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java.lang.Objectjava.awt.Component
java.awt.Container
java.awt.Panel
java.applet.Applet
SimpleDraw2
This app/applet interactively paints various shapes. It uses a ShapeFactory object to provide the list of possible shapes and two methods to create specified shapes from that list. When run as an application there is a simple one line modification that enables a subclass of ShapeFactory to be used which can include additional shapes. The default ShapeFactory includes only rectangles, ellipses, and squares.
This applet paints a shape of the color you've chosen wherever you click. This applet keeps a list of the shapes you've drawn and paints all the shapes in the list when it repaints.
Java's classes: Applet (applet)
Custom classes: SimpleDraw
Nested Class Summary |
Nested classes inherited from class java.applet.Applet |
java.applet.Applet.AccessibleApplet |
Nested classes inherited from class java.awt.Panel |
java.awt.Panel.AccessibleAWTPanel |
Nested classes inherited from class java.awt.Container |
java.awt.Container.AccessibleAWTContainer |
Nested classes inherited from class java.awt.Component |
java.awt.Component.AccessibleAWTComponent, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy |
Field Summary | |
static int |
defaultHeight
default Height for new shapes |
static int |
defaultWidth
default Width for new shapes |
Fields inherited from class java.awt.Component |
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT |
Fields inherited from interface java.awt.image.ImageObserver |
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH |
Constructor Summary | |
SimpleDraw2()
Default constructor uses the default shape factory. |
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SimpleDraw2(ShapeFactory factory)
The constructor which enables the shape factory to be specified by the main method. |
Method Summary | |
boolean |
action(java.awt.Event e,
java.lang.Object arg)
Clears all the shapes when the clear button is clicked. |
void |
init()
Initializes the Graphical User Interface. |
static void |
main(java.lang.String[] args)
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boolean |
mouseUp(java.awt.Event e,
int x,
int y)
When the user clicks the mouse in the drawing area, create a new shape at the location of the mouse. |
static void |
outputStuff(Shape x)
Print shape specific information to the console. |
void |
paint(java.awt.Graphics g)
Draw all the shapes. |
Methods inherited from class java.applet.Applet |
destroy, getAccessibleContext, getAppletContext, getAppletInfo, getAudioClip, getAudioClip, getCodeBase, getDocumentBase, getImage, getImage, getLocale, getParameter, getParameterInfo, isActive, newAudioClip, play, play, resize, resize, setStub, showStatus, start, stop |
Methods inherited from class java.awt.Panel |
addNotify |
Methods inherited from class java.awt.Container |
add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getInsets, getLayout, getListeners, getMaximumSize, getMinimumSize, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, paramString, preferredSize, print, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, removeNotify, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setFont, setLayout, transferFocusBackward, transferFocusDownCycle, update, validate, validateTree |
Methods inherited from class java.awt.Component |
add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isOpaque, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusUpCycle |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
public static final int defaultWidth
public static final int defaultHeight
Constructor Detail |
public SimpleDraw2(ShapeFactory factory)
public SimpleDraw2()
Method Detail |
public void init()
public void paint(java.awt.Graphics g)
public boolean mouseUp(java.awt.Event e, int x, int y)
public boolean action(java.awt.Event e, java.lang.Object arg)
public static void outputStuff(Shape x)
x
- the specific shape to be examined.public static void main(java.lang.String[] args)
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