be in the
+ // diagram's canvas context thread.
+ Collection<IElement> elements = diagram.getSnapshot();
+ Map<IElement, Rectangle2D> rects = ElementUtils.getElementBoundsOnDiagram(elements, null);
+
+ // Rows
+ List<List<IElement>> rows = new ArrayList<List<IElement>>();
+
+ // Divide elements to rows
+ List<IElement> row = new ArrayList<IElement>();
+ rows.add(row);
+ double rowWidth = 0.0;
+ for (IElement e : elements)
+ {
+ Rectangle2D elementBounds = rects.get(e);
+
+ if (row.isEmpty()) {
+ row.add(e);
+ rowWidth += elementBounds.getWidth();
+ continue;
+ }
+
+ // Add element if it fits to the row
+ if (rowWidth + elementBounds.getWidth() + hgap*(row.size()) < width)
+ {
+ rowWidth += elementBounds.getWidth();
+ row.add(e);
+ continue;
+ }
+
+ // Create a new row
+ rows.add( row = new ArrayList<IElement>() );
+ row.add(e);
+ rowWidth = elementBounds.getWidth();
+ }
+
+ // Flush rows
+ double y = bounds.getMinY();
+ double hmargin = hgap;
+ for (List<IElement> row_ : rows) {
+ double rowHeight = 0;
+
+ // Calc row width
+ double rowContentWidth = (row.size()-1) * hgap;
+ for (IElement e : row)
+ rowContentWidth += rects.get(e).getWidth();
+
+ double x = hgap + bounds.getMinX();
+ double _hgap = hgap;
+ if (align == Align.Center) x = (width - hmargin - hmargin - rowContentWidth) / 2;
+ if (align == Align.Left) x = hmargin;
+ if (align == Align.Right) x = width-rowContentWidth-hmargin;
+ if (align == Align.Fill) {
+ x = hmargin;
+ _hgap = (width - hmargin - hmargin - rowContentWidth) / (row.size()+1);
+ //_hgap = 2;
+ }
+ for (IElement e : row_) {
+ Rectangle2D rect = rects.get(e);
+ rect.setFrame(x, y, rect.getWidth(), rect.getHeight());
+ x += rect.getWidth() + _hgap;
+ rowHeight = Math.max(rowHeight, rect.getHeight());
+ }
+
+ x = bounds.getMinX();
+ y += rowHeight + vgap;
+ }
+
+ return rects;
+ }
+
+
+}
Code Review / simantics / platform.git / blobdiff