X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Felements%2FTextElementHandler.java;fp=bundles%2Forg.simantics.diagram%2Fsrc%2Forg%2Fsimantics%2Fdiagram%2Felements%2FTextElementHandler.java;h=2e9f1bf9f22810bfbde9d57a676b4357ebf36c45;hp=0000000000000000000000000000000000000000;hb=969bd23cab98a79ca9101af33334000879fb60c5;hpb=866dba5cd5a3929bbeae85991796acb212338a08

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/elements/TextElementHandler.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/elements/TextElementHandler.java
new file mode 100644
index 000000000..2e9f1bf9f
--- /dev/null
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/elements/TextElementHandler.java
@@ -0,0 +1,108 @@
+/*******************************************************************************
+ * 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.diagram.elements;
+
+import java.awt.Font;
+import java.awt.font.FontRenderContext;
+import java.awt.font.TextLayout;
+import java.awt.geom.AffineTransform;
+import java.awt.geom.Rectangle2D;
+
+import org.simantics.g2d.element.ElementHints;
+import org.simantics.g2d.element.ElementUtils;
+import org.simantics.g2d.element.IElement;
+import org.simantics.g2d.element.handler.InternalSize;
+import org.simantics.g2d.utils.Alignment;
+
+/**
+ * ElementHandler for text elements
+ * In-line editing supported.
+ * 
+ * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
+ */
+public class TextElementHandler extends TextElementNoBounds implements InternalSize {
+
+    private static final long serialVersionUID = 2560598115620905271L;
+
+    public static final TextElementHandler INSTANCE         = new TextElementHandler();
+
+    public TextElementHandler() {
+        super();
+    }
+
+    public TextElementHandler(double originX, double originY, Alignment horizontalAlignment) {
+        super(originX, originY, horizontalAlignment);
+    }
+
+    public TextElementHandler(double originX, double originY, Alignment horizontalAlignment, double borderWidth) {
+        super(originX, originY, horizontalAlignment, borderWidth);
+    }
+
+    public TextElementHandler(double originX, double originY, Alignment horizontalAlignment, double borderWidth,
+            double paddingX, double paddingY, boolean editable) {
+        super(originX, originY, horizontalAlignment, borderWidth, paddingX, paddingY, editable);
+    }
+    
+
+    @Override
+    public Rectangle2D getBounds(IElement e, Rectangle2D size) {
+        return calculateBounds(e, size, horizontalAlignment, SCALE, paddingX, paddingY);
+    }
+    
+    public static Rectangle2D calculateBounds(
+            IElement e,
+            Rectangle2D size, 
+            Alignment horizontalAlignment, 
+            double scale,
+            double paddingX,
+            double paddingY) {
+        
+        TextNode node = (TextNode) e.getHint(SG_NODE);
+        Rectangle2D b = e.getHint(ElementHints.KEY_BOUNDS);
+
+        if (size == null)
+            size = new Rectangle2D.Double();
+        if (node != null)
+            size.setRect(node.getBoundsInLocal());
+        else if(b != null && ElementUtils.getHintOrDefault(e, ElementHints.KEY_RESIZABLE, false))
+            size.setRect(b);
+        else {
+            String text = e.getHint(ElementHints.KEY_TEXT);
+            Font font = e.getHint(ElementHints.KEY_FONT);
+            if(text == null || font == null)
+                size.setFrame(0, 0, 0, 0);
+            else {
+                FontRenderContext FRC = new FontRenderContext(new AffineTransform(), true, true);
+                TextLayout tl = new TextLayout(text, font, FRC);
+                Rectangle2D bounds = tl.getLogicalHighlightShape(0, text.length()).getBounds2D();   
+                size.setFrame(
+                        getAlignedXCoordinate(bounds, horizontalAlignment) * scale - paddingX,
+                        bounds.getY() * scale -paddingY, 
+                        bounds.getWidth()* scale + paddingX + paddingX, 
+                        bounds.getHeight()* scale + paddingY + paddingY);
+            }
+        }
+        return size;
+        
+    }
+    
+    
+    public static double getAlignedXCoordinate(Rectangle2D bounds, Alignment horizontalAlignment) {
+        if(horizontalAlignment == Alignment.CENTER) {
+            return bounds.getX() - bounds.getWidth() / 2;
+        } else if(horizontalAlignment == Alignment.TRAILING) {
+            return - bounds.getWidth();
+        }
+        return bounds.getX();
+    }
+
+}
\ No newline at end of file