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- /*
- * Copyright 1999-2004 The Apache Software Foundation.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /* $Id$ */
-
- package org.apache.fop.image;
-
- // Java
- import java.awt.color.ColorSpace;
- import java.awt.color.ICC_Profile;
- import java.io.InputStream;
- import java.awt.Color;
-
- // FOP
- import org.apache.avalon.framework.logger.Logger;
-
- /**
- * Base class to implement the FopImage interface.
- * @author Eric SCHAEFFER
- * @author Modified by Eric Dalquist - 9/14/2001 - ebdalqui@mtu.edu
- * @see FopImage
- */
- public abstract class AbstractFopImage implements FopImage {
- /**
- * Keeps track of what has been loaded.
- */
- protected int loaded = 0;
-
- /**
- * Image width (in pixel).
- */
- protected int width = 0;
-
- /**
- * Image height (in pixel).
- */
- protected int height = 0;
-
- /**
- * Image input stream.
- */
- protected InputStream inputStream = null;
-
- /**
- * ImageReader object (to obtain image header informations).
- */
- protected FopImage.ImageInfo imageInfo = null;
-
- /**
- * Image color space (java.awt.color.ColorSpace).
- */
- protected ColorSpace colorSpace = null;
-
- /**
- * Bits per pixel.
- */
- protected int bitsPerPixel = 0;
-
- /**
- * Image data (uncompressed).
- */
- protected byte[] bitmaps = null;
-
- /**
- * Image data size.
- */
- protected int bitmapsSize = 0;
-
- /**
- * Image transparency.
- */
- protected boolean isTransparent = false;
-
- /**
- * Transparent color (java.awt.Color).
- */
- protected Color transparentColor = null;
-
- /**
- * Constructor.
- * Construct a new FopImage object and initialize its default properties:
- * <UL>
- * <LI>image width
- * <LI>image height
- * </UL>
- * The image data isn't kept in memory.
- * @param info image information
- */
- public AbstractFopImage(FopImage.ImageInfo info) {
- this.inputStream = info.inputStream;
- this.imageInfo = info;
- if (this.imageInfo.width != -1) {
- width = imageInfo.width;
- height = imageInfo.height;
- loaded = loaded | DIMENSIONS;
- }
- }
-
- /**
- * Get the mime type for this image.
- *
- * @return the mime type for the image
- */
- public String getMimeType() {
- return imageInfo.mimeType;
- }
-
- /**
- * Load image data and initialize its properties.
- *
- * @param type the type of loading to do
- * @param ua the user agent for handling logging etc.
- * @return true if the loading was successful
- */
- public synchronized boolean load(int type, Logger logger) {
- if ((loaded & type) != 0) {
- return true;
- }
- boolean success = true;
- if (((type & DIMENSIONS) != 0) && ((loaded & DIMENSIONS) == 0)) {
- success = success && loadDimensions(logger);
-
- if (!success) {
- return false;
- }
- loaded = loaded | DIMENSIONS;
- }
- if (((type & BITMAP) != 0) && ((loaded & BITMAP) == 0)) {
- success = success && loadBitmap(logger);
- if (success) {
- loaded = loaded | BITMAP;
- }
- }
- if (((type & ORIGINAL_DATA) != 0) && ((loaded & ORIGINAL_DATA) == 0)) {
- success = success && loadOriginalData(logger);
- if (success) {
- loaded = loaded | ORIGINAL_DATA;
- }
- }
- return success;
- }
-
- /**
- * Load the dimensions of the image.
- * All implementations should override this to get and
- * return the dimensions.
- *
- * @param ua the user agent
- * @return true if the loading was successful
- */
- protected boolean loadDimensions(Logger logger) {
- return false;
- }
-
- /**
- * Load a bitmap array of the image.
- * If the renderer requires a bitmap image then the
- * implementations should override this to load the bitmap.
- *
- * @param ua the user agent
- * @return true if the loading was successful
- */
- protected boolean loadBitmap(Logger logger) {
- return false;
- }
-
- /**
- * Load the original image data.
- * In some cases the original data can be used by the renderer.
- * This should load the data and any other associated information.
- *
- * @param ua the user agent
- * @return true if the loading was successful
- */
- protected boolean loadOriginalData(Logger logger) {
- return false;
- }
-
- /**
- * Return the image width.
- * @return the image width
- */
- public int getWidth() {
- return this.width;
- }
-
- /**
- * Return the image height.
- * @return the image height
- */
- public int getHeight() {
- return this.height;
- }
-
- /**
- * Return the image color space.
- * @return the image color space (java.awt.color.ColorSpace)
- */
- public ColorSpace getColorSpace() {
- return this.colorSpace;
- }
-
- /**
- * Get ICC profile for this image.
- * @return the icc profile or null if not applicable
- */
- public ICC_Profile getICCProfile() {
- return null;
- }
-
- /**
- * Return the number of bits per pixel.
- * @return number of bits per pixel
- */
- public int getBitsPerPixel() {
- return this.bitsPerPixel;
- }
-
- /**
- * Return the image transparency.
- * @return true if the image is transparent
- */
- public boolean isTransparent() {
- return this.isTransparent;
- }
-
- /**
- * Check if this image has a soft mask.
- *
- * @return true if the image also has a soft transparency mask
- */
- public boolean hasSoftMask() {
- return false;
- }
-
- /**
- * Get the soft mask.
- * The soft mask should have the same bitdepth as the image data.
- *
- * @return the data array of soft mask values
- */
- public byte[] getSoftMask() {
- return null;
- }
-
- /**
- * Return the transparent color.
- * @return the transparent color (java.awt.Color)
- */
- public Color getTransparentColor() {
- return this.transparentColor;
- }
-
- /**
- * Return the image data (uncompressed).
- * @return the image data
- */
- public byte[] getBitmaps() {
- return this.bitmaps;
- }
-
- /**
- * Return the image data size (uncompressed).
- * @return the image data size
- */
- public int getBitmapsSize() {
- return this.bitmapsSize;
- }
-
- /**
- * Return the original image data (compressed).
- * @return the original image data
- */
- public byte[] getRessourceBytes() {
- return null;
- }
-
- /**
- * Return the original image data size (compressed).
- * @return the original image data size
- */
- public int getRessourceBytesSize() {
- return 0;
- }
-
- }
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