wjhk.jupload2.gui.image

Class PicturePanel

java.lang.Object

java.awt.Component

java.awt.Canvas

wjhk.jupload2.gui.image.PicturePanel

All Implemented Interfaces:

ComponentListener, MouseListener, ImageObserver, MenuContainer, Serializable, EventListener, Accessible

Direct Known Subclasses:

DialogPicturePanel

public class PicturePanel
extends Canvas
implements MouseListener, ComponentListener

This panel is used to preview picture, when PictureUploadPolicy (or one of its inherited policy) is used. Manages the panel where pictures are displayed.
Each time a user selects a file in the panel file, the PictureUploadPolicy calls setPictureFile(PictureFileData, AbstractButton, AbstractButton). I did an attempt to store the Image generated for the Panel size into the PictureFileData, to avoid to calculate the offscreenPicture each time the user select the same file again. But it doesn't work: the applet quickly runs out of memory, even after numerous calls of System.gc and finalize.

This file is taken from the PictureApplet ((C) 2002 Guillaume Chamberland-Larose), available here: To contact Guillaume Chamberland-Larose for bugs, patches, suggestions: Please use the forums on the sourceforge web page for this project, located at: http://sourceforge.net/projects/picture-applet/ Updated : 2006 etienne_sf
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

See Also:

Serialized Form

Nested Class Summary

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

Canvas.AccessibleAWTCanvas

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

Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

Fields

Modifier and Type	Field and Description
protected UploadPolicy	uploadPolicy The current upload policy.

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

Constructor Summary

Constructors

Constructor and Description
PicturePanel(boolean hasToStoreOffscreenPicture, UploadPolicy uploadPolicy) Standard constructor.

Method Summary

Modifier and Type	Method and Description
void	componentHidden(ComponentEvent arg0)
void	componentMoved(ComponentEvent arg0)
void	componentResized(ComponentEvent arg0)
void	componentShown(ComponentEvent arg0)
protected void	finalize() Is it really useful ??
void	mouseClicked(MouseEvent arg0)
void	mouseEntered(MouseEvent arg0)
void	mouseExited(MouseEvent arg0)
void	mousePressed(MouseEvent arg0)
void	mouseReleased(MouseEvent arg0)
void	paint(Graphics g)
void	rotate(int quarter) This function adds a quarter rotation to the current picture.
void	setPictureFile(PictureFileData pictureFileData, AbstractButton button1, AbstractButton button2) This setter is called by PictureFileData to set the picture that is to be previewed.

Methods inherited from class java.awt.Canvas

addNotify, createBufferStrategy, createBufferStrategy, getAccessibleContext, getBufferStrategy, update

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, deliverEvent, disable, disableEvents, dispatchEvent, doLayout, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getAlignmentX, getAlignmentY, getBackground, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeys, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getListeners, getLocale, getLocation, getLocation, getLocationOnScreen, getMaximumSize, getMinimumSize, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPreferredSize, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusCycleRoot, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, layout, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, revalidate, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeys, setFocusTraversalKeysEnabled, setFont, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle, validate

Methods inherited from class java.lang.Object

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

Field Detail

uploadPolicy

protected UploadPolicy uploadPolicy

The current upload policy.

Constructor Detail

PicturePanel

public PicturePanel(boolean hasToStoreOffscreenPicture,
                    UploadPolicy uploadPolicy)

Standard constructor.

Parameters:

hasToStoreOffscreenPicture -

uploadPolicy - The current upload policy

Method Detail

setPictureFile

public void setPictureFile(PictureFileData pictureFileData,
                           AbstractButton button1,
                           AbstractButton button2)

This setter is called by PictureFileData to set the picture that is to be previewed.

Parameters:

pictureFileData - The FileData for the image to be displayed. Null if no picture should be displayed.

button1 - A button that will be activated or not, depending of the pictures was correctly set into the panel. May be null, if not button is to be enabled.

button2 - Another button that will be activated or not. May also be null.

paint

public void paint(Graphics g)

Overrides:

paint in class Canvas

See Also:

Canvas.paint(java.awt.Graphics)

rotate

public void rotate(int quarter)

This function adds a quarter rotation to the current picture.

Parameters:

quarter - Number of quarters (90�) the picture should rotate. 1 means rotating of 90� clockwise (?). Can be negative (counterclockwise), more than 1...

finalize

protected void finalize()
                 throws Throwable

Is it really useful ??

Overrides:

finalize in class Object

Throws:

Throwable

mouseClicked

public void mouseClicked(MouseEvent arg0)

Specified by:

mouseClicked in interface MouseListener

See Also:

MouseListener.mouseClicked(java.awt.event.MouseEvent)

mouseEntered

public void mouseEntered(MouseEvent arg0)

Specified by:

mouseEntered in interface MouseListener

See Also:

MouseListener.mouseEntered(java.awt.event.MouseEvent)

mouseExited

public void mouseExited(MouseEvent arg0)

Specified by:

mouseExited in interface MouseListener

See Also:

MouseListener.mouseExited(java.awt.event.MouseEvent)

mousePressed

public void mousePressed(MouseEvent arg0)

Specified by:

mousePressed in interface MouseListener

See Also:

MouseListener.mousePressed(java.awt.event.MouseEvent)

mouseReleased

public void mouseReleased(MouseEvent arg0)

Specified by:

mouseReleased in interface MouseListener

See Also:

MouseListener.mouseReleased(java.awt.event.MouseEvent)

componentHidden

public void componentHidden(ComponentEvent arg0)

Specified by:

componentHidden in interface ComponentListener

See Also:

ComponentListener.componentHidden(java.awt.event.ComponentEvent)

componentMoved

public void componentMoved(ComponentEvent arg0)

Specified by:

componentMoved in interface ComponentListener

See Also:

ComponentListener.componentMoved(java.awt.event.ComponentEvent)

componentResized

public void componentResized(ComponentEvent arg0)

Specified by:

componentResized in interface ComponentListener

See Also:

ComponentListener.componentResized(java.awt.event.ComponentEvent)

componentShown

public void componentShown(ComponentEvent arg0)

Specified by:

componentShown in interface ComponentListener

See Also:

ComponentListener.componentShown(java.awt.event.ComponentEvent)