A B C D G I L M O P R S

A

actionPerformed(ActionEvent) - Method in class DrawingBoard

on the button click: if shape button is pressed, set the shape to be drawn if clear button is pressed, remove objects from vector and repaint if undo button is pressed, remove last odject from vector and repaint

B

b_circle - Variable in class DrawingBoard

declair window controls

b_clear - Variable in class DrawingBoard

declair window controls

b_line - Variable in class DrawingBoard

declair window controls

b_polygon - Variable in class DrawingBoard

declair window controls

b_rectangle - Variable in class DrawingBoard

declair window controls

b_undo - Variable in class DrawingBoard

declair window controls

C

checkbox_filled - Variable in class DrawingBoard

choice_back_color - Variable in class DrawingBoard

choice_shape_color - Variable in class DrawingBoard

controls1 - Variable in class DrawingBoard

controls2 - Variable in class DrawingBoard

currentShape - Variable in class DrawingBoard

declare variable to hold the current shape, initialize to oval

D

DrawCircle - class DrawCircle.

Extends Abstract class DrawObj, used for drawing triangle

DrawCircle(int, int, int, int, boolean, Color) - Constructor for class DrawCircle

call constructor of the parent class DrawObj

DrawingBoard - class DrawingBoard.

Drawing Board with controls allows to draw oval, rectangle, line and triangle extends Applet implements ActionListener for button controls, implements ItemListener for choice boxes, implements MouseMotionListener for rubber band drawing implements MouseListener for finishing the drawing

DrawingBoard() - Constructor for class DrawingBoard

DrawLine - class DrawLine.

Extends Abstract class DrawObj, used for drawing rectangle

DrawLine(int, int, int, int, boolean, Color) - Constructor for class DrawLine

call constructor of the parent class DrawObj

DrawObj - class DrawObj.

abstract class from which all shapes will be descendants

DrawObj(int, int, int, int, boolean, Color) - Constructor for class DrawObj

contructor used for circle, rectangle and line

DrawObj(Point, Point, Point, boolean, Color) - Constructor for class DrawObj

contructor used for polygon

DrawPolygon - class DrawPolygon.

Extends Abstract class DrawObj, used for drawing triangle

DrawPolygon(Point, Point, Point, boolean, Color) - Constructor for class DrawPolygon

call constructor of the parent class DrawObj

DrawRect - class DrawRect.

Extends Abstract class DrawObj, used for drawing rectangle

DrawRect(int, int, int, int, boolean, Color) - Constructor for class DrawRect

call constructor of the parent class DrawObj

drawRubberBand(int, int, int, int) - Method in class DrawingBoard

draw the rubberband shape, by first erasing the previous, as mouse is dragged, then save the last points for the redraw on the next pass

drawShape(Graphics) - Method in class DrawObj

method to be overridden by descendants

drawShape(Graphics) - Method in class DrawCircle

drawShape(Graphics) - Method in class DrawRect

drawShape(Graphics) - Method in class DrawLine

drawShape(Graphics) - Method in class DrawPolygon

G

getColor() - Method in class DrawObj

getting color of the object to be drawn

I

init() - Method in class DrawingBoard

initialization sets up the screen and controls

itemStateChanged(ItemEvent) - Method in class DrawingBoard

this is used to change background color from the choice_back_color box

L

LINE - Static variable in class DrawingBoard

M

mouseClicked(MouseEvent) - Method in class DrawingBoard

When drawing a triangle and mouse is clicked, use the saved points to call the drawShape method for the triangle.

mouseDragged(MouseEvent) - Method in class DrawingBoard

when mouse is dragged: if drawing a triangle and mouse has been released before, call mouseMove event logic; set the coordinates and call drawRubberBand

mouseEntered(MouseEvent) - Method in class DrawingBoard

displays a message on the status bar

mouseExited(MouseEvent) - Method in class DrawingBoard

since event handling is implemented directly, have to implement all

mouseMoved(MouseEvent) - Method in class DrawingBoard

draw the rubberband shape for the triangle, by first erasing the previous, as mouse moves, then save the previous points for the redraw on the next pass

mousePressed(MouseEvent) - Method in class DrawingBoard

assign coordinates of initial point of the shape

mouseReleased(MouseEvent) - Method in class DrawingBoard

When mouse is released, use the final point to call the drawShape method for the selected shape.

O

OVAL - Static variable in class DrawingBoard

assign constants to be used in a switch statement that will determine the shape

P

paint(Graphics) - Method in class DrawingBoard

paintMethod - tell all shape objects in the Vector to repaint themselves.

POLYGON - Static variable in class DrawingBoard

R

RECTANGLE - Static variable in class DrawingBoard

S

shapeObjects - Variable in class DrawingBoard

create Vector object to hold the shape objects for repainting purposes

A B C D G I L M O P R S