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SynthButtonUI.javaAPI DocJava SE 6 API15280Tue Jun 10 00:26:54 BST 2008javax.swing.plaf.synth

SynthButtonUI

public class SynthButtonUI extends BasicButtonUI implements sun.swing.plaf.synth.SynthUI, PropertyChangeListener
Synth's ButtonUI implementation.
version
1.28, 01/13/06
author
Scott Violet

Fields Summary
private SynthStyle
style
Constructors Summary
Methods Summary
public static javax.swing.plaf.ComponentUIcreateUI(javax.swing.JComponent c)

        return new SynthButtonUI();
public intgetBaseline(javax.swing.JComponent c, int width, int height)

        if (c == null) {
            throw new NullPointerException("Component must be non-null");
        }
        if (width < 0 || height < 0) {
            throw new IllegalArgumentException(
                    "Width and height must be >= 0");
        }
        AbstractButton b = (AbstractButton)c;
        String text = b.getText();
        if (text == null || "".equals(text)) {
            return -1;
        }
        Insets i = b.getInsets();
        Rectangle viewRect = new Rectangle();
        Rectangle textRect = new Rectangle();
        Rectangle iconRect = new Rectangle();
        viewRect.x = i.left;
        viewRect.y = i.top;
        viewRect.width = width - (i.right + viewRect.x);
        viewRect.height = height - (i.bottom + viewRect.y);

        // layout the text and icon
        SynthContext context = getContext(b);
        FontMetrics fm = context.getComponent().getFontMetrics(
            context.getStyle().getFont(context));
        context.getStyle().getGraphicsUtils(context).layoutText(
            context, fm, b.getText(), b.getIcon(), 
            b.getHorizontalAlignment(), b.getVerticalAlignment(),
            b.getHorizontalTextPosition(), b.getVerticalTextPosition(),
            viewRect, iconRect, textRect, b.getIconTextGap());
        View view = (View)b.getClientProperty(BasicHTML.propertyKey);
        int baseline;
        if (view != null) {
            baseline = BasicHTML.getHTMLBaseline(view, textRect.width,
                                                 textRect.height);
            if (baseline >= 0) {
                baseline += textRect.y;
            }
        }
        else {
            baseline = textRect.y + fm.getAscent();
        }
        context.dispose();
        return baseline;
private intgetComponentState(javax.swing.JComponent c)
Returns the current state of the passed in AbstractButton.

        int state = ENABLED;

        if (!c.isEnabled()) {
            state = DISABLED;
        }
        if (SynthLookAndFeel.selectedUI == this) {
            return SynthLookAndFeel.selectedUIState | SynthConstants.ENABLED;
        }
        AbstractButton button = (AbstractButton) c;
        ButtonModel model = button.getModel();

        if (model.isPressed()) {
            if (model.isArmed()) {
                state = PRESSED;
            }
            else {
                state = MOUSE_OVER;
            }
        }
        if (model.isRollover()) {
            state |= MOUSE_OVER;
        }
        if (model.isSelected()) {
            state |= SELECTED;
        }
        if (c.isFocusOwner() && button.isFocusPainted()) {
            state |= FOCUSED;
        }
        if ((c instanceof JButton) && ((JButton)c).isDefaultButton()) {
            state |= DEFAULT;
        }
        return state;
public javax.swing.plaf.synth.SynthContextgetContext(javax.swing.JComponent c)

        return getContext(c, getComponentState(c));
javax.swing.plaf.synth.SynthContextgetContext(javax.swing.JComponent c, int state)

        Region region = getRegion(c);
        return SynthContext.getContext(SynthContext.class, c, region,
                                       style, state);
protected javax.swing.IcongetDefaultIcon(javax.swing.AbstractButton b)
Returns the default icon. This should NOT callback to the JComponent.

param
b AbstractButton the iocn is associated with
return
default icon

        SynthContext context = getContext(b);
        Icon icon = context.getStyle().getIcon(context, getPropertyPrefix() + "icon");
        context.dispose();
        return icon;
private javax.swing.IcongetEnabledIcon(javax.swing.AbstractButton b, javax.swing.Icon defaultIcon)

        if (defaultIcon == null) {
            defaultIcon = getSynthIcon(b, SynthConstants.ENABLED); 
        }
        return defaultIcon;
protected javax.swing.IcongetIcon(javax.swing.AbstractButton b)
Returns the Icon to use in painting the button.

        Icon icon = b.getIcon();
        ButtonModel model = b.getModel();

        if (!model.isEnabled()) {
            icon = getSynthDisabledIcon(b, icon);
        } else if (model.isPressed() && model.isArmed()) {
            icon = getPressedIcon(b, getSelectedIcon(b, icon));
        } else if (b.isRolloverEnabled() && model.isRollover()) {
            icon = getRolloverIcon(b, getSelectedIcon(b, icon));
        } else if (model.isSelected()) {
            icon = getSelectedIcon(b, icon);
        } else {
            icon = getEnabledIcon(b, icon);
        }
        if(icon == null) {
            return getDefaultIcon(b);
        }
        return icon;
private javax.swing.IcongetIcon(javax.swing.AbstractButton b, javax.swing.Icon specificIcon, javax.swing.Icon defaultIcon, int state)
This method will return the icon that should be used for a button. We only want to use the synth icon defined by the style if the specific icon has not been defined for the button state and the backup icon is a UIResource (we set it, not the developer).

param
b button
param
specificIcon icon returned from the button for the specific state
param
defaultIcon fallback icon
param
state the synth state of the button

        Icon icon = specificIcon;
        if (icon == null) {
            if (defaultIcon instanceof UIResource) {
                icon = getSynthIcon(b, state);
                if (icon == null) {
                    icon = defaultIcon;
                }
            } else {
                icon = defaultIcon;
            }
        }
        return icon;
public java.awt.DimensiongetMaximumSize(javax.swing.JComponent c)

        if (c.getComponentCount() > 0 && c.getLayout() != null) {
            return null;
        }

        AbstractButton b = (AbstractButton)c;
        SynthContext ss = getContext(c);
        Dimension size = ss.getStyle().getGraphicsUtils(ss).getMaximumSize(
               ss, ss.getStyle().getFont(ss), b.getText(), getSizingIcon(b),
               b.getHorizontalAlignment(), b.getVerticalAlignment(),
               b.getHorizontalTextPosition(),
               b.getVerticalTextPosition(), b.getIconTextGap(),
               b.getDisplayedMnemonicIndex());

        ss.dispose();
        return size;
public java.awt.DimensiongetMinimumSize(javax.swing.JComponent c)

        if (c.getComponentCount() > 0 && c.getLayout() != null) {
            return null;
        }
        AbstractButton b = (AbstractButton)c;
        SynthContext ss = getContext(c);
        Dimension size = ss.getStyle().getGraphicsUtils(ss).getMinimumSize(
               ss, ss.getStyle().getFont(ss), b.getText(), getSizingIcon(b),
               b.getHorizontalAlignment(), b.getVerticalAlignment(),
               b.getHorizontalTextPosition(),
               b.getVerticalTextPosition(), b.getIconTextGap(),
               b.getDisplayedMnemonicIndex());

        ss.dispose();
        return size;
public java.awt.DimensiongetPreferredSize(javax.swing.JComponent c)

        if (c.getComponentCount() > 0 && c.getLayout() != null) {
            return null;
        }
        AbstractButton b = (AbstractButton)c;
        SynthContext ss = getContext(c);
        Dimension size = ss.getStyle().getGraphicsUtils(ss).getPreferredSize(
               ss, ss.getStyle().getFont(ss), b.getText(), getSizingIcon(b),
               b.getHorizontalAlignment(), b.getVerticalAlignment(),
               b.getHorizontalTextPosition(),
               b.getVerticalTextPosition(), b.getIconTextGap(),
               b.getDisplayedMnemonicIndex());

        ss.dispose();
        return size;
private javax.swing.IcongetPressedIcon(javax.swing.AbstractButton b, javax.swing.Icon defaultIcon)

        return getIcon(b, b.getPressedIcon(), defaultIcon,
                SynthConstants.PRESSED);
private javax.swing.plaf.synth.RegiongetRegion(javax.swing.JComponent c)

        return SynthLookAndFeel.getRegion(c);
private javax.swing.IcongetRolloverIcon(javax.swing.AbstractButton b, javax.swing.Icon defaultIcon)

        ButtonModel model = b.getModel();
        Icon icon;
        if (model.isSelected()) {
            icon = getIcon(b, b.getRolloverSelectedIcon(), defaultIcon,
                    SynthConstants.MOUSE_OVER | SynthConstants.SELECTED);
        } else {
            icon = getIcon(b, b.getRolloverIcon(), defaultIcon,
                    SynthConstants.MOUSE_OVER);
        }
        return icon;
private javax.swing.IcongetSelectedIcon(javax.swing.AbstractButton b, javax.swing.Icon defaultIcon)

        return getIcon(b, b.getSelectedIcon(), defaultIcon,
                SynthConstants.SELECTED);
protected javax.swing.IcongetSizingIcon(javax.swing.AbstractButton b)
Returns the Icon used in calculating the pref/min/max size.

        // NOTE: this is slightly different than BasicButtonUI, where it
        // would just use getIcon, but this should be ok.
        Icon icon = (b.isEnabled()) ? b.getIcon() : b.getDisabledIcon();
        if (icon == null) {
            icon = getDefaultIcon(b);
        }
        return icon;
private javax.swing.IcongetSynthDisabledIcon(javax.swing.AbstractButton b, javax.swing.Icon defaultIcon)

        ButtonModel model = b.getModel();
        Icon icon;
        if (model.isSelected()) {
            icon = getIcon(b, b.getDisabledSelectedIcon(), defaultIcon,
                    SynthConstants.DISABLED | SynthConstants.SELECTED);
        } else {
            icon = getIcon(b, b.getDisabledIcon(), defaultIcon,
                    SynthConstants.DISABLED);
        }
        return icon;
private javax.swing.IcongetSynthIcon(javax.swing.AbstractButton b, int synthConstant)

        return style.getIcon(getContext(b, synthConstant), getPropertyPrefix() + "icon");
protected intgetTextShiftOffset(javax.swing.plaf.synth.SynthContext state)
Returns the amount to shift the text/icon when painting.

        AbstractButton button = (AbstractButton)state.getComponent();
        ButtonModel model = button.getModel();

        if (model.isArmed() && model.isPressed() &&
                               button.getPressedIcon() == null) {
            return state.getStyle().getInt(state, getPropertyPrefix() +
                                           "textShiftOffset", 0);
        }
        return 0;
protected voidinstallDefaults(javax.swing.AbstractButton b)

        updateStyle(b);

        LookAndFeel.installProperty(b, "rolloverEnabled", Boolean.TRUE);
protected voidinstallListeners(javax.swing.AbstractButton b)

        super.installListeners(b);
        b.addPropertyChangeListener(this);
public voidpaint(java.awt.Graphics g, javax.swing.JComponent c)

        SynthContext context = getContext(c);

        paint(context, g);
        context.dispose();
protected voidpaint(javax.swing.plaf.synth.SynthContext context, java.awt.Graphics g)

        AbstractButton b = (AbstractButton)context.getComponent();

        g.setColor(context.getStyle().getColor(context,
                                               ColorType.TEXT_FOREGROUND));
        g.setFont(style.getFont(context));
        context.getStyle().getGraphicsUtils(context).paintText(
            context, g, b.getText(), getIcon(b),
            b.getHorizontalAlignment(), b.getVerticalAlignment(),
            b.getHorizontalTextPosition(), b.getVerticalTextPosition(),
            b.getIconTextGap(), b.getDisplayedMnemonicIndex(),
            getTextShiftOffset(context));
voidpaintBackground(javax.swing.plaf.synth.SynthContext context, java.awt.Graphics g, javax.swing.JComponent c)

        if (((AbstractButton) c).isContentAreaFilled()) {
            context.getPainter().paintButtonBackground(context, g, 0, 0,
                                                       c.getWidth(),
                                                       c.getHeight());
        }
public voidpaintBorder(javax.swing.plaf.synth.SynthContext context, java.awt.Graphics g, int x, int y, int w, int h)

        context.getPainter().paintButtonBorder(context, g, x, y, w, h);
public voidpropertyChange(java.beans.PropertyChangeEvent e)

        if (SynthLookAndFeel.shouldUpdateStyle(e)) {
            updateStyle((AbstractButton)e.getSource());
        }
protected voiduninstallDefaults(javax.swing.AbstractButton b)

        SynthContext context = getContext(b, ENABLED);

        style.uninstallDefaults(context);
        context.dispose();
        style = null;
protected voiduninstallListeners(javax.swing.AbstractButton b)

        super.uninstallListeners(b);
        b.removePropertyChangeListener(this);
public voidupdate(java.awt.Graphics g, javax.swing.JComponent c)

        SynthContext context = getContext(c);

        SynthLookAndFeel.update(context, g);
        paintBackground(context, g, c);
        paint(context, g);
        context.dispose();
voidupdateStyle(javax.swing.AbstractButton b)

        SynthContext context = getContext(b, SynthConstants.ENABLED);
        SynthStyle oldStyle = style;
        style = SynthLookAndFeel.updateStyle(context, this);
        if (style != oldStyle) {
            if (b.getMargin() == null ||
                                (b.getMargin() instanceof UIResource)) {
                Insets margin = (Insets)style.get(context,getPropertyPrefix() +
                                                  "margin");

                if (margin == null) {
                    // Some places assume margins are non-null.
                    margin = SynthLookAndFeel.EMPTY_UIRESOURCE_INSETS;
                }
                b.setMargin(margin);
            }

            Object value = style.get(context, getPropertyPrefix() + "iconTextGap");
            if (value != null) {
		        LookAndFeel.installProperty(b, "iconTextGap", value);
            }

            value = style.get(context, getPropertyPrefix() + "contentAreaFilled");
            LookAndFeel.installProperty(b, "contentAreaFilled",
                                        value != null? value : Boolean.TRUE);

            if (oldStyle != null) {
                uninstallKeyboardActions(b);
                installKeyboardActions(b);
            }

        }
        context.dispose();