Lab Report #9: Mouse Events in JavaFX, Study Guides, Projects, Research of Object Oriented Programming

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LAB REPORT:

SUBJECT Images

SUBMITTED BY: SAMIA

REG. NO: 17JZBCS

DEPARTMENT: CS&IT

TITLE: Mouse events

Exercise 1:

• In BlueJ, create a new project called Lab9 with a class called Scribbler
• Add all the necessary scaffolding code to make it a JavaFX applicaFon, imporFng the necessary classes.
• Create an empty Group and add it to a Scene.
• Set the scene size to 770 x 500 and the fill color of the scene to black.
• Declare the Group and Scene variables at the class level because they will later be used in other methods.
• Run your program to view the empty scene. SOLUTION:

Exercise 2:

• Download the image sunset.jpg from our Canvas site (under Files > lab files )
• Move the image to the lab project folder.
• In the start method, create an Image object with that file.
• Then create an ImageView object for that image. Declare the ImageView variable at the class level.
• Set both the x and y posiFon of the image view (its upper leU corner) to 70.
• Add the image view to the root group. SOLUTION:

Exercise 3:

• Create a method called addDot to serve as a MouseEvent handler.
• In the addDot method, create a Circle centered where the mouse was pressed, with a radius of 3 pixels.
• Add the circle to the (children of the) root group.
• In the start method, set up the ImageView to call that event handler

Exercise 6:

• Now add a method called rollOn to handle a MouseEvent whenever the mouse enters (rolls onto) the image.
• When this happens, change the fill color of the scene to CYAN. SOLUTION: OUTPUT: