Merge pull request #7134 from Evorage0/main

Added window size check upon p5 instantiation

src/core/environment.js

@@ -675,7 +675,7 @@ p5.prototype.displayHeight = screen.height;
  * @alt
  * This example does not render anything.
  */
-p5.prototype.windowWidth = getWindowWidth();
+p5.prototype.windowWidth = 0;
 
 /**
  * A `Number` variable that stores the height of the browser's viewport.
@@ -703,7 +703,7 @@ p5.prototype.windowWidth = getWindowWidth();
  * @alt
  * This example does not render anything.
  */
-p5.prototype.windowHeight = getWindowHeight();
+p5.prototype.windowHeight = 0;
 
 /**
  * A function that's called when the browser window is resized.
@@ -800,6 +800,15 @@ function getWindowHeight() {
   );
 }
 
+/**
+ * Called upon each p5 instantiation instead of module import due to the
+ * possibility of the window being resized when no sketch is active.
+ */
+p5.prototype._updateWindowSize = function() {
+  this._setProperty('windowWidth', getWindowWidth());
+  this._setProperty('windowHeight', getWindowHeight());
+};
+
 /**
  * A `Number` variable that stores the width of the canvas in pixels.
  *

src/core/main.js

@@ -658,6 +658,9 @@ class p5 {
       }
     };
 
+    // ensure correct reporting of window dimensions
+    this._updateWindowSize();
+
     // call any registered init functions
     this._registeredMethods.init.forEach(function(f) {
       if (typeof f !== 'undefined') {