/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
/**
* An ImageFilter class for scaling images using the simplest algorithm.
* This class extends the basic ImageFilter Class to scale an existing
* image and provide a source for a new image containing the resampled
* image. The pixels in the source image are sampled to produce pixels
* for an image of the specified size by replicating rows and columns of
* pixels to scale up or omitting rows and columns of pixels to scale
* down.
* <p>It is meant to be used in conjunction with a FilteredImageSource
* object to produce scaled versions of existing images. Due to
* implementation dependencies, there may be differences in pixel values
* of an image filtered on different platforms.
*
* @see FilteredImageSource
* @see ImageFilter
*
* @author Jim Graham
*/
/**
* The width of the source image.
*/
protected int srcWidth;
/**
* The height of the source image.
*/
protected int srcHeight;
/**
* The target width to scale the image.
*/
protected int destWidth;
/**
* The target height to scale the image.
*/
protected int destHeight;
/**
* An <code>int</code> array containing information about a
* row of pixels.
*/
protected int srcrows[];
/**
* An <code>int</code> array containing information about a
* column of pixels.
*/
protected int srccols[];
/**
* A <code>byte</code> array initialized with a size of
* {@link #destWidth} and used to deliver a row of pixel
* data to the {@link ImageConsumer}.
*/
/**
* Constructs a ReplicateScaleFilter that scales the pixels from
* its source Image as specified by the width and height parameters.
* @param width the target width to scale the image
* @param height the target height to scale the image
* @throws IllegalArgumentException if <code>width</code> equals
* zero or <code>height</code> equals zero
*/
") and height ("+height+
") must be non-zero");
}
destHeight = height;
}
/**
* Passes along the properties from the source object after adding a
* property indicating the scale applied.
* This method invokes <code>super.setProperties</code>,
* which might result in additional properties being added.
* <p>
* Note: This method is intended to be called by the
* <code>ImageProducer</code> of the <code>Image</code> whose pixels
* are being filtered. Developers using
* this class to filter pixels from an image should avoid calling
* this method directly since that operation could interfere
* with the filtering operation.
*/
}
super.setProperties(p);
}
/**
* Override the dimensions of the source image and pass the dimensions
* of the new scaled size to the ImageConsumer.
* <p>
* Note: This method is intended to be called by the
* <code>ImageProducer</code> of the <code>Image</code> whose pixels
* are being filtered. Developers using
* this class to filter pixels from an image should avoid calling
* this method directly since that operation could interfere
* with the filtering operation.
* @see ImageConsumer
*/
public void setDimensions(int w, int h) {
srcWidth = w;
srcHeight = h;
if (destWidth < 0) {
if (destHeight < 0) {
} else {
}
} else if (destHeight < 0) {
}
}
private void calculateMaps() {
for (int y = 0; y <= destHeight; y++) {
}
for (int x = 0; x <= destWidth; x++) {
}
}
/**
* Choose which rows and columns of the delivered byte pixels are
* needed for the destination scaled image and pass through just
* those rows and columns that are needed, replicated as necessary.
* <p>
* Note: This method is intended to be called by the
* <code>ImageProducer</code> of the <code>Image</code> whose pixels
* are being filtered. Developers using
* this class to filter pixels from an image should avoid calling
* this method directly since that operation could interfere
* with the filtering operation.
*/
public void setPixels(int x, int y, int w, int h,
int scansize) {
}
byte outpix[];
} else {
}
int dx;
}
}
}
}
/**
* Choose which rows and columns of the delivered int pixels are
* needed for the destination scaled image and pass through just
* those rows and columns that are needed, replicated as necessary.
* <p>
* Note: This method is intended to be called by the
* <code>ImageProducer</code> of the <code>Image</code> whose pixels
* are being filtered. Developers using
* this class to filter pixels from an image should avoid calling
* this method directly since that operation could interfere
* with the filtering operation.
*/
public void setPixels(int x, int y, int w, int h,
int scansize) {
}
int outpix[];
} else {
}
int dx;
}
}
}
}
}