diff options
Diffstat (limited to 'src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkTRNS.java')
-rw-r--r-- | src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkTRNS.java | 284 |
1 files changed, 141 insertions, 143 deletions
diff --git a/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkTRNS.java b/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkTRNS.java index 1de5c0833..b68776477 100644 --- a/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkTRNS.java +++ b/src/jogl/classes/jogamp/opengl/util/pngj/chunks/PngChunkTRNS.java @@ -1,143 +1,141 @@ -package jogamp.opengl.util.pngj.chunks;
-
-import jogamp.opengl.util.pngj.ImageInfo;
-import jogamp.opengl.util.pngj.PngHelperInternal;
-import jogamp.opengl.util.pngj.PngjException;
-
-/**
- * tRNS chunk.
- * <p>
- * see http://www.w3.org/TR/PNG/#11tRNS
- * <p>
- * this chunk structure depends on the image type
- */
-public class PngChunkTRNS extends PngChunkSingle {
- public final static String ID = ChunkHelper.tRNS;
-
- // http://www.w3.org/TR/PNG/#11tRNS
-
- // only one of these is meaningful, depending on the image type
- private int gray;
- private int red, green, blue;
- private int[] paletteAlpha = new int[] {};
-
- public PngChunkTRNS(ImageInfo info) {
- super(ID, info);
- }
-
- @Override
- public ChunkOrderingConstraint getOrderingConstraint() {
- return ChunkOrderingConstraint.AFTER_PLTE_BEFORE_IDAT;
- }
-
- @Override
- public ChunkRaw createRawChunk() {
- ChunkRaw c = null;
- if (imgInfo.greyscale) {
- c = createEmptyChunk(2, true);
- PngHelperInternal.writeInt2tobytes(gray, c.data, 0);
- } else if (imgInfo.indexed) {
- c = createEmptyChunk(paletteAlpha.length, true);
- for (int n = 0; n < c.len; n++) {
- c.data[n] = (byte) paletteAlpha[n];
- }
- } else {
- c = createEmptyChunk(6, true);
- PngHelperInternal.writeInt2tobytes(red, c.data, 0);
- PngHelperInternal.writeInt2tobytes(green, c.data, 0);
- PngHelperInternal.writeInt2tobytes(blue, c.data, 0);
- }
- return c;
- }
-
- @Override
- public void parseFromRaw(ChunkRaw c) {
- if (imgInfo.greyscale) {
- gray = PngHelperInternal.readInt2fromBytes(c.data, 0);
- } else if (imgInfo.indexed) {
- int nentries = c.data.length;
- paletteAlpha = new int[nentries];
- for (int n = 0; n < nentries; n++) {
- paletteAlpha[n] = (int) (c.data[n] & 0xff);
- }
- } else {
- red = PngHelperInternal.readInt2fromBytes(c.data, 0);
- green = PngHelperInternal.readInt2fromBytes(c.data, 2);
- blue = PngHelperInternal.readInt2fromBytes(c.data, 4);
- }
- }
-
- @Override
- public void cloneDataFromRead(PngChunk other) {
- PngChunkTRNS otherx = (PngChunkTRNS) other;
- gray = otherx.gray;
- red = otherx.red;
- green = otherx.red;
- blue = otherx.red;
- if (otherx.paletteAlpha != null) {
- paletteAlpha = new int[otherx.paletteAlpha.length];
- System.arraycopy(otherx.paletteAlpha, 0, paletteAlpha, 0, paletteAlpha.length);
- }
- }
-
- /**
- * Set rgb values
- *
- */
- public void setRGB(int r, int g, int b) {
- if (imgInfo.greyscale || imgInfo.indexed)
- throw new PngjException("only rgb or rgba images support this");
- red = r;
- green = g;
- blue = b;
- }
-
- public int[] getRGB() {
- if (imgInfo.greyscale || imgInfo.indexed)
- throw new PngjException("only rgb or rgba images support this");
- return new int[] { red, green, blue };
- }
-
- public void setGray(int g) {
- if (!imgInfo.greyscale)
- throw new PngjException("only grayscale images support this");
- gray = g;
- }
-
- public int getGray() {
- if (!imgInfo.greyscale)
- throw new PngjException("only grayscale images support this");
- return gray;
- }
-
- /**
- * WARNING: non deep copy
- */
- public void setPalletteAlpha(int[] palAlpha) {
- if (!imgInfo.indexed)
- throw new PngjException("only indexed images support this");
- paletteAlpha = palAlpha;
- }
-
- /**
- * to use when only one pallete index is set as totally transparent
- */
- public void setIndexEntryAsTransparent(int palAlphaIndex) {
- if (!imgInfo.indexed)
- throw new PngjException("only indexed images support this");
- paletteAlpha = new int[] { palAlphaIndex + 1 };
- for (int i = 0; i < palAlphaIndex; i++)
- paletteAlpha[i] = 255;
- paletteAlpha[palAlphaIndex] = 0;
- }
-
- /**
- * WARNING: non deep copy
- */
- public int[] getPalletteAlpha() {
- if (!imgInfo.indexed)
- throw new PngjException("only indexed images support this");
- return paletteAlpha;
- }
-
-}
+package jogamp.opengl.util.pngj.chunks; + +import jogamp.opengl.util.pngj.ImageInfo; +import jogamp.opengl.util.pngj.PngHelperInternal; +import jogamp.opengl.util.pngj.PngjException; + +/** + * tRNS chunk. + * <p> + * see http://www.w3.org/TR/PNG/#11tRNS + * <p> + * this chunk structure depends on the image type + */ +public class PngChunkTRNS extends PngChunkSingle { + public final static String ID = ChunkHelper.tRNS; + + // http://www.w3.org/TR/PNG/#11tRNS + + // only one of these is meaningful, depending on the image type + private int gray; + private int red, green, blue; + private int[] paletteAlpha = new int[] {}; + + public PngChunkTRNS(ImageInfo info) { + super(ID, info); + } + + @Override + public ChunkOrderingConstraint getOrderingConstraint() { + return ChunkOrderingConstraint.AFTER_PLTE_BEFORE_IDAT; + } + + @Override + public ChunkRaw createRawChunk() { + ChunkRaw c = null; + if (imgInfo.greyscale) { + c = createEmptyChunk(2, true); + PngHelperInternal.writeInt2tobytes(gray, c.data, 0); + } else if (imgInfo.indexed) { + c = createEmptyChunk(paletteAlpha.length, true); + for (int n = 0; n < c.len; n++) { + c.data[n] = (byte) paletteAlpha[n]; + } + } else { + c = createEmptyChunk(6, true); + PngHelperInternal.writeInt2tobytes(red, c.data, 0); + PngHelperInternal.writeInt2tobytes(green, c.data, 0); + PngHelperInternal.writeInt2tobytes(blue, c.data, 0); + } + return c; + } + + @Override + public void parseFromRaw(ChunkRaw c) { + if (imgInfo.greyscale) { + gray = PngHelperInternal.readInt2fromBytes(c.data, 0); + } else if (imgInfo.indexed) { + int nentries = c.data.length; + paletteAlpha = new int[nentries]; + for (int n = 0; n < nentries; n++) { + paletteAlpha[n] = (int) (c.data[n] & 0xff); + } + } else { + red = PngHelperInternal.readInt2fromBytes(c.data, 0); + green = PngHelperInternal.readInt2fromBytes(c.data, 2); + blue = PngHelperInternal.readInt2fromBytes(c.data, 4); + } + } + + @Override + public void cloneDataFromRead(PngChunk other) { + PngChunkTRNS otherx = (PngChunkTRNS) other; + gray = otherx.gray; + red = otherx.red; + green = otherx.green; + blue = otherx.blue; + if (otherx.paletteAlpha != null) { + paletteAlpha = new int[otherx.paletteAlpha.length]; + System.arraycopy(otherx.paletteAlpha, 0, paletteAlpha, 0, paletteAlpha.length); + } + } + + /** + * Set rgb values + * + */ + public void setRGB(int r, int g, int b) { + if (imgInfo.greyscale || imgInfo.indexed) + throw new PngjException("only rgb or rgba images support this"); + red = r; + green = g; + blue = b; + } + + public int[] getRGB() { + if (imgInfo.greyscale || imgInfo.indexed) + throw new PngjException("only rgb or rgba images support this"); + return new int[] { red, green, blue }; + } + + public void setGray(int g) { + if (!imgInfo.greyscale) + throw new PngjException("only grayscale images support this"); + gray = g; + } + + public int getGray() { + if (!imgInfo.greyscale) + throw new PngjException("only grayscale images support this"); + return gray; + } + + /** + * WARNING: non deep copy + */ + public void setPalletteAlpha(int[] palAlpha) { + if (!imgInfo.indexed) + throw new PngjException("only indexed images support this"); + paletteAlpha = palAlpha; + } + + /** + * to use when only one pallete index is set as totally transparent + */ + public void setIndexEntryAsTransparent(int palAlphaIndex) { + if (!imgInfo.indexed) + throw new PngjException("only indexed images support this"); + paletteAlpha = new int[] { palAlphaIndex + 1 }; + for (int i = 0; i < palAlphaIndex; i++) + paletteAlpha[i] = 255; + paletteAlpha[palAlphaIndex] = 0; + } + + /** + * WARNING: non deep copy + */ + public int[] getPalletteAlpha() { + return paletteAlpha; + } + +} |