--- /dev/null
+/*\r
+Copyright 2006 Jerry Huxtable\r
+\r
+Licensed under the Apache License, Version 2.0 (the "License");\r
+you may not use this file except in compliance with the License.\r
+You may obtain a copy of the License at\r
+\r
+ http://www.apache.org/licenses/LICENSE-2.0\r
+\r
+Unless required by applicable law or agreed to in writing, software\r
+distributed under the License is distributed on an "AS IS" BASIS,\r
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+See the License for the specific language governing permissions and\r
+limitations under the License.\r
+ */\r
+\r
+package org.simantics.scenegraph.utils;\r
+\r
+import java.awt.Font;\r
+import java.awt.Shape;\r
+import java.awt.Stroke;\r
+import java.awt.font.FontRenderContext;\r
+import java.awt.font.GlyphVector;\r
+import java.awt.geom.AffineTransform;\r
+import java.awt.geom.FlatteningPathIterator;\r
+import java.awt.geom.GeneralPath;\r
+import java.awt.geom.PathIterator;\r
+import java.awt.geom.Point2D;\r
+\r
+/**\r
+ * Taken from http://www.jhlabs.com/java/java2d/strokes/\r
+ */\r
+public class TextStroke implements Stroke {\r
+ private final String text;\r
+ private final Font font;\r
+ private boolean stretchToFit = false;\r
+ private boolean repeat = false;\r
+ private final AffineTransform t = new AffineTransform();\r
+\r
+ private static final float FLATNESS = 1;\r
+\r
+ public TextStroke( String text, Font font ) {\r
+ this( text, font, true, false );\r
+ }\r
+\r
+ public TextStroke( String text, Font font, boolean stretchToFit, boolean repeat ) {\r
+ this.text = text;\r
+ this.font = font;\r
+ this.stretchToFit = stretchToFit;\r
+ this.repeat = repeat;\r
+ }\r
+\r
+ @Override\r
+ public Shape createStrokedShape( Shape shape ) {\r
+ FontRenderContext frc = new FontRenderContext(null, true, true);\r
+ GlyphVector glyphVector = font.createGlyphVector(frc, text);\r
+\r
+ GeneralPath result = new GeneralPath();\r
+ PathIterator it = new FlatteningPathIterator( shape.getPathIterator( null ), FLATNESS );\r
+ float points[] = new float[6];\r
+ float moveX = 0, moveY = 0;\r
+ float lastX = 0, lastY = 0;\r
+ float thisX = 0, thisY = 0;\r
+ int type = 0;\r
+ @SuppressWarnings("unused")\r
+ boolean first = false;\r
+ float next = 0;\r
+ int currentChar = 0;\r
+ int length = glyphVector.getNumGlyphs();\r
+\r
+ if ( length == 0 )\r
+ return result;\r
+\r
+ float factor = stretchToFit ? measurePathLength( shape )/(float)glyphVector.getLogicalBounds().getWidth() : 1.0f;\r
+ float nextAdvance = 0;\r
+\r
+ while ( currentChar < length && !it.isDone() ) {\r
+ type = it.currentSegment( points );\r
+ switch( type ){\r
+ case PathIterator.SEG_MOVETO:\r
+ moveX = lastX = points[0];\r
+ moveY = lastY = points[1];\r
+ result.moveTo( moveX, moveY );\r
+ first = true;\r
+ nextAdvance = glyphVector.getGlyphMetrics( currentChar ).getAdvance() * 0.5f;\r
+ next = nextAdvance;\r
+ break;\r
+\r
+ case PathIterator.SEG_CLOSE:\r
+ points[0] = moveX;\r
+ points[1] = moveY;\r
+ // Fall into....\r
+\r
+ case PathIterator.SEG_LINETO:\r
+ thisX = points[0];\r
+ thisY = points[1];\r
+ float dx = thisX-lastX;\r
+ float dy = thisY-lastY;\r
+ float distance = (float)Math.sqrt( dx*dx + dy*dy );\r
+ if ( distance >= next ) {\r
+ float r = 1.0f/distance;\r
+ float angle = (float)Math.atan2( dy, dx );\r
+ while ( currentChar < length && distance >= next ) {\r
+ Shape glyph = glyphVector.getGlyphOutline( currentChar );\r
+ Point2D p = glyphVector.getGlyphPosition(currentChar);\r
+ float px = (float)p.getX();\r
+ float py = (float)p.getY();\r
+ float x = lastX + next*dx*r;\r
+ float y = lastY + next*dy*r;\r
+ float advance = nextAdvance;\r
+ nextAdvance = currentChar < length-1 ? glyphVector.getGlyphMetrics(currentChar+1).getAdvance() * 0.5f : 0;\r
+ t.setToTranslation( x, y );\r
+ t.rotate( angle );\r
+ t.translate( -px-advance, -py );\r
+ result.append( t.createTransformedShape( glyph ), false );\r
+ next += (advance+nextAdvance) * factor;\r
+ currentChar++;\r
+ if ( repeat )\r
+ currentChar %= length;\r
+ }\r
+ }\r
+ next -= distance;\r
+ first = false;\r
+ lastX = thisX;\r
+ lastY = thisY;\r
+ break;\r
+ }\r
+ it.next();\r
+ }\r
+\r
+ return result;\r
+ }\r
+\r
+ public float measurePathLength( Shape shape ) {\r
+ PathIterator it = new FlatteningPathIterator( shape.getPathIterator( null ), FLATNESS );\r
+ float points[] = new float[6];\r
+ float moveX = 0, moveY = 0;\r
+ float lastX = 0, lastY = 0;\r
+ float thisX = 0, thisY = 0;\r
+ int type = 0;\r
+ float total = 0;\r
+\r
+ while ( !it.isDone() ) {\r
+ type = it.currentSegment( points );\r
+ switch( type ){\r
+ case PathIterator.SEG_MOVETO:\r
+ moveX = lastX = points[0];\r
+ moveY = lastY = points[1];\r
+ break;\r
+\r
+ case PathIterator.SEG_CLOSE:\r
+ points[0] = moveX;\r
+ points[1] = moveY;\r
+ // Fall into....\r
+\r
+ case PathIterator.SEG_LINETO:\r
+ thisX = points[0];\r
+ thisY = points[1];\r
+ float dx = thisX-lastX;\r
+ float dy = thisY-lastY;\r
+ total += (float)Math.sqrt( dx*dx + dy*dy );\r
+ lastX = thisX;\r
+ lastY = thisY;\r
+ break;\r
+ }\r
+ it.next();\r
+ }\r
+\r
+ return total;\r
+ }\r
+\r
+}
\ No newline at end of file
Code Review / simantics / platform.git / blobdiff