Release 0.3.2

/bin/sh: /bin/bash: not found

.gitlab-ci.yml

@@ -1,6 +1,6 @@
 include:
   - project: 'freedesktop/ci-templates'             # the project to include from
-    ref: '98f557799157ebb0395cf11d40f01f61fbbace20' # git ref of that project
+    ref: '34f4ade99434043f88e164933f570301fd18b125' # git ref of that project
     file: '/templates/fedora.yml'                   # the actual file to include
 
 stages:
@@ -15,9 +15,9 @@ variables:
 # Version and tag for our current container
 .fedora:
   variables:
-    FDO_DISTRIBUTION_VERSION: '34'
+    FDO_DISTRIBUTION_VERSION: '35'
     # Update this to trigger a container rebuild
-    FDO_DISTRIBUTION_TAG: '2021-05-06.0'
+    FDO_DISTRIBUTION_TAG: '2021-11-23.0'
 
 build-fedora-container:
   extends:

Cargo.lock

@@ -22,9 +22,9 @@ dependencies = [
 
 [[package]]
 name = "anyhow"
-version = "1.0.42"
+version = "1.0.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "595d3cfa7a60d4555cb5067b99f07142a08ea778de5cf993f7b75c7d8fabc486"
+checksum = "61604a8f862e1d5c3229fdd78f8b02c68dcf73a4c4b05fd636d12240aaa242c1"
 
 [[package]]
 name = "arrayvec"
@@ -74,9 +74,9 @@ dependencies = [
 
 [[package]]
 name = "bitflags"
-version = "1.2.1"
+version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bitvec"
@@ -92,9 +92,9 @@ dependencies = [
 
 [[package]]
 name = "cairo-rs"
-version = "0.14.1"
+version = "0.14.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a408c13bbc04c3337b94194c1a4d04067097439b79dbc1dcbceba299d828b9ea"
+checksum = "9164355c892b026d6257e696dde5f3cb39beb3718297f0f161b562fe2ee3ab86"
 dependencies = [
  "bitflags",
  "cairo-sys-rs",
@@ -111,14 +111,14 @@ checksum = "d7c9c3928781e8a017ece15eace05230f04b647457d170d2d9641c94a444ff80"
 dependencies = [
  "glib-sys",
  "libc",
- "system-deps",
+ "system-deps 3.2.0",
 ]
 
 [[package]]
 name = "cc"
-version = "1.0.69"
+version = "1.0.70"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e70cc2f62c6ce1868963827bd677764c62d07c3d9a3e1fb1177ee1a9ab199eb2"
+checksum = "d26a6ce4b6a484fa3edb70f7efa6fc430fd2b87285fe8b84304fd0936faa0dc0"
 
 [[package]]
 name = "cexpr"
@@ -138,6 +138,15 @@ dependencies = [
  "smallvec",
 ]
 
+[[package]]
+name = "cfg-expr"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "edae0b9625d1fce32f7d64b71784d9b1bf8469ec1a9c417e44aaf16a9cbd7571"
+dependencies = [
+ "smallvec",
+]
+
 [[package]]
 name = "cfg-if"
 version = "0.1.10"
@@ -152,9 +161,9 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
 name = "clang-sys"
-version = "1.2.0"
+version = "1.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "853eda514c284c2287f4bf20ae614f8781f40a81d32ecda6e91449304dfe077c"
+checksum = "10612c0ec0e0a1ff0e97980647cb058a6e7aedb913d01d009c406b8b7d0b26ee"
 dependencies = [
  "glob",
  "libc",
@@ -227,11 +236,11 @@ dependencies = [
 
 [[package]]
 name = "errno-dragonfly"
-version = "0.1.1"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "14ca354e36190500e1e1fb267c647932382b54053c50b14970856c0b00a35067"
+checksum = "aa68f1b12764fab894d2755d2518754e71b4fd80ecfb822714a1206c2aab39bf"
 dependencies = [
- "gcc",
+ "cc",
  "libc",
 ]
 
@@ -253,24 +262,24 @@ checksum = "fed34cd105917e91daa4da6b3728c47b068749d6a62c59811f06ed2ac71d9da7"
 
 [[package]]
 name = "futures-channel"
-version = "0.3.16"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "74ed2411805f6e4e3d9bc904c95d5d423b89b3b25dc0250aa74729de20629ff9"
+checksum = "5da6ba8c3bb3c165d3c7319fc1cc8304facf1fb8db99c5de877183c08a273888"
 dependencies = [
  "futures-core",
 ]
 
 [[package]]
 name = "futures-core"
-version = "0.3.16"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af51b1b4a7fdff033703db39de8802c673eb91855f2e0d47dcf3bf2c0ef01f99"
+checksum = "88d1c26957f23603395cd326b0ffe64124b818f4449552f960d815cfba83a53d"
 
 [[package]]
 name = "futures-executor"
-version = "0.3.16"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4d0d535a57b87e1ae31437b892713aee90cd2d7b0ee48727cd11fc72ef54761c"
+checksum = "45025be030969d763025784f7f355043dc6bc74093e4ecc5000ca4dc50d8745c"
 dependencies = [
  "futures-core",
  "futures-task",
@@ -279,21 +288,21 @@ dependencies = [
 
 [[package]]
 name = "futures-io"
-version = "0.3.16"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0b0e06c393068f3a6ef246c75cdca793d6a46347e75286933e5e75fd2fd11582"
+checksum = "522de2a0fe3e380f1bc577ba0474108faf3f6b18321dbf60b3b9c39a75073377"
 
 [[package]]
 name = "futures-task"
-version = "0.3.16"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbe54a98670017f3be909561f6ad13e810d9a51f3f061b902062ca3da80799f2"
+checksum = "1d3d00f4eddb73e498a54394f228cd55853bdf059259e8e7bc6e69d408892e99"
 
 [[package]]
 name = "futures-util"
-version = "0.3.16"
+version = "0.3.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67eb846bfd58e44a8481a00049e82c43e0ccb5d61f8dc071057cb19249dd4d78"
+checksum = "36568465210a3a6ee45e1f165136d68671471a501e632e9a98d96872222b5481"
 dependencies = [
  "autocfg",
  "futures-core",
@@ -303,12 +312,6 @@ dependencies = [
  "slab",
 ]
 
-[[package]]
-name = "gcc"
-version = "0.3.55"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f5f3913fa0bfe7ee1fd8248b6b9f42a5af4b9d65ec2dd2c3c26132b950ecfc2"
-
 [[package]]
 name = "gdk-pixbuf"
 version = "0.14.0"
@@ -331,14 +334,14 @@ dependencies = [
  "glib-sys",
  "gobject-sys",
  "libc",
- "system-deps",
+ "system-deps 3.2.0",
 ]
 
 [[package]]
 name = "gdk4"
-version = "0.2.0"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ce41092cc569129a0afa34926e6dd1cf8411e25652d87febdea36859f7ff7ba"
+checksum = "4c0f7f98ad25b81ac9462f74a091b0e4c0983ed1e74d19a38230c772b4dcef81"
 dependencies = [
  "bitflags",
  "cairo-rs",
@@ -352,9 +355,9 @@ dependencies = [
 
 [[package]]
 name = "gdk4-sys"
-version = "0.2.0"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce39c71861b5bcde319fd4711a74e1bd6f4f474911170d51096597fef0b56011"
+checksum = "262a79666b42e1884577f11a050439a964b95dec55343ac6ace7930e1415fa18"
 dependencies = [
  "cairo-sys-rs",
  "gdk-pixbuf-sys",
@@ -364,14 +367,14 @@ dependencies = [
  "graphene-sys",
  "libc",
  "pango-sys",
- "system-deps",
+ "system-deps 4.0.0",
 ]
 
 [[package]]
 name = "gio"
-version = "0.14.0"
+version = "0.14.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "86c6823b39d46d22cac2466de261f28d7f049ebc18f7b35296a42c7ed8a88325"
+checksum = "f3a29d8062af72045518271a2cd98b4e1617ce43f5b4223ad0fb9a0eff8f718c"
 dependencies = [
  "bitflags",
  "futures-channel",
@@ -393,15 +396,15 @@ dependencies = [
  "glib-sys",
  "gobject-sys",
  "libc",
- "system-deps",
+ "system-deps 3.2.0",
  "winapi",
 ]
 
 [[package]]
 name = "glib"
-version = "0.14.2"
+version = "0.14.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dbecad7a3a898ee749d491ce2ae0decb0bce9e736f9747bc49159b1cea5d37f4"
+checksum = "d4a930b7208e6e0ab839eea5f65ac2b82109f729621430d47fe905e2e09d33f4"
 dependencies = [
  "bitflags",
  "futures-channel",
@@ -438,7 +441,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1c1d60554a212445e2a858e42a0e48cece1bd57b311a19a9468f70376cf554ae"
 dependencies = [
  "libc",
- "system-deps",
+ "system-deps 3.2.0",
 ]
 
 [[package]]
@@ -455,7 +458,7 @@ checksum = "aa92cae29759dae34ab5921d73fff5ad54b3d794ab842c117e36cafc7994c3f5"
 dependencies = [
  "glib-sys",
  "libc",
- "system-deps",
+ "system-deps 3.2.0",
 ]
 
 [[package]]
@@ -478,14 +481,14 @@ dependencies = [
  "glib-sys",
  "libc",
  "pkg-config",
- "system-deps",
+ "system-deps 3.2.0",
 ]
 
 [[package]]
 name = "gsk4"
-version = "0.2.0"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "64932b730eaad3340378a03d633616eeed6d6705b59b81c9f579c88be8932475"
+checksum = "20b71f2e2cc699c2e0fbfa22899eeaffd84f9c1dc01e9263deac8664eec22dc0"
 dependencies = [
  "bitflags",
  "cairo-rs",
@@ -499,9 +502,9 @@ dependencies = [
 
 [[package]]
 name = "gsk4-sys"
-version = "0.2.0"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "685ffc776bedd91d68f47b41239525778b669432889721d7050d045270549b9a"
+checksum = "30468aff80e4faadf22f9ba164ea17511a69a9995d7a13827a13424ef47b2472"
 dependencies = [
  "cairo-sys-rs",
  "gdk4-sys",
@@ -510,14 +513,14 @@ dependencies = [
  "graphene-sys",
  "libc",
  "pango-sys",
- "system-deps",
+ "system-deps 4.0.0",
 ]
 
 [[package]]
 name = "gtk4"
-version = "0.2.0"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c49e0311dac847a8ebc05e31f5c44c596314ee3b16c5f638ccfe24086d24bf1b"
+checksum = "906f9308d15789d96a736881582181d710ae0937197119df459f3d2b46ef6776"
 dependencies = [
  "bitflags",
  "cairo-rs",
@@ -538,9 +541,9 @@ dependencies = [
 
 [[package]]
 name = "gtk4-macros"
-version = "0.2.0"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbe4b77996bcf1ef20208c00043edda854ca2091b4be5e6a7c367f0f3846fa67"
+checksum = "4d0d008cdf23214c697482415dd20f666bdf3cc9f5e803b017223c17c5b59a6e"
 dependencies = [
  "anyhow",
  "heck",
@@ -554,9 +557,9 @@ dependencies = [
 
 [[package]]
 name = "gtk4-sys"
-version = "0.2.0"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3737e91619cf4257d8a07834f7a2c035d4daeaf9ad8e3958e56b2c411dbdca18"
+checksum = "d06be0a6322aa77dd372f726e97efbcbb192d9a824a414a8874f238effd7747c"
 dependencies = [
  "cairo-sys-rs",
  "gdk-pixbuf-sys",
@@ -568,7 +571,7 @@ dependencies = [
  "gsk4-sys",
  "libc",
  "pango-sys",
- "system-deps",
+ "system-deps 4.0.0",
 ]
 
 [[package]]
@@ -582,7 +585,7 @@ dependencies = [
 
 [[package]]
 name = "helvum"
-version = "0.3.0"
+version = "0.3.2"
 dependencies = [
  "env_logger 0.9.0",
  "gtk4",
@@ -642,9 +645,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.98"
+version = "0.2.103"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "320cfe77175da3a483efed4bc0adc1968ca050b098ce4f2f1c13a56626128790"
+checksum = "dd8f7255a17a627354f321ef0055d63b898c6fb27eff628af4d1b66b7331edf6"
 
 [[package]]
 name = "libloading"
@@ -669,7 +672,7 @@ dependencies = [
  "libc",
  "libspa-sys",
  "nom",
- "system-deps",
+ "system-deps 3.2.0",
 ]
 
 [[package]]
@@ -679,7 +682,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d301a2fc2fed0a97c13836408a4d98f419af0c2695ecf74e634a214c17beefa6"
 dependencies = [
  "bindgen",
- "system-deps",
+ "system-deps 3.2.0",
 ]
 
 [[package]]
@@ -740,9 +743,9 @@ checksum = "692fcb63b64b1758029e0a96ee63e049ce8c5948587f2f7208df04625e5f6b56"
 
 [[package]]
 name = "pango"
-version = "0.14.0"
+version = "0.14.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "415823a4fb9f1789785cd6e2d2413816f2ecff92380382969aaca9c400e13a19"
+checksum = "e1fc88307d9797976ea62722ff2ec5de3fae279c6e20100ed3f49ca1a4bf3f96"
 dependencies = [
  "bitflags",
  "glib",
@@ -760,7 +763,7 @@ dependencies = [
  "glib-sys",
  "gobject-sys",
  "libc",
- "system-deps",
+ "system-deps 3.2.0",
 ]
 
 [[package]]
@@ -816,20 +819,20 @@ checksum = "9b4aa5ef9f3afef7dbb335106f69bd6bb541259e8796c693810cde20db1eb949"
 dependencies = [
  "bindgen",
  "libspa-sys",
- "system-deps",
+ "system-deps 3.2.0",
 ]
 
 [[package]]
 name = "pkg-config"
-version = "0.3.19"
+version = "0.3.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
+checksum = "7c9b1041b4387893b91ee6746cddfc28516aff326a3519fb2adf820932c5e6cb"
 
 [[package]]
 name = "proc-macro-crate"
-version = "1.0.0"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "41fdbd1df62156fbc5945f4762632564d7d038153091c3fcf1067f6aef7cff92"
+checksum = "1ebace6889caf889b4d3f76becee12e90353f2b8c7d875534a71e5742f8f6f83"
 dependencies = [
  "thiserror",
  "toml",
@@ -861,9 +864,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.28"
+version = "1.0.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c7ed8b8c7b886ea3ed7dde405212185f423ab44682667c8c6dd14aa1d9f6612"
+checksum = "b9f5105d4fdaab20335ca9565e106a5d9b82b6219b5ba735731124ac6711d23d"
 dependencies = [
  "unicode-xid",
 ]
@@ -941,15 +944,15 @@ dependencies = [
 
 [[package]]
 name = "serde"
-version = "1.0.127"
+version = "1.0.130"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f03b9878abf6d14e6779d3f24f07b2cfa90352cfec4acc5aab8f1ac7f146fae8"
+checksum = "f12d06de37cf59146fbdecab66aa99f9fe4f78722e3607577a5375d66bd0c913"
 
 [[package]]
 name = "shlex"
-version = "1.0.0"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "42a568c8f2cd051a4d283bd6eb0343ac214c1b0f1ac19f93e1175b2dee38c73d"
+checksum = "43b2853a4d09f215c24cc5489c992ce46052d359b5109343cbafbf26bc62f8a3"
 
 [[package]]
 name = "signal"
@@ -969,9 +972,9 @@ checksum = "c307a32c1c5c437f38c7fd45d753050587732ba8628319fbdf12a7e289ccc590"
 
 [[package]]
 name = "smallvec"
-version = "1.6.1"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe0f37c9e8f3c5a4a66ad655a93c74daac4ad00c441533bf5c6e7990bb42604e"
+checksum = "1ecab6c735a6bb4139c0caafd0cc3635748bbb3acf4550e8138122099251f309"
 
 [[package]]
 name = "static_assertions"
@@ -1005,9 +1008,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.74"
+version = "1.0.77"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1873d832550d4588c3dbc20f01361ab00bfe741048f71e3fecf145a7cc18b29c"
+checksum = "5239bc68e0fef57495900cfea4e8dc75596d9a319d7e16b1e0a440d24e6fe0a0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1021,7 +1024,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "480c269f870722b3b08d2f13053ce0c2ab722839f472863c3e2d61ff3a1c2fa6"
 dependencies = [
  "anyhow",
- "cfg-expr",
+ "cfg-expr 0.8.1",
  "heck",
  "itertools",
  "pkg-config",
@@ -1032,6 +1035,19 @@ dependencies = [
  "version-compare",
 ]
 
+[[package]]
+name = "system-deps"
+version = "4.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c1889ab44c2a423ba9ba4d64cd04989b25c0280ca7ade813f05368418722a04"
+dependencies = [
+ "cfg-expr 0.9.0",
+ "heck",
+ "pkg-config",
+ "toml",
+ "version-compare",
+]
+
 [[package]]
 name = "tap"
 version = "1.0.1"
@@ -1058,18 +1074,18 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.26"
+version = "1.0.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93119e4feac1cbe6c798c34d3a53ea0026b0b1de6a120deef895137c0529bfe2"
+checksum = "602eca064b2d83369e2b2f34b09c70b605402801927c65c11071ac911d299b88"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.26"
+version = "1.0.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "060d69a0afe7796bf42e9e2ff91f5ee691fb15c53d38b4b62a9a53eb23164745"
+checksum = "bad553cc2c78e8de258400763a647e80e6d1b31ee237275d756f6836d204494c"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1099,9 +1115,9 @@ checksum = "8895849a949e7845e06bd6dc1aa51731a103c42707010a5b591c0038fb73385b"
 
 [[package]]
 name = "unicode-width"
-version = "0.1.8"
+version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9337591893a19b88d8d87f2cec1e73fad5cdfd10e5a6f349f498ad6ea2ffb1e3"
+checksum = "3ed742d4ea2bd1176e236172c8429aaf54486e7ac098db29ffe6529e0ce50973"
 
 [[package]]
 name = "unicode-xid"

Cargo.toml

@@ -1,8 +1,9 @@
 [package]
 name = "helvum"
-version = "0.3.0"
+version = "0.3.2"
 authors = ["Tom A. Wagner <tom.a.wagner@protonmail.com>"]
-edition = "2018"
+edition = "2021"
+rust-version = "1.56"
 license = "GPL-3.0-only"
 description = "A GTK patchbay for pipewire"
 repository = "https://gitlab.freedesktop.org/ryuukyu/helvum"
@@ -14,7 +15,7 @@ categories = ["gui", "multimedia"]
 
 [dependencies]
 pipewire = "0.4"
-gtk = { version = "0.2", package = "gtk4" }
+gtk = { version = "0.3", package = "gtk4" }
 
 log = "0.4.11"
 env_logger = "0.9.0"

LICENSE

@@ -1,7 +1,7 @@
                     GNU GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
@@ -631,8 +631,8 @@ to attach them to the start of each source file to most effectively
 state the exclusion of warranty; and each file should have at least
 the "copyright" line and a pointer to where the full notice is found.
 
-    Helvum
+    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) 2020  Ryuukyu
+    Copyright (C) <year>  <name of author>
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -645,14 +645,14 @@ the "copyright" line and a pointer to where the full notice is found.
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
   If the program does terminal interaction, make it output a short
 notice like this when it starts in an interactive mode:
 
-    Helvum  Copyright (C) 2020  Ryuukyu
+    <program>  Copyright (C) <year>  <name of author>
     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
     This is free software, and you are welcome to redistribute it
     under certain conditions; type `show c' for details.
@@ -664,11 +664,11 @@ might be different; for a GUI interface, you would use an "about box".
   You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
-<http://www.gnu.org/licenses/>.
+<https://www.gnu.org/licenses/>.
 
   The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
-<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,6 +1,6 @@
 Helvum is a GTK-based patchbay for pipewire, inspired by the JACK tool [catia](https://kx.studio/Applications:Catia).
 
-![Screenshot](screenshot.png)
+![Screenshot](docs/screenshot.png)
 
 [![Packaging status](https://repology.org/badge/vertical-allrepos/helvum.svg)](https://repology.org/project/helvum/versions)
 
@@ -17,35 +17,45 @@ More suggestions are welcome!
 ## Via flatpak (recommended)
 The recommended way to build is using flatpak, which will take care of all dependencies and avoid any problems that may come from different system configurations.
 
-First, install the required flatpak platform and SDK, if you dont have them already:
+If you don't have the flathub repo in your remote-list for flatpak you will need to add that first:
 ```shell
-$ flatpak install org.gnome.{Platform,Sdk}//40 org.freedesktop.Sdk.Extension.rust-stable//20.08
+$ flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
+```
+
+Then install the required flatpak platform and SDK, if you dont have them already:
+```shell
+$ flatpak install org.gnome.{Platform,Sdk}//41 org.freedesktop.Sdk.Extension.rust-stable//21.08 org.freedesktop.Sdk.Extension.llvm12//21.08
 ```
 
 To compile and install as a flatpak, run
 ```shell
-$ flatpak-builder --install flatpak-build/ org.freedesktop.ryuukyu.Helvum.json
+$ flatpak-builder --install flatpak-build/ build-aux/org.freedesktop.ryuukyu.Helvum.json
 ```
 
 You can then run the app via
 ```shell
-flatpak run org.freedesktop.ryuukyu.Helvum
+$ flatpak run org.freedesktop.ryuukyu.Helvum
 ```
 
 ## Manually
 For compilation, you will need:
 
+- Meson
 - An up-to-date rust toolchain
 - `libclang-3.7` or higher
 - `gtk-4.0` and `pipewire-0.3` development headers
 
-To compile, run
+To compile and install, run
 
-    $ cargo build --release
+```shell
+$ meson setup build && cd build
+$ meson compile
+$ meson install
+```
 
 in the repository root.
-The resulting binary will be at `target/release/helvum`.
+This will install the compiled project files into `/usr/local`.
 
 # License
 Helvum is distributed under the terms of the GPL3 license.
-See LICENSE for more information.
+See LICENSE for more information.

build-aux/cargo.sh

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+export MESON_BUILD_ROOT="$1"
+export MESON_SOURCE_ROOT="$2"
+export CARGO_TARGET_DIR="$MESON_BUILD_ROOT"/target
+export CARGO_HOME="$MESON_BUILD_ROOT"/cargo-home
+
+if [[ $4 = "development" ]]
+then
+    echo "DEBUG MODE"
+    cargo build --manifest-path \
+        "$MESON_SOURCE_ROOT/Cargo.toml" && \
+        cp "$CARGO_TARGET_DIR/debug/$5" "$3"
+else
+    echo "RELEASE MODE"
+    cargo build --manifest-path \
+        "$MESON_SOURCE_ROOT/Cargo.toml" --release && \
+        cp "$CARGO_TARGET_DIR/release/$5" "$3"
+fi

build-aux/dist-vendor.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+export DIST="$1"
+export SOURCE_ROOT="$2"
+
+cd "$SOURCE_ROOT"
+mkdir "$DIST"/.cargo
+cargo vendor > $DIST/.cargo/config
+# Move vendor into dist tarball directory
+mv vendor "$DIST"

build-aux/meson_post_install.py

@@ -0,0 +1,12 @@
+#!/usr/bin/env python3
+
+from os import environ, path
+from subprocess import call
+
+if not environ.get('DESTDIR', ''):
+    PREFIX = environ.get('MESON_INSTALL_PREFIX', '/usr/local')
+    DATA_DIR = path.join(PREFIX, 'share')
+    print('Updating icon cache...')
+    call(['gtk-update-icon-cache', '-qtf', path.join(DATA_DIR, 'icons/hicolor')])
+    print("Updating desktop database...")
+    call(["update-desktop-database", path.join(DATA_DIR, 'applications')])

build-aux/org.freedesktop.ryuukyu.Helvum.json

@@ -1,35 +1,39 @@
 {
     "app-id": "org.freedesktop.ryuukyu.Helvum",
     "runtime": "org.gnome.Platform",
-    "runtime-version": "40",
+    "runtime-version": "41",
     "sdk": "org.gnome.Sdk",
-    "sdk-extensions": ["org.freedesktop.Sdk.Extension.rust-stable"],
+    "sdk-extensions": [
+        "org.freedesktop.Sdk.Extension.rust-stable",
+        "org.freedesktop.Sdk.Extension.llvm12"
+    ],
     "command": "helvum",
-    "finish-args" : [
+    "finish-args": [
         "--socket=fallback-x11",
         "--socket=wayland",
         "--device=dri",
         "--share=ipc",
         "--filesystem=xdg-run/pipewire-0"
     ],
-    "build-options" : {
+    "build-options": {
-        "append-path" : "/usr/lib/sdk/rust-stable/bin",
+        "append-path": "/usr/lib/sdk/rust-stable/bin:/usr/lib/sdk/llvm12/bin",
-        "build-args" : [
+        "prepend-ld-library-path": "/usr/lib/sdk/llvm12/lib",
+        "build-args": [
             "--share=network"
         ]
     },
     "modules": [
         {
             "name": "Helvum",
-            "buildsystem": "simple",
+            "buildsystem": "meson",
-            "build-commands": [
-                "cargo install --path . --root /app --no-track"
-            ],
             "sources": [
                 {
                     "type": "dir",
-                    "path": "./"
+                    "path": "../"
                 }
+            ],
+            "config-opts": [
+                "-Dprofile=development"
             ]
         }
     ]

data/icons/meson.build

@@ -0,0 +1,9 @@
+install_data(
+  '@0@.svg'.format(base_id),
+  install_dir: iconsdir / 'hicolor' / 'scalable' / 'apps'
+)
+
+install_data(
+  '@0@-symbolic.svg'.format(base_id),
+  install_dir: iconsdir / 'hicolor' / 'symbolic' / 'apps',
+)

data/icons/org.freedesktop.ryuukyu.Helvum-symbolic.svg

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg height="16px" viewBox="0 0 16 16" width="16px" xmlns="http://www.w3.org/2000/svg">
+    <path d="m 3.5 2.5 h 9 c 1.378906 0 2.5 1.121094 2.5 2.5 v 5 c 0 1.378906 -1.121094 2.5 -2.5 2.5 h -9 c -1.378906 0 -2.5 -1.121094 -2.5 -2.5 v -5 c 0 -1.378906 1.121094 -2.5 2.5 -2.5 z m 0 0" fill="#241f31" fill-rule="evenodd"/>
+    <g fill="none" stroke="#8a8891">
+        <path d="m 11 7.5 h -6"/>
+        <path d="m 5 7.5 c 0 -4.15625 -1.382812 -10.855469 -3.90625 -13.25" stroke-linecap="round" stroke-linejoin="bevel" stroke-width="4"/>
+    </g>
+</svg>

data/icons/org.freedesktop.ryuukyu.Helvum.svg

@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg height="128px" viewBox="0 0 128 128" width="128px" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+    <linearGradient id="a" gradientUnits="userSpaceOnUse">
+        <stop offset="0" stop-color="#9a9996"/>
+        <stop offset="0.5" stop-color="#c0bfbc"/>
+        <stop offset="1" stop-color="#deddda"/>
+    </linearGradient>
+    <linearGradient id="b" x1="26.263471" x2="26.263586" xlink:href="#a" y1="24.848538" y2="37.1125"/>
+    <linearGradient id="c" gradientUnits="userSpaceOnUse" x1="7.39555839647" x2="120.60350567947" y1="82.86737386462" y2="82.86737386462">
+        <stop offset="0" stop-color="#5e5c64"/>
+        <stop offset="0.0384615" stop-color="#77767b"/>
+        <stop offset="0.0768555" stop-color="#5e5c64"/>
+        <stop offset="0.923077" stop-color="#5e5c64"/>
+        <stop offset="0.961538" stop-color="#77767b"/>
+        <stop offset="1" stop-color="#5e5c64"/>
+    </linearGradient>
+    <linearGradient id="d" gradientTransform="matrix(2.571428 0 0 2.454545 22.856596 -228.048061)" x1="16" x2="16" xlink:href="#a" y1="121.582512" y2="127.082512"/>
+    <linearGradient id="e" gradientTransform="matrix(2.571428 0 0 2.454545 22.856596 -253.563246)" x1="16" x2="16" xlink:href="#a" y1="121.582512" y2="127.082512"/>
+    <linearGradient id="f" gradientTransform="matrix(2.571428 0 0 2.454545 60.592569 -253.563246)" x1="16" x2="16" xlink:href="#a" y1="121.582512" y2="127.082512"/>
+    <linearGradient id="g" gradientTransform="matrix(2.571428 0 0 2.454545 60.592569 -228.048061)" x1="16" x2="16" xlink:href="#a" y1="121.582512" y2="127.082512"/>
+    <linearGradient id="h" gradientTransform="matrix(2.358499 0 0 2.251294 -11.472502 -204.652927)" gradientUnits="userSpaceOnUse" x1="12.5" x2="19.5" y1="113.832512" y2="113.832512">
+        <stop offset="0" stop-color="#c0bfbc"/>
+        <stop offset="0.5" stop-color="#9a9996"/>
+        <stop offset="1" stop-color="#c0bfbc"/>
+    </linearGradient>
+    <linearGradient id="i" gradientTransform="matrix(2.571428 0 0 2.454545 -14.879853 -228.048061)" x1="16" x2="16" xlink:href="#a" y1="121.582512" y2="127.082512"/>
+    <path d="m 34.519531 30.980469 c 0 3.386719 -3.695312 6.132812 -8.257812 6.132812 c -4.558594 0 -8.253907 -2.746093 -8.253907 -6.132812 s 3.695313 -6.132813 8.253907 -6.132813 c 4.5625 0 8.257812 2.746094 8.257812 6.132813 z m 0 0" fill="url(#b)" fill-rule="evenodd"/>
+    <path d="m 120.601562 82.867188 v 18.867187 c 0 5.226563 -4.207031 9.433594 -9.433593 9.433594 h -94.339844 c -5.226563 0 -9.433594 -4.207031 -9.433594 -9.433594 v -18.867187 z m 0 0" fill="url(#c)" fill-rule="evenodd"/>
+    <path d="m 16.828125 35.699219 c -5.226563 0 -9.433594 4.207031 -9.433594 9.433593 v 37.734376 c 0 5.226562 4.207031 9.433593 9.433594 9.433593 h 94.339844 c 5.226562 0 9.4375 -4.207031 9.4375 -9.433593 v -37.734376 c 0 -5.226562 -4.210938 -9.433593 -9.4375 -9.433593 h -76.648438 v 2.355469 h -16.511719 v -2.355469 z m 0 0" fill="#77767b" fill-rule="evenodd"/>
+    <path d="m 93.480469 76.378906 l -30.660157 -24.761718" fill="none" stroke="#77767b" stroke-linecap="square" stroke-width="3.74412"/>
+    <path d="m 64 58.691406 v 10.613282" fill="none" stroke="#999999" stroke-width="1.5"/>
+    <g fill-rule="evenodd">
+        <path d="m 75 77.132812 c 0 4.554688 -4.925781 8.25 -11 8.25 s -11 -3.695312 -11 -8.25 c 0 -4.558593 4.925781 -8.25 11 -8.25 s 11 3.691407 11 8.25 z m 0 0" fill="#e01b24"/>
+        <path d="m 73 77.132812 c 0 3.726563 -4.03125 6.75 -9 6.75 c -4.972656 0 -9 -3.023437 -9 -6.75 c 0 -3.730468 4.027344 -6.75 9 -6.75 c 4.96875 0 9 3.019532 9 6.75 z m 0 0" fill="url(#d)"/>
+        <path d="m 71 77.132812 c 0 2.898438 -3.132812 5.25 -7 5.25 s -7 -2.351562 -7 -5.25 c 0 -2.902343 3.132812 -5.25 7 -5.25 s 7 2.347657 7 5.25 z m 0 0" fill="#3d3846"/>
+        <path d="m 75 51.617188 c 0 4.554687 -4.925781 8.25 -11 8.25 s -11 -3.695313 -11 -8.25 c 0 -4.558594 4.925781 -8.25 11 -8.25 s 11 3.691406 11 8.25 z m 0 0" fill="#1c71d8"/>
+        <path d="m 73 51.617188 c 0 3.726562 -4.03125 6.75 -9 6.75 c -4.972656 0 -9 -3.023438 -9 -6.75 c 0 -3.730469 4.027344 -6.75 9 -6.75 c 4.96875 0 9 3.019531 9 6.75 z m 0 0" fill="url(#e)"/>
+        <path d="m 71 51.617188 c 0 2.898437 -3.132812 5.25 -7 5.25 s -7 -2.351563 -7 -5.25 c 0 -2.898438 3.132812 -5.25 7 -5.25 s 7 2.351562 7 5.25 z m 0 0" fill="#3d3846"/>
+        <path d="m 112.734375 51.617188 c 0 4.554687 -4.921875 8.25 -11 8.25 c -6.074219 0 -11 -3.695313 -11 -8.25 c 0 -4.558594 4.925781 -8.25 11 -8.25 c 6.078125 0 11 3.691406 11 8.25 z m 0 0" fill="#1c71d8"/>
+        <path d="m 110.734375 51.617188 c 0 3.726562 -4.027344 6.75 -9 6.75 c -4.96875 0 -9 -3.023438 -9 -6.75 c 0 -3.730469 4.03125 -6.75 9 -6.75 c 4.972656 0 9 3.019531 9 6.75 z m 0 0" fill="url(#f)"/>
+        <path d="m 108.734375 51.617188 c 0 2.898437 -3.132813 5.25 -7 5.25 c -3.863281 0 -7 -2.351563 -7 -5.25 c 0 -2.898438 3.136719 -5.25 7 -5.25 c 3.867187 0 7 2.351562 7 5.25 z m 0 0" fill="#3d3846"/>
+    </g>
+    <path d="m 101.734375 58.691406 v 10.613282" fill="none" stroke="#999999" stroke-width="1.5"/>
+    <path d="m 112.734375 77.132812 c 0 4.554688 -4.921875 8.25 -11 8.25 c -6.074219 0 -11 -3.695312 -11 -8.25 c 0 -4.558593 4.925781 -8.25 11 -8.25 c 6.078125 0 11 3.691407 11 8.25 z m 0 0" fill="#e01b24" fill-rule="evenodd"/>
+    <path d="m 110.734375 77.132812 c 0 3.726563 -4.027344 6.75 -9 6.75 c -4.96875 0 -9 -3.023437 -9 -6.75 c 0 -3.730468 4.03125 -6.75 9 -6.75 c 4.972656 0 9 3.019532 9 6.75 z m 0 0" fill="url(#g)" fill-rule="evenodd"/>
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+    <path d="m 18.007812 30.980469 v 20.636719 c 0.003907 3.417968 3.699219 6.191406 8.253907 6.191406 c 4.554687 0 8.25 -2.765625 8.253906 -6.183594 c 0 0 0 -0.003906 0 -0.007812 v -20.636719 c -1.308594 2.597656 -4.589844 6.132812 -8.253906 6.132812 c -3.660157 0 -6.941407 -3.535156 -8.253907 -6.132812 z m 0 0" fill="url(#h)" fill-rule="evenodd"/>
+    <path d="m 37.261719 77.132812 c 0 4.554688 -4.921875 8.25 -11 8.25 c -6.074219 0 -11 -3.695312 -11 -8.25 c 0 -4.558593 4.925781 -8.25 11 -8.25 c 6.078125 0 11 3.691407 11 8.25 z m 0 0" fill="#e01b24" fill-rule="evenodd"/>
+    <path d="m 35.261719 77.132812 c 0 3.726563 -4.027344 6.75 -9 6.75 c -4.96875 0 -9 -3.023437 -9 -6.75 c 0 -3.730468 4.03125 -6.75 9 -6.75 c 4.972656 0 9 3.019532 9 6.75 z m 0 0" fill="url(#i)" fill-rule="evenodd"/>
+    <path d="m 33.261719 77.132812 c 0 2.898438 -3.132813 5.25 -7 5.25 c -3.863281 0 -7 -2.351562 -7 -5.25 c 0 -2.902343 3.136719 -5.25 7 -5.25 c 3.867187 0 7 2.347657 7 5.25 z m 0 0" fill="#3d3846" fill-rule="evenodd"/>
+    <path d="m 34.519531 30.980469 c 0 3.386719 -3.695312 6.132812 -8.257812 6.132812 c -4.558594 0 -8.253907 -2.746093 -8.253907 -6.132812 s 3.695313 -6.132813 8.253907 -6.132813 c 4.5625 0 8.257812 2.746094 8.257812 6.132813 z m 0 0" fill="#c0bfbc" fill-rule="evenodd"/>
+    <path d="m 30.980469 30.980469 c 0 1.953125 -2.113281 3.539062 -4.71875 3.539062 c -2.601563 0 -4.714844 -1.585937 -4.714844 -3.539062 s 2.113281 -3.539063 4.714844 -3.539063 c 2.605469 0 4.71875 1.585938 4.71875 3.539063 z m 0 0" fill="#1a5fb4" fill-rule="evenodd"/>
+    <path d="m 26.261719 30.980469 c 0 -7.074219 0.628906 -18.371094 -10.285157 -21.847657 c -11.828124 -3.765624 -33.882812 3 -33.882812 3" fill="none" stroke="#1a5fb4" stroke-width="9.434"/>
+</svg>

data/meson.build

@@ -0,0 +1,24 @@
+subdir('icons')
+
+desktop_conf = configuration_data()
+desktop_conf.set('icon', base_id)
+desktop_file = configure_file(
+  input: '@0@.desktop.in'.format(base_id),
+  output: '@BASENAME@',
+  configuration: desktop_conf
+)
+
+if desktop_file_validate.found()
+  test(
+    'validate-desktop',
+    desktop_file_validate,
+    args: [
+      desktop_file
+    ],
+  )
+endif
+
+install_data(
+  desktop_file,
+  install_dir: datadir / 'applications'
+)

data/org.freedesktop.ryuukyu.Helvum.desktop.in

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Name=Helvum
+GenericName=Patchbay
+Comment=A patchbay for pipewire
+Type=Application
+Exec=helvum
+Terminal=false
+Categories=AudioVideo;Audio;Video;Midi;Settings;GNOME;GTK;
+Icon=@icon@

meson.build

@@ -0,0 +1,38 @@
+project(
+  'helvum',
+  'rust',
+  version: '0.3.2',
+  license: 'GPL-3.0',
+  meson_version: '>=0.50.0'
+)
+
+base_id = 'org.freedesktop.ryuukyu.Helvum'
+
+dependency('glib-2.0', version: '>= 2.48')
+dependency('gtk4',     version: '>= 4.4.0')
+dependency('libpipewire-0.3')
+
+desktop_file_validate = find_program('desktop-file-validate', required: false)
+cargo = find_program('cargo', required: true)
+cargo_script = find_program('build-aux/cargo.sh')
+
+prefix = get_option('prefix')
+bindir = prefix / get_option('bindir')
+datadir = prefix / get_option('datadir')
+iconsdir = datadir / 'icons'
+
+meson.add_dist_script(
+  'build-aux/dist-vendor.sh',
+  meson.build_root() / 'meson-dist' / meson.project_name() + '-' + meson.project_version(),
+  meson.source_root()
+)
+
+cargo_sources = files(
+  'Cargo.toml',
+  'Cargo.lock',
+)
+
+subdir('src')
+subdir('data')
+
+meson.add_install_script('build-aux/meson_post_install.py')

meson_options.txt

@@ -0,0 +1,11 @@
+option(
+  'profile',
+  type: 'combo',
+  choices: [
+    'default',
+    'development'
+  ],
+  value: 'default',
+  description: 'The build profile for Helvum. One of "default" or "development".'
+)
+

src/application.rs

@@ -1,3 +1,22 @@
+// application.rs
+//
+// Copyright 2021 Tom A. Wagner <tom.a.wagner@protonmail.com>
+//
+// This program 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 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
 use std::cell::RefCell;
 
 use gtk::{
@@ -11,7 +30,7 @@ use pipewire::{channel::Sender, spa::Direction};
 
 use crate::{
     view::{self},
-    GtkMessage, MediaType, PipewireLink, PipewireMessage,
+    GtkMessage, MediaType, NodeType, PipewireLink, PipewireMessage,
 };
 
 static STYLE: &str = include_str!("style.css");
@@ -108,7 +127,7 @@ impl Application {
                 @weak app => @default-return Continue(true),
                 move |msg| {
                     match msg {
-                        PipewireMessage::NodeAdded{ id, name } => app.add_node(id, name.as_str()),
+                        PipewireMessage::NodeAdded{ id, name, node_type } => app.add_node(id, name.as_str(), node_type),
                         PipewireMessage::PortAdded{ id, node_id, name, direction, media_type } => app.add_port(id, name.as_str(), node_id, direction, media_type),
                         PipewireMessage::LinkAdded{ id, node_from, port_from, node_to, port_to, active} => app.add_link(id, node_from, port_from, node_to, port_to, active),
                         PipewireMessage::LinkStateChanged { id, active } => app.link_state_changed(id, active), // TODO
@@ -125,12 +144,14 @@ impl Application {
     }
 
     /// Add a new node to the view.
-    fn add_node(&self, id: u32, name: &str) {
+    fn add_node(&self, id: u32, name: &str, node_type: Option<NodeType>) {
         info!("Adding node to graph: id {}", id);
 
-        imp::Application::from_instance(self)
+        imp::Application::from_instance(self).graphview.add_node(
-            .graphview
+            id,
-            .add_node(id, view::Node::new(name));
+            view::Node::new(name),
+            node_type,
+        );
     }
 
     /// Add a new port to the view.

src/main.rs

@@ -1,3 +1,22 @@
+// main.rs
+//
+// Copyright 2021 Tom A. Wagner <tom.a.wagner@protonmail.com>
+//
+// This program 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 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
 mod application;
 mod pipewire_connection;
 mod view;
@@ -23,6 +42,7 @@ enum PipewireMessage {
     NodeAdded {
         id: u32,
         name: String,
+        node_type: Option<NodeType>,
     },
     PortAdded {
         id: u32,
@@ -55,6 +75,12 @@ enum PipewireMessage {
     },
 }
 
+#[derive(Debug, Clone)]
+pub enum NodeType {
+    Input,
+    Output,
+}
+
 #[derive(Debug, Copy, Clone)]
 pub enum MediaType {
     Audio,

src/meson.build

@@ -0,0 +1,32 @@
+rust_sources = files(
+  'application.rs',
+  'main.rs',
+  'pipewire_connection.rs',
+  'pipewire_connection/state.rs',
+  'style.css',
+  'view/graph_view.rs',
+  'view/mod.rs',
+  'view/node.rs',
+  'view/port.rs',
+)
+
+custom_target(
+  'cargo-build',
+  build_by_default: true,
+  input: [
+    cargo_sources,
+    rust_sources
+  ],
+  output: meson.project_name(),
+  console: true,
+  install: true,
+  install_dir: bindir,
+  command: [
+    cargo_script,
+    meson.build_root(),
+    meson.source_root(),
+    '@OUTPUT@',
+    get_option('profile'),
+    meson.project_name(),
+  ],
+)

src/pipewire_connection.rs

@@ -1,3 +1,22 @@
+// pipewire_connection.rs
+//
+// Copyright 2021 Tom A. Wagner <tom.a.wagner@protonmail.com>
+//
+// This program 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 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
 mod state;
 
 use std::{cell::RefCell, collections::HashMap, rc::Rc};
@@ -14,7 +33,7 @@ use pipewire::{
     Context, Core, MainLoop,
 };
 
-use crate::{GtkMessage, MediaType, PipewireMessage};
+use crate::{GtkMessage, MediaType, NodeType, PipewireMessage};
 use state::{Item, State};
 
 enum ProxyItem {
@@ -112,6 +131,27 @@ fn handle_node(
         }
     });
 
+    let media_class = |class: &str| {
+        if class.contains("Sink") || class.contains("Input") {
+            Some(NodeType::Input)
+        } else if class.contains("Source") || class.contains("Output") {
+            Some(NodeType::Output)
+        } else {
+            None
+        }
+    };
+
+    let node_type = props
+        .get("media.category")
+        .and_then(|class| {
+            if class.contains("Duplex") {
+                None
+            } else {
+                props.get("media.class").and_then(media_class)
+            }
+        })
+        .or_else(|| props.get("media.class").and_then(media_class));
+
     state.borrow_mut().insert(
         node.id,
         Item::Node {
@@ -121,7 +161,11 @@ fn handle_node(
     );
 
     sender
-        .send(PipewireMessage::NodeAdded { id: node.id, name })
+        .send(PipewireMessage::NodeAdded {
+            id: node.id,
+            name,
+            node_type,
+        })
         .expect("Failed to send message");
 }
 

src/pipewire_connection/state.rs

@@ -1,3 +1,22 @@
+// state.rs
+//
+// Copyright 2021 Tom A. Wagner <tom.a.wagner@protonmail.com>
+//
+// This program 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 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
 use std::collections::HashMap;
 
 use crate::MediaType;

src/style.css

@@ -1,14 +1,23 @@
+@define-color audio rgb(50,100,240);
+@define-color video rgb(200,200,0);
+@define-color midi rgb(200,0,50);
+@define-color graphview-link #808080;
+
 .audio {
-    background: rgb(50,100,240);
+    background: @audio;
     color: black;
 }
 
 .video {
-    background: rgb(200,200,0);
+    background: @video;
     color: black;
 }
 
 .midi {
-    background: rgb(200,0,50);
+    background: @midi;
     color: black;
 }
+
+graphview {
+    background: @text_view_bg;
+}

src/view/graph_view.rs

@@ -1,3 +1,22 @@
+// graph_view.rs
+//
+// Copyright 2021 Tom A. Wagner <tom.a.wagner@protonmail.com>
+//
+// This program 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 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
 use super::{Node, Port};
 
 use gtk::{
@@ -8,7 +27,9 @@ use gtk::{
 };
 use log::{error, warn};
 
-use std::collections::HashMap;
+use std::{cmp::Ordering, collections::HashMap};
+
+use crate::NodeType;
 
 mod imp {
     use super::*;
@@ -33,6 +54,7 @@ mod imp {
         fn class_init(klass: &mut Self::Class) {
             // The layout manager determines how child widgets are laid out.
             klass.set_layout_manager_type::<gtk::FixedLayout>();
+            klass.set_css_name("graphview");
         }
     }
 
@@ -45,27 +67,32 @@ mod imp {
 
             drag_controller.connect_drag_begin(
                 clone!(@strong drag_state => move |drag_controller, x, y| {
-                let mut drag_state = drag_state.borrow_mut();
+                    let mut drag_state = drag_state.borrow_mut();
-                let widget = drag_controller
+                    let widget = drag_controller
-                    .widget()
+                        .widget()
-                    .expect("drag-begin event has no widget")
+                        .expect("drag-begin event has no widget")
-                    .dynamic_cast::<Self::Type>()
+                        .dynamic_cast::<Self::Type>()
-                    .expect("drag-begin event is not on the GraphView");
+                        .expect("drag-begin event is not on the GraphView");
-                // pick() should at least return the widget itself.
+                    // pick() should at least return the widget itself.
-                let target = widget.pick(x, y, gtk::PickFlags::DEFAULT).expect("drag-begin pick() did not return a widget");
+                    let target = widget.pick(x, y, gtk::PickFlags::DEFAULT).expect("drag-begin pick() did not return a widget");
-                *drag_state = if target.ancestor(Port::static_type()).is_some() {
+                    *drag_state = if target.ancestor(Port::static_type()).is_some() {
-                    // The user targeted a port, so the dragging should be handled by the Port
+                        // The user targeted a port, so the dragging should be handled by the Port
-                    // component instead of here.
+                        // component instead of here.
-                    None
+                        None
-                } else if let Some(target) = target.ancestor(Node::static_type()) {
+                    } else if let Some(target) = target.ancestor(Node::static_type()) {
-                    // The user targeted a Node without targeting a specific Port.
+                        // The user targeted a Node without targeting a specific Port.
-                    // Drag the Node around the screen.
+                        // Drag the Node around the screen.
-                    let (x, y) = widget.get_node_position(&target);
+                        if let Some((x, y)) = widget.get_node_position(&target) {
-                    Some((target, x, y))
+                            Some((target, x, y))
-                } else {
+                        } else {
-                    None
+                            error!("Failed to obtain position of dragged node, drag aborted.");
+                            None
+                        }
+                    } else {
+                        None
+                    }
                 }
-            }));
+            ));
             drag_controller.connect_drag_update(
                 clone!(@strong drag_state => move |drag_controller, x, y| {
                     let widget = drag_controller
@@ -97,24 +124,13 @@ mod imp {
             Try to use relative units (em) and colours from the theme as much as possible. */
 
             let alloc = widget.allocation();
+            let widget_bounds =
+                graphene::Rect::new(0.0, 0.0, alloc.width as f32, alloc.height as f32);
 
             let background_cr = snapshot
-                .append_cairo(&graphene::Rect::new(
+                .append_cairo(&widget_bounds)
-                    0.0,
-                    0.0,
-                    alloc.width as f32,
-                    alloc.height as f32,
-                ))
                 .expect("Failed to get cairo context");
 
-            // Try to replace the background color with a darker one from the theme.
-            if let Some(rgba) = widget.style_context().lookup_color("text_view_bg") {
-                background_cr.set_source_rgb(rgba.red.into(), rgba.green.into(), rgba.blue.into());
-                if let Err(e) = background_cr.paint() {
-                    warn!("Failed to paint graphview background: {}", e);
-                };
-            } // TODO: else log colour not found
-
             // Draw a nice grid on the background.
             background_cr.set_source_rgb(0.18, 0.18, 0.18);
             background_cr.set_line_width(0.2); // TODO: Set to 1px
@@ -149,8 +165,25 @@ mod imp {
                     alloc.height as f32,
                 ))
                 .expect("Failed to get cairo context");
+
             link_cr.set_line_width(2.0);
-            link_cr.set_source_rgb(0.0, 0.0, 0.0);
+
+            let gtk::gdk::RGBA {
+                red,
+                green,
+                blue,
+                alpha,
+            } = widget
+                .style_context()
+                .lookup_color("graphview-link")
+                .unwrap_or(gtk::gdk::RGBA {
+                    red: 0.0,
+                    green: 0.0,
+                    blue: 0.0,
+                    alpha: 0.0,
+                });
+            link_cr.set_source_rgba(red.into(), green.into(), blue.into(), alpha.into());
+
             for (link, active) in self.links.borrow().values() {
                 if let Some((from_x, from_y, to_x, to_y)) = self.get_link_coordinates(link) {
                     link_cr.move_to(from_x, from_y);
@@ -162,15 +195,24 @@ mod imp {
                         link_cr.set_dash(&[10.0, 5.0], 0.0);
                     }
 
+                    // If the output port is farther right than the input port and they have
+                    // a similar y coordinate, apply a y offset to the control points
+                    // so that the curve sticks out a bit.
+                    let y_control_offset = if from_x > to_x {
+                        f64::max(0.0, 25.0 - (from_y - to_y).abs())
+                    } else {
+                        0.0
+                    };
+
                     // Place curve control offset by half the x distance between the two points.
                     // This makes the curve scale well for varying distances between the two ports,
                     // especially when the output port is farther right than the input port.
                     let half_x_dist = f64::abs(from_x - to_x) / 2.0;
                     link_cr.curve_to(
                         from_x + half_x_dist,
-                        from_y,
+                        from_y - y_control_offset,
                         to_x - half_x_dist,
-                        to_y,
+                        to_y - y_control_offset,
                         to_x,
                         to_y,
                     );
@@ -239,14 +281,37 @@ impl GraphView {
         glib::Object::new(&[]).expect("Failed to create GraphView")
     }
 
-    pub fn add_node(&self, id: u32, node: Node) {
+    pub fn add_node(&self, id: u32, node: Node, node_type: Option<NodeType>) {
         let private = imp::GraphView::from_instance(self);
         node.set_parent(self);
 
-        // Place widgets in colums of 4, growing down, then right.
+        // Place widgets in colums of 3, growing down
-        // TODO: Make a better positioning algorithm.
+        let x = if let Some(node_type) = node_type {
-        let x = ((private.nodes.borrow().len() / 4) as f32 * 400.0) + 20.0; // This relies on integer division rounding down.
+            match node_type {
-        let y = (private.nodes.borrow().len() as f32 % 4.0 * 100.0) + 20.0;
+                NodeType::Output => 20.0,
+                NodeType::Input => 820.0,
+            }
+        } else {
+            420.0
+        };
+
+        let y = private
+            .nodes
+            .borrow()
+            .values()
+            .filter_map(|node| {
+                // Map nodes to locations, discard nodes without location
+                self.get_node_position(&node.clone().upcast())
+            })
+            .filter(|(x2, _)| {
+                // Only look for other nodes that have a similar x coordinate
+                (x - x2).abs() < 50.0
+            })
+            .max_by(|y1, y2| {
+                // Get max in column
+                y1.partial_cmp(y2).unwrap_or(Ordering::Equal)
+            })
+            .map_or(20_f32, |(_x, y)| y + 100.0);
 
         self.move_node(&node.clone().upcast(), x, y);
 
@@ -308,7 +373,10 @@ impl GraphView {
         self.queue_draw();
     }
 
-    pub(super) fn get_node_position(&self, node: &gtk::Widget) -> (f32, f32) {
+    /// Get the position of the specified node inside the graphview.
+    ///
+    /// Returns `None` if the node is not in the graphview.
+    pub(super) fn get_node_position(&self, node: &gtk::Widget) -> Option<(f32, f32)> {
         let layout_manager = self
             .layout_manager()
             .expect("Failed to get layout manager")
@@ -316,12 +384,13 @@ impl GraphView {
             .expect("Failed to cast to FixedLayout");
 
         let node = layout_manager
-            .layout_child(node)
+            .layout_child(node)?
-            .expect("Could not get layout child")
             .dynamic_cast::<gtk::FixedLayoutChild>()
             .expect("Could not cast to FixedLayoutChild");
-        let transform = node.transform().unwrap_or_default();
+        let transform = node
-        transform.to_translate()
+            .transform()
+            .expect("Failed to obtain transform from layout child");
+        Some(transform.to_translate())
     }
 
     pub(super) fn move_node(&self, node: &gtk::Widget, x: f32, y: f32) {

src/view/mod.rs

@@ -1,3 +1,22 @@
+// mod.rs
+//
+// Copyright 2021 Tom A. Wagner <tom.a.wagner@protonmail.com>
+//
+// This program 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 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
 //! The view presented to the user.
 //!
 //! This module contains gtk widgets needed to present the graphical user interface.

src/view/node.rs

@@ -1,3 +1,22 @@
+// node.rs
+//
+// Copyright 2021 Tom A. Wagner <tom.a.wagner@protonmail.com>
+//
+// This program 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 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
 use gtk::{glib, prelude::*, subclass::prelude::*};
 use pipewire::spa::Direction;
 

src/view/port.rs

@@ -1,3 +1,22 @@
+// port.rs
+//
+// Copyright 2021 Tom A. Wagner <tom.a.wagner@protonmail.com>
+//
+// This program 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 3 of the License, or
+// (at your option) any later version.
+//
+// This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// SPDX-License-Identifier: GPL-3.0-only
+
 use gtk::{
     gdk,
     glib::{self, clone, subclass::Signal},