| /* | |
| * Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved. | |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| * | |
| * This code is free software; you can redistribute it and/or modify it | |
| * under the terms of the GNU General Public License version 2 only, as | |
| * published by the Free Software Foundation. Oracle designates this | |
| * particular file as subject to the "Classpath" exception as provided | |
| * by Oracle in the LICENSE file that accompanied this code. | |
| * | |
| * This code is distributed in the hope that it will be useful, but WITHOUT | |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| * version 2 for more details (a copy is included in the LICENSE file that | |
| * accompanied this code). | |
| * | |
| * You should have received a copy of the GNU General Public License version | |
| * 2 along with this work; if not, write to the Free Software Foundation, | |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| * | |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| * or visit www.oracle.com if you need additional information or have any | |
| * questions. | |
| */ | |
| package javax.swing.plaf.synth; | |
| import javax.swing.*; | |
| import javax.swing.plaf.*; | |
| import javax.swing.plaf.basic.*; | |
| import javax.swing.text.View; | |
| import javax.swing.tree.DefaultTreeCellRenderer; | |
| import java.awt.Dimension; | |
| import java.awt.Rectangle; | |
| import java.awt.Insets; | |
| import java.awt.Graphics; | |
| import java.awt.FontMetrics; | |
| import java.beans.PropertyChangeEvent; | |
| /** | |
| * Provides the Synth L&F UI delegate for | |
| * {@link javax.swing.JLabel}. | |
| * | |
| * @author Scott Violet | |
| * @since 1.7 | |
| */ | |
| public class SynthLabelUI extends BasicLabelUI implements SynthUI { | |
| private SynthStyle style; | |
| /** | |
| * | |
| * Constructs a {@code SynthLabelUI}. | |
| */ | |
| public SynthLabelUI() {} | |
| /** | |
| * Returns the LabelUI implementation used for the skins look and feel. | |
| * | |
| * @param c component to create UI object for | |
| * @return the UI object | |
| */ | |
| public static ComponentUI createUI(JComponent c){ | |
| return new SynthLabelUI(); | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| @Override | |
| protected void installDefaults(JLabel c) { | |
| updateStyle(c); | |
| } | |
| void updateStyle(JLabel c) { | |
| SynthContext context = getContext(c, ENABLED); | |
| style = SynthLookAndFeel.updateStyle(context, this); | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| @Override | |
| protected void uninstallDefaults(JLabel c){ | |
| SynthContext context = getContext(c, ENABLED); | |
| style.uninstallDefaults(context); | |
| style = null; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| @Override | |
| public SynthContext getContext(JComponent c) { | |
| return getContext(c, getComponentState(c)); | |
| } | |
| private SynthContext getContext(JComponent c, int state) { | |
| return SynthContext.getContext(c, style, state); | |
| } | |
| private int getComponentState(JComponent c) { | |
| int state = SynthLookAndFeel.getComponentState(c); | |
| if (SynthLookAndFeel.getSelectedUI() == this && | |
| state == SynthConstants.ENABLED) { | |
| state = SynthLookAndFeel.getSelectedUIState() | SynthConstants.ENABLED; | |
| } | |
| return state; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| @Override | |
| public int getBaseline(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"); | |
| } | |
| JLabel label = (JLabel)c; | |
| String text = label.getText(); | |
| if (text == null || text.isEmpty()) { | |
| return -1; | |
| } | |
| Insets i = label.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(label); | |
| FontMetrics fm = context.getComponent().getFontMetrics( | |
| context.getStyle().getFont(context)); | |
| context.getStyle().getGraphicsUtils(context).layoutText( | |
| context, fm, label.getText(), label.getIcon(), | |
| label.getHorizontalAlignment(), label.getVerticalAlignment(), | |
| label.getHorizontalTextPosition(), label.getVerticalTextPosition(), | |
| viewRect, iconRect, textRect, label.getIconTextGap()); | |
| View view = (View)label.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(); | |
| } | |
| return baseline; | |
| } | |
| /** | |
| * Notifies this UI delegate to repaint the specified component. | |
| * This method paints the component background, then calls | |
| * the {@link #paint(SynthContext,Graphics)} method. | |
| * | |
| * <p>In general, this method does not need to be overridden by subclasses. | |
| * All Look and Feel rendering code should reside in the {@code paint} method. | |
| * | |
| * @param g the {@code Graphics} object used for painting | |
| * @param c the component being painted | |
| * @see #paint(SynthContext,Graphics) | |
| */ | |
| @Override | |
| public void update(Graphics g, JComponent c) { | |
| SynthContext context = getContext(c); | |
| SynthLookAndFeel.update(context, g); | |
| context.getPainter().paintLabelBackground(context, | |
| g, 0, 0, c.getWidth(), c.getHeight()); | |
| paint(context, g); | |
| } | |
| /** | |
| * Paints the specified component according to the Look and Feel. | |
| * <p>This method is not used by Synth Look and Feel. | |
| * Painting is handled by the {@link #paint(SynthContext,Graphics)} method. | |
| * | |
| * @param g the {@code Graphics} object used for painting | |
| * @param c the component being painted | |
| * @see #paint(SynthContext,Graphics) | |
| */ | |
| @Override | |
| public void paint(Graphics g, JComponent c) { | |
| SynthContext context = getContext(c); | |
| paint(context, g); | |
| } | |
| /** | |
| * Paints the specified component. | |
| * | |
| * @param context context for the component being painted | |
| * @param g the {@code Graphics} object used for painting | |
| * @see #update(Graphics,JComponent) | |
| */ | |
| protected void paint(SynthContext context, Graphics g) { | |
| JLabel label = (JLabel)context.getComponent(); | |
| Icon icon = (label.isEnabled()) ? label.getIcon() : | |
| label.getDisabledIcon(); | |
| if (label instanceof DefaultTreeCellRenderer && | |
| label.getForeground() instanceof UIResource) { | |
| g.setColor(label.getForeground()); | |
| } else { | |
| g.setColor(context.getStyle().getColor(context, | |
| ColorType.TEXT_FOREGROUND)); | |
| } | |
| g.setFont(style.getFont(context)); | |
| context.getStyle().getGraphicsUtils(context).paintText( | |
| context, g, label.getText(), icon, | |
| label.getHorizontalAlignment(), label.getVerticalAlignment(), | |
| label.getHorizontalTextPosition(), label.getVerticalTextPosition(), | |
| label.getIconTextGap(), label.getDisplayedMnemonicIndex(), 0); | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| @Override | |
| public void paintBorder(SynthContext context, Graphics g, int x, | |
| int y, int w, int h) { | |
| context.getPainter().paintLabelBorder(context, g, x, y, w, h); | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| @Override | |
| public Dimension getPreferredSize(JComponent c) { | |
| JLabel label = (JLabel)c; | |
| Icon icon = (label.isEnabled()) ? label.getIcon() : | |
| label.getDisabledIcon(); | |
| SynthContext context = getContext(c); | |
| Dimension size = context.getStyle().getGraphicsUtils(context). | |
| getPreferredSize( | |
| context, context.getStyle().getFont(context), label.getText(), | |
| icon, label.getHorizontalAlignment(), | |
| label.getVerticalAlignment(), label.getHorizontalTextPosition(), | |
| label.getVerticalTextPosition(), label.getIconTextGap(), | |
| label.getDisplayedMnemonicIndex()); | |
| return size; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| @Override | |
| public Dimension getMinimumSize(JComponent c) { | |
| JLabel label = (JLabel)c; | |
| Icon icon = (label.isEnabled()) ? label.getIcon() : | |
| label.getDisabledIcon(); | |
| SynthContext context = getContext(c); | |
| Dimension size = context.getStyle().getGraphicsUtils(context). | |
| getMinimumSize( | |
| context, context.getStyle().getFont(context), label.getText(), | |
| icon, label.getHorizontalAlignment(), | |
| label.getVerticalAlignment(), label.getHorizontalTextPosition(), | |
| label.getVerticalTextPosition(), label.getIconTextGap(), | |
| label.getDisplayedMnemonicIndex()); | |
| return size; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| @Override | |
| public Dimension getMaximumSize(JComponent c) { | |
| JLabel label = (JLabel)c; | |
| Icon icon = (label.isEnabled()) ? label.getIcon() : | |
| label.getDisabledIcon(); | |
| SynthContext context = getContext(c); | |
| Dimension size = context.getStyle().getGraphicsUtils(context). | |
| getMaximumSize( | |
| context, context.getStyle().getFont(context), label.getText(), | |
| icon, label.getHorizontalAlignment(), | |
| label.getVerticalAlignment(), label.getHorizontalTextPosition(), | |
| label.getVerticalTextPosition(), label.getIconTextGap(), | |
| label.getDisplayedMnemonicIndex()); | |
| return size; | |
| } | |
| /** | |
| * {@inheritDoc} | |
| */ | |
| @Override | |
| public void propertyChange(PropertyChangeEvent e) { | |
| super.propertyChange(e); | |
| if (SynthLookAndFeel.shouldUpdateStyle(e)) { | |
| updateStyle((JLabel)e.getSource()); | |
| } | |
| } | |
| } |