ij.gui
Class ImageCanvas

java.lang.Object
  java.awt.Component
      java.awt.Canvas
          ij.gui.ImageCanvas

All Implemented Interfaces:

java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, java.lang.Cloneable, java.util.EventListener, javax.accessibility.Accessible

public class ImageCanvas
extends java.awt.Canvas
implements java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.lang.Cloneable

This is as Canvas used to display images in a Window.

See Also:

Serialized Form

Nested Class Summary

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

java.awt.Canvas.AccessibleAWTCanvas

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

Field Summary

protected static java.awt.Cursor	crosshairCursor
protected static java.awt.Cursor	defaultCursor
protected static java.awt.Cursor	handCursor
protected boolean	imageUpdated
protected ImagePlus	imp
protected static java.awt.Cursor	moveCursor
static boolean	usePointer

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

ImageCanvas(ImagePlus imp)

Method Summary

java.awt.Point	getCursorLoc() Returns the current cursor location.
double	getMagnification()
java.awt.Dimension	getPreferredSize()
java.awt.Rectangle	getSrcRect()
void	mouseClicked(java.awt.event.MouseEvent e)
void	mouseDragged(java.awt.event.MouseEvent e)
void	mouseEntered(java.awt.event.MouseEvent e)
void	mouseExited(java.awt.event.MouseEvent e)
void	mouseMoved(java.awt.event.MouseEvent e)
void	mousePressed(java.awt.event.MouseEvent e)
void	mouseReleased(java.awt.event.MouseEvent e)
int	offScreenX(int x) Converts a screen x-coordinate to an offscreen x-coordinate.
int	offScreenY(int y) Converts a screen y-coordinate to an offscreen y-coordinate.
void	paint(java.awt.Graphics g)
void	print(java.awt.Graphics g, double scale)
int	screenX(int x) Converts an offscreen x-coordinate to a screen x-coordinate.
int	screenY(int y) Converts an offscreen y-coordinate to a screen y-coordinate.
void	setCursor(int x, int y) Sets the cursor based on the current tool and cursor location.
protected void	setDrawingColor(int ox, int oy, boolean setBackground)
void	setDrawingSize(int width, int height)
void	setImageUpdated() ImagePlus.updateAndDraw calls this method to get paint to update the image from the ImageProcessor.
void	setMagnification(double magnification)
void	update(java.awt.Graphics g)
void	zoomIn(int x, int y) Zooms in by making the window bigger.
void	zoomOut(int x, int y) Zooms out by making srcRect bigger.

Methods inherited from class java.awt.Canvas

addNotify, createBufferStrategy, createBufferStrategy, getAccessibleContext, getBufferStrategy

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, 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, 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, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

defaultCursor

protected static java.awt.Cursor defaultCursor

handCursor

protected static java.awt.Cursor handCursor

moveCursor

protected static java.awt.Cursor moveCursor

crosshairCursor

protected static java.awt.Cursor crosshairCursor

usePointer

public static boolean usePointer

imp

protected ImagePlus imp

imageUpdated

protected boolean imageUpdated

Constructor Detail

ImageCanvas

public ImageCanvas(ImagePlus imp)

Method Detail

setDrawingSize

public void setDrawingSize(int width,
                           int height)

setImageUpdated

public void setImageUpdated()

ImagePlus.updateAndDraw calls this method to get paint to update the image from the ImageProcessor.

update

public void update(java.awt.Graphics g)

Overrides:

update in class java.awt.Canvas

print

public void print(java.awt.Graphics g,
                  double scale)

paint

public void paint(java.awt.Graphics g)

Overrides:

paint in class java.awt.Canvas

getPreferredSize

public java.awt.Dimension getPreferredSize()

Overrides:

getPreferredSize in class java.awt.Component

getCursorLoc

public java.awt.Point getCursorLoc()

Returns the current cursor location.

setCursor

public void setCursor(int x,
                      int y)

Sets the cursor based on the current tool and cursor location.

offScreenX

public int offScreenX(int x)

Converts a screen x-coordinate to an offscreen x-coordinate.

offScreenY

public int offScreenY(int y)

Converts a screen y-coordinate to an offscreen y-coordinate.

screenX

public int screenX(int x)

Converts an offscreen x-coordinate to a screen x-coordinate.

screenY

public int screenY(int y)

Converts an offscreen y-coordinate to a screen y-coordinate.

getMagnification

public double getMagnification()

setMagnification

public void setMagnification(double magnification)

getSrcRect

public java.awt.Rectangle getSrcRect()

zoomIn

public void zoomIn(int x,
                   int y)

Zooms in by making the window bigger. If we can't make it bigger, then make the srcRect smaller.

zoomOut

public void zoomOut(int x,
                    int y)

Zooms out by making srcRect bigger. If we can't make it bigger, then make the window smaller.

setDrawingColor

protected void setDrawingColor(int ox,
                               int oy,
                               boolean setBackground)

mousePressed

public void mousePressed(java.awt.event.MouseEvent e)

Specified by:

mousePressed in interface java.awt.event.MouseListener

mouseExited

public void mouseExited(java.awt.event.MouseEvent e)

Specified by:

mouseExited in interface java.awt.event.MouseListener

mouseDragged

public void mouseDragged(java.awt.event.MouseEvent e)

Specified by:

mouseDragged in interface java.awt.event.MouseMotionListener

mouseReleased

public void mouseReleased(java.awt.event.MouseEvent e)

Specified by:

mouseReleased in interface java.awt.event.MouseListener

mouseMoved

public void mouseMoved(java.awt.event.MouseEvent e)

Specified by:

mouseMoved in interface java.awt.event.MouseMotionListener

mouseClicked

public void mouseClicked(java.awt.event.MouseEvent e)

Specified by:

mouseClicked in interface java.awt.event.MouseListener

mouseEntered

public void mouseEntered(java.awt.event.MouseEvent e)

Specified by:

mouseEntered in interface java.awt.event.MouseListener