Shortcuts you invent, rules you write, gestures you own - all still just data

Claude-Session: https://claude.ai/code/session_01Ms2FbjQy31TVf3CEvQhGM8
2026-08-25 01:51:59 -04:00
parent f9e5d3f470
commit 06c53d6c21
48 changed files with 4749 additions and 140 deletions
@@ -652,6 +652,81 @@ Singleton {
        root.applyOptions({ directScanoutPolicy: policy });
    }

+    // ── Color filters ───────────────────────────────────────────────────────
+    // The stored preference is an enum; what the compositor wants is a shader
+    // path. That mapping cannot be a `hypr:` block on the schema entry -- the
+    // read-back would compare "grayscale" against a filename and fail every
+    // shape and sweep contract -- so it lives here, and hypr/looks.lua does the
+    // same lookup for the value the config carries at launch.
+    //
+    // The shaders are installed by the hypr directory symlink, so the path is
+    // the deployed one rather than the repository's.
+    readonly property string shaderDir:
+        (Quickshell.env("XDG_CONFIG_HOME") || `${Quickshell.env("HOME")}/.config`) + "/hypr/shaders"
+
+    readonly property var colorFilterShaders: ({
+        "grayscale": "grayscale.frag",
+        "protanopia": "protanopia.frag",
+        "deuteranopia": "deuteranopia.frag",
+        "tritanopia": "tritanopia.frag"
+    })
+
+    // "" for none, and for any value this build does not ship a shader for --
+    // an unknown filter turns the filter off rather than leaving the previous
+    // one on under a new name.
+    function colorFilterPath(name: string): string {
+        const file = root.colorFilterShaders[String(name)];
+        return file === undefined ? "" : `${root.shaderDir}/${file}`;
+    }
+
+    property string colorFilterPending: ""
+
+    Process {
+        id: colorFilterWrite
+
+        stdout: StdioCollector {
+            onStreamFinished: {
+                // `hyprctl eval` exits 0 on a Lua error and reports it on
+                // stdout, so the exit status proves nothing. Read it back.
+                if (this.text.indexOf("error:") >= 0) {
+                    root.lastError = "The color filter could not be applied.";
+                    return;
+                }
+                colorFilterVerify.exec(["hyprctl", "-j", "getoption", "decoration:screen_shader"]);
+            }
+        }
+    }
+
+    Process {
+        id: colorFilterVerify
+
+        stdout: StdioCollector {
+            onStreamFinished: {
+                try {
+                    const observed = String(JSON.parse(this.text).str ?? "");
+                    if (observed !== root.colorFilterPending) {
+                        root.lastError = "The compositor did not take the color filter.";
+                        return;
+                    }
+                    root.lastError = "";
+                } catch (error) {
+                    root.lastError = "The compositor did not say whether the color filter applied.";
+                }
+            }
+        }
+    }
+
+    // Applies the filter to the running compositor. The preference is written
+    // by the row that calls this; nothing here stores anything.
+    function applyColorFilter(name: string): void {
+        if (colorFilterWrite.running)
+            return;
+        const path = root.colorFilterPath(name);
+        root.colorFilterPending = path;
+        colorFilterWrite.exec(["hyprctl", "eval",
+            `hl.config({ decoration = { screen_shader = "${path.replace(/["\\]/g, "")}" } })`]);
+    }
+
    // Replays every compositor-owned preference in one batch at shell start, so
    // a value the user changed in Settings survives a reboot even though the
    // Lua config only reads the file once, at launch.