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/*
* Copyright (c) 2012, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* 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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*/
package javafx.scene.image;
import javafx.scene.paint.Color;
import java.nio.Buffer;
import java.nio.ByteBuffer;
import java.nio.IntBuffer;
/**
* This interface defines methods for writing the pixel data of a
* {@link WritableImage} or other surface containing writable pixels.
* @since JavaFX 2.2
*/
public interface PixelWriter {
/**
* This method returns the {@code PixelFormat} in which the surface
* stores its pixels, or a roughly equivalent pixel format from which
* it can easily convert pixels for purposes of writing them.
*
* @return the {@code PixelFormat} that best describes the underlying
* pixels
*/
public PixelFormat getPixelFormat();
/**
* Stores pixel data for a color into the specified coordinates of the
* surface.
* The 32-bit integer {@code argb} parameter should contain the 4 color
* components in separate 8-bit fields in ARGB order from the most
* significant byte to the least significant byte.
*
* @param x the X coordinate of the pixel color to write
* @param y the Y coordinate of the pixel color to write
* @param argb the color information to write, specified in the format
* described by the {@link PixelFormat.Type#INT_ARGB INT_ARGB}
* PixelFormat type.
*/
public void setArgb(int x, int y, int argb);
/**
* Stores pixel data for a {@link Color} into the specified coordinates
* of the surface.
*
* @param x the X coordinate of the pixel color to write
* @param y the Y coordinate of the pixel color to write
* @param c the Color to write or null
*
* @throws java.lang.NullPointerException if {@code color} is {@code null}
*/
public void setColor(int x, int y, Color c);
/**
* Stores pixel data from a buffer into a rectangular region of the
* surface.
* The format of the pixels in the buffer is defined by the
* {@link PixelFormat} object and pixel format conversions will be
* performed as needed to store the data into the surface.
* The buffer is assumed to be positioned to the location where the
* first pixel data to be stored in the surface pixel at location
* {@code (x, y)} is located.
* Pixel data for a row will be read from adjacent locations within
* the buffer packed as tightly as possible for increasing X
* coordinates.
* Pixel data for adjacent rows will be read offset from each other
* by the number of buffer data elements defined by
* {@code scanlineStride}.
*
* @param the type of the buffer
* @param x the X coordinate of the rectangular region to write
* @param y the Y coordinate of the rectangular region to write
* @param w the width of the rectangular region to write
* @param h the height of the rectangular region to write
* @param pixelformat the {@code PixelFormat} object defining the format
* to read the pixels from the buffer
* @param buffer a buffer of a type appropriate for the indicated
* {@code PixelFormat} object
* @param scanlineStride the distance between the pixel data for the
* start of one row of data in the buffer to the start of the
* next row of data.
*
* @throws java.lang.NullPointerException if {@code pixelformat} or {@code buffer} is {@code null}
*/
public
void setPixels(int x, int y, int w, int h,
PixelFormat pixelformat,
T buffer, int scanlineStride);
/**
* Stores pixel data from a byte array into a rectangular region of the
* surface.
* The format of the pixels in the buffer is defined by the
* {@link PixelFormat} object and pixel format conversions will be
* performed as needed to store the data into the surface.
* The {@code pixelformat} must be a compatible
* {@code PixelFormat} type.
* The data for the first pixel at location {@code (x, y)} will be
* read from the array index specified by the {@code offset} parameter.
* Pixel data for a row will be read from adjacent locations within
* the array packed as tightly as possible for increasing X
* coordinates.
* Pixel data for adjacent rows will be read offset from each other
* by the number of byte array elements defined by
* {@code scanlineStride}.
*
* @param x the X coordinate of the rectangular region to write
* @param y the Y coordinate of the rectangular region to write
* @param w the width of the rectangular region to write
* @param h the height of the rectangular region to write
* @param pixelformat the {@code PixelFormat} object
* defining the byte format to read the pixels from buffer
* @param buffer a byte array containing the pixel data to store
* @param offset the offset into {@code buffer} to read the first
* pixel data
* @param scanlineStride the distance between the pixel data for the
* start of one row of data in the buffer to the start of the
* next row of data
*
* @throws java.lang.NullPointerException if {@code pixelformat} or {@code buffer} is {@code null}
*/
public void setPixels(int x, int y, int w, int h,
PixelFormat pixelformat,
byte buffer[], int offset, int scanlineStride);
/**
* Stores pixel data from an int array into a rectangular region of the
* surface.
* The format of the pixels in the buffer is defined by the
* {@link PixelFormat} object and pixel format conversions will be
* performed as needed to store the data into the surface.
* The {@code pixelformat} must be a compatible
* {@code PixelFormat} type.
* The data for the first pixel at location {@code (x, y)} will be
* read from the array index specified by the {@code offset} parameter.
* Pixel data for a row will be read from adjacent locations within
* the array packed as tightly as possible for increasing X
* coordinates.
* Pixel data for adjacent rows will be read offset from each other
* by the number of int array elements defined by
* {@code scanlineStride}.
*
* @param x the X coordinate of the rectangular region to write
* @param y the Y coordinate of the rectangular region to write
* @param w the width of the rectangular region to write
* @param h the height of the rectangular region to write
* @param pixelformat the {@code PixelFormat} object
* defining the int format to read the pixels from buffer
* @param buffer an int array to containing the pixel data to store
* @param offset the offset into {@code buffer} to read the first
* pixel data
* @param scanlineStride the distance between the pixel data for the
* start of one row of data in the buffer to the start of the
* next row of data
*
* @throws java.lang.NullPointerException if {@code pixelformat} or {@code buffer} is {@code null}
*/
public void setPixels(int x, int y, int w, int h,
PixelFormat pixelformat,
int buffer[], int offset, int scanlineStride);
/**
* Stores pixel data retrieved from a {@code PixelReader} instance
* into a rectangular region of the surface.
* The data for the pixel on the surface at {@code (dstx, dsty)}
* will be retrieved from the {@code reader} from its location
* {@code (srcx, srcy)}.
* This method performs an operation which is semantically equivalent to
* (though likely much faster than) this pseudo-code:
*
* for (int y = 0; y < h, y++) {
* for (int x = 0; x < w; x++) {
* setArgb(dstx + x, dsty + y,
* reader.getArgb(srcx + x, srcy + y));
* }
* }
*
*
*
* @param dstx the X coordinate of the rectangular region to write
* @param dsty the Y coordinate of the rectangular region to write
* @param w the width of the rectangular region to write
* @param h the height of the rectangular region to write
* @param reader the {@link PixelReader} used to get the pixel data
* to write
* @param srcx the X coordinate of the data to read from {@code reader}
* @param srcy the Y coordinate of the data to read from {@code reader}
*
* @throws java.lang.NullPointerException if {@code reader} is {@code null}
*/
public void setPixels(int dstx, int dsty, int w, int h,
PixelReader reader, int srcx, int srcy);
}
