Make compatible with Hex Token Size Support (resolves #12)

CHANGELOG.md

@@ -1,3 +1,7 @@
+## In development
+### Compatiblity
+- Drag Ruler is now compatible with Hex Token Size Support. For compatibility Hex Token Size Support Version 0.5.4 or higher is required. Thanks to Ourobor for helping making this possible.
+
 ## 1.2.0
 ### New features
 - Right click and spacebar can now be swapped, allowing to place waypoints with right click and removing them with spacebar

src/compatibility.js

@@ -0,0 +1,19 @@
+export function getHexSizeSupportTokenGridCenter(token) {
+	const tokenCenterOffset = CONFIG.hexSizeSupport.getCenterOffset(token)
+	const tokenCenter = {x: token.x + tokenCenterOffset.x, y: token.y + tokenCenterOffset.y}
+	if (token.getFlag("hex-size-support", "borderSize") % 2 === 1)
+		return tokenCenter
+	if (canvas.grid.grid.columns) {
+		let hexOffset = canvas.grid.w / 2
+		if (!CONFIG.hexSizeSupport.getAltOrientationFlag(token))
+			hexOffset *= -1
+		tokenCenter.x += hexOffset
+	}
+	else {
+		let hexOffset = canvas.grid.h / 2
+		if (CONFIG.hexSizeSupport.getAltOrientationFlag(token))
+			hexOffset *= -1
+		tokenCenter.y += hexOffset
+	}
+	return tokenCenter
+}

src/main.js

@@ -1,6 +1,7 @@
 "use strict"
 
 import {availableSpeedProviders, currentSpeedProvider, registerModule, registerSystem, setCurrentSpeedProvider} from "./api.js"
+import {getHexSizeSupportTokenGridCenter} from "./compatibility.js"
 import {measure, moveTokens, onMouseMove} from "./foundry_imports.js"
 import {registerSettings, settingsKey} from "./settings.js"
 
@@ -143,7 +144,11 @@ function onKeyShift(up) {
 function onTokenLeftDragStart(event) {
 	const ruler = canvas.controls.ruler
 	ruler.draggedToken = this
-	const tokenCenter = {x: this.x + canvas.grid.grid.w / 2, y: this.y + canvas.grid.grid.h / 2}
+	let tokenCenter
+	if (canvas.grid.isHex && game.modules.get("hex-size-support")?.active && CONFIG.hexSizeSupport.getAltSnappingFlag(this))
+		tokenCenter = getHexSizeSupportTokenGridCenter(this)
+	else
+		tokenCenter = {x: this.x + canvas.grid.grid.w / 2, y: this.y + canvas.grid.grid.h / 2}
 	ruler.clear();
 	ruler._state = Ruler.STATES.STARTING;
 	ruler.rulerOffset = {x: tokenCenter.x - event.data.origin.x, y: tokenCenter.y - event.data.origin.y}