public class NoOpRenderingBackend extends Object implements RenderingBackend
RenderingBackend
.RenderingBackend.WindingRule
Constructor and Description |
---|
NoOpRenderingBackend(int imageWidth,
int imageHeight)
Constructor.
|
Modifier and Type | Method and Description |
---|---|
void |
arc(double x,
double y,
double radius,
double startAngle,
double endAngle,
boolean anticlockwise)
Adds a circular arc to the current sub-path.
|
void |
beginPath()
Starts a new path by emptying the list of sub-paths.
|
void |
bezierCurveTo(double cp1x,
double cp1y,
double cp2x,
double cp2y,
double x,
double y)
Adds a cubic Bézier curve to the current sub-path.
|
void |
clearRect(double x,
double y,
double w,
double h)
Paints the specified rectangular area.
|
void |
clip(RenderingBackend.WindingRule windingRule,
Path2D path)
Turns the current or given path into the current clipping region.
|
void |
closePath()
Attempts to add a straight line from the current point to the start of the current sub-path.
|
void |
drawImage(ImageData imageData,
int sx,
int sy,
Integer sWidth,
Integer sHeight,
int dx,
int dy,
Integer dWidth,
Integer dHeight)
Draws images onto the context.
|
void |
ellipse(double x,
double y,
double radiusX,
double radiusY,
double rotation,
double startAngle,
double endAngle,
boolean anticlockwise)
Creates an elliptical arc centered at (x, y) with the radii radiusX and radiusY.
|
String |
encodeToString(String type)
Constructs a base64 encoded string out of the image data.
|
void |
fill()
Fills the current or given path with the current fillStyle.
|
void |
fillRect(int x,
int y,
int w,
int h)
Paints the specified rectangular area.
|
void |
fillText(String text,
double x,
double y)
Fills a given text at the given (x, y) position.
|
byte[] |
getBytes(int width,
int height,
int sx,
int sy)
Creates a byte array containing the (4) color values of all pixels.
|
double |
getGlobalAlpha() |
int |
getLineWidth()
Returns the
lineWidth property. |
void |
lineTo(double x,
double y)
Adds a straight line to the current sub-path by connecting the
sub-path's last point to the specified (x, y) coordinates.
|
void |
moveTo(double x,
double y)
Begins a new sub-path at the point specified
by the given (x, y) coordinates.
|
void |
putImageData(byte[] imageDataBytes,
int imageDataHeight,
int imageDataWidth,
int dx,
int dy,
int dirtyX,
int dirtyY,
int dirtyWidth,
int dirtyHeight)
Paints data from the given ImageData object onto the canvas.
|
void |
quadraticCurveTo(double cpx,
double cpy,
double x,
double y)
Adds a quadratic Bézier curve to the current sub-path.
|
void |
rect(double x,
double y,
double w,
double h)
Adds a rectangle to the current path.
|
void |
restore()
Restores the most recently saved canvas state by popping the top
entry in the drawing state stack.
|
void |
rotate(double angle)
Adds a rotation to the transformation matrix.
|
void |
save()
Saves the entire state of the canvas by pushing
the current state onto a stack.
|
void |
setFillStyle(String fillStyle)
Sets the
fillStyle property. |
void |
setGlobalAlpha(double globalAlpha)
Specifies the alpha (transparency) value that is applied to shapes and images
before they are drawn onto the canvas.
|
void |
setLineWidth(int lineWidth)
Sets the
lineWidth property. |
void |
setStrokeStyle(String strokeStyle)
Sets the
strokeStyle property. |
void |
setTransform(double m11,
double m12,
double m21,
double m22,
double dx,
double dy)
Resets (overrides) the current transformation to the identity matrix,
and then invokes a transformation described by the arguments of this method.
|
void |
stroke()
Strokes (outlines) the current or given path with the current stroke style.
|
void |
strokeRect(int x,
int y,
int w,
int h)
Paints the specified rectangular area.
|
void |
transform(double m11,
double m12,
double m21,
double m22,
double dx,
double dy)
Multiplies the current transformation with the matrix described by the
arguments of this method.
|
void |
translate(int x,
int y)
Adds a translation transformation to the current matrix.
|
public NoOpRenderingBackend(int imageWidth, int imageHeight)
imageWidth
- the widthimageHeight
- the heightpublic double getGlobalAlpha()
getGlobalAlpha
in interface RenderingBackend
public void setGlobalAlpha(double globalAlpha)
setGlobalAlpha
in interface RenderingBackend
globalAlpha
- the new alphapublic void beginPath()
beginPath
in interface RenderingBackend
public void ellipse(double x, double y, double radiusX, double radiusY, double rotation, double startAngle, double endAngle, boolean anticlockwise)
ellipse
in interface RenderingBackend
x
- the xy
- the yradiusX
- the radiusXradiusY
- the radiusYrotation
- the rotationstartAngle
- the start angleendAngle
- the end angleanticlockwise
- is anti-clockwisepublic void bezierCurveTo(double cp1x, double cp1y, double cp2x, double cp2y, double x, double y)
bezierCurveTo
in interface RenderingBackend
cp1x
- the cp1xcp1y
- the cp1ycp2x
- the cp2xcp2y
- the cp2yx
- the xy
- the ypublic void arc(double x, double y, double radius, double startAngle, double endAngle, boolean anticlockwise)
arc
in interface RenderingBackend
x
- the xy
- the yradius
- the radiusstartAngle
- the start angleendAngle
- the end angleanticlockwise
- is anti-clockwisepublic void clearRect(double x, double y, double w, double h)
clearRect
in interface RenderingBackend
x
- the xy
- the yw
- the widthh
- the heightpublic void drawImage(ImageData imageData, int sx, int sy, Integer sWidth, Integer sHeight, int dx, int dy, Integer dWidth, Integer dHeight) throws IOException
drawImage
in interface RenderingBackend
imageData
- the reader to read the image from 8the first one)sx
- the X coordinate of the top left corner of the sub-rectangle of the source image
to draw into the destination contextsy
- the Y coordinate of the top left corner of the sub-rectangle of the source image
to draw into the destination contextsWidth
- the width of the sub-rectangle of the source image to draw into the destination contextsHeight
- the height of the sub-rectangle of the source image to draw into the destination contextdx
- the X coordinate in the destination canvas at which to place the top-left corner of the source imagedy
- the Y coordinate in the destination canvas at which to place the top-left corner of the source imagedWidth
- the width to draw the image in the destination canvas. This allows scaling of the drawn imagedHeight
- the height to draw the image in the destination canvas. This allows scaling of the drawn imageIOException
- in case o problemspublic String encodeToString(String type) throws IOException
encodeToString
in interface RenderingBackend
type
- the name of the image formatIOException
- in case o problemspublic void fill()
fill
in interface RenderingBackend
public void fillRect(int x, int y, int w, int h)
fillRect
in interface RenderingBackend
x
- the xy
- the yw
- the widthh
- the heightpublic void fillText(String text, double x, double y)
fillText
in interface RenderingBackend
text
- the textx
- the xy
- the ypublic byte[] getBytes(int width, int height, int sx, int sy)
getBytes
in interface RenderingBackend
width
- the widthheight
- the heightsx
- start point xsy
- start point ypublic void lineTo(double x, double y)
lineTo
in interface RenderingBackend
x
- the xy
- the ypublic void moveTo(double x, double y)
moveTo
in interface RenderingBackend
x
- the xy
- the ypublic void putImageData(byte[] imageDataBytes, int imageDataHeight, int imageDataWidth, int dx, int dy, int dirtyX, int dirtyY, int dirtyWidth, int dirtyHeight)
putImageData
in interface RenderingBackend
imageDataBytes
- an array of pixel valuesimageDataHeight
- the height of the imageDataimageDataWidth
- the width of the imageDatadx
- horizontal position (x coordinate) at which to place the image data in the destination canvasdy
- vertical position (y coordinate) at which to place the image data in the destination canvasdirtyX
- horizontal position (x coordinate) of the top-left corner
from which the image data will be extracted. Defaults to 0.dirtyY
- vertical position (y coordinate) of the top-left corner
from which the image data will be extracted. Defaults to 0.dirtyWidth
- width of the rectangle to be painted.
Defaults to the width of the image data.dirtyHeight
- height of the rectangle to be painted.
Defaults to the height of the image data.public void quadraticCurveTo(double cpx, double cpy, double x, double y)
quadraticCurveTo
in interface RenderingBackend
cpx
- the cpxcpy
- the cpyx
- the xy
- the ypublic void rect(double x, double y, double w, double h)
rect
in interface RenderingBackend
x
- the xy
- the yw
- the widthh
- the heightpublic void setFillStyle(String fillStyle)
fillStyle
property.setFillStyle
in interface RenderingBackend
fillStyle
- the fillStyle
propertypublic void setStrokeStyle(String strokeStyle)
strokeStyle
property.setStrokeStyle
in interface RenderingBackend
strokeStyle
- the strokeStyle
propertypublic int getLineWidth()
lineWidth
property.getLineWidth
in interface RenderingBackend
lineWidth
propertypublic void restore()
restore
in interface RenderingBackend
public void rotate(double angle)
rotate
in interface RenderingBackend
angle
- the anglepublic void save()
save
in interface RenderingBackend
public void setLineWidth(int lineWidth)
lineWidth
property.setLineWidth
in interface RenderingBackend
lineWidth
- the lineWidth
propertypublic void setTransform(double m11, double m12, double m21, double m22, double dx, double dy)
setTransform
in interface RenderingBackend
m11
- Horizontal scaling. A value of 1 results in no scalingm12
- Vertical skewingm21
- Horizontal skewingm22
- Vertical scaling. A value of 1 results in no scalingdx
- Horizontal translation (moving)dy
- Vertical translation (moving).public void stroke()
stroke
in interface RenderingBackend
public void strokeRect(int x, int y, int w, int h)
strokeRect
in interface RenderingBackend
x
- the xy
- the yw
- the widthh
- the heightpublic void transform(double m11, double m12, double m21, double m22, double dx, double dy)
transform
in interface RenderingBackend
m11
- Horizontal scaling. A value of 1 results in no scalingm12
- Vertical skewingm21
- Horizontal skewingm22
- Vertical scaling. A value of 1 results in no scalingdx
- Horizontal translation (moving)dy
- Vertical translation (moving).public void translate(int x, int y)
translate
in interface RenderingBackend
x
- the xy
- the ypublic void clip(RenderingBackend.WindingRule windingRule, Path2D path)
clip
in interface RenderingBackend
windingRule
- the RenderingBackend.WindingRule RenderingBackend.WindingRule
to be usedpath
- the path or null if the current path should be usedpublic void closePath()
closePath
in interface RenderingBackend
Copyright © 2002–2024 Gargoyle Software Inc.. All rights reserved.