132 lines
4.1 KiB
Java
132 lines
4.1 KiB
Java
/*
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* AppleCommander - An Apple ][ image utility.
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* Copyright (C) 2002-2022 by Robert Greene
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* robgreene at users.sourceforge.net
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package com.webcodepro.applecommander.storage.filters.imagehandlers;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.lang.reflect.Constructor;
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/**
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* AppleImage is an abstract class that represents a generic interface
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* for handing graphic images. This abstraction is needed because not
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* all graphic routines use BufferedImage. AppleImage itself acts as
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* a factory for creating "the best" AppleImage subclass.
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* <p>
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* Date Created: Mar 25, 2003
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* @author Rob Greene
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*/
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public abstract class AppleImage {
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/**
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* The specific file extension to use.
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*/
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private String fileExtension;
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/**
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* All available image formats. This is instance specific since
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* (in theory) there could be different AppleImages being used.
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*/
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private String[] availableExtensions;
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/**
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* Create a specific instance of AppleImage. This has been coded
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* using Reflection to ease native compilation for the most part.
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*/
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public static AppleImage create(int width, int height) {
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String[] classNames = {
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"ImageIoImage", "SunJpegImage", "SwtImage" }; //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
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Class<?>[] constructorArgClasses = new Class<?>[] { int.class, int.class };
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Object[] constructorArgs = { Integer.valueOf(width), Integer.valueOf(height) };
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for (String className : classNames) {
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try {
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Class<?> appleImageClass = Class.forName(
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"com.webcodepro.applecommander.storage.filters.imagehandlers." //$NON-NLS-1$
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+ className);
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Constructor<?> constructor =
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appleImageClass.getConstructor(constructorArgClasses);
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Object instance =
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constructor.newInstance(constructorArgs);
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return AppleImage.class.cast(instance);
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} catch (Exception ignored) {
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// There are multiple exceptions that can be thrown here.
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// For the most part, this is expected and simply means that
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// the image handler is not available on the platform.
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}
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}
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return null;
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}
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/**
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* Construct AppleImage.
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*/
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public AppleImage(String[] availableExtensions) {
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setAvailableExtensions(availableExtensions);
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setFileExtension(getDefaultExtension());
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}
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/**
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* Get the default file extension. Used to "prime" the graphics
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* FileFilter.
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*/
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public String getDefaultExtension() {
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return getAvailableExtensions()[0];
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}
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/**
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* Return a list of file extensions that this specific implementation
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* can handle.
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*/
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public String[] getAvailableExtensions() {
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return this.availableExtensions;
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}
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/**
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* Set the list of file extensions that can be handled.
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*/
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protected void setAvailableExtensions(String[] availableExtensions) {
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this.availableExtensions = availableExtensions;
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}
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/**
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* Returns the file extension.
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*/
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public String getFileExtension() {
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return fileExtension;
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}
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/**
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* Sets the file extension.
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*/
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public void setFileExtension(String fileExtension) {
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this.fileExtension = fileExtension;
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}
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/**
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* Set a color point.
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*/
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public abstract void setPoint(int x, int y, int color);
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/**
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* Get a color point.
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*/
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public abstract int getPoint(int x, int y);
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/**
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* Save the image.
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*/
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public abstract void save(OutputStream outputStream) throws IOException;
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/**
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* Return the width of the image.
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*/
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public abstract int getWidth();
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/**
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* Return the height of the image.
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*/
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public abstract int getHeight();
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}
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