scilab/modules/graph/src/java/org/scilab/modules/graph/shape/SvgShape.java

   1 /*
   2  * Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
   3  * Copyright (C) 2010-2010 - DIGITEO - Clement DAVID <clement.david@scilab.org>
   4  *
   5  * Copyright (C) 2012 - 2016 - Scilab Enterprises
   6  *
   7  * This file is hereby licensed under the terms of the GNU GPL v2.0,
   8  * pursuant to article 5.3.4 of the CeCILL v.2.1.
   9  * This file was originally licensed under the terms of the CeCILL v2.1,
  10  * and continues to be available under such terms.
  11  * For more information, see the COPYING file which you should have received
  12  * along with this program.
  13  *
  14  */
  15
  16 package org.scilab.modules.graph.shape;
  17
  18 import java.awt.Rectangle;
  19 import java.awt.RenderingHints;
  20 import java.awt.Shape;
  21 import java.awt.geom.AffineTransform;
  22
  23 import org.apache.batik.ext.awt.RenderingHintsKeyExt;
  24 import org.scilab.modules.graph.ScilabCanvas;
  25
  26 import com.mxgraph.canvas.mxGraphics2DCanvas;
  27 import com.mxgraph.shape.mxLabelShape;
  28 import com.mxgraph.util.mxConstants;
  29 import com.mxgraph.util.mxUtils;
  30 import com.mxgraph.view.mxCellState;
  31
  32 /**
  33  * Add the SVG capability to the standard Image shape
  34  */
  35 public class SvgShape extends mxLabelShape {
  36     /**
  37      * Paint the shape
  38      *
  39      * @param canvas the current canvas
  40      * @param state the current state
  41      * @see com.mxgraph.shape.mxImageShape#paintShape(com.mxgraph.canvas.mxGraphics2DCanvas, com.mxgraph.view.mxCellState)
  42      */
  43     @Override
  44     public void paintShape(mxGraphics2DCanvas canvas, mxCellState state) {
  45         // paint previously set background without the rotation applied
  46         if (mxUtils.getDouble(state.getStyle(), mxConstants.STYLE_ROTATION, 0) != 0) {
  47             mxCellState nonRotatedState = (mxCellState) state.clone();
  48
  49             double tmp = nonRotatedState.getCenterY() - nonRotatedState.getWidth() / 2;
  50             nonRotatedState.setX(nonRotatedState.getCenterX() - nonRotatedState.getHeight() / 2);
  51             nonRotatedState.setY(tmp);
  52
  53
  54             tmp = nonRotatedState.getWidth();
  55             nonRotatedState.setWidth(nonRotatedState.getHeight());
  56             nonRotatedState.setHeight(tmp);
  57
  58             Rectangle rect = nonRotatedState.getRectangle();
  59             canvas.getGraphics().clipRect(rect.x, rect.y, rect.width, rect.height);
  60             super.paintShape(canvas, nonRotatedState);
  61         } else {
  62             super.paintShape(canvas, state);
  63         }
  64
  65         final String image = getImageForStyle(canvas, state);
  66         if (image != null && image.endsWith(".svg")) {
  67             // Remove the "Graphics2D from BufferedImage lacks BUFFERED_IMAGE hint"
  68             // message and tweak Batik rendering options to increase performance.
  69             canvas.getGraphics().setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
  70             canvas.getGraphics().setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
  71             canvas.getGraphics().setRenderingHint(RenderingHintsKeyExt.KEY_TRANSCODING, RenderingHintsKeyExt.VALUE_TRANSCODING_PRINTING);
  72
  73             final Rectangle rect = getImageBounds(canvas, state);
  74             canvas.getGraphics().translate(rect.x, rect.y);
  75
  76             ((ScilabCanvas) canvas).paintSvgForegroundImage(rect.width, rect.height, image);
  77
  78             if (mxUtils.isTrue(state.getStyle(), mxConstants.STYLE_GLASS, false)) {
  79                 drawGlassEffect(canvas, state);
  80             }
  81         } else {
  82             super.paintShape(canvas, state);
  83         }
  84     }
  85
  86     /**
  87      * Get the image bounds for an SVG image
  88      *
  89      * @param canvas the current canvas
  90      * @param state the current state
  91      * @return the bounds of the image
  92      * @see com.mxgraph.shape.mxImageShape#getImageBounds(com.mxgraph.canvas.mxGraphics2DCanvas, com.mxgraph.view.mxCellState)
  93      */
  94     @Override
  95     public Rectangle getImageBounds(mxGraphics2DCanvas canvas, mxCellState state) {
  96         final int rotation = (int) mxUtils.getDouble(state.getStyle(),
  97                              mxConstants.STYLE_ROTATION, 0);
  98         final AffineTransform transform = new AffineTransform();
  99         transform.rotate(Math.toRadians(rotation), state.getCenterX(),
 100                          state.getCenterY());
 101         final Shape shape = transform.createTransformedShape(state
 102                             .getRectangle());
 103         return shape.getBounds();
 104     }
 105 }