131 lines
2.8 KiB
Java
131 lines
2.8 KiB
Java
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package net.sourceforge.tuned.ui;
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import java.awt.Color;
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import java.awt.Component;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.RenderingHints;
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import java.awt.geom.RoundRectangle2D;
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import javax.swing.Icon;
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import javax.swing.JTree;
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import javax.swing.tree.DefaultTreeCellRenderer;
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public class FancyTreeCellRenderer extends DefaultTreeCellRenderer {
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private Color gradientBeginColor;
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private Color gradientEndColor;
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private GradientStyle gradientStyle;
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private boolean paintGradient;
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private Color backgroundSelectionColor;
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public FancyTreeCellRenderer() {
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this(GradientStyle.TOP_TO_BOTTOM);
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}
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public FancyTreeCellRenderer(GradientStyle gradientStyle) {
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this.gradientStyle = gradientStyle;
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backgroundSelectionColor = getBackgroundSelectionColor();
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// disable default selection background
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setBackgroundSelectionColor(null);
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}
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@Override
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public Component getTreeCellRendererComponent(JTree tree, Object value, boolean sel, boolean expanded, boolean leaf, int row, boolean hasFocus) {
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super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, false);
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setIconTextGap(5);
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if (sel) {
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setPaintGradient(true);
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setGradientBeginColor(backgroundSelectionColor.brighter());
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setGradientEndColor(backgroundSelectionColor);
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} else {
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setPaintGradient(false);
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}
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return this;
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}
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@Override
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protected void paintComponent(Graphics g) {
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if (isPaintGradient()) {
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Graphics2D g2d = (Graphics2D) g;
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g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
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int imageOffset = getLabelStart() - 2;
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int arch = 16;
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RoundRectangle2D shape = new RoundRectangle2D.Double(imageOffset, 1, getWidth() - imageOffset, getHeight() - 2, arch, arch);
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g2d.setPaint(gradientStyle.getGradientPaint(shape, gradientBeginColor, gradientEndColor));
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g2d.fill(shape);
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}
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super.paintComponent(g);
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}
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protected int getLabelStart() {
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Icon icon = getIcon();
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if ((icon != null) && (getText() != null)) {
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return icon.getIconWidth() + Math.max(0, getIconTextGap() - 1);
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}
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return 0;
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}
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public Color getGradientBeginColor() {
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return gradientBeginColor;
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}
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public void setGradientBeginColor(Color gradientBeginColor) {
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this.gradientBeginColor = gradientBeginColor;
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}
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public boolean isPaintGradient() {
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return paintGradient;
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}
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public void setPaintGradient(boolean gradientEnabled) {
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this.paintGradient = gradientEnabled;
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}
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public Color getGradientEndColor() {
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return gradientEndColor;
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}
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public void setGradientEndColor(Color gradientEndColor) {
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this.gradientEndColor = gradientEndColor;
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}
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public GradientStyle getGradientStyle() {
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return gradientStyle;
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}
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public void setGradientStyle(GradientStyle gradientStyle) {
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this.gradientStyle = gradientStyle;
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}
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}
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