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package javax.swing.plaf.basic;

import sun.awt.AppContext;

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;
import javax.swing.border.*;
import javax.swing.plaf.*;
import javax.swing.text.View;



BasicToggleButton implementation
Author:Jeff Dinkins
/** * BasicToggleButton implementation * * @author Jeff Dinkins */
public class BasicToggleButtonUI extends BasicButtonUI { private static final Object BASIC_TOGGLE_BUTTON_UI_KEY = new Object(); private static final String propertyPrefix = "ToggleButton" + "."; // ******************************** // Create PLAF // ********************************
Constructs a BasicToggleButtonUI.
/** * Constructs a {@code BasicToggleButtonUI}. */
public BasicToggleButtonUI() {}
Returns an instance of BasicToggleButtonUI.
Params:
  • b – a component
Returns:an instance of BasicToggleButtonUI
/** * Returns an instance of {@code BasicToggleButtonUI}. * * @param b a component * @return an instance of {@code BasicToggleButtonUI} */
public static ComponentUI createUI(JComponent b) { AppContext appContext = AppContext.getAppContext(); BasicToggleButtonUI toggleButtonUI = (BasicToggleButtonUI) appContext.get(BASIC_TOGGLE_BUTTON_UI_KEY); if (toggleButtonUI == null) { toggleButtonUI = new BasicToggleButtonUI(); appContext.put(BASIC_TOGGLE_BUTTON_UI_KEY, toggleButtonUI); } return toggleButtonUI; } protected String getPropertyPrefix() { return propertyPrefix; } // ******************************** // Paint Methods // ******************************** public void paint(Graphics g, JComponent c) { AbstractButton b = (AbstractButton) c; ButtonModel model = b.getModel(); Dimension size = b.getSize(); FontMetrics fm = g.getFontMetrics(); Insets i = c.getInsets(); Rectangle viewRect = new Rectangle(size); viewRect.x += i.left; viewRect.y += i.top; viewRect.width -= (i.right + viewRect.x); viewRect.height -= (i.bottom + viewRect.y); Rectangle iconRect = new Rectangle(); Rectangle textRect = new Rectangle(); Font f = c.getFont(); g.setFont(f); // layout the text and icon String text = SwingUtilities.layoutCompoundLabel( c, fm, b.getText(), b.getIcon(), b.getVerticalAlignment(), b.getHorizontalAlignment(), b.getVerticalTextPosition(), b.getHorizontalTextPosition(), viewRect, iconRect, textRect, b.getText() == null ? 0 : b.getIconTextGap()); g.setColor(b.getBackground()); if (model.isArmed() && model.isPressed() || model.isSelected()) { paintButtonPressed(g,b); } // Paint the Icon if(b.getIcon() != null) { paintIcon(g, b, iconRect); } // Draw the Text if (text != null && !text.isEmpty()) { View v = (View) c.getClientProperty(BasicHTML.propertyKey); if (v != null) { v.paint(g, textRect); } else { paintText(g, b, textRect, text); } } // draw the dashed focus line. if (b.isFocusPainted() && b.hasFocus()) { paintFocus(g, b, viewRect, textRect, iconRect); } }
Paints an icon in the specified location.
Params:
  • g – an instance of Graphics
  • b – an instance of Button
  • iconRect – bounds of an icon
/** * Paints an icon in the specified location. * * @param g an instance of {@code Graphics} * @param b an instance of {@code Button} * @param iconRect bounds of an icon */
protected void paintIcon(Graphics g, AbstractButton b, Rectangle iconRect) { ButtonModel model = b.getModel(); Icon icon = null; if(!model.isEnabled()) { if(model.isSelected()) { icon = b.getDisabledSelectedIcon(); } else { icon = b.getDisabledIcon(); } } else if(model.isPressed() && model.isArmed()) { icon = b.getPressedIcon(); if(icon == null) { // Use selected icon icon = b.getSelectedIcon(); } } else if(model.isSelected()) { if(b.isRolloverEnabled() && model.isRollover()) { icon = b.getRolloverSelectedIcon(); if (icon == null) { icon = b.getSelectedIcon(); } } else { icon = b.getSelectedIcon(); } } else if(b.isRolloverEnabled() && model.isRollover()) { icon = b.getRolloverIcon(); } if(icon == null) { icon = b.getIcon(); } icon.paintIcon(b, g, iconRect.x, iconRect.y); }
Overriden so that the text will not be rendered as shifted for Toggle buttons and subclasses.
/** * Overriden so that the text will not be rendered as shifted for * Toggle buttons and subclasses. */
protected int getTextShiftOffset() { return 0; } }