Complete rebase

2025-08-08 16:56:12 -03:00
parent 26a85d407b
commit 4ffbc4237d
13 changed files with 150 additions and 115 deletions
@@ -0,0 +1,94 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Map logical degrees -> wlr-randr transform for this device
+# Device reality: 0° logical == 270 transform (normal handheld portrait)
+map_degree() {
+  local d=${1:-}
+  case "$d" in
+    0)   echo 270;;     # logical 0 -> transform 270
+    90)  echo 180;;     # logical 90 -> transform 180 (fixed)
+    180) echo 90;;      # logical 180 -> transform 90
+    270) echo normal;;  # logical 270 -> transform normal (fixed)
+    *)   echo "";;
+  esac
+}
+
+# Pick the DSI output name dynamically (DSI-1 or DSI-2)
+detect_output() {
+  local out
+  out=$(wlr-randr | awk '/^DSI-[12]/{print $1; exit}') || true
+  if [[ -z "$out" ]]; then
+    echo "Error: No DSI output found (need Wayland + wlr-randr)" >&2
+    exit 1
+  fi
+  echo "$out"
+}
+
+# Read current transform from wlr-randr line like:
+#   DSI-1 … transform: 270
+current_transform() {
+  local out="$1"
+  # Query the single output and print the value on the "Transform:" line (field 2)
+  # Use only POSIX-friendly awk features for compatibility
+  local val
+  val=$(wlr-randr --output "$out" | awk 'tolower($1)=="transform:" {print $2; exit}') || true
+  if [[ -z "$val" ]]; then
+    # Fallback: parse from the summary line for that output
+    val=$(wlr-randr | awk -v o="$out" 'tolower($1)==tolower(o) {for(i=1;i<=NF;i++){if(tolower($i)=="transform:"){print $(i+1); exit}}}') || true
+  fi
+  echo "$val"
+}
+
+# Compute transform after rotating by a delta (in logical degrees),
+# using the device-specific logical<->transform mapping.
+compute_transform_with_delta() {
+  local cur="$1"
+  local delta="$2"  # can be negative (e.g., -90)
+  # Reverse-map current PHYSICAL state: transform -> logical degrees
+  local logical
+  case "$cur" in
+    270) logical=0;;
+    180) logical=90;;
+    90)  logical=180;;
+    normal|0) logical=270;;
+    *) logical=0;;
+  esac
+  # Normalize wrap-around for negative values safely
+  local next=$(( ( (logical + delta) % 360 + 360 ) % 360 ))
+  map_degree "$next"
+}
+
+main() {
+  local out; out=$(detect_output)
+  local arg=${1:-}
+  local transform
+
+  if [[ -z "$arg" ]]; then
+    local cur; cur=$(current_transform "$out")
+    transform=$(compute_transform_with_delta "$cur" 90)
+  else
+    # normalize arg (allow 0/90/180/270)
+    case "$arg" in
+      right)
+        local cur; cur=$(current_transform "$out")
+        transform=$(compute_transform_with_delta "$cur" 90)
+        ;;
+      left)
+        local cur; cur=$(current_transform "$out")
+        transform=$(compute_transform_with_delta "$cur" -90)
+        ;;
+      0|90|180|270) transform=$(map_degree "$arg");;
+      *) echo "Usage: ucon-rotate [right|left|0|90|180|270]" >&2; exit 2;;
+    esac
+  fi
+
+  if [[ -z "$transform" ]]; then
+    echo "Error: could not resolve transform" >&2
+    exit 1
+  fi
+
+  exec wlr-randr --output "$out" --transform "$transform"
+}
+
+main "$@"