shallow permanent shadows for dialog box widgets

src/morphic.js

@@ -68,6 +68,7 @@
 
      * keyboard navigation can be activated for any visible menu by pressing an arbitrary key
 
+    * new "noDropShadow" property for Morphs that already have built-in shadows (Menus, SpeechBubbles)
 
     documentation contents
     ----------------------
@@ -1176,7 +1177,7 @@
 
 /*global window, HTMLCanvasElement, FileReader, Audio, FileList, Map*/
 
-var morphicVersion = '2020-February-18';
+var morphicVersion = '2020-February-20';
 var modules = {}; // keep track of additional loaded modules
 var useBlurredShadows = getBlurredShadowSupport(); // check for Chrome-bug
 
@@ -3060,6 +3061,7 @@ Morph.prototype.init = function () {
     this.isTemplate = false;
     this.acceptsDrops = false;
     this.isFreeForm = false;
+    this.noDropShadow = false;
     this.fps = 0;
     this.customContextMenu = null;
     this.lastTime = Date.now();
@@ -5974,6 +5976,7 @@ SpeechBubbleMorph.prototype.init = function (
         border || ((border === 0) ? 0 : 1),
         borderColor || new Color(140, 140, 140)
     );
+    this.noDropShadow = true;
     this.color = color || new Color(230, 230, 230);
     this.fixLayout();
 };
@@ -7820,6 +7823,7 @@ MenuMorph.prototype.init = function (target, title, environment, fontSize) {
 
     // override inherited properties:
     this.isDraggable = false;
+    this.noDropShadow = true;
 
     // immutable properties:
     this.border = null;
@@ -11039,7 +11043,7 @@ HandMorph.prototype.grab = function (aMorph) {
     if (this.children.length === 0) {
         this.world.stopEditing();
         this.grabOrigin = aMorph.situation();
-        if (!(aMorph instanceof MenuMorph)) {
+        if (!aMorph.noDropShadow) {
             aMorph.addShadow();
         }
         if (aMorph.prepareToBeGrabbed) {
@@ -11062,7 +11066,7 @@ HandMorph.prototype.drop = function () {
         this.changed();
         target.add(morphToDrop);
         morphToDrop.changed();
-        if (!(morphToDrop instanceof MenuMorph)) {
+        if (!morphToDrop.noDropShadow) {
 	        morphToDrop.removeShadow();
         }
         this.children = [];

src/widgets.js

@@ -1521,6 +1521,7 @@ DialogBoxMorph.prototype.init = function (target, action, environment) {
 
     // override inherited properites:
     this.isDraggable = true;
+    this.noDropShadow = true;
     this.color = PushButtonMorph.prototype.color;
     this.createLabel();
     this.createButtons();
@@ -2465,8 +2466,8 @@ DialogBoxMorph.prototype.addBody = function (aMorph) {
 
 // DialogBoxMorph layout
 
-DialogBoxMorph.prototype.addShadow = function () {nop(); };
-DialogBoxMorph.prototype.removeShadow = function () {nop(); };
+// +++ DialogBoxMorph.prototype.addShadow = function () {nop(); };
+// +++ DialogBoxMorph.prototype.removeShadow = function () {nop(); };
 
 DialogBoxMorph.prototype.fixLayout = function () {
     // determine by extent and arrange my components
@@ -2544,6 +2545,11 @@ DialogBoxMorph.prototype.fixLayout = function () {
         this.buttons.setCenter(this.center());
         this.buttons.setBottom(this.bottom() - this.padding);
     }
+
+    // refresh a shallow shadow
+    this.removeShadow();
+    this.addShadow(new Point(2, 2), 80);
+
 };
 
 // DialogBoxMorph shadow
@@ -2553,6 +2559,7 @@ DialogBoxMorph.prototype.fixLayout = function () {
     conflicted by the scrolling scripts pane
 */
 
+/*
 DialogBoxMorph.prototype.shadowImage = function (off, color) {
     // flat mode
     var fb, img, outline, sha, ctx,
@@ -2607,6 +2614,7 @@ DialogBoxMorph.prototype.shadowImageBlurred = function (off, color) {
     );
     return sha;
 };
+*/
 
 // DialogBoxMorph keyboard events