1. Datalogi A 6: 13/10

2. Java and swing Graphics programming: Windows with menus Buttons, textfields, scroll panels etc Animations, images, Events from mouse clicks, keyboard etc. Can be quite complicated…

3. EmptyFrame.java import javax.swing.JFrame; public class EmptyFrame{ public static void main(String args[]){ JFrame frame=new JFrame("EmptyFrame"); frame.setSize(600,600); frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE); frame.setVisible(true); }

4. EmptyFrame

5. Add a canvas to the window public static void main(String args[]){ JFrame frame=new JFrame(); frame.setSize(600,600); frame.setTitle("DrawShapes"); frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE); JCanvas canvas = new JCanvas(); frame.add(canvas); frame.setVisible(true);.. }

6. Coordinate system:

7. drawLine(135,230,335,370)

8. drawOval(135,230,200,140)

9. What to draw on a canvas: Line Oval/ellipsis Arcs (parts of an ellipsis Rectangles Curves, quadratic, qubic, bezier Images Text

10. The state when drawing: Current Font Current Stroke (width of lines) Current Paint (color of areas) Current Transform (scaling, rotation, deformation of drawings) Current Composite (new items can be made partially transparent Current clipping area. (limit the area in which you can draw)

11. setFont(new Font("Serif",Font.BOLD,150)); drawString("(GyÑ)",50,200);

12. Paint canvas.setPaint(Color.red); canvas.fillRect(50,50,100,100); canvas.setPaint(Color.blue); canvas.fillOval(250,50,100,100); canvas.setPaint(Color.green); canvas.fillArc(450,50,100,100,45,270); canvas.setPaint(new GradientPaint( 50,350,Color.red,450,350,Color.blue)); canvas.fillRect(50,300,500,100);

13. Paint

14. Java swing components Windows and components

15. Example

16. JLabel A bit of text and/or an icon new JLabel(”Label 1”,new IconImage(..))

17. JButton A button you can press. Text and/or an image (icon)

18. Radiobutton and checkbox Press to select or de-select

19. JTextField TextField: a line where you can enter text using the keyboard.

20. JTextArea TextArea: a multi-line area for entering text

21. JSlider A slider: select a value By dragging a knob

22. JSpinner Select a value by stepping through a bounded range of values

23. JComboBox Select a value from a drop-down list

24. JList Select an a value or an interval of values from a list

25. Horizontal boxes and glue JBox.hbox(…)

26. Vertical box JBox.vbox(..)

27. Split pane, scroll pane

28. Borders Examples:

29. Making borders t1.setBorder(BorderFactory. createBevelBorder(BevelBorder.RAISED)); t2.setBorder(BorderFactory. createEtchedBorder()); t3.setBorder(BorderFactory. createMatteBorder(2,5,2,5,Color.red)); t4.setBorder(BorderFactory. createTitledBorder("My Title")); b1.setBorder(BorderFactory. createLineBorder(Color.blue,4));

30. Next time: events How to get information about user input.