JDK8/Java8源码在线阅读
/*
* Copyright (c) 1997, 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
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*/
package javax.swing;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.Paint;
import javax.swing.border.*;
/**
* Factory class for vending standard <code>Border</code> objects. Wherever
* possible, this factory will hand out references to shared
* <code>Border</code> instances.
* For further information and examples see
* <a href="https://docs.oracle.com/javase/tutorial/uiswing/components/border.htmll">How
to Use Borders</a>,
* a section in <em>The Java Tutorial</em>.
*
* @author David Kloba
*/
public class BorderFactory
{
/** Don't let anyone instantiate this class */
private BorderFactory() {
}
//// LineBorder ///////////////////////////////////////////////////////////////
/**
* Creates a line border withe the specified color.
*
* @param color a <code>Color</code> to use for the line
* @return the <code>Border</code> object
*/
public static Border createLineBorder(Color color) {
return new LineBorder(color, 1);
}
/**
* Creates a line border with the specified color
* and width. The width applies to all four sides of the
* border. To specify widths individually for the top,
* bottom, left, and right, use
* {@link #createMatteBorder(int,int,int,int,Color)}.
*
* @param color a <code>Color</code> to use for the line
* @param thickness an integer specifying the width in pixels
* @return the <code>Border</code> object
*/
public static Border createLineBorder(Color color, int thickness) {
return new LineBorder(color, thickness);
}
/**
* Creates a line border with the specified color, thickness, and corner shape.
*
* @param color the color of the border
* @param thickness the thickness of the border
* @param rounded whether or not border corners should be round
* @return the {@code Border} object
*
* @see LineBorder#LineBorder(Color, int, boolean)
* @since 1.7
*/
public static Border createLineBorder(Color color, int thickness, boolean rounded) {
return new LineBorder(color, thickness, rounded);
}
//// BevelBorder /////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
static final Border sharedRaisedBevel = new BevelBorder(BevelBorder.RAISED);
static final Border sharedLoweredBevel = new BevelBorder(BevelBorder.LOWERED);
/**
* Creates a border with a raised beveled edge, using
* brighter shades of the component's current background color
* for highlighting, and darker shading for shadows.
* (In a raised border, highlights are on top and shadows
* are underneath.)
*
* @return the <code>Border</code> object
*/
public static Border createRaisedBevelBorder() {
return createSharedBevel(BevelBorder.RAISED);
}
/**
* Creates a border with a lowered beveled edge, using
* brighter shades of the component's current background color
* for highlighting, and darker shading for shadows.
* (In a lowered border, shadows are on top and highlights
* are underneath.)
*
* @return the <code>Border</code> object
*/
public static Border createLoweredBevelBorder() {
return createSharedBevel(BevelBorder.LOWERED);
}
/**
* Creates a beveled border of the specified type, using
* brighter shades of the component's current background color
* for highlighting, and darker shading for shadows.
* (In a lowered border, shadows are on top and highlights
* are underneath.)
*
* @param type an integer specifying either
* <code>BevelBorder.LOWERED</code> or
* <code>BevelBorder.RAISED</code>
* @return the <code>Border</code> object
*/
public static Border createBevelBorder(int type) {
return createSharedBevel(type);
}
/**
* Creates a beveled border of the specified type, using
* the specified highlighting and shadowing. The outer
* edge of the highlighted area uses a brighter shade of
* the highlight color. The inner edge of the shadow area
* uses a brighter shade of the shadow color.
*
* @param type an integer specifying either
* <code>BevelBorder.LOWERED</code> or
* <code>BevelBorder.RAISED</code>
* @param highlight a <code>Color</code> object for highlights
* @param shadow a <code>Color</code> object for shadows
* @return the <code>Border</code> object
*/
public static Border createBevelBorder(int type, Color highlight, Color shadow) {
return new BevelBorder(type, highlight, shadow);
}
/**
* Creates a beveled border of the specified type, using
* the specified colors for the inner and outer highlight
* and shadow areas.
*
* @param type an integer specifying either
* <code>BevelBorder.LOWERED</code> or
* <code>BevelBorder.RAISED</code>
* @param highlightOuter a <code>Color</code> object for the
* outer edge of the highlight area
* @param highlightInner a <code>Color</code> object for the
* inner edge of the highlight area
* @param shadowOuter a <code>Color</code> object for the
* outer edge of the shadow area
* @param shadowInner a <code>Color</code> object for the
* inner edge of the shadow area
* @return the <code>Border</code> object
*/
public static Border createBevelBorder(int type,
Color highlightOuter, Color highlightInner,
Color shadowOuter, Color shadowInner) {
return new BevelBorder(type, highlightOuter, highlightInner,
shadowOuter, shadowInner);
}
static Border createSharedBevel(int type) {
if(type == BevelBorder.RAISED) {
return sharedRaisedBevel;
} else if(type == BevelBorder.LOWERED) {
return sharedLoweredBevel;
}
return null;
}
//// SoftBevelBorder ///////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
private static Border sharedSoftRaisedBevel;
private static Border sharedSoftLoweredBevel;
/**
* Creates a beveled border with a raised edge and softened corners,
* using brighter shades of the component's current background color
* for highlighting, and darker shading for shadows.
* In a raised border, highlights are on top and shadows are underneath.
*
* @return the {@code Border} object
*
* @since 1.7
*/
public static Border createRaisedSoftBevelBorder() {
if (sharedSoftRaisedBevel == null) {
sharedSoftRaisedBevel = new SoftBevelBorder(BevelBorder.RAISED);
}
return sharedSoftRaisedBevel;
}
/**
* Creates a beveled border with a lowered edge and softened corners,
* using brighter shades of the component's current background color
* for highlighting, and darker shading for shadows.
* In a lowered border, shadows are on top and highlights are underneath.
*
* @return the {@code Border} object
*
* @since 1.7
*/
public static Border createLoweredSoftBevelBorder() {
if (sharedSoftLoweredBevel == null) {
sharedSoftLoweredBevel = new SoftBevelBorder(BevelBorder.LOWERED);
}
return sharedSoftLoweredBevel;
}
/**
* Creates a beveled border of the specified type with softened corners,
* using brighter shades of the component's current background color
* for highlighting, and darker shading for shadows.
* The type is either {@link BevelBorder#RAISED} or {@link BevelBorder#LOWERED}.
*
* @param type a type of a bevel
* @return the {@code Border} object or {@code null}
* if the specified type is not valid
*
* @see BevelBorder#BevelBorder(int)
* @since 1.7
*/
public static Border createSoftBevelBorder(int type) {
if (type == BevelBorder.RAISED) {
return createRaisedSoftBevelBorder();
}
if (type == BevelBorder.LOWERED) {
return createLoweredSoftBevelBorder();
}
return null;
}
/**
* Creates a beveled border of the specified type with softened corners,
* using the specified highlighting and shadowing.
* The type is either {@link BevelBorder#RAISED} or {@link BevelBorder#LOWERED}.
* The outer edge of the highlight area uses
* a brighter shade of the {@code highlight} color.
* The inner edge of the shadow area uses
* a brighter shade of the {@code shadow} color.
*
* @param type a type of a bevel
* @param highlight a basic color of the highlight area
* @param shadow a basic color of the shadow area
* @return the {@code Border} object
*
* @see BevelBorder#BevelBorder(int, Color, Color)
* @since 1.7
*/
public static Border createSoftBevelBorder(int type, Color highlight, Color shadow) {
return new SoftBevelBorder(type, highlight, shadow);
}
/**
* Creates a beveled border of the specified type with softened corners,
* using the specified colors for the inner and outer edges
* of the highlight and the shadow areas.
* The type is either {@link BevelBorder#RAISED} or {@link BevelBorder#LOWERED}.
* Note: The shadow inner and outer colors are switched
* for a lowered bevel border.
*
* @param type a type of a bevel
* @param highlightOuter a color of the outer edge of the highlight area
* @param highlightInner a color of the inner edge of the highlight area
* @param shadowOuter a color of the outer edge of the shadow area
* @param shadowInner a color of the inner edge of the shadow area
* @return the {@code Border} object
*
* @see BevelBorder#BevelBorder(int, Color, Color, Color, Color)
* @since 1.7
*/
public static Border createSoftBevelBorder(int type, Color highlightOuter, Color highlightInner, Color shadowOuter, Color shadowInner) {
return new SoftBevelBorder(type, highlightOuter, highlightInner, shadowOuter, shadowInner);
}
//// EtchedBorder ///////////////////////////////////////////////////////////
static final Border sharedEtchedBorder = new EtchedBorder();
private static Border sharedRaisedEtchedBorder;
/**
* Creates a border with an "etched" look using
* the component's current background color for
* highlighting and shading.
*
* @return the <code>Border</code> object
*/
public static Border createEtchedBorder() {
return sharedEtchedBorder;
}
/**
* Creates a border with an "etched" look using
* the specified highlighting and shading colors.
*
* @param highlight a <code>Color</code> object for the border highlights
* @param shadow a <code>Color</code> object for the border shadows
* @return the <code>Border</code> object
*/
public static Border createEtchedBorder(Color highlight, Color shadow) {
return new EtchedBorder(highlight, shadow);
}
/**
* Creates a border with an "etched" look using
* the component's current background color for
* highlighting and shading.
*
* @param type one of <code>EtchedBorder.RAISED</code>, or
* <code>EtchedBorder.LOWERED</code>
* @return the <code>Border</code> object
* @exception IllegalArgumentException if type is not either
* <code>EtchedBorder.RAISED</code> or
* <code>EtchedBorder.LOWERED</code>
* @since 1.3
*/
public static Border createEtchedBorder(int type) {
switch (type) {
case EtchedBorder.RAISED:
if (sharedRaisedEtchedBorder == null) {
sharedRaisedEtchedBorder = new EtchedBorder
(EtchedBorder.RAISED);
}
return sharedRaisedEtchedBorder;
case EtchedBorder.LOWERED:
return sharedEtchedBorder;
default:
throw new IllegalArgumentException("type must be one of EtchedBorder.RAISED or EtchedBorder.LOWERED");
}
}
/**
* Creates a border with an "etched" look using
* the specified highlighting and shading colors.
*
* @param type one of <code>EtchedBorder.RAISED</code>, or
* <code>EtchedBorder.LOWERED</code>
* @param highlight a <code>Color</code> object for the border highlights
* @param shadow a <code>Color</code> object for the border shadows
* @return the <code>Border</code> object
* @since 1.3
*/
public static Border createEtchedBorder(int type, Color highlight,
Color shadow) {
return new EtchedBorder(type, highlight, shadow);
}
//// TitledBorder ////////////////////////////////////////////////////////////
/**
* Creates a new titled border with the specified title,
* the default border type (determined by the current look and feel),
* the default text position (determined by the current look and feel),
* the default justification (leading), and the default
* font and text color (determined by the current look and feel).
*
* @param title a <code>String</code> containing the text of the title
* @return the <code>TitledBorder</code> object
*/
public static TitledBorder createTitledBorder(String title) {
return new TitledBorder(title);
}
/**
* Creates a new titled border with an empty title,
* the specified border object,
* the default text position (determined by the current look and feel),
* the default justification (leading), and the default
* font and text color (determined by the current look and feel).
*
* @param border the <code>Border</code> object to add the title to; if
* <code>null</code> the <code>Border</code> is determined
* by the current look and feel.
* @return the <code>TitledBorder</code> object
*/
public static TitledBorder createTitledBorder(Border border) {
return new TitledBorder(border);
}
/**
* Adds a title to an existing border,
* with default positioning (determined by the current look and feel),
* default justification (leading) and the default
* font and text color (determined by the current look and feel).
*
* @param border the <code>Border</code> object to add the title to
* @param title a <code>String</code> containing the text of the title
* @return the <code>TitledBorder</code> object
*/
public static TitledBorder createTitledBorder(Border border,
String title) {
return new TitledBorder(border, title);
}
/**
* Adds a title to an existing border, with the specified
* positioning and using the default
* font and text color (determined by the current look and feel).
*
* @param border the <code>Border</code> object to add the title to
* @param title a <code>String</code> containing the text of the title
* @param titleJustification an integer specifying the justification
* of the title -- one of the following:
*<ul>
*<li><code>TitledBorder.LEFT</code>
*<li><code>TitledBorder.CENTER</code>
*<li><code>TitledBorder.RIGHT</code>
*<li><code>TitledBorder.LEADING</code>
*<li><code>TitledBorder.TRAILING</code>
*<li><code>TitledBorder.DEFAULT_JUSTIFICATION</code> (leading)
*</ul>
* @param titlePosition an integer specifying the vertical position of
* the text in relation to the border -- one of the following:
*<ul>
*<li><code> TitledBorder.ABOVE_TOP</code>
*<li><code>TitledBorder.TOP</code> (sitting on the top line)
*<li><code>TitledBorder.BELOW_TOP</code>
*<li><code>TitledBorder.ABOVE_BOTTOM</code>
*<li><code>TitledBorder.BOTTOM</code> (sitting on the bottom line)
*<li><code>TitledBorder.BELOW_BOTTOM</code>
*<li><code>TitledBorder.DEFAULT_POSITION</code> (the title position
* is determined by the current look and feel)
*</ul>
* @return the <code>TitledBorder</code> object
*/
public static TitledBorder createTitledBorder(Border border,
String title,
int titleJustification,
int titlePosition) {
return new TitledBorder(border, title, titleJustification,
titlePosition);
}
/**
* Adds a title to an existing border, with the specified
* positioning and font, and using the default text color
* (determined by the current look and feel).
*
* @param border the <code>Border</code> object to add the title to
* @param title a <code>String</code> containing the text of the title
* @param titleJustification an integer specifying the justification
* of the title -- one of the following:
*<ul>
*<li><code>TitledBorder.LEFT</code>
*<li><code>TitledBorder.CENTER</code>
*<li><code>TitledBorder.RIGHT</code>
*<li><code>TitledBorder.LEADING</code>
*<li><code>TitledBorder.TRAILING</code>
*<li><code>TitledBorder.DEFAULT_JUSTIFICATION</code> (leading)
*</ul>
* @param titlePosition an integer specifying the vertical position of
* the text in relation to the border -- one of the following:
*<ul>
*<li><code> TitledBorder.ABOVE_TOP</code>
*<li><code>TitledBorder.TOP</code> (sitting on the top line)
*<li><code>TitledBorder.BELOW_TOP</code>
*<li><code>TitledBorder.ABOVE_BOTTOM</code>
*<li><code>TitledBorder.BOTTOM</code> (sitting on the bottom line)
*<li><code>TitledBorder.BELOW_BOTTOM</code>
*<li><code>TitledBorder.DEFAULT_POSITION</code> (the title position
* is determined by the current look and feel)
*</ul>
* @param titleFont a Font object specifying the title font
* @return the TitledBorder object
*/
public static TitledBorder createTitledBorder(Border border,
String title,
int titleJustification,
int titlePosition,
Font titleFont) {
return new TitledBorder(border, title, titleJustification,
titlePosition, titleFont);
}
/**
* Adds a title to an existing border, with the specified
* positioning, font and color.
*
* @param border the <code>Border</code> object to add the title to
* @param title a <code>String</code> containing the text of the title
* @param titleJustification an integer specifying the justification
* of the title -- one of the following:
*<ul>
*<li><code>TitledBorder.LEFT</code>
*<li><code>TitledBorder.CENTER</code>
*<li><code>TitledBorder.RIGHT</code>
*<li><code>TitledBorder.LEADING</code>
*<li><code>TitledBorder.TRAILING</code>
*<li><code>TitledBorder.DEFAULT_JUSTIFICATION</code> (leading)
*</ul>
* @param titlePosition an integer specifying the vertical position of
* the text in relation to the border -- one of the following:
*<ul>
*<li><code> TitledBorder.ABOVE_TOP</code>
*<li><code>TitledBorder.TOP</code> (sitting on the top line)
*<li><code>TitledBorder.BELOW_TOP</code>
*<li><code>TitledBorder.ABOVE_BOTTOM</code>
*<li><code>TitledBorder.BOTTOM</code> (sitting on the bottom line)
*<li><code>TitledBorder.BELOW_BOTTOM</code>
*<li><code>TitledBorder.DEFAULT_POSITION</code> (the title position
* is determined by the current look and feel)
*</ul>
* @param titleFont a <code>Font</code> object specifying the title font
* @param titleColor a <code>Color</code> object specifying the title color
* @return the <code>TitledBorder</code> object
*/
public static TitledBorder createTitledBorder(Border border,
String title,
int titleJustification,
int titlePosition,
Font titleFont,
Color titleColor) {
return new TitledBorder(border, title, titleJustification,
titlePosition, titleFont, titleColor);
}
//// EmptyBorder ///////////////////////////////////////////////////////////
final static Border emptyBorder = new EmptyBorder(0, 0, 0, 0);
/**
* Creates an empty border that takes up no space. (The width
* of the top, bottom, left, and right sides are all zero.)
*
* @return the <code>Border</code> object
*/
public static Border createEmptyBorder() {
return emptyBorder;
}
/**
* Creates an empty border that takes up space but which does
* no drawing, specifying the width of the top, left, bottom, and
* right sides.
*
* @param top an integer specifying the width of the top,
* in pixels
* @param left an integer specifying the width of the left side,
* in pixels
* @param bottom an integer specifying the width of the bottom,
* in pixels
* @param right an integer specifying the width of the right side,
* in pixels
* @return the <code>Border</code> object
*/
public static Border createEmptyBorder(int top, int left,
int bottom, int right) {
return new EmptyBorder(top, left, bottom, right);
}
//// CompoundBorder ////////////////////////////////////////////////////////
/**
* Creates a compound border with a <code>null</code> inside edge and a
* <code>null</code> outside edge.
*
* @return the <code>CompoundBorder</code> object
*/
public static CompoundBorder createCompoundBorder() {
return new CompoundBorder();
}
/**
* Creates a compound border specifying the border objects to use
* for the outside and inside edges.
*
* @param outsideBorder a <code>Border</code> object for the outer
* edge of the compound border
* @param insideBorder a <code>Border</code> object for the inner
* edge of the compound border
* @return the <code>CompoundBorder</code> object
*/
public static CompoundBorder createCompoundBorder(Border outsideBorder,
Border insideBorder) {
return new CompoundBorder(outsideBorder, insideBorder);
}
//// MatteBorder ////////////////////////////////////////////////////////
/**
* Creates a matte-look border using a solid color. (The difference between
* this border and a line border is that you can specify the individual
* border dimensions.)
*
* @param top an integer specifying the width of the top,
* in pixels
* @param left an integer specifying the width of the left side,
* in pixels
* @param bottom an integer specifying the width of the right side,
* in pixels
* @param right an integer specifying the width of the bottom,
* in pixels
* @param color a <code>Color</code> to use for the border
* @return the <code>MatteBorder</code> object
*/
public static MatteBorder createMatteBorder(int top, int left, int bottom, int right,
Color color) {
return new MatteBorder(top, left, bottom, right, color);
}
/**
* Creates a matte-look border that consists of multiple tiles of a
* specified icon. Multiple copies of the icon are placed side-by-side
* to fill up the border area.
* <p>
* Note:<br>
* If the icon doesn't load, the border area is painted gray.
*
* @param top an integer specifying the width of the top,
* in pixels
* @param left an integer specifying the width of the left side,
* in pixels
* @param bottom an integer specifying the width of the right side,
* in pixels
* @param right an integer specifying the width of the bottom,
* in pixels
* @param tileIcon the <code>Icon</code> object used for the border tiles
* @return the <code>MatteBorder</code> object
*/
public static MatteBorder createMatteBorder(int top, int left, int bottom, int right,
Icon tileIcon) {
return new MatteBorder(top, left, bottom, right, tileIcon);
}
//// StrokeBorder //////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
/**
* Creates a border of the specified {@code stroke}.
* The component's foreground color will be used to render the border.
*
* @param stroke the {@link BasicStroke} object used to stroke a shape
* @return the {@code Border} object
*
* @throws NullPointerException if the specified {@code stroke} is {@code null}
*
* @since 1.7
*/
public static Border createStrokeBorder(BasicStroke stroke) {
return new StrokeBorder(stroke);
}
/**
* Creates a border of the specified {@code stroke} and {@code paint}.
* If the specified {@code paint} is {@code null},
* the component's foreground color will be used to render the border.
*
* @param stroke the {@link BasicStroke} object used to stroke a shape
* @param paint the {@link Paint} object used to generate a color
* @return the {@code Border} object
*
* @throws NullPointerException if the specified {@code stroke} is {@code null}
*
* @since 1.7
*/
public static Border createStrokeBorder(BasicStroke stroke, Paint paint) {
return new StrokeBorder(stroke, paint);
}
//// DashedBorder //////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////
private static Border sharedDashedBorder;
/**
* Creates a dashed border of the specified {@code paint}.
* If the specified {@code paint} is {@code null},
* the component's foreground color will be used to render the border.
* The width of a dash line is equal to {@code 1}.
* The relative length of a dash line and
* the relative spacing between dash lines are equal to {@code 1}.
* A dash line is not rounded.
*
* @param paint the {@link Paint} object used to generate a color
* @return the {@code Border} object
*
* @since 1.7
*/
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