Java example source code file (MetalUtils.java)
The MetalUtils.java Java example source code/*
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* 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.
*
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package javax.swing.plaf.metal;
import javax.swing.plaf.*;
import javax.swing.*;
import java.awt.*;
import java.awt.image.*;
import java.lang.ref.*;
import java.util.*;
import sun.swing.CachedPainter;
import sun.swing.ImageIconUIResource;
/**
* This is a dumping ground for random stuff we want to use in several places.
*
* @author Steve Wilson
*/
class MetalUtils {
static void drawFlush3DBorder(Graphics g, Rectangle r) {
drawFlush3DBorder(g, r.x, r.y, r.width, r.height);
}
/**
* This draws the "Flush 3D Border" which is used throughout the Metal L&F
*/
static void drawFlush3DBorder(Graphics g, int x, int y, int w, int h) {
g.translate( x, y);
g.setColor( MetalLookAndFeel.getControlDarkShadow() );
g.drawRect( 0, 0, w-2, h-2 );
g.setColor( MetalLookAndFeel.getControlHighlight() );
g.drawRect( 1, 1, w-2, h-2 );
g.setColor( MetalLookAndFeel.getControl() );
g.drawLine( 0, h-1, 1, h-2 );
g.drawLine( w-1, 0, w-2, 1 );
g.translate( -x, -y);
}
/**
* This draws a variant "Flush 3D Border"
* It is used for things like pressed buttons.
*/
static void drawPressed3DBorder(Graphics g, Rectangle r) {
drawPressed3DBorder( g, r.x, r.y, r.width, r.height );
}
static void drawDisabledBorder(Graphics g, int x, int y, int w, int h) {
g.translate( x, y);
g.setColor( MetalLookAndFeel.getControlShadow() );
g.drawRect( 0, 0, w-1, h-1 );
g.translate(-x, -y);
}
/**
* This draws a variant "Flush 3D Border"
* It is used for things like pressed buttons.
*/
static void drawPressed3DBorder(Graphics g, int x, int y, int w, int h) {
g.translate( x, y);
drawFlush3DBorder(g, 0, 0, w, h);
g.setColor( MetalLookAndFeel.getControlShadow() );
g.drawLine( 1, 1, 1, h-2 );
g.drawLine( 1, 1, w-2, 1 );
g.translate( -x, -y);
}
/**
* This draws a variant "Flush 3D Border"
* It is used for things like active toggle buttons.
* This is used rarely.
*/
static void drawDark3DBorder(Graphics g, Rectangle r) {
drawDark3DBorder(g, r.x, r.y, r.width, r.height);
}
/**
* This draws a variant "Flush 3D Border"
* It is used for things like active toggle buttons.
* This is used rarely.
*/
static void drawDark3DBorder(Graphics g, int x, int y, int w, int h) {
g.translate( x, y);
drawFlush3DBorder(g, 0, 0, w, h);
g.setColor( MetalLookAndFeel.getControl() );
g.drawLine( 1, 1, 1, h-2 );
g.drawLine( 1, 1, w-2, 1 );
g.setColor( MetalLookAndFeel.getControlShadow() );
g.drawLine( 1, h-2, 1, h-2 );
g.drawLine( w-2, 1, w-2, 1 );
g.translate( -x, -y);
}
static void drawButtonBorder(Graphics g, int x, int y, int w, int h, boolean active) {
if (active) {
drawActiveButtonBorder(g, x, y, w, h);
} else {
drawFlush3DBorder(g, x, y, w, h);
}
}
static void drawActiveButtonBorder(Graphics g, int x, int y, int w, int h) {
drawFlush3DBorder(g, x, y, w, h);
g.setColor( MetalLookAndFeel.getPrimaryControl() );
g.drawLine( x+1, y+1, x+1, h-3 );
g.drawLine( x+1, y+1, w-3, x+1 );
g.setColor( MetalLookAndFeel.getPrimaryControlDarkShadow() );
g.drawLine( x+2, h-2, w-2, h-2 );
g.drawLine( w-2, y+2, w-2, h-2 );
}
static void drawDefaultButtonBorder(Graphics g, int x, int y, int w, int h, boolean active) {
drawButtonBorder(g, x+1, y+1, w-1, h-1, active);
g.translate(x, y);
g.setColor( MetalLookAndFeel.getControlDarkShadow() );
g.drawRect( 0, 0, w-3, h-3 );
g.drawLine( w-2, 0, w-2, 0);
g.drawLine( 0, h-2, 0, h-2);
g.translate(-x, -y);
}
static void drawDefaultButtonPressedBorder(Graphics g, int x, int y, int w, int h) {
drawPressed3DBorder(g, x + 1, y + 1, w - 1, h - 1);
g.translate(x, y);
g.setColor(MetalLookAndFeel.getControlDarkShadow());
g.drawRect(0, 0, w - 3, h - 3);
g.drawLine(w - 2, 0, w - 2, 0);
g.drawLine(0, h - 2, 0, h - 2);
g.setColor(MetalLookAndFeel.getControl());
g.drawLine(w - 1, 0, w - 1, 0);
g.drawLine(0, h - 1, 0, h - 1);
g.translate(-x, -y);
}
/*
* Convenience function for determining ComponentOrientation. Helps us
* avoid having Munge directives throughout the code.
*/
static boolean isLeftToRight( Component c ) {
return c.getComponentOrientation().isLeftToRight();
}
static int getInt(Object key, int defaultValue) {
Object value = UIManager.get(key);
if (value instanceof Integer) {
return ((Integer)value).intValue();
}
if (value instanceof String) {
try {
return Integer.parseInt((String)value);
} catch (NumberFormatException nfe) {}
}
return defaultValue;
}
//
// Ocean specific stuff.
//
/**
* Draws a radial type gradient. The gradient will be drawn vertically if
* <code>vertical is true, otherwise horizontally.
* The UIManager key consists of five values:
* r1 r2 c1 c2 c3. The gradient is broken down into four chunks drawn
* in order from the origin.
* <ol>
* <li>Gradient r1 % of the size from c1 to c2
* <li>Rectangle r2 % of the size in c2.
* <li>Gradient r1 % of the size from c2 to c1
* <li>The remaining size will be filled with a gradient from c1 to c3.
* </ol>
*
* @param c Component rendering to
* @param g Graphics to draw to.
* @param key UIManager key used to look up gradient values.
* @param x X coordinate to draw from
* @param y Y coordinate to draw from
* @param w Width to draw to
* @param h Height to draw to
* @param vertical Direction of the gradient
* @return true if <code>key exists, otherwise false.
*/
static boolean drawGradient(Component c, Graphics g, String key,
int x, int y, int w, int h, boolean vertical) {
java.util.List gradient = (java.util.List)UIManager.get(key);
if (gradient == null || !(g instanceof Graphics2D)) {
return false;
}
if (w <= 0 || h <= 0) {
return true;
}
GradientPainter.INSTANCE.paint(
c, (Graphics2D)g, gradient, x, y, w, h, vertical);
return true;
}
private static class GradientPainter extends CachedPainter {
/**
* Instance used for painting. This is the only instance that is
* ever created.
*/
public static final GradientPainter INSTANCE = new GradientPainter(8);
// Size of images to create. For vertical gradients this is the width,
// otherwise it's the height.
private static final int IMAGE_SIZE = 64;
/**
* This is the actual width we're painting in, or last painted to.
*/
private int w;
/**
* This is the actual height we're painting in, or last painted to
*/
private int h;
GradientPainter(int count) {
super(count);
}
public void paint(Component c, Graphics2D g,
java.util.List gradient, int x, int y, int w,
int h, boolean isVertical) {
int imageWidth;
int imageHeight;
if (isVertical) {
imageWidth = IMAGE_SIZE;
imageHeight = h;
}
else {
imageWidth = w;
imageHeight = IMAGE_SIZE;
}
synchronized(c.getTreeLock()) {
this.w = w;
this.h = h;
paint(c, g, x, y, imageWidth, imageHeight,
gradient, isVertical);
}
}
protected void paintToImage(Component c, Image image, Graphics g,
int w, int h, Object[] args) {
Graphics2D g2 = (Graphics2D)g;
java.util.List gradient = (java.util.List)args[0];
boolean isVertical = ((Boolean)args[1]).booleanValue();
// Render to the VolatileImage
if (isVertical) {
drawVerticalGradient(g2,
((Number)gradient.get(0)).floatValue(),
((Number)gradient.get(1)).floatValue(),
(Color)gradient.get(2),
(Color)gradient.get(3),
(Color)gradient.get(4), w, h);
}
else {
drawHorizontalGradient(g2,
((Number)gradient.get(0)).floatValue(),
((Number)gradient.get(1)).floatValue(),
(Color)gradient.get(2),
(Color)gradient.get(3),
(Color)gradient.get(4), w, h);
}
}
protected void paintImage(Component c, Graphics g,
int x, int y, int imageW, int imageH,
Image image, Object[] args) {
boolean isVertical = ((Boolean)args[1]).booleanValue();
// Render to the screen
g.translate(x, y);
if (isVertical) {
for (int counter = 0; counter < w; counter += IMAGE_SIZE) {
int tileSize = Math.min(IMAGE_SIZE, w - counter);
g.drawImage(image, counter, 0, counter + tileSize, h,
0, 0, tileSize, h, null);
}
}
else {
for (int counter = 0; counter < h; counter += IMAGE_SIZE) {
int tileSize = Math.min(IMAGE_SIZE, h - counter);
g.drawImage(image, 0, counter, w, counter + tileSize,
0, 0, w, tileSize, null);
}
}
g.translate(-x, -y);
}
private void drawVerticalGradient(Graphics2D g, float ratio1,
float ratio2, Color c1,Color c2,
Color c3, int w, int h) {
int mid = (int)(ratio1 * h);
int mid2 = (int)(ratio2 * h);
if (mid > 0) {
g.setPaint(getGradient((float)0, (float)0, c1, (float)0,
(float)mid, c2));
g.fillRect(0, 0, w, mid);
}
if (mid2 > 0) {
g.setColor(c2);
g.fillRect(0, mid, w, mid2);
}
if (mid > 0) {
g.setPaint(getGradient((float)0, (float)mid + mid2, c2,
(float)0, (float)mid * 2 + mid2, c1));
g.fillRect(0, mid + mid2, w, mid);
}
if (h - mid * 2 - mid2 > 0) {
g.setPaint(getGradient((float)0, (float)mid * 2 + mid2, c1,
(float)0, (float)h, c3));
g.fillRect(0, mid * 2 + mid2, w, h - mid * 2 - mid2);
}
}
private void drawHorizontalGradient(Graphics2D g, float ratio1,
float ratio2, Color c1,Color c2,
Color c3, int w, int h) {
int mid = (int)(ratio1 * w);
int mid2 = (int)(ratio2 * w);
if (mid > 0) {
g.setPaint(getGradient((float)0, (float)0, c1,
(float)mid, (float)0, c2));
g.fillRect(0, 0, mid, h);
}
if (mid2 > 0) {
g.setColor(c2);
g.fillRect(mid, 0, mid2, h);
}
if (mid > 0) {
g.setPaint(getGradient((float)mid + mid2, (float)0, c2,
(float)mid * 2 + mid2, (float)0, c1));
g.fillRect(mid + mid2, 0, mid, h);
}
if (w - mid * 2 - mid2 > 0) {
g.setPaint(getGradient((float)mid * 2 + mid2, (float)0, c1,
w, (float)0, c3));
g.fillRect(mid * 2 + mid2, 0, w - mid * 2 - mid2, h);
}
}
private GradientPaint getGradient(float x1, float y1,
Color c1, float x2, float y2,
Color c2) {
return new GradientPaint(x1, y1, c1, x2, y2, c2, true);
}
}
/**
* Returns true if the specified widget is in a toolbar.
*/
static boolean isToolBarButton(JComponent c) {
return (c.getParent() instanceof JToolBar);
}
static Icon getOceanToolBarIcon(Image i) {
ImageProducer prod = new FilteredImageSource(i.getSource(),
new OceanToolBarImageFilter());
return new ImageIconUIResource(Toolkit.getDefaultToolkit().createImage(prod));
}
static Icon getOceanDisabledButtonIcon(Image image) {
Object[] range = (Object[])UIManager.get("Button.disabledGrayRange");
int min = 180;
int max = 215;
if (range != null) {
min = ((Integer)range[0]).intValue();
max = ((Integer)range[1]).intValue();
}
ImageProducer prod = new FilteredImageSource(image.getSource(),
new OceanDisabledButtonImageFilter(min , max));
return new ImageIconUIResource(Toolkit.getDefaultToolkit().createImage(prod));
}
/**
* Used to create a disabled Icon with the ocean look.
*/
private static class OceanDisabledButtonImageFilter extends RGBImageFilter{
private float min;
private float factor;
OceanDisabledButtonImageFilter(int min, int max) {
canFilterIndexColorModel = true;
this.min = (float)min;
this.factor = (max - min) / 255f;
}
public int filterRGB(int x, int y, int rgb) {
// Coefficients are from the sRGB color space:
int gray = Math.min(255, (int)(((0.2125f * ((rgb >> 16) & 0xFF)) +
(0.7154f * ((rgb >> 8) & 0xFF)) +
(0.0721f * (rgb & 0xFF)) + .5f) * factor + min));
return (rgb & 0xff000000) | (gray << 16) | (gray << 8) |
(gray << 0);
}
}
/**
* Used to create the rollover icons with the ocean look.
*/
private static class OceanToolBarImageFilter extends RGBImageFilter {
OceanToolBarImageFilter() {
canFilterIndexColorModel = true;
}
public int filterRGB(int x, int y, int rgb) {
int r = ((rgb >> 16) & 0xff);
int g = ((rgb >> 8) & 0xff);
int b = (rgb & 0xff);
int gray = Math.max(Math.max(r, g), b);
return (rgb & 0xff000000) | (gray << 16) | (gray << 8) |
(gray << 0);
}
}
}
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