| 1 | package be.nikiroo.utils.ui; |
| 2 | |
| 3 | import java.awt.Color; |
| 4 | import java.awt.GradientPaint; |
| 5 | import java.awt.Graphics; |
| 6 | import java.awt.Graphics2D; |
| 7 | import java.awt.Paint; |
| 8 | import java.awt.RadialGradientPaint; |
| 9 | import java.awt.RenderingHints; |
| 10 | |
| 11 | import javax.swing.JComponent; |
| 12 | import javax.swing.JScrollPane; |
| 13 | import javax.swing.UIManager; |
| 14 | import javax.swing.UnsupportedLookAndFeelException; |
| 15 | |
| 16 | /** |
| 17 | * Some Java Swing utilities. |
| 18 | * |
| 19 | * @author niki |
| 20 | */ |
| 21 | public class UIUtils { |
| 22 | /** |
| 23 | * Set a fake "native look & feel" for the application if possible |
| 24 | * (check for the one currently in use, then try GTK). |
| 25 | * <p> |
| 26 | * <b>Must</b> be called prior to any GUI work. |
| 27 | */ |
| 28 | static public void setLookAndFeel() { |
| 29 | // native look & feel |
| 30 | try { |
| 31 | String noLF = "javax.swing.plaf.metal.MetalLookAndFeel"; |
| 32 | String lf = UIManager.getSystemLookAndFeelClassName(); |
| 33 | if (lf.equals(noLF)) |
| 34 | lf = "com.sun.java.swing.plaf.gtk.GTKLookAndFeel"; |
| 35 | UIManager.setLookAndFeel(lf); |
| 36 | } catch (InstantiationException e) { |
| 37 | } catch (ClassNotFoundException e) { |
| 38 | } catch (UnsupportedLookAndFeelException e) { |
| 39 | } catch (IllegalAccessException e) { |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | /** |
| 44 | * Draw a 3D-looking ellipse at the given location, if the given |
| 45 | * {@link Graphics} object is compatible (with {@link Graphics2D}); draw a |
| 46 | * simple ellipse if not. |
| 47 | * |
| 48 | * @param g |
| 49 | * the {@link Graphics} to draw on |
| 50 | * @param color |
| 51 | * the base colour |
| 52 | * @param x |
| 53 | * the X coordinate |
| 54 | * @param y |
| 55 | * the Y coordinate |
| 56 | * @param width |
| 57 | * the width radius |
| 58 | * @param height |
| 59 | * the height radius |
| 60 | */ |
| 61 | static public void drawEllipse3D(Graphics g, Color color, int x, int y, |
| 62 | int width, int height) { |
| 63 | drawEllipse3D(g, color, x, y, width, height, true); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * Draw a 3D-looking ellipse at the given location, if the given |
| 68 | * {@link Graphics} object is compatible (with {@link Graphics2D}); draw a |
| 69 | * simple ellipse if not. |
| 70 | * |
| 71 | * @param g |
| 72 | * the {@link Graphics} to draw on |
| 73 | * @param color |
| 74 | * the base colour |
| 75 | * @param x |
| 76 | * the X coordinate |
| 77 | * @param y |
| 78 | * the Y coordinate |
| 79 | * @param width |
| 80 | * the width radius |
| 81 | * @param height |
| 82 | * the height radius |
| 83 | * @param fill |
| 84 | * fill the content of the ellipse |
| 85 | */ |
| 86 | static public void drawEllipse3D(Graphics g, Color color, int x, int y, |
| 87 | int width, int height, boolean fill) { |
| 88 | if (g instanceof Graphics2D) { |
| 89 | Graphics2D g2 = (Graphics2D) g; |
| 90 | g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, |
| 91 | RenderingHints.VALUE_ANTIALIAS_ON); |
| 92 | |
| 93 | // Retains the previous state |
| 94 | Paint oldPaint = g2.getPaint(); |
| 95 | |
| 96 | // Base shape |
| 97 | g2.setColor(color); |
| 98 | if (fill) { |
| 99 | g2.fillOval(x, y, width, height); |
| 100 | } else { |
| 101 | g2.drawOval(x, y, width, height); |
| 102 | } |
| 103 | |
| 104 | // Compute dark/bright colours |
| 105 | Paint p = null; |
| 106 | Color dark = color.darker().darker(); |
| 107 | Color bright = color.brighter().brighter(); |
| 108 | Color darkEnd = new Color(dark.getRed(), dark.getGreen(), |
| 109 | dark.getBlue(), 0); |
| 110 | Color darkPartial = new Color(dark.getRed(), dark.getGreen(), |
| 111 | dark.getBlue(), 64); |
| 112 | Color brightEnd = new Color(bright.getRed(), bright.getGreen(), |
| 113 | bright.getBlue(), 0); |
| 114 | |
| 115 | // Adds shadows at the bottom left |
| 116 | p = new GradientPaint(0, height, dark, width, 0, darkEnd); |
| 117 | g2.setPaint(p); |
| 118 | if (fill) { |
| 119 | g2.fillOval(x, y, width, height); |
| 120 | } else { |
| 121 | g2.drawOval(x, y, width, height); |
| 122 | } |
| 123 | // Adds highlights at the top right |
| 124 | p = new GradientPaint(width, 0, bright, 0, height, brightEnd); |
| 125 | g2.setPaint(p); |
| 126 | if (fill) { |
| 127 | g2.fillOval(x, y, width, height); |
| 128 | } else { |
| 129 | g2.drawOval(x, y, width, height); |
| 130 | } |
| 131 | |
| 132 | // Darken the edges |
| 133 | p = new RadialGradientPaint(x + width / 2f, y + height / 2f, |
| 134 | Math.min(width / 2f, height / 2f), new float[] { 0f, 1f }, |
| 135 | new Color[] { darkEnd, darkPartial }, |
| 136 | RadialGradientPaint.CycleMethod.NO_CYCLE); |
| 137 | g2.setPaint(p); |
| 138 | if (fill) { |
| 139 | g2.fillOval(x, y, width, height); |
| 140 | } else { |
| 141 | g2.drawOval(x, y, width, height); |
| 142 | } |
| 143 | |
| 144 | // Adds inner highlight at the top right |
| 145 | p = new RadialGradientPaint(x + 3f * width / 4f, y + height / 4f, |
| 146 | Math.min(width / 4f, height / 4f), |
| 147 | new float[] { 0.0f, 0.8f }, |
| 148 | new Color[] { bright, brightEnd }, |
| 149 | RadialGradientPaint.CycleMethod.NO_CYCLE); |
| 150 | g2.setPaint(p); |
| 151 | if (fill) { |
| 152 | g2.fillOval(x * 2, y, width, height); |
| 153 | } else { |
| 154 | g2.drawOval(x * 2, y, width, height); |
| 155 | } |
| 156 | |
| 157 | // Reset original paint |
| 158 | g2.setPaint(oldPaint); |
| 159 | } else { |
| 160 | g.setColor(color); |
| 161 | if (fill) { |
| 162 | g.fillOval(x, y, width, height); |
| 163 | } else { |
| 164 | g.drawOval(x, y, width, height); |
| 165 | } |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * Add a {@link JScrollPane} around the given panel and use a sensible (for |
| 171 | * me) increment for the mouse wheel. |
| 172 | * |
| 173 | * @param pane |
| 174 | * the panel to wrap in a {@link JScrollPane} |
| 175 | * @param allowHorizontal |
| 176 | * allow horizontal scrolling (not always desired) |
| 177 | * |
| 178 | * @return the {@link JScrollPane} |
| 179 | */ |
| 180 | static public JScrollPane scroll(JComponent pane, boolean allowHorizontal) { |
| 181 | JScrollPane scroll = new JScrollPane(pane); |
| 182 | scroll.getVerticalScrollBar().setUnitIncrement(16); |
| 183 | if (!allowHorizontal) { |
| 184 | scroll.setHorizontalScrollBarPolicy( |
| 185 | JScrollPane.HORIZONTAL_SCROLLBAR_NEVER); |
| 186 | } |
| 187 | return scroll; |
| 188 | } |
| 189 | } |