Class ImageView 
java.lang.Object 
javax.swing.text.View javax.swing.text.html.ImageView     All Implemented Interfaces: SwingConstants  public class ImageView extends View View of an Image, intended to support the HTML <IMG> tag. Supports scaling via the HEIGHT and WIDTH attributes of the tag. If the image is unable to be loaded any text specified via the ALT attribute will be rendered.  While this class has been part of swing for a while now, it is public as of 1.4.
  Since: 1.4 See Also:   IconView       Field Summary  Fields declared in class javax.swing.text.View
 BadBreakWeight, ExcellentBreakWeight, ForcedBreakWeight, GoodBreakWeight, X_AXIS, Y_AXIS
  Fields declared in interface javax.swing.SwingConstants
 BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST
  Constructor Summary  
Constructor
Description


ImageView(Element elem)
 Creates a new view that represents an IMG element. 

  Method Summary    
Modifier and Type
Method
Description


void
changedUpdate(DocumentEvent e,
 Shape a,
 ViewFactory f)
 Invoked when the Elements attributes have changed. 


float
getAlignment(int axis)
 Determines the desired alignment for this view along an axis. 


String
getAltText()
 Returns the text to display if the image cannot be loaded. 


AttributeSet
getAttributes()
 Fetches the attributes to use when rendering. 


Image
getImage()
 Returns the image to render. 


URL
getImageURL()
 Return a URL for the image source, or null if it could not be determined. 


Icon
getLoadingImageIcon()
 Returns the icon to use while in the process of loading the image. 


boolean
getLoadsSynchronously()
 Returns true if the image should be loaded when first asked for. 


Icon
getNoImageIcon()
 Returns the icon to use if the image could not be found. 


float
getPreferredSpan(int axis)
 Determines the preferred span for this view along an axis. 


protected StyleSheet
getStyleSheet()
 Convenient method to get the StyleSheet. 


String
getToolTipText(float x,
 float y,
 Shape allocation)
 For images the tooltip text comes from text specified with the ALT attribute. 


Shape
modelToView(int pos,
 Shape a,
 Position.Bias b)
 Provides a mapping from the document model coordinate space to the coordinate space of the view mapped to it. 


void
paint(Graphics g,
 Shape a)
 Paints the View. 


void
setLoadsSynchronously(boolean newValue)
 Sets how the image is loaded. 


void
setParent(View parent)
 Establishes the parent view for this view. 


protected void
setPropertiesFromAttributes()
 Update any cached values that come from attributes. 


void
setSize(float width,
 float height)
 Sets the size of the view. 


int
viewToModel(float x,
 float y,
 Shape a,
 Position.Bias[] bias)
 Provides a mapping from the view coordinate space to the logical coordinate space of the model. 

    Methods declared in class javax.swing.text.View
 append, breakView, createFragment, forwardUpdate, forwardUpdateToView, getBreakWeight, getChildAllocation, getContainer, getDocument, getElement, getEndOffset, getGraphics, getMaximumSpan, getMinimumSpan, getNextVisualPositionFrom, getParent, getResizeWeight, getStartOffset, getView, getViewCount, getViewFactory, getViewIndex, getViewIndex, insert, insertUpdate, isVisible, modelToView, modelToView, preferenceChanged, remove, removeAll, removeUpdate, replace, updateChildren, updateLayout, viewToModel
  Methods declared in class java.lang.Object
 clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
     Constructor Details  ImageView public ImageView(Element elem) Creates a new view that represents an IMG element.  Parameters: 
elem - the element to create a view for   Method Details  getAltText public String getAltText() Returns the text to display if the image cannot be loaded. This is obtained from the Elements attribute set with the attribute name HTML.Attribute.ALT.  Returns: the test to display if the image cannot be loaded.   getImageURL public URL getImageURL() Return a URL for the image source, or null if it could not be determined.  Returns: the URL for the image source, or null if it could not be determined.   getNoImageIcon public Icon getNoImageIcon() Returns the icon to use if the image could not be found.  Returns: the icon to use if the image could not be found.   getLoadingImageIcon public Icon getLoadingImageIcon() Returns the icon to use while in the process of loading the image.  Returns: the icon to use while in the process of loading the image.   getImage public Image getImage() Returns the image to render.  Returns: the image to render.   setLoadsSynchronously public void setLoadsSynchronously(boolean newValue) Sets how the image is loaded. If newValue is true, the image will be loaded when first asked for, otherwise it will be loaded asynchronously. The default is to not load synchronously, that is to load the image asynchronously.  Parameters: 
newValue - if true the image will be loaded when first asked for, otherwise it will be asynchronously.   getLoadsSynchronously public boolean getLoadsSynchronously() Returns true if the image should be loaded when first asked for.  Returns: 
true if the image should be loaded when first asked for.   getStyleSheet protected StyleSheet getStyleSheet() Convenient method to get the StyleSheet.  Returns: the StyleSheet   getAttributes public AttributeSet getAttributes() Fetches the attributes to use when rendering. This is implemented to multiplex the attributes specified in the model with a StyleSheet.  Overrides: 
getAttributes in class View
 Returns: the attributes to use when rendering   getToolTipText public String getToolTipText(float x, float y, Shape allocation) For images the tooltip text comes from text specified with the ALT attribute. This is overriden to return getAltText.  Overrides: 
getToolTipText in class View
 Parameters: 
x - the x coordinate 
y - the y coordinate 
allocation - current allocation of the View. Returns: the tooltip text at the specified location See Also:   JTextComponent.getToolTipText(java.awt.event.MouseEvent)     setPropertiesFromAttributes protected void setPropertiesFromAttributes() Update any cached values that come from attributes.  setParent public void setParent(View parent) Establishes the parent view for this view. Seize this moment to cache the AWT Container I'm in.  Overrides: 
setParent in class View
 Parameters: 
parent - the new parent, or null if the view is being removed from a parent   changedUpdate public void changedUpdate(DocumentEvent e, Shape a, ViewFactory f) Invoked when the Elements attributes have changed. Recreates the image.  Overrides: 
changedUpdate in class View
 Parameters: 
e - the change information from the associated document 
a - the current allocation of the view 
f - the factory to use to rebuild if the view has children See Also:   View.changedUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)     paint public void paint(Graphics g, Shape a) Paints the View.  Specified by: 
paint in class View
 Parameters: 
g - the rendering surface to use 
a - the allocated region to render into See Also:   View.paint(java.awt.Graphics, java.awt.Shape)     getPreferredSpan public float getPreferredSpan(int axis) Determines the preferred span for this view along an axis.  Specified by: 
getPreferredSpan in class View
 Parameters: 
axis - may be either X_AXIS or Y_AXIS Returns: the span the view would like to be rendered into; typically the view is told to render into the span that is returned, although there is no guarantee; the parent may choose to resize or break the view   getAlignment public float getAlignment(int axis) Determines the desired alignment for this view along an axis. This is implemented to give the alignment to the bottom of the icon along the y axis, and the default along the x axis.  Overrides: 
getAlignment in class View
 Parameters: 
axis - may be either X_AXIS or Y_AXIS Returns: the desired alignment; this should be a value between 0.0 and 1.0 where 0 indicates alignment at the origin and 1.0 indicates alignment to the full span away from the origin; an alignment of 0.5 would be the center of the view   modelToView public Shape modelToView(int pos, Shape a, Position.Bias b) throws BadLocationException Provides a mapping from the document model coordinate space to the coordinate space of the view mapped to it.  Specified by: 
modelToView in class View
 Parameters: 
pos - the position to convert 
a - the allocated region to render into 
b - the bias toward the previous character or the next character represented by the offset, in case the position is a boundary of two views; b will have one of these values:   Position.Bias.Forward 
 Position.Bias.Backward 

 Returns: the bounding box of the given position Throws: 
BadLocationException - if the given position does not represent a valid location in the associated document See Also:   View.modelToView(int, java.awt.Shape, javax.swing.text.Position.Bias)     viewToModel public int viewToModel(float x, float y, Shape a, Position.Bias[] bias) Provides a mapping from the view coordinate space to the logical coordinate space of the model.  Specified by: 
viewToModel in class View
 Parameters: 
x - the X coordinate 
y - the Y coordinate 
a - the allocated region to render into 
bias - the returned bias Returns: the location within the model that best represents the given point of view See Also:   View.viewToModel(float, float, java.awt.Shape, javax.swing.text.Position.Bias[])     setSize public void setSize(float width, float height) Sets the size of the view. This should cause layout of the view if it has any layout duties.  Overrides: 
setSize in class View
 Parameters: 
width - the width >= 0 
height - the height >= 0   

    
{'path': 'public/docs/openjdk~17/java.desktop/javax/swing/text/html/imageview.html', 'source': 'DevDocs.IO'}