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6 changes: 6 additions & 0 deletions
6
src/main/java/com/github/fabriciofx/cactoos/pdf/png/Body.java
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| package com.github.fabriciofx.cactoos.pdf.png; | ||
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| import com.github.fabriciofx.cactoos.pdf.Content; | ||
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| public interface Body extends Content { | ||
| } |
25 changes: 25 additions & 0 deletions
25
src/main/java/com/github/fabriciofx/cactoos/pdf/png/BytesAsInteger.java
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| package com.github.fabriciofx.cactoos.pdf.png; | ||
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| import org.cactoos.Bytes; | ||
| import org.cactoos.Scalar; | ||
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| public final class BytesAsInteger implements Scalar<Integer> { | ||
| private final Bytes bytes; | ||
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| public BytesAsInteger(final byte[] bytes) { | ||
| this(() -> bytes); | ||
| } | ||
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| public BytesAsInteger(final Bytes bytes) { | ||
| this.bytes = bytes; | ||
| } | ||
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| @Override | ||
| public Integer value() throws Exception { | ||
| final byte[] raw = this.bytes.asBytes(); | ||
| return ((raw[0] & 0xFF) << 24) | | ||
| ((raw[1] & 0xFF) << 16) | | ||
| ((raw[2] & 0xFF) << 8) | | ||
| (raw[3] & 0xFF); | ||
| } | ||
| } |
56 changes: 56 additions & 0 deletions
56
src/main/java/com/github/fabriciofx/cactoos/pdf/png/Color.java
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| /* | ||
| * The MIT License (MIT) | ||
| * | ||
| * Copyright (C) 2023 Fabrício Barros Cabral | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included | ||
| * in all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| */ | ||
| package com.github.fabriciofx.cactoos.pdf.png; | ||
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| public final class Color { | ||
| private int type; | ||
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| public Color(final int type) { | ||
| this.type = type; | ||
| } | ||
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| public int type() { | ||
| return this.type; | ||
| } | ||
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| public String space() { | ||
| final String space; | ||
| switch(this.type) { | ||
| case 0: | ||
| case 4: | ||
| space = "DeviceGray"; | ||
| break; | ||
| case 2: | ||
| case 6: | ||
| space = "DeviceRGB"; | ||
| break; | ||
| case 3: | ||
| space = "Indexed"; | ||
| break; | ||
| default: | ||
| space = "Unknown"; | ||
| } | ||
| return space; | ||
| } | ||
| } |
64 changes: 64 additions & 0 deletions
64
src/main/java/com/github/fabriciofx/cactoos/pdf/png/Header.java
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| /* | ||
| * The MIT License (MIT) | ||
| * | ||
| * Copyright (C) 2023 Fabrício Barros Cabral | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included | ||
| * in all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| */ | ||
| package com.github.fabriciofx.cactoos.pdf.png; | ||
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| import org.cactoos.Bytes; | ||
| import org.cactoos.Text; | ||
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| /** | ||
| * PNG Image Header | ||
| * | ||
| * PNG Image Header Structure: | ||
| * ---------------------------- | ||
| * | ||
| * Offset Length Field Name Description | ||
| * --------------------------------------------- | ||
| * 0 8 bytes Signature PNG file signature (137 80 78 71 13 10 26 10) | ||
| * 8 4 bytes Chunk Length Length of the chunk data (excluding length and type) | ||
| * 12 4 bytes Chunk Type Type of the chunk (e.g., IHDR for image header) | ||
| * 16 4 bytes Width Width of the image in pixels | ||
| * 20 4 bytes Height Height of the image in pixels | ||
| * 24 1 byte Bit Depth Number of bits per sample | ||
| * 25 1 byte Color Type Type of color encoding used | ||
| * 26 1 byte Compression Compression method used | ||
| * 27 1 byte Filter Method Filtering method used | ||
| * 28 1 byte Interlace Method Interlace method used | ||
| * | ||
| * Additional chunks (not included in the header): | ||
| * - Data chunks (IDAT) containing the image data | ||
| * - Palette chunks (PLTE) for indexed-color images | ||
| * - Transparency chunks (tRNS) for specifying transparency | ||
| * - Textual information chunks (tEXt, iTXt) for metadata | ||
| * - Other optional chunks for various purposes | ||
| */ | ||
| public interface Header extends Text, Bytes { | ||
| int length(); | ||
| int width(); | ||
| int height(); | ||
| int depth(); | ||
| Color color(); | ||
| int compression(); | ||
| int filter(); | ||
| int interlacing(); | ||
| } |
30 changes: 30 additions & 0 deletions
30
src/main/java/com/github/fabriciofx/cactoos/pdf/png/Img.java
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| @@ -0,0 +1,30 @@ | ||
| /* | ||
| * The MIT License (MIT) | ||
| * | ||
| * Copyright (C) 2023 Fabrício Barros Cabral | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included | ||
| * in all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| */ | ||
| package com.github.fabriciofx.cactoos.pdf.png; | ||
|
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| public interface Img { | ||
| Header header() throws Exception; | ||
| Body body() throws Exception; | ||
| Palette palette() throws Exception; | ||
| } |
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