UI Tracker initial

GitOrigin-RevId: ee04e511ebff2bd5438fdbc41ff5de4543f1ad5a

platform/platform-impl/src/com/intellij/ide/IdeEventQueue.java

@@ -219,6 +219,7 @@ public final class IdeEventQueue extends EventQueue {
       addDispatcher(new WindowsUpMaximizer(), null);
     }
     addDispatcher(new EditingCanceller(), null);
+    //addDispatcher(new UIMouseTracker(), null);
 
     abracadabraDaberBoreh();
 

platform/platform-impl/src/com/intellij/ide/UIMouseTracker.kt

@@ -0,0 +1,62 @@
+// Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+package com.intellij.ide
+
+import com.intellij.openapi.ui.DialogWrapper
+import com.intellij.openapi.wm.impl.IdeGlassPaneImpl
+import java.awt.*
+import java.awt.event.MouseEvent
+import javax.swing.SwingUtilities
+import kotlin.math.sqrt
+
+/**
+ * @author Konstantin Bulenkov
+ */
+class UIMouseTracker : IdeEventQueue.EventDispatcher {
+  var mouseCoordinates = MouseInfo.getPointerInfo().location ?: Point(0,0)
+  var totalMouseTrack = 0f
+
+  override fun dispatch(e: AWTEvent): Boolean {
+    if (e is MouseEvent) {
+      when (e.id) {
+        MouseEvent.MOUSE_RELEASED -> onMouseClicked(e)
+        MouseEvent.MOUSE_MOVED -> onMouseMove(e)
+      }
+    }
+
+    return false
+  }
+
+  private fun onMouseMove(e: MouseEvent) {
+    val dX = (e.xOnScreen - mouseCoordinates.x).toFloat()
+    val dY = (e.yOnScreen - mouseCoordinates.y).toFloat()
+    mouseCoordinates.x = e.xOnScreen
+    mouseCoordinates.y = e.yOnScreen
+    totalMouseTrack += sqrt(dX*dX + dY*dY)
+  }
+
+  private fun onMouseClicked(e: MouseEvent) {
+    if (e.clickCount == 0) return
+
+    val component = e.component
+    val clickedComponent = if (component is Container) component.findComponentAt(e.point) else null
+
+    if (clickedComponent != null) {
+      if (clickedComponent is IdeGlassPaneImpl) {
+        val dialog = DialogWrapper.findInstance(clickedComponent)
+        if (dialog != null) {
+          val pointOnDialog = SwingUtilities.convertPoint(e.component, e.point, dialog.contentPane)
+          val comp = dialog.contentPane.findComponentAt(pointOnDialog.x, pointOnDialog.y)
+          if (comp != null) {
+            componentClicked(comp)
+          }
+        }
+      } else {
+        componentClicked(clickedComponent)
+      }
+    }
+  }
+
+  private fun componentClicked(comp: Component) {
+    //todo[kb] API with UI components to report stats
+  }
+}