jfreechart-commit Mailing List for JFreeChart (Page 16)

SourceForge Headquarters 225 Broadway Suite 1600 San Diego, CA 92101 +1 (858) 422-6466

Revision: 2972
          http://sourceforge.net/p/jfreechart/code/2972
Author:   mungady
Date:     2013-11-21 11:57:19 +0000 (Thu, 21 Nov 2013)
Log Message:
-----------
2013-11-21  David Gilbert  <dav...@ob...>

    * org/jfree/chart/util/DirectionalGradientPaintTransformer.java: New file.

Added Paths:
-----------
    branches/jfreechart-1.0.x-branch/source/org/jfree/chart/util/DirectionalGradientPaintTransformer.java

Added: branches/jfreechart-1.0.x-branch/source/org/jfree/chart/util/DirectionalGradientPaintTransformer.java
===================================================================

--- branches/jfreechart-1.0.x-branch/source/org/jfree/chart/util/DirectionalGradientPaintTransformer.java	                        (rev 0)
+++ branches/jfreechart-1.0.x-branch/source/org/jfree/chart/util/DirectionalGradientPaintTransformer.java	2013-11-21 11:57:19 UTC (rev 2972)
@@ -0,0 +1,133 @@
+/* ===========================================================
+ * JFreeChart : a free chart library for the Java(tm) platform
+ * ===========================================================
+ *
+ * (C) Copyright 2000-2013, by Object Refinery Limited and Contributors.
+ *
+ * Project Info:  http://www.jfree.org/jfreechart/index.html
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
+ * USA.
+ *
+ * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
+ * Other names may be trademarks of their respective owners.]
+ *
+ * ----------------------------------------
+ * DirectionalGradientPaintTransformer.java
+ * ----------------------------------------
+ * (C) Copyright 2013 by Peter Kolb and Contributors.
+ *
+ * Original Author:  Peter Kolb;
+ * Contributor(s):   David Gilbert (for Object Refinery Limited);
+ *
+ * Changes:
+ * --------
+ * 21-Nov-2013 : Version 1, with modifications by DG (PK);
+ *
+ */
+
+package org.jfree.chart.util;
+
+import java.awt.GradientPaint;
+import java.awt.geom.Rectangle2D;
+import java.awt.Shape;
+import org.jfree.ui.GradientPaintTransformer;
+
+/**
+ * Transforms a <code>GradientPaint</code> to range over the width of a target 
+ * shape.  The orientation of the resulting <code>GradientPaint</code>
+ * depend on the coordinates of the original paint:
+ * <p>
+ * <ul>
+ * <li> If the original paint starts at 0,0 and ends at a point 0, y != 0,
+ * the resulting paint will have a vertical orientation.
+ * <li> If the original paint starts at 0,0 and ends at a point x !=0, 0,
+ * the resulting paint will have a horizontal orientation.
+ * <li> If the original paint starts at 0,0 and ends at a point x != 0, y != 0,
+ * the resulting paint will have a diagonal orientation from the upper left to
+ * the lower right edge. Lines of equal color will have a 45 ∞ angle,
+ * pointing upwards from left to right.
+ * <li> If the original paint starts at a point x != 0, y != 0,
+ * the resulting paint will have a diagonal orientation from the lower left to
+ * the upper right edge. Lines of equal color will have a 45 ∞ angle,
+ * pointing downwards from left to right.
+ * </ul>
+ * <p>
+ * In all cases, the cyclic flag of the original paint will be taken into 
+ * account.
+ *
+ * @author Peter Kolb
+ * @since 1.0.17
+ */
+public class DirectionalGradientPaintTransformer 
+        implements GradientPaintTransformer {
+    
+    /**
+     * Transforms a <code>GradientPaint</code> instance to fit some target 
+     * shape.
+     * 
+     * @param paint  the original paint (not <code>null</code>).
+     * @param target  the reference area (not <code>null</code>).
+     * 
+     * @return A transformed paint.
+     */
+    @Override
+    public GradientPaint transform(GradientPaint paint, Shape target) {
+        //get the coordinates of the original GradientPaint
+        final double px1 = paint.getPoint1().getX();
+        final double py1 = paint.getPoint1().getY();
+        final double px2 = paint.getPoint2().getX();
+        final double py2 = paint.getPoint2().getY();
+        //get the coordinates of the shape that is to be filled
+        final Rectangle2D bounds = target.getBounds();
+        final float bx = (float)bounds.getX();
+        final float by = (float)bounds.getY();
+        final float bw = (float)bounds.getWidth();
+        final float bh = (float)bounds.getHeight();
+        //reserve variables to store the coordinates of the resulting GradientPaint
+        float rx1, ry1, rx2, ry2;
+        if (px1 == 0 && py1 == 0) {
+            //start point is upper left corner
+            rx1 = bx;
+            ry1 = by;
+            if (px2 != 0.0f && py2 != 0.0f) {
+                //end point is lower right corner --> diagonal gradient
+                float offset = (paint.isCyclic()) ? (bw + bh) / 4.0f 
+                        : (bw + bh) / 2.0f ;
+                rx2 = bx + offset;
+                ry2 = by + offset;
+            }
+            else {
+                //end point is either lower left corner --> vertical gradient
+                //or end point is upper right corner --> horizontal gradient
+                rx2 = (px2 == 0) ? rx1 : (paint.isCyclic() ? (rx1 + bw / 2.0f) 
+                        : (rx1 + bw));
+                ry2 = (py2 == 0) ? ry1 : (paint.isCyclic() ? (ry1 + bh / 2.0f) 
+                        : (ry1 + bh));
+            }
+        }
+        else {
+            //start point is lower left right corner --> diagonal gradient
+            rx1 = bx;
+            ry1 = by + bh;
+            float offset = (paint.isCyclic()) ? (bw + bh) / 4.0f 
+                    : (bw + bh) / 2.0f;
+            rx2 = bx + offset;
+            ry2 = by + bh - offset;
+        }
+        return new GradientPaint(rx1, ry1, paint.getColor1(), rx2, ry2, 
+                paint.getColor2(), paint.isCyclic());
+    }
+}
\ No newline at end of file

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.





2005	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct (165)	Nov (296)	Dec (92)
2006	Jan (84)	Feb (20)	Mar (20)	Apr (42)	May (26)	Jun (30)	Jul (77)	Aug (151)	Sep (61)	Oct (259)	Nov (160)	Dec (76)
2007	Jan (159)	Feb (155)	Mar (183)	Apr (113)	May (110)	Jun (178)	Jul (56)	Aug (21)	Sep (50)	Oct (251)	Nov (218)	Dec (42)
2008	Jan (14)	Feb (37)	Mar (60)	Apr (77)	May (146)	Jun (256)	Jul (72)	Aug (51)	Sep (283)	Oct (22)	Nov (55)	Dec (53)
2009	Jan (56)	Feb (45)	Mar (56)	Apr (98)	May (84)	Jun (87)	Jul (32)	Aug (6)	Sep (19)	Oct	Nov (10)	Dec (6)
2010	Jan (2)	Feb (6)	Mar (2)	Apr	May	Jun	Jul (1)	Aug (1)	Sep	Oct (1)	Nov	Dec
2011	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep (1)	Oct (158)	Nov (17)	Dec (15)
2012	Jan (9)	Feb (3)	Mar (1)	Apr	May (1)	Jun (1)	Jul (22)	Aug (1)	Sep (29)	Oct (1)	Nov	Dec
2013	Jan (5)	Feb	Mar	Apr	May	Jun	Jul (259)	Aug (125)	Sep (24)	Oct (8)	Nov (132)	Dec (3)
2014	Jan (3)	Feb (26)	Mar (17)	Apr (8)	May	Jun (31)	Jul (126)	Aug (22)	Sep (1)	Oct	Nov	Dec
2015	Jan (1)	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep (21)	Oct	Nov (1)	Dec
2016	Jan (19)	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

jfreechart-commit Mailing List for JFreeChart (Page 16)

jfreechart-commit — Receives automatic notification of all CVS commits