/*
* Copyright (c) 1998, 2000, 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 sun.print;
import java.awt.AlphaComposite;
import java.awt.Color;
import java.awt.Composite;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Paint;
import java.awt.font.TextLayout;
import java.awt.image.RenderedImage;
import java.awt.image.renderable.RenderableImage;
/**
* Maintain information about the type of drawing
* performed by a printing application.
*/
public class PeekMetrics {
private boolean mHasNonSolidColors;
private boolean mHasCompositing;
private boolean mHasText;
private boolean mHasImages;
/**
* Return <code>true</code> if the application
* has done any drawing with a Paint that
* is not an instance of <code>Color</code>
*/
public boolean hasNonSolidColors() {
return mHasNonSolidColors;
}
/**
* Return true if the application has
* done any drawing with an alpha other
* than 1.0.
*/
public boolean hasCompositing() {
return mHasCompositing;
}
/**
* Return true if the application has
* drawn any text.
*/
public boolean hasText() {
return mHasText;
}
/**
* Return true if the application has
* drawn any images.
*/
public boolean hasImages() {
return mHasImages;
}
/**
* The application is performing a fill
* so record the needed information.
*/
public void fill(Graphics2D g) {
checkDrawingMode(g);
}
/**
* The application is performing a draw
* so record the needed information.
*/
public void draw(Graphics2D g) {
checkDrawingMode(g);
}
/**
* The application is performing a clearRect
* so record the needed information.
*/
public void clear(Graphics2D g) {
checkPaint(g.getBackground());
}
/**
* The application is drawing text
* so record the needed information.
*/
public void drawText(Graphics2D g) {
mHasText = true;
checkDrawingMode(g);
}
/**
* The application is drawing text
* defined by <code>TextLayout</code>
* so record the needed information.
*/
public void drawText(Graphics2D g, TextLayout textLayout) {
mHasText = true;
checkDrawingMode(g);
}
/**
* The application is drawing the passed
* in image.
*/
public void drawImage(Graphics2D g, Image image) {
mHasImages = true;
}
/**
* The application is drawing the passed
* in image.
*/
public void drawImage(Graphics2D g, RenderedImage image) {
mHasImages = true;
}
/**
* The application is drawing the passed
* in image.
*/
public void drawImage(Graphics2D g, RenderableImage image) {
mHasImages = true;
}
/**
* Record information about the current paint
* and composite.
*/
private void checkDrawingMode(Graphics2D g) {
checkPaint(g.getPaint());
checkAlpha(g.getComposite());
}
/**
* Record information about drawing done
* with the supplied <code>Paint</code>.
*/
private void checkPaint(Paint paint) {
if (paint instanceof Color) {
if (((Color)paint).getAlpha() < 255) {
mHasNonSolidColors = true;
}
} else {
mHasNonSolidColors = true;
}
}
/**
* Record information about drawing done
* with the supplied <code>Composite</code>.
*/
private void checkAlpha(Composite composite) {
if (composite instanceof AlphaComposite) {
AlphaComposite alphaComposite = (AlphaComposite) composite;
float alpha = alphaComposite.getAlpha();
int rule = alphaComposite.getRule();
if (alpha != 1.0
|| (rule != AlphaComposite.SRC
&& rule != AlphaComposite.SRC_OVER)) {
mHasCompositing = true;
}
} else {
mHasCompositing = true;
}
}
}