From a728f7e878f083ea0254b2b2bed80668a6d8557e Mon Sep 17 00:00:00 2001
From: Anton Tarasov <anton.tarasov@jetbrains.com>
Date: Fri, 7 Apr 2017 18:38:29 +0300
Subject: [PATCH] IDEA-171160 [macos] progress indicator in AppIcon consumes
 CPU

---
 platform/platform-impl/src/com/intellij/ui/AppIcon.java | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/platform/platform-impl/src/com/intellij/ui/AppIcon.java b/platform/platform-impl/src/com/intellij/ui/AppIcon.java
index 8f2c55088eb9..d80edacb8662 100644
--- a/platform/platform-impl/src/com/intellij/ui/AppIcon.java
+++ b/platform/platform-impl/src/com/intellij/ui/AppIcon.java
@@ -27,6 +27,7 @@ import com.intellij.openapi.wm.AppIconScheme;
 import com.intellij.openapi.wm.IdeFrame;
 import com.intellij.openapi.wm.WindowManager;
 import com.intellij.util.IconUtil;
+import com.intellij.util.containers.HashMap;
 import com.intellij.util.ui.ImageUtil;
 import com.intellij.util.ui.UIUtil;
 import org.apache.sanselan.ImageWriteException;
@@ -46,6 +47,7 @@ import java.io.IOException;
 import java.io.OutputStream;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
+import java.util.Map;
 
 public abstract class AppIcon {
   private static final Logger LOG = Logger.getInstance(AppIcon.class);
@@ -165,6 +167,7 @@ public abstract class AppIcon {
   @SuppressWarnings("UseJBColor")
   private static class MacAppIcon extends BaseIcon {
     private BufferedImage myAppImage;
+    private Map<Object, AppImage> myProgressImagesCache = new HashMap<>();
 
     private BufferedImage getAppImage() {
       assertIsDispatchThread();
@@ -240,6 +243,7 @@ public abstract class AppIcon {
       if (myCurrentProcessId != null && !myCurrentProcessId.equals(processId)) return false;
 
       setDockIcon(getAppImage());
+      myProgressImagesCache.remove(myCurrentProcessId);
       myCurrentProcessId = null;
       myLastValue = 0;
 
@@ -308,7 +312,8 @@ public abstract class AppIcon {
 
         progressArea.intersect(borderArea);
 
-        AppImage appImg = createAppImage();
+        AppImage appImg = myProgressImagesCache.get(myCurrentProcessId);
+        if (appImg == null) myProgressImagesCache.put(myCurrentProcessId, appImg = createAppImage());
 
         appImg.myG2d.setColor(PROGRESS_BACKGROUND_COLOR);
         appImg.myG2d.fill(backgroundArea);