diff options
Diffstat (limited to 'src/org/apache/fop/image/AbstractFopImage.java')
| -rw-r--r-- | src/org/apache/fop/image/AbstractFopImage.java | 144 |
1 files changed, 48 insertions, 96 deletions
diff --git a/src/org/apache/fop/image/AbstractFopImage.java b/src/org/apache/fop/image/AbstractFopImage.java index 4669758c7..f55d4f01c 100644 --- a/src/org/apache/fop/image/AbstractFopImage.java +++ b/src/org/apache/fop/image/AbstractFopImage.java @@ -8,7 +8,6 @@ package org.apache.fop.image; // Java -import java.util.Hashtable; import java.net.URL; // FOP @@ -17,6 +16,7 @@ import org.apache.fop.pdf.PDFColor; import org.apache.fop.pdf.PDFFilter; import org.apache.fop.image.analyser.ImageReaderFactory; import org.apache.fop.image.analyser.ImageReader; +import org.apache.fop.fo.FOUserAgent; /** * Base class to implement the FopImage interface. @@ -25,6 +25,7 @@ import org.apache.fop.image.analyser.ImageReader; * @see FopImage */ public abstract class AbstractFopImage implements FopImage { + protected int loaded = 0; /** * Image width (in pixel). @@ -91,49 +92,53 @@ public abstract class AbstractFopImage implements FopImage { * </UL> * The image data isn't kept in memory. * @param href image URL - * @return a new FopImage object - * @exception FopImageException an error occured during initialization - */ - public AbstractFopImage(URL href) throws FopImageException { - this.m_href = href; - try { - this.m_imageReader = - ImageReaderFactory.Make(this.m_href.toExternalForm(), - this.m_href.openStream()); - } catch (Exception e) { - throw new FopImageException(e.getMessage()); - } - this.m_width = this.m_imageReader.getWidth(); - this.m_height = this.m_imageReader.getHeight(); - } - - /** - * 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 href image URL * imgReader ImageReader object * @return a new FopImage object - * @exception FopImageException an error occured during initialization */ - public AbstractFopImage(URL href, - ImageReader imgReader) throws FopImageException { + public AbstractFopImage(URL href, ImageReader imgReader) { this.m_href = href; this.m_imageReader = imgReader; this.m_width = this.m_imageReader.getWidth(); this.m_height = this.m_imageReader.getHeight(); + loaded = loaded & DIMENSIONS; + } + + public String getMimeType() { + return m_imageReader.getMimeType(); } /** * Load image data and initialize its properties. - * Subclasses need to implement this method. - * @exception FopImageException an error occured during loading */ - abstract protected void loadImage() throws FopImageException; + public synchronized boolean load(int type, FOUserAgent ua) { + if((loaded & type) != 0) { + return true; + } + boolean success = true; + if(((type & DIMENSIONS) != 0) && ((loaded & DIMENSIONS) == 0)) { + success = success && loadDimensions(ua); + + if(!success) { + return false; + } + loaded = loaded & DIMENSIONS; + } + if(((type & BITMAP) != 0) && ((loaded & BITMAP) == 0)) { + success = success && loadBitmap(ua); + if(success) { + loaded = loaded & BITMAP; + } + } + return success; + } + + protected boolean loadDimensions(FOUserAgent ua) { + return false; + } + + protected boolean loadBitmap(FOUserAgent ua) { + return false; + } /** * Return the image URL. @@ -146,149 +151,96 @@ public abstract class AbstractFopImage implements FopImage { /** * Return the image width. * @return the image width - * @exception FopImageException an error occured during property retriaval */ - public int getWidth() throws FopImageException { - if (this.m_width == 0) - this.loadImage(); - + public int getWidth() { return this.m_width; } /** * Return the image height. * @return the image height - * @exception FopImageException an error occured during property retriaval */ - public int getHeight() throws FopImageException { - if (this.m_height == 0) - this.loadImage(); - + public int getHeight() { return this.m_height; } /** * Return the image color space. * @return the image color space (org.apache.fop.datatypes.ColorSpace) - * @exception FopImageException an error occured during property retriaval */ - public ColorSpace getColorSpace() throws FopImageException { - if (this.m_colorSpace == null) - this.loadImage(); - + public ColorSpace getColorSpace() { return this.m_colorSpace; } /** * Return the number of bits per pixel. * @return number of bits per pixel - * @exception FopImageException an error occured during property retriaval */ - public int getBitsPerPixel() throws FopImageException { - if (this.m_bitsPerPixel == 0) - this.loadImage(); - + public int getBitsPerPixel() { return this.m_bitsPerPixel; } /** * Return the image transparency. * @return true if the image is transparent - * @exception FopImageException an error occured during property retriaval */ - public boolean isTransparent() throws FopImageException { + public boolean isTransparent() { return this.m_isTransparent; } /** * Return the transparent color. * @return the transparent color (org.apache.fop.pdf.PDFColor) - * @exception FopImageException an error occured during property retriaval */ - public PDFColor getTransparentColor() throws FopImageException { + public PDFColor getTransparentColor() { return this.m_transparentColor; } /** * Return the image data (uncompressed). * @return the image data - * @exception FopImageException an error occured during loading */ - public byte[] getBitmaps() throws FopImageException { - if (this.m_bitmaps == null) - this.loadImage(); - + public byte[] getBitmaps() { return this.m_bitmaps; } /** * Return the image data size (uncompressed). * @return the image data size - * @exception FopImageException an error occured during loading */ - public int getBitmapsSize() throws FopImageException { - if (this.m_bitmapsSize == 0) - this.loadImage(); - + public int getBitmapsSize() { return this.m_bitmapsSize; } /** * Return the original image data (compressed). * @return the original image data - * @exception FopImageException an error occured during loading */ - public byte[] getRessourceBytes() throws FopImageException { + public byte[] getRessourceBytes() { return null; } /** * Return the original image data size (compressed). * @return the original image data size - * @exception FopImageException an error occured during loading */ - public int getRessourceBytesSize() throws FopImageException { + public int getRessourceBytesSize() { return 0; } /** * Return the original image compression type. * @return the original image compression type (org.apache.fop.pdf.PDFFilter) - * @exception FopImageException an error occured during loading */ - public PDFFilter getPDFFilter() throws FopImageException { + public PDFFilter getPDFFilter() { /* * Added by Eric Dalquist * Using the bitsPerPixel var as our flag since many imges will * have a null m_compressionType even after being loaded */ - if (this.m_bitsPerPixel == 0) - this.loadImage(); - return m_compressionType; } - /** - * Free all ressource. - */ - public void close() { - /* - * For the moment, only release the bitmaps (image areas - * can share the same FopImage object) - * Thus, even if it had been called, other properties - * are still available. - */ - // this.m_width = 0; - // this.m_height = 0; - // this.m_href = null; - // this.m_colorSpace = null; - // this.m_bitsPerPixel = 0; - this.m_bitmaps = null; - this.m_bitmapsSize = 0; - // this.m_isTransparent = false; - // this.m_transparentColor = null; - } - } |