feat: kra (krita) support

Cargo.lock

@@ -24,6 +24,17 @@ version = "2.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "320119579fcad9c21884f5c4861d16174d0e06250625266f50fe6898340abefa"
 
+[[package]]
+name = "aes"
+version = "0.9.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8eb277bec05f56a0e0591f155a484cbd0f4f07ff2905051a48c72f004f7ed58"
+dependencies = [
+ "cipher",
+ "cpubits",
+ "cpufeatures",
+]
+
 [[package]]
 name = "ahash"
 version = "0.8.12"
@@ -428,6 +439,16 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0d8c1fef690941d3e7788d328517591fecc684c084084702d6ff1641e993699a"
 
+[[package]]
+name = "block-buffer"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d2f6c7dbe95a6ed67ad9f18e57daf93a2f034c524b99fd2b76d18fdfeb6660aa"
+dependencies = [
+ "hybrid-array",
+ "zeroize",
+]
+
 [[package]]
 name = "block2"
 version = "0.5.1"
@@ -525,6 +546,15 @@ version = "1.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ae3f5d315924270530207e2a68396c3cc547f6dca3fbdca317cfb1a51edb593"
 
+[[package]]
+name = "bzip2"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f3a53fac24f34a81bc9954b5d6cfce0c21e18ec6959f44f56e8e90e4bb7c346c"
+dependencies = [
+ "libbz2-rs-sys",
+]
+
 [[package]]
 name = "calloop"
 version = "0.13.0"
@@ -610,6 +640,16 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
 
+[[package]]
+name = "cipher"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8cf2a2c93cd704877c0858356ed03480ff301ee950b43f1cbe4573b088bfa6c"
+dependencies = [
+ "crypto-common",
+ "inout",
+]
+
 [[package]]
 name = "clipboard-win"
 version = "5.4.1"
@@ -649,6 +689,12 @@ dependencies = [
  "x11rb",
 ]
 
+[[package]]
+name = "cmov"
+version = "0.5.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0c9ea0ac24bc397ab3c98583a3c9ba74fa56b09a4449bbe172b9b1ddb016027a"
+
 [[package]]
 name = "codespan-reporting"
 version = "0.12.0"
@@ -685,6 +731,18 @@ dependencies = [
  "crossbeam-utils",
 ]
 
+[[package]]
+name = "const-oid"
+version = "0.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6ef517f0926dd24a1582492c791b6a4818a4d94e789a334894aa15b0d12f55c"
+
+[[package]]
+name = "constant_time_eq"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3d52eff69cd5e647efe296129160853a42795992097e8af39800e1060caeea9b"
+
 [[package]]
 name = "core-foundation"
 version = "0.9.4"
@@ -779,6 +837,21 @@ dependencies = [
  "unicode-segmentation",
 ]
 
+[[package]]
+name = "cpubits"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15b85f9c39137c3a891689859392b1bd49812121d0d61c9caf00d46ed5ce06ae"
+
+[[package]]
+name = "cpufeatures"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8b2a41393f66f16b0823bb79094d54ac5fbd34ab292ddafb9a0456ac9f87d201"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "crc32fast"
 version = "1.5.0"
@@ -832,6 +905,15 @@ dependencies = [
  "wgpu",
 ]
 
+[[package]]
+name = "crypto-common"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ce6e4c961d6cd6c9a86db418387425e8bdeaf05b3c8bc1411e6dca4c252f1453"
+dependencies = [
+ "hybrid-array",
+]
+
 [[package]]
 name = "ctor"
 version = "0.10.1"
@@ -841,6 +923,15 @@ dependencies = [
  "dtor",
 ]
 
+[[package]]
+name = "ctutils"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d5515a3834141de9eafb9717ad39eea8247b5674e6066c404e8c4b365d2a29e"
+dependencies = [
+ "cmov",
+]
+
 [[package]]
 name = "cursor-icon"
 version = "1.2.0"
@@ -869,6 +960,31 @@ dependencies = [
  "system-deps",
 ]
 
+[[package]]
+name = "deflate64"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac6b926516df9c60bfa16e107b21086399f8285a44ca9711344b9e553c5146e2"
+
+[[package]]
+name = "deranged"
+version = "0.5.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7cd812cc2bc1d69d4764bd80df88b4317eaef9e773c75226407d9bc0876b211c"
+
+[[package]]
+name = "digest"
+version = "0.11.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f1dd6dbb5841937940781866fa1281a1ff7bd3bf827091440879f9994983d5c2"
+dependencies = [
+ "block-buffer",
+ "const-oid",
+ "crypto-common",
+ "ctutils",
+ "zeroize",
+]
+
 [[package]]
 name = "dirs"
 version = "6.0.0"
@@ -1118,6 +1234,7 @@ checksum = "843fba2746e448b37e26a819579957415c8cef339bf08564fe8b7ddbd959573c"
 dependencies = [
  "crc32fast",
  "miniz_oxide",
+ "zlib-rs",
 ]
 
 [[package]]
@@ -1341,8 +1458,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "300e883d756b2e4ec94e02791f39b04b522276138852cfc41d9fb7e904106099"
 dependencies = [
  "cfg-if",
+ "js-sys",
  "libc",
  "r-efi 6.0.0",
+ "wasm-bindgen",
 ]
 
 [[package]]
@@ -1536,6 +1655,24 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dfa686283ad6dd069f105e5ab091b04c62850d3e4cf5d67debad1933f55023df"
 
+[[package]]
+name = "hmac"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6303bc9732ae41b04cb554b844a762b4115a61bfaa81e3e83050991eeb56863f"
+dependencies = [
+ "digest",
+]
+
+[[package]]
+name = "hybrid-array"
+version = "0.4.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "707114b52a152fa7bdb290cd7cd5912d9467273b6d74e21b8d81aca1f8533f6b"
+dependencies = [
+ "typenum",
+]
+
 [[package]]
 name = "iced"
 version = "0.14.0"
@@ -1768,6 +1905,7 @@ dependencies = [
  "image",
  "jxl-oxide",
  "rfd",
+ "zip",
 ]
 
 [[package]]
@@ -1786,6 +1924,15 @@ dependencies = [
  "hashbrown 0.17.1",
 ]
 
+[[package]]
+name = "inout"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4250ce6452e92010fdf7268ccc5d14faa80bb12fc741938534c58f16804e03c7"
+dependencies = [
+ "hybrid-array",
+]
+
 [[package]]
 name = "interpolate_name"
 version = "0.2.4"
@@ -2107,6 +2254,12 @@ version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7a79a3332a6609480d7d0c9eab957bca6b455b91bb84e66d19f5ff66294b85b8"
 
+[[package]]
+name = "libbz2-rs-sys"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34b357333733e8260735ba5894eb928c02ecc69c78715f01a8019e7fa7f2db4c"
+
 [[package]]
 name = "libc"
 version = "0.2.186"
@@ -2214,6 +2367,15 @@ version = "0.16.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f66e8d5d03f609abc3a39e6f08e4164ebf1447a732906d39eb9b99b7919ef39"
 
+[[package]]
+name = "lzma-rust2"
+version = "0.16.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca93e534d1142d1d0dcca6d25fe302508a5dfb40b302802904577725ea0b695b"
+dependencies = [
+ "sha2",
+]
+
 [[package]]
 name = "malloc_buf"
 version = "0.0.6"
@@ -2433,6 +2595,12 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "num-conv"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "521739c6d2bac4aa25192232afe6841231376b2b26d4d9fae5ecf8ca5772e441"
+
 [[package]]
 name = "num-derive"
 version = "0.4.2"
@@ -2946,6 +3114,16 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "35fb2e5f958ec131621fdd531e9fc186ed768cbe395337403ae56c17a74c68ec"
 
+[[package]]
+name = "pbkdf2"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "112d82ceb8c5bf524d9af484d4e4970c9fd5a0cc15ba14ad93dccd28873b0629"
+dependencies = [
+ "digest",
+ "hmac",
+]
+
 [[package]]
 name = "percent-encoding"
 version = "2.3.2"
@@ -3055,6 +3233,18 @@ dependencies = [
  "portable-atomic",
 ]
 
+[[package]]
+name = "powerfmt"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
+
+[[package]]
+name = "ppmd-rust"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "efca4c95a19a79d1c98f791f10aebd5c1363b473244630bb7dbde1dc98455a24"
+
 [[package]]
 name = "ppv-lite86"
 version = "0.2.21"
@@ -3528,6 +3718,28 @@ dependencies = [
  "serde_core",
 ]
 
+[[package]]
+name = "sha1"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aacc4cc499359472b4abe1bf11d0b12e688af9a805fa5e3016f9a386dc2d0214"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
+[[package]]
+name = "sha2"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "446ba717509524cb3f22f17ecc096f10f4822d76ab5c0b9822c5f9c284e825f4"
+dependencies = [
+ "cfg-if",
+ "cpufeatures",
+ "digest",
+]
+
 [[package]]
 name = "shlex"
 version = "2.0.1"
@@ -3878,6 +4090,26 @@ dependencies = [
  "zune-jpeg",
 ]
 
+[[package]]
+name = "time"
+version = "0.3.54"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3e1d5e639ff6bab73cb6885cc7e7b1de96c3f32c68ec55f3952614bec1092244"
+dependencies = [
+ "deranged",
+ "js-sys",
+ "num-conv",
+ "powerfmt",
+ "serde_core",
+ "time-core",
+]
+
+[[package]]
+name = "time-core"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9e1c906769ad99c88eaa54e728060edef082f8e358ff32030cb7c7d315e81109"
+
 [[package]]
 name = "tiny-skia"
 version = "0.11.4"
@@ -4023,6 +4255,18 @@ dependencies = [
  "core_maths",
 ]
 
+[[package]]
+name = "typed-path"
+version = "0.12.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e28f89b80c87b8fb0cf04ab448d5dd0dd0ade2f8891bae878de66a75a28600e"
+
+[[package]]
+name = "typenum"
+version = "1.20.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6f5e870be6c3b371b77fe0ee0bafb859fa4964b4404c27de1d380043c4dda20"
+
 [[package]]
 name = "uds_windows"
 version = "1.2.1"
@@ -5027,6 +5271,85 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "zeroize"
+version = "1.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e13c156562582aa81c60cb29407084cdb54c4164760106ab78e6c5b0858cf64e"
+
+[[package]]
+name = "zip"
+version = "8.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2d04a6b5381502aa6087c94c669499eb1602eb9c5e8198e534de571f7154809b"
+dependencies = [
+ "aes",
+ "bzip2",
+ "constant_time_eq",
+ "crc32fast",
+ "deflate64",
+ "flate2",
+ "getrandom 0.4.3",
+ "hmac",
+ "indexmap",
+ "lzma-rust2",
+ "memchr",
+ "pbkdf2",
+ "ppmd-rust",
+ "sha1",
+ "time",
+ "typed-path",
+ "zeroize",
+ "zopfli",
+ "zstd",
+]
+
+[[package]]
+name = "zlib-rs"
+version = "0.6.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b142a20ec14a91d5bc708c1dc21b080c550113d8aa77afa29635673a65dd02c5"
+
+[[package]]
+name = "zopfli"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f05cd8797d63865425ff89b5c4a48804f35ba0ce8d125800027ad6017d2b5249"
+dependencies = [
+ "bumpalo",
+ "crc32fast",
+ "log",
+ "simd-adler32",
+]
+
+[[package]]
+name = "zstd"
+version = "0.13.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e91ee311a569c327171651566e07972200e76fcfe2242a4fa446149a3881c08a"
+dependencies = [
+ "zstd-safe",
+]
+
+[[package]]
+name = "zstd-safe"
+version = "7.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f49c4d5f0abb602a93fb8736af2a4f4dd9512e36f7f570d66e65ff867ed3b9d"
+dependencies = [
+ "zstd-sys",
+]
+
+[[package]]
+name = "zstd-sys"
+version = "2.0.16+zstd.1.5.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91e19ebc2adc8f83e43039e79776e3fda8ca919132d68a1fed6a5faca2683748"
+dependencies = [
+ "cc",
+ "pkg-config",
+]
+
 [[package]]
 name = "zune-core"
 version = "0.5.1"

Cargo.toml

@@ -7,6 +7,7 @@ license = "AGPL-3.0-or-later"
 [dependencies]
 dirs = "6.0.0"
 rfd = "0.17.2"
+zip = "8.6.0"
 
 [dependencies.iced]
 version = "0.14.0"

src/utils.rs

@@ -1,13 +1,19 @@
-use std::path::{Path, PathBuf};
+use std::{
+    fs,
+    io::{self, Read},
+    path::{Path, PathBuf},
+};
 
 use iced::widget;
 use image::{DynamicImage, ImageDecoder, ImageReader, RgbaImage};
 use rfd::FileDialog;
+use zip::ZipArchive;
 
 pub fn load_image(path: impl AsRef<Path>) -> Result<RgbaImage, String> {
     let path = path.as_ref();
 
-    let reader = match ImageReader::open(path) {
+    let decoded_image = if path.extension().is_some_and(|ext| ext == "kra") {
+        let reader = match fs::File::open(path).map(io::BufReader::new) {
             Ok(r) => r,
             Err(e) => {
                 return Err(format!(
@@ -17,7 +23,40 @@ pub fn load_image(path: impl AsRef<Path>) -> Result<RgbaImage, String> {
             }
         };
 
-    let mut decoder = match reader.into_decoder() {
+        let mut zip = match ZipArchive::new(reader) {
+            Ok(z) => z,
+            Err(e) => {
+                return Err(format!(
+                    "failed to open zip archive '{}': {e}",
+                    path.display()
+                ));
+            }
+        };
+
+        let mut reader = match zip.by_name("mergedimage.png") {
+            Ok(r) => r,
+            Err(e) => {
+                return Err(format!(
+                    "failed to open file in zip archive '{}': {e}",
+                    path.display()
+                ));
+            }
+        };
+
+        // reading it all and wrapping it with a Cursor
+        // is the only way I know to give it Seek
+        // (which is required by ImageReader)
+        let mut buf = Vec::new();
+        if let Err(e) = reader.read_to_end(&mut buf) {
+            return Err(format!(
+                "error when reading file in zip archive '{}': {e}",
+                path.display()
+            ));
+        };
+
+        let image_reader = ImageReader::with_format(io::Cursor::new(buf), image::ImageFormat::Png);
+
+        let decoder = match image_reader.into_decoder() {
             Ok(d) => d,
             Err(e) => {
                 return Err(format!(
@@ -27,6 +66,37 @@ pub fn load_image(path: impl AsRef<Path>) -> Result<RgbaImage, String> {
             }
         };
 
+        let decoded_image = match DynamicImage::from_decoder(decoder) {
+            Ok(i) => i,
+            Err(e) => {
+                return Err(format!("failed to decode image '{}': {e}", path.display()));
+            }
+        };
+
+        decoded_image
+    } else {
+        let image_reader = match ImageReader::open(path) {
+            Ok(r) => r,
+            Err(e) => {
+                return Err(format!(
+                    "failed to create image reader for '{}': {e}",
+                    path.display()
+                ));
+            }
+        };
+
+        let mut decoder = match image_reader.into_decoder() {
+            Ok(d) => d,
+            Err(e) => {
+                return Err(format!(
+                    "failed to create decoder for '{}': {e}",
+                    path.display()
+                ));
+            }
+        };
+
+        // we don't need to check this for the kra branch
+        // since PNGs don't have metadata oreintation
         let oreintation = match decoder.orientation() {
             Ok(o) => o,
             Err(e) => {
@@ -46,6 +116,9 @@ pub fn load_image(path: impl AsRef<Path>) -> Result<RgbaImage, String> {
 
         decoded_image.apply_orientation(oreintation);
 
+        decoded_image
+    };
+
     Ok(decoded_image.into_rgba8())
 }
 pub fn pick_image() -> Result<PathBuf, String> {
@@ -54,7 +127,7 @@ pub fn pick_image() -> Result<PathBuf, String> {
             "image",
             &[
                 "png", "PNG", "jpg", "JPG", "jpeg", "JPEG", "avif", "jxl", "bmp", "exr", "ff",
-                "gif", "hdr", "ico", "pnm", "qoi", "tga", "tiff", "webp",
+                "gif", "hdr", "ico", "pnm", "qoi", "tga", "tiff", "webp", "kra",
             ],
         )
         .pick_file()