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JavaTM 2 Platform Std. Ed. v1.3 |
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java.lang.Object | +--javax.swing.text.View | +--javax.swing.text.PlainView
Implements View interface for a simple multi-line text view that has text in one font and color. The view represents each child element as a line of text.
View
Field Summary | |
protected FontMetrics |
metrics
Font metrics for the currrent font. |
Fields inherited from class javax.swing.text.View |
BadBreakWeight, ExcellentBreakWeight, ForcedBreakWeight, GoodBreakWeight, X_AXIS, Y_AXIS |
Fields inherited from interface javax.swing.SwingConstants |
BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NORTH, NORTH_EAST, NORTH_WEST, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST |
Constructor Summary | |
PlainView(Element elem)
Constructs a new PlainView wrapped on an element. |
Method Summary | |
void |
changedUpdate(DocumentEvent changes,
Shape a,
ViewFactory f)
Gives notification from the document that attributes were changed in a location that this view is responsible for. |
protected void |
drawLine(int lineIndex,
Graphics g,
int x,
int y)
Renders a line of text, suppressing whitespace at the end and exanding any tabs. |
protected int |
drawSelectedText(Graphics g,
int x,
int y,
int p0,
int p1)
Renders the given range in the model as selected text. |
protected int |
drawUnselectedText(Graphics g,
int x,
int y,
int p0,
int p1)
Renders the given range in the model as normal unselected text. |
protected Segment |
getLineBuffer()
Gives access to a buffer that can be used to fetch text from the associated document. |
float |
getPreferredSpan(int axis)
Determines the preferred span for this view along an axis. |
protected int |
getTabSize()
Returns the tab size set for the document, defaulting to 8. |
void |
insertUpdate(DocumentEvent changes,
Shape a,
ViewFactory f)
Gives notification that something was inserted into the document in a location that this view is responsible for. |
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. |
float |
nextTabStop(float x,
int tabOffset)
Returns the next tab stop position after a given reference position. |
void |
paint(Graphics g,
Shape a)
Renders using the given rendering surface and area on that surface. |
void |
removeUpdate(DocumentEvent changes,
Shape a,
ViewFactory f)
Gives notification that something was removed from the document in a location that this view is responsible for. |
int |
viewToModel(float fx,
float fy,
Shape a,
Position.Bias[] bias)
Provides a mapping from the view coordinate space to the logical coordinate space of the model. |
Methods inherited from class javax.swing.text.View |
append, breakView, createFragment, forwardUpdate, forwardUpdateToView, getAlignment, getAttributes, getBreakWeight, getChildAllocation, getContainer, getDocument, getElement, getEndOffset, getGraphics, getMaximumSpan, getMinimumSpan, getNextVisualPositionFrom, getParent, getResizeWeight, getStartOffset, getView, getViewCount, getViewFactory, getViewIndex, insert, isVisible, modelToView, modelToView, preferenceChanged, remove, removeAll, replace, setParent, setSize, updateChildren, updateLayout, viewToModel |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
protected FontMetrics metrics
Constructor Detail |
public PlainView(Element elem)
elem
- the elementMethod Detail |
protected int getTabSize()
protected void drawLine(int lineIndex, Graphics g, int x, int y)
drawUnselectedText
and
drawSelectedText
so that the way selected and
unselected text are rendered can be customized.lineIndex
- the line to draw >= 0g
- the graphics contextx
- the starting X position >= 0y
- the starting Y position >= 0drawUnselectedText(java.awt.Graphics, int, int, int, int)
,
drawSelectedText(java.awt.Graphics, int, int, int, int)
protected int drawUnselectedText(Graphics g, int x, int y, int p0, int p1) throws BadLocationException
g
- the graphics contextx
- the starting X coordinate >= 0y
- the starting Y coordinate >= 0p0
- the beginning position in the model >= 0p1
- the ending position in the model >= 0BadLocationException
- if the range is invalidprotected int drawSelectedText(Graphics g, int x, int y, int p0, int p1) throws BadLocationException
g
- the graphics contextx
- the starting X coordinate >= 0y
- the starting Y coordinate >= 0p0
- the beginning position in the model >= 0p1
- the ending position in the model >= 0BadLocationException
- if the range is invalidprotected final Segment getLineBuffer()
public float getPreferredSpan(int axis)
getPreferredSpan
in class View
axis
- may be either View.X_AXIS or View.Y_AXISIllegalArgumentException
- for an invalid axispublic void paint(Graphics g, Shape a)
paint
in class View
g
- the rendering surface to usea
- the allocated region to render intoView.paint(java.awt.Graphics, java.awt.Shape)
public Shape modelToView(int pos, Shape a, Position.Bias b) throws BadLocationException
modelToView
in class View
pos
- the position to convert >= 0a
- the allocated region to render intoBadLocationException
- if the given position does not
represent a valid location in the associated documentView.modelToView(int, java.awt.Shape, javax.swing.text.Position.Bias)
public int viewToModel(float fx, float fy, Shape a, Position.Bias[] bias)
viewToModel
in class View
fx
- the X coordinate >= 0fy
- the Y coordinate >= 0a
- the allocated region to render intoView.viewToModel(float, float, java.awt.Shape, javax.swing.text.Position.Bias[])
public void insertUpdate(DocumentEvent changes, Shape a, ViewFactory f)
insertUpdate
in class View
changes
- the change information from the associated documenta
- the current allocation of the viewf
- the factory to use to rebuild if the view has childrenView.insertUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)
public void removeUpdate(DocumentEvent changes, Shape a, ViewFactory f)
removeUpdate
in class View
changes
- the change information from the associated documenta
- the current allocation of the viewf
- the factory to use to rebuild if the view has childrenView.removeUpdate(javax.swing.event.DocumentEvent, java.awt.Shape, javax.swing.text.ViewFactory)
public void changedUpdate(DocumentEvent changes, Shape a, ViewFactory f)
changedUpdate
in class View
changes
- 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)
public float nextTabStop(float x, int tabOffset)
nextTabStop
in interface TabExpander
x
- the current position >= 0tabOffset
- the position within the text stream
that the tab occurred at >= 0.
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JavaTM 2 Platform Std. Ed. v1.3 |
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