Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.trend / src / org / simantics / trend / impl / TextNode.java

diff --git a/bundles/org.simantics.trend/src/org/simantics/trend/impl/TextNode.java b/bundles/org.simantics.trend/src/org/simantics/trend/impl/TextNode.java
new file mode 100644 (file)
index 0000000..6a4026f
--- /dev/null
+++ b/bundles/org.simantics.trend/src/org/simantics/trend/impl/TextNode.java
@@ -0,0 +1,115 @@
+/*******************************************************************************\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.trend.impl;
+
+import java.awt.Color;\r
+import java.awt.Font;\r
+import java.awt.Graphics2D;\r
+import java.awt.font.GlyphVector;\r
+import java.awt.geom.AffineTransform;\r
+import java.awt.geom.Rectangle2D;\r
+\r
+import org.simantics.g2d.utils.GridUtil;\r
+import org.simantics.scenegraph.ExportableWidget.OutputWidget;\r
+\r
+/**\r
+ * TextNode, the text is centered and scaled to fit inside the bounds.\r
+ *\r
+ * @author toni.kalajainen\r
+ */\r
+@OutputWidget("text")
+public class TextNode extends TrendGraphicalNode {
+
+    private static final long serialVersionUID = 8508750881358776559L;\r
+\r
+    String      text   = null;\r
+    Font        font   = null;\r
+    Color       color  = Color.BLACK;\r
+    \r
+    transient double sx, sy, tw, th, tx, ty;\r
+\r
+    @SyncField("font")\r
+    public void setFont(Font font) {\r
+        this.font = font;\r
+    }\r
+    \r
+    @SyncField("text")\r
+    public void setText(String text) {\r
+        this.text = text;\r
+    }\r
+    \r
+    @SyncField("color")\r
+    public void setColor(Color color) {\r
+        this.color = color;\r
+    }\r
+    \r
+    public void layout() {\r
+               GlyphVector glyphVector = font.createGlyphVector(GridUtil.frc, text);\r
+       Rectangle2D tr = glyphVector.getVisualBounds().getBounds2D();\r
+       tw = tr.getWidth();\r
+       th = tr.getHeight();\r
+       sx = getWidth() / tw;\r
+       sy = getHeight() / th;\r
+       tx = -tr.getX();\r
+       ty = -tr.getY();\r
+       \r
+       // Fix horiz scale param sx\r
+       if (sx<1.0) {\r
+               // Text is too wide\r
+               // Scale-down to fit rectangle width\r
+               tw *= sx;\r
+               th *= sx;\r
+               sy *= sx;\r
+               tx *= sx;\r
+               ty *= sx;\r
+       } else {\r
+               // Text is ok horizontally. No need to scale.\r
+               sx = 1.0;\r
+       }\r
+       \r
+       // Fix vert scale param sy\r
+       if (sy<1.0) {\r
+               // Text is too tall\r
+               // Scale-down to fit rectangle height\r
+               tw *= sy;\r
+               th *= sy;\r
+               sx *= sy;\r
+               tx *= sy;\r
+               ty *= sy;\r
+       } else {\r
+               // Text is ok vertically. No need to scale.\r
+               sy = 1.0;\r
+       }\r
+       \r
+        tx += (bounds.getWidth() - tw) / 2;\r
+        ty += (bounds.getHeight() - th) / 2;           \r
+    }\r
+\r
+       @Override\r
+       protected void doRender(Graphics2D g) {\r
+        if (text == null || bounds == null || font == null || color == null)\r
+            return;\r
+\r
+        g.setFont(font);\r
+        g.setColor(color);\r
+        \r
+        AffineTransform at = g.getTransform();\r
+        \r
+        g.translate( bounds.getX(), bounds.getY() );\r
+        g.translate(tx, ty);\r
+        g.scale(sx, sy);\r
+\r
+        g.drawString(text, 0, 0);\r
+        g.setTransform( at );\r
+       }    \r
+    
+}