diff options
Diffstat (limited to 'src/main/java/com/kitfox/svg/LinearGradient.java')
| -rw-r--r-- | src/main/java/com/kitfox/svg/LinearGradient.java | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/src/main/java/com/kitfox/svg/LinearGradient.java b/src/main/java/com/kitfox/svg/LinearGradient.java new file mode 100644 index 0000000..06a1503 --- /dev/null +++ b/src/main/java/com/kitfox/svg/LinearGradient.java @@ -0,0 +1,210 @@ +/*
+ * LinearGradient.java
+ *
+ *
+ * The Salamander Project - 2D and 3D graphics libraries in Java
+ * Copyright (C) 2004 Mark McKay
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Mark McKay can be contacted at mark@kitfox.com. Salamander and other
+ * projects can be found at http://www.kitfox.com
+ *
+ * Created on January 26, 2004, 1:54 AM
+ */
+
+package com.kitfox.svg;
+
+import com.kitfox.svg.xml.StyleAttribute;
+import java.awt.geom.*;
+import java.awt.*;
+
+import com.kitfox.svg.xml.*;
+import org.xml.sax.*;
+
+//import org.apache.batik.ext.awt.*;
+import com.kitfox.svg.batik.*;
+
+
+/**
+ * @author Mark McKay
+ * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
+ */
+public class LinearGradient extends Gradient {
+
+ float x1 = 0f;
+ float y1 = 0f;
+ float x2 = 1f;
+ float y2 = 0f;
+
+ /** Creates a new instance of LinearGradient */
+ public LinearGradient() {
+ }
+/*
+ public void loaderStartElement(SVGLoaderHelper helper, Attributes attrs, SVGElement parent)
+ {
+ //Load style string
+ super.loaderStartElement(helper, attrs, parent);
+
+ String x1 = attrs.getValue("x1");
+ String x2 = attrs.getValue("x2");
+ String y1 = attrs.getValue("y1");
+ String y2 = attrs.getValue("y2");
+
+ if (x1 != null) this.x1 = (float)XMLParseUtil.parseRatio(x1);
+ if (y1 != null) this.y1 = (float)XMLParseUtil.parseRatio(y1);
+ if (x2 != null) this.x2 = (float)XMLParseUtil.parseRatio(x2);
+ if (y2 != null) this.y2 = (float)XMLParseUtil.parseRatio(y2);
+ }
+*/
+ /*
+ public void loaderEndElement(SVGLoaderHelper helper)
+ {
+ super.loaderEndElement(helper);
+
+ build();
+ }
+ */
+
+ protected void build() throws SVGException
+ {
+ super.build();
+
+ StyleAttribute sty = new StyleAttribute();
+
+ if (getPres(sty.setName("x1"))) x1 = sty.getFloatValueWithUnits();
+
+ if (getPres(sty.setName("y1"))) y1 = sty.getFloatValueWithUnits();
+
+ if (getPres(sty.setName("x2"))) x2 = sty.getFloatValueWithUnits();
+
+ if (getPres(sty.setName("y2"))) y2 = sty.getFloatValueWithUnits();
+ }
+
+ public Paint getPaint(Rectangle2D bounds, AffineTransform xform)
+ {
+ com.kitfox.svg.batik.MultipleGradientPaint.CycleMethodEnum method;
+ switch (spreadMethod)
+ {
+ default:
+ case SM_PAD:
+ method = com.kitfox.svg.batik.MultipleGradientPaint.NO_CYCLE;
+ break;
+ case SM_REPEAT:
+ method = com.kitfox.svg.batik.MultipleGradientPaint.REPEAT;
+ break;
+ case SM_REFLECT:
+ method = com.kitfox.svg.batik.MultipleGradientPaint.REFLECT;
+ break;
+ }
+
+ com.kitfox.svg.batik.LinearGradientPaint paint;
+ if (gradientUnits == GU_USER_SPACE_ON_USE)
+ {
+// paint = new LinearGradientPaint(x1, y1, x2, y2, getStopFractions(), getStopColors(), method);
+ paint = new com.kitfox.svg.batik.LinearGradientPaint(
+ new Point2D.Float(x1, y1),
+ new Point2D.Float(x2, y2),
+ getStopFractions(),
+ getStopColors(),
+ method,
+ com.kitfox.svg.batik.MultipleGradientPaint.SRGB,
+ gradientTransform);
+ }
+ else
+ {
+ AffineTransform viewXform = new AffineTransform();
+ viewXform.translate(bounds.getX(), bounds.getY());
+
+ //This is a hack to get around shapes that have a width or height of 0. Should be close enough to the true answer.
+ double width = bounds.getWidth();
+ double height = bounds.getHeight();
+ if (width == 0) width = 1;
+ if (height == 0) height = 1;
+ viewXform.scale(width, height);
+
+ viewXform.concatenate(gradientTransform);
+
+ paint = new com.kitfox.svg.batik.LinearGradientPaint(
+ new Point2D.Float(x1, y1),
+ new Point2D.Float(x2, y2),
+ getStopFractions(),
+ getStopColors(),
+ method,
+ com.kitfox.svg.batik.MultipleGradientPaint.SRGB,
+ viewXform);
+ }
+
+ return paint;
+ }
+
+ /**
+ * Updates all attributes in this diagram associated with a time event.
+ * Ie, all attributes with track information.
+ * @return - true if this node has changed state as a result of the time
+ * update
+ */
+ public boolean updateTime(double curTime) throws SVGException
+ {
+// if (trackManager.getNumTracks() == 0) return stopChange;
+ boolean changeState = super.updateTime(curTime);
+
+ //Get current values for parameters
+ StyleAttribute sty = new StyleAttribute();
+ boolean shapeChange = false;
+
+ if (getPres(sty.setName("x1")))
+ {
+ float newVal = sty.getFloatValueWithUnits();
+ if (newVal != x1)
+ {
+ x1 = newVal;
+ shapeChange = true;
+ }
+ }
+
+ if (getPres(sty.setName("y1")))
+ {
+ float newVal = sty.getFloatValueWithUnits();
+ if (newVal != y1)
+ {
+ y1 = newVal;
+ shapeChange = true;
+ }
+ }
+
+ if (getPres(sty.setName("x2")))
+ {
+ float newVal = sty.getFloatValueWithUnits();
+ if (newVal != x2)
+ {
+ x2 = newVal;
+ shapeChange = true;
+ }
+ }
+
+ if (getPres(sty.setName("y2")))
+ {
+ float newVal = sty.getFloatValueWithUnits();
+ if (newVal != y2)
+ {
+ y2 = newVal;
+ shapeChange = true;
+ }
+ }
+
+ return changeState || shapeChange;
+ }
+}
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