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1916 lines
70 KiB
Java
1916 lines
70 KiB
Java
/*
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* Copyright (c) 1998, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package sun.print;
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import java.util.Map;
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import java.awt.BasicStroke;
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import java.awt.Color;
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import java.awt.Composite;
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import java.awt.Graphics;
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import java.awt.Graphics2D;
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import java.awt.Font;
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import java.awt.FontMetrics;
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import java.awt.font.FontRenderContext;
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import java.awt.GraphicsConfiguration;
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import java.awt.Image;
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import java.awt.Paint;
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import java.awt.Rectangle;
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import java.awt.Shape;
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import java.awt.Stroke;
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import java.awt.RenderingHints;
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import java.awt.RenderingHints.Key;
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import java.awt.font.GlyphVector;
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import java.awt.font.TextLayout;
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import java.awt.geom.AffineTransform;
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import java.awt.geom.Line2D;
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import java.awt.geom.Rectangle2D;
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import java.awt.geom.RoundRectangle2D;
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import java.awt.image.BufferedImage;
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import java.awt.image.BufferedImageOp;
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import java.awt.image.ImageObserver;
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import java.awt.image.RenderedImage;
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import java.awt.image.renderable.RenderableImage;
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import java.awt.print.PrinterGraphics;
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import java.awt.print.PrinterJob;
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import java.text.AttributedCharacterIterator;
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import sun.java2d.Spans;
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public class PeekGraphics extends Graphics2D
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implements PrinterGraphics,
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ImageObserver,
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Cloneable {
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/**
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* Drawing methods will be forwarded to this object.
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*/
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Graphics2D mGraphics;
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/**
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* The PrinterJob controlling the current printing.
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*/
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PrinterJob mPrinterJob;
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/**
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* Keeps track of where drawing occurs on the page.
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*/
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private Spans mDrawingArea = new Spans();
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/**
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* Track information about the types of drawing
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* performed by the printing application.
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*/
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private PeekMetrics mPrintMetrics = new PeekMetrics();
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/**
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* If true the application will only be drawing AWT style
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* graphics, no Java2D graphics.
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*/
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private boolean mAWTDrawingOnly = false;
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/**
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* The new PeekGraphics2D will forward state changing
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* calls to 'graphics'. 'printerJob' is stored away
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* so that the printing application can get the PrinterJob
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* if needed.
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*/
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public PeekGraphics(Graphics2D graphics, PrinterJob printerJob) {
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mGraphics = graphics;
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mPrinterJob = printerJob;
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}
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/**
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* Return the Graphics2D object that does the drawing
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* for this instance.
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*/
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public Graphics2D getDelegate() {
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return mGraphics;
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}
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/**
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* Set the Graphics2D instance which will do the
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* drawing.
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*/
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public void setDelegate(Graphics2D graphics) {
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mGraphics = graphics;
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}
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public PrinterJob getPrinterJob() {
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return mPrinterJob;
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}
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/**
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* The caller promises that only AWT graphics will be drawn.
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* The print system can use this information to make general
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* assumptions about the types of graphics to be drawn without
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* requiring the application to draw the contents multiple
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* times.
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*/
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public void setAWTDrawingOnly() {
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mAWTDrawingOnly = true;
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}
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public boolean getAWTDrawingOnly() {
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return mAWTDrawingOnly;
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}
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/**
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* Return a Spans instance describing the parts of the page in
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* to which drawing occurred.
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*/
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public Spans getDrawingArea() {
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return mDrawingArea;
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}
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/**
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* Returns the device configuration associated with this Graphics2D.
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*/
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public GraphicsConfiguration getDeviceConfiguration() {
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return ((RasterPrinterJob)mPrinterJob).getPrinterGraphicsConfig();
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}
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/* The Delegated Graphics Methods */
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/**
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* Creates a new {@code Graphics} object that is
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* a copy of this {@code Graphics} object.
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* @return a new graphics context that is a copy of
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* this graphics context.
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* @since 1.0
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*/
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public Graphics create() {
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PeekGraphics newGraphics = null;
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try {
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newGraphics = (PeekGraphics) clone();
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newGraphics.mGraphics = (Graphics2D) mGraphics.create();
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/* This exception can not happen unless this
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* class no longer implements the Cloneable
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* interface.
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*/
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} catch (CloneNotSupportedException e) {
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// can never happen.
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}
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return newGraphics;
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}
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/**
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* Translates the origin of the graphics context to the point
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* (<i>x</i>, <i>y</i>) in the current coordinate system.
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* Modifies this graphics context so that its new origin corresponds
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* to the point (<i>x</i>, <i>y</i>) in this graphics context's
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* original coordinate system. All coordinates used in subsequent
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* rendering operations on this graphics context will be relative
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* to this new origin.
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* @param x the <i>x</i> coordinate.
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* @param y the <i>y</i> coordinate.
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* @since 1.0
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*/
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public void translate(int x, int y) {
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mGraphics.translate(x, y);
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}
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/**
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* Concatenates the current transform of this Graphics2D with a
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* translation transformation.
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* This is equivalent to calling transform(T), where T is an
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* AffineTransform represented by the following matrix:
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* <pre>
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* [ 1 0 tx ]
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* [ 0 1 ty ]
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* [ 0 0 1 ]
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* </pre>
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*/
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public void translate(double tx, double ty) {
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mGraphics.translate(tx, ty);
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}
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/**
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* Concatenates the current transform of this Graphics2D with a
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* rotation transformation.
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* This is equivalent to calling transform(R), where R is an
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* AffineTransform represented by the following matrix:
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* <pre>
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* [ cos(theta) -sin(theta) 0 ]
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* [ sin(theta) cos(theta) 0 ]
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* [ 0 0 1 ]
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* </pre>
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* Rotating with a positive angle theta rotates points on the positive
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* x axis toward the positive y axis.
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* @param theta The angle of rotation in radians.
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*/
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public void rotate(double theta) {
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mGraphics.rotate(theta);
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}
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/**
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* Concatenates the current transform of this Graphics2D with a
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* translated rotation transformation.
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* This is equivalent to the following sequence of calls:
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* <pre>
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* translate(x, y);
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* rotate(theta);
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* translate(-x, -y);
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* </pre>
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* Rotating with a positive angle theta rotates points on the positive
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* x axis toward the positive y axis.
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* @param theta The angle of rotation in radians.
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* @param x The x coordinate of the origin of the rotation
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* @param y The x coordinate of the origin of the rotation
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*/
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public void rotate(double theta, double x, double y) {
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mGraphics.rotate(theta, x, y);
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}
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/**
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* Concatenates the current transform of this Graphics2D with a
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* scaling transformation.
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* This is equivalent to calling transform(S), where S is an
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* AffineTransform represented by the following matrix:
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* <pre>
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* [ sx 0 0 ]
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* [ 0 sy 0 ]
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* [ 0 0 1 ]
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* </pre>
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*/
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public void scale(double sx, double sy) {
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mGraphics.scale(sx, sy);
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}
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/**
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* Concatenates the current transform of this Graphics2D with a
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* shearing transformation.
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* This is equivalent to calling transform(SH), where SH is an
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* AffineTransform represented by the following matrix:
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* <pre>
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* [ 1 shx 0 ]
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* [ shy 1 0 ]
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* [ 0 0 1 ]
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* </pre>
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* @param shx The factor by which coordinates are shifted towards the
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* positive X axis direction according to their Y coordinate
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* @param shy The factor by which coordinates are shifted towards the
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* positive Y axis direction according to their X coordinate
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*/
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public void shear(double shx, double shy) {
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mGraphics.shear(shx, shy);
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}
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/**
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* Gets this graphics context's current color.
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* @return this graphics context's current color.
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* @see java.awt.Color
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* @see java.awt.Graphics#setColor
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* @since 1.0
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*/
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public Color getColor() {
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return mGraphics.getColor();
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}
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/**
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* Sets this graphics context's current color to the specified
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* color. All subsequent graphics operations using this graphics
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* context use this specified color.
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* @param c the new rendering color.
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* @see java.awt.Color
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* @see java.awt.Graphics#getColor
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* @since 1.0
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*/
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public void setColor(Color c) {
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mGraphics.setColor(c);
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}
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/**
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* Sets the paint mode of this graphics context to overwrite the
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* destination with this graphics context's current color.
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* This sets the logical pixel operation function to the paint or
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* overwrite mode. All subsequent rendering operations will
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* overwrite the destination with the current color.
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* @since 1.0
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*/
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public void setPaintMode() {
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mGraphics.setPaintMode();
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}
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/**
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* Sets the paint mode of this graphics context to alternate between
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* this graphics context's current color and the new specified color.
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* This specifies that logical pixel operations are performed in the
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* XOR mode, which alternates pixels between the current color and
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* a specified XOR color.
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* <p>
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* When drawing operations are performed, pixels which are the
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* current color are changed to the specified color, and vice versa.
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* <p>
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* Pixels that are of colors other than those two colors are changed
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* in an unpredictable but reversible manner; if the same figure is
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* drawn twice, then all pixels are restored to their original values.
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* @param c1 the XOR alternation color
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* @since 1.0
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*/
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public void setXORMode(Color c1) {
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mGraphics.setXORMode(c1);
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}
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/**
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* Gets the current font.
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* @return this graphics context's current font.
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* @see java.awt.Font
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* @see java.awt.Graphics#setFont
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* @since 1.0
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*/
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public Font getFont() {
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return mGraphics.getFont();
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}
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/**
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* Sets this graphics context's font to the specified font.
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* All subsequent text operations using this graphics context
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* use this font.
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* @param font the font.
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* @see java.awt.Graphics#getFont
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* @see java.awt.Graphics#drawChars(char[], int, int, int, int)
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* @see java.awt.Graphics#drawString(String, int, int)
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* @see java.awt.Graphics#drawBytes(byte[], int, int, int, int)
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* @since 1.0
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*/
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public void setFont(Font font) {
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mGraphics.setFont(font);
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}
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/**
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* Gets the font metrics for the specified font.
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* @return the font metrics for the specified font.
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* @param f the specified font
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* @see java.awt.Graphics#getFont
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* @see java.awt.FontMetrics
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* @see java.awt.Graphics#getFontMetrics()
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* @since 1.0
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*/
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public FontMetrics getFontMetrics(Font f) {
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return mGraphics.getFontMetrics(f);
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}
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/**
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* Get the rendering context of the font
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* within this Graphics2D context.
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*/
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public FontRenderContext getFontRenderContext() {
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return mGraphics.getFontRenderContext();
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}
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/**
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* Returns the bounding rectangle of the current clipping area.
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* The coordinates in the rectangle are relative to the coordinate
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* system origin of this graphics context.
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* @return the bounding rectangle of the current clipping area.
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* @see java.awt.Graphics#getClip
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* @see java.awt.Graphics#clipRect
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* @see java.awt.Graphics#setClip(int, int, int, int)
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* @see java.awt.Graphics#setClip(Shape)
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* @since 1.1
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*/
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public Rectangle getClipBounds() {
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return mGraphics.getClipBounds();
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}
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/**
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* Intersects the current clip with the specified rectangle.
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* The resulting clipping area is the intersection of the current
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* clipping area and the specified rectangle.
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* This method can only be used to make the current clip smaller.
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* To set the current clip larger, use any of the setClip methods.
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* Rendering operations have no effect outside of the clipping area.
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* @param x the x coordinate of the rectangle to intersect the clip with
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* @param y the y coordinate of the rectangle to intersect the clip with
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* @param width the width of the rectangle to intersect the clip with
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* @param height the height of the rectangle to intersect the clip with
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* @see #setClip(int, int, int, int)
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* @see #setClip(Shape)
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*/
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public void clipRect(int x, int y, int width, int height) {
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mGraphics.clipRect(x, y, width, height);
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}
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/**
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* Sets the current clip to the rectangle specified by the given
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* coordinates.
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* Rendering operations have no effect outside of the clipping area.
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* @param x the <i>x</i> coordinate of the new clip rectangle.
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* @param y the <i>y</i> coordinate of the new clip rectangle.
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* @param width the width of the new clip rectangle.
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* @param height the height of the new clip rectangle.
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* @see java.awt.Graphics#clipRect
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* @see java.awt.Graphics#setClip(Shape)
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* @since 1.1
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*/
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public void setClip(int x, int y, int width, int height) {
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mGraphics.setClip(x, y, width, height);
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}
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/**
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* Gets the current clipping area.
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* @return a {@code Shape} object representing the
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* current clipping area.
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* @see java.awt.Graphics#getClipBounds
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* @see java.awt.Graphics#clipRect
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* @see java.awt.Graphics#setClip(int, int, int, int)
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* @see java.awt.Graphics#setClip(Shape)
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* @since 1.1
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*/
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public Shape getClip() {
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return mGraphics.getClip();
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}
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/**
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* Sets the current clipping area to an arbitrary clip shape.
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* Not all objects which implement the {@code Shape}
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* interface can be used to set the clip. The only
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* {@code Shape} objects which are guaranteed to be
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* supported are {@code Shape} objects which are
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* obtained via the {@code getClip} method and via
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* {@code Rectangle} objects.
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* @see java.awt.Graphics#getClip()
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* @see java.awt.Graphics#clipRect
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* @see java.awt.Graphics#setClip(int, int, int, int)
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* @since 1.1
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*/
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public void setClip(Shape clip) {
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mGraphics.setClip(clip);
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}
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/**
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* Copies an area of the component by a distance specified by
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* {@code dx} and {@code dy}. From the point specified
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* by {@code x} and {@code y}, this method
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* copies downwards and to the right. To copy an area of the
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* component to the left or upwards, specify a negative value for
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* {@code dx} or {@code dy}.
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* If a portion of the source rectangle lies outside the bounds
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* of the component, or is obscured by another window or component,
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* {@code copyArea} will be unable to copy the associated
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* pixels. The area that is omitted can be refreshed by calling
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* the component's {@code paint} method.
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* @param x the <i>x</i> coordinate of the source rectangle.
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* @param y the <i>y</i> coordinate of the source rectangle.
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* @param width the width of the source rectangle.
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* @param height the height of the source rectangle.
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* @param dx the horizontal distance to copy the pixels.
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* @param dy the vertical distance to copy the pixels.
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* @since 1.0
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*/
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public void copyArea(int x, int y, int width, int height,
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int dx, int dy) {
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// This method is not supported for printing so we do nothing here.
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}
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/**
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* Draws a line, using the current color, between the points
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* <code>(x1, y1)</code> and <code>(x2, y2)</code>
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* in this graphics context's coordinate system.
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* @param x1 the first point's <i>x</i> coordinate.
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* @param y1 the first point's <i>y</i> coordinate.
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* @param x2 the second point's <i>x</i> coordinate.
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* @param y2 the second point's <i>y</i> coordinate.
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* @since 1.0
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*/
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public void drawLine(int x1, int y1, int x2, int y2) {
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addStrokeShape(new Line2D.Float(x1, y1, x2, y2));
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mPrintMetrics.draw(this);
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}
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/**
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* Fills the specified rectangle.
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* The left and right edges of the rectangle are at
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* {@code x} and <code>x + width - 1</code>.
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* The top and bottom edges are at
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* {@code y} and <code>y + height - 1</code>.
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* The resulting rectangle covers an area
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* {@code width} pixels wide by
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* {@code height} pixels tall.
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* The rectangle is filled using the graphics context's current color.
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* @param x the <i>x</i> coordinate
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* of the rectangle to be filled.
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* @param y the <i>y</i> coordinate
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* of the rectangle to be filled.
|
|
* @param width the width of the rectangle to be filled.
|
|
* @param height the height of the rectangle to be filled.
|
|
* @see java.awt.Graphics#fillRect
|
|
* @see java.awt.Graphics#clearRect
|
|
* @since 1.0
|
|
*/
|
|
public void fillRect(int x, int y, int width, int height) {
|
|
|
|
addDrawingRect(new Rectangle2D.Float(x, y, width, height));
|
|
mPrintMetrics.fill(this);
|
|
|
|
}
|
|
|
|
/**
|
|
* Clears the specified rectangle by filling it with the background
|
|
* color of the current drawing surface. This operation does not
|
|
* use the current paint mode.
|
|
* <p>
|
|
* Beginning with Java 1.1, the background color
|
|
* of offscreen images may be system dependent. Applications should
|
|
* use {@code setColor} followed by {@code fillRect} to
|
|
* ensure that an offscreen image is cleared to a specific color.
|
|
* @param x the <i>x</i> coordinate of the rectangle to clear.
|
|
* @param y the <i>y</i> coordinate of the rectangle to clear.
|
|
* @param width the width of the rectangle to clear.
|
|
* @param height the height of the rectangle to clear.
|
|
* @see java.awt.Graphics#fillRect(int, int, int, int)
|
|
* @see java.awt.Graphics#drawRect
|
|
* @see java.awt.Graphics#setColor(java.awt.Color)
|
|
* @see java.awt.Graphics#setPaintMode
|
|
* @see java.awt.Graphics#setXORMode(java.awt.Color)
|
|
* @since 1.0
|
|
*/
|
|
public void clearRect(int x, int y, int width, int height) {
|
|
Rectangle2D.Float rect = new Rectangle2D.Float(x, y, width, height);
|
|
addDrawingRect(rect);
|
|
mPrintMetrics.clear(this);
|
|
}
|
|
|
|
/**
|
|
* Draws an outlined round-cornered rectangle using this graphics
|
|
* context's current color. The left and right edges of the rectangle
|
|
* are at {@code x} and <code>x + width</code>,
|
|
* respectively. The top and bottom edges of the rectangle are at
|
|
* {@code y} and <code>y + height</code>.
|
|
* @param x the <i>x</i> coordinate of the rectangle to be drawn.
|
|
* @param y the <i>y</i> coordinate of the rectangle to be drawn.
|
|
* @param width the width of the rectangle to be drawn.
|
|
* @param height the height of the rectangle to be drawn.
|
|
* @param arcWidth the horizontal diameter of the arc
|
|
* at the four corners.
|
|
* @param arcHeight the vertical diameter of the arc
|
|
* at the four corners.
|
|
* @see java.awt.Graphics#fillRoundRect
|
|
* @since 1.0
|
|
*/
|
|
public void drawRoundRect(int x, int y, int width, int height,
|
|
int arcWidth, int arcHeight) {
|
|
addStrokeShape(new RoundRectangle2D.Float(x, y, width, height, arcWidth, arcHeight));
|
|
mPrintMetrics.draw(this);
|
|
|
|
}
|
|
|
|
/**
|
|
* Fills the specified rounded corner rectangle with the current color.
|
|
* The left and right edges of the rectangle
|
|
* are at {@code x} and <code>x + width - 1</code>,
|
|
* respectively. The top and bottom edges of the rectangle are at
|
|
* {@code y} and <code>y + height - 1</code>.
|
|
* @param x the <i>x</i> coordinate of the rectangle to be filled.
|
|
* @param y the <i>y</i> coordinate of the rectangle to be filled.
|
|
* @param width the width of the rectangle to be filled.
|
|
* @param height the height of the rectangle to be filled.
|
|
* @param arcWidth the horizontal diameter
|
|
* of the arc at the four corners.
|
|
* @param arcHeight the vertical diameter
|
|
* of the arc at the four corners.
|
|
* @see java.awt.Graphics#drawRoundRect
|
|
* @since 1.0
|
|
*/
|
|
public void fillRoundRect(int x, int y, int width, int height,
|
|
int arcWidth, int arcHeight) {
|
|
Rectangle2D.Float rect = new Rectangle2D.Float(x, y,width, height);
|
|
addDrawingRect(rect);
|
|
mPrintMetrics.fill(this);
|
|
}
|
|
|
|
/**
|
|
* Draws the outline of an oval.
|
|
* The result is a circle or ellipse that fits within the
|
|
* rectangle specified by the {@code x}, {@code y},
|
|
* {@code width}, and {@code height} arguments.
|
|
* <p>
|
|
* The oval covers an area that is
|
|
* <code>width + 1</code> pixels wide
|
|
* and <code>height + 1</code> pixels tall.
|
|
* @param x the <i>x</i> coordinate of the upper left
|
|
* corner of the oval to be drawn.
|
|
* @param y the <i>y</i> coordinate of the upper left
|
|
* corner of the oval to be drawn.
|
|
* @param width the width of the oval to be drawn.
|
|
* @param height the height of the oval to be drawn.
|
|
* @see java.awt.Graphics#fillOval
|
|
* @since 1.0
|
|
*/
|
|
public void drawOval(int x, int y, int width, int height) {
|
|
addStrokeShape(new Rectangle2D.Float(x, y, width, height));
|
|
mPrintMetrics.draw(this);
|
|
}
|
|
|
|
/**
|
|
* Fills an oval bounded by the specified rectangle with the
|
|
* current color.
|
|
* @param x the <i>x</i> coordinate of the upper left corner
|
|
* of the oval to be filled.
|
|
* @param y the <i>y</i> coordinate of the upper left corner
|
|
* of the oval to be filled.
|
|
* @param width the width of the oval to be filled.
|
|
* @param height the height of the oval to be filled.
|
|
* @see java.awt.Graphics#drawOval
|
|
* @since 1.0
|
|
*/
|
|
public void fillOval(int x, int y, int width, int height) {
|
|
Rectangle2D.Float rect = new Rectangle2D.Float(x, y, width, height);
|
|
addDrawingRect(rect);
|
|
mPrintMetrics.fill(this);
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Draws the outline of a circular or elliptical arc
|
|
* covering the specified rectangle.
|
|
* <p>
|
|
* The resulting arc begins at {@code startAngle} and extends
|
|
* for {@code arcAngle} degrees, using the current color.
|
|
* Angles are interpreted such that 0 degrees
|
|
* is at the 3 o'clock position.
|
|
* A positive value indicates a counter-clockwise rotation
|
|
* while a negative value indicates a clockwise rotation.
|
|
* <p>
|
|
* The center of the arc is the center of the rectangle whose origin
|
|
* is (<i>x</i>, <i>y</i>) and whose size is specified by the
|
|
* {@code width} and {@code height} arguments.
|
|
* <p>
|
|
* The resulting arc covers an area
|
|
* <code>width + 1</code> pixels wide
|
|
* by <code>height + 1</code> pixels tall.
|
|
* @param x the <i>x</i> coordinate of the
|
|
* upper-left corner of the arc to be drawn.
|
|
* @param y the <i>y</i> coordinate of the
|
|
* upper-left corner of the arc to be drawn.
|
|
* @param width the width of the arc to be drawn.
|
|
* @param height the height of the arc to be drawn.
|
|
* @param startAngle the beginning angle.
|
|
* @param arcAngle the angular extent of the arc,
|
|
* relative to the start angle.
|
|
* @see java.awt.Graphics#fillArc
|
|
* @since 1.0
|
|
*/
|
|
public void drawArc(int x, int y, int width, int height,
|
|
int startAngle, int arcAngle) {
|
|
addStrokeShape(new Rectangle2D.Float(x, y, width, height));
|
|
mPrintMetrics.draw(this);
|
|
|
|
}
|
|
|
|
/**
|
|
* Fills a circular or elliptical arc covering the specified rectangle.
|
|
* <p>
|
|
* The resulting arc begins at {@code startAngle} and extends
|
|
* for {@code arcAngle} degrees.
|
|
* Angles are interpreted such that 0 degrees
|
|
* is at the 3 o'clock position.
|
|
* A positive value indicates a counter-clockwise rotation
|
|
* while a negative value indicates a clockwise rotation.
|
|
* <p>
|
|
* The center of the arc is the center of the rectangle whose origin
|
|
* is (<i>x</i>, <i>y</i>) and whose size is specified by the
|
|
* {@code width} and {@code height} arguments.
|
|
* <p>
|
|
* The resulting arc covers an area
|
|
* <code>width + 1</code> pixels wide
|
|
* by <code>height + 1</code> pixels tall.
|
|
* @param x the <i>x</i> coordinate of the
|
|
* upper-left corner of the arc to be filled.
|
|
* @param y the <i>y</i> coordinate of the
|
|
* upper-left corner of the arc to be filled.
|
|
* @param width the width of the arc to be filled.
|
|
* @param height the height of the arc to be filled.
|
|
* @param startAngle the beginning angle.
|
|
* @param arcAngle the angular extent of the arc,
|
|
* relative to the start angle.
|
|
* @see java.awt.Graphics#drawArc
|
|
* @since 1.0
|
|
*/
|
|
public void fillArc(int x, int y, int width, int height,
|
|
int startAngle, int arcAngle) {
|
|
Rectangle2D.Float rect = new Rectangle2D.Float(x, y,width, height);
|
|
addDrawingRect(rect);
|
|
mPrintMetrics.fill(this);
|
|
|
|
}
|
|
|
|
/**
|
|
* Draws a sequence of connected lines defined by
|
|
* arrays of <i>x</i> and <i>y</i> coordinates.
|
|
* Each pair of (<i>x</i>, <i>y</i>) coordinates defines a point.
|
|
* The figure is not closed if the first point
|
|
* differs from the last point.
|
|
* @param xPoints an array of <i>x</i> points
|
|
* @param yPoints an array of <i>y</i> points
|
|
* @param nPoints the total number of points
|
|
* @see java.awt.Graphics#drawPolygon(int[], int[], int)
|
|
* @since 1.1
|
|
*/
|
|
public void drawPolyline(int[] xPoints, int[] yPoints,
|
|
int nPoints) {
|
|
if (nPoints > 0) {
|
|
int x = xPoints[0];
|
|
int y = yPoints[0];
|
|
|
|
for (int i = 1; i < nPoints; i++) {
|
|
drawLine(x, y, xPoints[i], yPoints[i]);
|
|
x = xPoints[i];
|
|
y = yPoints[i];
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Draws a closed polygon defined by
|
|
* arrays of <i>x</i> and <i>y</i> coordinates.
|
|
* Each pair of (<i>x</i>, <i>y</i>) coordinates defines a point.
|
|
* <p>
|
|
* This method draws the polygon defined by {@code nPoint} line
|
|
* segments, where the first <code>nPoint - 1</code>
|
|
* line segments are line segments from
|
|
* <code>(xPoints[i - 1], yPoints[i - 1])</code>
|
|
* to <code>(xPoints[i], yPoints[i])</code>, for
|
|
* 1 ≤ <i>i</i> ≤ {@code nPoints}.
|
|
* The figure is automatically closed by drawing a line connecting
|
|
* the final point to the first point, if those points are different.
|
|
* @param xPoints an array of {@code x} coordinates.
|
|
* @param yPoints an array of {@code y} coordinates.
|
|
* @param nPoints the total number of points.
|
|
* @see java.awt.Graphics#fillPolygon
|
|
* @see java.awt.Graphics#drawPolyline
|
|
* @since 1.0
|
|
*/
|
|
public void drawPolygon(int[] xPoints, int[] yPoints,
|
|
int nPoints) {
|
|
if (nPoints > 0) {
|
|
drawPolyline(xPoints, yPoints, nPoints);
|
|
drawLine(xPoints[nPoints - 1], yPoints[nPoints - 1],
|
|
xPoints[0], yPoints[0]);
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Fills a closed polygon defined by
|
|
* arrays of <i>x</i> and <i>y</i> coordinates.
|
|
* <p>
|
|
* This method draws the polygon defined by {@code nPoint} line
|
|
* segments, where the first <code>nPoint - 1</code>
|
|
* line segments are line segments from
|
|
* <code>(xPoints[i - 1], yPoints[i - 1])</code>
|
|
* to <code>(xPoints[i], yPoints[i])</code>, for
|
|
* 1 ≤ <i>i</i> ≤ {@code nPoints}.
|
|
* The figure is automatically closed by drawing a line connecting
|
|
* the final point to the first point, if those points are different.
|
|
* <p>
|
|
* The area inside the polygon is defined using an
|
|
* even-odd fill rule, also known as the alternating rule.
|
|
* @param xPoints an array of {@code x} coordinates.
|
|
* @param yPoints an array of {@code y} coordinates.
|
|
* @param nPoints the total number of points.
|
|
* @see java.awt.Graphics#drawPolygon(int[], int[], int)
|
|
* @since 1.0
|
|
*/
|
|
public void fillPolygon(int[] xPoints, int[] yPoints,
|
|
int nPoints) {
|
|
if (nPoints > 0) {
|
|
int minX = xPoints[0];
|
|
int minY = yPoints[0];
|
|
int maxX = xPoints[0];
|
|
int maxY = yPoints[0];
|
|
|
|
for (int i = 1; i < nPoints; i++) {
|
|
|
|
if (xPoints[i] < minX) {
|
|
minX = xPoints[i];
|
|
} else if (xPoints[i] > maxX) {
|
|
maxX = xPoints[i];
|
|
}
|
|
|
|
if (yPoints[i] < minY) {
|
|
minY = yPoints[i];
|
|
} else if (yPoints[i] > maxY) {
|
|
maxY = yPoints[i];
|
|
}
|
|
}
|
|
|
|
addDrawingRect(minX, minY, maxX - minX, maxY - minY);
|
|
}
|
|
|
|
mPrintMetrics.fill(this);
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Draws the text given by the specified string, using this
|
|
* graphics context's current font and color. The baseline of the
|
|
* first character is at position (<i>x</i>, <i>y</i>) in this
|
|
* graphics context's coordinate system.
|
|
* @param str the string to be drawn.
|
|
* @param x the <i>x</i> coordinate.
|
|
* @param y the <i>y</i> coordinate.
|
|
* @see java.awt.Graphics#drawBytes
|
|
* @see java.awt.Graphics#drawChars
|
|
* @since 1.0
|
|
*/
|
|
public void drawString(String str, int x, int y) {
|
|
|
|
drawString(str, (float)x, (float)y);
|
|
}
|
|
|
|
/**
|
|
* Draws the text given by the specified iterator, using this
|
|
* graphics context's current color. The iterator has to specify a font
|
|
* for each character. The baseline of the
|
|
* first character is at position (<i>x</i>, <i>y</i>) in this
|
|
* graphics context's coordinate system.
|
|
* The rendering attributes applied include the clip, transform,
|
|
* paint or color, and composite attributes.
|
|
* For characters in script systems such as Hebrew and Arabic,
|
|
* the glyphs may be draw from right to left, in which case the
|
|
* coordinate supplied is the location of the leftmost character
|
|
* on the baseline.
|
|
* @param iterator the iterator whose text is to be drawn
|
|
* @param x,y the coordinates where the iterator's text should be drawn.
|
|
* @see #setPaint
|
|
* @see java.awt.Graphics#setColor
|
|
* @see #setTransform
|
|
* @see #setComposite
|
|
* @see #setClip
|
|
*/
|
|
public void drawString(AttributedCharacterIterator iterator,
|
|
int x, int y) {
|
|
|
|
drawString(iterator, (float)x, (float)y);
|
|
}
|
|
|
|
/**
|
|
* Draws the text given by the specified iterator, using this
|
|
* graphics context's current color. The iterator has to specify a font
|
|
* for each character. The baseline of the
|
|
* first character is at position (<i>x</i>, <i>y</i>) in this
|
|
* graphics context's coordinate system.
|
|
* The rendering attributes applied include the clip, transform,
|
|
* paint or color, and composite attributes.
|
|
* For characters in script systems such as Hebrew and Arabic,
|
|
* the glyphs may be draw from right to left, in which case the
|
|
* coordinate supplied is the location of the leftmost character
|
|
* on the baseline.
|
|
* @param iterator the iterator whose text is to be drawn
|
|
* @param x,y the coordinates where the iterator's text should be drawn.
|
|
* @see #setPaint
|
|
* @see java.awt.Graphics#setColor
|
|
* @see #setTransform
|
|
* @see #setComposite
|
|
* @see #setClip
|
|
*/
|
|
public void drawString(AttributedCharacterIterator iterator,
|
|
float x, float y) {
|
|
if (iterator == null) {
|
|
throw new
|
|
NullPointerException("AttributedCharacterIterator is null");
|
|
}
|
|
|
|
TextLayout layout = new TextLayout(iterator, getFontRenderContext());
|
|
layout.draw(this, x, y);
|
|
}
|
|
|
|
|
|
/**
|
|
* Draws as much of the specified image as is currently available.
|
|
* The image is drawn with its top-left corner at
|
|
* (<i>x</i>, <i>y</i>) in this graphics context's coordinate
|
|
* space. Transparent pixels in the image do not affect whatever
|
|
* pixels are already there.
|
|
* <p>
|
|
* This method returns immediately in all cases, even if the
|
|
* complete image has not yet been loaded, and it has not been dithered
|
|
* and converted for the current output device.
|
|
* <p>
|
|
* If the image has not yet been completely loaded, then
|
|
* {@code drawImage} returns {@code false}. As more of
|
|
* the image becomes available, the process that draws the image notifies
|
|
* the specified image observer.
|
|
* @param img the specified image to be drawn.
|
|
* @param x the <i>x</i> coordinate.
|
|
* @param y the <i>y</i> coordinate.
|
|
* @param observer object to be notified as more of
|
|
* the image is converted.
|
|
* @see java.awt.Image
|
|
* @see java.awt.image.ImageObserver
|
|
* @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
|
|
* @since 1.0
|
|
*/
|
|
public boolean drawImage(Image img, int x, int y,
|
|
ImageObserver observer) {
|
|
|
|
if (img == null) {
|
|
return true;
|
|
}
|
|
|
|
/* The ImageWaiter creation does not return until the
|
|
* image is loaded.
|
|
*/
|
|
ImageWaiter dim = new ImageWaiter(img);
|
|
|
|
addDrawingRect(x, y, dim.getWidth(), dim.getHeight());
|
|
mPrintMetrics.drawImage(this, img);
|
|
|
|
return mGraphics.drawImage(img, x, y, observer);
|
|
}
|
|
|
|
|
|
/**
|
|
* Draws as much of the specified image as has already been scaled
|
|
* to fit inside the specified rectangle.
|
|
* <p>
|
|
* The image is drawn inside the specified rectangle of this
|
|
* graphics context's coordinate space, and is scaled if
|
|
* necessary. Transparent pixels do not affect whatever pixels
|
|
* are already there.
|
|
* <p>
|
|
* This method returns immediately in all cases, even if the
|
|
* entire image has not yet been scaled, dithered, and converted
|
|
* for the current output device.
|
|
* If the current output representation is not yet complete, then
|
|
* {@code drawImage} returns {@code false}. As more of
|
|
* the image becomes available, the process that draws the image notifies
|
|
* the image observer by calling its {@code imageUpdate} method.
|
|
* <p>
|
|
* A scaled version of an image will not necessarily be
|
|
* available immediately just because an unscaled version of the
|
|
* image has been constructed for this output device. Each size of
|
|
* the image may be cached separately and generated from the original
|
|
* data in a separate image production sequence.
|
|
* @param img the specified image to be drawn.
|
|
* @param x the <i>x</i> coordinate.
|
|
* @param y the <i>y</i> coordinate.
|
|
* @param width the width of the rectangle.
|
|
* @param height the height of the rectangle.
|
|
* @param observer object to be notified as more of
|
|
* the image is converted.
|
|
* @see java.awt.Image
|
|
* @see java.awt.image.ImageObserver
|
|
* @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
|
|
* @since 1.0
|
|
*/
|
|
public boolean drawImage(Image img, int x, int y,
|
|
int width, int height,
|
|
ImageObserver observer) {
|
|
|
|
if (img == null) {
|
|
return true;
|
|
}
|
|
addDrawingRect(x, y, width, height);
|
|
mPrintMetrics.drawImage(this, img);
|
|
|
|
return mGraphics.drawImage(img, x, y, width, height, observer);
|
|
|
|
}
|
|
|
|
/**
|
|
* Draws as much of the specified image as is currently available.
|
|
* The image is drawn with its top-left corner at
|
|
* (<i>x</i>, <i>y</i>) in this graphics context's coordinate
|
|
* space. Transparent pixels are drawn in the specified
|
|
* background color.
|
|
* <p>
|
|
* This operation is equivalent to filling a rectangle of the
|
|
* width and height of the specified image with the given color and then
|
|
* drawing the image on top of it, but possibly more efficient.
|
|
* <p>
|
|
* This method returns immediately in all cases, even if the
|
|
* complete image has not yet been loaded, and it has not been dithered
|
|
* and converted for the current output device.
|
|
* <p>
|
|
* If the image has not yet been completely loaded, then
|
|
* {@code drawImage} returns {@code false}. As more of
|
|
* the image becomes available, the process that draws the image notifies
|
|
* the specified image observer.
|
|
* @param img the specified image to be drawn.
|
|
* @param x the <i>x</i> coordinate.
|
|
* @param y the <i>y</i> coordinate.
|
|
* @param bgcolor the background color to paint under the
|
|
* non-opaque portions of the image.
|
|
* @param observer object to be notified as more of
|
|
* the image is converted.
|
|
* @see java.awt.Image
|
|
* @see java.awt.image.ImageObserver
|
|
* @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
|
|
* @since 1.0
|
|
*/
|
|
public boolean drawImage(Image img, int x, int y,
|
|
Color bgcolor,
|
|
ImageObserver observer) {
|
|
|
|
if (img == null) {
|
|
return true;
|
|
}
|
|
|
|
/* The ImageWaiter creation does not return until the
|
|
* image is loaded.
|
|
*/
|
|
ImageWaiter dim = new ImageWaiter(img);
|
|
|
|
addDrawingRect(x, y, dim.getWidth(), dim.getHeight());
|
|
mPrintMetrics.drawImage(this, img);
|
|
|
|
return mGraphics.drawImage(img, x, y, bgcolor, observer);
|
|
}
|
|
|
|
|
|
/**
|
|
* Draws as much of the specified image as has already been scaled
|
|
* to fit inside the specified rectangle.
|
|
* <p>
|
|
* The image is drawn inside the specified rectangle of this
|
|
* graphics context's coordinate space, and is scaled if
|
|
* necessary. Transparent pixels are drawn in the specified
|
|
* background color.
|
|
* This operation is equivalent to filling a rectangle of the
|
|
* width and height of the specified image with the given color and then
|
|
* drawing the image on top of it, but possibly more efficient.
|
|
* <p>
|
|
* This method returns immediately in all cases, even if the
|
|
* entire image has not yet been scaled, dithered, and converted
|
|
* for the current output device.
|
|
* If the current output representation is not yet complete then
|
|
* {@code drawImage} returns {@code false}. As more of
|
|
* the image becomes available, the process that draws the image notifies
|
|
* the specified image observer.
|
|
* <p>
|
|
* A scaled version of an image will not necessarily be
|
|
* available immediately just because an unscaled version of the
|
|
* image has been constructed for this output device. Each size of
|
|
* the image may be cached separately and generated from the original
|
|
* data in a separate image production sequence.
|
|
* @param img the specified image to be drawn.
|
|
* @param x the <i>x</i> coordinate.
|
|
* @param y the <i>y</i> coordinate.
|
|
* @param width the width of the rectangle.
|
|
* @param height the height of the rectangle.
|
|
* @param bgcolor the background color to paint under the
|
|
* non-opaque portions of the image.
|
|
* @param observer object to be notified as more of
|
|
* the image is converted.
|
|
* @see java.awt.Image
|
|
* @see java.awt.image.ImageObserver
|
|
* @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
|
|
* @since 1.0
|
|
*/
|
|
public boolean drawImage(Image img, int x, int y,
|
|
int width, int height,
|
|
Color bgcolor,
|
|
ImageObserver observer) {
|
|
|
|
if (img == null) {
|
|
return true;
|
|
}
|
|
|
|
addDrawingRect(x, y, width, height);
|
|
mPrintMetrics.drawImage(this, img);
|
|
|
|
return mGraphics.drawImage(img, x, y, width, height, bgcolor, observer);
|
|
|
|
}
|
|
|
|
/**
|
|
* Draws as much of the specified area of the specified image as is
|
|
* currently available, scaling it on the fly to fit inside the
|
|
* specified area of the destination drawable surface. Transparent pixels
|
|
* do not affect whatever pixels are already there.
|
|
* <p>
|
|
* This method returns immediately in all cases, even if the
|
|
* image area to be drawn has not yet been scaled, dithered, and converted
|
|
* for the current output device.
|
|
* If the current output representation is not yet complete then
|
|
* {@code drawImage} returns {@code false}. As more of
|
|
* the image becomes available, the process that draws the image notifies
|
|
* the specified image observer.
|
|
* <p>
|
|
* This method always uses the unscaled version of the image
|
|
* to render the scaled rectangle and performs the required
|
|
* scaling on the fly. It does not use a cached, scaled version
|
|
* of the image for this operation. Scaling of the image from source
|
|
* to destination is performed such that the first coordinate
|
|
* of the source rectangle is mapped to the first coordinate of
|
|
* the destination rectangle, and the second source coordinate is
|
|
* mapped to the second destination coordinate. The subimage is
|
|
* scaled and flipped as needed to preserve those mappings.
|
|
* @param img the specified image to be drawn
|
|
* @param dx1 the <i>x</i> coordinate of the first corner of the
|
|
* destination rectangle.
|
|
* @param dy1 the <i>y</i> coordinate of the first corner of the
|
|
* destination rectangle.
|
|
* @param dx2 the <i>x</i> coordinate of the second corner of the
|
|
* destination rectangle.
|
|
* @param dy2 the <i>y</i> coordinate of the second corner of the
|
|
* destination rectangle.
|
|
* @param sx1 the <i>x</i> coordinate of the first corner of the
|
|
* source rectangle.
|
|
* @param sy1 the <i>y</i> coordinate of the first corner of the
|
|
* source rectangle.
|
|
* @param sx2 the <i>x</i> coordinate of the second corner of the
|
|
* source rectangle.
|
|
* @param sy2 the <i>y</i> coordinate of the second corner of the
|
|
* source rectangle.
|
|
* @param observer object to be notified as more of the image is
|
|
* scaled and converted.
|
|
* @see java.awt.Image
|
|
* @see java.awt.image.ImageObserver
|
|
* @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
|
|
* @since 1.1
|
|
*/
|
|
public boolean drawImage(Image img,
|
|
int dx1, int dy1, int dx2, int dy2,
|
|
int sx1, int sy1, int sx2, int sy2,
|
|
ImageObserver observer) {
|
|
|
|
if (img == null) {
|
|
return true;
|
|
}
|
|
|
|
int width = dx2 - dx1;
|
|
int height = dy2 - dy1;
|
|
|
|
addDrawingRect(dx1, dy1, width, height);
|
|
mPrintMetrics.drawImage(this, img);
|
|
|
|
return mGraphics.drawImage(img, dx1, dy1, dx2, dy2,
|
|
sx1, sy1, sx2, sy2, observer);
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Draws as much of the specified area of the specified image as is
|
|
* currently available, scaling it on the fly to fit inside the
|
|
* specified area of the destination drawable surface.
|
|
* <p>
|
|
* Transparent pixels are drawn in the specified background color.
|
|
* This operation is equivalent to filling a rectangle of the
|
|
* width and height of the specified image with the given color and then
|
|
* drawing the image on top of it, but possibly more efficient.
|
|
* <p>
|
|
* This method returns immediately in all cases, even if the
|
|
* image area to be drawn has not yet been scaled, dithered, and converted
|
|
* for the current output device.
|
|
* If the current output representation is not yet complete then
|
|
* {@code drawImage} returns {@code false}. As more of
|
|
* the image becomes available, the process that draws the image notifies
|
|
* the specified image observer.
|
|
* <p>
|
|
* This method always uses the unscaled version of the image
|
|
* to render the scaled rectangle and performs the required
|
|
* scaling on the fly. It does not use a cached, scaled version
|
|
* of the image for this operation. Scaling of the image from source
|
|
* to destination is performed such that the first coordinate
|
|
* of the source rectangle is mapped to the first coordinate of
|
|
* the destination rectangle, and the second source coordinate is
|
|
* mapped to the second destination coordinate. The subimage is
|
|
* scaled and flipped as needed to preserve those mappings.
|
|
* @param img the specified image to be drawn
|
|
* @param dx1 the <i>x</i> coordinate of the first corner of the
|
|
* destination rectangle.
|
|
* @param dy1 the <i>y</i> coordinate of the first corner of the
|
|
* destination rectangle.
|
|
* @param dx2 the <i>x</i> coordinate of the second corner of the
|
|
* destination rectangle.
|
|
* @param dy2 the <i>y</i> coordinate of the second corner of the
|
|
* destination rectangle.
|
|
* @param sx1 the <i>x</i> coordinate of the first corner of the
|
|
* source rectangle.
|
|
* @param sy1 the <i>y</i> coordinate of the first corner of the
|
|
* source rectangle.
|
|
* @param sx2 the <i>x</i> coordinate of the second corner of the
|
|
* source rectangle.
|
|
* @param sy2 the <i>y</i> coordinate of the second corner of the
|
|
* source rectangle.
|
|
* @param bgcolor the background color to paint under the
|
|
* non-opaque portions of the image.
|
|
* @param observer object to be notified as more of the image is
|
|
* scaled and converted.
|
|
* @see java.awt.Image
|
|
* @see java.awt.image.ImageObserver
|
|
* @see java.awt.image.ImageObserver#imageUpdate(java.awt.Image, int, int, int, int, int)
|
|
* @since 1.1
|
|
*/
|
|
public boolean drawImage(Image img,
|
|
int dx1, int dy1, int dx2, int dy2,
|
|
int sx1, int sy1, int sx2, int sy2,
|
|
Color bgcolor,
|
|
ImageObserver observer) {
|
|
|
|
if (img == null) {
|
|
return true;
|
|
}
|
|
|
|
int width = dx2 - dx1;
|
|
int height = dy2 - dy1;
|
|
|
|
addDrawingRect(dx1, dy1, width, height);
|
|
mPrintMetrics.drawImage(this, img);
|
|
|
|
return mGraphics.drawImage(img, dx1, dy1, dx2, dy2,
|
|
sx1, sy1, sx2, sy2, bgcolor, observer);
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Draws an image, applying a transform from image space into user space
|
|
* before drawing.
|
|
* The transformation from user space into device space is done with
|
|
* the current transform in the Graphics2D.
|
|
* The given transformation is applied to the image before the
|
|
* transform attribute in the Graphics2D state is applied.
|
|
* The rendering attributes applied include the clip, transform,
|
|
* and composite attributes. Note that the result is
|
|
* undefined, if the given transform is noninvertible.
|
|
* @param img The image to be drawn.
|
|
* @param xform The transformation from image space into user space.
|
|
* @see #transform
|
|
* @see #setTransform
|
|
* @see #setComposite
|
|
* @see #clip
|
|
* @see #setClip
|
|
*/
|
|
public void drawRenderedImage(RenderedImage img,
|
|
AffineTransform xform) {
|
|
|
|
if (img == null) {
|
|
return;
|
|
}
|
|
|
|
mPrintMetrics.drawImage(this, img);
|
|
mDrawingArea.addInfinite();
|
|
}
|
|
|
|
|
|
public void drawRenderableImage(RenderableImage img,
|
|
AffineTransform xform) {
|
|
|
|
if (img == null) {
|
|
return;
|
|
}
|
|
|
|
mPrintMetrics.drawImage(this, img);
|
|
mDrawingArea.addInfinite();
|
|
}
|
|
|
|
/**
|
|
* Disposes of this graphics context and releases
|
|
* any system resources that it is using.
|
|
* A {@code Graphics} object cannot be used after
|
|
* {@code dispose} has been called.
|
|
* <p>
|
|
* When a Java program runs, a large number of {@code Graphics}
|
|
* objects can be created within a short time frame.
|
|
* Although the finalization process of the garbage collector
|
|
* also disposes of the same system resources, it is preferable
|
|
* to manually free the associated resources by calling this
|
|
* method rather than to rely on a finalization process which
|
|
* may not run to completion for a long period of time.
|
|
* <p>
|
|
* Graphics objects which are provided as arguments to the
|
|
* {@code paint} and {@code update} methods
|
|
* of components are automatically released by the system when
|
|
* those methods return. For efficiency, programmers should
|
|
* call {@code dispose} when finished using
|
|
* a {@code Graphics} object only if it was created
|
|
* directly from a component or another {@code Graphics} object.
|
|
* @see java.awt.Graphics#finalize
|
|
* @see java.awt.Component#paint
|
|
* @see java.awt.Component#update
|
|
* @see java.awt.Component#getGraphics
|
|
* @see java.awt.Graphics#create
|
|
* @since 1.0
|
|
*/
|
|
public void dispose() {
|
|
mGraphics.dispose();
|
|
}
|
|
|
|
/**
|
|
* Empty finalizer as no clean up needed here.
|
|
*/
|
|
@SuppressWarnings("removal")
|
|
public void finalize() {
|
|
}
|
|
|
|
/* The Delegated Graphics2D Methods */
|
|
|
|
/**
|
|
* Strokes the outline of a Shape using the settings of the current
|
|
* graphics state. The rendering attributes applied include the
|
|
* clip, transform, paint or color, composite and stroke attributes.
|
|
* @param s The shape to be drawn.
|
|
* @see #setStroke
|
|
* @see #setPaint
|
|
* @see java.awt.Graphics#setColor
|
|
* @see #transform
|
|
* @see #setTransform
|
|
* @see #clip
|
|
* @see #setClip
|
|
* @see #setComposite
|
|
*/
|
|
public void draw(Shape s) {
|
|
addStrokeShape(s);
|
|
mPrintMetrics.draw(this);
|
|
}
|
|
|
|
|
|
/**
|
|
* Draws an image, applying a transform from image space into user space
|
|
* before drawing.
|
|
* The transformation from user space into device space is done with
|
|
* the current transform in the Graphics2D.
|
|
* The given transformation is applied to the image before the
|
|
* transform attribute in the Graphics2D state is applied.
|
|
* The rendering attributes applied include the clip, transform,
|
|
* and composite attributes. Note that the result is
|
|
* undefined, if the given transform is noninvertible.
|
|
* @param img The image to be drawn.
|
|
* @param xform The transformation from image space into user space.
|
|
* @param obs The image observer to be notified as more of the image
|
|
* is converted.
|
|
* @see #transform
|
|
* @see #setTransform
|
|
* @see #setComposite
|
|
* @see #clip
|
|
* @see #setClip
|
|
*/
|
|
public boolean drawImage(Image img,
|
|
AffineTransform xform,
|
|
ImageObserver obs) {
|
|
|
|
if (img == null) {
|
|
return true;
|
|
}
|
|
|
|
mDrawingArea.addInfinite();
|
|
mPrintMetrics.drawImage(this, img);
|
|
|
|
return mGraphics.drawImage(img, xform, obs);
|
|
|
|
|
|
// if (mDrawingArea[0] != null) {
|
|
// Rectangle2D.Double bbox = new Rectangle2D.Double();
|
|
// Point2D leftTop = new Point2D.Double(0, 0);
|
|
// Point2D rightBottom = new Point2D.Double(getImageWidth(img),
|
|
// getImageHeight(img));
|
|
|
|
// xform.transform(leftTop, leftTop);
|
|
// xform.transform(rightBottom, rightBottom);
|
|
|
|
// bbox.setBoundsFromDiagonal(leftTop, rightBottom);
|
|
// addDrawingRect(bbox);
|
|
|
|
// }
|
|
}
|
|
|
|
|
|
/**
|
|
* Draws a BufferedImage that is filtered with a BufferedImageOp.
|
|
* The rendering attributes applied include the clip, transform
|
|
* and composite attributes. This is equivalent to:
|
|
* <pre>
|
|
* img1 = op.filter(img, null);
|
|
* drawImage(img1, new AffineTransform(1f,0f,0f,1f,x,y), null);
|
|
* </pre>
|
|
* @param op The filter to be applied to the image before drawing.
|
|
* @param img The BufferedImage to be drawn.
|
|
* @param x,y The location in user space where the image should be drawn.
|
|
* @see #transform
|
|
* @see #setTransform
|
|
* @see #setComposite
|
|
* @see #clip
|
|
* @see #setClip
|
|
*/
|
|
public void drawImage(BufferedImage img,
|
|
BufferedImageOp op,
|
|
int x,
|
|
int y) {
|
|
|
|
if (img == null) {
|
|
return;
|
|
}
|
|
|
|
mPrintMetrics.drawImage(this, (RenderedImage) img);
|
|
mDrawingArea.addInfinite();
|
|
}
|
|
|
|
|
|
/**
|
|
* Draws a string of text.
|
|
* The rendering attributes applied include the clip, transform,
|
|
* paint or color, font and composite attributes.
|
|
* @param str The string to be drawn.
|
|
* @param x,y The coordinates where the string should be drawn.
|
|
* @see #setPaint
|
|
* @see java.awt.Graphics#setColor
|
|
* @see java.awt.Graphics#setFont
|
|
* @see #transform
|
|
* @see #setTransform
|
|
* @see #setComposite
|
|
* @see #clip
|
|
* @see #setClip
|
|
*/
|
|
public void drawString(String str,
|
|
float x,
|
|
float y) {
|
|
|
|
if (str.length() == 0) {
|
|
return;
|
|
}
|
|
/* Logical bounds close enough and is used for GlyphVector */
|
|
FontRenderContext frc = getFontRenderContext();
|
|
Rectangle2D bbox = getFont().getStringBounds(str, frc);
|
|
addDrawingRect(bbox, x, y);
|
|
mPrintMetrics.drawText(this);
|
|
}
|
|
|
|
/**
|
|
* Draws a GlyphVector.
|
|
* The rendering attributes applied include the clip, transform,
|
|
* paint or color, and composite attributes. The GlyphVector specifies
|
|
* individual glyphs from a Font.
|
|
* @param g The GlyphVector to be drawn.
|
|
* @param x,y The coordinates where the glyphs should be drawn.
|
|
* @see #setPaint
|
|
* @see java.awt.Graphics#setColor
|
|
* @see #transform
|
|
* @see #setTransform
|
|
* @see #setComposite
|
|
* @see #clip
|
|
* @see #setClip
|
|
*/
|
|
public void drawGlyphVector(GlyphVector g,
|
|
float x,
|
|
float y) {
|
|
|
|
Rectangle2D bbox = g.getLogicalBounds();
|
|
addDrawingRect(bbox, x, y);
|
|
mPrintMetrics.drawText(this);
|
|
|
|
}
|
|
|
|
/**
|
|
* Fills the interior of a Shape using the settings of the current
|
|
* graphics state. The rendering attributes applied include the
|
|
* clip, transform, paint or color, and composite.
|
|
* @see #setPaint
|
|
* @see java.awt.Graphics#setColor
|
|
* @see #transform
|
|
* @see #setTransform
|
|
* @see #setComposite
|
|
* @see #clip
|
|
* @see #setClip
|
|
*/
|
|
public void fill(Shape s) {
|
|
addDrawingRect(s.getBounds());
|
|
mPrintMetrics.fill(this);
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Checks to see if the outline of a Shape intersects the specified
|
|
* Rectangle in device space.
|
|
* The rendering attributes taken into account include the
|
|
* clip, transform, and stroke attributes.
|
|
* @param rect The area in device space to check for a hit.
|
|
* @param s The shape to check for a hit.
|
|
* @param onStroke Flag to choose between testing the stroked or
|
|
* the filled shape.
|
|
* @return True if there is a hit, false otherwise.
|
|
* @see #setStroke
|
|
* @see #fill
|
|
* @see #draw
|
|
* @see #transform
|
|
* @see #setTransform
|
|
* @see #clip
|
|
* @see #setClip
|
|
*/
|
|
public boolean hit(Rectangle rect,
|
|
Shape s,
|
|
boolean onStroke) {
|
|
|
|
return mGraphics.hit(rect, s, onStroke);
|
|
}
|
|
|
|
/**
|
|
* Sets the Composite in the current graphics state. Composite is used
|
|
* in all drawing methods such as drawImage, drawString, draw,
|
|
* and fill. It specifies how new pixels are to be combined with
|
|
* the existing pixels on the graphics device in the rendering process.
|
|
* @param comp The Composite object to be used for drawing.
|
|
* @see java.awt.Graphics#setXORMode
|
|
* @see java.awt.Graphics#setPaintMode
|
|
* @see java.awt.AlphaComposite
|
|
*/
|
|
public void setComposite(Composite comp) {
|
|
mGraphics.setComposite(comp);
|
|
}
|
|
|
|
|
|
/**
|
|
* Sets the Paint in the current graphics state.
|
|
* @param paint The Paint object to be used to generate color in
|
|
* the rendering process.
|
|
* @see java.awt.Graphics#setColor
|
|
* @see java.awt.GradientPaint
|
|
* @see java.awt.TexturePaint
|
|
*/
|
|
public void setPaint(Paint paint) {
|
|
mGraphics.setPaint(paint);
|
|
}
|
|
|
|
/**
|
|
* Sets the Stroke in the current graphics state.
|
|
* @param s The Stroke object to be used to stroke a Shape in
|
|
* the rendering process.
|
|
* @see BasicStroke
|
|
*/
|
|
public void setStroke(Stroke s) {
|
|
mGraphics.setStroke(s);
|
|
}
|
|
|
|
/**
|
|
* Sets the preferences for the rendering algorithms.
|
|
* Hint categories include controls for rendering quality and
|
|
* overall time/quality trade-off in the rendering process.
|
|
* @param hintCategory The category of hint to be set.
|
|
* @param hintValue The value indicating preferences for the specified
|
|
* hint category.
|
|
* @see RenderingHints
|
|
*/
|
|
public void setRenderingHint(Key hintCategory, Object hintValue) {
|
|
mGraphics.setRenderingHint(hintCategory, hintValue);
|
|
}
|
|
|
|
/**
|
|
* Returns the preferences for the rendering algorithms.
|
|
* @param hintCategory The category of hint to be set.
|
|
* @return The preferences for rendering algorithms.
|
|
* @see RenderingHints
|
|
*/
|
|
public Object getRenderingHint(Key hintCategory) {
|
|
return mGraphics.getRenderingHint(hintCategory);
|
|
}
|
|
|
|
/**
|
|
* Sets the preferences for the rendering algorithms.
|
|
* Hint categories include controls for rendering quality and
|
|
* overall time/quality trade-off in the rendering process.
|
|
* @param hints The rendering hints to be set
|
|
* @see RenderingHints
|
|
*/
|
|
public void setRenderingHints(Map<?,?> hints) {
|
|
mGraphics.setRenderingHints(hints);
|
|
}
|
|
|
|
/**
|
|
* Adds a number of preferences for the rendering algorithms.
|
|
* Hint categories include controls for rendering quality and
|
|
* overall time/quality trade-off in the rendering process.
|
|
* @param hints The rendering hints to be set
|
|
* @see RenderingHints
|
|
*/
|
|
public void addRenderingHints(Map<?,?> hints) {
|
|
mGraphics.addRenderingHints(hints);
|
|
}
|
|
|
|
/**
|
|
* Gets the preferences for the rendering algorithms.
|
|
* Hint categories include controls for rendering quality and
|
|
* overall time/quality trade-off in the rendering process.
|
|
* @see RenderingHints
|
|
*/
|
|
public RenderingHints getRenderingHints() {
|
|
return mGraphics.getRenderingHints();
|
|
}
|
|
|
|
/**
|
|
* Composes a Transform object with the transform in this
|
|
* Graphics2D according to the rule last-specified-first-applied.
|
|
* If the currrent transform is Cx, the result of composition
|
|
* with Tx is a new transform Cx'. Cx' becomes the current
|
|
* transform for this Graphics2D.
|
|
* Transforming a point p by the updated transform Cx' is
|
|
* equivalent to first transforming p by Tx and then transforming
|
|
* the result by the original transform Cx. In other words,
|
|
* Cx'(p) = Cx(Tx(p)).
|
|
* A copy of the Tx is made, if necessary, so further
|
|
* modifications to Tx do not affect rendering.
|
|
* @param Tx The Transform object to be composed with the current
|
|
* transform.
|
|
* @see #setTransform
|
|
* @see AffineTransform
|
|
*/
|
|
public void transform(AffineTransform Tx) {
|
|
mGraphics.transform(Tx);
|
|
}
|
|
|
|
/**
|
|
* Sets the Transform in the current graphics state.
|
|
* @param Tx The Transform object to be used in the rendering process.
|
|
* @see #transform
|
|
* @see AffineTransform
|
|
*/
|
|
public void setTransform(AffineTransform Tx) {
|
|
mGraphics.setTransform(Tx);
|
|
}
|
|
|
|
/**
|
|
* Returns the current Transform in the Graphics2D state.
|
|
* @see #transform
|
|
* @see #setTransform
|
|
*/
|
|
public AffineTransform getTransform() {
|
|
return mGraphics.getTransform();
|
|
}
|
|
|
|
/**
|
|
* Returns the current Paint in the Graphics2D state.
|
|
* @see #setPaint
|
|
* @see java.awt.Graphics#setColor
|
|
*/
|
|
public Paint getPaint() {
|
|
return mGraphics.getPaint();
|
|
}
|
|
|
|
/**
|
|
* Returns the current Composite in the Graphics2D state.
|
|
* @see #setComposite
|
|
*/
|
|
public Composite getComposite() {
|
|
return mGraphics.getComposite();
|
|
}
|
|
|
|
/**
|
|
* Sets the background color in this context used for clearing a region.
|
|
* When Graphics2D is constructed for a component, the backgroung color is
|
|
* inherited from the component. Setting the background color in the
|
|
* Graphics2D context only affects the subsequent clearRect() calls and
|
|
* not the background color of the component. To change the background
|
|
* of the component, use appropriate methods of the component.
|
|
* @param color The background color that should be used in
|
|
* subsequent calls to clearRect().
|
|
* @see #getBackground
|
|
* @see Graphics#clearRect
|
|
*/
|
|
public void setBackground(Color color) {
|
|
mGraphics.setBackground(color);
|
|
}
|
|
|
|
/**
|
|
* Returns the background color used for clearing a region.
|
|
* @see #setBackground
|
|
*/
|
|
public Color getBackground() {
|
|
return mGraphics.getBackground();
|
|
}
|
|
|
|
/**
|
|
* Returns the current Stroke in the Graphics2D state.
|
|
* @see #setStroke
|
|
*/
|
|
public Stroke getStroke() {
|
|
return mGraphics.getStroke();
|
|
}
|
|
|
|
/**
|
|
* Intersects the current clip with the interior of the specified Shape
|
|
* and sets the current clip to the resulting intersection.
|
|
* The indicated shape is transformed with the current transform in the
|
|
* Graphics2D state before being intersected with the current clip.
|
|
* This method is used to make the current clip smaller.
|
|
* To make the clip larger, use any setClip method.
|
|
* @param s The Shape to be intersected with the current clip.
|
|
*/
|
|
public void clip(Shape s) {
|
|
mGraphics.clip(s);
|
|
}
|
|
|
|
/**
|
|
* Return true if the Rectangle {@code rect}
|
|
* intersects the area into which the application
|
|
* has drawn.
|
|
*/
|
|
public boolean hitsDrawingArea(Rectangle rect) {
|
|
|
|
return mDrawingArea.intersects((float) rect.getMinY(),
|
|
(float) rect.getMaxY());
|
|
}
|
|
|
|
/**
|
|
* Return the object holding the summary of the
|
|
* drawing done by the printing application.
|
|
*/
|
|
public PeekMetrics getMetrics() {
|
|
return mPrintMetrics;
|
|
}
|
|
|
|
/* Support Routines for Calculating the Drawing Area */
|
|
|
|
/**
|
|
* Shift the rectangle 'rect' to the position ('x', 'y')
|
|
* and add the resulting rectangle to the area representing
|
|
* the part of the page which is drawn into.
|
|
*/
|
|
private void addDrawingRect(Rectangle2D rect, float x, float y) {
|
|
|
|
addDrawingRect((float) (rect.getX() + x),
|
|
(float) (rect.getY() + y),
|
|
(float) rect.getWidth(),
|
|
(float) rect.getHeight());
|
|
|
|
}
|
|
|
|
private void addDrawingRect(float x, float y, float width, float height) {
|
|
|
|
Rectangle2D.Float bbox = new Rectangle2D.Float(x, y, width, height);
|
|
addDrawingRect(bbox);
|
|
}
|
|
|
|
/**
|
|
* Add the rectangle 'rect' to the area representing
|
|
* the part of the page which is drawn into.
|
|
*/
|
|
private void addDrawingRect(Rectangle2D rect) {
|
|
|
|
/* For testing purposes the following line can be uncommented.
|
|
When uncommented it causes the entire page to be rasterized
|
|
thus eliminating errors caused by a faulty bounding box
|
|
calculation.
|
|
*/
|
|
//mDrawingArea.addInfinite();
|
|
|
|
|
|
|
|
AffineTransform matrix = getTransform();
|
|
|
|
Shape transShape = matrix.createTransformedShape(rect);
|
|
|
|
Rectangle2D transRect = transShape.getBounds2D();
|
|
|
|
mDrawingArea.add((float) transRect.getMinY(),
|
|
(float) transRect.getMaxY());
|
|
|
|
|
|
}
|
|
|
|
/**
|
|
* Add the stroked shape to the area representing
|
|
* the part of the page which is drawn into.
|
|
*/
|
|
private void addStrokeShape(Shape s) {
|
|
Shape transShape = getStroke().createStrokedShape(s);
|
|
addDrawingRect(transShape.getBounds2D());
|
|
}
|
|
|
|
/* Image Observer */
|
|
|
|
/**
|
|
* Notify this object when the height or width become available
|
|
* for an image.
|
|
*/
|
|
public synchronized boolean imageUpdate(Image img, int infoFlags,
|
|
int x, int y,
|
|
int width, int height) {
|
|
|
|
boolean gotInfo = false;
|
|
|
|
if((infoFlags & (WIDTH | HEIGHT)) != 0) {
|
|
gotInfo = true;
|
|
notify();
|
|
}
|
|
|
|
return gotInfo;
|
|
}
|
|
|
|
private synchronized int getImageWidth(Image img) {
|
|
|
|
/* Wait for the width the image to
|
|
* become available.
|
|
*/
|
|
while (img.getWidth(this) == -1) {
|
|
try {
|
|
wait();
|
|
} catch (InterruptedException e) {
|
|
}
|
|
}
|
|
|
|
|
|
return img.getWidth(this);
|
|
}
|
|
|
|
private synchronized int getImageHeight(Image img) {
|
|
|
|
/* Wait for the height the image to
|
|
* become available.
|
|
*/
|
|
while (img.getHeight(this) == -1) {
|
|
try {
|
|
wait();
|
|
} catch (InterruptedException e) {
|
|
}
|
|
}
|
|
|
|
|
|
return img.getHeight(this);
|
|
}
|
|
|
|
/**
|
|
* This private class does not return from its constructor
|
|
* until 'img's width and height are available.
|
|
*/
|
|
protected class ImageWaiter implements ImageObserver {
|
|
|
|
private int mWidth;
|
|
private int mHeight;
|
|
private boolean badImage = false;
|
|
|
|
ImageWaiter(Image img) {
|
|
waitForDimensions(img);
|
|
}
|
|
|
|
public int getWidth() {
|
|
return mWidth;
|
|
}
|
|
|
|
public int getHeight() {
|
|
return mHeight;
|
|
}
|
|
|
|
private synchronized void waitForDimensions(Image img) {
|
|
mHeight = img.getHeight(this);
|
|
mWidth = img.getWidth(this);
|
|
while (!badImage && (mWidth < 0 || mHeight < 0)) {
|
|
try {
|
|
Thread.sleep(50);
|
|
} catch(InterruptedException e) {
|
|
// do nothing.
|
|
}
|
|
mHeight = img.getHeight(this);
|
|
mWidth = img.getWidth(this);
|
|
}
|
|
if (badImage) {
|
|
mHeight = 0;
|
|
mWidth = 0;
|
|
}
|
|
}
|
|
|
|
public synchronized boolean imageUpdate(Image image, int flags,
|
|
int x, int y, int w, int h) {
|
|
|
|
boolean dontCallMeAgain = (flags & (HEIGHT | ABORT | ERROR)) != 0;
|
|
badImage = (flags & (ABORT | ERROR)) != 0;
|
|
|
|
return dontCallMeAgain;
|
|
}
|
|
|
|
}
|
|
}
|