javabook
Class DrawingBoard

java.lang.Object
  java.awt.Component
      java.awt.Container
          java.awt.Window
              java.awt.Frame
                  javax.swing.JFrame
                      javabook.MainWindow
                          javabook.DrawingBoard

All Implemented Interfaces:

javax.accessibility.Accessible, java.awt.image.ImageObserver, java.awt.MenuContainer, javax.swing.RootPaneContainer, java.io.Serializable, javax.swing.WindowConstants

public class DrawingBoard

extends MainWindow

This class allows the drawing of lines, circles, and rectangles in the programmer designated color.

This class is provided as freeware. You are free to use as provided or modify to your heart's content. But you use it at your own risk. No implied or explicit warranty is given.

See Also:

Graphics, Serialized Form

Field Summary

Fields inherited from class javax.swing.JFrame

EXIT_ON_CLOSE

Fields inherited from class java.awt.Frame

CROSSHAIR_CURSOR, DEFAULT_CURSOR, E_RESIZE_CURSOR, HAND_CURSOR, ICONIFIED, MAXIMIZED_BOTH, MAXIMIZED_HORIZ, MAXIMIZED_VERT, MOVE_CURSOR, N_RESIZE_CURSOR, NE_RESIZE_CURSOR, NORMAL, NW_RESIZE_CURSOR, S_RESIZE_CURSOR, SE_RESIZE_CURSOR, SW_RESIZE_CURSOR, TEXT_CURSOR, W_RESIZE_CURSOR, WAIT_CURSOR

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface javax.swing.WindowConstants

DISPOSE_ON_CLOSE, DO_NOTHING_ON_CLOSE, HIDE_ON_CLOSE

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

DrawingBoard()
Default constructor that creates an instance of DrawingBoard with the title "D R A W I N G B O A R D"

DrawingBoard(java.lang.String title)
Constructor that creates an instance of DrawingBoard with the designated title.

Method Summary

void	drawCircle(int x, int y, int radius) Draws a circle whose center point is designated by the parameters x and y.
void	drawLine(int x1, int y1, int x2, int y2) Draws a line between two designated points p1 and p2.
void	drawRectangle(int x, int y, int width, int height) Draws a rectangle with its origin (top, leftmost corner) at (x,y).
void	drawRectangle(java.awt.Rectangle rect) Draws a rectangle whose dimension is designated by the parameter rect of type Rectangle.
void	setColor(java.awt.Color c) Sets the drawing color to the argument Color object.
void	setVisible(boolean view) Makes the window appear on disappear from the screen.
void	show() Deprecated. This method is supported for backward compatibility. Use setVisible.

Methods inherited from class javax.swing.JFrame

getAccessibleContext, getContentPane, getDefaultCloseOperation, getGlassPane, getJMenuBar, getLayeredPane, getRootPane, isDefaultLookAndFeelDecorated, remove, setContentPane, setDefaultCloseOperation, setDefaultLookAndFeelDecorated, setGlassPane, setJMenuBar, setLayeredPane, setLayout, update

Methods inherited from class java.awt.Frame

addNotify, getCursorType, getExtendedState, getFrames, getIconImage, getMaximizedBounds, getMenuBar, getState, getTitle, isResizable, isUndecorated, remove, removeNotify, setCursor, setExtendedState, setIconImage, setMaximizedBounds, setMenuBar, setResizable, setState, setTitle, setUndecorated

Methods inherited from class java.awt.Window

addPropertyChangeListener, addPropertyChangeListener, addWindowFocusListener, addWindowListener, addWindowStateListener, applyResourceBundle, applyResourceBundle, createBufferStrategy, createBufferStrategy, dispose, getBufferStrategy, getFocusableWindowState, getFocusCycleRootAncestor, getFocusOwner, getFocusTraversalKeys, getGraphicsConfiguration, getInputContext, getListeners, getLocale, getMostRecentFocusOwner, getOwnedWindows, getOwner, getToolkit, getWarningString, getWindowFocusListeners, getWindowListeners, getWindowStateListeners, hide, isActive, isFocusableWindow, isFocusCycleRoot, isFocused, isShowing, pack, postEvent, removeWindowFocusListener, removeWindowListener, removeWindowStateListener, setCursor, setFocusableWindowState, setFocusCycleRoot, setLocationRelativeTo, toBack, toFront

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalPolicy, getInsets, getLayout, getMaximumSize, getMinimumSize, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paint, paintComponents, preferredSize, print, printComponents, remove, removeAll, removeContainerListener, setFocusTraversalKeys, setFocusTraversalPolicy, setFont, transferFocusBackward, transferFocusDownCycle, validate

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, dispatchEvent, enable, enable, enableInputMethods, getBackground, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isOpaque, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, prepareImage, prepareImage, printAll, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.awt.MenuContainer

getFont, postEvent

Constructor Detail

DrawingBoard

public DrawingBoard()

Default constructor that creates an instance of DrawingBoard with the title "D R A W I N G B O A R D"

DrawingBoard

public DrawingBoard(java.lang.String title)

Constructor that creates an instance of DrawingBoard with the designated title.

Parameters:

title - the title of the window

Method Detail

drawCircle

public void drawCircle(int x,
                       int y,
                       int radius)

Draws a circle whose center point is designated by the parameters x and y. The circle's radius is set by the third parameter.

Parameters:

x - x coordinate of the circle's center

y - y coordinate of the circle's center

radius - this circle's radius

drawLine

public void drawLine(int x1,
                     int y1,
                     int x2,
                     int y2)

Draws a line between two designated points p1 and p2.

Parameters:

x1 - x coordinate of the first point p1

y1 - y coordinate of the first point p1

x2 - x coordinate of the second point p2

y2 - y coordinate of the second point p2

drawRectangle

public void drawRectangle(int x,
                          int y,
                          int width,
                          int height)

Draws a rectangle with its origin (top, leftmost corner) at (x,y). Its width and height are determined by the paramaters width and height.

Parameters:

x - x coordinate of the origin point

y - y coordinate of the origin point

width - the rectangle's width in pixels

height - the rectangle's height in pixels

drawRectangle

public void drawRectangle(java.awt.Rectangle rect)

Draws a rectangle whose dimension is designated by the parameter rect of type Rectangle.

Parameters:

rect - specifies the dimension of the rectangle.

See Also:

Rectangle

setColor

public void setColor(java.awt.Color c)

Sets the drawing color to the argument Color object. All subsequent drawings will be done in the set color.

Parameters:

c - the color of all subsequent drawings

setVisible

public void setVisible(boolean view)

Makes the window appear on disappear from the screen.

Parameters:

view - The value 'true' makes the window appear on the screen and 'false' makes it disappear from the screen.

show

public void show()

Deprecated. This method is supported for backward compatibility. Use setVisible.

Makes the window appear on the screen.