android.text
public
class
android.text.DynamicLayout
DynamicLayout is a text layout that updates itself as the text is edited.
This is used by widgets to control text layout. You should not need
to use this class directly unless you are implementing your own widget
or custom display object, or need to call
Canvas.drawText() directly.
Summary
Public Constructors
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DynamicLayout(CharSequence base, TextPaint paint, int width, Layout.Alignment align, float spacingmult, float spacingadd, boolean includepad) |
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DynamicLayout(CharSequence base, CharSequence display, TextPaint paint, int width, Layout.Alignment align, float spacingmult, float spacingadd, boolean includepad) |
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DynamicLayout(CharSequence base, CharSequence display, TextPaint paint, int width, Layout.Alignment align, float spacingmult, float spacingadd, boolean includepad, TextUtils.TruncateAt ellipsize, int ellipsizedWidth) |
Public Methods
draw,
draw,
getAlignment,
getBottomPadding,
getCursorPath,
getDesiredWidth,
getDesiredWidth,
getEllipsisCount,
getEllipsisStart,
getEllipsizedWidth,
getHeight,
getLineAscent,
getLineBaseline,
getLineBottom,
getLineBounds,
getLineContainsTab,
getLineCount,
getLineDescent,
getLineDirections,
getLineEnd,
getLineForOffset,
getLineForVertical,
getLineLeft,
getLineMax,
getLineRight,
getLineStart,
getLineTop,
getLineVisibleEnd,
getLineWidth,
getOffsetForHorizontal,
getOffsetToLeftOf,
getOffsetToRightOf,
getPaint,
getParagraphAlignment,
getParagraphDirection,
getParagraphLeft,
getParagraphRight,
getPrimaryHorizontal,
getSecondaryHorizontal,
getSelectionPath,
getSpacingAdd,
getSpacingMultiplier,
getText,
getTopPadding,
getWidth,
increaseWidthTo,
isSpanned
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void |
draw(Canvas c) |
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void |
draw(Canvas c, Path highlight, Paint highlightpaint, int cursorOffsetVertical) |
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final |
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Layout.Alignment |
getAlignment() |
abstract |
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int |
getBottomPadding() |
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void |
getCursorPath(int point, Path dest, CharSequence editingBuffer) |
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static |
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float |
getDesiredWidth(CharSequence source, int start, int end, TextPaint paint) |
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static |
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float |
getDesiredWidth(CharSequence source, TextPaint paint) |
abstract |
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int |
getEllipsisCount(int line) |
abstract |
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int |
getEllipsisStart(int line) |
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int |
getEllipsizedWidth() |
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int |
getHeight() |
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final |
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int |
getLineAscent(int line) |
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final |
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int |
getLineBaseline(int line) |
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final |
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int |
getLineBottom(int line) |
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int |
getLineBounds(int line, Rect bounds) |
abstract |
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boolean |
getLineContainsTab(int line) |
abstract |
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int |
getLineCount() |
abstract |
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int |
getLineDescent(int line) |
abstract |
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Layout.Directions |
getLineDirections(int line) |
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final |
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int |
getLineEnd(int line) |
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int |
getLineForOffset(int offset) |
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int |
getLineForVertical(int vertical) |
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float |
getLineLeft(int line) |
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float |
getLineMax(int line) |
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float |
getLineRight(int line) |
abstract |
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int |
getLineStart(int line) |
abstract |
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int |
getLineTop(int line) |
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int |
getLineVisibleEnd(int line) |
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float |
getLineWidth(int line) |
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int |
getOffsetForHorizontal(int line, float horiz) |
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int |
getOffsetToLeftOf(int offset) |
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int |
getOffsetToRightOf(int offset) |
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final |
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TextPaint |
getPaint() |
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final |
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Layout.Alignment |
getParagraphAlignment(int line) |
abstract |
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int |
getParagraphDirection(int line) |
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final |
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int |
getParagraphLeft(int line) |
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final |
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int |
getParagraphRight(int line) |
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float |
getPrimaryHorizontal(int offset) |
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float |
getSecondaryHorizontal(int offset) |
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void |
getSelectionPath(int start, int end, Path dest) |
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final |
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float |
getSpacingAdd() |
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final |
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float |
getSpacingMultiplier() |
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final |
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CharSequence |
getText() |
abstract |
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int |
getTopPadding() |
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final |
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int |
getWidth() |
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final |
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void |
increaseWidthTo(int wid) |
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final |
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boolean |
isSpanned() |
clone,
equals,
finalize,
getClass,
hashCode,
notify,
notifyAll,
toString,
wait,
wait,
wait
Details
Public Constructors
public
DynamicLayout(CharSequence base, TextPaint paint, int width, Layout.Alignment align, float spacingmult, float spacingadd, boolean includepad)
Make a layout for the specified text that will be updated as
the text is changed.
public
DynamicLayout(CharSequence base, CharSequence display, TextPaint paint, int width, Layout.Alignment align, float spacingmult, float spacingadd, boolean includepad)
Make a layout for the transformed text (password transformation
being the primary example of a transformation)
that will be updated as the base text is changed.
public
DynamicLayout(CharSequence base, CharSequence display, TextPaint paint, int width, Layout.Alignment align, float spacingmult, float spacingadd, boolean includepad, TextUtils.TruncateAt ellipsize, int ellipsizedWidth)
Make a layout for the transformed text (password transformation
being the primary example of a transformation)
that will be updated as the base text is changed.
If ellipsize is non-null, the Layout will ellipsize the text
down to ellipsizedWidth.
Public Methods
public
int
getBottomPadding()
Returns the number of extra pixels of descent padding in the
bottom line of the Layout.
public
int
getEllipsisCount(int line)
Returns the number of characters to be ellipsized away, or 0 if
no ellipsis is to take place.
public
int
getEllipsisStart(int line)
Return the offset of the first character to be ellipsized away,
relative to the start of the line. (So 0 if the beginning of the
line is ellipsized, not getLineStart().)
public
int
getEllipsizedWidth()
Return the width to which this Layout is ellipsizing, or
getWidth() if it is not doing anything special.
public
boolean
getLineContainsTab(int line)
Returns whether the specified line contains one or more tabs.
public
int
getLineCount()
Return the number of lines of text in this layout.
public
int
getLineDescent(int line)
Return the descent of the specified line.
public
final
Layout.Directions
getLineDirections(int line)
Returns an array of directionalities for the specified line.
The array alternates counts of characters in left-to-right
and right-to-left segments of the line.
public
int
getLineStart(int line)
Return the text offset of the beginning of the specified line.
If the specified line is one beyond the last line, returns the
end of the last line.
public
int
getLineTop(int line)
Return the vertical position of the top of the specified line.
If the specified line is one beyond the last line, returns the
bottom of the last line.
public
int
getParagraphDirection(int line)
Returns the primary directionality of the paragraph containing
the specified line.
public
int
getTopPadding()
Returns the (negative) number of extra pixels of ascent padding in the
top line of the Layout.