update info about dpi event if we came from `frameDispatcher` (#620)

* update info about dpi-scale also on hardware layer paint

* `checkContentScale` on both of paints and on `update`

do not try to sync size if scale don't changed because it acquires draw lock

* remove misleading comment

skiko/src/awtMain/kotlin/org/jetbrains/skiko/SkiaLayer.awt.kt

@@ -83,6 +83,7 @@ actual open class SkiaLayer internal constructor(
                 //    For example, on macOs when we resize window or change DPI
                 //
                 // 3. to avoid double paint in one single frame, use needRedraw instead of redrawImmediately
+                this@SkiaLayer.checkContentScale()
                 redrawer?.needRedraw()
             }
 
@@ -351,11 +352,7 @@ actual open class SkiaLayer internal constructor(
 
     override fun paint(g: java.awt.Graphics) {
         super.paint(g)
-        if (backedLayer.checkContentScale()) {
-            notifyChange(PropertyKind.ContentScale)
-        }
-        redrawer?.syncSize() // setBounds not always called (for example when we change density on Linux
-
+        checkContentScale()
         // `paint` can be called when we already inside `draw` method.
         //
         // For example if we call some AWT function inside renderer.onRender,
@@ -369,6 +366,17 @@ actual open class SkiaLayer internal constructor(
         }
     }
 
+    /*
+    In AWT there is no a change DPI event; so we should call this function when we expect that DPI maybe changed
+    We hope that call it on AWT/SWING `paint` and our update is enough
+     */
+    private fun checkContentScale() {
+        if (backedLayer.checkContentScale()) {
+            notifyChange(PropertyKind.ContentScale)
+            redrawer?.syncSize()
+        }
+    }
+
     // We need to delegate all event listeners to the Canvas (so and focus/input)
     // Canvas is heavyweight AWT component, JPanel is lightweight Swing component
     // Event handling doesn't properly work when we mix heavyweight and lightweight components.
@@ -494,6 +502,8 @@ actual open class SkiaLayer internal constructor(
         check(isEventDispatchThread()) { "Method should be called from AWT event dispatch thread" }
         check(!isDisposed) { "SkiaLayer is disposed" }
 
+        checkContentScale()
+
         FrameWatcher.nextFrame()
         fpsCounter?.tick()