fix: full support for LinearGradient

Author: farfromrefug

src/canvas.android.ts

@@ -441,7 +441,21 @@ export class LinearGradient {
         return this._native;
     }
     constructor(param0: number, param1: number, param2: number, param3: any, param4: any, param5: any, param6: any) {
-        this._native = new android.graphics.LinearGradient(param0, param1, param2, param3, createColorParam(param4), param5 instanceof Array ? param5 : createColorParam(param5), param6);
+        if (Array.isArray(param4)) {
+            const testArray = Array.create('int', param4.length);
+            param4.forEach((c, i) => (testArray[i] = createColorParam(c)));
+            param4 = testArray;
+        } else if (param4.hasOwnProperty('length')) {
+            param4 = createColorParam(param4);
+        }
+        if (Array.isArray(param5)) {
+            const testArray = Array.create('float', param4.length);
+            param5.forEach((c, i) => (testArray[i] = c));
+            param5 = testArray;
+        } else if (param5.hasOwnProperty('length')) {
+            param5 = createColorParam(param5);
+        }
+        this._native = new android.graphics.LinearGradient(param0, param1, param2, param3, param4, param5, param6);
         return new Proxy(this, this);
     }
     get(target, name, receiver) {

src/canvas.ios.ts

@@ -2120,8 +2120,15 @@ export class LinearGradient {
     get gradient() {
         if (!this._gradient) {
             if (Array.isArray(this.colors)) {
+                let stopsRef = null;
+                if (this.stops) {
+                    const CGFloatArray = interop.sizeof(interop.types.id) === 4 ? Float32Array : Float64Array;
+                    const buffer = CGFloatArray.from(this.stops);
+                    stopsRef = buffer;
+                }
+
                 const cgColors = this.colors.map((c) => (c instanceof Color ? c : new Color(c)).ios.CGColor);
-                this._gradient = CGGradientCreateWithColors(CGColorSpaceCreateDeviceRGB(), cgColors as any, this.stops);
+                this._gradient = CGGradientCreateWithColors(CGColorSpaceCreateDeviceRGB(), cgColors as any, stopsRef);
                 CFRetain(this._gradient);
             } else {
                 const cgColors = [this.colors, this.stops].map((c) => (c instanceof Color ? c : new Color(c)).ios.CGColor);