VolumeJ
Class VJViewerCanvas

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Canvas
              |
              +--ij.gui.ImageCanvas
                    |
                    +--VolumeJ.VJViewerCanvas

All Implemented Interfaces:

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

public class VJViewerCanvas

extends ij.gui.ImageCanvas

This class is an interactive rendering viewer. The GUI allows the rendering to be scaled and rotated using the mouse. Copyright (c) 2001-2003, Michael Abramoff. All rights reserved.

See Also:

Serialized Form

Inner classes inherited from class java.awt.Canvas

java.awt.Canvas.AccessibleAWTCanvas

Inner classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent, java.awt.Component.AWTTreeLock

Field Summary

protected long	clickTime Some practical variables
protected static int	FINETHRESHOLD
protected boolean	mouseIsDown
protected static float	PIXELSDEGREES Mouse motion (in pixels) that stands for a single radian in rotation.
protected VJRenderViewInteractive	renderView The rendering viewer
protected int	startMouseX
protected int	startMouseY

Fields inherited from class ij.gui.ImageCanvas

ADD_TO_ROI, count, crosshairCursor, defaultCursor, firstFrame, fps, frames, handCursor, imageHeight, imageUpdated, imageWidth, imp, moveCursor, NO_MODS, roiModState, srcRect, SUBTRACT_FROM_ROI, usePointer, xMouse, yMouse

Fields inherited from class java.awt.Component

accessibleContext, actionListenerK, adjustmentListenerK, appContext, background, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, componentListener, componentListenerK, componentOrientation, containerListenerK, cursor, dropTarget, enabled, eventMask, focusListener, focusListenerK, font, foreground, graphicsConfig, hasFocus, height, hierarchyBoundsListener, hierarchyBoundsListenerK, hierarchyListener, hierarchyListenerK, incRate, inputMethodListener, inputMethodListenerK, isInc, isPacked, itemListenerK, keyListener, keyListenerK, LEFT_ALIGNMENT, locale, LOCK, metrics, minSize, mouseListener, mouseListenerK, mouseMotionListener, mouseMotionListenerK, newEventsOnly, ownedWindowK, parent, peer, peerFont, popups, prefSize, RIGHT_ALIGNMENT, textListenerK, TOP_ALIGNMENT, valid, visible, width, windowClosingException, windowListenerK, x, y

Fields inherited from interface java.awt.image.ImageObserver

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

Constructor Summary

VJViewerCanvas(ij.ImagePlus imp)
Create a new VJViewerCanvas for imp.

Method Summary

protected float	distanceToAngle(int dx) Compute the angle corresponding to a mouse motion (in pixels) dx.
void	effectDragging(int dx, int dy) User pressed mouse button, moved mouse, and released.
void	mousePressed(java.awt.event.MouseEvent e) Process a mouse button down event.
void	mouseReleased(java.awt.event.MouseEvent e) Process a mouse button up event.
void	setRenderView(VJRenderViewInteractive renderView) Set the VJRenderViewInteractive instance to process actions.

Methods inherited from class ij.gui.ImageCanvas

, canEnlarge, drawImage, getColor, getCursorLoc, getHigherZoomLevel, getLowerZoomLevel, getMagnification, getModifiers, getPreferredSize, getSrcRect, handlePopupMenu, handleRoiMouseDown, mouseClicked, mouseDragged, mouseEntered, mouseExited, mouseMoved, offScreenX, offScreenY, paint, resizeCanvas, screenX, screenY, scroll, setCursor, setDrawingColor, setDrawingSize, setImageUpdated, setMagnification, setRoiModState, setupScroll, showFrameRate, unzoom, update, zoomIn, zoomOut

Methods inherited from class java.awt.Canvas

addNotify, constructComponentName, getAccessibleContext, postsOldMouseEvents

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addPropertyChangeListener, addPropertyChangeListener, areInputMethodsEnabled, bounds, checkGD, checkImage, checkImage, checkWindowClosingException, coalesceEvents, contains, contains, createChildHierarchyEvents, createHierarchyEvents, createImage, createImage, deliverEvent, disable, disableEvents, dispatchEvent, dispatchEventImpl, doLayout, enable, enable, enableEvents, enableInputMethods, eventEnabled, firePropertyChange, getAccessibleIndexInParent, getAccessibleStateSet, getAlignmentX, getAlignmentY, getBackground, getBounds, getBounds, getColorModel, getComponentAt, getComponentAt, getComponentOrientation, getCursor, getDropTarget, getFont_NoClientCode, getFont, getFontMetrics, getForeground, getGraphics, getGraphicsConfiguration, getHeight, getInputContext, getInputMethodRequests, getListeners, getLocale, getLocation, getLocation, getLocationOnScreen_NoTreeLock, getLocationOnScreen, getMaximumSize, getMinimumSize, getName, getNativeContainer, getParent_NoClientCode, getParent, getPeer, getSize, getSize, getToolkit, getToolkitImpl, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, invalidate, isDisplayable, isDoubleBuffered, isEnabled, isEnabledImpl, isFocusTraversable, isLightweight, isOpaque, isRecursivelyVisible, isShowing, isValid, isVisible, keyDown, keyUp, layout, lightweightPaint, lightweightPrint, list, list, list, list, list, locate, location, lostFocus, minimumSize, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, numListening, paintAll, paintHeavyweightComponents, paramString, postEvent, preferredSize, prepareImage, prepareImage, print, printAll, printHeavyweightComponents, processComponentEvent, processEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeNotify, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, resetGC, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFont, setForeground, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus, validate

Methods inherited from class java.lang.Object

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

Field Detail

FINETHRESHOLD

protected static final int FINETHRESHOLD

PIXELSDEGREES

protected static final float PIXELSDEGREES

Mouse motion (in pixels) that stands for a single radian in rotation.

renderView

protected VJRenderViewInteractive renderView

The rendering viewer

clickTime

protected long clickTime

Some practical variables

mouseIsDown

protected boolean mouseIsDown

startMouseX

protected int startMouseX

startMouseY

protected int startMouseY

Constructor Detail

VJViewerCanvas

public VJViewerCanvas(ij.ImagePlus imp)

Create a new VJViewerCanvas for imp.

Parameters:

imp - the ImagePlus for which this canvas will be created.

Method Detail

setRenderView

public void setRenderView(VJRenderViewInteractive renderView)

Set the VJRenderViewInteractive instance to process actions. This Instance is not yet available at the creation of this canvas.

effectDragging

public void effectDragging(int dx,
                           int dy)

User pressed mouse button, moved mouse, and released. Change the view and start rendering.

distanceToAngle

protected float distanceToAngle(int dx)

Compute the angle corresponding to a mouse motion (in pixels) dx. Correct so that small movements result in tiny rotation for fine control.

Parameters:

dx - the amount of pixels the mouse has moved.

Returns:

the angle in degrees corresponding to dx.

mousePressed

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

Process a mouse button down event.

Overrides:

mousePressed in class ij.gui.ImageCanvas

Parameters:

e - the MouseEvent with the parameters.

mouseReleased

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

Process a mouse button up event. This is where the rendering will be redrawn

Overrides:

mouseReleased in class ij.gui.ImageCanvas

Parameters:

e - the MouseEvent with the parameters.