Java example source code file (SynthToolBarUI.java)
The SynthToolBarUI.java Java example source code
/*
* Copyright (c) 2002, 2013, 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 java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Insets;
import java.awt.LayoutManager;
import java.awt.Rectangle;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.Box;
import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JSeparator;
import javax.swing.JToolBar;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.basic.BasicToolBarUI;
import sun.swing.plaf.synth.SynthIcon;
/**
* Provides the Synth L&F UI delegate for
* {@link javax.swing.JToolBar}.
*
* @since 1.7
*/
public class SynthToolBarUI extends BasicToolBarUI
implements PropertyChangeListener, SynthUI {
private Icon handleIcon = null;
private Rectangle contentRect = new Rectangle();
private SynthStyle style;
private SynthStyle contentStyle;
private SynthStyle dragWindowStyle;
/**
* Creates a new UI object for the given component.
*
* @param c component to create UI object for
* @return the UI object
*/
public static ComponentUI createUI(JComponent c) {
return new SynthToolBarUI();
}
/**
* {@inheritDoc}
*/
@Override
protected void installDefaults() {
toolBar.setLayout(createLayout());
updateStyle(toolBar);
}
/**
* {@inheritDoc}
*/
@Override
protected void installListeners() {
super.installListeners();
toolBar.addPropertyChangeListener(this);
}
/**
* {@inheritDoc}
*/
@Override
protected void uninstallListeners() {
super.uninstallListeners();
toolBar.removePropertyChangeListener(this);
}
private void updateStyle(JToolBar c) {
SynthContext context = getContext(
c, Region.TOOL_BAR_CONTENT, null, ENABLED);
contentStyle = SynthLookAndFeel.updateStyle(context, this);
context.dispose();
context = getContext(c, Region.TOOL_BAR_DRAG_WINDOW, null, ENABLED);
dragWindowStyle = SynthLookAndFeel.updateStyle(context, this);
context.dispose();
context = getContext(c, ENABLED);
SynthStyle oldStyle = style;
style = SynthLookAndFeel.updateStyle(context, this);
if (oldStyle != style) {
handleIcon =
style.getIcon(context, "ToolBar.handleIcon");
if (oldStyle != null) {
uninstallKeyboardActions();
installKeyboardActions();
}
}
context.dispose();
}
/**
* {@inheritDoc}
*/
@Override
protected void uninstallDefaults() {
SynthContext context = getContext(toolBar, ENABLED);
style.uninstallDefaults(context);
context.dispose();
style = null;
handleIcon = null;
context = getContext(toolBar, Region.TOOL_BAR_CONTENT,
contentStyle, ENABLED);
contentStyle.uninstallDefaults(context);
context.dispose();
contentStyle = null;
context = getContext(toolBar, Region.TOOL_BAR_DRAG_WINDOW,
dragWindowStyle, ENABLED);
dragWindowStyle.uninstallDefaults(context);
context.dispose();
dragWindowStyle = null;
toolBar.setLayout(null);
}
/**
* {@inheritDoc}
*/
@Override
protected void installComponents() {}
/**
* {@inheritDoc}
*/
@Override
protected void uninstallComponents() {}
/**
* Creates a {@code LayoutManager} to use with the toolbar.
*
* @return a {@code LayoutManager} instance
*/
protected LayoutManager createLayout() {
return new SynthToolBarLayoutManager();
}
/**
* {@inheritDoc}
*/
@Override
public SynthContext getContext(JComponent c) {
return getContext(c, SynthLookAndFeel.getComponentState(c));
}
private SynthContext getContext(JComponent c, int state) {
return SynthContext.getContext(SynthContext.class, c,
SynthLookAndFeel.getRegion(c), style, state);
}
private SynthContext getContext(JComponent c, Region region, SynthStyle style) {
return SynthContext.getContext(SynthContext.class, c, region,
style, getComponentState(c, region));
}
private SynthContext getContext(JComponent c, Region region,
SynthStyle style, int state) {
return SynthContext.getContext(SynthContext.class, c, region,
style, state);
}
private int getComponentState(JComponent c, Region region) {
return SynthLookAndFeel.getComponentState(c);
}
/**
* 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().paintToolBarBackground(context,
g, 0, 0, c.getWidth(), c.getHeight(),
toolBar.getOrientation());
paint(context, g);
context.dispose();
}
/**
* 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);
context.dispose();
}
/**
* {@inheritDoc}
*/
@Override
public void paintBorder(SynthContext context, Graphics g, int x,
int y, int w, int h) {
context.getPainter().paintToolBarBorder(context, g, x, y, w, h,
toolBar.getOrientation());
}
/**
* This implementation does nothing, because the {@code rollover}
* property of the {@code JToolBar} class is not used
* in the Synth Look and Feel.
*/
@Override
protected void setBorderToNonRollover(Component c) {}
/**
* This implementation does nothing, because the {@code rollover}
* property of the {@code JToolBar} class is not used
* in the Synth Look and Feel.
*/
@Override
protected void setBorderToRollover(Component c) {}
/**
* This implementation does nothing, because the {@code rollover}
* property of the {@code JToolBar} class is not used
* in the Synth Look and Feel.
*/
@Override
protected void setBorderToNormal(Component c) {}
/**
* Paints the toolbar.
*
* @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) {
if (handleIcon != null && toolBar.isFloatable()) {
int startX = toolBar.getComponentOrientation().isLeftToRight() ?
0 : toolBar.getWidth() -
SynthIcon.getIconWidth(handleIcon, context);
SynthIcon.paintIcon(handleIcon, context, g, startX, 0,
SynthIcon.getIconWidth(handleIcon, context),
SynthIcon.getIconHeight(handleIcon, context));
}
SynthContext subcontext = getContext(
toolBar, Region.TOOL_BAR_CONTENT, contentStyle);
paintContent(subcontext, g, contentRect);
subcontext.dispose();
}
/**
* Paints the toolbar content.
*
* @param context context for the component being painted
* @param g {@code Graphics} object used for painting
* @param bounds bounding box for the toolbar
*/
protected void paintContent(SynthContext context, Graphics g,
Rectangle bounds) {
SynthLookAndFeel.updateSubregion(context, g, bounds);
context.getPainter().paintToolBarContentBackground(context, g,
bounds.x, bounds.y, bounds.width, bounds.height,
toolBar.getOrientation());
context.getPainter().paintToolBarContentBorder(context, g,
bounds.x, bounds.y, bounds.width, bounds.height,
toolBar.getOrientation());
}
/**
* {@inheritDoc}
*/
@Override
protected void paintDragWindow(Graphics g) {
int w = dragWindow.getWidth();
int h = dragWindow.getHeight();
SynthContext context = getContext(
toolBar, Region.TOOL_BAR_DRAG_WINDOW, dragWindowStyle);
SynthLookAndFeel.updateSubregion(
context, g, new Rectangle(0, 0, w, h));
context.getPainter().paintToolBarDragWindowBackground(context,
g, 0, 0, w, h,
dragWindow.getOrientation());
context.getPainter().paintToolBarDragWindowBorder(context, g, 0, 0, w, h,
dragWindow.getOrientation());
context.dispose();
}
//
// PropertyChangeListener
//
/**
* {@inheritDoc}
*/
@Override
public void propertyChange(PropertyChangeEvent e) {
if (SynthLookAndFeel.shouldUpdateStyle(e)) {
updateStyle((JToolBar)e.getSource());
}
}
class SynthToolBarLayoutManager implements LayoutManager {
public void addLayoutComponent(String name, Component comp) {}
public void removeLayoutComponent(Component comp) {}
public Dimension minimumLayoutSize(Container parent) {
JToolBar tb = (JToolBar)parent;
Insets insets = tb.getInsets();
Dimension dim = new Dimension();
SynthContext context = getContext(tb);
if (tb.getOrientation() == JToolBar.HORIZONTAL) {
dim.width = tb.isFloatable() ?
SynthIcon.getIconWidth(handleIcon, context) : 0;
Dimension compDim;
for (int i = 0; i < tb.getComponentCount(); i++) {
Component component = tb.getComponent(i);
if (component.isVisible()) {
compDim = component.getMinimumSize();
dim.width += compDim.width;
dim.height = Math.max(dim.height, compDim.height);
}
}
} else {
dim.height = tb.isFloatable() ?
SynthIcon.getIconHeight(handleIcon, context) : 0;
Dimension compDim;
for (int i = 0; i < tb.getComponentCount(); i++) {
Component component = tb.getComponent(i);
if (component.isVisible()) {
compDim = component.getMinimumSize();
dim.width = Math.max(dim.width, compDim.width);
dim.height += compDim.height;
}
}
}
dim.width += insets.left + insets.right;
dim.height += insets.top + insets.bottom;
context.dispose();
return dim;
}
public Dimension preferredLayoutSize(Container parent) {
JToolBar tb = (JToolBar)parent;
Insets insets = tb.getInsets();
Dimension dim = new Dimension();
SynthContext context = getContext(tb);
if (tb.getOrientation() == JToolBar.HORIZONTAL) {
dim.width = tb.isFloatable() ?
SynthIcon.getIconWidth(handleIcon, context) : 0;
Dimension compDim;
for (int i = 0; i < tb.getComponentCount(); i++) {
Component component = tb.getComponent(i);
if (component.isVisible()) {
compDim = component.getPreferredSize();
dim.width += compDim.width;
dim.height = Math.max(dim.height, compDim.height);
}
}
} else {
dim.height = tb.isFloatable() ?
SynthIcon.getIconHeight(handleIcon, context) : 0;
Dimension compDim;
for (int i = 0; i < tb.getComponentCount(); i++) {
Component component = tb.getComponent(i);
if (component.isVisible()) {
compDim = component.getPreferredSize();
dim.width = Math.max(dim.width, compDim.width);
dim.height += compDim.height;
}
}
}
dim.width += insets.left + insets.right;
dim.height += insets.top + insets.bottom;
context.dispose();
return dim;
}
public void layoutContainer(Container parent) {
JToolBar tb = (JToolBar)parent;
Insets insets = tb.getInsets();
boolean ltr = tb.getComponentOrientation().isLeftToRight();
SynthContext context = getContext(tb);
Component c;
Dimension d;
// JToolBar by default uses a somewhat modified BoxLayout as
// its layout manager. For compatibility reasons, we want to
// support Box "glue" as a way to move things around on the
// toolbar. "glue" is represented in BoxLayout as a Box.Filler
// with a minimum and preferred size of (0,0).
// So what we do here is find the number of such glue fillers
// and figure out how much space should be allocated to them.
int glueCount = 0;
for (int i=0; i<tb.getComponentCount(); i++) {
if (isGlue(tb.getComponent(i))) glueCount++;
}
if (tb.getOrientation() == JToolBar.HORIZONTAL) {
int handleWidth = tb.isFloatable() ?
SynthIcon.getIconWidth(handleIcon, context) : 0;
// Note: contentRect does not take insets into account
// since it is used for determining the bounds that are
// passed to paintToolBarContentBackground().
contentRect.x = ltr ? handleWidth : 0;
contentRect.y = 0;
contentRect.width = tb.getWidth() - handleWidth;
contentRect.height = tb.getHeight();
// However, we do take the insets into account here for
// the purposes of laying out the toolbar child components.
int x = ltr ?
handleWidth + insets.left :
tb.getWidth() - handleWidth - insets.right;
int baseY = insets.top;
int baseH = tb.getHeight() - insets.top - insets.bottom;
// we need to get the minimum width for laying things out
// so that we can calculate how much empty space needs to
// be distributed among the "glue", if any
int extraSpacePerGlue = 0;
if (glueCount > 0) {
int minWidth = minimumLayoutSize(parent).width;
extraSpacePerGlue = (tb.getWidth() - minWidth) / glueCount;
if (extraSpacePerGlue < 0) extraSpacePerGlue = 0;
}
for (int i = 0; i < tb.getComponentCount(); i++) {
c = tb.getComponent(i);
if (c.isVisible()) {
d = c.getPreferredSize();
int y, h;
if (d.height >= baseH || c instanceof JSeparator) {
// Fill available height
y = baseY;
h = baseH;
} else {
// Center component vertically in the available space
y = baseY + (baseH / 2) - (d.height / 2);
h = d.height;
}
//if the component is a "glue" component then add to its
//width the extraSpacePerGlue it is due
if (isGlue(c)) d.width += extraSpacePerGlue;
c.setBounds(ltr ? x : x - d.width, y, d.width, h);
x = ltr ? x + d.width : x - d.width;
}
}
} else {
int handleHeight = tb.isFloatable() ?
SynthIcon.getIconHeight(handleIcon, context) : 0;
// See notes above regarding the use of insets
contentRect.x = 0;
contentRect.y = handleHeight;
contentRect.width = tb.getWidth();
contentRect.height = tb.getHeight() - handleHeight;
int baseX = insets.left;
int baseW = tb.getWidth() - insets.left - insets.right;
int y = handleHeight + insets.top;
// we need to get the minimum height for laying things out
// so that we can calculate how much empty space needs to
// be distributed among the "glue", if any
int extraSpacePerGlue = 0;
if (glueCount > 0) {
int minHeight = minimumLayoutSize(parent).height;
extraSpacePerGlue = (tb.getHeight() - minHeight) / glueCount;
if (extraSpacePerGlue < 0) extraSpacePerGlue = 0;
}
for (int i = 0; i < tb.getComponentCount(); i++) {
c = tb.getComponent(i);
if (c.isVisible()) {
d = c.getPreferredSize();
int x, w;
if (d.width >= baseW || c instanceof JSeparator) {
// Fill available width
x = baseX;
w = baseW;
} else {
// Center component horizontally in the available space
x = baseX + (baseW / 2) - (d.width / 2);
w = d.width;
}
//if the component is a "glue" component then add to its
//height the extraSpacePerGlue it is due
if (isGlue(c)) d.height += extraSpacePerGlue;
c.setBounds(x, y, w, d.height);
y += d.height;
}
}
}
context.dispose();
}
private boolean isGlue(Component c) {
if (c.isVisible() && c instanceof Box.Filler) {
Box.Filler f = (Box.Filler)c;
Dimension min = f.getMinimumSize();
Dimension pref = f.getPreferredSize();
return min.width == 0 && min.height == 0 &&
pref.width == 0 && pref.height == 0;
}
return false;
}
}
}
Other Java examples (source code examples)Here is a short list of links related to this Java SynthToolBarUI.java source code file: |
The search page
Other Java source code examples at this package level
Click here to learn more about this project
