PicturePanel (HTML Parser 1.6)

java.lang.Object
- java.awt.Component
- - java.awt.Container
  - - javax.swing.JComponent
    - - javax.swing.JPanel
      - org.htmlparser.lexerapplications.thumbelina.PicturePanel

All Implemented Interfaces:

java.awt.event.ComponentListener, java.awt.event.HierarchyListener, java.awt.event.MouseListener, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, java.util.EventListener, javax.accessibility.Accessible, javax.swing.Scrollable
```
public class PicturePanel
extends javax.swing.JPanel
implements java.awt.event.MouseListener, javax.swing.Scrollable, java.awt.event.ComponentListener, java.awt.event.HierarchyListener
```
Hold and display a group of pictures.

Author:

derrick

See Also:

Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class java.awt.Component
  java.awt.Component.AccessibleAWTComponent, java.awt.Component.BaselineResizeBehavior, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy
- Nested classes/interfaces inherited from class java.awt.Container
  java.awt.Container.AccessibleAWTContainer
- Nested classes/interfaces inherited from class javax.swing.JComponent
  javax.swing.JComponent.AccessibleJComponent
- Nested classes/interfaces inherited from class javax.swing.JPanel
  javax.swing.JPanel.AccessibleJPanel

Field Summary

Fields
Modifier and Type	Field	Description
`protected static int`	`BLOCK_INCREMENT`	Scrolling block increment (both directions).
`protected TileSet`	`mMosaic`	The display mosaic.
`protected java.awt.Dimension`	`mPreferredSize`	The preferred size of this component.
`protected Thumbelina`	`mThumbelina`	The thumbelina object in use.
`protected static int`	`UNIT_INCREMENT`	Scrolling unit increment (both directions).

Fields inherited from class java.awt.Component
accessibleContext, 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

Fields inherited from class javax.swing.JComponent
listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Constructor Summary

Constructors
Constructor Description

PicturePanel(Thumbelina thumbelina)
Creates a new instance of PicturePanel

Constructors
Constructor	Description
`PicturePanel(Thumbelina thumbelina)`	Creates a new instance of PicturePanel

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`adjustClipForInsets(java.awt.Graphics graphics)`	Adjust the graphics clip region to account for insets.
`void`	`bringToTop(Picture picture)`	Move the given picture to the top of the Z order.
`protected java.awt.Dimension`	`calculatePreferredSize()`	Compute the preferred size of the component.
`void`	`componentHidden(java.awt.event.ComponentEvent event)`	Invoked when the component has been made invisible.
`void`	`componentMoved(java.awt.event.ComponentEvent event)`	Invoked when the component's position changes.
`void`	`componentResized(java.awt.event.ComponentEvent event)`	Invoked when the container's size changes.
`void`	`componentShown(java.awt.event.ComponentEvent event)`	Invoked when the component has been made visible.
`protected void`	`draw(Picture picture, boolean add)`	Draw an image on screen.
`Picture`	`find(java.lang.String url)`	Find a picture with the given URL in the panel.
`java.awt.Dimension`	`getPreferredScrollableViewportSize()`	Returns the preferred size of the viewport for a view component.
`java.awt.Dimension`	`getPreferredSize()`	Get the preferred size of the component.
`int`	`getScrollableBlockIncrement(java.awt.Rectangle visibleRect, int orientation, int direction)`	Components that display logical rows or columns should compute the scroll increment that will completely expose one block of rows or columns, depending on the value of orientation.
`boolean`	`getScrollableTracksViewportHeight()`	Return true if a viewport should always force the height of this Scrollable to match the height of the viewport.
`boolean`	`getScrollableTracksViewportWidth()`	Return true if a viewport should always force the width of this `Scrollable` to match the width of the viewport.
`int`	`getScrollableUnitIncrement(java.awt.Rectangle visibleRect, int orientation, int direction)`	Components that display logical rows or columns should compute the scroll increment that will completely expose one new row or column, depending on the value of orientation.
`void`	`hierarchyChanged(java.awt.event.HierarchyEvent event)`	Handles this components ancestor being added to a container.
`void`	`mouseClicked(java.awt.event.MouseEvent event)`	Invoked when the mouse button has been clicked (pressed and released) on a component.
`void`	`mouseEntered(java.awt.event.MouseEvent event)`	Invoked when the mouse enters a component.
`void`	`mouseExited(java.awt.event.MouseEvent event)`	Invoked when the mouse exits a component.
`void`	`mousePressed(java.awt.event.MouseEvent event)`	Handle left click on a picture by bringing it to the top.
`void`	`mouseReleased(java.awt.event.MouseEvent event)`	Invoked when a mouse button has been released on a component.
`void`	`paint(java.awt.Graphics graphics)`	Paints this component.
`void`	`reset()`	Clears the panel, discarding any existing images.
`void`	`setPreferredSize(java.awt.Dimension dimension)`	Sets the preferred size of this component.
`void`	`update(java.awt.Graphics graphics)`	Updates this component.

Methods inherited from class java.awt.Component
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setMixingCutoutShape, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusDownCycle, validate, validateTree

Methods inherited from class javax.swing.JComponent
addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, hide, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingOrigin, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paintBorder, paintChildren, paintComponent, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction

Methods inherited from class javax.swing.JPanel
getAccessibleContext, getUI, getUIClassID, paramString, setUI, updateUI

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - UNIT_INCREMENT
```
protected static final int UNIT_INCREMENT
```
    Scrolling unit increment (both directions).
    
    See Also:
    
    Constant Field Values
  - BLOCK_INCREMENT
```
protected static final int BLOCK_INCREMENT
```
    Scrolling block increment (both directions).
    
    See Also:
    
    Constant Field Values
  - mThumbelina
```
protected Thumbelina mThumbelina
```
    The thumbelina object in use.
  - mMosaic
```
protected TileSet mMosaic
```
    The display mosaic.
  - mPreferredSize
```
protected java.awt.Dimension mPreferredSize
```
    The preferred size of this component. null initially, caches the results of calculatePreferredSize ().
- Constructor Detail
  - PicturePanel
```
public PicturePanel(Thumbelina thumbelina)
```
    Creates a new instance of PicturePanel
    
    Parameters:
    
    thumbelina - The Thumeblina this panel is associated with.
- Method Detail
  - reset
```
public void reset()
```
    Clears the panel, discarding any existing images.
  - bringToTop
```
public void bringToTop(Picture picture)
```
    Move the given picture to the top of the Z order. Adds it, even it if it doesn't exist. Also puts the URL in the url text of the status bar.
    
    Parameters:
    
    picture - The picture being brought forward.
  - find
```
public Picture find(java.lang.String url)
```
    Find a picture with the given URL in the panel. This should really only be used to discover if the picture is still visible. There could be more than one picture with the given URL because it may be partially obscured by another picture, in which case the pieces are each given their own picture object, but all point at the same URL and Image.
    
    Parameters:
    
    url - The url to locate.
    
    Returns:
    
    The first picture encountered in the panel, or null if the picture was not found.
  - draw
```
protected void draw(Picture picture,
                    boolean add)
```
    Draw an image on screen.
    
    Parameters:
    
    picture - The picture to draw.
    
    add - If true, the picture is added to the history.
  - update
```
public void update(java.awt.Graphics graphics)
```
    Updates this component.
    
    Overrides:
    
    update in class javax.swing.JComponent
    
    Parameters:
    
    graphics - The graphics context in which to update the component.
  - adjustClipForInsets
```
public void adjustClipForInsets(java.awt.Graphics graphics)
```
    Adjust the graphics clip region to account for insets.
    
    Parameters:
    
    graphics - The graphics object to set the clip region for.
  - paint
```
public void paint(java.awt.Graphics graphics)
```
    Paints this component. Runs through the list of tiles and for every one that intersects the clip region performs a drawImage().
    
    Overrides:
    
    paint in class javax.swing.JComponent
    
    Parameters:
    
    graphics - The graphics context used to paint with.
  - getPreferredSize
```
public java.awt.Dimension getPreferredSize()
```
    Get the preferred size of the component.
    
    Overrides:
    
    getPreferredSize in class javax.swing.JComponent
    
    Returns:
    
    The dimension of this component.
  - setPreferredSize
```
public void setPreferredSize(java.awt.Dimension dimension)
```
    Sets the preferred size of this component.
    
    Overrides:
    
    setPreferredSize in class javax.swing.JComponent
    
    Parameters:
    
    dimension - The new value to use for getPreferredSize() until recalculated.
  - calculatePreferredSize
```
protected java.awt.Dimension calculatePreferredSize()
```
    Compute the preferred size of the component. Computes the minimum bounding rectangle covering all the pictures in the panel. It then does some funky stuff to handle embedding in the view port of a scroll pane, basically asking up the ancestor heirarchy what size is available, and filling it.
    
    Returns:
    
    The optimal dimension for this component.
  - mouseClicked
```
public void mouseClicked(java.awt.event.MouseEvent event)
```
    Invoked when the mouse button has been clicked (pressed and released) on a component. Not used.
    
    Specified by:
    
    mouseClicked in interface java.awt.event.MouseListener
    
    Parameters:
    
    event - The object providing details of the mouse event.
  - mouseReleased
```
public void mouseReleased(java.awt.event.MouseEvent event)
```
    Invoked when a mouse button has been released on a component. Not used.
    
    Specified by:
    
    mouseReleased in interface java.awt.event.MouseListener
    
    Parameters:
    
    event - The object providing details of the mouse event.
  - mouseEntered
```
public void mouseEntered(java.awt.event.MouseEvent event)
```
    Invoked when the mouse enters a component. Not used.
    
    Specified by:
    
    mouseEntered in interface java.awt.event.MouseListener
    
    Parameters:
    
    event - The object providing details of the mouse event.
  - mouseExited
```
public void mouseExited(java.awt.event.MouseEvent event)
```
    Invoked when the mouse exits a component. Not used.
    
    Specified by:
    
    mouseExited in interface java.awt.event.MouseListener
    
    Parameters:
    
    event - The object providing details of the mouse event.
  - mousePressed
```
public void mousePressed(java.awt.event.MouseEvent event)
```
    Handle left click on a picture by bringing it to the top.
    
    Specified by:
    
    mousePressed in interface java.awt.event.MouseListener
    
    Parameters:
    
    event - The object providing details of the mouse event.
  - getPreferredScrollableViewportSize
```
public java.awt.Dimension getPreferredScrollableViewportSize()
```
    Returns the preferred size of the viewport for a view component. For example the preferredSize of a JList component is the size required to accommodate all of the cells in its list however the value of preferredScrollableViewportSize is the size required for JList.getVisibleRowCount() rows. A component without any properties that would effect the viewport size should just return getPreferredSize() here.
    
    Specified by:
    
    getPreferredScrollableViewportSize in interface javax.swing.Scrollable
    
    Returns:
    
    The preferredSize of a JViewport whose view is this Scrollable.
    
    See Also:
    
    JComponent.getPreferredSize()
  - getScrollableUnitIncrement
```
public int getScrollableUnitIncrement(java.awt.Rectangle visibleRect,
                                      int orientation,
                                      int direction)
```
    Components that display logical rows or columns should compute the scroll increment that will completely expose one new row or column, depending on the value of orientation. Ideally, components should handle a partially exposed row or column by returning the distance required to completely expose the item.
    Scrolling containers, like JScrollPane, will use this method each time the user requests a unit scroll.
    
    Specified by:
    
    getScrollableUnitIncrement in interface javax.swing.Scrollable
    
    Parameters:
    
    visibleRect - The view area visible within the viewport
    
    orientation - Either SwingConstants.VERTICAL or SwingConstants.HORIZONTAL.
    
    direction - Less than zero to scroll up/left, greater than zero for down/right.
    
    Returns:
    
    The "unit" increment for scrolling in the specified direction. This value should always be positive.
  - getScrollableBlockIncrement
```
public int getScrollableBlockIncrement(java.awt.Rectangle visibleRect,
                                       int orientation,
                                       int direction)
```
    Components that display logical rows or columns should compute the scroll increment that will completely expose one block of rows or columns, depending on the value of orientation.
    Scrolling containers, like JScrollPane, will use this method each time the user requests a block scroll.
    
    Specified by:
    
    getScrollableBlockIncrement in interface javax.swing.Scrollable
    
    Parameters:
    
    visibleRect - The view area visible within the viewport
    
    orientation - Either SwingConstants.VERTICAL or SwingConstants.HORIZONTAL.
    
    direction - Less than zero to scroll up/left, greater than zero for down/right.
    
    Returns:
    
    The "block" increment for scrolling in the specified direction. This value should always be positive.
  - getScrollableTracksViewportWidth
```
public boolean getScrollableTracksViewportWidth()
```
    Return true if a viewport should always force the width of this Scrollable to match the width of the viewport. For example a normal text view that supported line wrapping would return true here, since it would be undesirable for wrapped lines to disappear beyond the right edge of the viewport. Note that returning true for a Scrollable whose ancestor is a JScrollPane effectively disables horizontal scrolling.
    Scrolling containers, like JViewport, will use this method each time they are validated.
    
    Specified by:
    
    getScrollableTracksViewportWidth in interface javax.swing.Scrollable
    
    Returns:
    
    true if a viewport should force the Scrollables width to match its own.
  - getScrollableTracksViewportHeight
```
public boolean getScrollableTracksViewportHeight()
```
    Return true if a viewport should always force the height of this Scrollable to match the height of the viewport. For example a columnar text view that flowed text in left to right columns could effectively disable vertical scrolling by returning true here.
    Scrolling containers, like JViewport, will use this method each time they are validated.
    
    Specified by:
    
    getScrollableTracksViewportHeight in interface javax.swing.Scrollable
    
    Returns:
    
    true if a viewport should force the Scrollables height to match its own.
  - componentResized
```
public void componentResized(java.awt.event.ComponentEvent event)
```
    Invoked when the container's size changes. Un-caches the preferred size.
    
    Specified by:
    
    componentResized in interface java.awt.event.ComponentListener
    
    Parameters:
    
    event - The resize event.
  - componentMoved
```
public void componentMoved(java.awt.event.ComponentEvent event)
```
    Invoked when the component's position changes. Not used.
    
    Specified by:
    
    componentMoved in interface java.awt.event.ComponentListener
    
    Parameters:
    
    event - The component event.
  - componentShown
```
public void componentShown(java.awt.event.ComponentEvent event)
```
    Invoked when the component has been made visible. Not used.
    
    Specified by:
    
    componentShown in interface java.awt.event.ComponentListener
    
    Parameters:
    
    event - The component event.
  - componentHidden
```
public void componentHidden(java.awt.event.ComponentEvent event)
```
    Invoked when the component has been made invisible. Not used.
    
    Specified by:
    
    componentHidden in interface java.awt.event.ComponentListener
    
    Parameters:
    
    event - The component event.
  - hierarchyChanged
```
public void hierarchyChanged(java.awt.event.HierarchyEvent event)
```
    Handles this components ancestor being added to a container. Registers this component as a listener for size changes on the ancestor so that we may un-cache the prefereed size and force a recalculation.
    
    Specified by:
    
    hierarchyChanged in interface java.awt.event.HierarchyListener
    
    Parameters:
    
    event - The heirarchy event.

Class PicturePanel

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.Component

Nested classes/interfaces inherited from class java.awt.Container

Nested classes/interfaces inherited from class javax.swing.JComponent

Nested classes/interfaces inherited from class javax.swing.JPanel

Field Summary

Fields inherited from class java.awt.Component

Fields inherited from interface java.awt.image.ImageObserver

Fields inherited from class javax.swing.JComponent

Constructor Summary

Method Summary

Methods inherited from class java.awt.Component

Methods inherited from class java.awt.Container

Methods inherited from class javax.swing.JComponent

Methods inherited from class javax.swing.JPanel

Methods inherited from class java.lang.Object

Field Detail

UNIT_INCREMENT

BLOCK_INCREMENT

mThumbelina

mMosaic

mPreferredSize

Constructor Detail

PicturePanel

Method Detail

reset

bringToTop

find

draw

update

adjustClipForInsets

paint

getPreferredSize

setPreferredSize

calculatePreferredSize

mouseClicked

mouseReleased

mouseEntered

mouseExited

mousePressed

getPreferredScrollableViewportSize

getScrollableUnitIncrement

getScrollableBlockIncrement

getScrollableTracksViewportWidth

getScrollableTracksViewportHeight

componentResized

componentMoved

componentShown

componentHidden

hierarchyChanged