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package javax.swing.plaf.synth;

import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.UIResource;

JButton object that draws a scaled Arrow in one of the cardinal directions.
Author:Scott Violet
/** * JButton object that draws a scaled Arrow in one of the cardinal directions. * * @author Scott Violet */
class SynthArrowButton extends JButton implements SwingConstants, UIResource { private int direction; public SynthArrowButton(int direction) { super(); super.setFocusable(false); setDirection(direction); setDefaultCapable(false); } public String getUIClassID() { return "ArrowButtonUI"; } public void updateUI() { setUI(new SynthArrowButtonUI()); } public void setDirection(int dir) { direction = dir; putClientProperty("__arrow_direction__", Integer.valueOf(dir)); repaint(); } public int getDirection() { return direction; } public void setFocusable(boolean focusable) {} private static class SynthArrowButtonUI extends SynthButtonUI { protected void installDefaults(AbstractButton b) { super.installDefaults(b); updateStyle(b); } protected void paint(SynthContext context, Graphics g) { SynthArrowButton button = (SynthArrowButton)context. getComponent(); context.getPainter().paintArrowButtonForeground( context, g, 0, 0, button.getWidth(), button.getHeight(), button.getDirection()); } void paintBackground(SynthContext context, Graphics g, JComponent c) { context.getPainter().paintArrowButtonBackground(context, g, 0, 0, c.getWidth(), c.getHeight()); } public void paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h) { context.getPainter().paintArrowButtonBorder(context, g, x, y, w,h); } public Dimension getMinimumSize() { return new Dimension(5, 5); } public Dimension getMaximumSize() { return new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE); } public Dimension getPreferredSize(JComponent c) { SynthContext context = getContext(c); Dimension dim = null; if (context.getComponent().getName() == "ScrollBar.button") { // ScrollBar arrow buttons can be non-square when // the ScrollBar.squareButtons property is set to FALSE // and the ScrollBar.buttonSize property is non-null dim = (Dimension) context.getStyle().get(context, "ScrollBar.buttonSize"); } if (dim == null) { // For all other cases (including Spinner, ComboBox), we will // fall back on the single ArrowButton.size value to create // a square return value int size = context.getStyle().getInt(context, "ArrowButton.size", 16); dim = new Dimension(size, size); } // handle scaling for sizeVarients for special case components. The // key "JComponent.sizeVariant" scales for large/small/mini // components are based on Apples LAF Container parent = context.getComponent().getParent(); if (parent instanceof JComponent && !(parent instanceof JComboBox)) { Object scaleKey = ((JComponent)parent). getClientProperty("JComponent.sizeVariant"); if (scaleKey != null){ if ("large".equals(scaleKey)){ dim = new Dimension( (int)(dim.width * 1.15), (int)(dim.height * 1.15)); } else if ("small".equals(scaleKey)){ dim = new Dimension( (int)(dim.width * 0.857), (int)(dim.height * 0.857)); } else if ("mini".equals(scaleKey)){ dim = new Dimension( (int)(dim.width * 0.714), (int)(dim.height * 0.714)); } } } context.dispose(); return dim; } } }