diff options
Diffstat (limited to 'libjava/gnu/java')
| -rw-r--r-- | libjava/gnu/java/awt/BitMaskExtent.java | 68 | ||||
| -rw-r--r-- | libjava/gnu/java/awt/Buffers.java | 185 | ||||
| -rw-r--r-- | libjava/gnu/java/awt/ComponentDataBlitOp.java | 140 | ||||
| -rw-r--r-- | libjava/gnu/java/awt/GLightweightPeer.java | 156 |
4 files changed, 549 insertions, 0 deletions
diff --git a/libjava/gnu/java/awt/BitMaskExtent.java b/libjava/gnu/java/awt/BitMaskExtent.java new file mode 100644 index 00000000000..4f9cb7cd2aa --- /dev/null +++ b/libjava/gnu/java/awt/BitMaskExtent.java @@ -0,0 +1,68 @@ +/* Copyright (C) 2000, 2002 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ + +package gnu.java.awt; + +/** + * Simple transparent utility class that can be used to perform bit + * mask extent calculations. + */ +public final class BitMaskExtent +{ + /** The number of the least significant bit of the bit mask extent. */ + public byte leastSignificantBit; + + /** The number of bits in the bit mask extent. */ + public byte bitWidth; + + /** + * Set the bit mask. This will calculate and set the leastSignificantBit + * and bitWidth fields. + * + * @see #leastSignificantBit + * @see #bitWidth + */ + public void setMask(long mask) + { + leastSignificantBit = 0; + bitWidth = 0; + if (mask == 0) return; + long shiftMask = mask; + for (; (shiftMask&1) == 0; shiftMask >>>=1) leastSignificantBit++; + for (; (shiftMask&1) != 0; shiftMask >>>=1) bitWidth++; + + if (shiftMask != 0) + throw new IllegalArgumentException("mask must be continuous"); + } + + /** + * Calculate the bit mask based on the values of the + * leastSignificantBit and bitWidth fields. + */ + public long toMask() + { + return ((1<<bitWidth)-1) << leastSignificantBit; + } +} diff --git a/libjava/gnu/java/awt/Buffers.java b/libjava/gnu/java/awt/Buffers.java new file mode 100644 index 00000000000..8deccdbc0c0 --- /dev/null +++ b/libjava/gnu/java/awt/Buffers.java @@ -0,0 +1,185 @@ +/* Copyright (C) 2000, 2002 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ + +package gnu.java.awt; + +import java.awt.image.*; + +/** + * Utility class for creating and accessing data buffers of arbitrary + * data types. + */ +public final class Buffers +{ + /** + * Create a data buffer of a particular type. + * + * @param dataType the desired data type of the buffer. + * @param data an array containing data, or null + * @param size the size of the data buffer bank + */ + public static DataBuffer createBuffer(int dataType, Object data, + int size) + { + if (data == null) return createBuffer(dataType, size, 1); + + return createBufferFromData(dataType, data, size); + } + + + /** + * Create a data buffer of a particular type. + * + * @param dataType the desired data type of the buffer. + * @param size the size of the data buffer bank + */ + public static DataBuffer createBuffer(int dataType, int size) { + return createBuffer(dataType, size, 1); + } + + /** + * Create a data buffer of a particular type. + * + * @param dataType the desired data type of the buffer. + * @param size the size of the data buffer bank + * @param numBanks the number of banks the buffer should have + */ + public static DataBuffer createBuffer(int dataType, int size, int numBanks) + { + switch (dataType) + { + case DataBuffer.TYPE_BYTE: + return new DataBufferByte(size, numBanks); + case DataBuffer.TYPE_USHORT: + return new DataBufferUShort(size, numBanks); + case DataBuffer.TYPE_INT: + return new DataBufferInt(size, numBanks); + default: + throw new UnsupportedOperationException(); + } + } + + /** + * Create a data buffer of a particular type. + * + * @param dataType the desired data type of the buffer + * @param data an array containing the data + * @param size the size of the data buffer bank + */ + public static DataBuffer createBufferFromData(int dataType, Object data, + int size) + { + switch (dataType) + { + case DataBuffer.TYPE_BYTE: + return new DataBufferByte((byte[]) data, size); + case DataBuffer.TYPE_USHORT: + return new DataBufferUShort((short[]) data, size); + case DataBuffer.TYPE_INT: + return new DataBufferInt((int[]) data, size); + default: + throw new UnsupportedOperationException(); + } + } + + /** + * Return the data array of a data buffer, regardless of the data + * type. + * + * @return an array of primitive values. The actual array type + * depends on the data type of the buffer. + */ + public static Object getData(DataBuffer buffer) + { + if (buffer instanceof DataBufferByte) + return ((DataBufferByte) buffer).getData(); + if (buffer instanceof DataBufferUShort) + return ((DataBufferUShort) buffer).getData(); + if (buffer instanceof DataBufferInt) + return ((DataBufferInt) buffer).getData(); + throw new ClassCastException("Unknown data buffer type"); + } + + + /** + * Copy data from array contained in data buffer, much like + * System.arraycopy. Create a suitable destination array if the + * given destination array is null. + */ + public static Object getData(DataBuffer src, int srcOffset, + Object dest, int destOffset, + int length) + { + Object from; + if (src instanceof DataBufferByte) + { + from = ((DataBufferByte) src).getData(); + if (dest == null) dest = new byte[length+destOffset]; + } + else if (src instanceof DataBufferUShort) + { + from = ((DataBufferUShort) src).getData(); + if (dest == null) dest = new short[length+destOffset]; + } + else if (src instanceof DataBufferInt) + { + from = ((DataBufferInt) src).getData(); + if (dest == null) dest = new int[length+destOffset]; + } + else + { + throw new ClassCastException("Unknown data buffer type"); + } + + System.arraycopy(from, srcOffset, dest, destOffset, length); + return dest; + } + + /** + * @param bits the width of a data element measured in bits + * + * @return the smallest data type that can store data elements of + * the given number of bits, without any truncation. + */ + public static int smallestAppropriateTransferType(int bits) + { + if (bits <= 8) + { + return DataBuffer.TYPE_BYTE; + } + else if (bits <= 16) + { + return DataBuffer.TYPE_USHORT; + } + else if (bits <= 32) + { + return DataBuffer.TYPE_INT; + } + else + { + return DataBuffer.TYPE_UNDEFINED; + } + } +} diff --git a/libjava/gnu/java/awt/ComponentDataBlitOp.java b/libjava/gnu/java/awt/ComponentDataBlitOp.java new file mode 100644 index 00000000000..ac6eb3ed24e --- /dev/null +++ b/libjava/gnu/java/awt/ComponentDataBlitOp.java @@ -0,0 +1,140 @@ +/* Copyright (C) 2000, 2002 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ + +package gnu.java.awt; + +import java.awt.geom.*; +import java.awt.image.*; +import java.awt.RenderingHints; + +/** + * This raster copy operation assumes that both source and destination + * sample models are tightly pixel packed and contain the same number + * of bands. + * + * @throws java.lang.ClassCastException if the sample models of the + * rasters are not of type ComponentSampleModel. + * + * @author Rolf W. Rasmussen <rolfwr@ii.uib.no> + */ +public class ComponentDataBlitOp implements RasterOp +{ + public static ComponentDataBlitOp INSTANCE = new ComponentDataBlitOp(); + + public WritableRaster filter(Raster src, WritableRaster dest) + { + if (dest == null) + dest = createCompatibleDestRaster(src); + + DataBuffer srcDB = src.getDataBuffer(); + DataBuffer destDB = dest.getDataBuffer(); + + ComponentSampleModel srcSM = (ComponentSampleModel) src.getSampleModel(); + ComponentSampleModel destSM = (ComponentSampleModel) dest.getSampleModel(); + + + // Calculate offset to data in the underlying arrays: + + int srcScanlineStride = srcSM.getScanlineStride(); + int destScanlineStride = destSM.getScanlineStride(); + int srcX = src.getMinX() - src.getSampleModelTranslateX(); + int srcY = src.getMinY() - src.getSampleModelTranslateY(); + int destX = dest.getMinX() - dest.getSampleModelTranslateX(); + int destY = dest.getMinY() - dest.getSampleModelTranslateY(); + + int numBands = srcSM.getNumBands(); + + /* We can't use getOffset(x, y) from the sample model since we + don't want the band offset added in. */ + + int srcOffset = + numBands*srcX + srcScanlineStride*srcY + // from sample model + srcDB.getOffset(); // from data buffer + + int destOffset = + numBands*destX + destScanlineStride*destY + // from sample model + destDB.getOffset(); // from data buffer + + // Determine how much, and how many times to blit. + + int rowSize = src.getWidth()*numBands; + int h = src.getHeight(); + + if ((rowSize == srcScanlineStride) && + (rowSize == destScanlineStride)) + { + // collapse scan line blits to one large blit. + rowSize *= h; + h = 1; + } + + + // Do blitting + + Object srcArray = Buffers.getData(srcDB); + Object destArray = Buffers.getData(destDB); + + for (int yd = 0; yd<h; yd++) + { + System.arraycopy(srcArray, srcOffset, + destArray, destOffset, + rowSize); + srcOffset += srcScanlineStride; + destOffset += destScanlineStride; + } + + + return dest; + } + + public Rectangle2D getBounds2D(Raster src) + { + return src.getBounds(); + } + + public WritableRaster createCompatibleDestRaster(Raster src) { + + /* FIXME: Maybe we should explicitly create a raster with a + tightly pixel packed sample model, rather than assuming + that the createCompatibleWritableRaster() method in Raster + will create one. */ + + return src.createCompatibleWritableRaster(); + } + + public Point2D getPoint2D(Point2D srcPoint, Point2D destPoint) + { + if (destPoint == null) + return (Point2D) srcPoint.clone(); + + destPoint.setLocation(srcPoint); + return destPoint; + } + + public RenderingHints getRenderingHints() + { + throw new UnsupportedOperationException("not implemented"); + } +} diff --git a/libjava/gnu/java/awt/GLightweightPeer.java b/libjava/gnu/java/awt/GLightweightPeer.java new file mode 100644 index 00000000000..79b9d743a69 --- /dev/null +++ b/libjava/gnu/java/awt/GLightweightPeer.java @@ -0,0 +1,156 @@ +/* Copyright (C) 2000, 2002 Free Software Foundation + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath 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 for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ + +package gnu.java.awt; + +import java.awt.*; +import java.awt.peer.*; +import java.awt.image.*; + +/** + * @author Rolf W. Rasmussen <rolfwr@ii.uib.no> + */ +public class GLightweightPeer implements LightweightPeer +{ + public static final GLightweightPeer INSTANCE = new GLightweightPeer(); + + public GLightweightPeer() {} + + // -------- java.awt.peer.ComponentPeer implementation: + + public int checkImage(Image img, int width, int height, ImageObserver o) + { + return 0; + } + + public Image createImage(ImageProducer prod) + { + return null; + } + + public Image createImage(int width, int height) + { + return null; + } + + public void disable() {} + + public void dispose() {} + + public void enable() {} + + public GraphicsConfiguration getGraphicsConfiguration() + { + return null; + } + + public FontMetrics getFontMetrics(Font f) + { + return null; + } + + public Graphics getGraphics() + { + return null; + } + + public Point getLocationOnScreen() + { + return null; + } + + public Dimension getMinimumSize() + { + return null; + } + + public Dimension getPreferredSize() + { + return null; + } + + public Toolkit getToolkit() + { + return null; + } + + public void handleEvent(AWTEvent e) {} + + public void hide() {} + + public boolean isFocusTraversable() + { + return false; + } + + public Dimension minimumSize() + { + return null; + } + + public Dimension preferredSize() + { + return null; + } + + public void paint(Graphics graphics) {} + + public boolean prepareImage(Image img, int width, int height, + ImageObserver o) + { + return false; + } + + public void print(Graphics graphics) {} + + public void repaint(long tm, int x, int y, int width, int height) {} + + public void requestFocus() {} + + public void reshape(int x, int y, int width, int height) {} + + public void setBackground(Color color) {} + + public void setBounds(int x, int y, int width, int height) {} + + public void setCursor(Cursor cursor) {} + + public void setEnabled(boolean enabled) {} + + public void setEventMask(long eventMask) {} + + public void setFont(Font font) {} + + public void setForeground(Color color) {} + + public void setVisible(boolean visible) {} + + public void show() {} + + public ColorModel getColorModel () + { + return null; + } +} |
