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The Java Developers Almanac 1.4Order this book from Amazon. |
e798. Showing Tick-Mark Labels on a JSlider ComponentThis example demonstrates how to display labels (numerical values) at the major ticks (see e797 Showing Tick Marks on a JSlider Component).// Create a horizontal slider that moves left-to-right JSlider slider = new JSlider(); // Set major tick marks every 25 units int tickSpacing = 25; slider.setMajorTickSpacing(tickSpacing); // Determine if currently painting labels boolean b = slider.getPaintLabels(); // false // Paint labels at the major ticks - 0, 25, 50, 75, and 100 slider.setPaintLabels(true);The slider allows you to use an arbitrary label at any particular major tick mark. This example configures a slider that shows an icon at the minimum and maximum positions. The component is only used to render the label and so it can be used at more than one position. Unfortunately, it also means that if the component is interactive (e.g., a button), it will not respond to mouse and keyboard gestures. // Retrieve current table java.util.Dictionary table = slider.getLabelTable(); // Create icon ImageIcon icon = new ImageIcon("icon.gif"); JLabel label = new JLabel(icon); // Set at desired positions table.put(new Integer(slider.getMinimum()), label); table.put(new Integer(slider.getMaximum()), label); // Force the slider to use the new labels slider.setLabelTable(table);
e795. Getting and Setting the Values of a JSlider Component e796. Setting the Orientation of a JSlider Component e797. Showing Tick Marks on a JSlider Component e799. Constraining JSlider Component Values to Tick Marks e800. Listening for Value Changes in a JSlider Component © 2002 Addison-Wesley. |