/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.awt.util;
import java.awt.Rectangle;
import java.awt.Transparency;
import java.awt.geom.AffineTransform;
import java.awt.image.DataBuffer;
import java.awt.image.DataBufferByte;
import java.awt.image.DataBufferInt;
import java.awt.image.DataBufferShort;
import java.awt.image.DataBufferUShort;
import java.awt.image.Raster;
import javax.naming.NamingException;
import org.jnode.naming.InitialNaming;
import org.jnode.system.resource.MemoryResource;
import org.jnode.system.resource.ResourceManager;
/**
* @author Ewout Prangsma (epr@users.sourceforge.net)
* @author Levente S\u00e1ntha
*/
public abstract class BitmapGraphics {
public abstract int getWidth();
public abstract int getHeight();
/**
* @see org.jnode.driver.video.Surface#copyArea(int, int, int, int, int,
* int)
*/
public abstract void copyArea(int srcX, int srcY, int w,
int h, int dstX, int dstY);
/**
* Return the pixel value at the specified location.
*
* @param x x coordinate
* @param y y coordinate
* @return the pixel value
*/
public abstract int doGetPixel(int x, int y);
/**
* Return the pixels value from the specified region.
*
* @param r a rectangular region
* @return the pixel values
*/
public abstract int[] doGetPixels(Rectangle r);
/**
* Draw an image to this surface
*
* @param src
* @param srcX The upper left x coordinate of the source
* @param srcY The upper left y coordinate of the source
* @param dstX The upper left x coordinate of the destination
* @param dstY The upper left y coordinate of the destination
* @param w
* @param h
*/
public abstract void drawImage(Raster src, int srcX, int srcY,
int dstX, int dstY, int w, int h);
/**
* Draw an image to this surface
*
* @param src
* @param srcX The upper left x coordinate of the source
* @param srcY The upper left y coordinate of the source
* @param dstX The upper left x coordinate of the destination
* @param dstY The upper left y coordinate of the destination
* @param w
* @param h
* @param bgColor The color to use for transparent pixels
*/
public abstract void drawImage(Raster src, int srcX, int srcY,
int dstX, int dstY, int w, int h, int bgColor);
/**
* Draw an raster of alpha values using a given color onto to this surface.
* The given raster is a 1 band gray type raster.
*
* @param raster
* @param srcX The upper left x coordinate within the raster
* @param srcY The upper left y coordinate within the raster
* @param dstX The upper left destination x coordinate
* @param dstY The upper left destination y coordinate
* @param w
* @param h
* @param color The color to use.
*/
public abstract void drawAlphaRaster(Raster raster, AffineTransform tx, int srcX,
int srcY, int dstX, int dstY, int w, int h,
int color);
/**
* Draw a line at location x,y that is w long using the given color.
*
* @param x
* @param y
* @param w
* @param color
* @param mode
* @see org.jnode.driver.video.Surface#PAINT_MODE
* @see org.jnode.driver.video.Surface#XOR_MODE
*/
public abstract void drawLine(int x, int y, int w,
int color, int mode);
/**
* Draw a pixel at location x,y using the given color.
*
* @param x
* @param y
* @param color
* @param mode
* @see org.jnode.driver.video.Surface#PAINT_MODE
* @see org.jnode.driver.video.Surface#XOR_MODE
*/
public abstract void drawPixels(int x, int y, int count, int color, int mode);
//todo investigate it
//though a potential performance improvement, this method is not used because it makes JNode unstable
public void fillRect(int x, int y, int width, int height, int color, int mode) {
for (int i = 0; i < height; i++)
drawPixels(x, y + i, width, color, mode);
}
/**
* Create a new instance for 16 bits/pixel layout
*
* @param mem
* @param width
* @param height
* @param bytesPerLine
* @param offset
* @return The created instance
*/
public static BitmapGraphics create16bppInstance(MemoryResource mem,
int width, int height, int bytesPerLine, int offset) {
return new BitmapGraphics16bpp(mem, width, height, offset, bytesPerLine);
}
/**
* Create a new instance for 24 bits/pixel layout
*
* @param mem
* @param width
* @param height
* @param bytesPerLine
* @param offset
* @return The created instance
*/
public static BitmapGraphics create24bppInstance(MemoryResource mem,
int width, int height, int bytesPerLine, int offset) {
return new BitmapGraphics24bpp(mem, width, height, offset, bytesPerLine);
}
/**
* Create a new instance for 32 bits/pixel layout
*
* @param mem
* @param width
* @param height
* @param bytesPerLine
* @param offset
* @return The created instance
*/
public static BitmapGraphics create32bppInstance(MemoryResource mem,
int width, int height, int bytesPerLine, int offset) {
return new BitmapGraphics32bpp(mem, width, height, offset, bytesPerLine, Transparency.OPAQUE);
}
/**
* Create a new instance for 32 bits/pixel layout
*
* @param mem
* @param width
* @param height
* @param bytesPerLine
* @param offset
* @return The created instance
*/
public static BitmapGraphics create32bppInstance(MemoryResource mem,
int width, int height, int bytesPerLine, int offset,
int transparency) {
return new BitmapGraphics32bpp(mem, width, height, offset, bytesPerLine, transparency);
}
/**
* Create a new instance for 8 bits/pixel layout
*
* @param mem
* @param width
* @param height
* @param bytesPerLine
* @param offset
* @return The created instance
*/
public static BitmapGraphics create8bppInstance(MemoryResource mem,
int width, int height, int bytesPerLine, int offset) {
return new BitmapGraphics8bpp(mem, width, height, offset, bytesPerLine);
}
/**
* Create a new instance for a given DataBuffer
*
* @param dataBuffer
* @param width
* @param height
* @param bytesPerLine
* @return The created instance
*/
public static BitmapGraphics createInstance(DataBuffer dataBuffer,
int width, int height, int bytesPerLine, int transparency) {
final ResourceManager rm;
try {
rm = InitialNaming.lookup(ResourceManager.NAME);
} catch (NamingException ex) {
throw new RuntimeException("Cannot find ResourceManager", ex);
}
final int dbOffset = dataBuffer.getOffset();
switch (dataBuffer.getDataType()) {
case DataBuffer.TYPE_BYTE: {
final byte[] data = ((DataBufferByte) dataBuffer).getData();
return new BitmapGraphics8bpp(rm.asMemoryResource(data), width,
height, dbOffset, bytesPerLine);
}
case DataBuffer.TYPE_SHORT: {
final short[] data = ((DataBufferShort) dataBuffer).getData();
return new BitmapGraphics16bpp(rm.asMemoryResource(data), width,
height, dbOffset * 2, bytesPerLine);
}
case DataBuffer.TYPE_USHORT: {
final short[] data = ((DataBufferUShort) dataBuffer).getData();
return new BitmapGraphics16bpp(rm.asMemoryResource(data), width,
height, dbOffset * 2, bytesPerLine);
}
case DataBuffer.TYPE_INT: {
final int[] data = ((DataBufferInt) dataBuffer).getData();
return new BitmapGraphics32bpp(rm.asMemoryResource(data), width,
height, dbOffset * 4, bytesPerLine, transparency);
}
default: {
throw new RuntimeException("Unimplemented databuffer type " + dataBuffer.getDataType());
}
}
}
}