Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.diagram / src / org / simantics / diagram / elements / Line.java

diff --git a/bundles/org.simantics.diagram/src/org/simantics/diagram/elements/Line.java b/bundles/org.simantics.diagram/src/org/simantics/diagram/elements/Line.java
new file mode 100644 (file)
index 0000000..dd428b7
--- /dev/null
+++ b/bundles/org.simantics.diagram/src/org/simantics/diagram/elements/Line.java
@@ -0,0 +1,132 @@
+/*******************************************************************************\r
+ * Copyright (c) 2012 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
+ *     Semantum Oy - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.diagram.elements;\r
+\r
+import java.awt.Graphics2D;\r
+import java.awt.Shape;\r
+import java.awt.font.TextLayout;\r
+import java.awt.geom.Rectangle2D;\r
+\r
+/**\r
+ * Auxiliary class for drawing positioned and single lines of laid out text.\r
+ * \r
+ * @author Tuukka Lehtonen\r
+ * \r
+ * @see TextNode\r
+ * @see TextLayout\r
+ */\r
+class Line {\r
+\r
+    public interface BoundsProcedure {\r
+        Rectangle2D getBounds(Line line);\r
+    }\r
+\r
+    public static BoundsProcedure BBOX = new BoundsProcedure() {\r
+        @Override\r
+        public Rectangle2D getBounds(Line line) {\r
+            return line.bbox;\r
+        }\r
+    };\r
+\r
+    public static BoundsProcedure ABBOX = new BoundsProcedure() {\r
+        @Override\r
+        public Rectangle2D getBounds(Line line) {\r
+            return line.abbox;\r
+        }\r
+    };\r
+\r
+    public final String document;\r
+    public final int startOffset;\r
+    public final int endOffset;\r
+\r
+    float drawPosX;\r
+    float drawPosY;\r
+    float alignedPosX;\r
+    float alignedPosY;\r
+    TextLayout layout;\r
+    Rectangle2D bbox;\r
+    Rectangle2D abbox;\r
+\r
+    public Line(String document, int startOffset, int endOffset) {\r
+        int len = document.length();\r
+        if (endOffset < startOffset)\r
+            throw new IllegalArgumentException("endOffset (" + endOffset + ") < startOffset (" + startOffset + ")");\r
+        if (startOffset < 0 || startOffset > len)\r
+            throw new IllegalArgumentException("startOffset " + startOffset + " out of bounds [0," + len + "]");\r
+        if (endOffset < 0 || endOffset > len)\r
+            throw new IllegalArgumentException("endOffset " + endOffset + " out of bounds [0," + len + "]");\r
+        this.document = document;\r
+        this.startOffset = startOffset;\r
+        this.endOffset = endOffset;\r
+    }\r
+\r
+    public void render(Graphics2D g) {\r
+        if (layout != null)\r
+            layout.draw(g, alignedPosX, alignedPosY);\r
+    }\r
+\r
+    public String getText() {\r
+        return document.substring(startOffset, endOffset);\r
+    }\r
+\r
+    public boolean intersectsRange(int start, int end) {\r
+        return start < endOffset && end > startOffset;\r
+    }\r
+\r
+    public boolean containsRange(int start, int end) {\r
+        return start >= startOffset && start <= endOffset\r
+                && end > startOffset && end <= endOffset;\r
+    }\r
+\r
+    public boolean containsOffset(int caret) {\r
+        return startOffset <= caret && caret <= endOffset;\r
+    }\r
+\r
+    public Shape getLogicalHighlightShape(int start, int end) {\r
+        return layout.getLogicalHighlightShape(\r
+                Math.max(0, start - startOffset),\r
+                Math.min(endOffset - startOffset, end - startOffset));\r
+    }\r
+\r
+    public Shape[] getCaretShapes(int caret) {\r
+        return layout.getCaretShapes(caret - startOffset);\r
+    }\r
+\r
+    public void translate(Graphics2D g, float xOffset, float yOffset) {\r
+        g.translate(alignedPosX + xOffset, alignedPosY + yOffset);\r
+    }\r
+\r
+    public void translateInv(Graphics2D g, float xOffset, float yOffset) {\r
+        g.translate(-alignedPosX - xOffset, - alignedPosY - yOffset);\r
+    }\r
+\r
+    public void alignOffset(double x, double y) {\r
+        alignedPosX = drawPosX + (float) x;\r
+        alignedPosY = drawPosY + (float) y;\r
+        if (abbox == null)\r
+            abbox = new Rectangle2D.Float();\r
+        abbox.setFrame(bbox.getX() + x, bbox.getY() + y, bbox.getWidth(), bbox.getHeight());\r
+        //System.out.println("offset(" + x + ", " + y + "): " + this);\r
+    }\r
+\r
+    @Override\r
+    public String toString() {\r
+        return getClass().getSimpleName() + "[startOffset="\r
+                + startOffset + ", endOffset=" + endOffset\r
+                + ", x=" + drawPosX + ", y=" + drawPosY\r
+                + ", ax='" + alignedPosX + ", ay=" + alignedPosY\r
+                + ", text='" + getText()\r
+                + ", bbox='" + bbox + ", abbox=" + abbox\r
+                + "']";\r
+    }\r
+\r
+}
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