java.lang.Object | +--javax.swing.text.View | +--javax.swing.text.CompositeView | +--javax.swing.text.BoxView | +--javax.swing.text.FlowView | +--javax.swing.text.ParagraphView
Safe: View of a simple line-wrapping paragraph that supports
multiple fonts, colors, components, icons, etc. It is
basically a vertical box with a margin around it. The
contents of the box are a bunch of rows which are special
horizontal boxes. This view creates a collection of
views that represent the child elements of the paragraph
element. Each of these views are placed into a row
directly if they will fit, otherwise the breakView
method is called to try and carve the view into pieces
that fit.
Viewprivate int
tabBase
majorAllocValid, majorAxis, majorOffsets, majorRequest, majorReqValid, majorSpan, majorSpans, minorAllocValid, minorOffsets, minorRequest, minorReqValid, minorSpan, minorSpans, tempRect
BadBreakWeight, ExcellentBreakWeight, ForcedBreakWeight, GoodBreakWeight, sharedBiasReturn, X_AXIS, Y_AXIS
BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST
protected void
adjustRow(javax.swing.text.ParagraphView.Row r,
int desiredSpan,
int x)
View
breakView(int axis,
float len,
Shape a)
void
changedUpdate(DocumentEvent changes,
Shape a,
ViewFactory f)
protected View
createRow()
View that should be used to hold a
a row's worth of children in a flow.
protected int
findOffsetToCharactersInString(char[] string,
int start)
string, starting at offset start.
protected boolean
flipEastAndWestAtEnds(int position,
javax.swing.text.Position.Bias bias)
protected int
getClosestPositionTo(int pos,
javax.swing.text.Position.Bias b,
Shape a,
int direction,
javax.swing.text.Position.Bias[] biasRet,
int rowIndex,
int x)
x.
int
getFlowSpan(int index)
int
getFlowStart(int index)
protected int
getNextNorthSouthVisualPositionFrom(int pos,
javax.swing.text.Position.Bias b,
Shape a,
int direction,
javax.swing.text.Position.Bias[] biasRet)
protected float
getPartialSize(int startOffset,
int endOffset)
startOffset and endOffset.
float
nextTabStop(float x,
int tabOffset)
void
paint(Graphics g,
Shape a)
calculateMinorAxisRequirements, getFlowAxis, getViewIndexAtPosition, insertUpdate, layout, loadChildren, removeUpdate
baselineLayout, baselineRequirements, calculateMajorAxisRequirements, checkRequests, childAllocation, forwardUpdate, getAxis, getChildAllocation, getHeight, getMaximumSpan, getMinimumSpan, getOffset, getPreferredSpan, getResizeWeight, getSpan, getSpanOnAxis, getViewAtPoint, getWidth, isAfter, isAllocationValid, isBefore, isLayoutValid, layoutChanged, layoutMajorAxis, layoutMinorAxis, modelToView, paintChild, preferenceChanged, replace, setAxis, setSize, setSpanOnAxis, updateChildSizes, updateLayoutArray, viewToModel
getBottomInset, getInsideAllocation, getLeftInset, getNextEastWestVisualPositionFrom, getNextVisualPositionFrom, getRightInset, getTopInset, getView, getViewAtPosition, getViewCount, getViewIndex, modelToView, setInsets, setParagraphInsets, setParent
append, breakView, createFragment, forwardUpdateToView, getAttributes, getBreakWeight, getContainer, getDocument, getElement, getEndOffset, getGraphics, getParent, getStartOffset, getToolTipText, getViewFactory, getViewIndex, insert, isVisible, modelToView, remove, removeAll, updateChildren, updateLayout, viewToModel
private int justification
private float lineSpacing
protected int firstLineIndent
private int tabBase
static Class i18nStrategy
static char[] tabChars
static char[] tabDecimalChars
public ParagraphView(Element elem)
ParagraphView for the given element.
elem - the element that this view is responsible forprotected void setJustification(int j)
j - one of the following values:
StyleConstants.ALIGN_LEFT
StyleConstants.ALIGN_CENTER
StyleConstants.ALIGN_RIGHT
protected void setLineSpacing(float ls)
ls - the value is a factor of the line hightprotected void setFirstLineIndent(float fi)
fi - the value in pointsprotected void setPropertiesFromAttributes()
protected int getLayoutViewCount()
Views
that represent the child elements. This is the number
of views that have been tiled in two dimensions,
and should be equivalent to the number of child elements
to the element this view is responsible for.
ParagraphView
is responsible forprotected View getLayoutView(int index)
index.
The child views of the paragraph are rows which
have been used to arrange pieces of the Views
that represent the child elements. This methods returns
the view responsible for the child element index
(prior to breaking). These are the Views that were
produced from a factory (to represent the child
elements) and used for layout.
index - the index of the desired view
indexprotected void adjustRow(javax.swing.text.ParagraphView.Row r, int desiredSpan, int x)
This is meant for internal usage, and should not be used directly.
r - the row to adjust to the current layout
spandesiredSpan - the current layout span>= 0x - the location r starts atprotected int getNextNorthSouthVisualPositionFrom(int pos, javax.swing.text.Position.Bias b, Shape a, int direction, javax.swing.text.Position.Bias[] biasRet) throws BadLocationException
CompositeView.
getNextNorthSouthVisualPositionFrom in class CompositeViewpos - position into the modela - the allocated region to render intodirection - either SwingConstants.NORTH
or SwingConstants.SOUTHbiasRet - an array containing the bias that were checked
in this methodb - a bias value of either Position.Bias.Forward
or Position.Bias.Backward
BadLocationExceptionCompositeView.getNextVisualPositionFrom(int, javax.swing.text.Position.Bias, java.awt.Shape, int, javax.swing.text.Position.Bias[])protected int getClosestPositionTo(int pos, javax.swing.text.Position.Bias b, Shape a, int direction, javax.swing.text.Position.Bias[] biasRet, int rowIndex, int x) throws BadLocationException
x.
rowIndex gives the index of the view that corresponds
that should be looked in.
pos - position into the modela - the allocated region to render intodirection - one of the following values:
SwingConstants.NORTH
SwingConstants.SOUTH
biasRet - an array containing the bias that were checked
in this methodrowIndex - the index of the viewx - the x coordinate of interest
x
BadLocationExceptionprotected boolean flipEastAndWestAtEnds(int position, javax.swing.text.Position.Bias bias)
View at index n.
Typically the Views are layed out
from left to right, so that the View
to the EAST will be at index n + 1, and the
View to the WEST will be at index n - 1.
In certain situations, such as with bidirectional text,
it is possible that the View to EAST is not
at index n + 1, but rather at index n - 1,
or that the View to the WEST is not at
index n - 1, but index n + 1. In this case this method
would return true, indicating the Views are
layed out in descending order.
This will return true if the text is layed out right to left at position, otherwise false.
flipEastAndWestAtEnds in class BoxViewposition - position into the modelbias - either Position.Bias.Forward or
Position.Bias.Backward
public int getFlowSpan(int index)
getFlowSpan in class FlowViewindex - the index of the view being queried
indexFlowView.getFlowStart(int)public int getFlowStart(int index)
getFlowStart in class FlowViewindex - the index of the view being queried
indexFlowView.getFlowSpan(int)protected View createRow()
View that should be used to hold a
a row's worth of children in a flow.
Viewpublic float nextTabStop(float x, int tabOffset)
getTabbedSpan on the logical children in the process
of layout to determine the desired span of the children. The
logical children can delegate their tab expansion upward to
the paragraph which knows how to expand tabs.
LabelView is an example of a view that delegates
its tab expansion needs upward to the paragraph.
This is implemented to try and locate a TabSet
in the paragraph element's attribute set. If one can be
found, its settings will be used, otherwise a default expansion
will be provided. The base location for for tab expansion
is the left inset from the paragraphs most recent allocation
(which is what the layout of the children is based upon).
nextTabStop in interface TabExpanderprotected TabSet getTabSet()
Tabset to be used in calculating tabs.
TabSetprotected float getPartialSize(int startOffset, int endOffset)
startOffset and endOffset.
This uses getPartialView to calculate the
size if the child view implements the
TabableView interface. If a
size is needed and a View does not implement
the TabableView interface,
the preferredSpan will be used.
startOffset - the starting document offset>= 0endOffset - the ending document offset>= startOffset
protected int findOffsetToCharactersInString(char[] string, int start)
string, starting at offset start. If
there are no characters found, -1 will be returned.
string - the string of charactersstart - where to start in the model>= 0
protected float getTabBase()
public void paint(Graphics g, Shape a)
g - the rendering surface to usea - the allocated region to render intoView.paint(java.awt.Graphics, java.awt.Shape)public float getAlignment(int axis)
getAlignment in class BoxViewaxis - may be either View.X_AXIS or
View.Y_AXIS
public View breakView(int axis, float len, Shape a)
ParagraphView instances are breakable
along the Y_AXIS only, and only if
len is after the first line.
axis - may be either View.X_AXIS
or View.Y_AXISlen - specifies where a potential break is desired
along the given axis>= 0a - the current allocation of the view
View.breakView(int, int, float, float)public int getBreakWeight(int axis, float len)
ParagraphView instances are breakable
along the Y_AXIS only, and only if
len is after the first row. If the length
is less than one row, a value of BadBreakWeight
is returned.
axis - may be either View.X_AXIS
or View.Y_AXISlen - specifies where a potential break is desired>= 0
GoodBreakWeight or BadBreakWeightView.getBreakWeight(int, float, float)public void changedUpdate(DocumentEvent changes, Shape a, ViewFactory f)
changedUpdate in class FlowViewchanges - the change information from the
associated documenta - the current allocation of the viewf - the factory to use to rebuild if the view has childrenView.changedUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)