/*
 * 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
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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.
/** * 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 true if the application has done any drawing with a Paint that is not an instance of Color
/** * Return {@code true} if the application * has done any drawing with a Paint that * is not an instance of {@code Color} */
public boolean hasNonSolidColors() { return mHasNonSolidColors; }
Return true if the application has done any drawing with an alpha other than 1.0.
/** * 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.
/** * Return true if the application has * drawn any text. */
public boolean hasText() { return mHasText; }
Return true if the application has drawn any images.
/** * 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.
/** * 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.
/** * 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.
/** * 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.
/** * 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 TextLayout so record the needed information.
/** * The application is drawing text * defined by {@code TextLayout} * so record the needed information. */
public void drawText(Graphics2D g, TextLayout textLayout) { mHasText = true; checkDrawingMode(g); }
The application is drawing the passed in image.
/** * 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.
/** * 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.
/** * 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.
/** * 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 Paint.
/** * Record information about drawing done * with the supplied {@code Paint}. */
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 Composite.
/** * Record information about drawing done * with the supplied {@code Composite}. */
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; } } }