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public
class
Paint
extends Object
java.lang.Object | |
↳ | android.graphics.Paint |
The Paint class holds the style and color information about how to draw geometries, text and bitmaps.
Nested classes | |
---|---|
enum |
Paint.Align
Align specifies how drawText aligns its text relative to the [x,y] coordinates. |
enum |
Paint.Cap
The Cap specifies the treatment for the beginning and ending of stroked lines and paths. |
class |
Paint.FontMetrics
Class that describes the various metrics for a font at a given text size. |
class |
Paint.FontMetricsInt
Convenience method for callers that want to have FontMetrics values as integers. |
enum |
Paint.Join
The Join specifies the treatment where lines and curve segments join on a stroked path. |
enum |
Paint.Style
The Style specifies if the primitive being drawn is filled, stroked, or both (in the same color). |
Constants | |
---|---|
int |
ANTI_ALIAS_FLAG
Paint flag that enables antialiasing when drawing. |
int |
CURSOR_AFTER
Option for getTextRunCursor. |
int |
CURSOR_AT
Option for getTextRunCursor. |
int |
CURSOR_AT_OR_AFTER
Option for getTextRunCursor. |
int |
CURSOR_AT_OR_BEFORE
Option for getTextRunCursor. |
int |
CURSOR_BEFORE
Option for getTextRunCursor. |
int |
DEV_KERN_TEXT_FLAG
Legacy Paint flag, no longer used. |
int |
DITHER_FLAG
Paint flag that enables dithering when blitting. |
int |
EMBEDDED_BITMAP_TEXT_FLAG
Paint flag that enables the use of bitmap fonts when drawing text. |
int |
END_HYPHEN_EDIT_INSERT_ARMENIAN_HYPHEN
An integer representing the end of the line has Armentian hyphen (U+058A). |
int |
END_HYPHEN_EDIT_INSERT_HYPHEN
An integer representing the end of the line has normal hyphen character (U+002D). |
int |
END_HYPHEN_EDIT_INSERT_MAQAF
An integer representing the end of the line has maqaf (Hebrew hyphen, U+05BE). |
int |
END_HYPHEN_EDIT_INSERT_UCAS_HYPHEN
An integer representing the end of the line has Canadian Syllabics hyphen (U+1400). |
int |
END_HYPHEN_EDIT_INSERT_ZWJ_AND_HYPHEN
An integer representing the end of the line has Zero-Width-Joiner (U+200D) followed by normal hyphen character (U+002D). |
int |
END_HYPHEN_EDIT_NO_EDIT
An integer representing the end of the line has no modification for hyphenation. |
int |
END_HYPHEN_EDIT_REPLACE_WITH_HYPHEN
An integer representing the character at the end of the line is replaced with hyphen character (U+002D). |
int |
FAKE_BOLD_TEXT_FLAG
Paint flag that applies a synthetic bolding effect to drawn text. |
int |
FILTER_BITMAP_FLAG
Paint flag that enables bilinear sampling on scaled bitmaps. |
int |
HINTING_OFF
Font hinter option that disables font hinting. |
int |
HINTING_ON
Font hinter option that enables font hinting. |
int |
LINEAR_TEXT_FLAG
Paint flag that enables smooth linear scaling of text. |
int |
START_HYPHEN_EDIT_INSERT_HYPHEN
An integer representing the starting of the line has normal hyphen character (U+002D). |
int |
START_HYPHEN_EDIT_INSERT_ZWJ
An integer representing the starting of the line has Zero-Width-Joiner (U+200D). |
int |
START_HYPHEN_EDIT_NO_EDIT
An integer representing the starting of the line has no modification for hyphenation. |
int |
STRIKE_THRU_TEXT_FLAG
Paint flag that applies a strike-through decoration to drawn text. |
int |
SUBPIXEL_TEXT_FLAG
Paint flag that enables subpixel positioning of text. |
int |
UNDERLINE_TEXT_FLAG
Paint flag that applies an underline decoration to drawn text. |
Public constructors | |
---|---|
Paint()
Create a new paint with default settings. |
|
Paint(int flags)
Create a new paint with the specified flags. |
|
Paint(Paint paint)
Create a new paint, initialized with the attributes in the specified paint parameter. |
Public methods | |
---|---|
float
|
ascent()
Return the distance above (negative) the baseline (ascent) based on the current typeface and text size. |
int
|
breakText(char[] text, int index, int count, float maxWidth, float[] measuredWidth)
Measure the text, stopping early if the measured width exceeds maxWidth. |
int
|
breakText(String text, boolean measureForwards, float maxWidth, float[] measuredWidth)
Measure the text, stopping early if the measured width exceeds maxWidth. |
int
|
breakText(CharSequence text, int start, int end, boolean measureForwards, float maxWidth, float[] measuredWidth)
Measure the text, stopping early if the measured width exceeds maxWidth. |
void
|
clearShadowLayer()
Clear the shadow layer. |
float
|
descent()
Return the distance below (positive) the baseline (descent) based on the current typeface and text size. |
boolean
|
equalsForTextMeasurement(Paint other)
Returns true of the passed |
int
|
getAlpha()
Helper to getColor() that just returns the color's alpha value. |
BlendMode
|
getBlendMode()
Get the paint's blend mode object. |
int
|
getColor()
Return the paint's color in sRGB. |
ColorFilter
|
getColorFilter()
Get the paint's colorfilter (maybe be null). |
long
|
getColorLong()
Return the paint's color. |
int
|
getEndHyphenEdit()
Get the current value of end hyphen edit. |
boolean
|
getFillPath(Path src, Path dst)
Applies any/all effects (patheffect, stroking) to src, returning the result in dst. |
int
|
getFlags()
Return the paint's flags. |
String
|
getFontFeatureSettings()
Returns the font feature settings. |
float
|
getFontMetrics(Paint.FontMetrics metrics)
Return the font's recommended interline spacing, given the Paint's settings for typeface, textSize, etc. |
Paint.FontMetrics
|
getFontMetrics()
Allocates a new FontMetrics object, and then calls getFontMetrics(fm) with it, returning the object. |
int
|
getFontMetricsInt(Paint.FontMetricsInt fmi)
Return the font's interline spacing, given the Paint's settings for typeface, textSize, etc. |
Paint.FontMetricsInt
|
getFontMetricsInt()
|
float
|
getFontSpacing()
Return the recommend line spacing based on the current typeface and text size. |
String
|
getFontVariationSettings()
Returns the font variation settings. |
int
|
getHinting()
Return the paint's hinting mode. |
float
|
getLetterSpacing()
Return the paint's letter-spacing for text. |
MaskFilter
|
getMaskFilter()
Get the paint's maskfilter object. |
int
|
getOffsetForAdvance(char[] text, int start, int end, int contextStart, int contextEnd, boolean isRtl, float advance)
Get the character offset within the string whose position is closest to the specified horizontal position. |
int
|
getOffsetForAdvance(CharSequence text, int start, int end, int contextStart, int contextEnd, boolean isRtl, float advance)
|
PathEffect
|
getPathEffect()
Get the paint's patheffect object. |
float
|
getRunAdvance(char[] text, int start, int end, int contextStart, int contextEnd, boolean isRtl, int offset)
Measure cursor position within a run of text. |
float
|
getRunAdvance(CharSequence text, int start, int end, int contextStart, int contextEnd, boolean isRtl, int offset)
|
Shader
|
getShader()
Get the paint's shader object. |
int
|
getShadowLayerColor()
Returns the color of the shadow layer. |
long
|
getShadowLayerColorLong()
Returns the color of the shadow layer. |
float
|
getShadowLayerDx()
Returns the x offset of the shadow layer. |
float
|
getShadowLayerDy()
Returns the y offset of the shadow layer. |
float
|
getShadowLayerRadius()
Returns the blur radius of the shadow layer. |
int
|
getStartHyphenEdit()
Get the current value of start hyphen edit. |
float
|
getStrikeThruPosition()
Distance from top of the strike-through line to the baseline in pixels. |
float
|
getStrikeThruThickness()
Returns the thickness of the strike-through line in pixels. |
Paint.Cap
|
getStrokeCap()
Return the paint's Cap, controlling how the start and end of stroked lines and paths are treated. |
Paint.Join
|
getStrokeJoin()
Return the paint's stroke join type. |
float
|
getStrokeMiter()
Return the paint's stroke miter value. |
float
|
getStrokeWidth()
Return the width for stroking. |
Paint.Style
|
getStyle()
Return the paint's style, used for controlling how primitives' geometries are interpreted (except for drawBitmap, which always assumes FILL_STYLE). |
Paint.Align
|
getTextAlign()
Return the paint's Align value for drawing text. |
void
|
getTextBounds(String text, int start, int end, Rect bounds)
Retrieve the text boundary box and store to bounds. |
void
|
getTextBounds(CharSequence text, int start, int end, Rect bounds)
Retrieve the text boundary box and store to bounds. |
void
|
getTextBounds(char[] text, int index, int count, Rect bounds)
Return in bounds (allocated by the caller) the smallest rectangle that encloses all of the characters, with an implied origin at (0,0). |
Locale
|
getTextLocale()
Get the text's primary Locale. |
LocaleList
|
getTextLocales()
Get the text locale list. |
void
|
getTextPath(char[] text, int index, int count, float x, float y, Path path)
Return the path (outline) for the specified text. |
void
|
getTextPath(String text, int start, int end, float x, float y, Path path)
Return the path (outline) for the specified text. |
float
|
getTextRunAdvances(char[] chars, int index, int count, int contextIndex, int contextCount, boolean isRtl, float[] advances, int advancesIndex)
Retrieve the character advances of the text. |
int
|
getTextRunCursor(CharSequence text, int contextStart, int contextEnd, boolean isRtl, int offset, int cursorOpt)
Returns the next cursor position in the run. |
int
|
getTextRunCursor(char[] text, int contextStart, int contextLength, boolean isRtl, int offset, int cursorOpt)
Returns the next cursor position in the run. |
float
|
getTextScaleX()
Return the paint's horizontal scale factor for text. |
float
|
getTextSize()
Return the paint's text size. |
float
|
getTextSkewX()
Return the paint's horizontal skew factor for text. |
int
|
getTextWidths(char[] text, int index, int count, float[] widths)
Return the advance widths for the characters in the string. |
int
|
getTextWidths(String text, float[] widths)
Return the advance widths for the characters in the string. |
int
|
getTextWidths(String text, int start, int end, float[] widths)
Return the advance widths for the characters in the string. |
int
|
getTextWidths(CharSequence text, int start, int end, float[] widths)
Return the advance widths for the characters in the string. |
Typeface
|
getTypeface()
Get the paint's typeface object. |
float
|
getUnderlinePosition()
Returns the distance from top of the underline to the baseline in pixels. |
float
|
getUnderlineThickness()
Returns the thickness of the underline in pixels. |
float
|
getWordSpacing()
Return the paint's extra word-spacing for text. |
Xfermode
|
getXfermode()
Get the paint's transfer mode object. |
boolean
|
hasGlyph(String string)
Determine whether the typeface set on the paint has a glyph supporting the string. |
final
boolean
|
isAntiAlias()
Helper for getFlags(), returning true if ANTI_ALIAS_FLAG bit is set AntiAliasing smooths out the edges of what is being drawn, but is has no impact on the interior of the shape. |
final
boolean
|
isDither()
Helper for getFlags(), returning true if DITHER_FLAG bit is set Dithering affects how colors that are higher precision than the device are down-sampled. |
boolean
|
isElegantTextHeight()
Get the elegant metrics flag. |
final
boolean
|
isFakeBoldText()
Helper for getFlags(), returning true if FAKE_BOLD_TEXT_FLAG bit is set |
final
boolean
|
isFilterBitmap()
Whether or not the bitmap filter is activated. |
final
boolean
|
isLinearText()
Helper for getFlags(), returning true if LINEAR_TEXT_FLAG bit is set |
final
boolean
|
isStrikeThruText()
Helper for getFlags(), returning true if STRIKE_THRU_TEXT_FLAG bit is set |
final
boolean
|
isSubpixelText()
Helper for getFlags(), returning true if SUBPIXEL_TEXT_FLAG bit is set |
final
boolean
|
isUnderlineText()
Helper for getFlags(), returning true if UNDERLINE_TEXT_FLAG bit is set |
float
|
measureText(char[] text, int index, int count)
Return the width of the text. |
float
|
measureText(CharSequence text, int start, int end)
Return the width of the text. |
float
|
measureText(String text, int start, int end)
Return the width of the text. |
float
|
measureText(String text)
Return the width of the text. |
void
|
reset()
Restores the paint to its default settings. |
void
|
set(Paint src)
Copy the fields from src into this paint. |
void
|
setARGB(int a, int r, int g, int b)
Helper to setColor(), that takes a,r,g,b and constructs the color int |
void
|
setAlpha(int a)
Helper to setColor(), that only assigns the color's alpha value, leaving its r,g,b values unchanged. |
void
|
setAntiAlias(boolean aa)
Helper for setFlags(), setting or clearing the ANTI_ALIAS_FLAG bit AntiAliasing smooths out the edges of what is being drawn, but is has no impact on the interior of the shape. |
void
|
setBlendMode(BlendMode blendmode)
Set or clear the blend mode. |
void
|
setColor(long color)
Set the paint's color with a |
void
|
setColor(int color)
Set the paint's color. |
ColorFilter
|
setColorFilter(ColorFilter filter)
Set or clear the paint's colorfilter, returning the parameter. |
void
|
setDither(boolean dither)
Helper for setFlags(), setting or clearing the DITHER_FLAG bit Dithering affects how colors that are higher precision than the device are down-sampled. |
void
|
setElegantTextHeight(boolean elegant)
Set the paint's elegant height metrics flag. |
void
|
setEndHyphenEdit(int endHyphen)
Set a end hyphen edit on the paint. |
void
|
setFakeBoldText(boolean fakeBoldText)
Helper for setFlags(), setting or clearing the FAKE_BOLD_TEXT_FLAG bit |
void
|
setFilterBitmap(boolean filter)
Helper for setFlags(), setting or clearing the FILTER_BITMAP_FLAG bit. |
void
|
setFlags(int flags)
Set the paint's flags. |
void
|
setFontFeatureSettings(String settings)
Set font feature settings. |
boolean
|
setFontVariationSettings(String fontVariationSettings)
Sets TrueType or OpenType font variation settings. |
void
|
setHinting(int mode)
Set the paint's hinting mode. |
void
|
setLetterSpacing(float letterSpacing)
Set the paint's letter-spacing for text. |
void
|
setLinearText(boolean linearText)
Helper for setFlags(), setting or clearing the LINEAR_TEXT_FLAG bit |
MaskFilter
|
setMaskFilter(MaskFilter maskfilter)
Set or clear the maskfilter object. |
PathEffect
|
setPathEffect(PathEffect effect)
Set or clear the patheffect object. |
Shader
|
setShader(Shader shader)
Set or clear the shader object. |
void
|
setShadowLayer(float radius, float dx, float dy, int shadowColor)
This draws a shadow layer below the main layer, with the specified offset and color, and blur radius. |
void
|
setShadowLayer(float radius, float dx, float dy, long shadowColor)
This draws a shadow layer below the main layer, with the specified offset and color, and blur radius. |
void
|
setStartHyphenEdit(int startHyphen)
Set a start hyphen edit on the paint. |
void
|
setStrikeThruText(boolean strikeThruText)
Helper for setFlags(), setting or clearing the STRIKE_THRU_TEXT_FLAG bit |
void
|
setStrokeCap(Paint.Cap cap)
Set the paint's Cap. |
void
|
setStrokeJoin(Paint.Join join)
Set the paint's Join. |
void
|
setStrokeMiter(float miter)
Set the paint's stroke miter value. |
void
|
setStrokeWidth(float width)
Set the width for stroking. |
void
|
setStyle(Paint.Style style)
Set the paint's style, used for controlling how primitives' geometries are interpreted (except for drawBitmap, which always assumes Fill). |
void
|
setSubpixelText(boolean subpixelText)
Helper for setFlags(), setting or clearing the SUBPIXEL_TEXT_FLAG bit |
void
|
setTextAlign(Paint.Align align)
Set the paint's text alignment. |
void
|
setTextLocale(Locale locale)
Set the text locale list to a one-member list consisting of just the locale. |
void
|
setTextLocales(LocaleList locales)
Set the text locale list. |
void
|
setTextScaleX(float scaleX)
Set the paint's horizontal scale factor for text. |
void
|
setTextSize(float textSize)
Set the paint's text size. |
void
|
setTextSkewX(float skewX)
Set the paint's horizontal skew factor for text. |
Typeface
|
setTypeface(Typeface typeface)
Set or clear the typeface object. |
void
|
setUnderlineText(boolean underlineText)
Helper for setFlags(), setting or clearing the UNDERLINE_TEXT_FLAG bit |
void
|
setWordSpacing(float wordSpacing)
Set the paint's extra word-spacing for text. |
Xfermode
|
setXfermode(Xfermode xfermode)
Set or clear the transfer mode object. |
Inherited methods | |
---|---|
public static final int ANTI_ALIAS_FLAG
Paint flag that enables antialiasing when drawing.
Enabling this flag will cause all draw operations that support antialiasing to use it.
See also:
Constant Value: 1 (0x00000001)
public static final int CURSOR_AFTER
Option for getTextRunCursor. Compute the valid cursor after offset or the limit of the context, whichever is less.
Constant Value: 0 (0x00000000)
public static final int CURSOR_AT
Option for getTextRunCursor. Return offset if the cursor at offset is valid, or -1 if it isn't.
Constant Value: 4 (0x00000004)
public static final int CURSOR_AT_OR_AFTER
Option for getTextRunCursor. Compute the valid cursor at or after the offset or the limit of the context, whichever is less.
Constant Value: 1 (0x00000001)
public static final int CURSOR_AT_OR_BEFORE
Option for getTextRunCursor. Compute the valid cursor at or before offset or the start of the context, whichever is greater.
Constant Value: 3 (0x00000003)
public static final int CURSOR_BEFORE
Option for getTextRunCursor. Compute the valid cursor before offset or the start of the context, whichever is greater.
Constant Value: 2 (0x00000002)
public static final int DEV_KERN_TEXT_FLAG
Legacy Paint flag, no longer used.
Constant Value: 256 (0x00000100)
public static final int DITHER_FLAG
Paint flag that enables dithering when blitting.
Enabling this flag applies a dither to any blit operation where the target's colour space is more constrained than the source.
See also:
Constant Value: 4 (0x00000004)
public static final int EMBEDDED_BITMAP_TEXT_FLAG
Paint flag that enables the use of bitmap fonts when drawing text.
Disabling this flag will prevent text draw operations from using embedded bitmap strikes in fonts, causing fonts with both scalable outlines and bitmap strikes to draw only the scalable outlines, and fonts with only bitmap strikes to not draw at all.
See also:
Constant Value: 1024 (0x00000400)
public static final int END_HYPHEN_EDIT_INSERT_ARMENIAN_HYPHEN
An integer representing the end of the line has Armentian hyphen (U+058A).
Constant Value: 3 (0x00000003)
public static final int END_HYPHEN_EDIT_INSERT_HYPHEN
An integer representing the end of the line has normal hyphen character (U+002D).
Constant Value: 2 (0x00000002)
public static final int END_HYPHEN_EDIT_INSERT_MAQAF
An integer representing the end of the line has maqaf (Hebrew hyphen, U+05BE).
Constant Value: 4 (0x00000004)
public static final int END_HYPHEN_EDIT_INSERT_UCAS_HYPHEN
An integer representing the end of the line has Canadian Syllabics hyphen (U+1400).
Constant Value: 5 (0x00000005)
public static final int END_HYPHEN_EDIT_INSERT_ZWJ_AND_HYPHEN
An integer representing the end of the line has Zero-Width-Joiner (U+200D) followed by normal hyphen character (U+002D).
Constant Value: 6 (0x00000006)
public static final int END_HYPHEN_EDIT_NO_EDIT
An integer representing the end of the line has no modification for hyphenation.
Constant Value: 0 (0x00000000)
public static final int END_HYPHEN_EDIT_REPLACE_WITH_HYPHEN
An integer representing the character at the end of the line is replaced with hyphen character (U+002D).
Constant Value: 1 (0x00000001)
public static final int FAKE_BOLD_TEXT_FLAG
Paint flag that applies a synthetic bolding effect to drawn text.
Enabling this flag will cause text draw operations to apply a
simulated bold effect when drawing a Typeface
that is not
already bold.
See also:
Constant Value: 32 (0x00000020)
public static final int FILTER_BITMAP_FLAG
Paint flag that enables bilinear sampling on scaled bitmaps.
If cleared, scaled bitmaps will be drawn with nearest neighbor sampling, likely resulting in artifacts. This should generally be on when drawing bitmaps, unless performance-bound (rendering to software canvas) or preferring pixelation artifacts to blurriness when scaling significantly.
If bitmaps are scaled for device density at creation time (as resource bitmaps often are) the filtering will already have been done.
On devices running Build.VERSION_CODES#O
and below, hardware
accelerated drawing always uses bilinear sampling on scaled bitmaps,
regardless of this flag. On devices running Build.VERSION_CODES#Q
and above, this flag defaults to being set on a new Paint
. It can
be cleared with setFlags(int)
or setFilterBitmap(boolean)
.
See also:
Constant Value: 2 (0x00000002)
public static final int HINTING_OFF
Font hinter option that disables font hinting.
See also:
Constant Value: 0 (0x00000000)
public static final int HINTING_ON
Font hinter option that enables font hinting.
See also:
Constant Value: 1 (0x00000001)
public static final int LINEAR_TEXT_FLAG
Paint flag that enables smooth linear scaling of text.
Enabling this flag does not actually scale text, but rather adjusts text draw operations to deal gracefully with smooth adjustment of scale. When this flag is enabled, font hinting is disabled to prevent shape deformation between scale factors, and glyph caching is disabled due to the large number of glyph images that will be generated.
SUBPIXEL_TEXT_FLAG
should be used in conjunction with this
flag to prevent glyph positions from snapping to whole pixel values as
scale factor is adjusted.
See also:
Constant Value: 64 (0x00000040)
public static final int START_HYPHEN_EDIT_INSERT_HYPHEN
An integer representing the starting of the line has normal hyphen character (U+002D).
Constant Value: 1 (0x00000001)
public static final int START_HYPHEN_EDIT_INSERT_ZWJ
An integer representing the starting of the line has Zero-Width-Joiner (U+200D).
Constant Value: 2 (0x00000002)
public static final int START_HYPHEN_EDIT_NO_EDIT
An integer representing the starting of the line has no modification for hyphenation.
Constant Value: 0 (0x00000000)
public static final int STRIKE_THRU_TEXT_FLAG
Paint flag that applies a strike-through decoration to drawn text.
See also:
Constant Value: 16 (0x00000010)
public static final int SUBPIXEL_TEXT_FLAG
Paint flag that enables subpixel positioning of text.
Enabling this flag causes glyph advances to be computed with subpixel accuracy.
This can be used with LINEAR_TEXT_FLAG
to prevent text from
jittering during smooth scale transitions.
See also:
Constant Value: 128 (0x00000080)
public static final int UNDERLINE_TEXT_FLAG
Paint flag that applies an underline decoration to drawn text.
See also:
Constant Value: 8 (0x00000008)
public Paint ()
Create a new paint with default settings.
On devices running Build.VERSION_CODES#O
and below, hardware
accelerated drawing always acts as if FILTER_BITMAP_FLAG
is set.
On devices running Build.VERSION_CODES#Q
and above,
FILTER_BITMAP_FLAG
is set by this constructor, and it can be
cleared with setFlags(int)
or setFilterBitmap(boolean)
.
On devices running Build.VERSION_CODES#S
and above, ANTI_ALIAS_FLAG
is set by this constructor, and it can be cleared with setFlags(int)
or
setAntiAlias(boolean)
.
public Paint (int flags)
Create a new paint with the specified flags. Use setFlags() to change these after the paint is created.
On devices running Build.VERSION_CODES#O
and below, hardware
accelerated drawing always acts as if FILTER_BITMAP_FLAG
is set.
On devices running Build.VERSION_CODES#Q
and above,
FILTER_BITMAP_FLAG
is always set by this constructor, regardless
of the value of flags
. It can be cleared with setFlags(int)
or
setFilterBitmap(boolean)
.
Parameters | |
---|---|
flags |
int : initial flag bits, as if they were passed via setFlags(). |
public Paint (Paint paint)
Create a new paint, initialized with the attributes in the specified paint parameter.
Parameters | |
---|---|
paint |
Paint : Existing paint used to initialized the attributes of the
new paint. |
public float ascent ()
Return the distance above (negative) the baseline (ascent) based on the current typeface and text size.
Note that this is the ascent of the main typeface, and actual text rendered may need a larger ascent because fallback fonts may get used in rendering the text.
Returns | |
---|---|
float |
the distance above (negative) the baseline (ascent) based on the current typeface and text size. |
public int breakText (char[] text, int index, int count, float maxWidth, float[] measuredWidth)
Measure the text, stopping early if the measured width exceeds maxWidth. Return the number of chars that were measured, and if measuredWidth is not null, return in it the actual width measured.
Parameters | |
---|---|
text |
char : The text to measure. Cannot be null. |
index |
int : The offset into text to begin measuring at |
count |
int : The number of maximum number of entries to measure. If count
is negative, then the characters are measured in reverse order. |
maxWidth |
float : The maximum width to accumulate. |
measuredWidth |
float : Optional. If not null, returns the actual width
measured. |
Returns | |
---|---|
int |
The number of chars that were measured. Will always be <= abs(count). |
public int breakText (String text, boolean measureForwards, float maxWidth, float[] measuredWidth)
Measure the text, stopping early if the measured width exceeds maxWidth. Return the number of chars that were measured, and if measuredWidth is not null, return in it the actual width measured.
Parameters | |
---|---|
text |
String : The text to measure. Cannot be null. |
measureForwards |
boolean : If true, measure forwards, starting with the
first character in the string. Otherwise,
measure backwards, starting with the
last character in the string. |
maxWidth |
float : The maximum width to accumulate. |
measuredWidth |
float : Optional. If not null, returns the actual width
measured. |
Returns | |
---|---|
int |
The number of chars that were measured. Will always be <= abs(count). |
public int breakText (CharSequence text, int start, int end, boolean measureForwards, float maxWidth, float[] measuredWidth)
Measure the text, stopping early if the measured width exceeds maxWidth. Return the number of chars that were measured, and if measuredWidth is not null, return in it the actual width measured.
Parameters | |
---|---|
text |
CharSequence : The text to measure. Cannot be null. |
start |
int : The offset into text to begin measuring at |
end |
int : The end of the text slice to measure. |
measureForwards |
boolean : If true, measure forwards, starting at start.
Otherwise, measure backwards, starting with end. |
maxWidth |
float : The maximum width to accumulate. |
measuredWidth |
float : Optional. If not null, returns the actual width
measured. |
Returns | |
---|---|
int |
The number of chars that were measured. Will always be <= abs(end - start). |
public void clearShadowLayer ()
Clear the shadow layer.
public float descent ()
Return the distance below (positive) the baseline (descent) based on the current typeface and text size.
Note that this is the descent of the main typeface, and actual text rendered may need a larger descent because fallback fonts may get used in rendering the text.
Returns | |
---|---|
float |
the distance below (positive) the baseline (descent) based on the current typeface and text size. |
public boolean equalsForTextMeasurement (Paint other)
Returns true of the passed Paint
will have the same effect on text measurement
Parameters | |
---|---|
other |
Paint : A Paint object.
This value cannot be null . |
Returns | |
---|---|
boolean |
true if the other Paint has the same effect on text measurement. |
public int getAlpha ()
Helper to getColor() that just returns the color's alpha value. This is the same as calling getColor() >>> 24. It always returns a value between 0 (completely transparent) and 255 (completely opaque).
Returns | |
---|---|
int |
the alpha component of the paint's color. |
public BlendMode getBlendMode ()
Get the paint's blend mode object.
Returns | |
---|---|
BlendMode |
the paint's blend mode (or null) |
public int getColor ()
Return the paint's color in sRGB. Note that the color is a 32bit value containing alpha as well as r,g,b. This 32bit value is not premultiplied, meaning that its alpha can be any value, regardless of the values of r,g,b. See the Color class for more details.
Returns | |
---|---|
int |
the paint's color (and alpha). |
public ColorFilter getColorFilter ()
Get the paint's colorfilter (maybe be null).
Returns | |
---|---|
ColorFilter |
the paint's colorfilter (maybe be null) |
public long getColorLong ()
Return the paint's color. Note that the color is a long with an encoded
ColorSpace
as well as alpha and r,g,b. These values are not
premultiplied, meaning that alpha can be any value, regardless of the
values of r,g,b. See the Color
class for more details.
Returns | |
---|---|
long |
the paint's color, alpha, and ColorSpace encoded as a
ColorLong |
public int getEndHyphenEdit ()
Get the current value of end hyphen edit.
The default value is 0 which is equivalent to END_HYPHEN_EDIT_NO_EDIT
.
Returns | |
---|---|
int |
the current starting hyphen edit value
Value is END_HYPHEN_EDIT_NO_EDIT , END_HYPHEN_EDIT_REPLACE_WITH_HYPHEN , END_HYPHEN_EDIT_INSERT_HYPHEN , END_HYPHEN_EDIT_INSERT_ARMENIAN_HYPHEN , END_HYPHEN_EDIT_INSERT_MAQAF , END_HYPHEN_EDIT_INSERT_UCAS_HYPHEN , or END_HYPHEN_EDIT_INSERT_ZWJ_AND_HYPHEN |
See also:
public boolean getFillPath (Path src, Path dst)
Applies any/all effects (patheffect, stroking) to src, returning the result in dst. The result is that drawing src with this paint will be the same as drawing dst with a default paint (at least from the geometric perspective).
Parameters | |
---|---|
src |
Path : input path |
dst |
Path : output path (may be the same as src) |
Returns | |
---|---|
boolean |
true if the path should be filled, or false if it should be drawn with a hairline (width == 0) |
public int getFlags ()
Return the paint's flags. Use the Flag enum to test flag values.
Returns | |
---|---|
int |
the paint's flags (see enums ending in _Flag for bit masks)
Value is either 0 or a combination of ANTI_ALIAS_FLAG , FILTER_BITMAP_FLAG , DITHER_FLAG , UNDERLINE_TEXT_FLAG , STRIKE_THRU_TEXT_FLAG , FAKE_BOLD_TEXT_FLAG , LINEAR_TEXT_FLAG , SUBPIXEL_TEXT_FLAG , and EMBEDDED_BITMAP_TEXT_FLAG |
public String getFontFeatureSettings ()
Returns the font feature settings. The format is the same as the CSS font-feature-settings attribute: https://www.w3.org/TR/css-fonts-3/#font-feature-settings-prop
Returns | |
---|---|
String |
the paint's currently set font feature settings. Default is null. |
See also:
public float getFontMetrics (Paint.FontMetrics metrics)
Return the font's recommended interline spacing, given the Paint's settings for typeface, textSize, etc. If metrics is not null, return the fontmetric values in it.
Note that these are the values for the main typeface, and actual text rendered may need a larger set of values because fallback fonts may get used in rendering the text.
Parameters | |
---|---|
metrics |
Paint.FontMetrics : If this object is not null, its fields are filled with
the appropriate values given the paint's text attributes. |
Returns | |
---|---|
float |
the font's recommended interline spacing. |
public Paint.FontMetrics getFontMetrics ()
Allocates a new FontMetrics object, and then calls getFontMetrics(fm) with it, returning the object.
Returns | |
---|---|
Paint.FontMetrics |
public int getFontMetricsInt (Paint.FontMetricsInt fmi)
Return the font's interline spacing, given the Paint's settings for typeface, textSize, etc. If metrics is not null, return the fontmetric values in it. Note: all values have been converted to integers from floats, in such a way has to make the answers useful for both spacing and clipping. If you want more control over the rounding, call getFontMetrics().
Note that these are the values for the main typeface, and actual text rendered may need a larger set of values because fallback fonts may get used in rendering the text.
Parameters | |
---|---|
fmi |
Paint.FontMetricsInt |
Returns | |
---|---|
int |
the font's interline spacing. |
public float getFontSpacing ()
Return the recommend line spacing based on the current typeface and text size.
Note that this is the value for the main typeface, and actual text rendered may need a larger value because fallback fonts may get used in rendering the text.
Returns | |
---|---|
float |
recommend line spacing based on the current typeface and text size. |
public String getFontVariationSettings ()
Returns the font variation settings.
Returns | |
---|---|
String |
the paint's currently set font variation settings. Default is null. |
See also:
public int getHinting ()
Return the paint's hinting mode. Returns either
HINTING_OFF
or HINTING_ON
.
Returns | |
---|---|
int |
public float getLetterSpacing ()
Return the paint's letter-spacing for text. The default value is 0.
Returns | |
---|---|
float |
the paint's letter-spacing for drawing text. |
public MaskFilter getMaskFilter ()
Get the paint's maskfilter object.
Returns | |
---|---|
MaskFilter |
the paint's maskfilter (or null) |
public int getOffsetForAdvance (char[] text, int start, int end, int contextStart, int contextEnd, boolean isRtl, float advance)
Get the character offset within the string whose position is closest to the specified horizontal position.
The returned value is generally the value of offset
for which
getRunAdvance(char[], int, int, int, int, boolean, int)
yields a result most closely approximating advance
,
and which is also on a grapheme cluster boundary. As such, it is the preferred method
for positioning a cursor in response to a touch or pointer event. The grapheme cluster
boundaries are based on
Unicode Standard Annex #29 but with some
tailoring for better user experience.
Note that advance
is a (generally positive) width measurement relative to the start
of the run. Thus, for RTL runs it the distance from the point to the right edge.
All indices are relative to the start of text
. Further, 0 <= contextStart
<= start <= end <= contextEnd <= text.length
must hold on entry, and start <= result
<= end
will hold on return.
Parameters | |
---|---|
text |
char : the text to measure. Cannot be null. |
start |
int : the index of the start of the range to measure |
end |
int : the index + 1 of the end of the range to measure |
contextStart |
int : the index of the start of the shaping context |
contextEnd |
int : the index + 1 of the end of the range to measure |
isRtl |
boolean : whether the run is in RTL direction |
advance |
float : width relative to start of run |
Returns | |
---|---|
int |
index of offset |
public int getOffsetForAdvance (CharSequence text, int start, int end, int contextStart, int contextEnd, boolean isRtl, float advance)
Parameters | |
---|---|
text |
CharSequence : the text to measure. Cannot be null. |
start |
int : the index of the start of the range to measure |
end |
int : the index + 1 of the end of the range to measure |
contextStart |
int : the index of the start of the shaping context |
contextEnd |
int : the index + 1 of the end of the range to measure |
isRtl |
boolean : whether the run is in RTL direction |
advance |
float : width relative to start of run |
Returns | |
---|---|
int |
index of offset |
public PathEffect getPathEffect ()
Get the paint's patheffect object.
Returns | |
---|---|
PathEffect |
the paint's patheffect (or null) |
public float getRunAdvance (char[] text, int start, int end, int contextStart, int contextEnd, boolean isRtl, int offset)
Measure cursor position within a run of text.
The run of text includes the characters from start
to end
in the text. In
addition, the range contextStart
to contextEnd
is used as context for the
purpose of complex text shaping, such as Arabic text potentially shaped differently based on
the text next to it.
All text outside the range contextStart..contextEnd
is ignored. The text between
start
and end
will be laid out to be measured.
The returned width measurement is the advance from start
to offset
. It is
generally a positive value, no matter the direction of the run. If offset == end
,
the return value is simply the width of the whole run from start
to end
.
Ligatures are formed for characters in the range start..end
(but not for
start..contextStart
or end..contextEnd
). If offset
points to a
character in the middle of such a formed ligature, but at a grapheme cluster boundary, the
return value will also reflect an advance in the middle of the ligature. See
getOffsetForAdvance(char[], int, int, int, int, boolean, float)
for more discussion of grapheme cluster boundaries.
The direction of the run is explicitly specified by isRtl
. Thus, this method is
suitable only for runs of a single direction.
All indices are relative to the start of text
. Further, 0 <= contextStart
<= start <= offset <= end <= contextEnd <= text.length
must hold on entry.
Parameters | |
---|---|
text |
char : the text to measure. Cannot be null. |
start |
int : the index of the start of the range to measure |
end |
int : the index + 1 of the end of the range to measure |
contextStart |
int : the index of the start of the shaping context |
contextEnd |
int : the index + 1 of the end of the shaping context |
isRtl |
boolean : whether the run is in RTL direction |
offset |
int : index of caret position |
Returns | |
---|---|
float |
width measurement between start and offset |
public float getRunAdvance (CharSequence text, int start, int end, int contextStart, int contextEnd, boolean isRtl, int offset)
Parameters | |
---|---|
text |
CharSequence : the text to measure. Cannot be null. |
start |
int : the index of the start of the range to measure |
end |
int : the index + 1 of the end of the range to measure |
contextStart |
int : the index of the start of the shaping context |
contextEnd |
int : the index + 1 of the end of the shaping context |
isRtl |
boolean : whether the run is in RTL direction |
offset |
int : index of caret position |
Returns | |
---|---|
float |
width measurement between start and offset |
public Shader getShader ()
Get the paint's shader object.
Returns | |
---|---|
Shader |
the paint's shader (or null) |
public int getShadowLayerColor ()
Returns the color of the shadow layer.
Returns | |
---|---|
int |
public long getShadowLayerColorLong ()
Returns the color of the shadow layer.
Returns | |
---|---|
long |
the shadow layer's color encoded as a ColorLong . |
public float getShadowLayerDx ()
Returns the x offset of the shadow layer.
Returns | |
---|---|
float |
public float getShadowLayerDy ()
Returns the y offset of the shadow layer.
Returns | |
---|---|
float |
public float getShadowLayerRadius ()
Returns the blur radius of the shadow layer.
Returns | |
---|---|
float |
public int getStartHyphenEdit ()
Get the current value of start hyphen edit.
The default value is 0 which is equivalent to START_HYPHEN_EDIT_NO_EDIT
.
Returns | |
---|---|
int |
the current starting hyphen edit value
Value is START_HYPHEN_EDIT_NO_EDIT , START_HYPHEN_EDIT_INSERT_HYPHEN , or START_HYPHEN_EDIT_INSERT_ZWJ |
See also:
public float getStrikeThruPosition ()
Distance from top of the strike-through line to the baseline in pixels.
The result is negative for positions that are above the baseline.
This method returns where the strike-through line should be drawn independent of if the
STRIKE_THRU_TEXT_FLAG
bit is set.
This units of this value are pixels.
Returns | |
---|---|
float |
the position of the strike-through line in pixels This units of this value are pixels. {} |
public float getStrikeThruThickness ()
Returns the thickness of the strike-through line in pixels.
This units of this value are pixels.
Returns | |
---|---|
float |
the position of the strike-through line in pixels This units of this value are pixels. {} |
public Paint.Cap getStrokeCap ()
Return the paint's Cap, controlling how the start and end of stroked lines and paths are treated.
Returns | |
---|---|
Paint.Cap |
the line cap style for the paint, used whenever the paint's style is Stroke or StrokeAndFill. |
public Paint.Join getStrokeJoin ()
Return the paint's stroke join type.
Returns | |
---|---|
Paint.Join |
the paint's Join. |
public float getStrokeMiter ()
Return the paint's stroke miter value. Used to control the behavior of miter joins when the joins angle is sharp.
Returns | |
---|---|
float |
the paint's miter limit, used whenever the paint's style is Stroke or StrokeAndFill. |
public float getStrokeWidth ()
Return the width for stroking.
A value of 0 strokes in hairline mode. Hairlines always draws a single pixel independent of the canvas's matrix.Returns | |
---|---|
float |
the paint's stroke width, used whenever the paint's style is Stroke or StrokeAndFill. |
public Paint.Style getStyle ()
Return the paint's style, used for controlling how primitives' geometries are interpreted (except for drawBitmap, which always assumes FILL_STYLE).
Returns | |
---|---|
Paint.Style |
the paint's style setting (Fill, Stroke, StrokeAndFill) |
public Paint.Align getTextAlign ()
Return the paint's Align value for drawing text. This controls how the text is positioned relative to its origin. LEFT align means that all of the text will be drawn to the right of its origin (i.e. the origin specifieds the LEFT edge of the text) and so on.
Returns | |
---|---|
Paint.Align |
the paint's Align value for drawing text. |
public void getTextBounds (String text, int start, int end, Rect bounds)
Retrieve the text boundary box and store to bounds. Return in bounds (allocated by the caller) the smallest rectangle that encloses all of the characters, with an implied origin at (0,0).
Parameters | |
---|---|
text |
String : string to measure and return its bounds |
start |
int : index of the first char in the string to measure |
end |
int : 1 past the last char in the string to measure |
bounds |
Rect : returns the unioned bounds of all the text. Must be allocated by the caller |
public void getTextBounds (CharSequence text, int start, int end, Rect bounds)
Retrieve the text boundary box and store to bounds.
Return in bounds (allocated by the caller) the smallest rectangle that
encloses all of the characters, with an implied origin at (0,0).
Note that styles are ignored even if you pass Spanned
instance.
Use StaticLayout
for measuring bounds of Spanned
.
Parameters | |
---|---|
text |
CharSequence : text to measure and return its bounds
This value cannot be null . |
start |
int : index of the first char in the text to measure |
end |
int : 1 past the last char in the text to measure |
bounds |
Rect : returns the unioned bounds of all the text. Must be allocated by the caller
This value cannot be null . |
public void getTextBounds (char[] text, int index, int count, Rect bounds)
Return in bounds (allocated by the caller) the smallest rectangle that encloses all of the characters, with an implied origin at (0,0).
Parameters | |
---|---|
text |
char : array of chars to measure and return their unioned bounds |
index |
int : index of the first char in the array to measure |
count |
int : the number of chars, beginning at index, to measure |
bounds |
Rect : returns the unioned bounds of all the text. Must be allocated by the caller |
public Locale getTextLocale ()
Get the text's primary Locale. Note that this is not all of the locale-related information
Paint has. Use getTextLocales()
to get the complete list.
Returns | |
---|---|
Locale |
the paint's primary Locale used for drawing text, never null. |
public LocaleList getTextLocales ()
Get the text locale list.
Returns | |
---|---|
LocaleList |
the paint's LocaleList used for drawing text, never null or empty. |
public void getTextPath (char[] text, int index, int count, float x, float y, Path path)
Return the path (outline) for the specified text. Note: just like Canvas.drawText, this will respect the Align setting in the paint.
Parameters | |
---|---|
text |
char : the text to retrieve the path from |
index |
int : the index of the first character in text |
count |
int : the number of characters starting with index |
x |
float : the x coordinate of the text's origin |
y |
float : the y coordinate of the text's origin |
path |
Path : the path to receive the data describing the text. Must be allocated by the caller |
public void getTextPath (String text, int start, int end, float x, float y, Path path)
Return the path (outline) for the specified text. Note: just like Canvas.drawText, this will respect the Align setting in the paint.
Parameters | |
---|---|
text |
String : the text to retrieve the path from |
start |
int : the first character in the text |
end |
int : 1 past the last character in the text |
x |
float : the x coordinate of the text's origin |
y |
float : the y coordinate of the text's origin |
path |
Path : the path to receive the data describing the text. Must be allocated by the caller |
public float getTextRunAdvances (char[] chars, int index, int count, int contextIndex, int contextCount, boolean isRtl, float[] advances, int advancesIndex)
Retrieve the character advances of the text.
Returns the total advance width for the characters in the run from index
for
count
of chars, and if advances
is not null, the advance assigned to each of
these characters (java chars).
The trailing surrogate in a valid surrogate pair is assigned an advance of 0. Thus the number of returned advances is always equal to count, not to the number of unicode codepoints represented by the run.
In the case of conjuncts or combining marks, the total advance is assigned to the first logical character, and the following characters are assigned an advance of 0.
This generates the sum of the advances of glyphs for characters in a reordered cluster as the width of the first logical character in the cluster, and 0 for the widths of all other characters in the cluster. In effect, such clusters are treated like conjuncts.
The shaping bounds limit the amount of context available outside start and end that can be used for shaping analysis. These bounds typically reflect changes in bidi level or font metrics across which shaping does not occur.
Parameters | |
---|---|
chars |
char : the text to measure.
This value cannot be null . |
index |
int : the index of the first character to measure
Value is 0 or greater |
count |
int : the number of characters to measure
Value is 0 or greater |
contextIndex |
int : the index of the first character to use for shaping context.
Context must cover the measureing target.
Value is 0 or greater |
contextCount |
int : the number of character to use for shaping context.
Context must cover the measureing target.
Value is 0 or greater |
isRtl |
boolean : whether the run is in RTL direction |
advances |
float : array to receive the advances, must have room for all advances.
This can be null if only total advance is needed
This value may be null . |
advancesIndex |
int : the position in advances at which to put the advance corresponding to
the character at start
Value is 0 or greater |
Returns | |
---|---|
float |
the total advance in pixels |
public int getTextRunCursor (CharSequence text, int contextStart, int contextEnd, boolean isRtl, int offset, int cursorOpt)
Returns the next cursor position in the run. This avoids placing the cursor between surrogates, between characters that form conjuncts, between base characters and combining marks, or within a reordering cluster.
ContextStart, contextEnd, and offset are relative to the start of text. The context is the shaping context for cursor movement, generally the bounds of the metric span enclosing the cursor in the direction of movement.
If cursorOpt is CURSOR_AT
and the offset is not a valid cursor position, this
returns -1. Otherwise this will never return a value before contextStart or after
contextEnd.
Parameters | |
---|---|
text |
CharSequence : the text
This value cannot be null . |
contextStart |
int : the start of the context
Value is 0 or greater |
contextEnd |
int : the end of the context
Value is 0 or greater |
isRtl |
boolean : true if the paragraph context is RTL, otherwise false |
offset |
int : the cursor position to move from
Value is 0 or greater |
cursorOpt |
int : how to move the cursor
Value is CURSOR_AFTER , CURSOR_AT_OR_AFTER , CURSOR_BEFORE , or CURSOR_AT_OR_BEFORE |
Returns | |
---|---|
int |
the offset of the next position, or -1 |
public int getTextRunCursor (char[] text, int contextStart, int contextLength, boolean isRtl, int offset, int cursorOpt)
Returns the next cursor position in the run. This avoids placing the cursor between surrogates, between characters that form conjuncts, between base characters and combining marks, or within a reordering cluster.
ContextStart and offset are relative to the start of text. The context is the shaping context for cursor movement, generally the bounds of the metric span enclosing the cursor in the direction of movement.
If cursorOpt is CURSOR_AT
and the offset is not a valid cursor position, this
returns -1. Otherwise this will never return a value before contextStart or after
contextStart + contextLength.
Parameters | |
---|---|
text |
char : the text
This value cannot be null . |
contextStart |
int : the start of the context
Value is 0 or greater |
contextLength |
int : the length of the context
Value is 0 or greater |
isRtl |
boolean : true if the paragraph context is RTL, otherwise false |
offset |
int : the cursor position to move from
Value is 0 or greater |
cursorOpt |
int : how to move the cursor
Value is CURSOR_AFTER , CURSOR_AT_OR_AFTER , CURSOR_BEFORE , or CURSOR_AT_OR_BEFORE |
Returns | |
---|---|
int |
the offset of the next position, or -1 |
public float getTextScaleX ()
Return the paint's horizontal scale factor for text. The default value is 1.0.
Returns | |
---|---|
float |
the paint's scale factor in X for drawing/measuring text |
public float getTextSize ()
Return the paint's text size.
Returns | |
---|---|
float |
the paint's text size in pixel units. |
public float getTextSkewX ()
Return the paint's horizontal skew factor for text. The default value is 0.
Returns | |
---|---|
float |
the paint's skew factor in X for drawing text. |
public int getTextWidths (char[] text, int index, int count, float[] widths)
Return the advance widths for the characters in the string.
Parameters | |
---|---|
text |
char : The text to measure. Cannot be null. |
index |
int : The index of the first char to to measure |
count |
int : The number of chars starting with index to measure |
widths |
float : array to receive the advance widths of the characters.
Must be at least a large as count. |
Returns | |
---|---|
int |
the actual number of widths returned. |
public int getTextWidths (String text, float[] widths)
Return the advance widths for the characters in the string.
Parameters | |
---|---|
text |
String : The text to measure |
widths |
float : array to receive the advance widths of the characters.
Must be at least a large as the text. |
Returns | |
---|---|
int |
the number of code units in the specified text. |
public int getTextWidths (String text, int start, int end, float[] widths)
Return the advance widths for the characters in the string.
Parameters | |
---|---|
text |
String : The text to measure. Cannot be null. |
start |
int : The index of the first char to to measure |
end |
int : The end of the text slice to measure |
widths |
float : array to receive the advance widths of the characters.
Must be at least a large as the text. |
Returns | |
---|---|
int |
the number of code units in the specified text. |
public int getTextWidths (CharSequence text, int start, int end, float[] widths)
Return the advance widths for the characters in the string.
Parameters | |
---|---|
text |
CharSequence : The text to measure. Cannot be null. |
start |
int : The index of the first char to to measure |
end |
int : The end of the text slice to measure |
widths |
float : array to receive the advance widths of the characters.
Must be at least a large as (end - start). |
Returns | |
---|---|
int |
the actual number of widths returned. |
public Typeface getTypeface ()
Get the paint's typeface object.
The typeface object identifies which font to use when drawing or measuring text.Returns | |
---|---|
Typeface |
the paint's typeface (or null) |
public float getUnderlinePosition ()
Returns the distance from top of the underline to the baseline in pixels.
The result is positive for positions that are below the baseline.
This method returns where the underline should be drawn independent of if the UNDERLINE_TEXT_FLAG
bit is set.
This units of this value are pixels.
Returns | |
---|---|
float |
the position of the underline in pixels This units of this value are pixels. {} |
public float getUnderlineThickness ()
Returns the thickness of the underline in pixels.
This units of this value are pixels.
Returns | |
---|---|
float |
the thickness of the underline in pixels This units of this value are pixels. {} |
public float getWordSpacing ()
Return the paint's extra word-spacing for text.
The default value is 0.
This units of this value are pixels.
Returns | |
---|---|
float |
the paint's extra word-spacing for drawing text in pixels. This units of this value are pixels. {} |
See also:
public Xfermode getXfermode ()
Get the paint's transfer mode object.
Returns | |
---|---|
Xfermode |
the paint's transfer mode (or null) |
public boolean hasGlyph (String string)
Determine whether the typeface set on the paint has a glyph supporting the string. The simplest case is when the string contains a single character, in which this method determines whether the font has the character. In the case of multiple characters, the method returns true if there is a single glyph representing the ligature. For example, if the input is a pair of regional indicator symbols, determine whether there is an emoji flag for the pair.
Finally, if the string contains a variation selector, the method only returns true if the fonts contains a glyph specific to that variation.
Checking is done on the entire fallback chain, not just the immediate font referenced.
Parameters | |
---|---|
string |
String : the string to test whether there is glyph support |
Returns | |
---|---|
boolean |
true if the typeface has a glyph for the string |
public final boolean isAntiAlias ()
Helper for getFlags(), returning true if ANTI_ALIAS_FLAG bit is set AntiAliasing smooths out the edges of what is being drawn, but is has no impact on the interior of the shape. See setDither() and setFilterBitmap() to affect how colors are treated.
Returns | |
---|---|
boolean |
true if the antialias bit is set in the paint's flags. |
public final boolean isDither ()
Helper for getFlags(), returning true if DITHER_FLAG bit is set Dithering affects how colors that are higher precision than the device are down-sampled. No dithering is generally faster, but higher precision colors are just truncated down (e.g. 8888 -> 565). Dithering tries to distribute the error inherent in this process, to reduce the visual artifacts.
Returns | |
---|---|
boolean |
true if the dithering bit is set in the paint's flags. |
public boolean isElegantTextHeight ()
Get the elegant metrics flag.
Returns | |
---|---|
boolean |
true if elegant metrics are enabled for text drawing. |
public final boolean isFakeBoldText ()
Helper for getFlags(), returning true if FAKE_BOLD_TEXT_FLAG bit is set
Returns | |
---|---|
boolean |
true if the fakeBoldText bit is set in the paint's flags. |
public final boolean isFilterBitmap ()
Whether or not the bitmap filter is activated. Filtering affects the sampling of bitmaps when they are transformed. Filtering does not affect how the colors in the bitmap are converted into device pixels. That is dependent on dithering and xfermodes.
Returns | |
---|---|
boolean |
See also:
public final boolean isLinearText ()
Helper for getFlags(), returning true if LINEAR_TEXT_FLAG bit is set
Returns | |
---|---|
boolean |
true if the lineartext bit is set in the paint's flags |
public final boolean isStrikeThruText ()
Helper for getFlags(), returning true if STRIKE_THRU_TEXT_FLAG bit is set
Returns | |
---|---|
boolean |
true if the STRIKE_THRU_TEXT_FLAG bit is set in the paint's flags. |
public final boolean isSubpixelText ()
Helper for getFlags(), returning true if SUBPIXEL_TEXT_FLAG bit is set
Returns | |
---|---|
boolean |
true if the subpixel bit is set in the paint's flags |
public final boolean isUnderlineText ()
Helper for getFlags(), returning true if UNDERLINE_TEXT_FLAG bit is set
Returns | |
---|---|
boolean |
true if the underlineText bit is set in the paint's flags. |
public float measureText (char[] text, int index, int count)
Return the width of the text.
Parameters | |
---|---|
text |
char : The text to measure. Cannot be null. |
index |
int : The index of the first character to start measuring |
count |
int : THe number of characters to measure, beginning with start |
Returns | |
---|---|
float |
The width of the text |
public float measureText (CharSequence text, int start, int end)
Return the width of the text.
Parameters | |
---|---|
text |
CharSequence : The text to measure |
start |
int : The index of the first character to start measuring |
end |
int : 1 beyond the index of the last character to measure |
Returns | |
---|---|
float |
The width of the text |
public float measureText (String text, int start, int end)
Return the width of the text.
Parameters | |
---|---|
text |
String : The text to measure. Cannot be null. |
start |
int : The index of the first character to start measuring |
end |
int : 1 beyond the index of the last character to measure |
Returns | |
---|---|
float |
The width of the text |
public float measureText (String text)
Return the width of the text.
Parameters | |
---|---|
text |
String : The text to measure. Cannot be null. |
Returns | |
---|---|
float |
The width of the text |
public void reset ()
Restores the paint to its default settings.
public void set (Paint src)
Copy the fields from src into this paint. This is equivalent to calling get() on all of the src fields, and calling the corresponding set() methods on this.
Parameters | |
---|---|
src |
Paint |
public void setARGB (int a, int r, int g, int b)
Helper to setColor(), that takes a,r,g,b and constructs the color int
Parameters | |
---|---|
a |
int : The new alpha component (0..255) of the paint's color. |
r |
int : The new red component (0..255) of the paint's color. |
g |
int : The new green component (0..255) of the paint's color. |
b |
int : The new blue component (0..255) of the paint's color. |
public void setAlpha (int a)
Helper to setColor(), that only assigns the color's alpha value, leaving its r,g,b values unchanged. Results are undefined if the alpha value is outside of the range [0..255]
Parameters | |
---|---|
a |
int : set the alpha component [0..255] of the paint's color. |
public void setAntiAlias (boolean aa)
Helper for setFlags(), setting or clearing the ANTI_ALIAS_FLAG bit AntiAliasing smooths out the edges of what is being drawn, but is has no impact on the interior of the shape. See setDither() and setFilterBitmap() to affect how colors are treated.
Parameters | |
---|---|
aa |
boolean : true to set the antialias bit in the flags, false to clear it |
public void setBlendMode (BlendMode blendmode)
Set or clear the blend mode. A blend mode defines how source pixels (generated by a drawing command) are composited with the destination pixels (content of the render target).
Pass null to clear any previous blend mode.Parameters | |
---|---|
blendmode |
BlendMode : May be null. The blend mode to be installed in the paint
This value may be null . |
See also:
public void setColor (long color)
Set the paint's color with a ColorLong
. Note that the color is
a long with an encoded ColorSpace
as well as alpha and r,g,b.
These values are not premultiplied, meaning that alpha can be any value,
regardless of the values of r,g,b. See the Color
class for more
details.
Parameters | |
---|---|
color |
long : The new color (including alpha and ColorSpace )
to set in the paint. |
Throws | |
---|---|
IllegalArgumentException |
if the color space encoded in the
ColorLong is invalid or unknown. |
public void setColor (int color)
Set the paint's color. Note that the color is an int containing alpha as well as r,g,b. This 32bit value is not premultiplied, meaning that its alpha can be any value, regardless of the values of r,g,b. See the Color class for more details.
Parameters | |
---|---|
color |
int : The new color (including alpha) to set in the paint. |
public ColorFilter setColorFilter (ColorFilter filter)
Set or clear the paint's colorfilter, returning the parameter.
Parameters | |
---|---|
filter |
ColorFilter : May be null. The new filter to be installed in the paint |
Returns | |
---|---|
ColorFilter |
filter |
public void setDither (boolean dither)
Helper for setFlags(), setting or clearing the DITHER_FLAG bit Dithering affects how colors that are higher precision than the device are down-sampled. No dithering is generally faster, but higher precision colors are just truncated down (e.g. 8888 -> 565). Dithering tries to distribute the error inherent in this process, to reduce the visual artifacts.
Parameters | |
---|---|
dither |
boolean : true to set the dithering bit in flags, false to clear it |
public void setElegantTextHeight (boolean elegant)
Set the paint's elegant height metrics flag. This setting selects font variants that have not been compacted to fit Latin-based vertical metrics, and also increases top and bottom bounds to provide more space.
Parameters | |
---|---|
elegant |
boolean : set the paint's elegant metrics flag for drawing text. |
public void setEndHyphenEdit (int endHyphen)
Set a end hyphen edit on the paint.
By setting end hyphen edit, the measurement and drawing is performed with modifying
hyphenation at the end of line. For example, by passing
END_HYPHEN_EDIT_INSERT_HYPHEN
like as follows, HYPHEN(U+2010)
character is appended at the end of line.
Paint paint = new Paint();
paint.setEndHyphenEdit(Paint.END_HYPHEN_EDIT_INSERT_HYPHEN);
paint.measureText("abc", 0, 3); // Returns the width of "abc-"
Canvas.drawText("abc", 0, 3, 0f, 0f, paint); // Draws "abc-"
The default value is 0 which is equivalent to END_HYPHEN_EDIT_NO_EDIT
.
Parameters | |
---|---|
endHyphen |
int : a end hyphen edit value.
Value is END_HYPHEN_EDIT_NO_EDIT , END_HYPHEN_EDIT_REPLACE_WITH_HYPHEN , END_HYPHEN_EDIT_INSERT_HYPHEN , END_HYPHEN_EDIT_INSERT_ARMENIAN_HYPHEN , END_HYPHEN_EDIT_INSERT_MAQAF , END_HYPHEN_EDIT_INSERT_UCAS_HYPHEN , or END_HYPHEN_EDIT_INSERT_ZWJ_AND_HYPHEN |
See also:
public void setFakeBoldText (boolean fakeBoldText)
Helper for setFlags(), setting or clearing the FAKE_BOLD_TEXT_FLAG bit
Parameters | |
---|---|
fakeBoldText |
boolean : true to set the fakeBoldText bit in the paint's
flags, false to clear it. |
public void setFilterBitmap (boolean filter)
Helper for setFlags(), setting or clearing the FILTER_BITMAP_FLAG bit. Filtering affects the sampling of bitmaps when they are transformed. Filtering does not affect how the colors in the bitmap are converted into device pixels. That is dependent on dithering and xfermodes.
Parameters | |
---|---|
filter |
boolean : true to set the FILTER_BITMAP_FLAG bit in the paint's
flags, false to clear it. |
See also:
public void setFlags (int flags)
Set the paint's flags. Use the Flag enum to specific flag values.
Parameters | |
---|---|
flags |
int : The new flag bits for the paint
Value is either 0 or a combination of ANTI_ALIAS_FLAG , FILTER_BITMAP_FLAG , DITHER_FLAG , UNDERLINE_TEXT_FLAG , STRIKE_THRU_TEXT_FLAG , FAKE_BOLD_TEXT_FLAG , LINEAR_TEXT_FLAG , SUBPIXEL_TEXT_FLAG , and EMBEDDED_BITMAP_TEXT_FLAG |
public void setFontFeatureSettings (String settings)
Set font feature settings. The format is the same as the CSS font-feature-settings attribute: https://www.w3.org/TR/css-fonts-3/#font-feature-settings-prop
Parameters | |
---|---|
settings |
String : the font feature settings string to use, may be null. |
See also:
public boolean setFontVariationSettings (String fontVariationSettings)
Sets TrueType or OpenType font variation settings. The settings string is constructed from multiple pairs of axis tag and style values. The axis tag must contain four ASCII characters and must be wrapped with single quotes (U+0027) or double quotes (U+0022). Axis strings that are longer or shorter than four characters, or contain characters outside of U+0020..U+007E are invalid. If a specified axis name is not defined in the font, the settings will be ignored. Examples,
Paint paint = new Paint();
paint.setFontVariationSettings("'wdth' 150");
Paint paint = new Paint();
paint.setFontVariationSettings("'slnt' 20, 'ital' 1");
Parameters | |
---|---|
fontVariationSettings |
String : font variation settings. You can pass null or empty string as
no variation settings. |
Returns | |
---|---|
boolean |
true if the given settings is effective to at least one font file underlying this typeface. This function also returns true for empty settings string. Otherwise returns false |
Throws | |
---|---|
IllegalArgumentException |
If given string is not a valid font variation settings format |
public void setHinting (int mode)
Set the paint's hinting mode. May be either
HINTING_OFF
or HINTING_ON
.
Parameters | |
---|---|
mode |
int |
public void setLetterSpacing (float letterSpacing)
Set the paint's letter-spacing for text. The default value is 0. The value is in 'EM' units. Typical values for slight expansion will be around 0.05. Negative values tighten text.
Parameters | |
---|---|
letterSpacing |
float : set the paint's letter-spacing for drawing text. |
public void setLinearText (boolean linearText)
Helper for setFlags(), setting or clearing the LINEAR_TEXT_FLAG bit
Parameters | |
---|---|
linearText |
boolean : true to set the linearText bit in the paint's flags,
false to clear it. |
public MaskFilter setMaskFilter (MaskFilter maskfilter)
Set or clear the maskfilter object.
Pass null to clear any previous maskfilter. As a convenience, the parameter passed is also returned.Parameters | |
---|---|
maskfilter |
MaskFilter : May be null. The maskfilter to be installed in the
paint |
Returns | |
---|---|
MaskFilter |
maskfilter |
public PathEffect setPathEffect (PathEffect effect)
Set or clear the patheffect object.
Pass null to clear any previous patheffect. As a convenience, the parameter passed is also returned.Parameters | |
---|---|
effect |
PathEffect : May be null. The patheffect to be installed in the paint |
Returns | |
---|---|
PathEffect |
effect |
public Shader setShader (Shader shader)
Set or clear the shader object.
Pass null to clear any previous shader. As a convenience, the parameter passed is also returned.Parameters | |
---|---|
shader |
Shader : May be null. the new shader to be installed in the paint |
Returns | |
---|---|
Shader |
shader |
public void setShadowLayer (float radius, float dx, float dy, int shadowColor)
This draws a shadow layer below the main layer, with the specified offset and color, and blur radius. If radius is 0, then the shadow layer is removed.
Can be used to create a blurred shadow underneath text. Support for use with other drawing operations is constrained to the software rendering pipeline.
The alpha of the shadow will be the paint's alpha if the shadow color is opaque, or the alpha from the shadow color if not.
Parameters | |
---|---|
radius |
float |
dx |
float |
dy |
float |
shadowColor |
int |
public void setShadowLayer (float radius, float dx, float dy, long shadowColor)
This draws a shadow layer below the main layer, with the specified offset and color, and blur radius. If radius is 0, then the shadow layer is removed.
Can be used to create a blurred shadow underneath text. Support for use with other drawing operations is constrained to the software rendering pipeline.
The alpha of the shadow will be the paint's alpha if the shadow color is opaque, or the alpha from the shadow color if not.
Parameters | |
---|---|
radius |
float |
dx |
float |
dy |
float |
shadowColor |
long |
Throws | |
---|---|
IllegalArgumentException |
if the color space encoded in the
ColorLong is invalid or unknown. |
public void setStartHyphenEdit (int startHyphen)
Set a start hyphen edit on the paint.
By setting start hyphen edit, the measurement and drawing is performed with modifying
hyphenation at the start of line. For example, by passing
START_HYPHEN_EDIT_INSERT_HYPHEN
like as follows, HYPHEN(U+2010)
character is appended at the start of line.
Paint paint = new Paint();
paint.setStartHyphenEdit(Paint.START_HYPHEN_EDIT_INSERT_HYPHEN);
paint.measureText("abc", 0, 3); // Returns the width of "-abc"
Canvas.drawText("abc", 0, 3, 0f, 0f, paint); // Draws "-abc"
The default value is 0 which is equivalent to
START_HYPHEN_EDIT_NO_EDIT
.
Parameters | |
---|---|
startHyphen |
int : a start hyphen edit value.
Value is START_HYPHEN_EDIT_NO_EDIT , START_HYPHEN_EDIT_INSERT_HYPHEN , or START_HYPHEN_EDIT_INSERT_ZWJ |
See also:
public void setStrikeThruText (boolean strikeThruText)
Helper for setFlags(), setting or clearing the STRIKE_THRU_TEXT_FLAG bit
Parameters | |
---|---|
strikeThruText |
boolean : true to set the strikeThruText bit in the paint's
flags, false to clear it. |
public void setStrokeCap (Paint.Cap cap)
Set the paint's Cap.
Parameters | |
---|---|
cap |
Paint.Cap : set the paint's line cap style, used whenever the paint's
style is Stroke or StrokeAndFill. |
public void setStrokeJoin (Paint.Join join)
Set the paint's Join.
Parameters | |
---|---|
join |
Paint.Join : set the paint's Join, used whenever the paint's style is
Stroke or StrokeAndFill. |
public void setStrokeMiter (float miter)
Set the paint's stroke miter value. This is used to control the behavior of miter joins when the joins angle is sharp. This value must be >= 0.
Parameters | |
---|---|
miter |
float : set the miter limit on the paint, used whenever the paint's
style is Stroke or StrokeAndFill. |
public void setStrokeWidth (float width)
Set the width for stroking. Pass 0 to stroke in hairline mode. Hairlines always draws a single pixel independent of the canvas's matrix.
Parameters | |
---|---|
width |
float : set the paint's stroke width, used whenever the paint's
style is Stroke or StrokeAndFill. |
public void setStyle (Paint.Style style)
Set the paint's style, used for controlling how primitives' geometries are interpreted (except for drawBitmap, which always assumes Fill).
Parameters | |
---|---|
style |
Paint.Style : The new style to set in the paint |
public void setSubpixelText (boolean subpixelText)
Helper for setFlags(), setting or clearing the SUBPIXEL_TEXT_FLAG bit
Parameters | |
---|---|
subpixelText |
boolean : true to set the subpixelText bit in the paint's
flags, false to clear it. |
public void setTextAlign (Paint.Align align)
Set the paint's text alignment. This controls how the text is positioned relative to its origin. LEFT align means that all of the text will be drawn to the right of its origin (i.e. the origin specifieds the LEFT edge of the text) and so on.
Parameters | |
---|---|
align |
Paint.Align : set the paint's Align value for drawing text. |
public void setTextLocale (Locale locale)
Set the text locale list to a one-member list consisting of just the locale.
See setTextLocales(android.os.LocaleList)
for how the locale list affects
the way the text is drawn for some languages.
Parameters | |
---|---|
locale |
Locale : the paint's locale value for drawing text, must not be null.
This value cannot be null . |
public void setTextLocales (LocaleList locales)
Set the text locale list.
The text locale list affects how the text is drawn for some languages.
For example, if the locale list contains Locale#CHINESE
or Locale#CHINA
,
then the text renderer will prefer to draw text using a Chinese font. Likewise,
if the locale list contains Locale#JAPANESE
or Locale#JAPAN
, then the text
renderer will prefer to draw text using a Japanese font. If the locale list contains both,
the order those locales appear in the list is considered for deciding the font.
This distinction is important because Chinese and Japanese text both use many
of the same Unicode code points but their appearance is subtly different for
each language.
By default, the text locale list is initialized to a one-member list just containing the
system locales. This assumes that the text to be rendered will most likely be in the user's
preferred language.
If the actual language or languages of the text is/are known, then they can be provided to
the text renderer using this method. The text renderer may attempt to guess the
language script based on the contents of the text to be drawn independent of
the text locale here. Specifying the text locales just helps it do a better
job in certain ambiguous cases.
Parameters | |
---|---|
locales |
LocaleList : the paint's locale list for drawing text, must not be null or empty.
This value cannot be null . |
public void setTextScaleX (float scaleX)
Set the paint's horizontal scale factor for text. The default value is 1.0. Values > 1.0 will stretch the text wider. Values < 1.0 will stretch the text narrower.
Parameters | |
---|---|
scaleX |
float : set the paint's scale in X for drawing/measuring text. |
public void setTextSize (float textSize)
Set the paint's text size. This value must be > 0
Parameters | |
---|---|
textSize |
float : set the paint's text size in pixel units. |
public void setTextSkewX (float skewX)
Set the paint's horizontal skew factor for text. The default value is 0. For approximating oblique text, use values around -0.25.
Parameters | |
---|---|
skewX |
float : set the paint's skew factor in X for drawing text. |
public Typeface setTypeface (Typeface typeface)
Set or clear the typeface object.
Pass null to clear any previous typeface. As a convenience, the parameter passed is also returned.Parameters | |
---|---|
typeface |
Typeface : May be null. The typeface to be installed in the paint |
Returns | |
---|---|
Typeface |
typeface |
public void setUnderlineText (boolean underlineText)
Helper for setFlags(), setting or clearing the UNDERLINE_TEXT_FLAG bit
Parameters | |
---|---|
underlineText |
boolean : true to set the underlineText bit in the paint's
flags, false to clear it. |
public void setWordSpacing (float wordSpacing)
Set the paint's extra word-spacing for text. Increases the white space width between words with the given amount of pixels. The default value is 0.
Parameters | |
---|---|
wordSpacing |
float : set the paint's extra word-spacing for drawing text in pixels.
This units of this value are pixels. |
See also:
public Xfermode setXfermode (Xfermode xfermode)
Set or clear the transfer mode object. A transfer mode defines how source pixels (generate by a drawing command) are composited with the destination pixels (content of the render target).
Pass null to clear any previous transfer mode. As a convenience, the parameter passed is also returned.PorterDuffXfermode
is the most common transfer mode.
Parameters | |
---|---|
xfermode |
Xfermode : May be null. The xfermode to be installed in the paint |
Returns | |
---|---|
Xfermode |
xfermode |