added "new costume" primitive reporter to "looks" category

HISTORY.md

@@ -2,7 +2,8 @@
 
 ## in development:
 * **New Features:**
-    * added selectors for sprites' and the stage's bounding box (left, right, top, bottom) to MY dropdown
+    * new primitive in "looks": NEW COSTUME from a list of pixels and dimensions, allowing CURRENT
+    * added selectors for sprites' and the stage's bounding box (LEFT, RIGHT, TOP, BOTTOM) to MY dropdown
 * **Notable Changes:**
     * running STOP ALL now also toggles (pauses and resumes) all generic WHEN hat blocks (just like pressing the stop button)
 * **Notable Fixes:**
@@ -14,6 +15,7 @@
 ### 2019-10-18
 * objects, blocks, threads: added dimension getters for the stage
 * German translation update (left, right, top, bottom selectors in MY)
+* blocks, objects, threads: added "new costume" primitive reporter to "looks" category
 
 ### 2019-10-17
 * objects, blocks, threads: added selectors for sprites' bounding box (left, right, top, bottom) to MY dropdown

snap.html

@@ -6,8 +6,8 @@
         <link rel="shortcut icon" href="src/favicon.ico">
         <script type="text/javascript" src="src/morphic.js?version=2019-10-16"></script>
         <script type="text/javascript" src="src/widgets.js?version=2019-10-16"></script>
-        <script type="text/javascript" src="src/blocks.js?version=2019-10-17"></script>
-        <script type="text/javascript" src="src/threads.js?version=2019-10-17"></script>
+        <script type="text/javascript" src="src/blocks.js?version=2019-10-18"></script>
+        <script type="text/javascript" src="src/threads.js?version=2019-10-18"></script>
         <script type="text/javascript" src="src/objects.js?version=2019-10-18"></script>
         <script type="text/javascript" src="src/gui.js?version=2019-10-16"></script>
         <script type="text/javascript" src="src/paint.js?version=2019-06-27"></script>

src/blocks.js

@@ -148,7 +148,7 @@ CustomCommandBlockMorph, SymbolMorph, ToggleButtonMorph, DialMorph*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.blocks = '2019-October-17';
+modules.blocks = '2019-October-18';
 
 var SyntaxElementMorph;
 var BlockMorph;
@@ -1139,6 +1139,16 @@ SyntaxElementMorph.prototype.labelPart = function (spec) {
             );
             part.setContents(1);
             break;
+        case '%dim':
+            part = new InputSlotMorph(
+                null,
+                true,
+                {
+                    current : ['current']
+                }
+            );
+            // part.setContents( ['current']);
+            break;
         case '%rel':
             part = new InputSlotMorph(
                 null, // text
@@ -2372,6 +2382,7 @@ SyntaxElementMorph.prototype.endLayout = function () {
     %inst   - white roundish type-in slot with drop-down for instruments
     %ida    - white roundish type-in slot with drop-down for list indices
     %idx    - white roundish type-in slot for indices incl. "any"
+    %dim    - white roundish type-in slot for dimensinos incl. "current"
     %obj    - specially drawn slot for object reporters
     %rel    - chameleon colored rectangular drop-down for relation options
     %spr    - chameleon colored rectangular drop-down for object-names

src/objects.js

@@ -312,6 +312,11 @@ SpriteMorph.prototype.initBlocks = function () {
             spec: '%img of costume %cst',
             defaults: [['width']]
         },
+        reportNewCostume: {
+            type: 'reporter',
+            category: 'looks',
+            spec: 'new costume %l width: %dim height: %dim'
+        },
         reportNewCostumeStretched: {
             type: 'reporter',
             category: 'looks',
@@ -2210,6 +2215,7 @@ SpriteMorph.prototype.blockTemplates = function (category) {
         blocks.push(block('doThink'));
         blocks.push('-');
         blocks.push(block('reportGetImageAttribute'));
+        blocks.push(block('reportNewCostume'));
         blocks.push(block('reportNewCostumeStretched'));
         blocks.push('-');
         blocks.push(block('changeEffect'));
@@ -8268,6 +8274,7 @@ StageMorph.prototype.blockTemplates = function (category) {
         blocks.push(block('getCostumeIdx'));
         blocks.push('-');
         blocks.push(block('reportGetImageAttribute'));
+        blocks.push(block('reportNewCostume'));
         blocks.push(block('reportNewCostumeStretched'));
         blocks.push('-');
         blocks.push(block('changeEffect'));

src/threads.js

@@ -61,7 +61,7 @@ StageMorph, SpriteMorph, StagePrompterMorph, Note, modules, isString, copy,
 isNil, WatcherMorph, List, ListWatcherMorph, alert, console, TableMorph, Color,
 TableFrameMorph, ColorSlotMorph, isSnapObject, Map, newCanvas, Symbol*/
 
-modules.threads = '2019-October-17';
+modules.threads = '2019-October-18';
 
 var ThreadManager;
 var Process;
@@ -4915,11 +4915,6 @@ Process.prototype.reportGetImageAttribute = function (choice, name) {
 
 Process.prototype.reportNewCostumeStretched = function (name, xP, yP) {
     var cst;
-    if (!isFinite(+xP * +yP) || isNaN(+xP * +yP)) {
-        throw new Error(
-            'expecting a finite number\nbut getting Infinity or NaN'
-        );
-    }
     if (name instanceof List) {
         return this.reportNewCostume(name, xP, yP);
     }
@@ -4927,6 +4922,11 @@ Process.prototype.reportNewCostumeStretched = function (name, xP, yP) {
     if (!cst) {
         return new Costume();
     }
+    if (!isFinite(+xP * +yP) || isNaN(+xP * +yP)) {
+        throw new Error(
+            'expecting a finite number\nbut getting Infinity or NaN'
+        );
+    }
     return cst.stretched(
         Math.round(cst.width() * +xP / 100),
         Math.round(cst.height() * +yP / 100)
@@ -4951,16 +4951,29 @@ Process.prototype.costumeNamed = function (name) {
 };
 
 Process.prototype.reportNewCostume = function (pixels, width, height, name) {
-    // private
+    var rcvr = this.blockReceiver(),
+        stage = rcvr.parentThatIsA(StageMorph),
+        canvas, ctx, src, dta, i, k, px;
+
+    this.assertType(pixels, 'list');
+    if (this.inputOption(width) === 'current') {
+        width = rcvr.costume ? rcvr.costume.width() : stage.dimensions.x;
+    }
+    if (this.inputOption(height) === 'current') {
+        height = rcvr.costume ? rcvr.costume.height() : stage.dimensions.y;
+    }
     width = Math.abs(Math.floor(+width));
     height = Math.abs(Math.floor(+height));
+    if (!isFinite(width * height) || isNaN(width * height)) {
+       throw new Error(
+           'expecting a finite number\nbut getting Infinity or NaN'
+       );
+    }
 
-    var canvas = newCanvas(new Point(width, height), true),
-        ctx = canvas.getContext('2d'),
-        src = pixels.asArray(),
-        dta = ctx.createImageData(width, height),
-        i, k, px;
-
+    canvas = newCanvas(new Point(width, height), true);
+    ctx = canvas.getContext('2d');
+    src = pixels.asArray();
+    dta = ctx.createImageData(width, height);
     for (i = 0; i < src.length; i += 1) {
         px = src[i].asArray();
         for (k = 0; k < 4; k += 1) {
@@ -4970,7 +4983,7 @@ Process.prototype.reportNewCostume = function (pixels, width, height, name) {
     ctx.putImageData(dta, 0, 0);
     return new Costume(
         canvas,
-        name || this.blockReceiver().newCostumeName(localize('snap'))
+        name || rcvr.newCostumeName(localize('snap'))
     );
 };