Paint

Paint flag that enables antialiasing when drawing.

Enabling this flag will cause all draw operations that support antialiasing to use it.

Legacy Paint flag, no longer used.

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.

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.

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.

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.

Font hinter option that disables font hinting.

Font hinter option that enables font hinting.

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.

Paint flag that applies a strike-through decoration to drawn text.

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.

Paint flag that applies an underline decoration to drawn text.

Create a new paint with default settings.

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

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

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

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.

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.

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.

Clear the shadow layer.

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

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).

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.

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

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).

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

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.

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

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().

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

Return the paint's hinting mode. Returns either HINTING_OFF or HINTING_ON .

Get the paint's maskfilter object.

Get the paint's patheffect object.

Get the paint's rasterizer (or null).

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

Get the paint's shader object.

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

Return the paint's stroke join type.

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

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.

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

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.

Return in bounds (allocated by the caller) the smallest rectangle that encloses all of the characters, with an implied origin at (0,0).

Return in bounds (allocated by the caller) the smallest rectangle that encloses all of the characters, with an implied origin at (0,0).

Get the text Locale.

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

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

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

Return the paint's text size.

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

Return the advance widths for the characters in the string.

Return the advance widths for the characters in the string.

Return the advance widths for the characters in the string.

Return the advance widths for the characters in the string.

Get the paint's typeface object.

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

Get the paint's xfermode object.

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.

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.

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

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.

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

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

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

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

Return the width of the text.

Return the width of the text.

Return the width of the text.

Return the width of the text.

Restores the paint to its default settings.

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.

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

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]

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.

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.

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

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.

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

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.

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

Set the paint's hinting mode. May be either HINTING_OFF or HINTING_ON .

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

Set or clear the maskfilter object.

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

Set or clear the patheffect object.

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

Set or clear the rasterizer object.

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

Set or clear the shader object.

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

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.

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

Set the paint's Cap.

Set the paint's Join.

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.

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

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

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

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.

Set the text locale. The text locale affects how the text is drawn for some languages. For example, if the locale is CHINESE or CHINA , then the text renderer will prefer to draw text using a Chinese font. Likewise, if the locale is JAPANESE or JAPAN , then the text renderer will prefer to draw text using a Japanese 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 is initialized to the system locale (as returned by getDefault() ). This assumes that the text to be rendered will most likely be in the user's preferred language. If the actual language of the text is known, then it 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 locale just helps it do a better job in certain ambiguous cases

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.

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

Set the paint's horizontal skew factor for text. The default value is 0. For approximating oblique text, use values around -0.25.

Set or clear the typeface object.

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

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

Set or clear the xfermode object.

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

Invoked when the garbage collector has detected that this instance is no longer reachable. The default implementation does nothing, but this method can be overridden to free resources.

Note that objects that override finalize are significantly more expensive than objects that don't. Finalizers may be run a long time after the object is no longer reachable, depending on memory pressure, so it's a bad idea to rely on them for cleanup. Note also that finalizers are run on a single VM-wide finalizer thread, so doing blocking work in a finalizer is a bad idea. A finalizer is usually only necessary for a class that has a native peer and needs to call a native method to destroy that peer. Even then, it's better to provide an explicit close method (and implement Closeable ), and insist that callers manually dispose of instances. This works well for something like files, but less well for something like a BigInteger where typical calling code would have to deal with lots of temporaries. Unfortunately, code that creates lots of temporaries is the worst kind of code from the point of view of the single finalizer thread.

If you must use finalizers, consider at least providing your own ReferenceQueue and having your own thread process that queue.

Unlike constructors, finalizers are not automatically chained. You are responsible for calling super.finalize() yourself.

Uncaught exceptions thrown by finalizers are ignored and do not terminate the finalizer thread. See Effective Java Item 7, "Avoid finalizers" for more.