CustomCanvas class

Implemented types

• Canvas

Constructors

CustomCanvas(dynamic addSkeleton(Rect, Color?))

Properties

addSkeleton → dynamic Function(Rect, Color?)

final

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

clipPath(Path path, {bool doAntiAlias = true}) → void

Reduces the clip region to the intersection of the current clip and the given Path.

override

clipRect(Rect rect, {ClipOp clipOp = ClipOp.intersect, bool doAntiAlias = true}) → void

Reduces the clip region to the intersection of the current clip and the given rectangle.

override

clipRRect(RRect rrect, {bool doAntiAlias = true}) → void

Reduces the clip region to the intersection of the current clip and the given rounded rectangle.

override

drawArc(Rect rect, double startAngle, double sweepAngle, bool useCenter, Paint paint) → void

Draw an arc scaled to fit inside the given rectangle.

override

drawAtlas(Image atlas, List<RSTransform> transforms, List<Rect> rects, List<Color>? colors, BlendMode? blendMode, Rect? cullRect, Paint paint) → void

Draws many parts of an image - the atlas - onto the canvas.

override

drawCircle(Offset c, double radius, Paint paint) → void

Draws a circle centered at the point given by the first argument and that has the radius given by the second argument, with the Paint given in the third argument. Whether the circle is filled or stroked (or both) is controlled by Paint.style.

override

drawColor(Color color, BlendMode blendMode) → void

Paints the given Color onto the canvas, applying the given BlendMode, with the given color being the source and the background being the destination.

override

drawDRRect(RRect outer, RRect inner, Paint paint) → void

Draws a shape consisting of the difference between two rounded rectangles with the given Paint. Whether this shape is filled or stroked (or both) is controlled by Paint.style.

override

drawImage(Image image, Offset offset, Paint paint) → void

Draws the given Image into the canvas with its top-left corner at the given Offset. The image is composited into the canvas using the given Paint.

override

drawImageNine(Image image, Rect center, Rect dst, Paint paint) → void

Draws the given Image into the canvas using the given Paint.

override

drawImageRect(Image image, Rect src, Rect dst, Paint paint) → void

Draws the subset of the given image described by the src argument into the canvas in the axis-aligned rectangle given by the dst argument.

override

drawLine(Offset p1, Offset p2, Paint paint) → void

Draws a line between the given points using the given paint. The line is stroked, the value of the Paint.style is ignored for this call.

override

drawOval(Rect rect, Paint paint) → void

Draws an axis-aligned oval that fills the given axis-aligned rectangle with the given Paint. Whether the oval is filled or stroked (or both) is controlled by Paint.style.

override

drawPaint(Paint paint) → void

Fills the canvas with the given Paint.

override

drawParagraph(Paragraph paragraph, Offset offset) → void

Draws the text in the given Paragraph into this canvas at the given Offset.

override

drawPath(Path path, Paint paint) → void

Draws the given Path with the given Paint.

override

drawPicture(Picture picture) → void

Draw the given picture onto the canvas. To create a picture, see PictureRecorder.

override

drawPoints(PointMode pointMode, List<Offset> points, Paint paint) → void

Draws a sequence of points according to the given PointMode.

override

drawRawAtlas(Image atlas, Float32List rstTransforms, Float32List rects, Int32List? colors, BlendMode? blendMode, Rect? cullRect, Paint paint) → void

Draws many parts of an image - the atlas - onto the canvas.

override

drawRawPoints(PointMode pointMode, Float32List points, Paint paint) → void

Draws a sequence of points according to the given PointMode.

override

drawRect(Rect rect, Paint paint) → void

Draws a rectangle with the given Paint. Whether the rectangle is filled or stroked (or both) is controlled by Paint.style.

override

drawRRect(RRect rrect, Paint paint) → void

Draws a rounded rectangle with the given Paint. Whether the rectangle is filled or stroked (or both) is controlled by Paint.style.

override

drawShadow(Path path, Color color, double elevation, bool transparentOccluder) → void

Draws a shadow for a Path representing the given material elevation.

override

drawVertices(Vertices vertices, BlendMode blendMode, Paint paint) → void

Draws a set of Vertices onto the canvas as one or more triangles.

override

getColorFromPaint(Paint paint) → Future<Color?>

getDestinationClipBounds() → Rect

Returns the conservative bounds of the combined result of all clip methods executed within the current save stack of this Canvas object, as measured in the destination coordinate space in which the Picture will be rendered.

override

getLocalClipBounds() → Rect

Returns the conservative bounds of the combined result of all clip methods executed within the current save stack of this Canvas object, as measured in the local coordinate space under which rendering operations are currently performed.

override

getSaveCount() → int

Returns the number of items on the save stack, including the initial state. This means it returns 1 for a clean canvas, and that each call to save and saveLayer increments it, and that each matching call to restore decrements it.

override

getTransform() → Float64List

Returns the current transform including the combined result of all transform methods executed since the creation of this Canvas object, and respecting the save/restore history.

override

mixColors(List<Color> colors) → Color

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

restore() → void

Pops the current save stack, if there is anything to pop. Otherwise, does nothing.

override

restoreToCount(int count) → void

Restores the save stack to a previous level as might be obtained from getSaveCount. If count is less than 1, the stack is restored to its initial state. If count is greater than the current getSaveCount then nothing happens.

override

rotate(double radians) → void

Add a rotation to the current transform. The argument is in radians clockwise.

override

save() → void

Saves a copy of the current transform and clip on the save stack.

override

saveLayer(Rect? bounds, Paint paint) → void

Saves a copy of the current transform and clip on the save stack, and then creates a new group which subsequent calls will become a part of. When the save stack is later popped, the group will be flattened into a layer and have the given paint's Paint.colorFilter and Paint.blendMode applied.

override

scale(double sx, [double? sy]) → void

Add an axis-aligned scale to the current transform, scaling by the first argument in the horizontal direction and the second in the vertical direction.

override

skew(double sx, double sy) → void

Add an axis-aligned skew to the current transform, with the first argument being the horizontal skew in rise over run units clockwise around the origin, and the second argument being the vertical skew in rise over run units clockwise around the origin.

override

toString() → String

A string representation of this object.

inherited

transform(Float64List matrix4) → void

Multiply the current transform by the specified 4⨉4 transformation matrix specified as a list of values in column-major order.

override

translate(double dx, double dy) → void

Add a translation to the current transform, shifting the coordinate space horizontally by the first argument and vertically by the second argument.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited