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[multiple changes]

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2004-04-20  Ingo Proetel  <proetel@aicas.com>

	* java/awt/FontMetrics.java:
	(charsWidth): fixed accumulation of total_width
	(getWidth): simple default implementation
	* java/awt/Polygon.java (getBoundingBox): Use correct y-coordinate
	in Rectangle constructor.
	* java/awt/image/Raster.java (toString): Added method.
	* java/awt/image/SampleModel.java (<init>): Added error cause
	information to thrown exception.
	* java/awt/image/SinglePixelPackedSampleModel.java (getDataElements):
	New method.
	(setDataElements): New method.
	(setPixels): New method.
	(toString): New method.

2004-04-20  Sascha Brawer  <brawer@dandelis.ch>

	* java/awt/image/ComponentColorModel.java
	(createCompatibleSampleModel): Return PixelInterleavedSampleModel
	for TYPE_BYTE and TYPE_USHORT transferTypes, in order to pass the
	Mauve tests on this method. Improved documentation.

From-SVN: r80894
This commit is contained in:
Michael Koch 2004-04-20 11:13:09 +00:00
parent 2c4d54e6d0
commit 23f0ecff4a
7 changed files with 260 additions and 18 deletions
Download patch file Download diff file Expand all files Collapse all files

158
libjava/java/awt/image/SinglePixelPackedSampleModel.java
View file

@ -1,4 +1,4 @@
/* Copyright (C) 2000, 2002, 2003 Free Software Foundation
/* Copyright (C) 2000, 2002, 2003, 2004 Free Software Foundation
This file is part of GNU Classpath.
@ -162,6 +162,63 @@ public class SinglePixelPackedSampleModel extends SampleModel
1 // length
);
}
/**
* This is a more efficient implementation of the default implementation in the super
* class.
* @param x The x-coordinate of the pixel rectangle to store in <code>obj</code>.
* @param y The y-coordinate of the pixel rectangle to store in <code>obj</code>.
* @param w The width of the pixel rectangle to store in <code>obj</code>.
* @param h The height of the pixel rectangle to store in <code>obj</code>.
* @param obj The primitive array to store the pixels into or null to force creation.
* @param data The DataBuffer that is the source of the pixel data.
* @return The primitive array containing the pixel data.
* @see java.awt.image.SampleModel#getDataElements(int, int, int, int, java.lang.Object, java.awt.image.DataBuffer)
*/
public Object getDataElements(int x, int y, int w, int h, Object obj,
DataBuffer data)
{
int size = w*h;
int dataSize = size;
Object pixelData = null;
switch (getTransferType())
{
case DataBuffer.TYPE_BYTE:
pixelData = ((DataBufferByte) data).getData();
if (obj == null) obj = new byte[dataSize];
break;
case DataBuffer.TYPE_USHORT:
pixelData = ((DataBufferUShort) data).getData();
if (obj == null) obj = new short[dataSize];
break;
case DataBuffer.TYPE_INT:
pixelData = ((DataBufferInt) data).getData();
if (obj == null) obj = new int[dataSize];
break;
default:
// Seems like the only sensible thing to do.
throw new ClassCastException();
}
if(x==0 && scanlineStride == w)
{
// The full width need to be copied therefore we can copy in one shot.
System.arraycopy(pixelData, scanlineStride*y + data.getOffset(), obj, 0, size);
}
else
{
// Since we do not need the full width we need to copy line by line.
int outOffset = 0;
int dataOffset = scanlineStride*y + x + data.getOffset();
for (int yy = y; yy<(y+h); yy++)
{
System.arraycopy(pixelData, dataOffset, obj, outOffset, w);
dataOffset += scanlineStride;
outOffset += w;
}
}
return obj;
}
public int[] getPixel(int x, int y, int[] iArray, DataBuffer data)
{
@ -201,7 +258,51 @@ public class SinglePixelPackedSampleModel extends SampleModel
int samples = data.getElem(offset);
return (samples & bitMasks[b]) >>> bitOffsets[b];
}
/**
* This method implements a more efficient way to set data elements than the default
* implementation of the super class. It sets the data elements line by line instead
* of pixel by pixel.
* @param x The x-coordinate of the data elements in <code>obj</code>.
* @param y The y-coordinate of the data elements in <code>obj</code>.
* @param w The width of the data elements in <code>obj</code>.
* @param h The height of the data elements in <code>obj</code>.
* @param obj The primitive array containing the data elements to set.
* @param data The DataBuffer to store the data elements into.
* @see java.awt.image.SampleModel#setDataElements(int, int, int, int, java.lang.Object, java.awt.image.DataBuffer)
*/
public void setDataElements(int x, int y, int w, int h,
Object obj, DataBuffer data)
{
Object pixelData;
switch (getTransferType())
{
case DataBuffer.TYPE_BYTE:
pixelData = ((DataBufferByte) data).getData();
break;
case DataBuffer.TYPE_USHORT:
pixelData = ((DataBufferUShort) data).getData();
break;
case DataBuffer.TYPE_INT:
pixelData = ((DataBufferInt) data).getData();
break;
default:
// Seems like the only sensible thing to do.
throw new ClassCastException();
}
int inOffset = 0;
int dataOffset = scanlineStride*y + x + data.getOffset();
for (int yy=y; yy<(y+h); yy++)
{
System.arraycopy(obj,inOffset,pixelData,dataOffset,w);
dataOffset += scanlineStride;
inOffset += w;
}
}
public void setDataElements(int x, int y, Object obj, DataBuffer data)
{
int offset = scanlineStride*y + x + data.getOffset();
@ -273,6 +374,39 @@ public class SinglePixelPackedSampleModel extends SampleModel
data.setElem(offset, samples);
}
/**
* This method implements a more efficient way to set pixels than the default
* implementation of the super class. It copies the pixel components directly
* from the input array instead of creating a intermediate buffer.
* @param x The x-coordinate of the pixel rectangle in <code>obj</code>.
* @param y The y-coordinate of the pixel rectangle in <code>obj</code>.
* @param w The width of the pixel rectangle in <code>obj</code>.
* @param h The height of the pixel rectangle in <code>obj</code>.
* @param obj The primitive array containing the pixels to set.
* @param data The DataBuffer to store the pixels into.
* @see java.awt.image.SampleModel#setPixels(int, int, int, int, int[], java.awt.image.DataBuffer)
*/
public void setPixels(int x, int y, int w, int h, int[] iArray,
DataBuffer data)
{
int inOffset = 0;
int[] pixel = new int[numBands];
for (int yy=y; yy<(y+h); yy++)
{
int offset = scanlineStride*yy + x;
for (int xx=x; xx<(x+w); xx++)
{
int samples = 0;
for (int b=0; b<numBands; b++)
samples |= (iArray[inOffset+b] << bitOffsets[b]) & bitMasks[b];
data.setElem(0, offset, samples);
inOffset += numBands;
offset += 1;
}
}
}
public void setSample(int x, int y, int b, int s, DataBuffer data)
{
int offset = scanlineStride*y + x;
@ -282,4 +416,24 @@ public class SinglePixelPackedSampleModel extends SampleModel
samples |= (s << bitOffsets[b]) & bitMask;
data.setElem(offset, samples);
}
/**
* Creates a String with some information about this SampleModel.
* @return A String describing this SampleModel.
* @see java.lang.Object#toString()
*/
public String toString()
{
StringBuffer result = new StringBuffer();
result.append(getClass().getName());
result.append("[");
result.append("scanlineStride=").append(scanlineStride);
for(int i=0; i < bitMasks.length; i+=1)
{
result.append(", mask[").append(i).append("]=0x").append(Integer.toHexString(bitMasks[i]));
}
result.append("]");
return result.toString();
}
}