public class

Paint

extends Object
java.lang.Object
   ↳ android.graphics.Paint
Known Direct Subclasses

Class Overview

The Paint class holds the style and color information about how to draw geometries, text and bitmaps.

Summary

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 bit mask for the flag enabling antialiasing
int DEV_KERN_TEXT_FLAG bit mask for the flag enabling device kerning for text
int DITHER_FLAG bit mask for the flag enabling dithering
int FAKE_BOLD_TEXT_FLAG bit mask for the flag enabling fake-bold text
int FILTER_BITMAP_FLAG bit mask for the flag enabling bitmap filtering
int LINEAR_TEXT_FLAG bit mask for the flag enabling linear-text (no caching)
int STRIKE_THRU_TEXT_FLAG bit mask for the flag enabling strike-thru text
int SUBPIXEL_TEXT_FLAG bit mask for the flag enabling subpixel-text
int UNDERLINE_TEXT_FLAG bit mask for the flag enabling underline 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(CharSequence text, int start, int end, boolean measureForwards, float maxWidth, float[] measuredWidth)
Measure the text, stopping early if the measured width exceeds maxWidth.
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.
void clearShadowLayer()
Temporary API to clear the shadow layer.
float descent()
Return the distance below (positive) the baseline (descent) based on the current typeface and text size.
int getAlpha()
Helper to getColor() that just returns the color's alpha value.
int getColor()
Return the paint's color.
ColorFilter getColorFilter()
Get the paint's colorfilter (maybe be null).
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.
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.
Paint.FontMetricsInt getFontMetricsInt()
int getFontMetricsInt(Paint.FontMetricsInt fmi)
Return the font's interline spacing, given the Paint's settings for typeface, textSize, etc.
float getFontSpacing()
Return the recommend line spacing based on the current typeface and text size.
MaskFilter getMaskFilter()
Get the paint's maskfilter object.
PathEffect getPathEffect()
Get the paint's patheffect object.
Rasterizer getRasterizer()
Get the paint's rasterizer (or null).
Shader getShader()
Get the paint's shader object.
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(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).
void getTextBounds(String text, int start, int end, 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).
void getTextPath(String text, int start, int end, float x, float y, Path path)
Return the path (outline) for the specified text.
void getTextPath(char[] text, int index, int count, float x, float y, Path path)
Return the path (outline) for the specified text.
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(CharSequence text, int start, int end, float[] widths)
Return the advance widths for the characters in the string.
int getTextWidths(char[] text, int index, int count, 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(String text, float[] widths)
Return the advance widths for the characters in the string.
Typeface getTypeface()
Get the paint's typeface object.
Xfermode getXfermode()
Get the paint's xfermode object.
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.
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(String text, int start, int end)
Return the width of the text.
float measureText(CharSequence 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 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 setFakeBoldText(boolean fakeBoldText)
Helper for setFlags(), setting or clearing the STRIKE_THRU_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 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.
Rasterizer setRasterizer(Rasterizer rasterizer)
Set or clear the rasterizer object.
Shader setShader(Shader shader)
Set or clear the shader object.
void setShadowLayer(float radius, float dx, float dy, int color)
Temporary API to expose layer drawing.
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 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
Xfermode setXfermode(Xfermode xfermode)
Set or clear the xfermode object.
Protected Methods
void finalize()
Is called before the object's memory is being reclaimed by the VM.
[Expand]
Inherited Methods
From class java.lang.Object

Constants

public static final int ANTI_ALIAS_FLAG

Since: API Level 1

bit mask for the flag enabling antialiasing

Constant Value: 1 (0x00000001)

public static final int DEV_KERN_TEXT_FLAG

Since: API Level 1

bit mask for the flag enabling device kerning for text

Constant Value: 256 (0x00000100)

public static final int DITHER_FLAG

Since: API Level 1

bit mask for the flag enabling dithering

Constant Value: 4 (0x00000004)

public static final int FAKE_BOLD_TEXT_FLAG

Since: API Level 1

bit mask for the flag enabling fake-bold text

Constant Value: 32 (0x00000020)

public static final int FILTER_BITMAP_FLAG

Since: API Level 1

bit mask for the flag enabling bitmap filtering

Constant Value: 2 (0x00000002)

public static final int LINEAR_TEXT_FLAG

Since: API Level 1

bit mask for the flag enabling linear-text (no caching)

Constant Value: 64 (0x00000040)

public static final int STRIKE_THRU_TEXT_FLAG

Since: API Level 1

bit mask for the flag enabling strike-thru text

Constant Value: 16 (0x00000010)

public static final int SUBPIXEL_TEXT_FLAG

Since: API Level 1

bit mask for the flag enabling subpixel-text

Constant Value: 128 (0x00000080)

public static final int UNDERLINE_TEXT_FLAG

Since: API Level 1

bit mask for the flag enabling underline text

Constant Value: 8 (0x00000008)

Public Constructors

public Paint ()

Since: API Level 1

Create a new paint with default settings.

public Paint (int flags)

Since: API Level 1

Create a new paint with the specified flags. Use setFlags() to change these after the paint is created.

Parameters
flags initial flag bits, as if they were passed via setFlags().

public Paint (Paint paint)

Since: API Level 1

Create a new paint, initialized with the attributes in the specified paint parameter.

Parameters
paint Existing paint used to initialized the attributes of the new paint.

Public Methods

public float ascent ()

Since: API Level 1

Return the distance above (negative) the baseline (ascent) based on the current typeface and text size.

Returns
  • the distance above (negative) the baseline (ascent) based on the current typeface and text size.

public int breakText (CharSequence text, int start, int end, boolean measureForwards, float maxWidth, float[] measuredWidth)

Since: API Level 1

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 The text to measure
start The offset into text to begin measuring at
end The end of the text slice to measure.
measureForwards If true, measure forwards, starting at start. Otherwise, measure backwards, starting with end.
maxWidth The maximum width to accumulate.
measuredWidth Optional. If not null, returns the actual width measured.
Returns
  • The number of chars that were measured. Will always be <= abs(end - start).

public int breakText (char[] text, int index, int count, float maxWidth, float[] measuredWidth)

Since: API Level 1

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 The text to measure
index The offset into text to begin measuring at
count The number of maximum number of entries to measure. If count is negative, then the characters before index are measured in reverse order. This allows for measuring the end of string.
maxWidth The maximum width to accumulate.
measuredWidth Optional. If not null, returns the actual width measured.
Returns
  • The number of chars that were measured. Will always be <= abs(count).

public int breakText (String text, boolean measureForwards, float maxWidth, float[] measuredWidth)

Since: API Level 1

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 The text to measure
measureForwards If true, measure forwards, starting with the first character in the string. Otherwise, measure backwards, starting with the last character in the string.
maxWidth The maximum width to accumulate.
measuredWidth Optional. If not null, returns the actual width measured.
Returns
  • The number of chars that were measured. Will always be <= abs(count).

public void clearShadowLayer ()

Since: API Level 1

Temporary API to clear the shadow layer.

public float descent ()

Since: API Level 1

Return the distance below (positive) the baseline (descent) based on the current typeface and text size.

Returns
  • the distance below (positive) the baseline (descent) based on the current typeface and text size.

public int getAlpha ()

Since: API Level 1

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
  • the alpha component of the paint's color.

public int getColor ()

Since: API Level 1

Return the paint's color. 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
  • the paint's color (and alpha).

public ColorFilter getColorFilter ()

Since: API Level 1

Get the paint's colorfilter (maybe be null).

Returns
  • the paint's colorfilter (maybe be null)

public boolean getFillPath (Path src, Path dst)

Since: API Level 1

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 input path
dst output path (may be the same as src)
Returns
  • true if the path should be filled, or false if it should be drawn with a hairline (width == 0)

public int getFlags ()

Since: API Level 1

Return the paint's flags. Use the Flag enum to test flag values.

Returns
  • the paint's flags (see enums ending in _Flag for bit masks)

public float getFontMetrics (Paint.FontMetrics metrics)

Since: API Level 1

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.

Parameters
metrics If this object is not null, its fields are filled with the appropriate values given the paint's text attributes.
Returns
  • the font's recommended interline spacing.

public Paint.FontMetrics getFontMetrics ()

Since: API Level 1

Allocates a new FontMetrics object, and then calls getFontMetrics(fm) with it, returning the object.

public Paint.FontMetricsInt getFontMetricsInt ()

Since: API Level 1

public int getFontMetricsInt (Paint.FontMetricsInt fmi)

Since: API Level 1

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().

Returns
  • the font's interline spacing.

public float getFontSpacing ()

Since: API Level 1

Return the recommend line spacing based on the current typeface and text size.

Returns
  • recommend line spacing based on the current typeface and text size.

public MaskFilter getMaskFilter ()

Since: API Level 1

Get the paint's maskfilter object.

Returns
  • the paint's maskfilter (or null)

public PathEffect getPathEffect ()

Since: API Level 1

Get the paint's patheffect object.

Returns
  • the paint's patheffect (or null)

public Rasterizer getRasterizer ()

Since: API Level 1

Get the paint's rasterizer (or null).

The raster controls/modifies how paths/text are turned into alpha masks.

Returns
  • the paint's rasterizer (or null)

public Shader getShader ()

Since: API Level 1

Get the paint's shader object.

Returns
  • the paint's shader (or null)

public Paint.Cap getStrokeCap ()

Since: API Level 1

Return the paint's Cap, controlling how the start and end of stroked lines and paths are treated.

Returns
  • the line cap style for the paint, used whenever the paint's style is Stroke or StrokeAndFill.

public Paint.Join getStrokeJoin ()

Since: API Level 1

Return the paint's stroke join type.

Returns
  • the paint's Join.

public float getStrokeMiter ()

Since: API Level 1

Return the paint's stroke miter value. Used to control the behavior of miter joins when the joins angle is sharp.

Returns
  • the paint's miter limit, used whenever the paint's style is Stroke or StrokeAndFill.

public float getStrokeWidth ()

Since: API Level 1

Return the width for stroking.

A value of 0 strokes in hairline mode. Hairlines always draws a single pixel independent of the canva's matrix.

Returns
  • the paint's stroke width, used whenever the paint's style is Stroke or StrokeAndFill.

public Paint.Style getStyle ()

Since: API Level 1

Return the paint's style, used for controlling how primitives' geometries are interpreted (except for drawBitmap, which always assumes FILL_STYLE).

Returns
  • the paint's style setting (Fill, Stroke, StrokeAndFill)

public Paint.Align getTextAlign ()

Since: API Level 1

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
  • the paint's Align value for drawing text.

public void getTextBounds (char[] text, int index, int count, Rect bounds)

Since: API Level 1

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 Array of chars to measure and return their unioned bounds
index Index of the first char in the array to measure
count The number of chars, beginning at index, to measure
bounds Returns the unioned bounds of all the text. Must be allocated by the caller.

public void getTextBounds (String text, int start, int end, Rect bounds)

Since: API Level 1

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 to measure and return its bounds
start Index of the first char in the string to measure
end 1 past the last char in the string measure
bounds Returns the unioned bounds of all the text. Must be allocated by the caller.

public void getTextPath (String text, int start, int end, float x, float y, Path path)

Since: API Level 1

Return the path (outline) for the specified text. Note: just like Canvas.drawText, this will respect the Align setting in the paint.

Parameters
text The text to retrieve the path from
start The first character in the text
end 1 past the last charcter in the text
x The x coordinate of the text's origin
y The y coordinate of the text's origin
path The path to receive the data describing the text. Must be allocated by the caller.

public void getTextPath (char[] text, int index, int count, float x, float y, Path path)

Since: API Level 1

Return the path (outline) for the specified text. Note: just like Canvas.drawText, this will respect the Align setting in the paint.

Parameters
text The text to retrieve the path from
index The index of the first character in text
count The number of characterss starting with index
x The x coordinate of the text's origin
y The y coordinate of the text's origin
path The path to receive the data describing the text. Must be allocated by the caller.

public float getTextScaleX ()

Since: API Level 1

Return the paint's horizontal scale factor for text. The default value is 1.0.

Returns
  • the paint's scale factor in X for drawing/measuring text

public float getTextSize ()

Since: API Level 1

Return the paint's text size.

Returns
  • the paint's text size.

public float getTextSkewX ()

Since: API Level 1

Return the paint's horizontal skew factor for text. The default value is 0.

Returns
  • the paint's skew factor in X for drawing text.

public int getTextWidths (CharSequence text, int start, int end, float[] widths)

Since: API Level 1

Return the advance widths for the characters in the string.

Parameters
text The text to measure
start The index of the first char to to measure
end The end of the text slice to measure
widths array to receive the advance widths of the characters. Must be at least a large as (end - start).
Returns
  • the actual number of widths returned.

public int getTextWidths (char[] text, int index, int count, float[] widths)

Since: API Level 1

Return the advance widths for the characters in the string.

Parameters
text The text to measure
index The index of the first char to to measure
count The number of chars starting with index to measure
widths array to receive the advance widths of the characters. Must be at least a large as count.
Returns
  • the actual number of widths returned.

public int getTextWidths (String text, int start, int end, float[] widths)

Since: API Level 1

Return the advance widths for the characters in the string.

Parameters
text The text to measure
start The index of the first char to to measure
end The end of the text slice to measure
widths array to receive the advance widths of the characters. Must be at least a large as the text.
Returns
  • the number of unichars in the specified text.

public int getTextWidths (String text, float[] widths)

Since: API Level 1

Return the advance widths for the characters in the string.

Parameters
text The text to measure
widths array to receive the advance widths of the characters. Must be at least a large as the text.
Returns
  • the number of unichars in the specified text.

public Typeface getTypeface ()

Since: API Level 1

Get the paint's typeface object.

The typeface object identifies which font to use when drawing or measuring text.

Returns
  • the paint's typeface (or null)

public Xfermode getXfermode ()

Since: API Level 1

Get the paint's xfermode object.

Returns
  • the paint's xfermode (or null)

public final boolean isAntiAlias ()

Since: API Level 1

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
  • true if the antialias bit is set in the paint's flags.

public final boolean isDither ()

Since: API Level 1

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
  • true if the dithering bit is set in the paint's flags.

public final boolean isFakeBoldText ()

Since: API Level 1

Helper for getFlags(), returning true if FAKE_BOLD_TEXT_FLAG bit is set

Returns
  • true if the fakeBoldText bit is set in the paint's flags.

public final boolean isFilterBitmap ()

Since: API Level 1

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.

public final boolean isLinearText ()

Since: API Level 1

Helper for getFlags(), returning true if LINEAR_TEXT_FLAG bit is set

Returns
  • true if the lineartext bit is set in the paint's flags

public final boolean isStrikeThruText ()

Since: API Level 1

Helper for getFlags(), returning true if STRIKE_THRU_TEXT_FLAG bit is set

Returns
  • true if the strikeThruText bit is set in the paint's flags.

public final boolean isSubpixelText ()

Since: API Level 1

Helper for getFlags(), returning true if SUBPIXEL_TEXT_FLAG bit is set

Returns
  • true if the subpixel bit is set in the paint's flags

public final boolean isUnderlineText ()

Since: API Level 1

Helper for getFlags(), returning true if UNDERLINE_TEXT_FLAG bit is set

Returns
  • true if the underlineText bit is set in the paint's flags.

public float measureText (char[] text, int index, int count)

Since: API Level 1

Return the width of the text.

Parameters
text The text to measure
index The index of the first character to start measuring
count THe number of characters to measure, beginning with start
Returns
  • The width of the text

public float measureText (String text, int start, int end)

Since: API Level 1

Return the width of the text.

Parameters
text The text to measure
start The index of the first character to start measuring
end 1 beyond the index of the last character to measure
Returns
  • The width of the text

public float measureText (CharSequence text, int start, int end)

Since: API Level 1

Return the width of the text.

Parameters
text The text to measure
start The index of the first character to start measuring
end 1 beyond the index of the last character to measure
Returns
  • The width of the text

public float measureText (String text)

Since: API Level 1

Return the width of the text.

Parameters
text The text to measure
Returns
  • The width of the text

public void reset ()

Since: API Level 1

Restores the paint to its default settings.

public void set (Paint src)

Since: API Level 1

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.

public void setARGB (int a, int r, int g, int b)

Since: API Level 1

Helper to setColor(), that takes a,r,g,b and constructs the color int

Parameters
a The new alpha component (0..255) of the paint's color.
r The new red component (0..255) of the paint's color.
g The new green component (0..255) of the paint's color.
b The new blue component (0..255) of the paint's color.

public void setAlpha (int a)

Since: API Level 1

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 set the alpha component [0..255] of the paint's color.

public void setAntiAlias (boolean aa)

Since: API Level 1

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 true to set the antialias bit in the flags, false to clear it

public void setColor (int color)

Since: API Level 1

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 The new color (including alpha) to set in the paint.

public ColorFilter setColorFilter (ColorFilter filter)

Since: API Level 1

Set or clear the paint's colorfilter, returning the parameter.

Parameters
filter May be null. The new filter to be installed in the paint
Returns
  • filter

public void setDither (boolean dither)

Since: API Level 1

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 true to set the dithering bit in flags, false to clear it

public void setFakeBoldText (boolean fakeBoldText)

Since: API Level 1

Helper for setFlags(), setting or clearing the STRIKE_THRU_TEXT_FLAG bit

Parameters
fakeBoldText true to set the fakeBoldText bit in the paint's flags, false to clear it.

public void setFilterBitmap (boolean filter)

Since: API Level 1

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 true to set the FILTER_BITMAP_FLAG bit in the paint's flags, false to clear it.

public void setFlags (int flags)

Since: API Level 1

Set the paint's flags. Use the Flag enum to specific flag values.

Parameters
flags The new flag bits for the paint

public void setLinearText (boolean linearText)

Since: API Level 1

Helper for setFlags(), setting or clearing the LINEAR_TEXT_FLAG bit

Parameters
linearText true to set the linearText bit in the paint's flags, false to clear it.

public MaskFilter setMaskFilter (MaskFilter maskfilter)

Since: API Level 1

Set or clear the maskfilter object.

Pass null to clear any previous maskfilter. As a convenience, the parameter passed is also returned.

Parameters
maskfilter May be null. The maskfilter to be installed in the paint
Returns
  • maskfilter

public PathEffect setPathEffect (PathEffect effect)

Since: API Level 1

Set or clear the patheffect object.

Pass null to clear any previous patheffect. As a convenience, the parameter passed is also returned.

Parameters
effect May be null. The patheffect to be installed in the paint
Returns
  • effect

public Rasterizer setRasterizer (Rasterizer rasterizer)

Since: API Level 1

Set or clear the rasterizer object.

Pass null to clear any previous rasterizer. As a convenience, the parameter passed is also returned.

Parameters
rasterizer May be null. The new rasterizer to be installed in the paint.
Returns
  • rasterizer

public Shader setShader (Shader shader)

Since: API Level 1

Set or clear the shader object.

Pass null to clear any previous shader. As a convenience, the parameter passed is also returned.

Parameters
shader May be null. the new shader to be installed in the paint
Returns
  • shader

public void setShadowLayer (float radius, float dx, float dy, int color)

Since: API Level 1

Temporary API to expose layer drawing. 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.

public void setStrikeThruText (boolean strikeThruText)

Since: API Level 1

Helper for setFlags(), setting or clearing the STRIKE_THRU_TEXT_FLAG bit

Parameters
strikeThruText true to set the strikeThruText bit in the paint's flags, false to clear it.

public void setStrokeCap (Paint.Cap cap)

Since: API Level 1

Set the paint's Cap.

Parameters
cap set the paint's line cap style, used whenever the paint's style is Stroke or StrokeAndFill.

public void setStrokeJoin (Paint.Join join)

Since: API Level 1

Set the paint's Join.

Parameters
join set the paint's Join, used whenever the paint's style is Stroke or StrokeAndFill.

public void setStrokeMiter (float miter)

Since: API Level 1

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 set the miter limit on the paint, used whenever the paint's style is Stroke or StrokeAndFill.

public void setStrokeWidth (float width)

Since: API Level 1

Set the width for stroking. Pass 0 to stroke in hairline mode. Hairlines always draws a single pixel independent of the canva's matrix.

Parameters
width set the paint's stroke width, used whenever the paint's style is Stroke or StrokeAndFill.

public void setStyle (Paint.Style style)

Since: API Level 1

Set the paint's style, used for controlling how primitives' geometries are interpreted (except for drawBitmap, which always assumes Fill).

Parameters
style The new style to set in the paint

public void setSubpixelText (boolean subpixelText)

Since: API Level 1

Helper for setFlags(), setting or clearing the SUBPIXEL_TEXT_FLAG bit

Parameters
subpixelText true to set the subpixelText bit in the paint's flags, false to clear it.

public void setTextAlign (Paint.Align align)

Since: API Level 1

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 set the paint's Align value for drawing text.

public void setTextScaleX (float scaleX)

Since: API Level 1

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 set the paint's scale in X for drawing/measuring text.

public void setTextSize (float textSize)

Since: API Level 1

Set the paint's text size. This value must be > 0

Parameters
textSize set the paint's text size.

public void setTextSkewX (float skewX)

Since: API Level 1

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 set the paint's skew factor in X for drawing text.

public Typeface setTypeface (Typeface typeface)

Since: API Level 1

Set or clear the typeface object.

Pass null to clear any previous typeface. As a convenience, the parameter passed is also returned.

Parameters
typeface May be null. The typeface to be installed in the paint
Returns
  • typeface

public void setUnderlineText (boolean underlineText)

Since: API Level 1

Helper for setFlags(), setting or clearing the UNDERLINE_TEXT_FLAG bit

Parameters
underlineText true to set the underlineText bit in the paint's flags, false to clear it.

public Xfermode setXfermode (Xfermode xfermode)

Since: API Level 1

Set or clear the xfermode object.

Pass null to clear any previous xfermode. As a convenience, the parameter passed is also returned.

Parameters
xfermode May be null. The xfermode to be installed in the paint
Returns
  • xfermode

Protected Methods

protected void finalize ()

Since: API Level 1

Is called before the object's memory is being reclaimed by the VM. This can only happen once the VM has detected, during a run of the garbage collector, that the object is no longer reachable by any thread of the running application.

The method can be used to free system resources or perform other cleanup before the object is garbage collected. The default implementation of the method is empty, which is also expected by the VM, but subclasses can override finalize() as required. Uncaught exceptions which are thrown during the execution of this method cause it to terminate immediately but are otherwise ignored.

Note that the VM does guarantee that finalize() is called at most once for any object, but it doesn't guarantee when (if at all) finalize() will be called. For example, object B's finalize() can delay the execution of object A's finalize() method and therefore it can delay the reclamation of A's memory. To be safe, use a ReferenceQueue, because it provides more control over the way the VM deals with references during garbage collection.

Throws
Throwable