Prevent mouse events from being captured by a live sketch when the cursor is not hovering it

Current behavior
Mouse clicks register in interactive sketches even when the cursor is not over the sketch window (like clicking on links anywhere in the page). This is particularly problematic in examples like FileIO/SaveOneImage where any click triggers a file save.

Expected behavior
Mouse clicks only register when the cursor is over the sketch window

Possible solution
Embed the sketches into an iFrame. See @trikaphundo's first comment below

The following examples are using MousePressed to capture clicks and may need to be fixed

• Camera/Orthographic
• Input/MouseFunctions
• Structure/Loop
• Structure/Redraw
• Web/EmbeddedLinks
• Avanced Data/ArrayListClass
• Advanced Data/LoadSaveJSON
• Advanced Data/LoadSaveTable
• Cellular Automata/Wolfram
• FileIO/SaveOneImage
• GUI/Button
• Motion/MovingOnCurves
• Simulate/Flocking
• Simulate/ForcesWithVectors
• Simulate/MultipleParticleSystems

首先定位嵌入实时 sketch 的代码，并通过点击 sketch 窗口外部来复现该问题，尤其要使用 FileIO/SaveOneImage。完成的标准是：只有当光标位于 sketch 上方时才会注册鼠标点击，包括所列出的受影响示例。