Just rely on Hyprland finding the right nearest valid scale
This commit is contained in:
@@ -1,165 +1,19 @@
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#!/bin/bash
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#!/bin/bash
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# Get the active monitor (the one with the cursor)
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# Get the active monitor (the one with the cursor)
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ACTIVE_MONITOR=$(hyprctl monitors -j | jq -r '.[] | select(.focused == true) | .name')
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MONITOR_INFO=$(hyprctl monitors -j | jq -r '.[] | select(.focused == true)')
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MONITOR_INFO=$(hyprctl monitors -j | jq -r '.[] | select(.focused == true)')
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ACTIVE_MONITOR=$(echo "$MONITOR_INFO" | jq -r '.name')
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# Get current scale and pixel dimensions of active monitor
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CURRENT_SCALE=$(echo "$MONITOR_INFO" | jq -r '.scale')
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CURRENT_SCALE=$(echo "$MONITOR_INFO" | jq -r '.scale')
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PIXEL_WIDTH=$(echo "$MONITOR_INFO" | jq -r '.width')
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PIXEL_HEIGHT=$(echo "$MONITOR_INFO" | jq -r '.height')
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# Function to check if a scale produces integer logical dimensions using awk
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# Cycle through scales: 1 → 1.6 → 2 → 3 → 1
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is_valid_scale() {
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CURRENT_INT=$(awk -v s="$CURRENT_SCALE" 'BEGIN { printf "%.0f", s * 10 }')
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local scale=$1
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local width=$2
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local height=$3
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awk -v w="$width" -v h="$height" -v s="$scale" 'BEGIN {
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case "$CURRENT_INT" in
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logical_w = w / s
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10) NEW_SCALE=1.6 ;;
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logical_h = h / s
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16) NEW_SCALE=2 ;;
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rounded_w = int(logical_w + 0.5)
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20) NEW_SCALE=3 ;;
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rounded_h = int(logical_h + 0.5)
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*) NEW_SCALE=1 ;;
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diff_w = (logical_w - rounded_w) < 0 ? -(logical_w - rounded_w) : (logical_w - rounded_w)
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esac
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diff_h = (logical_h - rounded_h) < 0 ? -(logical_h - rounded_h) : (logical_h - rounded_h)
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if (diff_w < 0.0001 && diff_h < 0.0001) exit 0
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exit 1
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}'
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}
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# Function to find the nearest valid scale for a target
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find_nearest_valid_scale() {
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local target=$1
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local width=$2
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local height=$3
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# Round to nearest 1/120th (Hyprland's precision)
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awk -v t="$target" -v w="$width" -v h="$height" 'BEGIN {
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base = t * 120
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rounded = int(base + 0.5)
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scale_zero = rounded / 120
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# Test scale_zero first
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logical_w = w / scale_zero
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logical_h = h / scale_zero
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rnd_w = int(logical_w + 0.5)
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rnd_h = int(logical_h + 0.5)
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diff_w = (logical_w - rnd_w) < 0 ? -(logical_w - rnd_w) : (logical_w - rnd_w)
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diff_h = (logical_h - rnd_h) < 0 ? -(logical_h - rnd_h) : (logical_h - rnd_h)
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if (diff_w < 0.0001 && diff_h < 0.0001) {
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printf "%.6f\n", scale_zero
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exit 0
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}
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# Search outward
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for (i = 1; i <= 90; i++) {
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scale_up = (rounded + i) / 120
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scale_down = (rounded - i) / 120
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# Test scale_up
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logical_w = w / scale_up
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logical_h = h / scale_up
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rnd_w = int(logical_w + 0.5)
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rnd_h = int(logical_h + 0.5)
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diff_w = (logical_w - rnd_w) < 0 ? -(logical_w - rnd_w) : (logical_w - rnd_w)
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diff_h = (logical_h - rnd_h) < 0 ? -(logical_h - rnd_h) : (logical_h - rnd_h)
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if (diff_w < 0.0001 && diff_h < 0.0001) {
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printf "%.6f\n", scale_up
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exit 0
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}
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# Test scale_down (must be > 0.1)
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if (scale_down > 0.1) {
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logical_w = w / scale_down
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logical_h = h / scale_down
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rnd_w = int(logical_w + 0.5)
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rnd_h = int(logical_h + 0.5)
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diff_w = (logical_w - rnd_w) < 0 ? -(logical_w - rnd_w) : (logical_w - rnd_w)
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diff_h = (logical_h - rnd_h) < 0 ? -(logical_h - rnd_h) : (logical_h - rnd_h)
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if (diff_w < 0.0001 && diff_h < 0.0001) {
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printf "%.6f\n", scale_down
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exit 0
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}
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}
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}
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# Fallback
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printf "%.6f\n", scale_zero
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}'
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}
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# Define target scales and find their nearest valid equivalents
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TARGET_SCALE_1=$(find_nearest_valid_scale "1" "$PIXEL_WIDTH" "$PIXEL_HEIGHT")
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TARGET_SCALE_1_6=$(find_nearest_valid_scale "1.6" "$PIXEL_WIDTH" "$PIXEL_HEIGHT")
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TARGET_SCALE_2=$(find_nearest_valid_scale "2" "$PIXEL_WIDTH" "$PIXEL_HEIGHT")
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TARGET_SCALE_3=$(find_nearest_valid_scale "3" "$PIXEL_WIDTH" "$PIXEL_HEIGHT")
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# Convert to comparable integers (multiply by 100) to avoid floating point issues
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CURRENT_INT=$(echo "$CURRENT_SCALE" | awk '{printf "%.0f", $1 * 100}')
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SCALE_1_INT=$(echo "$TARGET_SCALE_1" | awk '{printf "%.0f", $1 * 100}')
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SCALE_1_6_INT=$(echo "$TARGET_SCALE_1_6" | awk '{printf "%.0f", $1 * 100}')
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SCALE_2_INT=$(echo "$TARGET_SCALE_2" | awk '{printf "%.0f", $1 * 100}')
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SCALE_3_INT=$(echo "$TARGET_SCALE_3" | awk '{printf "%.0f", $1 * 100}')
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# Determine next scale using integer comparison
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if [[ "$CURRENT_INT" -eq "$SCALE_1_INT" ]]; then
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NEW_SCALE="$TARGET_SCALE_1_6"
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elif [[ "$CURRENT_INT" -eq "$SCALE_1_6_INT" ]]; then
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NEW_SCALE="$TARGET_SCALE_2"
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elif [[ "$CURRENT_INT" -eq "$SCALE_2_INT" ]]; then
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NEW_SCALE="$TARGET_SCALE_3"
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elif [[ "$CURRENT_INT" -eq "$SCALE_3_INT" ]]; then
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NEW_SCALE="$TARGET_SCALE_1"
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else
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# Find closest target to determine where we are
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DIFF_1=$((CURRENT_INT - SCALE_1_INT))
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[[ $DIFF_1 -lt 0 ]] && DIFF_1=$((-DIFF_1))
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DIFF_1_6=$((CURRENT_INT - SCALE_1_6_INT))
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[[ $DIFF_1_6 -lt 0 ]] && DIFF_1_6=$((-DIFF_1_6))
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DIFF_2=$((CURRENT_INT - SCALE_2_INT))
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[[ $DIFF_2 -lt 0 ]] && DIFF_2=$((-DIFF_2))
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DIFF_3=$((CURRENT_INT - SCALE_3_INT))
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[[ $DIFF_3 -lt 0 ]] && DIFF_3=$((-DIFF_3))
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# Find minimum
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MIN=$DIFF_1
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CLOSEST="1"
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if [[ $DIFF_1_6 -lt $MIN ]]; then
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MIN=$DIFF_1_6
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CLOSEST="1.6"
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fi
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if [[ $DIFF_2 -lt $MIN ]]; then
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MIN=$DIFF_2
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CLOSEST="2"
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fi
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if [[ $DIFF_3 -lt $MIN ]]; then
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MIN=$DIFF_3
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CLOSEST="3"
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fi
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# Set next based on closest
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case "$CLOSEST" in
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"1") NEW_SCALE="$TARGET_SCALE_1_6" ;;
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"1.6") NEW_SCALE="$TARGET_SCALE_2" ;;
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"2") NEW_SCALE="$TARGET_SCALE_3" ;;
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"3") NEW_SCALE="$TARGET_SCALE_1" ;;
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esac
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fi
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# Apply the new scale to the active monitor only
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hyprctl keyword monitor "$ACTIVE_MONITOR,preferred,auto,$NEW_SCALE"
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hyprctl keyword monitor "$ACTIVE_MONITOR,preferred,auto,$NEW_SCALE"
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notify-send " Display scaling set to ${NEW_SCALE}x"
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# Format for display (remove trailing zeros)
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DISPLAY_SCALE=$(echo "$NEW_SCALE" | sed 's/0*$//;s/\.$//')
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# Notify the user
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notify-send " Display scaling set to ${DISPLAY_SCALE}x"
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