upgrading to latest common packages (#383)

libs/base/pxt.json

@@ -16,6 +16,7 @@
         "ns.ts",
         "control.cpp",
         "control.ts",
+        "eventcontext.ts",
         "serial.cpp",
         "serial.ts",
         "fieldeditors.ts"

libs/base/shims.d.ts

@@ -102,14 +102,10 @@ declare namespace control {
     function millis(): int32;
 
     /**
-     * Run code when a registered event happens.
-     * @param id the event compoent id
-     * @param value the event value to match
+     * Used internally
      */
-    //% weight=20 blockGap=8 blockId="control_on_event" block="on event|from %src|with value %value"
-    //% blockExternalInputs=1
-    //% help="control/on-event" flags.defl=16 shim=control::onEvent
-    function onEvent(src: int32, value: int32, handler: () => void, flags?: int32): void;
+    //% flags.defl=16 shim=control::internalOnEvent
+    function internalOnEvent(src: int32, value: int32, handler: () => void, flags?: int32): void;
 
     /**
      * Reset the device.

libs/screen/shims.d.ts

@@ -23,14 +23,14 @@ declare interface Image {
     /**
      * Set pixel color
      */
-    //% shim=ImageMethods::set
-    set(x: int32, y: int32, c: int32): void;
+    //% shim=ImageMethods::setPixel
+    setPixel(x: int32, y: int32, c: int32): void;
 
     /**
      * Get a pixel color
      */
-    //% shim=ImageMethods::get
-    get(x: int32, y: int32): int32;
+    //% shim=ImageMethods::getPixel
+    getPixel(x: int32, y: int32): int32;
 
     /**
      * Fill entire image with a given color

libs/screen/targetoverrides.ts

@@ -5,7 +5,7 @@
 //% groups=["0.,","1#*"]
 function img(lits: any, ...args: any[]): Image { return null }
 
-let screen = image.create(DAL.LCD_WIDTH, DAL.LCD_HEIGHT)
+const screen = image.create(DAL.LCD_WIDTH, DAL.LCD_HEIGHT)
 
 namespace _screen_internal {
     //% shim=pxt::updateScreen
@@ -13,10 +13,9 @@ namespace _screen_internal {
     //% shim=pxt::updateStats
     function updateStats(msg: string): void { }
 
-    control.setupScreenRefresh(() => updateScreen(screen))
-
-    export function _stats(msg: string) {
-        updateStats(msg)
+    control.__screen.setupUpdate(() => updateScreen(screen))
+    control.EventContext.onStats = function(msg: string) { 
+        updateStats(msg);
     }
 }
 

package.json

@@ -45,7 +45,7 @@
     "webfonts-generator": "^0.4.0"
   },
   "dependencies": {
-    "pxt-common-packages": "0.20.14",
+    "pxt-common-packages": "0.20.28",
     "pxt-core": "3.5.11"
   },
   "scripts": {